WO2014080906A1 - Inkjet head and line head - Google Patents

Inkjet head and line head Download PDF

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Publication number
WO2014080906A1
WO2014080906A1 PCT/JP2013/081165 JP2013081165W WO2014080906A1 WO 2014080906 A1 WO2014080906 A1 WO 2014080906A1 JP 2013081165 W JP2013081165 W JP 2013081165W WO 2014080906 A1 WO2014080906 A1 WO 2014080906A1
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WO
WIPO (PCT)
Prior art keywords
head
inkjet head
inkjet
ink
ink jet
Prior art date
Application number
PCT/JP2013/081165
Other languages
French (fr)
Japanese (ja)
Inventor
坂井　繁一
裕一 町田
康二郎 吉田
Original Assignee
コニカミノルタ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Priority to JP2014548582A priority Critical patent/JPWO2014080906A1/en
Publication of WO2014080906A1 publication Critical patent/WO2014080906A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/34—Bodily-changeable print heads or carriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • B41J2002/14241—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm having a cover around the piezoelectric thin film element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14491—Electrical connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/18—Electrical connection established using vias
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/19—Assembling head units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules

Definitions

  • the present invention relates to an inkjet head and a line head.
  • an ink jet recording apparatus that includes an ink jet head that ejects ink droplets from a plurality of fine nozzles arranged in a predetermined pattern, and controls the operation of the ink jet head to form an image on a recording medium.
  • Patent Document 1 discloses a technique using an attachment substrate for attaching each head chip to a desired position.
  • Patent Document 2 discloses a technique of providing an adjustment mechanism for adjusting the mounting position of each head chip attached to a support substrate with respect to the support substrate using screws.
  • the length in the width direction substantially orthogonal to the conveyance direction of the recording medium affects the overall size of the printer. Therefore, in order to reduce the size of the entire inkjet recording apparatus, It is desirable to reduce the length.
  • an ink jet head used for a line head is provided with a wing (projection) and a flange for fixing to a head mounting fixing member such as a carriage. These wings and flanges are provided on the side surface of the ink jet head, and Patent Document 4 discloses a technique using a shape for preventing collision damage. Patent Document 5 discloses a technique for finely adjusting the position of the ink jet head by changing the mounting angle of the portion of the ink jet head attached to the support member in a spherical shape.
  • JP 2000-351211 A JP 2007-90695 A JP 2007-90693 A JP 2010-264747 A JP 2010-76360 A
  • An object of the present invention is to provide a small inkjet head capable of highly precise nozzle arrangement.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inkjet head and a line head capable of efficiently arranging a plurality of inkjet heads to save space.
  • An object of the present invention is to provide a line head capable of arranging a plurality of inkjet heads while maintaining a highly accurate nozzle arrangement while suppressing generation of extra space.
  • the invention described in claim 1 In an inkjet head in which a plurality of inkjet head elements in which a plurality of ink nozzles that eject ink are arranged are arranged, The plurality of inkjet head elements are each held by fitting with a head holding member, Each of the head holding members is provided with a deformable portion that can be deformed to adjust the positions and / or postures of the plurality of inkjet head elements.
  • the invention according to claim 2 is the ink jet head according to claim 1, An adjustment mechanism that determines the amount of adjustment related to a change in the position and / or orientation of the inkjet head element is provided.
  • the adjustment mechanism is provided on the head adjustment member.
  • the head holding member is provided with a plurality of notches for introducing the plurality of inkjet head elements to positions where they are respectively fitted.
  • the head adjustment member is fixed to the head holding member so as to close an open end of the cutout portion into which the inkjet head element is fitted.
  • the invention according to claim 5 is the inkjet head according to any one of claims 2 to 4,
  • the adjustment mechanism includes a plurality of pushing portions that push the ink-jet head element into the deformation portion according to the amount of adjustment.
  • the invention according to claim 6 is the ink jet head according to claim 5,
  • the head holding member is characterized in that a gap having a predetermined width is provided on the opposite side of the deformable portion from the contact surface with the inkjet head element.
  • the invention according to claim 7 is the inkjet head according to any one of claims 2 to 6,
  • the plurality of inkjet head elements are arranged in two head rows,
  • the adjustment mechanism is provided for each of the plurality of ink jet head elements at a position other than between the ink jet head element and another adjacent ink jet head element.
  • the invention according to claim 8 is the ink jet head according to claim 7, Two rows of the head rows are provided in parallel,
  • the adjusting mechanism is configured such that, for each of the plurality of inkjet head elements, the inkjet head element of one of the head rows and the inkjet head element of the other head row are orthogonal to the head row. It is characterized by being provided on the opposite side of the opposite side.
  • the invention according to claim 9 is the inkjet head according to any one of claims 1 to 8,
  • the inkjet head element is An ink reservoir for storing ink for discharging ink from the plurality of ink nozzles;
  • the ink reservoir is provided with a groove, The groove is fitted with the head holding member.
  • the invention according to claim 10 is the ink jet head according to claim 9, A common flow path member for supplying ink to each of the ink reservoirs; Each ink reservoir is provided with an ink flow path communicating with the outside.
  • the common flow path member is provided so as to cover the ink flow path, and supplies the ink to the ink reservoir via the ink flow path.
  • the invention according to claim 11 is the ink jet head according to claim 10,
  • the common flow path member is divided into a plurality of blocks respectively corresponding to the plurality of ink reservoirs, and the plurality of blocks communicate with other adjacent blocks through openings provided on the respective wall surfaces. It is a feature.
  • the invention according to claim 12 is the ink jet head according to claim 10 or 11,
  • the ink flow path provided in the ink reservoir has a shape protruding outward from the ink reservoir, A gap between the protrusion-shaped part and the common flow path member is filled with an elastic member.
  • the invention according to claim 13 is In an inkjet head comprising a nozzle substrate in which a plurality of nozzle holes for discharging droplets are formed,
  • the nozzle substrate is attached and fixed to one end portion, and includes a housing in which components constituting the inkjet head are arranged on the inside.
  • the other end side of the housing opposite to the one end side to which the nozzle substrate is mounted and fixed has a cross-sectional dimension that is substantially perpendicular to one direction from the one end side to the other end side. Formed smaller than the dimension of the cross section substantially perpendicular to the one direction on the side,
  • a support attachment portion that is attached to a support that supports the inkjet head is provided on the outer surface of the other end portion.
  • the invention according to claim 14 is the inkjet head according to claim 13,
  • the housing is A large-sized portion provided on the one end side and having a cross-sectional dimension substantially equal to the one direction and substantially equal along the one direction; Provided on the other end side, the cross-sectional dimension approximately perpendicular to the one direction is smaller than the large dimension part, and the cross-sectional dimension approximately orthogonal to the one direction is substantially equal along the one direction.
  • a dimension part, and The support attachment part is provided on the outer surface of the small dimension part.
  • the invention according to claim 15 is the ink jet head according to claim 13 or 14,
  • the support attachment portion has a protrusion protruding from the outer surface on the other end side,
  • the inkjet head is positioned in a predetermined direction by engaging the protrusion with a groove provided on the support.
  • the invention according to claim 16 is the ink jet head according to claim 15,
  • the support is provided with a plurality of the groove portions corresponding to the protrusions of the plurality of inkjet heads arranged along a predetermined direction,
  • the plurality of protrusions are engaged with the plurality of grooves to position the plurality of inkjet heads in the arrangement direction.
  • the invention according to claim 17 is the ink jet head according to claim 13 or 14, It is characterized by further comprising a first positioning mechanism portion for positioning the inkjet head in a predetermined direction by attaching the support attachment portion to the support.
  • the invention according to claim 18 is the ink jet head according to claim 13 or 14,
  • the support body is attached with the support body mounting portion of each of a plurality of inkjet heads arranged along a predetermined direction.
  • a second positioning mechanism unit that positions the plurality of inkjet heads in a predetermined direction is further provided on a surface of the housing facing the inkjet head adjacent to the inkjet head.
  • the invention according to claim 19 is the inkjet head according to claim 18,
  • the second positioning mechanism portion has a convex portion and a concave portion that engage with each other, Of the plurality of inkjet heads, the convex portion is provided on a surface of the casing of one inkjet head facing the other inkjet head, and the surface of the casing of the other inkjet head facing the inkjet head of one of the casings. It is characterized in that the recess is provided.
  • the invention according to claim 20 is the ink jet head according to any one of claims 13 to 19, A plurality of the nozzle substrates are arranged in a staggered manner.
  • a plurality of ink jet heads according to any one of claims 13 to 20 are provided on the support along a predetermined direction.
  • the invention according to claim 22 is the line head according to claim 21,
  • the support has a frame part to which the support attachment part of each of a plurality of inkjet heads arranged along a predetermined direction is attached.
  • the invention according to claim 23 provides In a line head in which a plurality of inkjet heads in which a plurality of ink nozzle openings are arranged on one surface are arranged and supported by a support member, Either one of the surface different from the one surface of the inkjet head or the one surface of the support member is provided with an attachment protrusion, and the other is provided with an attachment receiving portion for receiving the attachment protrusion.
  • the mounting head and the mounting receiving portion are arranged to face each other, and the inkjet head is fixed to the support member.
  • the invention according to claim 24 is the line head according to claim 23,
  • the surface different from the one surface of the ink jet head is a surface opposite to the one surface.
  • the invention according to claim 25 is the line head according to claim 23 or 24, At least one of the attachment protrusion and the attachment receiving portion is inclined to incline in the width direction perpendicular to the conveyance direction of the recording medium on which an image is formed by discharging ink from the plurality of ink nozzle openings. It is characterized by having a surface.
  • the invention according to claim 26 is the line head according to claim 25,
  • the mounting protrusion and the mounting receiving portion are provided with the inclined surfaces facing each other.
  • the invention according to claim 27 is the line head according to claim 25 or 26,
  • the mounting protrusion has a shape in which a width in the width direction becomes narrower toward a tip direction thereof.
  • the invention according to claim 28 is the line head according to claim 25,
  • the distance between the support member and the inkjet head is changed in a state where at least one inclined surface provided on one of the support member or the inkjet head is in contact with the other attachment projection or the attachment receiving portion. It is characterized by having a distance adjusting mechanism.
  • the invention according to claim 29 is the line head according to claim 23 or 24,
  • a position adjustment unit for adjusting a relative position of the inkjet head with respect to the support member is provided on a surface of the support member opposite to the surface facing the inkjet head.
  • the invention according to claim 30 is the line head according to claim 29,
  • the position adjusting unit has a tapered shape in which a width in a width direction perpendicular to the conveyance direction of the recording medium is narrowed toward a leading end direction, and the tapered portion is provided with the mounting protrusion or the mounting protrusion provided on the inkjet head. It is a head of a tapered pin provided in contact with the attachment receiving portion so that the position thereof can be adjusted in the vertical direction with respect to the support member.
  • the invention according to claim 31 is the line head according to any one of claims 23 to 30,
  • the inkjet head includes a plurality of head chips each having a plurality of ink nozzle openings arranged in a predetermined pattern.
  • the invention according to claim 32 is the line head according to any one of claims 23 to 31, Between the adjacent inkjet heads, A spacer portion using an elastic member is provided.
  • the present invention there is an effect that a small and highly accurate nozzle arrangement is possible in the ink jet head. Further, according to the present invention, a plurality of inkjet heads can be efficiently arranged to save space. Further, according to the present invention, there is an effect that a plurality of inkjet heads can be arranged while maintaining a highly accurate inkjet head arrangement without requiring extra space in the line head.
  • FIG. 7A and 7B It is a perspective view which shows schematic structure of the inkjet head of FIG. 7A and 7B is equipped. It is a perspective view which shows schematic structure of the inkjet head of FIG. 7A and 7B is equipped. It is a perspective view which shows schematic structure of the inkjet head of FIG. 7A and 7B is equipped. It is a perspective view which shows schematic structure of the inkjet head of FIG. 7A and 7B is equipped. It is a perspective view which shows schematic structure of the inkjet head of FIG. It is a perspective view which shows schematic structure of the inkjet head of FIG. It is a figure which shows typically the surface along the VV line
  • FIG. 8 It is a fragmentary sectional view which shows schematic structure of the head chip with which the inkjet head of FIG. 8 is equipped. It is a perspective view which shows schematic structure of the modification of an inkjet head. It is a perspective view which shows schematic structure of the modification of an inkjet head. It is a figure which shows the whole line head of 3rd Embodiment. It is a figure which expands and shows a part of line head of 3rd Embodiment. It is a figure which expands and shows a part of line head of 3rd Embodiment. It is a side view of a part of a line head. It is a top view of a part of a line head. It is a figure explaining the fixed part of an inkjet head.
  • FIG. 1 is a diagram showing an overall structure of an inkjet head 110 according to the first embodiment of the present invention.
  • FIG. 2 is an exploded view showing each configuration of the inkjet head 110.
  • the inkjet head 110 includes six inkjet head elements 111, a reference plate 120 (head holding member) that supports these inkjet head elements 111, and each inkjet head with respect to the reference plate 120.
  • a pressing plate 150 head adjusting member
  • a common ink buffer 113 common flow path member
  • the ink jet head 110 of this embodiment two head rows are formed in three in the direction (width direction) perpendicular to the conveyance direction of the recording medium, and the ink jet head elements 111 are arranged in a staggered pattern as a whole. ing.
  • the inkjet head element 111 includes a conventionally used stacked head chip 111a and an ink reservoir 111b that temporarily stores the ink supplied from the common ink buffer 113 and sends the ink to the head chip 111a.
  • the ink reservoir 111b is bonded to the surface of the head chip 111a opposite to the surface where the nozzle openings are provided.
  • a recess serving as an ink flow path is provided, and the head chip 111a is ejected from a plurality of nozzles of the head chip 111a through ink supply holes provided on the joint surface.
  • the ink flow path communicates with each of the ink flow paths.
  • two cylindrical ink flow paths 112a and 112b are provided on the side opposite to the joint surface with the head chip 111a, and the ink supplied from the common ink buffer 113 is provided.
  • the ink jet head element 111 when the ink jet head element 111 is tested, one of the ink flow paths 112a and 112b can be used for inflow and the other can be used for discharge.
  • the ink reservoir 111b according to the ink jet head 110 of the present embodiment is provided with a groove portion 112c that goes around the side surface.
  • the width of the groove 112c corresponds to the thickness of the reference plate 120, and the groove 112c and the notch 121 of the reference plate 120 are fitted as will be described in detail later.
  • the head chip 111a has a plurality of nozzle openings (ink nozzles) arranged on one surface, and ink is ejected from these nozzle openings to form an image on a recording medium.
  • the arrangement pattern, the number, the interval, and the like of the nozzle openings are appropriately determined.
  • the nozzle opening has a staggered pattern, and the direction (width) perpendicular to the conveyance direction of the recording medium on which an image is formed using the inkjet head 110 (Direction) with a predetermined resolution (interval) so that no gap is formed.
  • each layer forming a pressure chamber that applies pressure to the ink to eject ink from each nozzle is laminated on the nozzle substrate in which the nozzle openings are arranged.
  • an intermediate substrate, a pressure chamber layer provided with a space forming a pressure chamber, and a diaphragm for applying pressure into the pressure chamber at the same time as a pressure chamber layer are laminated in order.
  • the formed pressure chamber further includes a piezoelectric element that deforms when a voltage is applied to vibrate the diaphragm, a first adhesive layer (partition wall layer), a wiring layer that supplies voltage to the piezoelectric element, and an insulation A layer (protective layer) is laminated.
  • a piezoelectric element that deforms when a voltage is applied to vibrate the diaphragm
  • a first adhesive layer partition wall layer
  • a wiring layer that supplies voltage to the piezoelectric element
  • an insulation A layer protection layer
  • Each layer from the insulating layer to the pressure chamber layer is provided with an ink flow path hole for supplying ink, that is, an inlet and a through hole communicating with each other, and each ink from the ink supply hole communicating with the ink reservoir 111b.
  • the ink that has flowed into the pressure chamber through the flow path hole is pressurized in accordance with the vibration of the diaphragm and is discharged from each nozzle opening.
  • the reference plate 120 is provided with six notches 121 alternately on both sides with respect to an axis extending in the width direction. Among the three sides forming these cutouts 121, adjacent two sides are provided with gaps 122a and 122b (gap) in parallel. In addition, slits 123 are provided at four locations between adjacent notches 121.
  • the inkjet head element 111 is inserted into each of the cutout portions 121.
  • the notch 121 is fitted into a groove provided on the side surface of the ink reservoir 111b.
  • the bridge portions 124 a and 124 b (deformed portions) remaining between the gap portions 122 a and 122 b and the notch portion 121 are elastically deformed when pressed from the notch portion 121 side.
  • the widths of the bridge portions 124a and 124b are formed so as to be appropriately deformable based on the material used for the reference plate 120 and the force applied by adjusting the position of the inkjet head element 111 described later.
  • protrusions 125 a and 125 b are provided in the center of the bridge portions 124 a and 124 b toward the inside of the notch 121, and the distance between the protrusion 125 a and the opposite side of the notch 121. Is set to be equal to or smaller than the width of the groove 112c of the inkjet head element 111.
  • the slit 123 is for passing a wiring member (not shown) for sending a drive signal related to the ink ejection operation of the inkjet head element 111.
  • the pressing plate 150 is provided so as to overlap each row of the reference plate 120, and is for adjusting and fixing the inkjet head element 111 at an appropriate position.
  • the holding plate 150 is made of, for example, various metal members, and is fixed to the reference plate 120 using, for example, screws.
  • the presser plate 150 is provided with a rectangular opening 151 at a position corresponding to the inkjet head element 111 and the slit 123.
  • three screw holes 152 are provided at positions where the opening 151 closes the open end portion of the notch 121 in the reference plate 120.
  • the position of the screw hole 152 corresponds to the position of the groove 112c of the inkjet head element 111, that is, is substantially in the same plane as the reference plate 120.
  • the inkjet head element 111 is attached to the reference plate by the amount of rotation of three screws 153 (see FIG. 5A to FIG. 5C, which are pushed in) that pass through these screw holes 152 and come into contact with the inkjet head element 111. It is pushed in (i.e. translated) or rotated in the plane.
  • the screw hole 152 and the screw 153 constitute an adjustment mechanism.
  • the common ink buffer 113 forms an ink chamber for supplying ink to the ink reservoirs 111b of all the inkjet head elements 111 fixed to the reference plate 120.
  • the common ink buffer 113 has six machine chambers (blocks) corresponding to each ink reservoir 111b, and each machine chamber has various types such that the open ends of the ink flow paths 112a and 112b of the ink reservoir 111b are accommodated therein. Bonded using an adhesive.
  • FIG. 3A and 3B are diagrams for explaining the bonding of the common ink buffer 113 to the inkjet head 110.
  • FIG. FIG. 3A shows a joint surface of the common ink buffer 113 with the inkjet head element 111.
  • the common ink buffer 113 is provided with openings 116a and 116b for inserting the ink flow paths 112a and 112b into the interiors of the respective machines.
  • FIG. 3B is a perspective view of a cross section obtained by cutting the machine chamber and the ink reservoir 111b within a plane including the axis of the cylindrical ink flow path 112a.
  • each machine chamber of the common ink buffer 113 is connected without opening a gap corresponding to this position adjustment, and ink supply is performed. It needs to be possible. Therefore, in the inkjet head 110, the size of the openings 116a and 116b is made larger than the size of the ink flow paths 112a and 112b, and the elastic member 115 is embedded in the entire gap surrounding the ink flow paths 112a and 112b.
  • the elastic member 115 By setting the elastic member 115 to an appropriate thickness with respect to the movable width by adjusting the position of the inkjet head element 111 based on the elastic modulus, the inkjet head element 111 moves relative to the common ink buffer 113. Even so, there is no gap between them.
  • the elastic member 115 various known materials having resistance to ink, for example, silicon rubber and fluorine rubber can be used.
  • supply pipes 114a and 114b penetrating between the outside and the ink flowing in and out. Ink flowing from the supply pipe 114a from the outside via the supply connector (not shown) from the outside of the ink jet head 110 flows in each machine chamber in order and supplies the ink to all the ink reservoirs 111b.
  • 4A and 4B are views for explaining an assembly procedure of the inkjet head 110 according to the present embodiment.
  • the reference plate 120 is introduced and fitted into the reference plate 120 while fitting the reference plate 120 and the groove on the side surface of the ink reservoir 111b from the open end side of the notch 121 (step 1).
  • the inkjet head element 111 is passed through the opening 151 of the pressing plate 150, and the pressing plate 150 is placed on one surface of the reference plate 120 (here, the surface opposite to the side where the head chip 111a is present).
  • the common ink buffer 113 is joined to each ink reservoir 111b (step 3).
  • screws 153 see FIG.
  • the ink jet head element 111 and the wiring member can be connected in the middle of the above process, but can be connected in advance before the process 1. In this case, when the pressing plate 150 is provided, the wiring member is pulled out from the opening 151 together with the inkjet head element 111.
  • FIGS. 5A to 5C are views for explaining the position adjustment of the inkjet head element 111 using the screws 153.
  • the inkjet head element 111 is positioned between the tip of the screw 153 and the protrusion 125b. Fixed to.
  • FIG. 5B when the three screws 153 are further screwed evenly, the bridge portion 124b is bent (deformed) according to the screwed amount (adjustment amount), and the inkjet head element. 111 moves parallel to the axis of the reference plate 120.
  • the rotation amount of the central screw 153 is the same as the screws 153 at both ends.
  • the amount of rotation may be different.
  • both ends of the ink jet head element 111 are pushed unevenly.
  • the ink jet head element 111 has the protrusions 125a, 125b and other parts.
  • the ink jet head element 111 rotates with a contact point between the cutout 121 and the contact point.
  • a plurality of inkjet head elements 111 in which a plurality of nozzle openings are arranged are arranged, and the inkjet head element 111 is fitted to the reference plate 120 to be inkjet.
  • the bridge portions 124a and 124b can be deformed to determine the position. That is, since the relative position can be precisely adjusted after the ink jet head element 111 is fitted to the reference plate 120, the ink jet head elements 111 can be arranged with high accuracy.
  • the position and posture of the inkjet head element 111 are adjusted from the side surface by the screw 153 passing through the screw hole 152 from the side surface of the inkjet head element 111, the position and posture of the inkjet head element 111 are directly, easily and reliably. Can be adjusted.
  • the screw hole 152 and the screw 153 are provided on the holding plate 150 fixed on the reference plate 120, the screw hole 152 and the screw 153 are placed at appropriate positions by combining the reference plate 120 and the holding plate 150.
  • the position and posture of the ink jet head element 111 can be easily adjusted by arranging them.
  • the reference plate 120 is provided with a notch 121 for fitting the ink jet head element 111, and the ink jet head element 111 can be introduced to the fitting position in the plane of the reference plate 120.
  • the inkjet head element 111 can be easily and reliably assembled.
  • the press plate 150 is laminated on the reference plate 120 so that the ink jet head element 111 is passed through the opening 151 after the ink jet head element 111 is fitted to the reference plate 120, the reference plate can be easily and surely provided.
  • the ink jet head element 111 can be pressed by sealing the open end portion of the 120 notch 121.
  • the bridge portions 124a and 124b provided on the opposite side of the screw 153 are pushed into the ink jet head element 111 and deformed, so that the position adjustment is performed with an easy configuration. I can do it.
  • the gap portions 122a and 122b are provided in parallel to the bridge portions 124a and 124b that are deformed when the position and posture of the inkjet head element 111 are adjusted, the deformation of the bridge portions 124a and 124b is caused by the deformation of the reference plate 120. The influence on other parts can be further suppressed.
  • the inkjet head elements 111 by arranging the inkjet head elements 111 in two rows, it is possible to easily arrange the ink nozzles in the width direction without gaps. Further, in this case, since the screw 153 can be screwed from the screw hole 152 provided at a position other than between the adjacent ink jet head elements 111, the screw 153 can be easily rotated, and the ink jet head element 111. Can be easily adjusted.
  • the head rows in two parallel rows, and in particular, arranging them in a staggered pattern, it is possible to achieve both the nozzle arrangement without gaps and the arrangement of the screw holes 152 for easy position adjustment of the inkjet head element 111. Therefore, it is possible to easily achieve both high resolution and high accuracy nozzle arrangement.
  • a groove portion 112c is provided in a relatively large size (thickness) among the components of the inkjet head element 111, such as the ink reservoir 111b included in the inkjet head element 111, and the reference plate 120 and By fitting, the position and posture of the inkjet head element 111 can be adjusted more easily and reliably.
  • each ink jet head element 111 can be adjusted after the ink jet head element 111 is joined to the common ink buffer 113, an extra space is required for the ink flow path structure. And not.
  • the ink reservoir 111b is provided with protruding ink flow paths 112a and 112b, and these ink reservoirs 111b are shared by the elastic member 115 surrounding them. Even if the position and orientation of the ink buffer 113 are changed, ink can be easily and reliably supplied to each nozzle without causing ink leakage or cutting.
  • the present invention is not limited to the first embodiment, and various modifications can be made.
  • the case where the inkjet head element 111 fitted to the reference plate 120 is fixed by adjusting the position and posture with the screw 153 inserted into the screw hole 152 of the holding plate 150 has been described.
  • the reference plate 120 may have both a configuration related to fitting and a mechanism related to position and orientation adjustment.
  • the reference plate 120 and the inkjet head element 111 are fitted on the three sides excluding the open end side of the notch 121.
  • the present invention is not limited to this as long as the movement in the vertical direction relative to the reference plate 120 can be suppressed.
  • by suppressing the movement in the vertical direction together with the pressing plate 150 it is possible to make the fitting place one place.
  • the position and posture of the inkjet head element 111 can be adjusted by bending and deforming the bridge portions 124a and 124b with the gap portions 122a and 122b.
  • the position and posture of the inkjet head element 111 can be adjusted.
  • the deformation part for adjustment is not limited to this.
  • the reference plate 120 may have a structure in which a member that is elastically or plastically deformed is used for the contact surface with the inkjet head element 111.
  • the inkjet head element 111 can be more easily rotationally adjusted by providing separate protrusions not only on the protrusions 125a and 125b but also on other fitting portions where the bridge portions 124a and 124b are not provided. I can do it.
  • the groove is provided on the side surface of the ink reservoir 111b in the inkjet head element 111, but it may be provided on another member. For example, it may be provided on a heater member or a substrate.
  • channel in this case may be formed by providing a parallel 2 row
  • a form in which one convex portion provided in the inkjet head element 111 is fitted to a concave portion provided in the reference plate 120 may be employed.
  • the inkjet head in which the reference plate 120 is disposed in parallel with the nozzle opening surface of the head chip 111a has been described as an example.
  • the present invention is not limited to this.
  • the inkjet head element 111 an inkjet head chip according to another configuration may be used.
  • the ink ejection direction is also the surface of the reference plate 120. It is not limited to when it is perpendicular to.
  • the inkjet head element 111 is not limited to a system that pressurizes and discharges ink using a piezoelectric element, but may be a system that pressurizes by heating.
  • the plate-like pressing plate 150 provided with the opening 151 is provided on the reference plate 120 in an overlapping manner, but the shape of the pressing plate 150 is not limited to this. As long as it has an adjustment mechanism for the inkjet head element 111 related to the screw hole 152 and is fixed to the reference plate 120, it may have a prismatic shape instead of a plate shape. In this case, the opening 151 Needless to say, a shape that does not surround the inkjet head element 111 can be obtained. Further, the pressing plate 150 is not limited to being stacked on the reference plate 120, but may be a shape attached from the side or a shape sandwiching the reference plate 120 from above and below.
  • each of the screws 153 that are inserted into the screw holes 152 and adjust the position and orientation of the inkjet head element 111 may be provided with a common buffer member or the like at the tip.
  • the present invention is not limited to this.
  • the present invention can also be applied to a case where a plurality of inkjet head elements 111 are simply arranged in a line.
  • the screw 153 is arranged in the direction from the outside to the center line (in the present embodiment, the recording medium conveyance direction) perpendicular to the arrangement direction of the head rows arranged in parallel. It is not restricted to this arrangement.
  • the screw 153 may be arranged in the width direction, or an adjustment mechanism related to the arrangement in both directions may be used in combination.
  • a screw is provided from the side where the adjacent inkjet head element 111 is provided. Since it is difficult to adjust the rotation amount of 153, the adjustment mechanism can be configured not to be provided between the adjacent inkjet head elements 111.
  • the common ink buffer 113 is fixed, and the elastic member 115 compensates for the deviation from each machine room due to the adjustment of the position and posture of each inkjet head element 111.
  • the present invention is not limited to this.
  • a portion of the common ink buffer 113 that communicates with each machine chamber may be formed thin, and the portion may be bent or extended as the inkjet head elements 111 are finely moved or rotated.
  • the ink flow paths 112a and 112b are formed in a cylindrical shape, but may be a protrusion having another shape such as a square shape, or may be a simple hole that is not a protrusion.
  • the common ink buffer 113 has a shape corresponding to each inkjet head element 111.
  • the present invention is not limited to this.
  • One large ink buffer that can respectively correspond to the position change of the ink flow paths 112a and 112b of each inkjet head element 111 may be provided.
  • the common ink buffer 113 may not be used, and individual ink buffers may be connected by piping such as a tube.
  • FIG. 6 is a perspective view showing a schematic configuration of an inkjet recording apparatus 200 according to the second embodiment to which the present invention is applied.
  • the ink jet recording apparatus 200 includes a platen 201 that supports the recording medium M, a conveyance roller 202 that is provided before and after the platen 201, and conveys the recording medium M, and above the platen 201.
  • a predetermined number (for example, four) of line heads 203, 204, 205, and 206 are provided.
  • the conveyance direction of the recording medium M is the front-rear direction (or Y direction)
  • one direction orthogonal to the front-rear direction is the left-right direction (or X direction)
  • the direction is the vertical direction.
  • Each of the line heads 203, 204, 205, and 206 has a long shape extending in the left-right direction. Further, the line heads 203, 204, 205, 206 are arranged at a predetermined interval from the upstream side to the downstream side in the transport direction.
  • the ink jet recording apparatus 200 transports the recording medium M supported by the platen 201 in the transport direction by driving the transport roller 202. At this time, the line heads 203, 204, 205, and 206 transfer Y, M, and C. , K process color inks are ejected toward the recording medium M.
  • Each of the line heads 203, 204, 205, and 206 has substantially the same configuration except that the color of the ejected ink is different, and the line head 203 will be described in detail as a representative.
  • FIG. 7A is a perspective view showing a schematic configuration of the line head 203
  • FIG. 7B is an enlarged perspective view showing a portion surrounded by a broken line B in FIG. 7A.
  • FIG. 8 is a diagram showing the line head 203 as viewed from below in order to schematically explain the arrangement state of the inkjet head 210.
  • the line head 203 includes a predetermined number (for example, three) of inkjet heads 210 arranged in the left-right direction, and a frame portion (support) that supports these inkjet heads 210. Body) 220.
  • the frame portion 220 is a member that is long in the left-right direction, and is formed in a box shape that opens downward.
  • a predetermined number of grooves 223 that engage with protrusions a1 and b1 (described later) on the front side and the rear side of the housing 230 of the inkjet head 210 are provided at predetermined positions on the front part 221 and the rear part 222 of the frame part 220. (For example, six on each surface portion) (see FIG. 7A and the like).
  • a plurality of the groove portions 223 are formed at a predetermined interval corresponding to the interval between the projections a1 on the front surface side and the projections b1 on the rear surface side.
  • Each groove portion 223 is cut out from the lower end of each of the front surface portion 221 and the rear surface portion 222, and has a shape bent substantially at a right angle when viewed in the front-rear direction. Further, the innermost portion of each groove 223 is curved in a downwardly convex arc shape, and cylindrical projections a1 and b1 are placed on the arc-shaped portion. 7A and the like, only the groove portion 223 provided in the front surface portion 221 is illustrated.
  • the shape of the groove part 223 is an example, and is not limited thereto, and can be arbitrarily changed as appropriate. Furthermore, the shape of the innermost part of the groove part 223 can also be arbitrarily changed arbitrarily corresponding to the outer shape of the projection parts a1 and b1.
  • an opening 224a is formed on the upper surface 224 of the frame portion 220 so as to correspond to each ink jet head 210, and the supply connector 215, the discharge connector 216, and the electrical components that constitute the ink jet head 210 are formed in the opening 224a.
  • a connector 219 (described later) or the like is inserted.
  • FIG. 9A and 9B are perspective views showing a schematic configuration of the inkjet head 210.
  • FIG. 10 is a diagram schematically showing the surface along the line VV in FIG.
  • the inkjet head 210 is common to a holding plate 212 that holds a predetermined number (for example, six) of head chips 211 and to supply ink to each head chip 211.
  • the supply connector 215 and the discharge connector 216 communicated with the ink chamber 213 via the supply pipe 214, and the piezoelectric element 2114 b (described later) of the head chip 211.
  • a housing 230 disposed inside.
  • the supply connector 215, the IC substrate 217, and the electrical connector 219 are provided two by two so as to correspond to the three head chips 211, respectively arranged on the front side and the rear side of the holding plate 212, as will be described later. Is provided.
  • the holding plate 212 is attached and fixed to the lower end portion 230 a of the housing 230.
  • head chips 211 each including a predetermined number (for example, six) of nozzle substrates 2111 having substantially the same shape and size are arranged in a staggered manner in the left-right direction. That is, three head chips 211 are arranged on each of the front side and the rear side of the holding plate 212 at a predetermined equal interval, and the three front head chips 211, ... and the three rear head chips. 211,... Are shifted in the left-right direction by the width of one head chip 211 in the left-right direction.
  • the holding plate 212 is formed in a stepped shape corresponding to the arrangement of a predetermined number (for example, six) of head chips 211. Specifically, of the three head chips 211 on the right side of the rightmost head chip 211 among the three head chips 211 on the front side of the holding plate 212, that is, on the rear side of the three head chips 211 on the holding plate 212. The front portion of the right end head chip 211 is cut out at a substantially right angle in plan view. Similarly, the rear part of the leftmost head chip 211 among the three head chips 211 on the front side of the holding plate 212, that is, the leftmost side of the three head chips 211 on the rear side of the holding plate 212. A portion on the left side of the head chip 211 is cut out at a substantially right angle in plan view.
  • a predetermined number for example, six
  • the head chip 211 is a plate-like member provided with a plurality of nozzles 2111a,. Hereinafter, the head chip 211 will be described in detail.
  • FIG. 11 is a partial cross-sectional view illustrating a schematic configuration of the head chip 211, and illustrates only components related to one nozzle 2111a.
  • the head chip 211 is configured by laminating a nozzle substrate 2111, an intermediate substrate 2112, a pressure chamber substrate 2113, a first adhesive layer 2114, a wiring layer 2115, and a second adhesive layer 2116 in this order. ing.
  • the nozzle substrate 2111 is a silicon substrate and is located in the lowermost layer of the head chip 211.
  • a plurality of nozzles 2111 a,... are formed on the nozzle substrate 2111.
  • the nozzles 2111a are arranged on the nozzle surface so as to have a substantially matrix shape.
  • the intermediate substrate 2112 is a glass substrate, and is laminated and bonded to the upper surface of the nozzle substrate 2111. A through hole 2112 a that communicates with the nozzle 2111 a of the nozzle substrate 2111 is formed in the intermediate substrate 2112.
  • the pressure chamber substrate 2113 includes a pressure chamber layer 2113a and a diaphragm 2113b.
  • the pressure chamber layer 2113a is a silicon substrate, and is stacked on and bonded to the upper surface of the intermediate substrate 2112.
  • a pressure chamber 2113c that applies ejection pressure to the ink ejected from the nozzle 2111a is formed so as to penetrate the pressure chamber layer 2113a.
  • the pressure chamber 2113c is provided above the through hole 2112a and the nozzle 2111a, and communicates with the through hole 2112a and the nozzle 2111a.
  • a communication hole 2113d communicating with the pressure chamber 2113c is formed in the pressure chamber layer 2113a so as to extend in the horizontal direction while penetrating the pressure chamber layer 2113a.
  • the diaphragm 2113b is laminated on and bonded to the upper surface of the pressure chamber layer 2113a so as to cover the opening of the pressure chamber 2113c. That is, the diaphragm 2113b constitutes the upper wall portion of the pressure chamber 2113c.
  • An oxide film is formed on the surface of the diaphragm 2113b.
  • the diaphragm 2113b is formed with a through hole 2113e communicating with the communication hole 2113d.
  • the first adhesive layer 2114 is laminated on the upper surface of the diaphragm 2113b.
  • the first adhesive layer 2114 is a photosensitive resin layer that bonds the diaphragm 2113b and the wiring layer 2115, and is a partition layer that forms a space 2114a therein.
  • the space 2114a is formed above the pressure chamber 2113c so as to penetrate the first adhesive layer 2114, and accommodates the piezoelectric element 2114b therein.
  • the piezoelectric element 2114b is formed in substantially the same plan view shape as the pressure chamber 2113c, and is provided at a position facing the pressure chamber 2113c with the diaphragm 2113b interposed therebetween.
  • the piezoelectric element 2114b is an actuator made of PZT (lead zirconium titanate) for deforming the diaphragm 2113b. Further, an electrode (not shown) provided on the lower surface of the piezoelectric element 2114b is connected to the diaphragm 2113b. Further, the first adhesive layer 2114 is formed with a through hole 2114c communicating with the through hole 2113e of the diaphragm 2113b independently of the space 2114a.
  • PZT lead zirconium titanate
  • the wiring layer 2115 includes an interposer 2115a which is a silicon substrate.
  • the lower surface of the interposer 2115a is covered with two layers of silicon oxide insulating layers 2115b and 2115c, and the upper surface is similarly covered with an insulating layer 2115d of silicon oxide.
  • the lower insulating layer 2115c is stacked on and bonded to the upper surface of the first adhesive layer 2114.
  • a through-electrode 2115e is disposed so as to penetrate the interposer 2115a in the vertical direction.
  • One end of a conductive substrate 2115f extending in the horizontal direction is connected to the lower end of the through electrode 2115e.
  • a stud bump 2114d provided on an electrode (not shown) on the upper surface of the piezoelectric element 2114b is connected to the other end of the conductive substrate 2115f via solder 2115g exposed in the space 2114a.
  • the conductive substrate 2115f is sandwiched and protected by two insulating layers 2115b and 2115c below the interposer 2115a.
  • the interposer 2115a is formed with an inlet 2115h that communicates with the through hole 2114c of the first adhesive layer 2114 so as to penetrate the interposer 2115a in the vertical direction.
  • the second adhesive layer 2116 is laminated and bonded on the upper surface of the insulating layer 2115d of the interposer 2115a while covering the wiring 2116a disposed on the upper surface of the wiring layer 2115.
  • the second adhesive layer 2116 is a photosensitive resin layer that adheres the holding plate 212 and the head chip 211, and also serves as a protective layer that protects the wiring 2116a.
  • the wiring 2116a extends in the horizontal direction, and one end is connected to the upper end of the through electrode 2115e, and the other end is connected to the electrical connector 219 via the relay board 218a and the connector board 218b.
  • the second adhesive layer 2116 has a through hole 2116b that communicates with the inlet 2115h.
  • the communication hole 2113d, the through holes 2113e, 2114c, 2116b, and the inlet 2115h of the head chip 211 constitute a flow path that connects the ink chamber 213 and the pressure chamber 2113c, so that the ink in the ink chamber 213 passes through this flow path. Via the nozzle 2111a.
  • the casing 230 has a dimension on the lower end (one end) 230a side to which the holding plate 212 for holding the head chip 211 is attached and fixed to a dimension on the upper end (other end) 230b side.
  • the upper end portion 230b side of the housing 230 has a cross-sectional dimension that is substantially orthogonal to the vertical direction (one direction) from the lower end portion 230a side to the upper end portion 230b side. It is formed smaller than the dimension.
  • a large dimension portion 231 having a shape in which the cross-sectional dimension substantially perpendicular to the vertical direction is substantially equal along the vertical direction is provided on the lower end 230a side of the housing 230.
  • the dimension of the cross section substantially orthogonal to the vertical direction is smaller than that of the large dimension part 231 and the dimension of the cross section substantially orthogonal to the vertical direction is along the vertical direction so as to be continuous with the upper end 230b of the large dimension part 231.
  • the small dimension part 232 which makes a substantially equal shape is provided.
  • the large dimension portion 231 has an outer shape in which the planar view shape of the holding plate 212 is extended in the vertical direction. That is, the shape and size of the cross section substantially perpendicular to the vertical direction of the large dimension portion 231 are substantially equal to the shape and size of the cross section substantially perpendicular to the vertical direction of the outer surface of the holding plate 212. That is, a sufficient storage space for various head components arranged in the housing 230 is secured inside the large dimension portion 231.
  • the small dimension portion 232 is slightly shorter in the front-rear direction than the large dimension portion 231. That is, the front surface portion 232a and the rear surface portion 232b of the small size portion 232 and the front surface portion 231a and the rear surface portion 231b of the large size portion 231 are all flat surfaces substantially orthogonal to the front-rear direction.
  • the front surface portion 232a of the small size portion 232 is disposed on the rear side by a predetermined distance with respect to the front surface portion 231a of the large size portion 231, and similarly, the rear surface portion 232b of the small size portion 232 is the large size portion 231.
  • the rear surface portion 231b is disposed on the front side by a predetermined distance.
  • the length in the front-rear direction of the small dimension portion 232 that is, the length between the front surface portion 232a and the rear surface portion 232b is substantially equal to the length between the front and rear inner surfaces of the frame portion 220, or from this length Is slightly shorter.
  • the front surface portion 232a and the rear surface portion 232b of the small dimension portion 232 are provided with projection portions a1 and b1 that engage with the groove portion 223 of the frame portion 220 (see FIG. 9A and FIG. 10).
  • the protrusion a1 is formed so as to protrude a predetermined length from the outer surface of the left and right ends of the front surface portion 232a of the small dimension portion 232 to the front side.
  • the protrusion b1 is formed to protrude to the rear side by a predetermined length from the outer surfaces of the left and right ends of the rear surface portion 232b of the small dimension portion 232.
  • Each of the protrusions a1 and b1 is formed in, for example, a substantially cylindrical shape, but the shape is an example and the present invention is not limited to this.
  • the cross section orthogonal to the front-back direction of the protrusions a1 and b1 can be arbitrarily changed as appropriate, for example, by making the cross section rectangular.
  • the protruding lengths of the protrusions a1 and b1 can be arbitrarily changed as appropriate according to the thicknesses of the front surface part 221 and the rear surface part 222 of the frame part 220, and the like.
  • the protrusions a 1 and b 1 of the small dimension part 232 are inserted into the corresponding groove parts 223 of the frame part 220 and engaged with the innermost part of the groove part 223, so that the inkjet head 210 is attached to the frame part 220. It is attached. Thereby, the movement of the inkjet head 210 in the left-right direction with respect to the frame portion 220 is restricted, and the inkjet head 210 is positioned in the left-right direction with respect to the frame portion 220.
  • the protrusions a ⁇ b> 1 and b ⁇ b> 1 of the small size portion 232 constitute a support attachment portion that is attached to the frame portion (support) 220 that supports the inkjet head 210.
  • each of the protrusions a1, b1 of the plurality of inkjet heads 210 By engaging with the groove portions 223,..., The plurality of inkjet heads 210,. That is, the line head 203 is configured by arranging a plurality of (for example, three) inkjet heads 210 configured as described above along the left-right direction on the frame portion 220. Specifically, since the unevenness is formed by the holding plate 212 of each inkjet head 210 and both ends in the left-right direction of the housing 230, for example, among the three inkjet heads 210,. The three inkjet heads 210 are arranged in the frame portion 220 along the left-right direction so as to engage the unevenness of the left and right ends.
  • openings c1, c2, and c3 are formed on the upper surface portion 232c of the small size portion 232 so as to correspond to the supply connector 215, the discharge connector 216, and the electrical connector 219, and these openings c1, c2 are formed.
  • C3, a supply connector 215, a discharge connector 216, and an electrical connector 219 are inserted.
  • the upper end portion 230b opposite to the lower end portion 230a side to which the nozzle substrate 2111 of the housing 230 in which the head components are arranged is attached and fixed.
  • the frame portion is formed so that the dimension of the cross section substantially perpendicular to the vertical direction is smaller than the dimension of the cross section substantially perpendicular to the vertical direction on the lower end portion 230a, and the frame portion that supports the inkjet head 210 on the outer surface on the upper end portion 230b side.
  • the support attachment part attached to 220 Since the support attachment part attached to 220 is provided, the support attachment part on the outer surface on the upper end part 230b side whose dimension of the cross section substantially perpendicular to the vertical direction is smaller than the lower end part 230a of the housing 230, particularly the protrusion
  • the inkjet head 210 can be attached to the frame portion 220 using the portions a1 and b1. Specifically, a large-sized portion 231 having a cross-sectional dimension substantially orthogonal to the vertical direction is provided on the lower end portion 230a side of the housing 230 along the vertical direction, and the upper and lower portions 230b of the housing 230 are vertically disposed on the upper end portion 230b side.
  • the inkjet head 210 can be attached to the frame portion 220 by engaging the portions a 1 and b 1 with the corresponding groove portions 223 of the frame portion 220.
  • a plurality of inkjet heads 210 ... Constituting the line heads 203, 204, 205, 206 are arranged in the frame part 220 along a predetermined direction, the arrangement direction of these inkjet heads 210,.
  • the protrusions a1 and b1 engage with the groove portions 223 of the frame portion 220, so that the inkjet head 210 can be positioned in the left-right direction.
  • the projections a1 and b1 of the plurality of inkjet heads 210 disposed in the left-right direction are engaged with the plurality of grooves 223 provided in the frame portion 220, whereby the plurality of inkjets.
  • the heads 210,... Can be easily positioned in the arrangement direction.
  • the inkjet head 210 may be provided with a first positioning mechanism (not shown) that positions the inkjet head 210 in a predetermined direction. That is, for example, instead of the protrusions a1 and b1, etc., a screw hole is provided at a predetermined position of the small size portion 232 of the housing 230, and the male screw portion of the mounting screw screwed into the screw hole is used as the groove portion of the frame portion 220.
  • the inkjet head 210 can be positioned in the left-right direction with respect to the frame portion 220 by being screwed into the screw hole while being engaged with the H.223 and fixed. At this time, the inkjet head 210 may be positioned in the front-rear direction with respect to the frame portion 220 by adjusting the screwing amount of the mounting screw.
  • each inkjet head 210 can be easily positioned in a predetermined direction with respect to the frame portion 220.
  • a second positioning mechanism 240 for positioning the inkjet head 210a in a predetermined direction is provided on the surface of the casing 230 of the inkjet head 210a facing the adjacent inkjet head 210a. Also good. In other words, the second positioning mechanism 240 is provided on the left and right side surfaces 233 and 234 facing the adjacent inkjet head 210a in the housing 230 of each inkjet head 210a. Specifically, the second positioning mechanism portion 240 has a convex portion 241 and a concave portion 242 that engage with each other, and among the plurality of ink jet heads 210a,..., The other ink jet in the housing 230 of one ink jet head 210a. A convex portion 241 is provided on the surface facing the head 210a, and a concave portion 242 is provided on the surface facing the one inkjet head 210a in the housing 230 of the other inkjet head 210a.
  • the convex portion 241 is formed to protrude from the left side surface portion 234 of the housing 230 to the left by a predetermined length, for example. Further, the protruding portion 241 has a small protruding amount on both end sides with respect to the center side in the front-rear direction.
  • the concave portion 242 is formed corresponding to the shape of the convex portion 241 so as to be engageable with the convex portion 241. That is, by projecting a predetermined length from the right side surface portion 233 of the housing 230 to the right side so that the protruding amount of the both ends in the front-rear direction of the concave portion 242 is larger than the central portion side, the concave portion 242 having a predetermined depth. Is configured.
  • the convex portion 241 and the concave portion 242 may have any shape as long as they are engaged with each other. For example, the outer shape may be formed in an arc shape or a trapezoidal shape. .
  • the three inkjet heads 210a are arranged on the frame portion 220 along the left-right direction so that the concavities and convexities at the left and right ends of the adjacent inkjet heads 210a are engaged.
  • the convex portion 241 of the casing 230 of one inkjet head 210a and the concave portion 242 of the casing 230 of the other inkjet head 210a are engaged with each other. Thereby, it can be set as the state by which the adjacent inkjet heads 210a were positioned in the arrangement direction.
  • the movement of the adjacent inkjet heads 210a in the front-rear direction is restricted, and the inkjet heads 210a are positioned in the front-rear direction.
  • the plurality of inkjet heads 210a are arranged densely while suppressing the increase in the arrangement direction and the width in the front-rear direction of the plurality of inkjet heads 210a,... Constituting the line heads 203, 204, 205, 206.
  • each inkjet head 210a can be easily positioned in a predetermined direction.
  • the frame portion 220 is exemplified as the support body.
  • the frame portion 220 is only an example and is not limited thereto, and can be arbitrarily changed as long as the structure supports the inkjet heads 210 and 210a.
  • FIG. 13 is a perspective view showing a line head 303 according to the third embodiment of the present invention.
  • 14A and 14B are perspective views showing a part of the line head 303 in an enlarged manner.
  • the line head 303 has a plurality of inkjet heads 310 fixed (supported) to a frame part 320 (supporting member).
  • the ink jet head 310 is arranged in a direction (hereinafter referred to as a width direction) orthogonal to the transport direction of the recording medium M so as to face the recording medium M (recording paper), and is provided over the entire width of the recording medium M. It has been.
  • the line head 303 is provided in a fixed manner, and allows one pass to form an image on the entire surface of the recording medium M by ejecting ink from each nozzle at an appropriate timing while conveying the recording medium M. This is a (single pass) drawing head.
  • the number of inkjet heads 310 fixed to the frame part 320 is three here as an example, it is determined according to the width of the recording medium M and the length of each inkjet head 310. A slight gap is provided between adjacent inkjet heads 310, and an elastic member 340 (spacer portion) is provided in this gap.
  • the frame part 320 is a frame-shaped support member.
  • the frame part 320 is made of, for example, a metal such as stainless steel, iron, or aluminum.
  • a low expansion metal is particularly suitable, and for example, Invar, Super Invar, Novinite (registered trademark), and the like can be more preferably used.
  • a plurality of inkjet heads 310 are fixed to the frame portion 320 using two adjustment screws 323a and 323b and three fixing screws 324a to 324c, respectively.
  • the frame portion 320 is provided with two protrusion receiving portions 322a and 322b (attachment receiving portions) at portions facing the inkjet heads 310, respectively.
  • the projection receiving portions 322a and 322b are concave portions corresponding to the shapes of the projection portions 312a and 312b of the inkjet head 310 described later, and one side surface thereof is inclined at a predetermined angle in the arrangement direction (width direction) of the inkjet head 310. ing. Plungers 327a and 327b are provided on the side surface opposite to the inclined side surface (inclined surface). These plungers 327a and 327b urge the protrusions 312a and 312b of the inkjet head 310 so that they are arranged in a biased manner inside the protrusion receiving parts 322a and 322b of the frame part 320. As will be described later, each inkjet head 310 can adjust the fixed position within a predetermined range with respect to the frame portion 320.
  • each inkjet head 310 includes a plurality of head chips 311 inside a housing 330.
  • head chips 311 are shown as an example.
  • the housing 330 is made of, for example, resin, and is provided with protrusions 312a and 312b (attachment protrusions) on the surface facing the frame part 320.
  • protrusions 312a and 312b attachment protrusions
  • supply connectors 315a and 315b communicating with the internal head chip 311 penetrate to the outside.
  • the shapes of the protrusions 312a and 312b correspond to the protrusion receiving parts 322a and 322b, and one side surface facing the inclined surface provided in the above-described protrusion receiving parts 322a and 322b is inclined at a predetermined angle. Yes. Therefore, the shape of the protrusions 312a and 312b is such that the width in the width direction becomes narrower toward the tip.
  • the inkjet head 310 is fixed to the frame part 320 by adjusting screws 323a and 323b and fixing screws 324a to 324c in such a positional relationship that the protruding parts 312a and 312b are arranged to face and be fitted to the protruding parts 322a and 322b of the frame part 320. Has been.
  • the housing 330 is open, and one end surface of the internal head chip 311.
  • the head chip 311 may be any type of conventionally used head chip.
  • a large number (for example, 128) of nozzles (ink nozzle openings) are arranged in a predetermined pattern such as a staggered pattern on the end face of the head chip 311 exposed from the housing 330, and at least the recording medium M In the width direction of the recording medium M, there is no gap across the width of the recording medium M with a predetermined resolution.
  • the ink supplied from the outside via the supply connectors 315a and 315b is sent to the pressure chambers for ejecting ink from the nozzles in the head chip 311.
  • the ink in the pressure chambers is deformed by these pressure chambers. Is pressurized and discharged from each nozzle.
  • the elastic member 340 is used as a shock-absorbing buffer member when the inkjet head 310 is attached to the frame portion 320, and in a normal state after the line head 303 is assembled, it is pushed from the inkjet heads 310 on both sides. Thus, the inkjet head 310 fixed to the frame part 320 is prevented from moving in the width direction.
  • the elastic member 340 is not particularly limited, but various rubber materials such as silicon rubber, urethane rubber, chloroprene rubber, or fluoro rubber, or sponge materials such as ethylene propylene diene monomer (EPDM) foam, Polyurethane sponge or nitrile sponge can be used.
  • FIGS. 15A and 15B are a side view and a top view, respectively, of a portion corresponding to one inkjet head 310 in the line head 303.
  • 16A and 16B are diagrams for explaining a fixed portion of the inkjet head 310.
  • FIG. 15A and 15B are diagrams for explaining a fixed portion of the inkjet head 310.
  • two adjustment screws 323a and 323b are provided at the positions of the two protrusion receiving portions 322a and 322b, respectively.
  • the fixing screws 324a to 324c are provided at positions different from the protrusion receiving portions 322a and 322b.
  • the adjustment screw 323a is provided with a screw thread and a thread groove over a predetermined length at its tip, and a long hole 325a provided in the protrusion receiving portion 322a (see FIG. 16B). And is engaged with a screw hole 313a provided in the protrusion 312a of the inkjet head 310 with an appropriate length.
  • the adjustment screw 323b is similarly provided with a screw thread and a screw groove, and penetrates the long hole 325b and meshes with the screw hole 313b with an appropriate length.
  • the positions of the heads of the adjustment screws 323a and 323b are determined by the length of the meshing portion, and the distance between the frame portion 320 and the inkjet head 310 is defined.
  • each of the elongated holes 325a and 325b has a shape extending in the width direction, and the adjustment screws 323a and 323b and the inkjet head 310 can move in the width direction relative to the frame portion 320.
  • These adjustment screws 323a and 323b and screw holes 313a and 313b constitute a distance adjustment mechanism.
  • the fixing screws 324a to 324c are engaged with and fitted into the hole portions 326a to 326c provided in the frame portion 320, respectively.
  • no groove or the like is provided at a position corresponding to the fixing screws 324a to 324c, and the length of the tip of the fixing screws 324a to 324c protrudes from the surface of the frame portion 320 facing the inkjet head 310.
  • the frame part 320 and the inkjet head 310 are separated from each other.
  • the fixing screws 324a to 324c may be fixed with an adhesive or the like after the length is adjusted.
  • the protrusions 312a and 312b and the protrusion receivers 322a and 322b have shapes corresponding to each other, but the protrusion receivers 322a and 322b are formed wider, and the protrusions It is relatively movable within a predetermined range in the width direction in a state where 312a and 312b are fitted.
  • the side surfaces having a predetermined inclination angle provided on the protrusion receiving portions 322a and 322b and the protrusion portions 312a and 312b are inclined at the same angle in the width direction of the recording medium M in the line head 303 of the present embodiment. They are in contact with each other on the surface. And it is urged
  • FIG. 17A, FIG. 17B, and FIG. 17C are diagrams illustrating a method for adjusting the position of the inkjet head 310.
  • FIG. 17A, FIG. 17B, and FIG. 17C are diagrams illustrating a method for adjusting the position of the inkjet head 310.
  • the interval between the frame portion 320 and the inkjet head 310 is narrowed. Since the contact state between the inclined surface of the protrusion receiving portion 322a and the inclined surface of the protruding portion 312a is maintained by the plunger 327a, as the distance between the protruding portion 322a and the protruding portion 312a decreases, FIGS. 17B and 17C.
  • the frame part 320 moves to the left relative to the ink jet head 310 (the ink jet head 310 moves to the right relative to the frame part 320).
  • the positional relationship between the frame unit 320 and the inkjet head 310 is determined in advance by marking or the like, and the markings and the positions of the frame unit 320 and the inkjet head 310 are determined using a camera or the like.
  • the fixing screws 324a to 324c are engaged with the holes 326a to 326c, and the rotation amounts of the fixing screws 324a to 324c are set so as to be equal to the distance between the frame part 320 and the inkjet head 310 defined by the adjusting screws 323a and 323b.
  • the inkjet head 310 is fixed to the frame part 320 at an appropriate position.
  • the nozzle surface related to the head chip 311 of the inkjet head 310 and the recording medium M are arranged.
  • this change in distance can be adjusted by appropriately controlling the speed and timing of the ink ejected from the nozzles.
  • the ink jet head 310 provided with the ink nozzles arranged on the bottom surface is fixed to the frame portion 320 on the opposite surface substantially parallel to the bottom surface.
  • Protrusions 312a and 312b are provided on the surface of the inkjet head 310 that is fixed to the frame portion 320
  • projection receiving portions 322a and 322b are provided on the surface of the frame portion 320 that faces the inkjet head 310.
  • the inkjet head 310 since the bottom surface on which the ink nozzles are arranged and the surface fixed to the frame part 320 are arranged on the opposite side, it is not necessary to provide any structure on the side surface, so that it is more compact.
  • a line head in which the inkjet heads 310 are arranged can be formed.
  • the distance between the ink jet head 310 and the frame portion 320 is associated with the deviation in the width direction to adjust the position of the ink jet head 310. Therefore, the inkjet head 310 can be easily aligned.
  • the surfaces of the projection receiving portions 322a and 322b of the frame portion 320 facing the inclined surfaces provided on the protruding portions 312a and 312b of the inkjet head 310 are the same inclined surfaces as the inclined surfaces, and are in contact with each other. By doing so, the adjustment operation related to the alignment can be performed smoothly and stably.
  • the adjustment screws 323a and 323b are brought into contact with the other of the one inclined surface while maintaining the contact state between the protrusions 312a and 312b and the protrusion receiving portions 322a and 322b using the plungers 327a and 327b. Since the position is adjusted, the position of the inkjet head 310 can be adjusted stably and reliably regardless of the gap provided between the protrusions 312a and 312b and the protrusion receiving portions 322a and 322b.
  • the inkjet head 310 is configured to incorporate a plurality of head chips 311, the range in which the position can be determined with high accuracy by assembling the head chip 311 is collectively formed as one inkjet head 310, and one inkjet When it is difficult to assemble the head 310 with high accuracy, it is possible to arrange the nozzles of the entire line head 303 with high accuracy by arranging the individual inkjet heads 310 in parallel and performing the above-described position adjustment. Become.
  • the elastic member 340 can obtain an effect of maintaining the interval between the adjacent inkjet heads 310 more stably.
  • FIG. 18 is an enlarged perspective view showing a portion related to one inkjet head 310a in the line head 303a of the fourth embodiment.
  • the inkjet head 310a of the line head 303a of the fourth embodiment is provided with projections 318a and 318b having different shapes instead of the projections 312a and 312b of the inkjet head 310 of the third embodiment.
  • the frame portion 320a is provided with taper pins 329a and 329b (tapered pins), and the protrusion receiving portions 328a and 328b corresponding to the protrusion portions 318a and 318b are the protrusion receiving portions 322a and 322a in the frame portion 320 of the third embodiment. It is provided instead of 322b.
  • Other configurations are the same in the line head 303 of the third embodiment and the line head 303a of the fourth embodiment, and the same reference numerals are given and description thereof is omitted.
  • FIG. 19 is a side view of the line head 303a of the fourth embodiment.
  • the projection receiving portion 328a of the frame portion 320a and the projection portion 318a of the inkjet head 310a are not provided with inclined surfaces.
  • the protrusion 318a is provided with a stepped portion. The width in the width direction of the protrusion 318a is narrower than the width of the protrusion receiving portion 328a, and the movement of the position in the width direction can be adjusted.
  • the taper pins 329a and 329b are pins whose tip portions are tapered, and mesh with holes provided at the positions of the projection receiving portions 328a and 328b of the frame portion 320a.
  • the taper pins 329a and 329b are moved up and down with respect to the frame portion 320a and can be set at appropriate positions.
  • the heads of the taper pins 329a and 329b constitute a position adjusting unit.
  • the tapered pins 329a and 329b are arranged so that the tapered portions thereof are in contact with the corners of the stepped portions of the projecting portions 318a and 318b.
  • the contact positions of the taper pins 329a and 329b with respect to the protrusions 318a and 318b change, and become closer to the base of the tapered portion.
  • the axial positions of the taper pins 329a and 329b are moved to the left, and the frame portion 320a is moved to the left with respect to the inkjet head 310a.
  • the contact positions of the taper pins 329a and 329b with the protrusions 318a and 318b change in the tip direction of the tapered portion. Accordingly, in FIG. 19, the rotation shafts of the taper pins 329a and 329b move to the right, and the frame part 320a moves to the right with respect to the inkjet head 310a.
  • the positional relationship between the frame portion 320a and the inkjet head 310a is determined in advance by marking or the like.
  • the frame portion 320a and the inkjet head 310a are moved in the width direction by adjusting screws 323a and 323b. Temporarily fix in a movable state.
  • the alignment in the width direction can be accurately performed. .
  • the adjustment screws 323a and 323b are tightened to fix the frame portion 320a and the inkjet head 310a, and then the fixing screws 324a to 324c are engaged with the hole portions 326a to 326c so that the distance between the frame portion 320 and the inkjet head 310 becomes equal. In this manner, the amount of rotation of the fixing screws 324a to 324c is adjusted.
  • the line head 303a is provided with the tapered pins 329a and 329b in which the tapered portions are in contact with the protrusions 318a and 318b.
  • the taper pins 329a and 329b are arranged so that the heads of the taper pins 329a and 329b are located on the surface of the frame part 320a opposite to the joint surface with the ink jet head 310a. By rotating the heads, the taper pins 329a and 329b are arranged.
  • the positional relationship between the frame portion 320a and the inkjet head 310a can be easily changed by changing the contact position of the taper-shaped portion with the projections 318a and 318b. Accordingly, it is possible to adjust the position of the inkjet head 310a with high accuracy in an arrangement that does not require an extra space in the nozzle arrangement surface direction and can be easily adjusted.
  • the relative position between the frame part 320a and the inkjet head 310a can be adjusted with high accuracy in the width direction by moving the position in the vertical direction using the taper pins 329a and 329b.
  • the position of the inkjet head 310a can be easily adjusted without requiring a complicated configuration.
  • the present invention is not limited to the third and fourth embodiments described above, and various modifications can be made.
  • the protrusions 312a and 312b are provided on the ink jet head 310 and the protrusion receiving portions 322a and 322b are provided on the frame part 320.
  • the protrusion receiving part and the frame part 320 protrude on the ink jet head 310.
  • the structure which provides a part may be sufficient.
  • the frame-shaped frame portion 320 is described as an example of the support member. However, other shapes, for example, a wide plate-like support member may be used.
  • the inkjet heads 310 and 310a are arranged so that the nozzle surface and the fixed surface to the frame part 320 are opposite to each other, but other positional relationships, for example, these surfaces are adjacent to each other. It may be a plane (for example, orthogonal). Even with such an arrangement, no extra space is required in addition to the space occupied by the frame portion 320 and the inkjet heads 310 and 310a. Further, the inkjet heads 310 and 310a may not be formed such that the nozzle surface and the surface fixed to the frame unit 320 are parallel to each other.
  • the frame portion 320 is not limited to a frame shape, and may be a ladder shape or a shape in which comb teeth are provided on one columnar member.
  • the protrusions 312a and 312b provided on one surface of the ink jet head 310 and the protrusion receiving parts 322a and 322b of the frame part 320 that receives the protrusions 312a and 312b are respectively the ink jet head 310 and the frame part.
  • the shape is composed of one surface inclined with respect to the surface facing 320 and three surfaces perpendicular to each other, but two or more surfaces may be inclined. In this case, at least one inclined surface is in contact with each other, and the position of the inkjet head 310 may be adjusted by the relative positional relationship between the inclined surfaces. For example, in FIG.
  • the protrusions 312a and 312b and the protrusion receiving parts 322a and 322b are formed in a shape having inclined surfaces symmetrically with respect to the screw holes 313a and 313b and the long holes 325a and 325b, respectively. It may be possible to make it contact. Alternatively, in each of the inkjet head 310 and the frame unit 320, two inclined surfaces may be provided in parallel at the same interval, and the contact state may be maintained on both surfaces. Moreover, it is not restricted to the shape where a width
  • the shapes of the protrusions 312a and 312b and the protrusion receiving portions 322a and 322b are inclined in the width direction.
  • the position may be adjusted by providing an inclination to the direction.
  • the protrusions 312a and 312b and the protrusion receiving parts 322a and 322b are described as having an inclined surface. However, only one of them has an inclined surface and the other is simple. A concave or convex portion may be used. By changing the position at which the end of the concave portion or convex portion contacts the inclined surface, the position can be adjusted with certainty and high accuracy.
  • the taper pins 329a and 329b are used to contact the corners of the stepped portions of the protrusions 318a and 318b has been described as an example, but the contact portions may not be stepped.
  • the tapered pin may be a tapered pin having a tapered shape only in the width direction.
  • the screw having a flat tip may be in contact with the inclined surface.
  • the screw may be provided obliquely so as to be perpendicular to the inclined surface, instead of being provided perpendicular to the facing surface between the frame part 320 and the inkjet head 310.
  • the elastic member 340 is provided between the ink jet heads 310.
  • the ink jet heads 310 are arranged with high accuracy and space saving even without the elastic member. I can do it.
  • one line head is arranged to form an image.
  • a plurality of line heads 303 are arranged in the conveyance direction of the recording medium M by the rotary drum 301.
  • 304, 305, and 306 can be arranged.
  • it is possible to form a color image by enabling each line head 303 to 306 to eject different colors of ink, for example, four colors of YMCK.
  • the inkjet heads 310 incorporating a plurality of head chips are arranged in a line in the width direction, but one inkjet head may correspond to one head chip.
  • the arrangement of the ink jet heads may be a plurality of lines or a staggered pattern instead of a single line.
  • the vertical relationship between the lower end position of the housing 330 in the inkjet heads 310 and 310a and the position of the nozzle surface of the head chip 311 can be set as appropriate. That is, it is good also as arrange
  • the configuration in which the distance between the inkjet heads 310 and 310a and the frame portions 320 and 320a is more reliably set using the fixing screws 324a to 324c has been described.
  • the line heads 303 and 303a have been described as being used in a one-pass drawing type ink jet recording apparatus. However, as long as a plurality of ink jet heads are attached to the frame portions 320 and 320a, It is not limited to the one-pass drawing method.
  • the present invention can be used for an ink jet head and a line head for discharging ink.

Abstract

Provided is a compact inkjet head in which nozzles can be highly accurately arranged. An inkjet head comprises inkjet head elements on which ink nozzles for discharging ink are arranged. The inkjet head is characterized in that the inkjet head elements are fitted in and held by a head holding member and in that the head holding member is provided with deformable sections which can be deformed in order to allow the positions and/or the orientations of the inkjet head elements to be adjusted.

Description

インクジェットヘッド及びラインヘッドInkjet head and line head
　この発明は、インクジェットヘッド及びラインヘッドに関する。 The present invention relates to an inkjet head and a line head.
　従来、所定のパターンで配列された複数の微細なノズルからインク滴を吐出させるインクジェットヘッドを備え、当該インクジェットヘッドの動作を制御して記録媒体上に画像を形成するインクジェット記録装置がある。 Conventionally, there is an ink jet recording apparatus that includes an ink jet head that ejects ink droplets from a plurality of fine nozzles arranged in a predetermined pattern, and controls the operation of the ink jet head to form an image on a recording medium.
　近年、インクジェット記録装置に要求される出力画像の解像度及び画像出力速度が上昇し、インクジェット記録装置では、インクジェットヘッドの各ヘッドチップをより高密度且つ高精度に配列する必要が生じている。このとき、単純に複数のヘッドチップを横並びさせることで生じるヘッドチップ両端のマージン、ヘッドチップ同士の接合面の形成、接合精度や各ノズルのインク吐出特性の違いといった種々の影響を避けるため、以前より、複数のヘッドチップを千鳥格子状に配置した構成が用いられている。 In recent years, the resolution and image output speed of an output image required for an ink jet recording apparatus have increased, and in the ink jet recording apparatus, it is necessary to arrange the head chips of the ink jet head with higher density and higher accuracy. At this time, in order to avoid various effects such as margins at both ends of the head chip, formation of bonding surfaces between the head chips, bonding accuracy and ink discharge characteristics of each nozzle, which are generated by simply arranging a plurality of head chips side by side, Therefore, a configuration in which a plurality of head chips are arranged in a staggered pattern is used.
　しかしながら、複数のヘッドチップを二次元面内の異なる線上に配置させると、今度は、各ヘッドチップの相対位置関係を精度良く定めるのが困難になるという問題がある。そこで、特許文献１には、各ヘッドチップを所望の位置に取り付けるための取付基板を用いる技術が開示されている。また、特許文献２には、支持基板に取り付けられた複数のヘッドチップについて、ネジを用いて各々支持基板に対する取付位置を調整するための調整機構を設ける技術が開示されている。 However, if a plurality of head chips are arranged on different lines in the two-dimensional plane, there is a problem that it is difficult to accurately determine the relative positional relationship between the head chips. Therefore, Patent Document 1 discloses a technique using an attachment substrate for attaching each head chip to a desired position. Patent Document 2 discloses a technique of providing an adjustment mechanism for adjusting the mounting position of each head chip attached to a support substrate with respect to the support substrate using screws.
　また、近年、インクジェット記録装置により画像形成される画像の高精度化、印刷速度の高速度化の要望に応えるため、複数のインクジェットヘッドを千鳥格子状に配置したラインヘッドを用いて記録媒体の搬送のみで描画をおこなう１パス描画方式が提案されている（例えば、特許文献３参照）。 In recent years, in order to meet the demand for higher accuracy of images formed by an ink jet recording apparatus and higher printing speed, a recording medium using a line head in which a plurality of ink jet heads are arranged in a staggered pattern is used. A one-pass drawing method has been proposed in which drawing is performed only by conveyance (see, for example, Patent Document 3).
　このようなラインヘッドにおいては、主として記録媒体の搬送方向に略直交する幅方向の長さがプリンタ全体の大きさに影響を与えるため、インクジェット記録装置全体の小型化を図る上では当該幅方向の長さを小さくすることが望ましい。 In such a line head, the length in the width direction substantially orthogonal to the conveyance direction of the recording medium affects the overall size of the printer. Therefore, in order to reduce the size of the entire inkjet recording apparatus, It is desirable to reduce the length.
　また、このようなラインヘッドでは、複数のインクジェットヘッドを正確な相対位置関係で配置する必要がある。そこで、従来、ラインヘッドに用いられるインクジェットヘッドには、キャリッジなどのヘッド取付固定部材に固定するためのウィング（突起部）やフランジが設けられている。これらのウィングやフランジは、インクジェットヘッドの側面に設けられるが、特許文献４には、これらについて衝突破損を防ぐ形状を用いる技術が開示されている。また、特許文献５には、インクジェットヘッドを支持部材に取り付ける部分の形状を球状としてその取り付け角度を変更することでインクジェットヘッドの位置を微調整する技術が開示されている。 In such a line head, it is necessary to arrange a plurality of inkjet heads in an accurate relative positional relationship. Therefore, conventionally, an ink jet head used for a line head is provided with a wing (projection) and a flange for fixing to a head mounting fixing member such as a carriage. These wings and flanges are provided on the side surface of the ink jet head, and Patent Document 4 discloses a technique using a shape for preventing collision damage. Patent Document 5 discloses a technique for finely adjusting the position of the ink jet head by changing the mounting angle of the portion of the ink jet head attached to the support member in a spherical shape.
特開２０００－３５１２１１号公報JP 2000-351211 A 特開２００７－９０６９５号公報JP 2007-90695 A 特開２００７－９０６９３号公報JP 2007-90693 A 特開２０１０－２６４７４７号公報JP 2010-264747 A 特開２０１０－７６３６０号公報JP 2010-76360 A
　しかしながら、高解像度且つ高精度のインクジェットヘッドにおいて、特許文献１のように、ヘッドチップを単に取り付けるだけであると、取付基板の形成精度以上の精度の向上が困難であり、また、従来の位置調整機構では、特許文献２に示されているように、ヘッドチップに並列に設けられたネジなどの構造物が不要な場所を占めることから小型化が困難であるという課題があった。 However, in a high-resolution and high-precision inkjet head, if the head chip is simply attached as in Patent Document 1, it is difficult to improve the accuracy beyond the formation accuracy of the mounting substrate, and the conventional position adjustment is performed. As shown in Patent Document 2, the mechanism has a problem that it is difficult to reduce the size because a structure such as a screw provided in parallel with the head chip occupies an unnecessary place.
　この発明の目的は、高精度なノズル配置が可能な小型のインクジェットヘッドを提供することにある。 An object of the present invention is to provide a small inkjet head capable of highly precise nozzle arrangement.
　また、各インクジェットヘッドの解像度を上げてより高精度の画像を得る場合等に、複数のインクジェットヘッドを密に配置すると、隣合うインクジェットヘッドどうしの間に各インクジェットヘッドの支持体に対する位置決めや固定のための取付機構を設けるスペースを確保するのが困難となる。
　なお、複数のインクジェットヘッドどうしが隣り合わない側に取付機構を設けると、ラインヘッドの記録媒体の搬送方向の長さが大きくなるため、結果として、プリンタ全体の大きさが大きくなってしまうといった問題が生じる。 In addition, when a plurality of inkjet heads are densely arranged, for example, when a higher-accuracy image is obtained by increasing the resolution of each inkjet head, positioning and fixing of each inkjet head with respect to the support of each inkjet head is performed between adjacent inkjet heads. Therefore, it is difficult to secure a space for providing the mounting mechanism.
If a mounting mechanism is provided on the side where a plurality of inkjet heads are not adjacent to each other, the length of the line head in the conveyance direction of the recording medium increases, resulting in an increase in the size of the entire printer. Occurs.
　本発明は、上記事情に鑑みてなされたもので、複数のインクジェットヘッドを効率良く配置して省スペース化を図ることができるインクジェットヘッド及びラインヘッドの提供を課題とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inkjet head and a line head capable of efficiently arranging a plurality of inkjet heads to save space.
　また、従来のインクジェットヘッドを並列に配置すると、側面に設けられたウィングやフランジのための余分なスペースが必要となる。特に、両端部のインクジェットヘッドに係るウィングやフランジのスペースが必要となり、近年のインクジェット記録装置の高精度化や小型化の要求にも関わらず、ラインヘッドのサイズが大きくなるという課題がある。 Also, when conventional inkjet heads are arranged in parallel, extra space for wings and flanges provided on the side surfaces is required. In particular, the space of the wings and flanges related to the ink jet heads at both ends is required, and there is a problem that the size of the line head is increased despite the recent demand for higher accuracy and smaller size of the ink jet recording apparatus.
　この発明の目的は、余分なスペースの発生を抑えながら高精度なノズル配置を保ちつつ複数のインクジェットヘッドを配列可能なラインヘッドを提供することにある。 An object of the present invention is to provide a line head capable of arranging a plurality of inkjet heads while maintaining a highly accurate nozzle arrangement while suppressing generation of extra space.
　上記目的を達成するため、請求項１に記載の発明は、
　インクを吐出する複数のインクノズルが配列されたインクジェットヘッドエレメントを複数配列したインクジェットヘッドにおいて、
　前記複数のインクジェットヘッドエレメントは、ヘッド保持部材と嵌合で各々保持され、
　前記ヘッド保持部材には、前記複数のインクジェットヘッドエレメントの位置及び／又は姿勢を調整するための変形が可能な変形部が各々設けられている
　ことを特徴としている。 In order to achieve the above object, the invention described in claim 1
In an inkjet head in which a plurality of inkjet head elements in which a plurality of ink nozzles that eject ink are arranged are arranged,
The plurality of inkjet head elements are each held by fitting with a head holding member,
Each of the head holding members is provided with a deformable portion that can be deformed to adjust the positions and / or postures of the plurality of inkjet head elements.
　請求項２記載の発明は、請求項１記載のインクジェットヘッドにおいて、
　前記インクジェットヘッドエレメントの位置及び／又は姿勢の変更に係る前記調整の量を定める調整機構を備える
　ことを特徴としている。 The invention according to claim 2 is the ink jet head according to claim 1,
An adjustment mechanism that determines the amount of adjustment related to a change in the position and / or orientation of the inkjet head element is provided.
　請求項３記載の発明は、請求項２記載のインクジェットヘッドにおいて、
　前記ヘッド保持部材に固定されるヘッド調整部材を備え、
　前記調整機構は、前記ヘッド調整部材に設けられている
　ことを特徴としている。 According to a third aspect of the present invention, in the ink jet head according to the second aspect,
A head adjustment member fixed to the head holding member;
The adjustment mechanism is provided on the head adjustment member.
　請求項４記載の発明は、請求項３記載のインクジェットヘッドにおいて、
　前記ヘッド保持部材には、前記複数のインクジェットヘッドエレメントを各々嵌合される位置へ導入するための複数の切欠部が設けられており、
　前記ヘッド調整部材は、前記インクジェットヘッドエレメントが嵌合された前記切欠部の開放端を塞ぐように前記ヘッド保持部材に固定される
　ことを特徴としている。 According to a fourth aspect of the present invention, in the inkjet head according to the third aspect,
The head holding member is provided with a plurality of notches for introducing the plurality of inkjet head elements to positions where they are respectively fitted.
The head adjustment member is fixed to the head holding member so as to close an open end of the cutout portion into which the inkjet head element is fitted.
　請求項５記載の発明は、請求項２～４の何れか一項に記載のインクジェットヘッドにおいて、
　前記調整機構は、前記調整の量に応じて前記インクジェットヘッドエレメントを前記変形部に押し込む複数の押し込み部を有する
　ことを特徴としている。 The invention according to claim 5 is the inkjet head according to any one of claims 2 to 4,
The adjustment mechanism includes a plurality of pushing portions that push the ink-jet head element into the deformation portion according to the amount of adjustment.
　請求項６記載の発明は、請求項５記載のインクジェットヘッドにおいて、
　前記ヘッド保持部材には、前記変形部の前記インクジェットヘッドエレメントとの接触面と反対側に、所定の幅の空隙が設けられていることを特徴としている。 The invention according to claim 6 is the ink jet head according to claim 5,
The head holding member is characterized in that a gap having a predetermined width is provided on the opposite side of the deformable portion from the contact surface with the inkjet head element.
　請求項７記載の発明は、請求項２～６の何れか一項に記載のインクジェットヘッドにおいて、
　前記ヘッド保持部材には、前記複数のインクジェットヘッドエレメントが二列のヘッド列に配列され、
　前記調整機構は、当該複数のインクジェットヘッドエレメントのそれぞれに対し、当該インクジェットヘッドエレメントと、隣接する他の前記インクジェットヘッドエレメントとの間以外の位置に設けられている
　ことを特徴としている。 The invention according to claim 7 is the inkjet head according to any one of claims 2 to 6,
In the head holding member, the plurality of inkjet head elements are arranged in two head rows,
The adjustment mechanism is provided for each of the plurality of ink jet head elements at a position other than between the ink jet head element and another adjacent ink jet head element.
　請求項８記載の発明は、請求項７記載のインクジェットヘッドにおいて、
　二列の前記ヘッド列は、平行して設けられ、
　前記調整機構は、前記複数のインクジェットヘッドエレメントのそれぞれに対し、前記ヘッド列と直交する方向であって一方の前記ヘッド列の前記インクジェットヘッドエレメントと、他方の前記ヘッド列の前記インクジェットヘッドエレメントとが対向する側とは反対の側に設けられる
　ことを特徴としている。 The invention according to claim 8 is the ink jet head according to claim 7,
Two rows of the head rows are provided in parallel,
The adjusting mechanism is configured such that, for each of the plurality of inkjet head elements, the inkjet head element of one of the head rows and the inkjet head element of the other head row are orthogonal to the head row. It is characterized by being provided on the opposite side of the opposite side.
　請求項９記載の発明は、請求項１～８の何れか一項に記載のインクジェットヘッドにおいて、
　前記インクジェットヘッドエレメントは、
　前記複数のインクノズルからインクを吐出させるためのインクを蓄えるインクリザーバーを備え、
　前記インクリザーバーには、溝部が設けられ、
　当該溝部が前記ヘッド保持部材と嵌合する
　ことを特徴としている。 The invention according to claim 9 is the inkjet head according to any one of claims 1 to 8,
The inkjet head element is
An ink reservoir for storing ink for discharging ink from the plurality of ink nozzles;
The ink reservoir is provided with a groove,
The groove is fitted with the head holding member.
　請求項１０記載の発明は、請求項９記載のインクジェットヘッドにおいて、
　前記インクリザーバーの各々にインクを供給する共通流路部材を備え、
　前記インクリザーバーには、それぞれ外部と連通するインク流路が設けられ、
　前記共通流路部材は、当該インク流路を覆うように設けられ、前記インク流路を介して前記インクリザーバーにインクを供給する
　ことを特徴としている。 The invention according to claim 10 is the ink jet head according to claim 9,
A common flow path member for supplying ink to each of the ink reservoirs;
Each ink reservoir is provided with an ink flow path communicating with the outside.
The common flow path member is provided so as to cover the ink flow path, and supplies the ink to the ink reservoir via the ink flow path.
　請求項１１記載の発明は、請求項１０記載のインクジェットヘッドにおいて、
　前記共通流路部材は、前記複数のインクリザーバーに各々対応する複数のブロックに区分され、当該複数のブロックは、隣接する他のブロックとそれぞれ壁面に設けられた開口同士で連通していることを特徴としている。 The invention according to claim 11 is the ink jet head according to claim 10,
The common flow path member is divided into a plurality of blocks respectively corresponding to the plurality of ink reservoirs, and the plurality of blocks communicate with other adjacent blocks through openings provided on the respective wall surfaces. It is a feature.
　請求項１２記載の発明は、請求項１０又は１１記載のインクジェットヘッドにおいて、
　前記インクリザーバーに設けられた前記インク流路は、当該インクリザーバーから外側に突起した形状を有し、
　当該突起形状部分と前記共通流路部材との隙間は、弾性部材により充填されている
　ことを特徴としている。 The invention according to claim 12 is the ink jet head according to claim 10 or 11,
The ink flow path provided in the ink reservoir has a shape protruding outward from the ink reservoir,
A gap between the protrusion-shaped part and the common flow path member is filled with an elastic member.
　また、以上の課題を解決するために、請求項１３に記載の発明は、
　液滴を吐出する複数のノズル孔が形成されたノズル基板を具備するインクジェットヘッドにおいて、
　前記ノズル基板が一端部に取り付け固定されるとともに、内側に当該インクジェットヘッドを構成する構成部品が配置された筐体を備え、
　前記筐体の前記ノズル基板が取り付け固定された一端部側と反対となる他端部側は、前記一端部側から前記他端部側に亘る一方向に略直交する断面の寸法が前記一端部側の前記一方向に略直交する断面の寸法よりも小さく形成され、
　前記他端部側の外面に当該インクジェットヘッドを支持する支持体に取り付けられる支持体取付部が設けられていることを特徴としている。 In order to solve the above problems, the invention according to claim 13 is
In an inkjet head comprising a nozzle substrate in which a plurality of nozzle holes for discharging droplets are formed,
The nozzle substrate is attached and fixed to one end portion, and includes a housing in which components constituting the inkjet head are arranged on the inside.
The other end side of the housing opposite to the one end side to which the nozzle substrate is mounted and fixed has a cross-sectional dimension that is substantially perpendicular to one direction from the one end side to the other end side. Formed smaller than the dimension of the cross section substantially perpendicular to the one direction on the side,
A support attachment portion that is attached to a support that supports the inkjet head is provided on the outer surface of the other end portion.
　請求項１４に記載の発明は、請求項１３に記載のインクジェットヘッドにおいて、
　前記筐体は、
　前記一端部側に設けられ、前記一方向に略直交する断面の寸法が前記一方向に沿って略等しい大寸法部と、
　前記他端部側に設けられ、前記一方向に略直交する断面の寸法が前記大寸法部よりも小さく、且つ、前記一方向に略直交する断面の寸法が前記一方向に沿って略等しい小寸法部と、を有し、
　前記小寸法部の外面に前記支持体取付部が設けられていることを特徴としている。 The invention according to claim 14 is the inkjet head according to claim 13,
The housing is
A large-sized portion provided on the one end side and having a cross-sectional dimension substantially equal to the one direction and substantially equal along the one direction;
Provided on the other end side, the cross-sectional dimension approximately perpendicular to the one direction is smaller than the large dimension part, and the cross-sectional dimension approximately orthogonal to the one direction is substantially equal along the one direction. A dimension part, and
The support attachment part is provided on the outer surface of the small dimension part.
　請求項１５に記載の発明は、請求項１３又は１４に記載のインクジェットヘッドにおいて、
　前記支持体取付部は、前記他端部側の外面から突出した突起部を有し、
　前記突起部が前記支持体に設けられた溝部と係合することで、当該インクジェットヘッドを所定方向に位置決めすることを特徴としている。 The invention according to claim 15 is the ink jet head according to claim 13 or 14,
The support attachment portion has a protrusion protruding from the outer surface on the other end side,
The inkjet head is positioned in a predetermined direction by engaging the protrusion with a groove provided on the support.
　請求項１６に記載の発明は、請求項１５に記載のインクジェットヘッドにおいて、
　前記支持体には、所定方向に沿って配設される複数のインクジェットヘッドの各々の前記突起部に対応させて前記溝部が複数設けられ、
　前記複数の溝部に前記複数の突起部が係合することで、前記複数のインクジェットヘッドをその並び方向に位置決めすることを特徴としている。 The invention according to claim 16 is the ink jet head according to claim 15,
The support is provided with a plurality of the groove portions corresponding to the protrusions of the plurality of inkjet heads arranged along a predetermined direction,
The plurality of protrusions are engaged with the plurality of grooves to position the plurality of inkjet heads in the arrangement direction.
　請求項１７に記載の発明は、請求項１３又は１４に記載のインクジェットヘッドにおいて、
　前記支持体に前記支持体取付部が取り付けられることで、当該インクジェットヘッドを所定方向に位置決めする第１位置決め機構部を更に備えることを特徴としている。 The invention according to claim 17 is the ink jet head according to claim 13 or 14,
It is characterized by further comprising a first positioning mechanism portion for positioning the inkjet head in a predetermined direction by attaching the support attachment portion to the support.
　請求項１８に記載の発明は、請求項１３又は１４に記載のインクジェットヘッドにおいて、
　前記支持体には、所定方向に沿って配設される複数のインクジェットヘッドの各々の前記支持体取付部が取付けられ、
　前記筐体の当該インクジェットヘッドと隣合うインクジェットヘッドと対向する面に、前記複数のインクジェットヘッドを所定方向に位置決めする第２位置決め機構部を更に備えることを特徴としている。 The invention according to claim 18 is the ink jet head according to claim 13 or 14,
The support body is attached with the support body mounting portion of each of a plurality of inkjet heads arranged along a predetermined direction.
A second positioning mechanism unit that positions the plurality of inkjet heads in a predetermined direction is further provided on a surface of the housing facing the inkjet head adjacent to the inkjet head.
　請求項１９に記載の発明は、請求項１８に記載のインクジェットヘッドにおいて、
　前記第２位置決め機構部は、互いに係合する凸部及び凹部を有し、
　前記複数のインクジェットヘッドのうち、一方のインクジェットヘッドの前記筐体の他方のインクジェットヘッドと対向する面に前記凸部が設けられ、他方のインクジェットヘッドの前記筐体の一方のインクジェットヘッドと対向する面に前記凹部が設けられていることを特徴としている。 The invention according to claim 19 is the inkjet head according to claim 18,
The second positioning mechanism portion has a convex portion and a concave portion that engage with each other,
Of the plurality of inkjet heads, the convex portion is provided on a surface of the casing of one inkjet head facing the other inkjet head, and the surface of the casing of the other inkjet head facing the inkjet head of one of the casings. It is characterized in that the recess is provided.
　請求項２０に記載の発明は、請求項１３～１９の何れか一項に記載のインクジェットヘッドにおいて、
　前記ノズル基板は、複数個が千鳥状に配置されてなることを特徴としている。 The invention according to claim 20 is the ink jet head according to any one of claims 13 to 19,
A plurality of the nozzle substrates are arranged in a staggered manner.
　請求項２１に記載の発明のラインヘッドは、
　請求項１３～２０の何れか一項に記載のインクジェットヘッドが所定方向に沿って前記支持体に複数配設されてなることを特徴としている。 The line head of the invention according to claim 21
A plurality of ink jet heads according to any one of claims 13 to 20 are provided on the support along a predetermined direction.
　請求項２２に記載の発明は、請求項２１に記載のラインヘッドにおいて、
　前記支持体は、所定方向に沿って配設される複数のインクジェットヘッドの各々の前記支持体取付部が取付けられるフレーム部を有することを特徴としている。 The invention according to claim 22 is the line head according to claim 21,
The support has a frame part to which the support attachment part of each of a plurality of inkjet heads arranged along a predetermined direction is attached.
　また、上記目的を達成するため、請求項２３記載の発明は、
　複数のインクノズル開口部が一の面に配列されたインクジェットヘッドが複数配列され、支持部材により支持されてなるラインヘッドにおいて、
　前記インクジェットヘッドの前記一の面と異なる面、又は、前記支持部材の一の面の何れか一方には、取付突起が設けられ、他方には、当該取付突起を受ける取付受部が設けられ、
　前記取付突起と前記取付受部とが対面配置されて、前記インクジェットヘッドが前記支持部材に固定される
　ことを特徴とするラインヘッドである。 In order to achieve the above object, the invention according to claim 23 provides
In a line head in which a plurality of inkjet heads in which a plurality of ink nozzle openings are arranged on one surface are arranged and supported by a support member,
Either one of the surface different from the one surface of the inkjet head or the one surface of the support member is provided with an attachment protrusion, and the other is provided with an attachment receiving portion for receiving the attachment protrusion.
The mounting head and the mounting receiving portion are arranged to face each other, and the inkjet head is fixed to the support member.
　請求項２４記載の発明は、請求項２３記載のラインヘッドにおいて、
　前記インクジェットヘッドの前記一の面と異なる面は、当該一の面とは反対側の面であることを特徴としている。 The invention according to claim 24 is the line head according to claim 23,
The surface different from the one surface of the ink jet head is a surface opposite to the one surface.
　請求項２５記載の発明は、請求項２３又は２４記載のラインヘッドにおいて、
　前記取付突起又は前記取付受部の少なくとも何れか一方には、前記複数のインクノズル開口部からのインクの吐出により画像が形成される記録媒体の搬送方向に対して直交する幅方向に傾斜する傾斜面が設けられている
　ことを特徴としている。 The invention according to claim 25 is the line head according to claim 23 or 24,
At least one of the attachment protrusion and the attachment receiving portion is inclined to incline in the width direction perpendicular to the conveyance direction of the recording medium on which an image is formed by discharging ink from the plurality of ink nozzle openings. It is characterized by having a surface.
　請求項２６記載の発明は、請求項２５記載のラインヘッドにおいて、
　前記取付突起及び前記取付受部には、互いに対向する前記傾斜面が設けられていることを特徴としている。 The invention according to claim 26 is the line head according to claim 25,
The mounting protrusion and the mounting receiving portion are provided with the inclined surfaces facing each other.
　請求項２７記載の発明は、請求項２５又は２６記載のラインヘッドにおいて、
　前記取付突起は、その先端方向に向けて前記幅方向の幅が狭くなる形状を有することを特徴としている。 The invention according to claim 27 is the line head according to claim 25 or 26,
The mounting protrusion has a shape in which a width in the width direction becomes narrower toward a tip direction thereof.
　請求項２８記載の発明は、請求項２５記載のラインヘッドにおいて、
　前記支持部材又は前記インクジェットヘッドの一方に設けられた少なくとも一の前記傾斜面を他方の前記取付突起又は前記取付受部に接触させた状態で前記支持部材と前記インクジェットヘッドとの間の距離を変化させる距離調整機構を有することを特徴としている。 The invention according to claim 28 is the line head according to claim 25,
The distance between the support member and the inkjet head is changed in a state where at least one inclined surface provided on one of the support member or the inkjet head is in contact with the other attachment projection or the attachment receiving portion. It is characterized by having a distance adjusting mechanism.
　請求項２９記載の発明は、請求項２３又は２４記載のラインヘッドにおいて、
　前記支持部材の前記インクジェットヘッドと対向する面とは反対側の面には、前記支持部材に対する前記インクジェットヘッドの相対位置を調整するための位置調整部を備える
　ことを特徴としている。 The invention according to claim 29 is the line head according to claim 23 or 24,
A position adjustment unit for adjusting a relative position of the inkjet head with respect to the support member is provided on a surface of the support member opposite to the surface facing the inkjet head.
　請求項３０記載の発明は、請求項２９記載のラインヘッドにおいて、
　前記位置調整部は、先端方向へ向けて記録媒体の搬送方向に対して直交する幅方向の幅が狭くなる先細形状を有し、当該先細形状部分が前記インクジェットヘッドに設けられた前記取付突起又は前記取付受部と接して前記支持部材に対して上下方向に位置を調整可能に設けられている先細ピンの頭部であることを特徴としている。 The invention according to claim 30 is the line head according to claim 29,
The position adjusting unit has a tapered shape in which a width in a width direction perpendicular to the conveyance direction of the recording medium is narrowed toward a leading end direction, and the tapered portion is provided with the mounting protrusion or the mounting protrusion provided on the inkjet head. It is a head of a tapered pin provided in contact with the attachment receiving portion so that the position thereof can be adjusted in the vertical direction with respect to the support member.
　請求項３１記載の発明は、請求項２３～３０の何れか一項に記載のラインヘッドにおいて、
　前記インクジェットヘッドは、複数のインクノズル開口部が所定のパターンで配列されたヘッドチップを複数内蔵することを特徴としている。 The invention according to claim 31 is the line head according to any one of claims 23 to 30,
The inkjet head includes a plurality of head chips each having a plurality of ink nozzle openings arranged in a predetermined pattern.
　請求項３２記載の発明は、請求項２３～３１の何れか一項に記載のラインヘッドにおいて、
　隣接する前記インクジェットヘッドの間には、
　弾性部材を用いたスペーサー部が設けられていることを特徴としている。 The invention according to claim 32 is the line head according to any one of claims 23 to 31,
Between the adjacent inkjet heads,
A spacer portion using an elastic member is provided.
　本発明に従うと、インクジェットヘッドにおいて、小型且つ高精度なノズル配置が可能となるという効果がある。
　また、本発明によれば、複数のインクジェットヘッドを効率良く配置して省スペース化を図ることが出来る。
　また、本発明に従うと、ラインヘッドにおいて、余分なスペースを必要とせずに高精度なインクジェットヘッドの配置を保ちながら複数のインクジェットヘッドを配列可能となるという効果がある。 According to the present invention, there is an effect that a small and highly accurate nozzle arrangement is possible in the ink jet head.
Further, according to the present invention, a plurality of inkjet heads can be efficiently arranged to save space.
Further, according to the present invention, there is an effect that a plurality of inkjet heads can be arranged while maintaining a highly accurate inkjet head arrangement without requiring extra space in the line head.
本発明の第１実施形態のラインヘッドを示す斜視図である。It is a perspective view showing the line head of a 1st embodiment of the present invention. インクジェットヘッドの各構成を分解して示す図である。It is a figure which decomposes | disassembles and shows each structure of an inkjet head. インクジェットヘッドへの共通インクバッファーの接合について説明する図である。It is a figure explaining joining of a common ink buffer to an ink jet head. インクジェットヘッドへの共通インクバッファーの接合について説明する図である。It is a figure explaining joining of a common ink buffer to an ink jet head. インクジェットヘッドの組立手順を説明するための図である。It is a figure for demonstrating the assembly procedure of an inkjet head. インクジェットヘッドの組立手順を説明するための図である。It is a figure for demonstrating the assembly procedure of an inkjet head. インクジェットヘッドエレメントの位置の調整について説明する図である。It is a figure explaining adjustment of the position of an ink jet head element. インクジェットヘッドエレメントの位置の調整について説明する図である。It is a figure explaining adjustment of the position of an ink jet head element. インクジェットヘッドエレメントの位置の調整について説明する図である。It is a figure explaining adjustment of the position of an ink jet head element. 本発明を適用した第２実施形態のインクジェット記録装置の概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the inkjet recording device of 2nd Embodiment to which this invention is applied. 図６のインクジェット記録装置に備わるラインヘッドの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the line head with which the inkjet recording device of FIG. 6 is equipped. 図６のインクジェット記録装置に備わるラインヘッドの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the line head with which the inkjet recording device of FIG. 6 is equipped. 図７Ａ及び図７Ｂのラインヘッドに備わるインクジェットヘッドの配設状態を概略的に説明するための図である。It is a figure for demonstrating roughly the arrangement | positioning state of the inkjet head with which the line head of FIG. 7A and 7B is equipped. 図８のインクジェットヘッドの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the inkjet head of FIG. 図８のインクジェットヘッドの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the inkjet head of FIG. 図８のＶ－Ｖ線に沿った面を模式的に示す図である。It is a figure which shows typically the surface along the VV line | wire of FIG. 図８のインクジェットヘッドに備わるヘッドチップの概略構成を示す部分断面図である。It is a fragmentary sectional view which shows schematic structure of the head chip with which the inkjet head of FIG. 8 is equipped. インクジェットヘッドの変形例の概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the modification of an inkjet head. インクジェットヘッドの変形例の概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the modification of an inkjet head. 第３実施形態のラインヘッドの全体を示す図である。It is a figure which shows the whole line head of 3rd Embodiment. 第３実施形態のラインヘッドの一部を拡大して示す図である。It is a figure which expands and shows a part of line head of 3rd Embodiment. 第３実施形態のラインヘッドの一部を拡大して示す図である。It is a figure which expands and shows a part of line head of 3rd Embodiment. ラインヘッドの一部の側面図である。It is a side view of a part of a line head. ラインヘッドの一部の上面図である。It is a top view of a part of a line head. インクジェットヘッドの固定部分を説明する図である。It is a figure explaining the fixed part of an inkjet head. インクジェットヘッドの固定部分を説明する図である。It is a figure explaining the fixed part of an inkjet head. インクジェットヘッドの位置調整方法を説明する図である。It is a figure explaining the position adjustment method of an inkjet head. インクジェットヘッドの位置調整方法を説明する図である。It is a figure explaining the position adjustment method of an inkjet head. インクジェットヘッドの位置調整方法を説明する図である。It is a figure explaining the position adjustment method of an inkjet head. 第４実施形態のラインヘッドの一部を拡大して示す図である。It is a figure which expands and shows a part of line head of 4th Embodiment. 第４実施形態のラインヘッドにおけるインクジェットヘッドの位置調整方法を説明する図である。It is a figure explaining the position adjustment method of the inkjet head in the line head of 4th Embodiment. 複数のラインヘッドの配置の例を示す図である。It is a figure which shows the example of arrangement | positioning of a some line head.
　以下、本発明の実施の形態を図面に基づいて説明する。
［第１実施形態］
　図１は、本発明の第１実施形態のインクジェットヘッド１１０の全体構造を示す図である。また、図２は、インクジェットヘッド１１０の各構成を分解して示す図である。
　図１に示すように、このインクジェットヘッド１１０は、６個のインクジェットヘッドエレメント１１１と、これらのインクジェットヘッドエレメント１１１を支持する基準プレート１２０（ヘッド保持部材）と、基準プレート１２０に対して各インクジェットヘッドエレメント１１１を固定するための押さえプレート１５０（ヘッド調整部材）と、各インクジェットヘッドエレメント１１１にインクを供給するための共通インク室となる共通インクバッファー１１３（共通流路部材）とを備える。本実施形態のインクジェットヘッド１１０では、記録媒体の搬送方向に垂直な方向（幅方向）に３個ずつ２列のヘッド列が形成されて、全体として千鳥格子状にインクジェットヘッドエレメント１１１が配列されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a diagram showing an overall structure of an inkjet head 110 according to the first embodiment of the present invention. FIG. 2 is an exploded view showing each configuration of the inkjet head 110.
As shown in FIG. 1, the inkjet head 110 includes six inkjet head elements 111, a reference plate 120 (head holding member) that supports these inkjet head elements 111, and each inkjet head with respect to the reference plate 120. A pressing plate 150 (head adjusting member) for fixing the element 111 and a common ink buffer 113 (common flow path member) serving as a common ink chamber for supplying ink to each inkjet head element 111 are provided. In the ink jet head 110 of this embodiment, two head rows are formed in three in the direction (width direction) perpendicular to the conveyance direction of the recording medium, and the ink jet head elements 111 are arranged in a staggered pattern as a whole. ing.
　インクジェットヘッドエレメント１１１は、従来用いられている積層型のヘッドチップ１１１ａと、共通インクバッファー１１３から供給されたインクを一時的に蓄え、ヘッドチップ１１１ａに送り出すインクリザーバー１１１ｂとを備える。 The inkjet head element 111 includes a conventionally used stacked head chip 111a and an ink reservoir 111b that temporarily stores the ink supplied from the common ink buffer 113 and sends the ink to the head chip 111a.
　インクリザーバー１１１ｂは、ヘッドチップ１１１ａにおけるノズル開口部が設けられた面とは反対側の面に接合されている。インクリザーバー１１１ｂのこの接合面側には、インク流路となる凹部が設けられており、ヘッドチップ１１１ａにおいてこの接合面に設けられたインク供給孔を介し、ヘッドチップ１１１ａの複数のノズルからそれぞれ吐出させるインクが流れるインク流路の各々と連通している。一方、このインクリザーバー１１１ｂにおいて、ヘッドチップ１１１ａとの接合面と反対側には、２本の円筒状に突起した形状のインク流路１１２ａ、１１２ｂが設けられ、共通インクバッファー１１３から供給されるインクが流入する他、インクジェットヘッドエレメント１１１の試験の際には、インク流路１１２ａ、１１２ｂの一方を流入用、他方を排出用にそれぞれ用いることができる。本実施形態のインクジェットヘッド１１０に係るインクリザーバー１１１ｂには、その側面を周回する溝部１１２ｃが設けられている。この溝部１１２ｃの幅は、基準プレート１２０の厚みと対応しており、後に詳述するように、溝部１１２ｃと、基準プレート１２０の切欠部１２１とが嵌合される。 The ink reservoir 111b is bonded to the surface of the head chip 111a opposite to the surface where the nozzle openings are provided. On the joint surface side of the ink reservoir 111b, a recess serving as an ink flow path is provided, and the head chip 111a is ejected from a plurality of nozzles of the head chip 111a through ink supply holes provided on the joint surface. The ink flow path communicates with each of the ink flow paths. On the other hand, in the ink reservoir 111b, two cylindrical ink flow paths 112a and 112b are provided on the side opposite to the joint surface with the head chip 111a, and the ink supplied from the common ink buffer 113 is provided. In addition, when the ink jet head element 111 is tested, one of the ink flow paths 112a and 112b can be used for inflow and the other can be used for discharge. The ink reservoir 111b according to the ink jet head 110 of the present embodiment is provided with a groove portion 112c that goes around the side surface. The width of the groove 112c corresponds to the thickness of the reference plate 120, and the groove 112c and the notch 121 of the reference plate 120 are fitted as will be described in detail later.
　ヘッドチップ１１１ａは、一方の面に複数のノズル開口部（インクノズル）が配列され、これらのノズル開口部からインクが吐出されて記録媒体上に画像を形成する。ノズル開口部の配列パターンや数、間隔などは、適宜定められるが、例えば、千鳥格子状であり、このインクジェットヘッド１１０を用いて画像が形成される記録媒体の搬送方向に直交する方向（幅方向）に所定の解像度（間隔）で隙間が生じないように配列されている。本実施形態のインクジェットヘッド１１０に係るヘッドチップ１１１ａでは、これらのノズル開口部が配列されたノズル基板に、各ノズルからインクを吐出させるための圧力をインクに与える圧力室を形成する各層が積層される。即ち、ノズル基板には、中間基板、圧力室をなす空間が設けられた圧力室層、圧力室の蓋となると同時に圧力室内に圧力を加えるための振動板が順に積層される。更に、形成された圧力室には、電圧が印加されることで変形して振動板を振動させる圧電素子、第一接着層（隔壁層）、圧電素子へ電圧を供給する配線層、及び、絶縁層（保護層）が積層される。絶縁層から圧力室層までの各層には、インクを供給するためのインク流路用孔部、即ち、互いに連通したインレット及び貫通孔が設けられ、インクリザーバー１１１ｂと連通するインク供給孔から各インク流路用孔部を通って圧力室に流入したインクは、振動板の振動に伴い加圧されて各ノズル開口部から吐出される。 The head chip 111a has a plurality of nozzle openings (ink nozzles) arranged on one surface, and ink is ejected from these nozzle openings to form an image on a recording medium. The arrangement pattern, the number, the interval, and the like of the nozzle openings are appropriately determined. For example, the nozzle opening has a staggered pattern, and the direction (width) perpendicular to the conveyance direction of the recording medium on which an image is formed using the inkjet head 110 (Direction) with a predetermined resolution (interval) so that no gap is formed. In the head chip 111a according to the ink jet head 110 of the present embodiment, each layer forming a pressure chamber that applies pressure to the ink to eject ink from each nozzle is laminated on the nozzle substrate in which the nozzle openings are arranged. The That is, on the nozzle substrate, an intermediate substrate, a pressure chamber layer provided with a space forming a pressure chamber, and a diaphragm for applying pressure into the pressure chamber at the same time as a pressure chamber layer are laminated in order. The formed pressure chamber further includes a piezoelectric element that deforms when a voltage is applied to vibrate the diaphragm, a first adhesive layer (partition wall layer), a wiring layer that supplies voltage to the piezoelectric element, and an insulation A layer (protective layer) is laminated. Each layer from the insulating layer to the pressure chamber layer is provided with an ink flow path hole for supplying ink, that is, an inlet and a through hole communicating with each other, and each ink from the ink supply hole communicating with the ink reservoir 111b. The ink that has flowed into the pressure chamber through the flow path hole is pressurized in accordance with the vibration of the diaphragm and is discharged from each nozzle opening.
　基準プレート１２０には、図２に示すように、幅方向に伸びる軸に対して両側に交互に６箇所の切欠部１２１が設けられている。これらの切欠部１２１をなす３辺のうち、隣接する２辺には、平行して空隙部１２２ａ、１２２ｂ（空隙）が設けられている。また、隣り合う切欠部１２１の間となる４箇所には、スリット１２３が設けられている。 As shown in FIG. 2, the reference plate 120 is provided with six notches 121 alternately on both sides with respect to an axis extending in the width direction. Among the three sides forming these cutouts 121, adjacent two sides are provided with gaps 122a and 122b (gap) in parallel. In addition, slits 123 are provided at four locations between adjacent notches 121.
　切欠部１２１には、それぞれ、インクジェットヘッドエレメント１１１が挿し込まれる。このとき、切欠部１２１がインクリザーバー１１１ｂの側面に設けられた溝と嵌合される。これら空隙部１２２ａ、１２２ｂと切欠部１２１との間に残るブリッジ部分１２４ａ、１２４ｂ（変形部）は、切欠部１２１の側から押圧されると弾性的に変形する。このブリッジ部分１２４ａ、１２４ｂの幅は、基準プレート１２０に用いられる材質と、後述するインクジェットヘッドエレメント１１１の位置調整により加えられる力とに基づいて適切に変形可能な幅に形成される。また、ブリッジ部分１２４ａ、１２４ｂの中央部には、切欠部１２１の内側に向けて突起部１２５ａ、１２５ｂが設けられており、突起部１２５ａと、切欠部１２１の反対側の辺との間の距離は、インクジェットヘッドエレメント１１１の溝部１１２ｃにおける幅以下に設定される。 The inkjet head element 111 is inserted into each of the cutout portions 121. At this time, the notch 121 is fitted into a groove provided on the side surface of the ink reservoir 111b. The bridge portions 124 a and 124 b (deformed portions) remaining between the gap portions 122 a and 122 b and the notch portion 121 are elastically deformed when pressed from the notch portion 121 side. The widths of the bridge portions 124a and 124b are formed so as to be appropriately deformable based on the material used for the reference plate 120 and the force applied by adjusting the position of the inkjet head element 111 described later. In addition, protrusions 125 a and 125 b are provided in the center of the bridge portions 124 a and 124 b toward the inside of the notch 121, and the distance between the protrusion 125 a and the opposite side of the notch 121. Is set to be equal to or smaller than the width of the groove 112c of the inkjet head element 111.
　スリット１２３は、インクジェットヘッドエレメント１１１のインク吐出動作に係る駆動信号を送るための配線部材（図示略）を通すためのものである。 The slit 123 is for passing a wiring member (not shown) for sending a drive signal related to the ink ejection operation of the inkjet head element 111.
　押さえプレート１５０は、基準プレート１２０の各列に重ねて設けられ、インクジェットヘッドエレメント１１１をそれぞれ適切な位置に調整して固定するためのものである。押さえプレート１５０は、例えば、種々の金属部材で構成され、基準プレート１２０に、例えば、ネジを用いて固定されている。この押さえプレート１５０には、インクジェットヘッドエレメント１１１及びスリット１２３に対応する位置に長方形の開口部１５１が設けられている。本実施形態のインクジェットヘッド１１０に係る押さえプレート１５０では、開口部１５１のうち基準プレート１２０における切欠部１２１の開放端部分を塞ぐ位置に３箇所のネジ穴１５２が設けられている。ネジ穴１５２の位置は、インクジェットヘッドエレメント１１１の溝部１１２ｃの位置と対応しており、即ち、基準プレート１２０と略同一面内にある。後述するように、これらのネジ穴１５２を貫通してインクジェットヘッドエレメント１１１に接触する３本のネジ１５３（図５Ａ～図５Ｃ参照、押し込み部）の回転量により、インクジェットヘッドエレメント１１１が基準プレートの面内で押し込まれたり（即ち、平行移動したり）、回転したりする。このネジ穴１５２とネジ１５３とにより、調整機構が構成される。 The pressing plate 150 is provided so as to overlap each row of the reference plate 120, and is for adjusting and fixing the inkjet head element 111 at an appropriate position. The holding plate 150 is made of, for example, various metal members, and is fixed to the reference plate 120 using, for example, screws. The presser plate 150 is provided with a rectangular opening 151 at a position corresponding to the inkjet head element 111 and the slit 123. In the pressing plate 150 according to the ink jet head 110 of the present embodiment, three screw holes 152 are provided at positions where the opening 151 closes the open end portion of the notch 121 in the reference plate 120. The position of the screw hole 152 corresponds to the position of the groove 112c of the inkjet head element 111, that is, is substantially in the same plane as the reference plate 120. As will be described later, the inkjet head element 111 is attached to the reference plate by the amount of rotation of three screws 153 (see FIG. 5A to FIG. 5C, which are pushed in) that pass through these screw holes 152 and come into contact with the inkjet head element 111. It is pushed in (i.e. translated) or rotated in the plane. The screw hole 152 and the screw 153 constitute an adjustment mechanism.
　共通インクバッファー１１３は、基準プレート１２０に固定される全てのインクジェットヘッドエレメント１１１のインクリザーバー１１１ｂに対してインクを供給するためのインク室を形成する。共通インクバッファー１１３は、各インクリザーバー１１１ｂに合わせて６つの機室（ブロック）を有し、それぞれの機室がインクリザーバー１１１ｂのインク流路１１２ａ、１１２ｂの開放端を内部に収容するように各種接着剤を用いて接合される。 The common ink buffer 113 forms an ink chamber for supplying ink to the ink reservoirs 111b of all the inkjet head elements 111 fixed to the reference plate 120. The common ink buffer 113 has six machine chambers (blocks) corresponding to each ink reservoir 111b, and each machine chamber has various types such that the open ends of the ink flow paths 112a and 112b of the ink reservoir 111b are accommodated therein. Bonded using an adhesive.
　図３Ａ、図３Ｂは、インクジェットヘッド１１０への共通インクバッファー１１３の接合について説明する図である。
　図３Ａには、共通インクバッファー１１３のインクジェットヘッドエレメント１１１との接合面を示す。共通インクバッファー１１３には、インク流路１１２ａ、１１２ｂを各機室内部にそれぞれ挿入するための開口１１６ａ、１１６ｂが設けられている。図３Ｂは、円筒状のインク流路１１２ａの軸を含む面内で機室及びインクリザーバー１１１ｂを切断した断面を斜視した図である。本実施形態のインクジェットヘッド１１０では、各インクジェットヘッドエレメント１１１の位置が調整された際に、共通インクバッファー１１３の各機室がこの位置調整に対応して隙間を開けずに接続され、インク供給が可能である必要がある。そこで、このインクジェットヘッド１１０では、開口１１６ａ、１１６ｂのサイズをインク流路１１２ａ、１１２ｂのサイズよりも大きくし、インク流路１１２ａ、１１２ｂを取り囲んで隙間全体に弾性部材１１５を埋め込んでいる。この弾性部材１１５をその弾性率に基づきインクジェットヘッドエレメント１１１の位置調整により移動可能な幅に対して適宜な厚さとすることで、インクジェットヘッドエレメント１１１が共通インクバッファー１１３に対して相対的に移動しても両者の間に隙間を生じさせない構成となっている。弾性部材１１５としては、インクに対する耐性を有する種々の周知の材質、例えば、シリコン系ゴムやフッ素系ゴムを用いることが出来る。 3A and 3B are diagrams for explaining the bonding of the common ink buffer 113 to the inkjet head 110. FIG.
FIG. 3A shows a joint surface of the common ink buffer 113 with the inkjet head element 111. The common ink buffer 113 is provided with openings 116a and 116b for inserting the ink flow paths 112a and 112b into the interiors of the respective machines. FIG. 3B is a perspective view of a cross section obtained by cutting the machine chamber and the ink reservoir 111b within a plane including the axis of the cylindrical ink flow path 112a. In the inkjet head 110 of the present embodiment, when the position of each inkjet head element 111 is adjusted, each machine chamber of the common ink buffer 113 is connected without opening a gap corresponding to this position adjustment, and ink supply is performed. It needs to be possible. Therefore, in the inkjet head 110, the size of the openings 116a and 116b is made larger than the size of the ink flow paths 112a and 112b, and the elastic member 115 is embedded in the entire gap surrounding the ink flow paths 112a and 112b. By setting the elastic member 115 to an appropriate thickness with respect to the movable width by adjusting the position of the inkjet head element 111 based on the elastic modulus, the inkjet head element 111 moves relative to the common ink buffer 113. Even so, there is no gap between them. As the elastic member 115, various known materials having resistance to ink, for example, silicon rubber and fluorine rubber can be used.
　共通インクバッファー１１３の両端には、外部との間で貫通し、インクの流入、排出が行われる供給パイプ１１４ａ、１１４ｂが設けられている。このインクジェットヘッド１１０に係る外部から図示略の供給用コネクターを介して供給パイプ１１４ａから流入されたインクは、各機室を順番に流れて全てのインクリザーバー１１１ｂにインクを供給する。 Provided at both ends of the common ink buffer 113 are supply pipes 114a and 114b penetrating between the outside and the ink flowing in and out. Ink flowing from the supply pipe 114a from the outside via the supply connector (not shown) from the outside of the ink jet head 110 flows in each machine chamber in order and supplies the ink to all the ink reservoirs 111b.
　次に、本発明のインクジェットヘッド１１０の組立及び位置の調整について説明する。
　図４Ａ及び図４Ｂは、本実施形態のインクジェットヘッド１１０の組立手順を説明するための図である。 Next, assembly and position adjustment of the inkjet head 110 of the present invention will be described.
4A and 4B are views for explaining an assembly procedure of the inkjet head 110 according to the present embodiment.
　先ず、図４Ａに示すように、基準プレート１２０に対し、切欠部１２１の開放端側から基準プレート１２０とインクリザーバー１１１ｂの側面の溝とを嵌合させながら導入して嵌め込む（工程１）。次いで、図４Ｂに示すように、押さえプレート１５０の開口部１５１にインクジェットヘッドエレメント１１１を通し、押さえプレート１５０を基準プレート１２０の一面（ここでは、ヘッドチップ１１１ａがある側とは反対側の面）に固定する（工程２）。それから、共通インクバッファー１１３を各インクリザーバー１１１ｂと接合させる（工程３）。最後に、押さえプレート１５０の前面のネジ穴１５２にそれぞれネジ１５３（図５Ａ参照）を嵌めこみ、カメラなどを用いて予めマーキングされたインクジェットヘッドエレメント１１１の設定位置と一致するようにネジ１５３の回転量を調整する（工程４）。
　なお、インクジェットヘッドエレメント１１１と配線部材との接続は、上述の工程の途中で行うことも可能であるが、工程１の前に予め接続しておくことが可能である。この場合には、押さえプレート１５０を設ける際に、インクジェットヘッドエレメント１１１と共に配線部材が開口部１５１から引き出される。 First, as shown in FIG. 4A, the reference plate 120 is introduced and fitted into the reference plate 120 while fitting the reference plate 120 and the groove on the side surface of the ink reservoir 111b from the open end side of the notch 121 (step 1). Next, as shown in FIG. 4B, the inkjet head element 111 is passed through the opening 151 of the pressing plate 150, and the pressing plate 150 is placed on one surface of the reference plate 120 (here, the surface opposite to the side where the head chip 111a is present). (Step 2). Then, the common ink buffer 113 is joined to each ink reservoir 111b (step 3). Finally, screws 153 (see FIG. 5A) are respectively fitted into the screw holes 152 on the front surface of the holding plate 150, and the screws 153 are rotated so as to coincide with the setting positions of the inkjet head element 111 that has been marked in advance using a camera or the like. The amount is adjusted (step 4).
The ink jet head element 111 and the wiring member can be connected in the middle of the above process, but can be connected in advance before the process 1. In this case, when the pressing plate 150 is provided, the wiring member is pulled out from the opening 151 together with the inkjet head element 111.
　図５Ａ～図５Ｃは、ネジ１５３を用いたインクジェットヘッドエレメント１１１の位置調整を説明する図である。この図では、インクジェットヘッドエレメント１１１についてのみ、溝部１１２ｃの位置で切断した断面形状を示している。 FIGS. 5A to 5C are views for explaining the position adjustment of the inkjet head element 111 using the screws 153. FIG. In this figure, only the inkjet head element 111 is shown in a cross-sectional shape cut at the position of the groove 112c.
　先ず、図５Ａに示すように、ネジ穴１５２から３本のネジ１５３が均等且つ浅くねじ込まれて溝部１１２ｃと接触すると、インクジェットヘッドエレメント１１１は、ネジ１５３の先端と突起部１２５ｂとの間の位置に固定される。次に、図５Ｂに示すように３本のネジ１５３を均等に更にねじ込んでいくと、ねじ込んだ量（調整の量）に応じてブリッジ部分１２４ｂを撓ませながら（変形させながら）、インクジェットヘッドエレメント１１１は、基準プレート１２０の軸寄りに平行移動する。なお、このとき、ブリッジ部分１２４ｂの撓みによる反発力は、３本のネジ１５３に均等にかからないので、両端のネジ１５３の回転量が等しければ、中央のネジ１５３の回転量は、両端のネジ１５３の回転量と異なっても良い。 First, as shown in FIG. 5A, when the three screws 153 are screwed evenly and shallowly through the screw holes 152 and come into contact with the groove 112c, the inkjet head element 111 is positioned between the tip of the screw 153 and the protrusion 125b. Fixed to. Next, as shown in FIG. 5B, when the three screws 153 are further screwed evenly, the bridge portion 124b is bent (deformed) according to the screwed amount (adjustment amount), and the inkjet head element. 111 moves parallel to the axis of the reference plate 120. At this time, since the repulsive force due to the bending of the bridge portion 124b is not evenly applied to the three screws 153, if the rotation amounts of the screws 153 at both ends are equal, the rotation amount of the central screw 153 is the same as the screws 153 at both ends. The amount of rotation may be different.
　一方、図５Ｃに示すように、両端のネジ１５３を異なる分量ずつねじ込むと、インクジェットヘッドエレメント１１１の両端が不均等に押し込まれ、その結果、インクジェットヘッドエレメント１１１は、突起部１２５ａ、１２５ｂ及びその他のインクジェットヘッドエレメント１１１と切欠部１２１との接触点を支点として回転する。 On the other hand, as shown in FIG. 5C, when the screws 153 at both ends are screwed in different amounts, both ends of the ink jet head element 111 are pushed unevenly. As a result, the ink jet head element 111 has the protrusions 125a, 125b and other parts. The ink jet head element 111 rotates with a contact point between the cutout 121 and the contact point.
　以上のように、第１実施形態のインクジェットヘッド１１０は、複数のノズル開口部が配列されたインクジェットヘッドエレメント１１１が複数配列されており、インクジェットヘッドエレメント１１１は、基準プレート１２０に嵌合され、インクジェットヘッドエレメント１１１の位置や姿勢を調整する際には、ブリッジ部分１２４ａ、１２４ｂが変形して位置を定めることが出来る。即ち、インクジェットヘッドエレメント１１１を基準プレート１２０に嵌合させた後に、精密に相対位置を調整することができるので、高精度でインクジェットヘッドエレメント１１１を配列することが出来る。 As described above, in the inkjet head 110 according to the first embodiment, a plurality of inkjet head elements 111 in which a plurality of nozzle openings are arranged are arranged, and the inkjet head element 111 is fitted to the reference plate 120 to be inkjet. When adjusting the position and posture of the head element 111, the bridge portions 124a and 124b can be deformed to determine the position. That is, since the relative position can be precisely adjusted after the ink jet head element 111 is fitted to the reference plate 120, the ink jet head elements 111 can be arranged with high accuracy.
　また、インクジェットヘッドエレメント１１１を保持する基準プレート１２０のインクジェットヘッドエレメント１１１との接触部分自体が変形するので、位置調整をするための余分なスペースが生じてインクジェットヘッド１１０のサイズが大型化するのを抑えることが出来る。 In addition, since the contact portion itself of the reference plate 120 that holds the inkjet head element 111 with the inkjet head element 111 is deformed, an extra space for adjusting the position is generated and the size of the inkjet head 110 is increased. It can be suppressed.
　また、インクジェットヘッドエレメント１１１の側面からネジ穴１５２を貫通するネジ１５３により側面からインクジェットヘッドエレメント１１１の位置や姿勢を調整するので、直接的、容易、且つ、確実にインクジェットヘッドエレメント１１１の位置や姿勢の調整を行うことが出来る。 In addition, since the position and posture of the inkjet head element 111 are adjusted from the side surface by the screw 153 passing through the screw hole 152 from the side surface of the inkjet head element 111, the position and posture of the inkjet head element 111 are directly, easily and reliably. Can be adjusted.
　また、このネジ穴１５２及びネジ１５３は、基準プレート１２０上に固定された押さえプレート１５０に設けられるので、基準プレート１２０と押さえプレート１５０との組み合わせにより、適切な位置にネジ穴１５２及びネジ１５３を配置して容易にインクジェットヘッドエレメント１１１の位置や姿勢の調整を行うことが出来る。 Further, since the screw hole 152 and the screw 153 are provided on the holding plate 150 fixed on the reference plate 120, the screw hole 152 and the screw 153 are placed at appropriate positions by combining the reference plate 120 and the holding plate 150. The position and posture of the ink jet head element 111 can be easily adjusted by arranging them.
　また、基準プレート１２０には、インクジェットヘッドエレメント１１１を嵌合させるための切欠部１２１が設けられており、基準プレート１２０の面内でインクジェットヘッドエレメント１１１を嵌合位置まで導入することが出来るので、インクジェットヘッドエレメント１１１の組立を容易且つ確実に行うことが出来る。 Further, the reference plate 120 is provided with a notch 121 for fitting the ink jet head element 111, and the ink jet head element 111 can be introduced to the fitting position in the plane of the reference plate 120. The inkjet head element 111 can be easily and reliably assembled.
　また、押さえプレート１５０は、基準プレート１２０にインクジェットヘッドエレメント１１１が嵌合された後、当該インクジェットヘッドエレメント１１１を開口部１５１に通す形で基準プレート１２０に積層されるので、容易且つ確実に基準プレート１２０の切欠部１２１の開放端部分を封鎖してインクジェットヘッドエレメント１１１を押さえることが出来る。 Further, since the press plate 150 is laminated on the reference plate 120 so that the ink jet head element 111 is passed through the opening 151 after the ink jet head element 111 is fitted to the reference plate 120, the reference plate can be easily and surely provided. The ink jet head element 111 can be pressed by sealing the open end portion of the 120 notch 121.
　また、ネジ１５３によりインクジェットヘッドエレメント１１１を押し込むことで、インクジェットヘッドエレメント１１１に対し、ネジ１５３の反対側に設けられたブリッジ部分１２４ａ、１２４ｂを押し込んで変形させるので、容易な構成で位置調整を行うことが出来る。 Further, by pushing the ink jet head element 111 with the screw 153, the bridge portions 124a and 124b provided on the opposite side of the screw 153 are pushed into the ink jet head element 111 and deformed, so that the position adjustment is performed with an easy configuration. I can do it.
　また、インクジェットヘッドエレメント１１１の位置や姿勢の調整の際に変形されるブリッジ部分１２４ａ、１２４ｂに並列に空隙部１２２ａ、１２２ｂが設けられているので、ブリッジ部分１２４ａ、１２４ｂの変形が基準プレート１２０の他の部分に対して影響することをより抑えることが出来る。 Further, since the gap portions 122a and 122b are provided in parallel to the bridge portions 124a and 124b that are deformed when the position and posture of the inkjet head element 111 are adjusted, the deformation of the bridge portions 124a and 124b is caused by the deformation of the reference plate 120. The influence on other parts can be further suppressed.
　また、インクジェットヘッドエレメント１１１を２列に配列することで、幅方向にインクノズルを隙間無く配列しやすい構成とすることができる。また、この場合に、隣接する他のインクジェットヘッドエレメント１１１との間以外の位置に設けられたネジ穴１５２からネジ１５３をねじ込むことが出来るので、ネジ１５３の回転動作が容易となり、インクジェットヘッドエレメント１１１の位置調整を容易に行うことが出来る。 Further, by arranging the inkjet head elements 111 in two rows, it is possible to easily arrange the ink nozzles in the width direction without gaps. Further, in this case, since the screw 153 can be screwed from the screw hole 152 provided at a position other than between the adjacent ink jet head elements 111, the screw 153 can be easily rotated, and the ink jet head element 111. Can be easily adjusted.
　また、ヘッド列を平行な２列とし、特に、千鳥格子状に配列させることで、隙間のないノズル配列と、容易なインクジェットヘッドエレメント１１１の位置調整に係るネジ穴１５２の配置とを両立させることが出来、高解像度と高精度のノズル配列を容易に両立することができる。 Further, by arranging the head rows in two parallel rows, and in particular, arranging them in a staggered pattern, it is possible to achieve both the nozzle arrangement without gaps and the arrangement of the screw holes 152 for easy position adjustment of the inkjet head element 111. Therefore, it is possible to easily achieve both high resolution and high accuracy nozzle arrangement.
　また、インクジェットヘッドエレメント１１１に含まれるインクリザーバー１１１ｂのようにインクジェットヘッドエレメント１１１の各構成の中で相対的にサイズ（厚さ）が大きく且つ剛性の高いものに溝部１１２ｃを設け、基準プレート１２０と嵌合させることで、より容易且つ確実にインクジェットヘッドエレメント１１１の位置や姿勢の調整を行うことが出来る。 In addition, a groove portion 112c is provided in a relatively large size (thickness) among the components of the inkjet head element 111, such as the ink reservoir 111b included in the inkjet head element 111, and the reference plate 120 and By fitting, the position and posture of the inkjet head element 111 can be adjusted more easily and reliably.
　また、共通インクバッファー１１３に対してインクジェットヘッドエレメント１１１が接合された後に各インクジェットヘッドエレメント１１１の位置や姿勢の調整を行うことが出来る構成であるので、インク流路の構成に余剰な場所を必要としない。 In addition, since the position and posture of each ink jet head element 111 can be adjusted after the ink jet head element 111 is joined to the common ink buffer 113, an extra space is required for the ink flow path structure. And not.
　また、共通インクバッファー１１３とインクリザーバー１１１ｂとの接合部分では、インクリザーバー１１１ｂに突起状のインク流路１１２ａ、１１２ｂを設け、これらの周囲を弾性部材１１５で覆うことにより、各インクリザーバー１１１ｂが共通インクバッファー１１３に対して相対的に位置や姿勢が変化されてもインク漏れや切断などを起こすことなく容易且つ確実にインクを各ノズルに供給することが出来る。 In addition, at the joint portion between the common ink buffer 113 and the ink reservoir 111b, the ink reservoir 111b is provided with protruding ink flow paths 112a and 112b, and these ink reservoirs 111b are shared by the elastic member 115 surrounding them. Even if the position and orientation of the ink buffer 113 are changed, ink can be easily and reliably supplied to each nozzle without causing ink leakage or cutting.
　なお、本発明は、上記第１実施形態に限られるものではなく、様々な変更が可能である。
　例えば、上記実施の形態では、基準プレート１２０と嵌合されたインクジェットヘッドエレメント１１１を押さえプレート１５０のネジ穴１５２に挿入されたネジ１５３により位置及び姿勢の調整を行い、固定する場合について説明したが、基準プレート１２０が嵌合に係る構成と、位置及び姿勢の調整に係る機構とを併せ持つこととしても良い。 The present invention is not limited to the first embodiment, and various modifications can be made.
For example, in the above embodiment, the case where the inkjet head element 111 fitted to the reference plate 120 is fixed by adjusting the position and posture with the screw 153 inserted into the screw hole 152 of the holding plate 150 has been described. The reference plate 120 may have both a configuration related to fitting and a mechanism related to position and orientation adjustment.
　また、上記実施の形態では、切欠部１２１の開放端側を除く３辺で基準プレート１２０とインクジェットヘッドエレメント１１１とが嵌合されたが、例えば、平行な２辺のみを嵌合させる形態のように、基準プレート１２０に対して上下方向の移動を抑えることが可能であればこれに限られない。更に、例えば、押さえプレート１５０と共に上下方向の移動を抑えることで、嵌合箇所を一箇所とすることも可能である。 In the above embodiment, the reference plate 120 and the inkjet head element 111 are fitted on the three sides excluding the open end side of the notch 121. For example, only two parallel sides are fitted. In addition, the present invention is not limited to this as long as the movement in the vertical direction relative to the reference plate 120 can be suppressed. Furthermore, for example, by suppressing the movement in the vertical direction together with the pressing plate 150, it is possible to make the fitting place one place.
　また、上記実施の形態では、空隙部１２２ａ、１２２ｂを伴うブリッジ部分１２４ａ、１２４ｂを屈曲変形させることでインクジェットヘッドエレメント１１１の位置や姿勢を調整可能としたが、インクジェットヘッドエレメント１１１の位置や姿勢を調整するための変形部分は、これに限られない。例えば、基準プレート１２０において、インクジェットヘッドエレメント１１１との接触面に弾性変形や塑性変形する部材を用いる構造とすることが出来る。また、突起部１２５ａ、１２５ｂに限らず、ブリッジ部分１２４ａ、１２４ｂが設けられていない他の嵌合部分にも別途突起を設けることで、インクジェットヘッドエレメント１１１をより容易に回転調整可能とすることが出来る。 In the above embodiment, the position and posture of the inkjet head element 111 can be adjusted by bending and deforming the bridge portions 124a and 124b with the gap portions 122a and 122b. However, the position and posture of the inkjet head element 111 can be adjusted. The deformation part for adjustment is not limited to this. For example, the reference plate 120 may have a structure in which a member that is elastically or plastically deformed is used for the contact surface with the inkjet head element 111. In addition, the inkjet head element 111 can be more easily rotationally adjusted by providing separate protrusions not only on the protrusions 125a and 125b but also on other fitting portions where the bridge portions 124a and 124b are not provided. I can do it.
　また、上記実施の形態では、インクジェットヘッドエレメント１１１のうち、インクリザーバー１１１ｂの側面に溝を設けることとしたが、他の部材に設けられても良い。例えば、ヒーター用の部材や基板などに設けられても良い。また、この場合の溝は、凹部を設けたものの他、平行な二列の突起部を設けることによって形成されるものであっても良い。或いは、反対に、インクジェットヘッドエレメント１１１に設けられた一本の凸部が基準プレート１２０に設けられた凹部と嵌合される形態であっても良い。 In the above embodiment, the groove is provided on the side surface of the ink reservoir 111b in the inkjet head element 111, but it may be provided on another member. For example, it may be provided on a heater member or a substrate. Moreover, the groove | channel in this case may be formed by providing a parallel 2 row | line | column projection part other than what provided the recessed part. Alternatively, on the contrary, a form in which one convex portion provided in the inkjet head element 111 is fitted to a concave portion provided in the reference plate 120 may be employed.
　また、上記実施の形態では、ヘッドチップ１１１ａのノズル開口面と平行に基準プレート１２０を配置するインクジェットヘッドを例に挙げて説明したが、これに限られない。インクジェットヘッドエレメント１１１には、他の構成に係るインクジェットヘッドチップが用いられてもよいし、複数のインクジェットヘッドエレメント１１１が一列に配列されたインクジェットヘッドなどでは、インクの射出方向も基準プレート１２０の面に垂直である場合に限られない。また、インクジェットヘッドエレメント１１１は、圧電素子を用いてインクを加圧して吐出させる方式のものに限らず、加熱により加圧する方式のものであっても良い。 In the above embodiment, the inkjet head in which the reference plate 120 is disposed in parallel with the nozzle opening surface of the head chip 111a has been described as an example. However, the present invention is not limited to this. As the inkjet head element 111, an inkjet head chip according to another configuration may be used. In an inkjet head or the like in which a plurality of inkjet head elements 111 are arranged in a row, the ink ejection direction is also the surface of the reference plate 120. It is not limited to when it is perpendicular to. In addition, the inkjet head element 111 is not limited to a system that pressurizes and discharges ink using a piezoelectric element, but may be a system that pressurizes by heating.
　また、上記実施の形態では、基準プレート１２０上に開口部１５１を備えた板状の押さえプレート１５０を重ねて設ける構成としたが、押さえプレート１５０の形状はこれに限られない。基準プレート１２０に固定され、ネジ穴１５２に係るインクジェットヘッドエレメント１１１の調整機構を有していれば、板状ではなく、角柱形状などであっても良く、また、この場合には、開口部１５１を設けるまでもなく、インクジェットヘッドエレメント１１１の周囲を囲わない形状とすることが出来る。更に、この押さえプレート１５０は、基準プレート１２０に積層される場合に限らず、横から取り付ける形状や、基準プレート１２０を上下から挟む形状とすることも可能である。 In the above embodiment, the plate-like pressing plate 150 provided with the opening 151 is provided on the reference plate 120 in an overlapping manner, but the shape of the pressing plate 150 is not limited to this. As long as it has an adjustment mechanism for the inkjet head element 111 related to the screw hole 152 and is fixed to the reference plate 120, it may have a prismatic shape instead of a plate shape. In this case, the opening 151 Needless to say, a shape that does not surround the inkjet head element 111 can be obtained. Further, the pressing plate 150 is not limited to being stacked on the reference plate 120, but may be a shape attached from the side or a shape sandwiching the reference plate 120 from above and below.
　また、ネジ穴１５２に挿入されてインクジェットヘッドエレメント１１１の位置及び姿勢を調整するネジ１５３には、先端に各々、又は、共通の緩衝部材等が設けられていても良い。 Further, each of the screws 153 that are inserted into the screw holes 152 and adjust the position and orientation of the inkjet head element 111 may be provided with a common buffer member or the like at the tip.
　また、上記実施の形態では、基準プレート１２０に６個のインクジェットヘッドエレメント１１１が２列に３個ずつ配列されて嵌合される場合を例として挙げて説明したが、これに限られず、例えば、単純に複数個のインクジェットヘッドエレメント１１１が一列に配列される場合にも本発明を適用することが出来る。 In the above embodiment, the case where the six inkjet head elements 111 are arranged and fitted in two rows on the reference plate 120 is described as an example. However, the present invention is not limited to this. The present invention can also be applied to a case where a plurality of inkjet head elements 111 are simply arranged in a line.
　また、上記実施の形態では、平行に配列されたヘッド列の配列方向に垂直に外側から中心線への向き（本実施形態では、記録媒体の搬送方向）に向けてネジ１５３を配置したが、この配置に限られない。ネジ１５３を幅方向に向けて配置しても良いし、両方向の配置に係る調整機構を併用しても良い。但し、各ヘッド列において真ん中のインクジェットヘッドエレメント１１１のように、幅方向両側に他のインクジェットヘッドエレメント１１１が設けられている場合には、当該隣接するインクジェットヘッドエレメント１１１が設けられている側からネジ１５３の回転量を調整しづらいので、調整機構は、隣接するインクジェットヘッドエレメント１１１の間には設けられない構造とすることが出来る。 In the above-described embodiment, the screw 153 is arranged in the direction from the outside to the center line (in the present embodiment, the recording medium conveyance direction) perpendicular to the arrangement direction of the head rows arranged in parallel. It is not restricted to this arrangement. The screw 153 may be arranged in the width direction, or an adjustment mechanism related to the arrangement in both directions may be used in combination. However, in the case where other inkjet head elements 111 are provided on both sides in the width direction as in the middle inkjet head element 111 in each head row, a screw is provided from the side where the adjacent inkjet head element 111 is provided. Since it is difficult to adjust the rotation amount of 153, the adjustment mechanism can be configured not to be provided between the adjacent inkjet head elements 111.
　また、上記実施の形態では、共通インクバッファー１１３が固定され、各インクジェットヘッドエレメント１１１の位置及び姿勢の調整による各機室とのずれを弾性部材１１５によって補う構成としたが、これに限られない。例えば、共通インクバッファー１１３において各機室を連通する部分を肉薄に形成し、各インクジェットヘッドエレメント１１１の微小移動や回転に伴って当該部分が折れ曲がったり延びたりすることが可能としてもよい。 In the above embodiment, the common ink buffer 113 is fixed, and the elastic member 115 compensates for the deviation from each machine room due to the adjustment of the position and posture of each inkjet head element 111. However, the present invention is not limited to this. . For example, a portion of the common ink buffer 113 that communicates with each machine chamber may be formed thin, and the portion may be bent or extended as the inkjet head elements 111 are finely moved or rotated.
　また、上記実施の形態では、インク流路１１２ａ、１１２ｂを突起した円筒形状としたが、角型など他の形状の突起でもよく、或いは、突起形状ではない単なる孔部であっても良い。 In the above embodiment, the ink flow paths 112a and 112b are formed in a cylindrical shape, but may be a protrusion having another shape such as a square shape, or may be a simple hole that is not a protrusion.
　また、上記実施の形態では、共通インクバッファー１１３を、各インクジェットヘッドエレメント１１１に対応した機室を有する形状としたが、これに限られない。各インクジェットヘッドエレメント１１１のインク流路１１２ａ、１１２ｂの位置変化にそれぞれ対応可能な一の大きなインクバッファーを設けることとしても良い。 In the above embodiment, the common ink buffer 113 has a shape corresponding to each inkjet head element 111. However, the present invention is not limited to this. One large ink buffer that can respectively correspond to the position change of the ink flow paths 112a and 112b of each inkjet head element 111 may be provided.
　また、共通インクバッファー１１３を用いず、個別のインクバッファーをチューブなどの配管で接続する形態であっても良い。 In addition, the common ink buffer 113 may not be used, and individual ink buffers may be connected by piping such as a tube.
［第２実施形態］
　次に、本発明の第２実施形態について図面を参照して説明する。
　図６は、本発明を適用した第２実施形態のインクジェット記録装置２００の概略構成を示す斜視図である。 [Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 6 is a perspective view showing a schematic configuration of an inkjet recording apparatus 200 according to the second embodiment to which the present invention is applied.
　図６に示すように、インクジェット記録装置２００は、記録媒体Ｍを支持するプラテン２０１と、このプラテン２０１の前後に設けられ、記録媒体Ｍを搬送するための搬送ローラー２０２と、プラテン２０１の上方に設けられた所定数（例えば、４つ）のラインヘッド２０３、２０４、２０５、２０６とを備えている。
　以下の説明では、記録媒体Ｍの搬送方向を前後方向（若しくは、Ｙ方向）とし、当該前後方向に直交する一の方向を左右方向（若しくは、Ｘ方向）とし、前後方向及び左右方向に直交する方向を上下方向とする。 As shown in FIG. 6, the ink jet recording apparatus 200 includes a platen 201 that supports the recording medium M, a conveyance roller 202 that is provided before and after the platen 201, and conveys the recording medium M, and above the platen 201. A predetermined number (for example, four) of line heads 203, 204, 205, and 206 are provided.
In the following description, the conveyance direction of the recording medium M is the front-rear direction (or Y direction), one direction orthogonal to the front-rear direction is the left-right direction (or X direction), and is orthogonal to the front-rear direction and the left-right direction. The direction is the vertical direction.
　ラインヘッド２０３、２０４、２０５、２０６は、それぞれ左右方向に延在する長尺な形状をなしている。また、ラインヘッド２０３、２０４、２０５、２０６は、搬送方向の上流側から下流側に所定間隔を空けて配設されている。
　そして、インクジェット記録装置２００は、プラテン２０１に支持された状態の記録媒体Ｍを搬送ローラー２０２の駆動により搬送方向に搬送し、このとき、ラインヘッド２０３、２０４、２０５、２０６からＹ，Ｍ，Ｃ，Ｋの各プロセスカラーのインクを記録媒体Ｍに向けて吐出するようになっている。
　なお、各ラインヘッド２０３、２０４、２０５、２０６は、吐出するインクの色が異なる以外の点で略同様の構成をなし、これらのうちのラインヘッド２０３を代表として詳細に説明する。 Each of the line heads 203, 204, 205, and 206 has a long shape extending in the left-right direction. Further, the line heads 203, 204, 205, 206 are arranged at a predetermined interval from the upstream side to the downstream side in the transport direction.
The ink jet recording apparatus 200 transports the recording medium M supported by the platen 201 in the transport direction by driving the transport roller 202. At this time, the line heads 203, 204, 205, and 206 transfer Y, M, and C. , K process color inks are ejected toward the recording medium M.
Each of the line heads 203, 204, 205, and 206 has substantially the same configuration except that the color of the ejected ink is different, and the line head 203 will be described in detail as a representative.
　図７Ａは、ラインヘッド２０３の概略構成を示す斜視図であり、図７Ｂは、図７Ａの破線Ｂで囲まれた部分を拡大して示す斜視図である。また、図８は、インクジェットヘッド２１０の配設状態を概略的に説明するためにラインヘッド２０３を下側から見て示した図である。 FIG. 7A is a perspective view showing a schematic configuration of the line head 203, and FIG. 7B is an enlarged perspective view showing a portion surrounded by a broken line B in FIG. 7A. FIG. 8 is a diagram showing the line head 203 as viewed from below in order to schematically explain the arrangement state of the inkjet head 210.
　図７Ａ及び図８に示すように、ラインヘッド２０３は、左右方向に沿って配設された所定数（例えば、３つ）のインクジェットヘッド２１０と、これらのインクジェットヘッド２１０を支持するフレーム部（支持体）２２０とを備えている。 As shown in FIGS. 7A and 8, the line head 203 includes a predetermined number (for example, three) of inkjet heads 210 arranged in the left-right direction, and a frame portion (support) that supports these inkjet heads 210. Body) 220.
　フレーム部２２０は、左右方向に長尺な部材であり、下向きに開口した箱型に形成されている。また、フレーム部２２０の前面部２２１及び後面部２２２の所定位置には、インクジェットヘッド２１０の筐体２３０の前面側及び後面側の突起部ａ１、ｂ１（後述）と係合する溝部２２３が所定数（例えば、各面部に６つずつ）形成されている（図７Ａ等参照）。 The frame portion 220 is a member that is long in the left-right direction, and is formed in a box shape that opens downward. In addition, a predetermined number of grooves 223 that engage with protrusions a1 and b1 (described later) on the front side and the rear side of the housing 230 of the inkjet head 210 are provided at predetermined positions on the front part 221 and the rear part 222 of the frame part 220. (For example, six on each surface portion) (see FIG. 7A and the like).
　溝部２２３は、前面側の突起部ａ１どうし及び後面側の突起部ｂ１どうしの間隔に対応させて所定間隔を空けて複数形成されている。
　また、各溝部２２３は、前面部２２１及び後面部２２２の各々の下端から切り欠かれてなり、前後方向に見て略直角に屈曲した形状をなしている。また、各溝部２２３の最奥部が下側に凸の円弧状に湾曲してなり、当該円弧状の部分に円柱状の突起部ａ１、ｂ１が載置されるようになっている。
　なお、図７Ａ等にあっては、前面部２２１に設けられた溝部２２３のみを図示している。また、溝部２２３の形状は、一例であってこれに限られるものではなく、適宜任意に変更可能である。さらに、溝部２２３の最奥部の形状も突起部ａ１、ｂ１の外形上に対応させて適宜任意に変更可能である。 A plurality of the groove portions 223 are formed at a predetermined interval corresponding to the interval between the projections a1 on the front surface side and the projections b1 on the rear surface side.
Each groove portion 223 is cut out from the lower end of each of the front surface portion 221 and the rear surface portion 222, and has a shape bent substantially at a right angle when viewed in the front-rear direction. Further, the innermost portion of each groove 223 is curved in a downwardly convex arc shape, and cylindrical projections a1 and b1 are placed on the arc-shaped portion.
7A and the like, only the groove portion 223 provided in the front surface portion 221 is illustrated. Moreover, the shape of the groove part 223 is an example, and is not limited thereto, and can be arbitrarily changed as appropriate. Furthermore, the shape of the innermost part of the groove part 223 can also be arbitrarily changed arbitrarily corresponding to the outer shape of the projection parts a1 and b1.
　また、フレーム部２２０の上面部２２４には、各インクジェットヘッド２１０に対応させて開口部２２４ａがそれぞれ形成され、この開口部２２４ａにインクジェットヘッド２１０を構成する供給用コネクター２１５、排出用コネクター２１６及び電装コネクター２１９（後述）等が挿通されている。 In addition, an opening 224a is formed on the upper surface 224 of the frame portion 220 so as to correspond to each ink jet head 210, and the supply connector 215, the discharge connector 216, and the electrical components that constitute the ink jet head 210 are formed in the opening 224a. A connector 219 (described later) or the like is inserted.
　以下に、インクジェットヘッド２１０について詳細に説明する。
　図９Ａ及び図９Ｂは、インクジェットヘッド２１０の概略構成を示す斜視図である。また、図１０は、図８のＶ－Ｖ線に沿った面を透過して模式的に示す図である。 Hereinafter, the inkjet head 210 will be described in detail.
9A and 9B are perspective views showing a schematic configuration of the inkjet head 210. FIG. FIG. 10 is a diagram schematically showing the surface along the line VV in FIG.
　図９Ａ及び図９Ｂ並びに図１０に示すように、インクジェットヘッド２１０は、所定数（例えば、６つ）のヘッドチップ２１１を保持する保持板２１２と、各ヘッドチップ２１１にインクを供給するために共通化されたインク室２１３と、このインク室２１３と供給パイプ２１４を介して連通された供給用コネクター２１５及び排出用コネクター２１６と、ヘッドチップ２１１の圧電素子２１１４ｂ（後述）の駆動を制御するためのＩＣ基板２１７と、このＩＣ基板２１７と中継基板２１８ａ及びコネクター基板２１８ｂを介して接続されるとともに記録装置本体側の制御基板（図示略）と接続される電装コネクター２１９と、これらのヘッド構成部品が内側に配置された筐体２３０とを備えている。 As shown in FIGS. 9A and 9B and FIG. 10, the inkjet head 210 is common to a holding plate 212 that holds a predetermined number (for example, six) of head chips 211 and to supply ink to each head chip 211. For controlling the drive of the formed ink chamber 213, the supply connector 215 and the discharge connector 216 communicated with the ink chamber 213 via the supply pipe 214, and the piezoelectric element 2114 b (described later) of the head chip 211. An IC board 217, an electrical connector 219 connected to the IC board 217, the relay board 218a and the connector board 218b, and a control board (not shown) on the recording apparatus main body side, and these head components And a housing 230 disposed inside.
　供給用コネクター２１５、ＩＣ基板２１７及び電装コネクター２１９は、後述するように、保持板２１２の前側及び後側の各々にそれぞれ配設された３つのヘッドチップ２１１、…に対応させるように２つずつ設けられている。 The supply connector 215, the IC substrate 217, and the electrical connector 219 are provided two by two so as to correspond to the three head chips 211, respectively arranged on the front side and the rear side of the holding plate 212, as will be described later. Is provided.
　保持板２１２は、筐体２３０の下端部２３０ａに取り付け固定されている。
　また、保持板２１２には、所定数（例えば、６つ）の略等しい形状及び寸法のノズル基板２１１１を具備するヘッドチップ２１１、…が左右方向に沿って千鳥状に配設されている。即ち、保持板２１２の前側及び後側の各々には、ヘッドチップ２１１が３つずつ所定の等しい間隔を空けて配設され、前側の３つのヘッドチップ２１１、…と後側の３つのヘッドチップ２１１、…とは、一のヘッドチップ２１１の左右方向の幅の分だけ左右方向にずれて配置されている。
　また、保持板２１２は、所定数（例えば、６つ）のヘッドチップ２１１、…の配置に対応させて段付き形状に形成されている。具体的には、保持板２１２の前側の３つのヘッドチップ２１１、…のうちの右端のヘッドチップ２１１よりも右側の部分、即ち、保持板２１２の後側の３つのヘッドチップ２１１、…のうちの右端のヘッドチップ２１１の前側部分が、平面視にて略直角に切り欠かれている。同様に、保持板２１２の前側の３つのヘッドチップ２１１、…のうちの左端のヘッドチップ２１１の後側部分、即ち、保持板２１２の後側の３つのヘッドチップ２１１、…のうちの左端のヘッドチップ２１１よりも左側側部分が、平面視にて略直角に切り欠かれている。 The holding plate 212 is attached and fixed to the lower end portion 230 a of the housing 230.
In addition, on the holding plate 212, head chips 211 each including a predetermined number (for example, six) of nozzle substrates 2111 having substantially the same shape and size are arranged in a staggered manner in the left-right direction. That is, three head chips 211 are arranged on each of the front side and the rear side of the holding plate 212 at a predetermined equal interval, and the three front head chips 211, ... and the three rear head chips. 211,... Are shifted in the left-right direction by the width of one head chip 211 in the left-right direction.
Further, the holding plate 212 is formed in a stepped shape corresponding to the arrangement of a predetermined number (for example, six) of head chips 211. Specifically, of the three head chips 211 on the right side of the rightmost head chip 211 among the three head chips 211 on the front side of the holding plate 212, that is, on the rear side of the three head chips 211 on the holding plate 212. The front portion of the right end head chip 211 is cut out at a substantially right angle in plan view. Similarly, the rear part of the leftmost head chip 211 among the three head chips 211 on the front side of the holding plate 212, that is, the leftmost side of the three head chips 211 on the rear side of the holding plate 212. A portion on the left side of the head chip 211 is cut out at a substantially right angle in plan view.
　ヘッドチップ２１１は、複数のノズル２１１１ａ、…を備えた板状の部材である。
　以下に、ヘッドチップ２１１について詳細に説明する。
　図１１は、ヘッドチップ２１１の概略構成を示す部分断面図であり、一個のノズル２１１１ａに係る構成要素のみを図示している。 The head chip 211 is a plate-like member provided with a plurality of nozzles 2111a,.
Hereinafter, the head chip 211 will be described in detail.
FIG. 11 is a partial cross-sectional view illustrating a schematic configuration of the head chip 211, and illustrates only components related to one nozzle 2111a.
　図１１に示すように、ヘッドチップ２１１は、ノズル基板２１１１、中間基板２１１２、圧力室基板２１１３、第一接着層２１１４、配線層２１１５及び第二接着層２１１６が、この順で積層されて構成されている。 As shown in FIG. 11, the head chip 211 is configured by laminating a nozzle substrate 2111, an intermediate substrate 2112, a pressure chamber substrate 2113, a first adhesive layer 2114, a wiring layer 2115, and a second adhesive layer 2116 in this order. ing.
　ノズル基板２１１１は、シリコン製の基板であり、ヘッドチップ２１１の最下層に位置している。このノズル基板２１１１には、複数のノズル２１１１ａ、…が形成されている。
　ノズル２１１１ａは、例えば、略マトリクス状となるようにノズル面に配列されている。 The nozzle substrate 2111 is a silicon substrate and is located in the lowermost layer of the head chip 211. A plurality of nozzles 2111 a,... Are formed on the nozzle substrate 2111.
For example, the nozzles 2111a are arranged on the nozzle surface so as to have a substantially matrix shape.
　中間基板２１１２は、ガラス製の基板であり、ノズル基板２１１１の上面に積層され、接合されている。中間基板２１１２には、ノズル基板２１１１のノズル２１１１ａと連通する貫通孔２１１２ａが形成されている。 The intermediate substrate 2112 is a glass substrate, and is laminated and bonded to the upper surface of the nozzle substrate 2111. A through hole 2112 a that communicates with the nozzle 2111 a of the nozzle substrate 2111 is formed in the intermediate substrate 2112.
　圧力室基板２１１３は、圧力室層２１１３ａと振動板２１１３ｂとから構成されている。
　圧力室層２１１３ａは、シリコン製の基板であり、中間基板２１１２の上面に積層され、接合されている。圧力室層２１１３ａには、ノズル２１１１ａから吐出されるインクに吐出圧力を付与する圧力室２１１３ｃが、当該圧力室層２１１３ａを貫通するように形成されている。圧力室２１１３ｃは、貫通孔２１１２ａ及びノズル２１１１ａの上方に設けられ、これら貫通孔２１１２ａ及びノズル２１１１ａと連通している。また、圧力室層２１１３ａには、圧力室２１１３ｃと連通する連通孔２１１３ｄが、当該圧力室層２１１３ａを貫通しつつ水平方向に延在するように形成されている。
　振動板２１１３ｂは、圧力室２１１３ｃの開口を覆うように圧力室層２１１３ａの上面に積層され、接合されている。すなわち、振動板２１１３ｂは、圧力室２１１３ｃの上壁部を構成している。振動板２１１３ｂの表面には、酸化膜が形成されている。また、振動板２１１３ｂには、連通孔２１１３ｄと連通する貫通孔２１１３ｅが形成されている。 The pressure chamber substrate 2113 includes a pressure chamber layer 2113a and a diaphragm 2113b.
The pressure chamber layer 2113a is a silicon substrate, and is stacked on and bonded to the upper surface of the intermediate substrate 2112. In the pressure chamber layer 2113a, a pressure chamber 2113c that applies ejection pressure to the ink ejected from the nozzle 2111a is formed so as to penetrate the pressure chamber layer 2113a. The pressure chamber 2113c is provided above the through hole 2112a and the nozzle 2111a, and communicates with the through hole 2112a and the nozzle 2111a. In addition, a communication hole 2113d communicating with the pressure chamber 2113c is formed in the pressure chamber layer 2113a so as to extend in the horizontal direction while penetrating the pressure chamber layer 2113a.
The diaphragm 2113b is laminated on and bonded to the upper surface of the pressure chamber layer 2113a so as to cover the opening of the pressure chamber 2113c. That is, the diaphragm 2113b constitutes the upper wall portion of the pressure chamber 2113c. An oxide film is formed on the surface of the diaphragm 2113b. The diaphragm 2113b is formed with a through hole 2113e communicating with the communication hole 2113d.
　第一接着層２１１４は、振動板２１１３ｂの上面に積層されている。また、第一接着層２１１４は、振動板２１１３ｂと配線層２１１５とを接着する感光性樹脂層であるとともに、その内部に空間部２１１４ａを形成する隔壁層となっている。空間部２１１４ａは、第一接着層２１１４を貫通するように圧力室２１１３ｃの上方に形成され、内部に圧電素子２１１４ｂを収容している。
　圧電素子２１１４ｂは、圧力室２１１３ｃと略同一の平面視形状に形成され、振動板２１１３ｂを挟んで圧力室２１１３ｃと対向する位置に設けられている。この圧電素子２１１４ｂは、振動板２１１３ｂを変形させるためのＰＺＴ(lead zirconium titanate)からなるアクチュエータである。また、圧電素子２１１４ｂの下面に設けられた電極（図示略）が振動板２１１３ｂに接続されている。
　また、第一接着層２１１４には、振動板２１１３ｂの貫通孔２１１３ｅと連通する貫通孔２１１４ｃが、空間部２１１４ａとは独立して形成されている。 The first adhesive layer 2114 is laminated on the upper surface of the diaphragm 2113b. The first adhesive layer 2114 is a photosensitive resin layer that bonds the diaphragm 2113b and the wiring layer 2115, and is a partition layer that forms a space 2114a therein. The space 2114a is formed above the pressure chamber 2113c so as to penetrate the first adhesive layer 2114, and accommodates the piezoelectric element 2114b therein.
The piezoelectric element 2114b is formed in substantially the same plan view shape as the pressure chamber 2113c, and is provided at a position facing the pressure chamber 2113c with the diaphragm 2113b interposed therebetween. The piezoelectric element 2114b is an actuator made of PZT (lead zirconium titanate) for deforming the diaphragm 2113b. Further, an electrode (not shown) provided on the lower surface of the piezoelectric element 2114b is connected to the diaphragm 2113b.
Further, the first adhesive layer 2114 is formed with a through hole 2114c communicating with the through hole 2113e of the diaphragm 2113b independently of the space 2114a.
　配線層２１１５は、シリコン製の基板であるインターポーザー２１１５ａを備えている。インターポーザー２１１５ａの下面には、２層の酸化ケイ素の絶縁層２１１５ｂ、２１１５ｃが被覆され、上面には、同じく酸化ケイ素の絶縁層２１１５ｄが被覆されている。そして、インターポーザー２１１５ａの下方の２つの絶縁層２１１５ｂ、２１１５ｃのうち、下側に位置する絶縁層２１１５ｃが、第一接着層２１１４の上面に積層され、接合されている。
　インターポーザー２１１５ａを上下方向に貫通して貫通電極２１１５ｅが配設されている。貫通電極２１１５ｅの下端には、水平方向に延在する導電性基板２１１５ｆの一端が接続されている。この導電性基板２１１５ｆの他端には、圧電素子２１１４ｂの上面の電極（図示略）に設けられたスタッドバンプ２１１４ｄが、空間部２１１４ａ内に露出した半田２１１５ｇを介して接続されている。また、導電性基板２１１５ｆは、インターポーザー２１１５ａの下方の２つの絶縁層２１１５ｂ、２１１５ｃによって挟まれて保護されている。
　また、インターポーザー２１１５ａには、第一接着層２１１４の貫通孔２１１４ｃと連通するインレット２１１５ｈが、当該インターポーザー２１１５ａを上下方向に貫通するように形成されている。 The wiring layer 2115 includes an interposer 2115a which is a silicon substrate. The lower surface of the interposer 2115a is covered with two layers of silicon oxide insulating layers 2115b and 2115c, and the upper surface is similarly covered with an insulating layer 2115d of silicon oxide. Of the two insulating layers 2115b and 2115c below the interposer 2115a, the lower insulating layer 2115c is stacked on and bonded to the upper surface of the first adhesive layer 2114.
A through-electrode 2115e is disposed so as to penetrate the interposer 2115a in the vertical direction. One end of a conductive substrate 2115f extending in the horizontal direction is connected to the lower end of the through electrode 2115e. A stud bump 2114d provided on an electrode (not shown) on the upper surface of the piezoelectric element 2114b is connected to the other end of the conductive substrate 2115f via solder 2115g exposed in the space 2114a. The conductive substrate 2115f is sandwiched and protected by two insulating layers 2115b and 2115c below the interposer 2115a.
The interposer 2115a is formed with an inlet 2115h that communicates with the through hole 2114c of the first adhesive layer 2114 so as to penetrate the interposer 2115a in the vertical direction.
　第二接着層２１１６は、配線層２１１５の上面に配設された配線２１１６ａを覆いつつ、インターポーザー２１１５ａの絶縁層２１１５ｄの上面に積層され、接合されている。この第二接着層２１１６は、保持板２１２とヘッドチップ２１１とを接着する感光性樹脂層であるとともに、配線２１１６ａを保護する保護層となっている。配線２１１６ａは、水平方向に延在されて、一端が貫通電極２１１５ｅの上端に接続されるとともに、他端が中継基板２１８ａ及びコネクター基板２１８ｂを介して電装コネクター２１９に接続されている。また、第二接着層２１１６には、インレット２１１５ｈと連通する貫通孔２１１６ｂが形成されている。
　また、ヘッドチップ２１１の連通孔２１１３ｄ、貫通孔２１１３ｅ、２１１４ｃ、２１１６ｂ及びインレット２１１５ｈは、インク室２１３と圧力室２１１３ｃとを連通する流路を構成するので、インク室２１３のインクはこの流路を介してノズル２１１１ａに供給される。 The second adhesive layer 2116 is laminated and bonded on the upper surface of the insulating layer 2115d of the interposer 2115a while covering the wiring 2116a disposed on the upper surface of the wiring layer 2115. The second adhesive layer 2116 is a photosensitive resin layer that adheres the holding plate 212 and the head chip 211, and also serves as a protective layer that protects the wiring 2116a. The wiring 2116a extends in the horizontal direction, and one end is connected to the upper end of the through electrode 2115e, and the other end is connected to the electrical connector 219 via the relay board 218a and the connector board 218b. The second adhesive layer 2116 has a through hole 2116b that communicates with the inlet 2115h.
Further, the communication hole 2113d, the through holes 2113e, 2114c, 2116b, and the inlet 2115h of the head chip 211 constitute a flow path that connects the ink chamber 213 and the pressure chamber 2113c, so that the ink in the ink chamber 213 passes through this flow path. Via the nozzle 2111a.
　次に、筐体２３０について詳細に説明する。
　筐体２３０は、図９Ａ等に示すように、ヘッドチップ２１１を保持する保持板２１２が取り付け固定された下端部（一端部）２３０ａ側の寸法が上端部（他端部）２３０ｂ側の寸法に対して大きい形状に形成されている。即ち、筐体２３０の上端部２３０ｂ側は、下端部２３０ａ側から上端部２３０ｂ側に亘る上下方向（一方向）に略直交する断面の寸法が下端部２３０ａ側の上下方向に略直交する断面の寸法よりも小さく形成されている。
　具体的には、筐体２３０の下端部２３０ａ側に、上下方向に略直交する断面の寸法が上下方向に沿って略等しい形状をなす大寸法部２３１が設けられている。また、大寸法部２３１の上端部２３０ｂに連続するように、上下方向に略直交する断面の寸法が大寸法部２３１よりも小さく、且つ、上下方向に略直交する断面の寸法が上下方向に沿って略等しい形状をなす小寸法部２３２が設けられている。 Next, the housing 230 will be described in detail.
As shown in FIG. 9A and the like, the casing 230 has a dimension on the lower end (one end) 230a side to which the holding plate 212 for holding the head chip 211 is attached and fixed to a dimension on the upper end (other end) 230b side. On the other hand, it is formed in a large shape. That is, the upper end portion 230b side of the housing 230 has a cross-sectional dimension that is substantially orthogonal to the vertical direction (one direction) from the lower end portion 230a side to the upper end portion 230b side. It is formed smaller than the dimension.
Specifically, a large dimension portion 231 having a shape in which the cross-sectional dimension substantially perpendicular to the vertical direction is substantially equal along the vertical direction is provided on the lower end 230a side of the housing 230. In addition, the dimension of the cross section substantially orthogonal to the vertical direction is smaller than that of the large dimension part 231 and the dimension of the cross section substantially orthogonal to the vertical direction is along the vertical direction so as to be continuous with the upper end 230b of the large dimension part 231. The small dimension part 232 which makes a substantially equal shape is provided.
　大寸法部２３１は、保持板２１２の平面視形状を上下方向に伸ばしたような外形状をなしている。即ち、大寸法部２３１の上下方向に略直交する断面の形状及び寸法は、保持板２１２の外側面の上下方向に略直交する断面の形状及び寸法と略等しくなっている。
　つまり、大寸法部２３１の内側には、当該筐体２３０に配設される各種のヘッド構成部品の収納空間が十分に確保されている。 The large dimension portion 231 has an outer shape in which the planar view shape of the holding plate 212 is extended in the vertical direction. That is, the shape and size of the cross section substantially perpendicular to the vertical direction of the large dimension portion 231 are substantially equal to the shape and size of the cross section substantially perpendicular to the vertical direction of the outer surface of the holding plate 212.
That is, a sufficient storage space for various head components arranged in the housing 230 is secured inside the large dimension portion 231.
　小寸法部２３２は、大寸法部２３１に対して前後方向の長さがわずかに短くされている。
　即ち、小寸法部２３２の前面部２３２ａ及び後面部２３２ｂと大寸法部２３１の前面部２３１ａ及び後面部２３１ｂは、いずれも前後方向に略直交する平面をなしている。そして、小寸法部２３２の前面部２３２ａは、大寸法部２３１の前面部２３１ａに対して所定の距離だけ後側に配置され、同様に、小寸法部２３２の後面部２３２ｂは、大寸法部２３１の後面部２３１ｂに対して所定の距離だけ前側に配置されている。
　また、小寸法部２３２の前後方向の長さ、即ち、前面部２３２ａと後面部２３２ｂの間の長さは、フレーム部２２０の前後の内側面どうしの長さと略等しいか、或いは、この長さよりもわずかに短くなっている。 The small dimension portion 232 is slightly shorter in the front-rear direction than the large dimension portion 231.
That is, the front surface portion 232a and the rear surface portion 232b of the small size portion 232 and the front surface portion 231a and the rear surface portion 231b of the large size portion 231 are all flat surfaces substantially orthogonal to the front-rear direction. The front surface portion 232a of the small size portion 232 is disposed on the rear side by a predetermined distance with respect to the front surface portion 231a of the large size portion 231, and similarly, the rear surface portion 232b of the small size portion 232 is the large size portion 231. The rear surface portion 231b is disposed on the front side by a predetermined distance.
Further, the length in the front-rear direction of the small dimension portion 232, that is, the length between the front surface portion 232a and the rear surface portion 232b is substantially equal to the length between the front and rear inner surfaces of the frame portion 220, or from this length Is slightly shorter.
　また、小寸法部２３２の前面部２３２ａ及び後面部２３２ｂには、フレーム部２２０の溝部２２３と係合する突起部ａ１、ｂ１が設けられている（図９Ａ及び図１０等参照）。
　突起部ａ１は、小寸法部２３２の前面部２３２ａの左右両端部の外面から前側に所定の長さ突出して形成されている。同様に、突起部ｂ１は、小寸法部２３２の後面部２３２ｂの左右両端部の外面から後側に所定の長さ突出して形成されている。
　また、突起部ａ１、ｂ１の各々は、例えば、略円柱状に形成されているが、形状は一例であってこれに限られるものではない。例えば、突起部ａ１、ｂ１の前後方向に直交する断面を矩形状にするなど適宜任意に変更可能である。
　また、突起部ａ１、ｂ１の突出長は、フレーム部２２０の前面部２２１及び後面部２２２の厚さ等に応じて適宜任意に変更可能である。 Further, the front surface portion 232a and the rear surface portion 232b of the small dimension portion 232 are provided with projection portions a1 and b1 that engage with the groove portion 223 of the frame portion 220 (see FIG. 9A and FIG. 10).
The protrusion a1 is formed so as to protrude a predetermined length from the outer surface of the left and right ends of the front surface portion 232a of the small dimension portion 232 to the front side. Similarly, the protrusion b1 is formed to protrude to the rear side by a predetermined length from the outer surfaces of the left and right ends of the rear surface portion 232b of the small dimension portion 232.
Each of the protrusions a1 and b1 is formed in, for example, a substantially cylindrical shape, but the shape is an example and the present invention is not limited to this. For example, the cross section orthogonal to the front-back direction of the protrusions a1 and b1 can be arbitrarily changed as appropriate, for example, by making the cross section rectangular.
Further, the protruding lengths of the protrusions a1 and b1 can be arbitrarily changed as appropriate according to the thicknesses of the front surface part 221 and the rear surface part 222 of the frame part 220, and the like.
　そして、小寸法部２３２の突起部ａ１、ｂ１が、フレーム部２２０の対応する各溝部２２３に差し込まれて当該溝部２２３の最奥部に係合することで、当該インクジェットヘッド２１０がフレーム部２２０に取り付けられる。これにより、当該インクジェットヘッド２１０のフレーム部２２０に対する左右方向の移動が規制されて当該インクジェットヘッド２１０がフレーム部２２０に対して左右方向に位置決めされた状態となる。
　このように、小寸法部２３２の各突起部ａ１、ｂ１は、当該インクジェットヘッド２１０を支持するフレーム部（支持体）２２０に取り付けられる支持体取付部を構成している。 Then, the protrusions a 1 and b 1 of the small dimension part 232 are inserted into the corresponding groove parts 223 of the frame part 220 and engaged with the innermost part of the groove part 223, so that the inkjet head 210 is attached to the frame part 220. It is attached. Thereby, the movement of the inkjet head 210 in the left-right direction with respect to the frame portion 220 is restricted, and the inkjet head 210 is positioned in the left-right direction with respect to the frame portion 220.
As described above, the protrusions a <b> 1 and b <b> 1 of the small size portion 232 constitute a support attachment portion that is attached to the frame portion (support) 220 that supports the inkjet head 210.
　また、フレーム部２２０の前面部２２１及び後面部２２２には、溝部２２３が左右方向に沿って複数配設されているので、複数のインクジェットヘッド２１０、…の各々の突起部ａ１、ｂ１が複数の溝部２２３、…に係合することで、これら複数のインクジェットヘッド２１０、…がその並び方向に位置決めされた状態となる。
　即ち、上記のように構成されたインクジェットヘッド２１０が、フレーム部２２０に左右方向に沿って複数（例えば、３つ）配設されることでラインヘッド２０３を構成する。具体的には、各インクジェットヘッド２１０の保持板２１２及び筐体２３０の左右方向の両端部によって凹凸が形成されているので、例えば、３つのインクジェットヘッド２１０、…のうち、隣合うインクジェットヘッド２１０どうしの左右両端部の凹凸を係合させるようにして当該３つのインクジェットヘッド２１０が左右方向に沿ってフレーム部２２０に配設された状態となる。 Further, since a plurality of groove portions 223 are arranged in the left-right direction on the front surface portion 221 and the rear surface portion 222 of the frame portion 220, each of the protrusions a1, b1 of the plurality of inkjet heads 210,. By engaging with the groove portions 223,..., The plurality of inkjet heads 210,.
That is, the line head 203 is configured by arranging a plurality of (for example, three) inkjet heads 210 configured as described above along the left-right direction on the frame portion 220. Specifically, since the unevenness is formed by the holding plate 212 of each inkjet head 210 and both ends in the left-right direction of the housing 230, for example, among the three inkjet heads 210,. The three inkjet heads 210 are arranged in the frame portion 220 along the left-right direction so as to engage the unevenness of the left and right ends.
　なお、小寸法部２３２の上面部２３２ｃには、供給用コネクター２１５、排出用コネクター２１６及び電装コネクター２１９の各々に対応させて開口部ｃ１、ｃ２、ｃ３が形成され、これらの開口部ｃ１、ｃ２、ｃ３に供給用コネクター２１５、排出用コネクター２１６及び電装コネクター２１９が挿通されている。 In addition, openings c1, c2, and c3 are formed on the upper surface portion 232c of the small size portion 232 so as to correspond to the supply connector 215, the discharge connector 216, and the electrical connector 219, and these openings c1, c2 are formed. , C3, a supply connector 215, a discharge connector 216, and an electrical connector 219 are inserted.
　以上のように、第２実施形態のインクジェット記録装置２００によれば、内側にヘッド構成部品が配置された筐体２３０のノズル基板２１１１が取り付け固定された下端部２３０ａ側と反対となる上端部２３０ｂ側は、上下方向に略直交する断面の寸法が下端部２３０ａ側の上下方向に略直交する断面の寸法よりも小さく形成され、当該上端部２３０ｂ側の外面に当該インクジェットヘッド２１０を支持するフレーム部２２０に取り付けられる支持体取付部が設けられているので、筐体２３０の下端部２３０ａよりも上下方向に略直交する断面の寸法が小さい上端部２３０ｂ側の外面の支持体取付部、特に、突起部ａ１、ｂ１を利用して当該インクジェットヘッド２１０をフレーム部２２０に取り付けることができる。具体的には、筐体２３０の下端部２３０ａ側に上下方向に略直交する断面の寸法が上下方向に沿って略等しい大寸法部２３１が設けられるとともに、筐体２３０の上端部２３０ｂ側に上下方向に略直交する断面の寸法が大寸法部２３１よりも小さく、且つ、当該断面の寸法が上下方向に沿って略等しい小寸法部２３２が設けられ、小寸法部２３２の外面に設けられた突起部ａ１、ｂ１をフレーム部２２０の対応する各溝部２２３に係合させることで、当該インクジェットヘッド２１０をフレーム部２２０に取り付けることができる。
　これにより、ラインヘッド２０３、２０４、２０５、２０６を構成する複数のインクジェットヘッド２１０、…を所定方向に沿ってフレーム部２２０に配置する場合に、これら複数のインクジェットヘッド２１０、…の並び方向（左右方向）やこの並び方向に略直交する一方向（前後方向）の幅が大きくなるのを抑制しつつ、複数のインクジェットヘッド２１０、…を密に配置することができる。従って、複数のインクジェットヘッド２１０、…を効率良く配置することができ、省スペース化を図ることができる。 As described above, according to the inkjet recording apparatus 200 of the second embodiment, the upper end portion 230b opposite to the lower end portion 230a side to which the nozzle substrate 2111 of the housing 230 in which the head components are arranged is attached and fixed. The frame portion is formed so that the dimension of the cross section substantially perpendicular to the vertical direction is smaller than the dimension of the cross section substantially perpendicular to the vertical direction on the lower end portion 230a, and the frame portion that supports the inkjet head 210 on the outer surface on the upper end portion 230b side. Since the support attachment part attached to 220 is provided, the support attachment part on the outer surface on the upper end part 230b side whose dimension of the cross section substantially perpendicular to the vertical direction is smaller than the lower end part 230a of the housing 230, particularly the protrusion The inkjet head 210 can be attached to the frame portion 220 using the portions a1 and b1. Specifically, a large-sized portion 231 having a cross-sectional dimension substantially orthogonal to the vertical direction is provided on the lower end portion 230a side of the housing 230 along the vertical direction, and the upper and lower portions 230b of the housing 230 are vertically disposed on the upper end portion 230b side. A projection provided on the outer surface of the small dimension portion 232, having a small dimension portion 232 in which the dimension of the cross section substantially perpendicular to the direction is smaller than that of the large dimension portion 231 and the dimension of the cross section is substantially equal along the vertical direction. The inkjet head 210 can be attached to the frame portion 220 by engaging the portions a 1 and b 1 with the corresponding groove portions 223 of the frame portion 220.
Thus, when a plurality of inkjet heads 210,... Constituting the line heads 203, 204, 205, 206 are arranged in the frame part 220 along a predetermined direction, the arrangement direction of these inkjet heads 210,. Direction) and a width in one direction (front-rear direction) substantially orthogonal to this arrangement direction can be suppressed, and a plurality of inkjet heads 210,. Therefore, the plurality of inkjet heads 210,... Can be arranged efficiently, and space saving can be achieved.
　また、突起部ａ１、ｂ１がフレーム部２２０の各溝部２２３と係合することで、当該インクジェットヘッド２１０を左右方向に位置決めすることができる。特に、フレーム部２２０に設けられた複数の溝部２２３、…に、左右方向に沿って配設される複数のインクジェットヘッド２１０の各々の突起部ａ１、ｂ１が係合することで、これら複数のインクジェットヘッド２１０、…をその並び方向に簡便に位置決めすることができる。 In addition, the protrusions a1 and b1 engage with the groove portions 223 of the frame portion 220, so that the inkjet head 210 can be positioned in the left-right direction. In particular, the projections a1 and b1 of the plurality of inkjet heads 210 disposed in the left-right direction are engaged with the plurality of grooves 223 provided in the frame portion 220, whereby the plurality of inkjets. The heads 210,... Can be easily positioned in the arrangement direction.
　以下に、インクジェットヘッド２１０の変形例について説明する。 Hereinafter, modified examples of the inkjet head 210 will be described.
　例えば、インクジェットヘッド２１０は、当該インクジェットヘッド２１０を所定方向に位置決めする第１位置決め機構部（図示略）を設けても良い。
　即ち、例えば、突起部ａ１、ｂ１等の代わりに筐体２３０の小寸法部２３２の所定位置にネジ穴を設け、当該ネジ穴に螺子込まれる取付用ネジの雄ネジ部分をフレーム部２２０の溝部２２３に係合させつつネジ穴に螺子込んで取り付け固定することで、当該インクジェットヘッド２１０をフレーム部２２０に対して左右方向に位置決めすることができる。
　このとき、取付用ネジの螺子込み量を調整することがで、インクジェットヘッド２１０をフレーム部２２０に対して前後方向に位置決めするようにしても良い。 For example, the inkjet head 210 may be provided with a first positioning mechanism (not shown) that positions the inkjet head 210 in a predetermined direction.
That is, for example, instead of the protrusions a1 and b1, etc., a screw hole is provided at a predetermined position of the small size portion 232 of the housing 230, and the male screw portion of the mounting screw screwed into the screw hole is used as the groove portion of the frame portion 220. The inkjet head 210 can be positioned in the left-right direction with respect to the frame portion 220 by being screwed into the screw hole while being engaged with the H.223 and fixed.
At this time, the inkjet head 210 may be positioned in the front-rear direction with respect to the frame portion 220 by adjusting the screwing amount of the mounting screw.
　これにより、ラインヘッド２０３、２０４、２０５、２０６を構成する複数のインクジェットヘッド２１０、…の並び方向や前後方向の幅が大きくなるのを抑制しつつ、複数のインクジェットヘッド２１０、…を密に配置することができるとともに、各インクジェットヘッド２１０をフレーム部２２０に対して所定方向に簡便に位置決めすることができる。 As a result, the plurality of inkjet heads 210,... Are densely arranged while suppressing an increase in the arrangement direction and the width in the front-rear direction of the plurality of inkjet heads 210 constituting the line heads 203, 204, 205, 206. In addition, each inkjet head 210 can be easily positioned in a predetermined direction with respect to the frame portion 220.
　また、図１２Ａ及び図１２Ｂに示すように、インクジェットヘッド２１０ａの筐体２３０の隣合うインクジェットヘッド２１０ａと対向する面に、当該インクジェットヘッド２１０ａを所定方向に位置決めする第２位置決め機構部２４０を設けても良い。
　即ち、第２位置決め機構部２４０は、各インクジェットヘッド２１０ａの筐体２３０における隣合うインクジェットヘッド２１０ａと対向する左右の両側面部２３３、２３４に設けられている。具体的には、第２位置決め機構部２４０は、互いに係合する凸部２４１及び凹部２４２を有し、複数のインクジェットヘッド２１０ａ、…のうち、一方のインクジェットヘッド２１０ａの筐体２３０における他方のインクジェットヘッド２１０ａと対向する面に凸部２４１が設けられ、他方のインクジェットヘッド２１０ａの筐体２３０における一方のインクジェットヘッド２１０ａと対向する面に凹部２４２が設けられている。 Also, as shown in FIGS. 12A and 12B, a second positioning mechanism 240 for positioning the inkjet head 210a in a predetermined direction is provided on the surface of the casing 230 of the inkjet head 210a facing the adjacent inkjet head 210a. Also good.
In other words, the second positioning mechanism 240 is provided on the left and right side surfaces 233 and 234 facing the adjacent inkjet head 210a in the housing 230 of each inkjet head 210a. Specifically, the second positioning mechanism portion 240 has a convex portion 241 and a concave portion 242 that engage with each other, and among the plurality of ink jet heads 210a,..., The other ink jet in the housing 230 of one ink jet head 210a. A convex portion 241 is provided on the surface facing the head 210a, and a concave portion 242 is provided on the surface facing the one inkjet head 210a in the housing 230 of the other inkjet head 210a.
　凸部２４１は、例えば、筐体２３０の左側面部２３４から左側に所定の長さ突出して形成されている。また、凸部２４１は、前後方向の中央部側に対して両端部側の突出量が小さくされている。
　凹部２４２は、凸部２４１と係合可能となるように当該凸部２４１の形状に対応させて形成されている。即ち、凹部２４２の前後方向の両端部側が中央部側に対して突出量が大きくなるように筐体２３０の右側面部２３３から右側に所定の長さ突出することで、所定の深さの凹部２４２が構成されている。
　なお、凸部２４１及び凹部２４２は、互いに係合する形状であれば如何なる形状であっても良く、例えば、外形が円弧状に形成されていても良いし、台形状に形成されていても良い。 The convex portion 241 is formed to protrude from the left side surface portion 234 of the housing 230 to the left by a predetermined length, for example. Further, the protruding portion 241 has a small protruding amount on both end sides with respect to the center side in the front-rear direction.
The concave portion 242 is formed corresponding to the shape of the convex portion 241 so as to be engageable with the convex portion 241. That is, by projecting a predetermined length from the right side surface portion 233 of the housing 230 to the right side so that the protruding amount of the both ends in the front-rear direction of the concave portion 242 is larger than the central portion side, the concave portion 242 having a predetermined depth. Is configured.
The convex portion 241 and the concave portion 242 may have any shape as long as they are engaged with each other. For example, the outer shape may be formed in an arc shape or a trapezoidal shape. .
　そして、例えば、３つのインクジェットヘッド２１０ａ、…のうち、隣合うインクジェットヘッド２１０ａどうしの左右両端部の凹凸を係合させるようにして当該３つのインクジェットヘッド２１０ａを左右方向に沿ってフレーム部２２０に配設する際に、一方のインクジェットヘッド２１０ａの筐体２３０の凸部２４１と他方のインクジェットヘッド２１０ａの筐体２３０の凹部２４２とを突き合わせるようにして係合させる。これにより、隣合うインクジェットヘッド２１０ａどうしがその並び方向に位置決めされた状態とすることができる。また、隣合うインクジェットヘッド２１０ａどうしの前後方向の移動も規制されて当該インクジェットヘッド２１０ａが前後方向に位置決めされた状態となる。 And, for example, among the three inkjet heads 210a,..., The three inkjet heads 210a are arranged on the frame portion 220 along the left-right direction so that the concavities and convexities at the left and right ends of the adjacent inkjet heads 210a are engaged. When installing, the convex portion 241 of the casing 230 of one inkjet head 210a and the concave portion 242 of the casing 230 of the other inkjet head 210a are engaged with each other. Thereby, it can be set as the state by which the adjacent inkjet heads 210a were positioned in the arrangement direction. In addition, the movement of the adjacent inkjet heads 210a in the front-rear direction is restricted, and the inkjet heads 210a are positioned in the front-rear direction.
　これにより、ラインヘッド２０３、２０４、２０５、２０６を構成する複数のインクジェットヘッド２１０ａ、…の並び方向や前後方向の幅が大きくなるのを抑制しつつ、複数のインクジェットヘッド２１０ａ、…を密に配置することができるとともに、各インクジェットヘッド２１０ａを所定方向に簡便に位置決めすることができる。 As a result, the plurality of inkjet heads 210a,... Are arranged densely while suppressing the increase in the arrangement direction and the width in the front-rear direction of the plurality of inkjet heads 210a,... Constituting the line heads 203, 204, 205, 206. In addition, each inkjet head 210a can be easily positioned in a predetermined direction.
　また、上記実施形態では、支持体としてフレーム部２２０を例示したが、一例であってこれに限られるものではなく、インクジェットヘッド２１０、２１０ａを支持する構成であれば適宜任意に変更可能である。 In the above-described embodiment, the frame portion 220 is exemplified as the support body. However, the frame portion 220 is only an example and is not limited thereto, and can be arbitrarily changed as long as the structure supports the inkjet heads 210 and 210a.
［第３実施形態］
　次に、本発明の第３実施形態を図面に基づいて説明する。
　図１３は、本発明の第３実施形態のラインヘッド３０３を示す斜視図である。また、図１４Ａ及び図１４Ｂは、ラインヘッド３０３の一部分を拡大して示した斜視図である。 [Third Embodiment]
Next, 3rd Embodiment of this invention is described based on drawing.
FIG. 13 is a perspective view showing a line head 303 according to the third embodiment of the present invention. 14A and 14B are perspective views showing a part of the line head 303 in an enlarged manner.
　第３実施形態のラインヘッド３０３は、図１３に示すように、フレーム部３２０（支持部材）に複数のインクジェットヘッド３１０が固定（支持）されてなる。インクジェットヘッド３１０は、記録媒体Ｍ（記録紙）と対向してこの記録媒体Ｍの搬送方向と直交する方向（以降、幅方向と記す）に配列され、この記録媒体Ｍの幅全体に亘って設けられている。即ち、このラインヘッド３０３は、固定されて設けられており、記録媒体Ｍを搬送しながら適宜なタイミングで各ノズルからインクを吐出させることで、記録媒体Ｍ全面に画像の形成が可能な１パス（シングルパス）描画方式のヘッドである。フレーム部３２０に固定されるインクジェットヘッド３１０の数は、ここでは、例として３個が示されているが、記録媒体Ｍの幅及び各インクジェットヘッド３１０の長さに応じて定められる。隣接するインクジェットヘッド３１０の間には、僅かに隙間が設けられており、この隙間には、弾性部材３４０（スペーサー部）が設けられている。 As shown in FIG. 13, the line head 303 according to the third embodiment has a plurality of inkjet heads 310 fixed (supported) to a frame part 320 (supporting member). The ink jet head 310 is arranged in a direction (hereinafter referred to as a width direction) orthogonal to the transport direction of the recording medium M so as to face the recording medium M (recording paper), and is provided over the entire width of the recording medium M. It has been. In other words, the line head 303 is provided in a fixed manner, and allows one pass to form an image on the entire surface of the recording medium M by ejecting ink from each nozzle at an appropriate timing while conveying the recording medium M. This is a (single pass) drawing head. Although the number of inkjet heads 310 fixed to the frame part 320 is three here as an example, it is determined according to the width of the recording medium M and the length of each inkjet head 310. A slight gap is provided between adjacent inkjet heads 310, and an elastic member 340 (spacer portion) is provided in this gap.
　フレーム部３２０は、枠状の支持部材である。このフレーム部３２０は、例えば、ステンレス、鉄、アルミニウムといった金属で形成されている。この金属としては、特に、低膨張金属が適しており、例えば、インバー、スーパーインバー、ノビナイト（登録商標）などをより好ましく使用することが出来る。図１４Ａに示すように、フレーム部３２０には、それぞれ２本の調整ネジ３２３ａ、３２３ｂ及び３本の固定ネジ３２４ａ～３２４ｃを用いて複数のインクジェットヘッド３１０が固定されている。このフレーム部３２０には、各インクジェットヘッド３１０と対向する部分にそれぞれ２箇所の突起受け部３２２ａ、３２２ｂ（取付受部）が設けられている。この突起受け部３２２ａ、３２２ｂは、後述するインクジェットヘッド３１０の突起部３１２ａ、３１２ｂの形状に対応した凹部であり、その一側面がインクジェットヘッド３１０の配列方向（幅方向）に所定の角度で傾斜している。また、この傾斜した側面（傾斜面）とは反対側の側面には、プランジャー３２７ａ、３２７ｂが設けられている。これらのプランジャー３２７ａ、３２７ｂは、インクジェットヘッド３１０の突起部３１２ａ、３１２ｂがフレーム部３２０の突起受け部３２２ａ、３２２ｂの内部で一方に偏って配置されるように付勢する。各インクジェットヘッド３１０は、後述するように、フレーム部３２０に対して所定の範囲内で固定位置を調整することが出来る。 The frame part 320 is a frame-shaped support member. The frame part 320 is made of, for example, a metal such as stainless steel, iron, or aluminum. As this metal, a low expansion metal is particularly suitable, and for example, Invar, Super Invar, Novinite (registered trademark), and the like can be more preferably used. As shown in FIG. 14A, a plurality of inkjet heads 310 are fixed to the frame portion 320 using two adjustment screws 323a and 323b and three fixing screws 324a to 324c, respectively. The frame portion 320 is provided with two protrusion receiving portions 322a and 322b (attachment receiving portions) at portions facing the inkjet heads 310, respectively. The projection receiving portions 322a and 322b are concave portions corresponding to the shapes of the projection portions 312a and 312b of the inkjet head 310 described later, and one side surface thereof is inclined at a predetermined angle in the arrangement direction (width direction) of the inkjet head 310. ing. Plungers 327a and 327b are provided on the side surface opposite to the inclined side surface (inclined surface). These plungers 327a and 327b urge the protrusions 312a and 312b of the inkjet head 310 so that they are arranged in a biased manner inside the protrusion receiving parts 322a and 322b of the frame part 320. As will be described later, each inkjet head 310 can adjust the fixed position within a predetermined range with respect to the frame portion 320.
　インクジェットヘッド３１０は、図１４Ｂに示すように、それぞれ、筐体３３０の内部に複数のヘッドチップ３１１を備えており、ここでは例として６個のヘッドチップ３１１を示している。この筐体３３０は、例えば、樹脂製であり、フレーム部３２０と対向する面に突起部３１２ａ、３１２ｂ（取付突起）が設けられている。また、この突起部３１２ａ、３１２ｂが設けられている面において、内部のヘッドチップ３１１に連通する供給用コネクター３１５ａ、３１５ｂが外部に貫通している。突起部３１２ａ、３１２ｂの形状は、突起受け部３２２ａ、３２２ｂと対応したものであり、上述の突起受け部３２２ａ、３２２ｂに設けられた傾斜面と対向する一の側面が所定の角度で傾斜している。従って、突起部３１２ａ、３１２ｂの形状は、先端方向に向けて幅方向の幅が狭くなる形状となっている。インクジェットヘッド３１０は、突起部３１２ａ、３１２ｂがフレーム部３２０の突起受け部３２２ａ、３２２ｂと対面配置されて嵌合される位置関係で調整ネジ３２３ａ、３２３ｂ及び固定ネジ３２４ａ～３２４ｃによりフレーム部３２０に固定されている。 As shown in FIG. 14B, each inkjet head 310 includes a plurality of head chips 311 inside a housing 330. Here, six head chips 311 are shown as an example. The housing 330 is made of, for example, resin, and is provided with protrusions 312a and 312b (attachment protrusions) on the surface facing the frame part 320. In addition, on the surface where the protrusions 312a and 312b are provided, supply connectors 315a and 315b communicating with the internal head chip 311 penetrate to the outside. The shapes of the protrusions 312a and 312b correspond to the protrusion receiving parts 322a and 322b, and one side surface facing the inclined surface provided in the above-described protrusion receiving parts 322a and 322b is inclined at a predetermined angle. Yes. Therefore, the shape of the protrusions 312a and 312b is such that the width in the width direction becomes narrower toward the tip. The inkjet head 310 is fixed to the frame part 320 by adjusting screws 323a and 323b and fixing screws 324a to 324c in such a positional relationship that the protruding parts 312a and 312b are arranged to face and be fitted to the protruding parts 322a and 322b of the frame part 320. Has been.
　一方、インクジェットヘッド３１０において筐体３３０がフレーム部３２０に固定されている面とは反対側の面（一の面）では、筐体３３０が開放されており、内部のヘッドチップ３１１の一の端面がそれぞれ露出されている。このヘッドチップ３１１は、従来用いられているヘッドチップの何れの形式であってもよい。筐体３３０から露出されたヘッドチップ３１１の端面には、それぞれ多数（例えば、１２８個）のノズル（インクノズル開口部）が千鳥格子状といった所定のパターンで配列されており、少なくとも記録媒体Ｍの幅方向には所定の解像度で当該記録媒体Ｍの幅に亘り隙間のない配列となっている。外部から供給用コネクター３１５ａ、３１５ｂを介して供給されたインクは、ヘッドチップ３１１において、各ノズルからインクを吐出させるための圧力室に送られ、これらの圧力室の変形動作などにより圧力室内のインクが加圧されて各ノズルから吐出される。 On the other hand, on the surface (one surface) opposite to the surface where the housing 330 is fixed to the frame portion 320 in the inkjet head 310, the housing 330 is open, and one end surface of the internal head chip 311. Are exposed. The head chip 311 may be any type of conventionally used head chip. A large number (for example, 128) of nozzles (ink nozzle openings) are arranged in a predetermined pattern such as a staggered pattern on the end face of the head chip 311 exposed from the housing 330, and at least the recording medium M In the width direction of the recording medium M, there is no gap across the width of the recording medium M with a predetermined resolution. The ink supplied from the outside via the supply connectors 315a and 315b is sent to the pressure chambers for ejecting ink from the nozzles in the head chip 311. The ink in the pressure chambers is deformed by these pressure chambers. Is pressurized and discharged from each nozzle.
　弾性部材３４０は、インクジェットヘッド３１０をフレーム部３２０に取り付ける際の衝撃防止用緩衝部材として用いられると共に、ラインヘッド３０３が組み立てられた後の通常の状態では、両側のインクジェットヘッド３１０から押し込まれた状態となっており、フレーム部３２０に固定されたインクジェットヘッド３１０が幅方向に動くのを妨げている。弾性部材３４０としては、特には限られないが、種々のゴム材、例えば、シリコンゴム、ウレタンゴム、クロロプレンゴム、若しくはフッ素ゴム、又は、スポンジ材、例えば、エチレンプロピレンジエンモノマー（ＥＰＤＭ）発泡体、ポリウレタンスポンジ、若しくはニトリルスポンジなどを用いることが出来る。 The elastic member 340 is used as a shock-absorbing buffer member when the inkjet head 310 is attached to the frame portion 320, and in a normal state after the line head 303 is assembled, it is pushed from the inkjet heads 310 on both sides. Thus, the inkjet head 310 fixed to the frame part 320 is prevented from moving in the width direction. The elastic member 340 is not particularly limited, but various rubber materials such as silicon rubber, urethane rubber, chloroprene rubber, or fluoro rubber, or sponge materials such as ethylene propylene diene monomer (EPDM) foam, Polyurethane sponge or nitrile sponge can be used.
　次に、本実施形態のラインヘッド３０３におけるインクジェットヘッド３１０のフレーム部３２０への取り付けについて説明する。 Next, attachment of the inkjet head 310 to the frame part 320 in the line head 303 of this embodiment will be described.
　図１５Ａ及び図１５Ｂは、それぞれ、ラインヘッド３０３における一のインクジェットヘッド３１０に対応する部分の側面図及び上面図である。また、図１６Ａ及び図１６Ｂは、インクジェットヘッド３１０の固定部分を説明する図である。 FIGS. 15A and 15B are a side view and a top view, respectively, of a portion corresponding to one inkjet head 310 in the line head 303. 16A and 16B are diagrams for explaining a fixed portion of the inkjet head 310. FIG.
　図１５Ａに示すように、フレーム部３２０にインクジェットヘッド３１０を固定する５本のネジのうち、２本の調整ネジ３２３ａ、３２３ｂは、それぞれ、二つの突起受け部３２２ａ、３２２ｂの位置に設けられ、図１５Ｂに示すように、固定ネジ３２４ａ～３２４ｃは、突起受け部３２２ａ、３２２ｂとは異なる位置に設けられている。 As shown in FIG. 15A, of the five screws that fix the inkjet head 310 to the frame portion 320, two adjustment screws 323a and 323b are provided at the positions of the two protrusion receiving portions 322a and 322b, respectively. As shown in FIG. 15B, the fixing screws 324a to 324c are provided at positions different from the protrusion receiving portions 322a and 322b.
　調整ネジ３２３ａには、図１６Ａに示すように、その先端部の所定の長さに亘りネジ山及びネジ溝が設けられており、突起受け部３２２ａに設けられた長穴３２５ａ（図１６Ｂ参照）を貫通して、インクジェットヘッド３１０の突起部３１２ａに設けられたねじ穴３１３ａと適宜な長さで噛み合わされる。調整ネジ３２３ｂにも同様にネジ山及びネジ溝が設けられており、長穴３２５ｂを貫通してねじ穴３１３ｂと適宜な長さで噛み合わされる。そして、この噛み合せ部分の長さにより調整ネジ３２３ａ、３２３ｂの頭部の位置が定められ、フレーム部３２０とインクジェットヘッド３１０との間の距離が規定される。即ち、調整ネジ３２３ａ、３２３ｂが締められるほどフレーム部３２０とインクジェットヘッド３１０との間の距離が縮まり、緩められると距離が広がる。長穴３２５ａ、３２５ｂは、それぞれ幅方向に伸びた形状となっており、フレーム部３２０に対し、調整ネジ３２３ａ、３２３ｂ及びインクジェットヘッド３１０が相対的に幅方向に移動可能となっている。これら、調整ネジ３２３ａ、３２３ｂ及びねじ穴３１３ａ、３１３ｂにより距離調整機構が構成される。 As shown in FIG. 16A, the adjustment screw 323a is provided with a screw thread and a thread groove over a predetermined length at its tip, and a long hole 325a provided in the protrusion receiving portion 322a (see FIG. 16B). And is engaged with a screw hole 313a provided in the protrusion 312a of the inkjet head 310 with an appropriate length. The adjustment screw 323b is similarly provided with a screw thread and a screw groove, and penetrates the long hole 325b and meshes with the screw hole 313b with an appropriate length. The positions of the heads of the adjustment screws 323a and 323b are determined by the length of the meshing portion, and the distance between the frame portion 320 and the inkjet head 310 is defined. That is, the distance between the frame part 320 and the inkjet head 310 is reduced as the adjustment screws 323a and 323b are tightened, and the distance is increased when the adjustment screws 323a and 323b are loosened. Each of the elongated holes 325a and 325b has a shape extending in the width direction, and the adjustment screws 323a and 323b and the inkjet head 310 can move in the width direction relative to the frame portion 320. These adjustment screws 323a and 323b and screw holes 313a and 313b constitute a distance adjustment mechanism.
　一方、固定ネジ３２４ａ～３２４ｃは、それぞれ、フレーム部３２０に設けられた孔部３２６ａ～３２６ｃと噛み合わされて嵌めこまれる。インクジェットヘッド３１０において、この固定ネジ３２４ａ～３２４ｃに対応する位置に溝等は設けられておらず、固定ネジ３２４ａ～３２４ｃの先端がフレーム部３２０のインクジェットヘッド３１０と対向する面から突出した長さだけフレーム部３２０とインクジェットヘッド３１０とが離隔することになる。なお、固定ネジ３２４ａ～３２４ｃは、長さの調整後に接着剤などで固定されてもよい。 On the other hand, the fixing screws 324a to 324c are engaged with and fitted into the hole portions 326a to 326c provided in the frame portion 320, respectively. In the inkjet head 310, no groove or the like is provided at a position corresponding to the fixing screws 324a to 324c, and the length of the tip of the fixing screws 324a to 324c protrudes from the surface of the frame portion 320 facing the inkjet head 310. The frame part 320 and the inkjet head 310 are separated from each other. The fixing screws 324a to 324c may be fixed with an adhesive or the like after the length is adjusted.
　ここで、上述のように、突起部３１２ａ、３１２ｂと、突起受け部３２２ａ、３２２ｂとは、お互いに対応する形状となっているが、突起受け部３２２ａ、３２２ｂの方が幅広く形成され、突起部３１２ａ、３１２ｂが嵌め込まれた状態で幅方向に所定の範囲で相対的に移動可能となっている。また、突起受け部３２２ａ、３２２ｂと、突起部３１２ａ、３１２ｂとに設けられた所定の傾斜角度を有する側面は、本実施形態のラインヘッド３０３では、記録媒体Ｍの幅方向に同一角度で傾斜しており、お互いに面で接触する構成となっている。そして、フレーム部３２０に設けられたプランジャー３２７ａ、３２７ｂにより、当該傾斜面の間の接触状態が保たれるように付勢されている。 Here, as described above, the protrusions 312a and 312b and the protrusion receivers 322a and 322b have shapes corresponding to each other, but the protrusion receivers 322a and 322b are formed wider, and the protrusions It is relatively movable within a predetermined range in the width direction in a state where 312a and 312b are fitted. Further, the side surfaces having a predetermined inclination angle provided on the protrusion receiving portions 322a and 322b and the protrusion portions 312a and 312b are inclined at the same angle in the width direction of the recording medium M in the line head 303 of the present embodiment. They are in contact with each other on the surface. And it is urged | biased by the plungers 327a and 327b provided in the frame part 320 so that the contact state between the said inclined surfaces may be maintained.
　図１７Ａ、図１７Ｂ及び図１７Ｃは、インクジェットヘッド３１０の位置調整方法を説明する図である。 FIG. 17A, FIG. 17B, and FIG. 17C are diagrams illustrating a method for adjusting the position of the inkjet head 310. FIG.
　図１７Ａに示すように、調整ネジ３２３ａが突起部３１２ａのねじ穴３１３ａに浅く噛み合わされている場合、上述のように、フレーム部３２０（突起受け部３２２ａ）とインクジェットヘッド３１０（突起部３１２ａ）の距離は、大きく離れる。この状態で、プランジャー３２７ａによりフレーム部３２０の突起受け部３２２ａにおける傾斜面とインクジェットヘッド３１０の突起部３１２ａにおける傾斜面とが接触するように付勢されることで、図１７Ａにおいて、フレーム部３２０は、インクジェットヘッド３１０に対して相対的に右寄りに位置することになる。 As shown in FIG. 17A, when the adjustment screw 323a is shallowly engaged with the screw hole 313a of the projection 312a, as described above, the frame 320 (projection receiving portion 322a) and the inkjet head 310 (projection 312a) The distance is far away. In this state, the plunger 327a urges the inclined surface of the protrusion receiving portion 322a of the frame portion 320 to come into contact with the inclined surface of the protruding portion 312a of the inkjet head 310, whereby the frame portion 320 in FIG. Is positioned to the right relative to the inkjet head 310.
　次いで、調整ネジ３２３ａをねじ穴３１３ａにねじ込んでいくにつれて、フレーム部３２０とインクジェットヘッド３１０の間の間隔が狭まっていく。プランジャー３２７ａにより突起受け部３２２ａの傾斜面と突起部３１２ａの傾斜面との接触状態は、保たれているので、突起受け部３２２ａと突起部３１２ａとの距離が縮まるにつれて、図１７Ｂ及び図１７Ｃにおいて、フレーム部３２０は、インクジェットヘッド３１０に対して相対的に左に移動する（インクジェットヘッド３１０は、フレーム部３２０に対して相対的に右に移動する）ことになる。 Next, as the adjustment screw 323a is screwed into the screw hole 313a, the interval between the frame portion 320 and the inkjet head 310 is narrowed. Since the contact state between the inclined surface of the protrusion receiving portion 322a and the inclined surface of the protruding portion 312a is maintained by the plunger 327a, as the distance between the protruding portion 322a and the protruding portion 312a decreases, FIGS. 17B and 17C. The frame part 320 moves to the left relative to the ink jet head 310 (the ink jet head 310 moves to the right relative to the frame part 320).
　本実施形態のラインヘッド３０３を組み立てる際には、フレーム部３２０とインクジェットヘッド３１０の位置関係を予めマーキング等で定めておき、カメラなどを用いてこのマーキングとフレーム部３２０及びインクジェットヘッド３１０の位置とを確認しながら調整ネジ３２３ａ、３２３ｂの回転量を調整することで、正確に幅方向の位置合わせを行うことが出来る。それから、固定ネジ３２４ａ～３２４ｃを孔部３２６ａ～３２６ｃと噛み合わせ、調整ネジ３２３ａ、３２３ｂにより規定されたフレーム部３２０とインクジェットヘッド３１０との距離と等しくなるように固定ネジ３２４ａ～３２４ｃの回転量を調整することで、インクジェットヘッド３１０が適切な位置でフレーム部３２０に固定される。 When assembling the line head 303 of this embodiment, the positional relationship between the frame unit 320 and the inkjet head 310 is determined in advance by marking or the like, and the markings and the positions of the frame unit 320 and the inkjet head 310 are determined using a camera or the like. By adjusting the amount of rotation of the adjustment screws 323a and 323b while confirming the above, it is possible to accurately perform alignment in the width direction. Then, the fixing screws 324a to 324c are engaged with the holes 326a to 326c, and the rotation amounts of the fixing screws 324a to 324c are set so as to be equal to the distance between the frame part 320 and the inkjet head 310 defined by the adjusting screws 323a and 323b. By adjusting, the inkjet head 310 is fixed to the frame part 320 at an appropriate position.
　なお、上述の位置調整がなされたラインヘッド３０３を用いて画像の形成を行う際、フレーム部３２０の位置を固定した状態では、インクジェットヘッド３１０のヘッドチップ３１１に係るノズル面と記録媒体Ｍとの距離が調整に応じて変化することになるが、この距離変化は、ノズルから吐出させるインクの速度やタイミングを適宜に制御することで調整することが可能である。 Note that when the image is formed using the line head 303 with the above-described position adjustment, in a state where the position of the frame unit 320 is fixed, the nozzle surface related to the head chip 311 of the inkjet head 310 and the recording medium M are arranged. Although the distance changes according to the adjustment, this change in distance can be adjusted by appropriately controlling the speed and timing of the ink ejected from the nozzles.
　以上のように、第３実施形態のラインヘッド３０３は、インクノズルが底面に配列されて設けられたインクジェットヘッド３１０が、この底面と略平行な反対側の面でフレーム部３２０に固定されている。そして、このインクジェットヘッド３１０のフレーム部３２０との固定面には突起部３１２ａ、３１２ｂが設けられ、フレーム部３２０のこのインクジェットヘッド３１０との対向面には、突起受け部３２２ａ、３２２ｂが設けられている。このように、インクジェットヘッド３１０とフレーム部３２０との取付用の構成を対向面内に対向させて設けることで、別途取付用のスペースを設けずにコンパクトにインクジェットヘッド３１０を配列することが出来る。 As described above, in the line head 303 of the third embodiment, the ink jet head 310 provided with the ink nozzles arranged on the bottom surface is fixed to the frame portion 320 on the opposite surface substantially parallel to the bottom surface. . Protrusions 312a and 312b are provided on the surface of the inkjet head 310 that is fixed to the frame portion 320, and projection receiving portions 322a and 322b are provided on the surface of the frame portion 320 that faces the inkjet head 310. Yes. In this manner, by providing the mounting structure for mounting the inkjet head 310 and the frame portion 320 so as to face each other in the opposing surface, the inkjet head 310 can be arranged in a compact manner without providing a separate mounting space.
　また、インクジェットヘッド３１０において、インクノズルが配列された底面とフレーム部３２０に固定される面とが反対側に配置されることで、側面には、一切構造物を設ける必要が無いので、更にコンパクトにインクジェットヘッド３１０を配列したラインヘッドを形成することが出来る。 Further, in the inkjet head 310, since the bottom surface on which the ink nozzles are arranged and the surface fixed to the frame part 320 are arranged on the opposite side, it is not necessary to provide any structure on the side surface, so that it is more compact. In addition, a line head in which the inkjet heads 310 are arranged can be formed.
　また、突起部３１２ａ、３１２ｂに幅方向へ傾斜する傾斜面を設けることで、インクジェットヘッド３１０とフレーム部３２０との間の距離と、幅方向のずれとを対応付けてインクジェットヘッド３１０の位置を調整することが出来るので、容易にインクジェットヘッド３１０の位置合わせを行うことが出来る。 Further, by providing the protrusions 312a and 312b with inclined surfaces that are inclined in the width direction, the distance between the ink jet head 310 and the frame portion 320 is associated with the deviation in the width direction to adjust the position of the ink jet head 310. Therefore, the inkjet head 310 can be easily aligned.
　また、特に、このインクジェットヘッド３１０の突起部３１２ａ、３１２ｂに設けられた傾斜面に対向するフレーム部３２０の突起受け部３２２ａ、３２２ｂの面を、当該傾斜面と同様の傾斜面とし、互いに接する形状とすることで、スムーズ且つ安定的に位置合わせに係る調整動作を行うことが出来る。 In particular, the surfaces of the projection receiving portions 322a and 322b of the frame portion 320 facing the inclined surfaces provided on the protruding portions 312a and 312b of the inkjet head 310 are the same inclined surfaces as the inclined surfaces, and are in contact with each other. By doing so, the adjustment operation related to the alignment can be performed smoothly and stably.
　また、特に、プランジャー３２７ａ、３２７ｂを用いて突起部３１２ａ、３１２ｂと、突起受け部３２２ａ、３２２ｂとの接触状態を維持させたまま、調整ネジ３２３ａ、３２３ｂにより一の傾斜面の他方との接触位置を調整するので、突起部３１２ａ、３１２ｂと突起受け部３２２ａ、３２２ｂとの間に設けられている隙間に関わらず、安定且つ確実にインクジェットヘッド３１０の位置の調整を行うことが出来る。 In particular, the adjustment screws 323a and 323b are brought into contact with the other of the one inclined surface while maintaining the contact state between the protrusions 312a and 312b and the protrusion receiving portions 322a and 322b using the plungers 327a and 327b. Since the position is adjusted, the position of the inkjet head 310 can be adjusted stably and reliably regardless of the gap provided between the protrusions 312a and 312b and the protrusion receiving portions 322a and 322b.
　また、フレーム部３２０のインクジェットヘッド３１０との接合面とは反対側に頭部が配置された調整ネジ３２３ａ、３２３ｂの回転ねじ込み量によってフレーム部３２０とインクジェットヘッド３１０との間の距離を変化させると、突起部３１２ａ及び突起受け部３２２ａの傾斜面同士の接触により、距離の変化に応じて幅方向の相対位置も変化する構成であるので、調整ネジ３２３ａ、３２３ｂのためにノズル面に平行な方向に余分な場所を必要とせず、且つ、ラインヘッド３０３の上部から容易且つ正確に位置の調整を行うことが出来る。 Further, when the distance between the frame unit 320 and the inkjet head 310 is changed by the amount of rotational screwing of the adjusting screws 323a and 323b whose heads are arranged on the opposite side of the joint surface of the frame unit 320 to the inkjet head 310, Since the relative positions in the width direction change according to the change in distance due to the contact between the inclined surfaces of the protrusion 312a and the protrusion receiving portion 322a, the direction parallel to the nozzle surface for the adjusting screws 323a and 323b. Therefore, the position can be adjusted easily and accurately from the top of the line head 303.
　また、インクジェットヘッド３１０が複数のヘッドチップ３１１を内蔵する構成であるので、ヘッドチップ３１１の組立で高精度に位置を定められる範囲については、まとめて一のインクジェットヘッド３１０として形成し、一のインクジェットヘッド３１０としての高精度な組立が難しい場合に、個別のインクジェットヘッド３１０を並列に配列して、上記の位置調整を行うことで、ラインヘッド３０３全体のノズル配列を高精度で行うことが可能になる。 In addition, since the inkjet head 310 is configured to incorporate a plurality of head chips 311, the range in which the position can be determined with high accuracy by assembling the head chip 311 is collectively formed as one inkjet head 310, and one inkjet When it is difficult to assemble the head 310 with high accuracy, it is possible to arrange the nozzles of the entire line head 303 with high accuracy by arranging the individual inkjet heads 310 in parallel and performing the above-described position adjustment. Become.
　また、複数のインクジェットヘッド３１０の間に弾性部材３４０を設けることで、ラインヘッド３０３の組立の際に、隣接するインクジェットヘッド３１０同士での衝突などによる破損を防ぐと共に、ラインヘッド３０３の組立後には、当該弾性部材３４０により隣接するインクジェットヘッド３１０同士の間隔をより安定的に維持する効果を得ることが出来る。 In addition, by providing the elastic member 340 between the plurality of ink jet heads 310, when the line head 303 is assembled, damage due to collision between adjacent ink jet heads 310 is prevented, and after the line head 303 is assembled, In addition, the elastic member 340 can obtain an effect of maintaining the interval between the adjacent inkjet heads 310 more stably.
［第４実施形態］
　次に、第４実施形態のラインヘッド３０３ａについて説明する。
　図１８は、第４実施形態のラインヘッド３０３ａのうち、一のインクジェットヘッド３１０ａに係る部分を拡大して示した斜視図である。 [Fourth Embodiment]
Next, the line head 303a of 4th Embodiment is demonstrated.
FIG. 18 is an enlarged perspective view showing a portion related to one inkjet head 310a in the line head 303a of the fourth embodiment.
　第４実施形態のラインヘッド３０３ａのインクジェットヘッド３１０ａには、第３実施形態のインクジェットヘッド３１０における突起部３１２ａ、３１２ｂの代わりに異なる形状の突起部３１８ａ、３１８ｂが設けられている。また、フレーム部３２０ａには、テーパーピン３２９ａ、３２９ｂ（先細ピン）が設けられ、突起部３１８ａ、３１８ｂに対応した突起受け部３２８ａ、３２８ｂが第３実施形態のフレーム部３２０における突起受け部３２２ａ、３２２ｂの代わりに設けられている。その他の構成は、第３実施形態のラインヘッド３０３と第４実施形態のラインヘッド３０３ａにおいて同一であり、同一の符号を付して説明を省略する。 The inkjet head 310a of the line head 303a of the fourth embodiment is provided with projections 318a and 318b having different shapes instead of the projections 312a and 312b of the inkjet head 310 of the third embodiment. The frame portion 320a is provided with taper pins 329a and 329b (tapered pins), and the protrusion receiving portions 328a and 328b corresponding to the protrusion portions 318a and 318b are the protrusion receiving portions 322a and 322a in the frame portion 320 of the third embodiment. It is provided instead of 322b. Other configurations are the same in the line head 303 of the third embodiment and the line head 303a of the fourth embodiment, and the same reference numerals are given and description thereof is omitted.
　図１９は、第４実施形態のラインヘッド３０３ａの側面図である。 FIG. 19 is a side view of the line head 303a of the fourth embodiment.
　本実施形態のラインヘッド３０３ａにおいて、フレーム部３２０ａの突起受け部３２８ａ及びインクジェットヘッド３１０ａの突起部３１８ａには、傾斜面は設けられていない。その一方で、突起部３１８ａには、階段部分が設けられている。突起部３１８ａの幅方向の幅は、突起受け部３２８ａの幅よりも狭く、幅方向に位置の移動調整が可能となっている。 In the line head 303a of the present embodiment, the projection receiving portion 328a of the frame portion 320a and the projection portion 318a of the inkjet head 310a are not provided with inclined surfaces. On the other hand, the protrusion 318a is provided with a stepped portion. The width in the width direction of the protrusion 318a is narrower than the width of the protrusion receiving portion 328a, and the movement of the position in the width direction can be adjusted.
　テーパーピン３２９ａ、３２９ｂは、先端部分がテーパー形状となっているピンであり、フレーム部３２０ａの突起受け部３２８ａ、３２８ｂの位置に設けられた孔部と噛み合っている。そして、このテーパーピン３２９ａ、３２９ｂは、フレーム部３２０ａに対して上下移動されて、適宜な位置に設定することが可能となっている。このテーパーピン３２９ａ、３２９ｂの頭部が位置調整部を構成する。 The taper pins 329a and 329b are pins whose tip portions are tapered, and mesh with holes provided at the positions of the projection receiving portions 328a and 328b of the frame portion 320a. The taper pins 329a and 329b are moved up and down with respect to the frame portion 320a and can be set at appropriate positions. The heads of the taper pins 329a and 329b constitute a position adjusting unit.
　テーパーピン３２９ａ、３２９ｂは、そのテーパー形状部分が突起部３１８ａ、３１８ｂの階段部分の角と接するように配置されている。テーパーピン３２９ａ、３２９ｂをフレーム部３２０ａの孔部に深く挿入すると、突起部３１８ａ、３１８ｂに対するテーパーピン３２９ａ、３２９ｂの接触位置が変化し、テーパー形状部分の根元に近くなる。これにより、図１９において、テーパーピン３２９ａ、３２９ｂの軸位置が左に移動し、併せて、フレーム部３２０ａがインクジェットヘッド３１０ａに対して左に移動する。一方、テーパーピン３２９ａ、３２９ｂをフレーム部３２０ａから抜き出すと、テーパーピン３２９ａ、３２９ｂの突起部３１８ａ、３１８ｂとの接触位置は、テーパー形状部分の先端方向に変化する。これにより、図１９において、テーパーピン３２９ａ、３２９ｂの回転軸が右に移動し、併せてフレーム部３２０ａがインクジェットヘッド３１０ａに対して右に移動する。 The tapered pins 329a and 329b are arranged so that the tapered portions thereof are in contact with the corners of the stepped portions of the projecting portions 318a and 318b. When the taper pins 329a and 329b are inserted deeply into the holes of the frame part 320a, the contact positions of the taper pins 329a and 329b with respect to the protrusions 318a and 318b change, and become closer to the base of the tapered portion. Thereby, in FIG. 19, the axial positions of the taper pins 329a and 329b are moved to the left, and the frame portion 320a is moved to the left with respect to the inkjet head 310a. On the other hand, when the taper pins 329a and 329b are extracted from the frame portion 320a, the contact positions of the taper pins 329a and 329b with the protrusions 318a and 318b change in the tip direction of the tapered portion. Accordingly, in FIG. 19, the rotation shafts of the taper pins 329a and 329b move to the right, and the frame part 320a moves to the right with respect to the inkjet head 310a.
　本実施形態のラインヘッド３０３ａを組み立てる際には、フレーム部３２０ａとインクジェットヘッド３１０ａの位置関係を予めマーキング等で定めておき、先ず、調整ネジ３２３ａ、３２３ｂによりフレーム部３２０ａとインクジェットヘッド３１０ａを幅方向に移動可能な状態で仮留めする。次いで、カメラなどを用いてこのマーキングとフレーム部３２０ａ及びインクジェットヘッド３１０ａの位置とを確認しながらテーパーピン３２９ａ、３２９ｂの挿入量を調整することで、正確に幅方向の位置合わせを行うことが出来る。それから、調整ネジ３２３ａ、３２３ｂを締めてフレーム部３２０ａとインクジェットヘッド３１０ａとを固定した後、固定ネジ３２４ａ～３２４ｃを孔部３２６ａ～３２６ｃと噛み合せ、フレーム部３２０とインクジェットヘッド３１０との距離と等しくなるように固定ネジ３２４ａ～３２４ｃの回転量を調整する。 When assembling the line head 303a of the present embodiment, the positional relationship between the frame portion 320a and the inkjet head 310a is determined in advance by marking or the like. First, the frame portion 320a and the inkjet head 310a are moved in the width direction by adjusting screws 323a and 323b. Temporarily fix in a movable state. Next, by adjusting the amount of insertion of the taper pins 329a and 329b while confirming this marking and the positions of the frame portion 320a and the inkjet head 310a using a camera or the like, the alignment in the width direction can be accurately performed. . Then, the adjustment screws 323a and 323b are tightened to fix the frame portion 320a and the inkjet head 310a, and then the fixing screws 324a to 324c are engaged with the hole portions 326a to 326c so that the distance between the frame portion 320 and the inkjet head 310 becomes equal. In this manner, the amount of rotation of the fixing screws 324a to 324c is adjusted.
　以上のように、第４実施形態のラインヘッド３０３ａは、突起部３１８ａ、３１８ｂに対してテーパー形状の部分が接するテーパーピン３２９ａ、３２９ｂが設けられている。そして、このテーパーピン３２９ａ、３２９ｂの頭部がフレーム部３２０ａのインクジェットヘッド３１０ａとの接合面とは反対側の面に来るように配置され、この頭部を回転させることで、テーパーピン３２９ａ、３２９ｂのテーパー形状部分の突起部３１８ａ、３１８ｂとの接触位置が変化することで、容易にフレーム部３２０ａとインクジェットヘッド３１０ａとの位置関係を変化させることが出来る。従って、ノズルの配置面方向に余分なスペースを必要とせず、且つ、容易に調整動作を行うことが可能な配置で高精度なインクジェットヘッド３１０ａの位置調整を行うことが出来る。 As described above, the line head 303a according to the fourth embodiment is provided with the tapered pins 329a and 329b in which the tapered portions are in contact with the protrusions 318a and 318b. The taper pins 329a and 329b are arranged so that the heads of the taper pins 329a and 329b are located on the surface of the frame part 320a opposite to the joint surface with the ink jet head 310a. By rotating the heads, the taper pins 329a and 329b are arranged. The positional relationship between the frame portion 320a and the inkjet head 310a can be easily changed by changing the contact position of the taper-shaped portion with the projections 318a and 318b. Accordingly, it is possible to adjust the position of the inkjet head 310a with high accuracy in an arrangement that does not require an extra space in the nozzle arrangement surface direction and can be easily adjusted.
　また、特に、このようなテーパーピン３２９ａ、３２９ｂを用いて上下方向に位置を移動させることで、フレーム部３２０ａとインクジェットヘッド３１０ａとの相対位置を幅方向に高精度で調整することが可能なので、複雑な構成を必要とせずに容易にインクジェットヘッド３１０ａの位置調整を行うことが出来る。 In particular, the relative position between the frame part 320a and the inkjet head 310a can be adjusted with high accuracy in the width direction by moving the position in the vertical direction using the taper pins 329a and 329b. The position of the inkjet head 310a can be easily adjusted without requiring a complicated configuration.
　なお、本発明は、上記第３、第４実施形態に限られるものではなく、様々な変更が可能である。
　例えば、上記実施の形態では、インクジェットヘッド３１０に突起部３１２ａ、３１２ｂを設け、フレーム部３２０に突起受け部３２２ａ、３２２ｂを設けたが、反対にインクジェットヘッド３１０に突起受け部、フレーム部３２０に突起部を設ける構成であってもよい。 The present invention is not limited to the third and fourth embodiments described above, and various modifications can be made.
For example, in the above embodiment, the protrusions 312a and 312b are provided on the ink jet head 310 and the protrusion receiving portions 322a and 322b are provided on the frame part 320. On the contrary, the protrusion receiving part and the frame part 320 protrude on the ink jet head 310. The structure which provides a part may be sufficient.
　また、上記実施の形態では、枠状のフレーム部３２０を支持部材として例に挙げて説明したが、その他の形状、例えば、幅の広い板状の支持部材であってもよい。 In the above embodiment, the frame-shaped frame portion 320 is described as an example of the support member. However, other shapes, for example, a wide plate-like support member may be used.
　また、上記実施の形態では、インクジェットヘッド３１０、３１０ａにおいて、ノズル面とフレーム部３２０への固定面とが反対側となるように配置したが、その他の位置関係、例えば、これらの面が隣接する（例えば、直交する）面であってもよい。このような配置であっても、フレーム部３２０とインクジェットヘッド３１０、３１０ａの占めるスペース以外に余分なスペースを必要としない。また、インクジェットヘッド３１０、３１０ａは、ノズル面とフレーム部３２０への固定面とが平行となるように形成されたものでなくてもよい。また、フレーム部３２０は、枠状の形状に限られず、梯子形状や一本の柱状部材に櫛歯が設けられたような形状であっても良い。 Further, in the above-described embodiment, the inkjet heads 310 and 310a are arranged so that the nozzle surface and the fixed surface to the frame part 320 are opposite to each other, but other positional relationships, for example, these surfaces are adjacent to each other. It may be a plane (for example, orthogonal). Even with such an arrangement, no extra space is required in addition to the space occupied by the frame portion 320 and the inkjet heads 310 and 310a. Further, the inkjet heads 310 and 310a may not be formed such that the nozzle surface and the surface fixed to the frame unit 320 are parallel to each other. The frame portion 320 is not limited to a frame shape, and may be a ladder shape or a shape in which comb teeth are provided on one columnar member.
　第３実施形態のラインヘッド３０３において、インクジェットヘッド３１０の一の面に設けられた突起部３１２ａ、３１２ｂ及びこれを受けるフレーム部３２０の突起受け部３２２ａ、３２２ｂは、それぞれ、インクジェットヘッド３１０とフレーム部３２０とが対向する面に対して傾斜した一つの面と垂直な三つの面とで構成される形状としたが、２以上の面が傾斜していてもよい。この場合、少なくとも一つ傾斜面同士が接触し、当該傾斜面同士の相対位置関係によりインクジェットヘッド３１０の位置が調整されればよい。例えば、図１６Ａにおいて、突起部３１２ａ、３１２ｂ及び突起受け部３２２ａ、３２２ｂをそれぞれねじ穴３１３ａ、３１３ｂ及び長穴３２５ａ、３２５ｂに対して対称に傾斜面を有する形状に形成し、どちらの傾斜面で接触させることも可能としてもよい。或いは、インクジェットヘッド３１０とフレーム部３２０のそれぞれにおいて、２の傾斜面が同間隔で並行に設けられ、両面で接触状態が維持されてもよい。また、突起部３１２ａ、３１２ｂの先端ほど幅が狭くなる形状に限られず、反対に、先端ほど幅が広い形状であってもよい。 In the line head 303 of the third embodiment, the protrusions 312a and 312b provided on one surface of the ink jet head 310 and the protrusion receiving parts 322a and 322b of the frame part 320 that receives the protrusions 312a and 312b are respectively the ink jet head 310 and the frame part. The shape is composed of one surface inclined with respect to the surface facing 320 and three surfaces perpendicular to each other, but two or more surfaces may be inclined. In this case, at least one inclined surface is in contact with each other, and the position of the inkjet head 310 may be adjusted by the relative positional relationship between the inclined surfaces. For example, in FIG. 16A, the protrusions 312a and 312b and the protrusion receiving parts 322a and 322b are formed in a shape having inclined surfaces symmetrically with respect to the screw holes 313a and 313b and the long holes 325a and 325b, respectively. It may be possible to make it contact. Alternatively, in each of the inkjet head 310 and the frame unit 320, two inclined surfaces may be provided in parallel at the same interval, and the contact state may be maintained on both surfaces. Moreover, it is not restricted to the shape where a width | variety becomes narrow as the front-end | tip of projection part 312a, 312b, and a shape where a width | variety is wide as the front-end | tip may be conversely.
　また、上記第３実施形態では、突起部３１２ａ、３１２ｂ及び突起受け部３２２ａ、３２２ｂの形状が幅方向に傾斜を持つものであることについて説明したが、幅方向だけではなく、記録媒体Ｍの搬送方向にも傾斜を持たせて位置の調整を可能としてもよい。 In the third embodiment, it has been described that the shapes of the protrusions 312a and 312b and the protrusion receiving portions 322a and 322b are inclined in the width direction. However, not only the width direction but also the conveyance of the recording medium M is performed. The position may be adjusted by providing an inclination to the direction.
　また、上記第３実施形態では、突起部３１２ａ、３１２ｂ及び突起受け部３２２ａ、３２２ｂの両者が対向する傾斜面を有するものとして説明したが、何れか一方のみが傾斜面を持ち、他方は単純な凹部又は凸部であっても良い。当該凹部又は凸部の端部が傾斜面と接触する位置を変化させることで、同様に確実且つ高精度な位置の調整を行うことが出来る。 In the third embodiment, the protrusions 312a and 312b and the protrusion receiving parts 322a and 322b are described as having an inclined surface. However, only one of them has an inclined surface and the other is simple. A concave or convex portion may be used. By changing the position at which the end of the concave portion or convex portion contacts the inclined surface, the position can be adjusted with certainty and high accuracy.
　また、上記第４実施形態では、テーパーピン３２９ａ、３２９ｂを用いて突起部３１８ａ、３１８ｂの階段状部分の角と接触させる場合を例に挙げて説明したが、接触部分は階段状ではなくてもよく、また、テーパーピンは、幅方向にのみ先細の形状を有する先細ピンであっても良い。或いは、先端が平坦なネジを傾斜面に接触させる形態であってもよい。また、この場合、ネジをフレーム部３２０とインクジェットヘッド３１０との対向面に垂直に設けるのではなく、傾斜面に垂直になるように斜めに設けることとしてもよい。 In the fourth embodiment, the case where the taper pins 329a and 329b are used to contact the corners of the stepped portions of the protrusions 318a and 318b has been described as an example, but the contact portions may not be stepped. In addition, the tapered pin may be a tapered pin having a tapered shape only in the width direction. Alternatively, the screw having a flat tip may be in contact with the inclined surface. Further, in this case, the screw may be provided obliquely so as to be perpendicular to the inclined surface, instead of being provided perpendicular to the facing surface between the frame part 320 and the inkjet head 310.
　また、上記実施の形態では、インクジェットヘッド３１０の間に弾性部材３４０を設けることとしたが、本発明に係るラインヘッドでは、弾性部材がなくても高精度且つ省スペースでインクジェットヘッド３１０を配列することが出来る。 In the above embodiment, the elastic member 340 is provided between the ink jet heads 310. However, in the line head according to the present invention, the ink jet heads 310 are arranged with high accuracy and space saving even without the elastic member. I can do it.
　また、上記実施の形態では、一のラインヘッドを配置して画像の形成を行うこととしたが、図２０に示すように、回転ドラム３０１による記録媒体Ｍの搬送方向に複数のラインヘッド３０３、３０４、３０５、３０６を配列することが出来る。この場合、各ラインヘッド３０３～３０６で異なる色のインク、例えば、ＹＭＣＫの４色を吐出可能とすることで、カラー画像の形成を行うことが出来る。 In the above embodiment, one line head is arranged to form an image. However, as shown in FIG. 20, a plurality of line heads 303 are arranged in the conveyance direction of the recording medium M by the rotary drum 301. 304, 305, and 306 can be arranged. In this case, it is possible to form a color image by enabling each line head 303 to 306 to eject different colors of ink, for example, four colors of YMCK.
　また、上記実施の形態では、複数のヘッドチップを内蔵するインクジェットヘッド３１０を幅方向に一列に配列させたが、一つのインクジェットヘッドが一つのヘッドチップと対応してもよい。また、インクジェットヘッドの配列は、一列ではなく、複数列であったり、千鳥格子状の配列であったりしてもよい。 In the above embodiment, the inkjet heads 310 incorporating a plurality of head chips are arranged in a line in the width direction, but one inkjet head may correspond to one head chip. In addition, the arrangement of the ink jet heads may be a plurality of lines or a staggered pattern instead of a single line.
　また、インクジェットヘッド３１０、３１０ａにおける筐体３３０の下端位置と、ヘッドチップ３１１のノズル面の位置との上下関係は、適宜に設定可能である。即ち、両者を等しい高さに配置することとしても良いし、ノズル面を筐体３３０の下端から突出させたり、筐体３３０の内部に留めたりする配置としても良い。 In addition, the vertical relationship between the lower end position of the housing 330 in the inkjet heads 310 and 310a and the position of the nozzle surface of the head chip 311 can be set as appropriate. That is, it is good also as arrange | positioning both at equal height, and it is good also as an arrangement | positioning which makes a nozzle surface protrude from the lower end of the housing | casing 330, or fastens inside the housing | casing 330. FIG.
　また、上記実施の形態では、固定ネジ３２４ａ～３２４ｃを用いてより確実にインクジェットヘッド３１０、３１０ａとフレーム部３２０、３２０ａとの距離を設定する構成について説明したが、調整ネジ３２３ａ、３２３ｂ、又は、テーパーピン３２９ａ、３２９ｂのみで距離を設定することも可能である。 In the above-described embodiment, the configuration in which the distance between the inkjet heads 310 and 310a and the frame portions 320 and 320a is more reliably set using the fixing screws 324a to 324c has been described. However, the adjustment screws 323a and 323b or It is also possible to set the distance only with the taper pins 329a and 329b.
　また、上記実施の形態では、ラインヘッド３０３、３０３ａを１パス描画方式のインクジェット記録装置に用いるものとして説明したが、複数のインクジェットヘッドがフレーム部３２０、３２０ａに取り付けられる形状のものであれば、１パス描画方式に限られない。 In the above embodiment, the line heads 303 and 303a have been described as being used in a one-pass drawing type ink jet recording apparatus. However, as long as a plurality of ink jet heads are attached to the frame portions 320 and 320a, It is not limited to the one-pass drawing method.
　その他、上記第１～第４の実施形態で示した具体的な構成や配置などの細部は、本発明の趣旨を逸脱しない範囲において適宜変更可能である。
　加えて、今回開示された実施形態は、全ての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。 In addition, details such as specific configurations and arrangements shown in the first to fourth embodiments can be changed as appropriate without departing from the spirit of the present invention.
In addition, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
産業上の利用の可能性Industrial applicability
　本発明は、インクを吐出するインクジェットヘッド及びラインヘッドに利用することが出来る。 The present invention can be used for an ink jet head and a line head for discharging ink.
１１０ インクジェットヘッド
１１１ インクジェットヘッドエレメント
１１１ａ      ヘッドチップ
１１１ｂ      インクリザーバー
１１２ａ、１１２ｂ   インク流路
１１２ｃ      溝部
１１３ 共通インクバッファー
１１５ 弾性部材
１２０ 基準プレート
１２１ 切欠部
１２２ａ、１２２ｂ   空隙部
１５０ 押さえプレート
１５２ ネジ穴
１５３ ネジ
２００ インクジェット記録装置
２０３～２０６       ラインヘッド
２１０、２１０ａ     インクジェットヘッド
２１１ ヘッドチップ
２２０ フレーム部
２２３ 溝部
２３０ 筐体
２３０ａ      下端部
２３０ｂ      上端部
２３１ 大寸法部
２３２ 小寸法部
３０３～３０６、３０３ａ    ラインヘッド
３１０、３１０ａ     インクジェットヘッド
３１１ ヘッドチップ
３１２ａ、３１２ｂ   突起部
３１３ａ、３１３ｂ   ねじ穴
３１８ａ、３１８ｂ   突起部
３２０、３２０ａ     フレーム部
３２２ａ、３２２ｂ   突起受け部
３２３ａ、３２３ｂ   調整ネジ
３２５ａ、３２５ｂ   長穴
３２８ａ、３２８ｂ   突起受け部
３２９ａ、３２９ｂ   テーパーピン
３３０ 筐体
３４０ 弾性部材
ａ１   突起部
ｂ１   突起部
ｃ１   開口部
Ｍ     記録媒体 110 Inkjet head 111 Inkjet head element 111a Head chip 111b Ink reservoir 112a, 112b Ink channel 112c Groove 113 Common ink buffer 115 Elastic member 120 Reference plate 121 Notch 122a, 122b Gap 150 Presser plate 152 Screw hole 153 Screw 200 Inkjet recording Devices 203 to 206 Line heads 210 and 210a Inkjet head 211 Head chip 220 Frame portion 223 Groove portion 230 Housing 230a Lower end portion 230b Upper end portion 231 Large dimension portion 232 Small dimension portions 303 to 306, 303a Line heads 310 and 310a Inkjet head 311 head Chips 312a and 312b Protrusions 313a and 313b Screw hole 318a, 318b Protruding part 320, 320a Frame part 322a, 322b Protrusion receiving part 323a, 323b Adjusting screw 325a, 325b Slotted hole 328a, 328b Protrusion receiving part 329a, 329b Taper pin 330 Housing 340 Elastic member a1 Protruding part b1 Protruding Part c1 opening M recording medium

Claims (32)

  1. 　インクを吐出する複数のインクノズルが配列されたインクジェットヘッドエレメントを複数配列したインクジェットヘッドにおいて、
    　前記複数のインクジェットヘッドエレメントは、ヘッド保持部材と嵌合で各々保持され、
    　前記ヘッド保持部材には、前記複数のインクジェットヘッドエレメントの位置及び／又は姿勢を調整するための変形が可能な変形部が各々設けられている
    　ことを特徴とするインクジェットヘッド。     In an inkjet head in which a plurality of inkjet head elements in which a plurality of ink nozzles that eject ink are arranged are arranged,
    The plurality of inkjet head elements are each held by fitting with a head holding member,
    An ink jet head, wherein the head holding member is provided with a deformable portion that can be deformed to adjust positions and / or postures of the plurality of ink jet head elements.
  2. 　前記インクジェットヘッドエレメントの位置及び／又は姿勢の変更に係る前記調整の量を定める調整機構を備える
    　ことを特徴とする請求項１記載のインクジェットヘッド。     The inkjet head according to claim 1, further comprising an adjustment mechanism that determines an amount of the adjustment related to a change in position and / or attitude of the inkjet head element.
  3. 　前記ヘッド保持部材に固定されるヘッド調整部材を備え、
    　前記調整機構は、前記ヘッド調整部材に設けられている
    　ことを特徴とする請求項２記載のインクジェットヘッド。     A head adjustment member fixed to the head holding member;
    The inkjet head according to claim 2, wherein the adjustment mechanism is provided on the head adjustment member.
  4. 　前記ヘッド保持部材には、前記複数のインクジェットヘッドエレメントを各々嵌合される位置へ導入するための複数の切欠部が設けられており、
    　前記ヘッド調整部材は、前記インクジェットヘッドエレメントが嵌合された前記切欠部の開放端を塞ぐように前記ヘッド保持部材に固定される
    　ことを特徴とする請求項３記載のインクジェットヘッド。     The head holding member is provided with a plurality of notches for introducing the plurality of inkjet head elements to positions where they are respectively fitted.
    The inkjet head according to claim 3, wherein the head adjustment member is fixed to the head holding member so as to close an open end of the cutout portion into which the inkjet head element is fitted.
  5. 　前記調整機構は、前記調整の量に応じて前記インクジェットヘッドエレメントを前記変形部に押し込む複数の押し込み部を有する
    　ことを特徴とする請求項２～４の何れか一項に記載のインクジェットヘッド。     The inkjet head according to any one of claims 2 to 4, wherein the adjustment mechanism includes a plurality of pushing portions that push the inkjet head element into the deformable portion according to the amount of adjustment.
  6. 　前記ヘッド保持部材には、前記変形部の前記インクジェットヘッドエレメントとの接触面と反対側に、所定の幅の空隙が設けられていることを特徴とする請求項５記載のインクジェットヘッド。 6. The ink jet head according to claim 5, wherein the head holding member is provided with a gap having a predetermined width on a side opposite to a contact surface of the deformable portion with the ink jet head element.
  7. 　前記ヘッド保持部材には、前記複数のインクジェットヘッドエレメントが二列のヘッド列に配列され、
    　前記調整機構は、当該複数のインクジェットヘッドエレメントのそれぞれに対し、当該インクジェットヘッドエレメントと、隣接する他の前記インクジェットヘッドエレメントとの間以外の位置に設けられている
    　ことを特徴とする請求項２～６の何れか一項に記載のインクジェットヘッド。     In the head holding member, the plurality of inkjet head elements are arranged in two head rows,
    The adjustment mechanism is provided for each of the plurality of inkjet head elements at a position other than between the inkjet head element and another adjacent inkjet head element. The inkjet head according to any one of 6.
  8. 　二列の前記ヘッド列は、平行して設けられ、
    　前記調整機構は、前記複数のインクジェットヘッドエレメントのそれぞれに対し、前記ヘッド列と直交する方向であって一方の前記ヘッド列の前記インクジェットヘッドエレメントと、他方の前記ヘッド列の前記インクジェットヘッドエレメントとが対向する側とは反対の側に設けられる
    　ことを特徴とする請求項７記載のインクジェットヘッド。     Two rows of the head rows are provided in parallel,
    The adjusting mechanism is configured such that, for each of the plurality of inkjet head elements, the inkjet head element of one of the head rows and the inkjet head element of the other head row are orthogonal to the head row. The inkjet head according to claim 7, wherein the inkjet head is provided on a side opposite to the facing side.
  9. 　前記インクジェットヘッドエレメントは、
    　前記複数のインクノズルからインクを吐出させるためのインクを蓄えるインクリザーバーを備え、
    　前記インクリザーバーには、溝部が設けられ、
    　当該溝部が前記ヘッド保持部材と嵌合する
    　ことを特徴とする請求項１～８の何れか一項に記載のインクジェットヘッド。     The inkjet head element is
    An ink reservoir for storing ink for discharging ink from the plurality of ink nozzles;
    The ink reservoir is provided with a groove,
    The inkjet head according to any one of claims 1 to 8, wherein the groove portion is fitted to the head holding member.
  10. 　前記インクリザーバーの各々にインクを供給する共通流路部材を備え、
    　前記インクリザーバーには、それぞれ外部と連通するインク流路が設けられ、
    　前記共通流路部材は、当該インク流路を覆うように設けられ、前記インク流路を介して前記インクリザーバーにインクを供給する
    　ことを特徴とする請求項９記載のインクジェットヘッド。     A common flow path member for supplying ink to each of the ink reservoirs;
    Each ink reservoir is provided with an ink flow path communicating with the outside.
    The inkjet head according to claim 9, wherein the common flow path member is provided so as to cover the ink flow path, and supplies ink to the ink reservoir via the ink flow path.
  11. 　前記共通流路部材は、前記複数のインクリザーバーに各々対応する複数のブロックに区分され、当該複数のブロックは、隣接する他のブロックとそれぞれ壁面に設けられた開口同士で連通していることを特徴とする請求項１０記載のインクジェットヘッド。 The common flow path member is divided into a plurality of blocks respectively corresponding to the plurality of ink reservoirs, and the plurality of blocks communicate with other adjacent blocks through openings provided on the respective wall surfaces. The ink-jet head according to claim 10.
  12. 　前記インクリザーバーに設けられた前記インク流路は、当該インクリザーバーから外側に突起した形状を有し、
    　当該突起形状部分と前記共通流路部材との隙間は、弾性部材により充填されている
    　ことを特徴とする請求項１０又は１１記載のインクジェットヘッド。     The ink flow path provided in the ink reservoir has a shape protruding outward from the ink reservoir,
    The inkjet head according to claim 10 or 11, wherein a gap between the protrusion-shaped portion and the common flow path member is filled with an elastic member.
  13. 　液滴を吐出する複数のノズル孔が形成されたノズル基板を具備するインクジェットヘッドにおいて、
    　前記ノズル基板が一端部に取り付け固定されるとともに、内側に当該インクジェットヘッドを構成する構成部品が配置された筐体を備え、
    　前記筐体の前記ノズル基板が取り付け固定された一端部側と反対となる他端部側は、前記一端部側から前記他端部側に亘る一方向に略直交する断面の寸法が前記一端部側の前記一方向に略直交する断面の寸法よりも小さく形成され、
    　前記他端部側の外面に当該インクジェットヘッドを支持する支持体に取り付けられる支持体取付部が設けられていることを特徴とするインクジェットヘッド。     In an inkjet head comprising a nozzle substrate in which a plurality of nozzle holes for discharging droplets are formed,
    The nozzle substrate is attached and fixed to one end portion, and includes a housing in which components constituting the inkjet head are arranged on the inside.
    The other end side of the housing opposite to the one end side to which the nozzle substrate is mounted and fixed has a cross-sectional dimension that is substantially perpendicular to one direction from the one end side to the other end side. Formed smaller than the dimension of the cross section substantially perpendicular to the one direction on the side,
    An inkjet head characterized in that a support attachment portion attached to a support supporting the inkjet head is provided on the outer surface on the other end side.
  14. 　前記筐体は、
    　前記一端部側に設けられ、前記一方向に略直交する断面の寸法が前記一方向に沿って略等しい大寸法部と、
    　前記他端部側に設けられ、前記一方向に略直交する断面の寸法が前記大寸法部よりも小さく、且つ、前記一方向に略直交する断面の寸法が前記一方向に沿って略等しい小寸法部と、を有し、
    　前記小寸法部の外面に前記支持体取付部が設けられていることを特徴とする請求項１３に記載のインクジェットヘッド。     The housing is
    A large-sized portion provided on the one end side and having a cross-sectional dimension substantially equal to the one direction and substantially equal along the one direction;
    Provided on the other end side, the cross-sectional dimension approximately perpendicular to the one direction is smaller than the large dimension part, and the cross-sectional dimension approximately orthogonal to the one direction is substantially equal along the one direction. A dimension part, and
    The inkjet head according to claim 13, wherein the support attachment portion is provided on an outer surface of the small dimension portion.
  15. 　前記支持体取付部は、前記他端部側の外面から突出した突起部を有し、
    　前記突起部が前記支持体に設けられた溝部と係合することで、当該インクジェットヘッドを所定方向に位置決めすることを特徴とする請求項１３又は１４に記載のインクジェットヘッド。     The support attachment portion has a protrusion protruding from the outer surface on the other end side,
    15. The ink jet head according to claim 13, wherein the ink jet head is positioned in a predetermined direction by engaging the protrusion with a groove provided on the support.
  16. 　前記支持体には、所定方向に沿って配設される複数のインクジェットヘッドの各々の前記突起部に対応させて前記溝部が複数設けられ、
    　前記複数の溝部に前記複数の突起部が係合することで、前記複数のインクジェットヘッドをその並び方向に位置決めすることを特徴とする請求項１５に記載のインクジェットヘッド。     The support is provided with a plurality of the groove portions corresponding to the protrusions of the plurality of inkjet heads arranged along a predetermined direction,
    The inkjet head according to claim 15, wherein the plurality of protrusions are engaged with the plurality of grooves to position the plurality of inkjet heads in an arrangement direction thereof.
  17. 　前記支持体に前記支持体取付部が取り付けられることで、当該インクジェットヘッドを所定方向に位置決めする第１位置決め機構部を更に備えることを特徴とする請求項１３又は１４に記載のインクジェットヘッド。 The inkjet head according to claim 13 or 14, further comprising a first positioning mechanism portion that positions the inkjet head in a predetermined direction by attaching the support attachment portion to the support.
  18. 　前記支持体には、所定方向に沿って配設される複数のインクジェットヘッドの各々の前記支持体取付部が取付けられ、
    　前記筐体の当該インクジェットヘッドと隣合うインクジェットヘッドと対向する面に、前記複数のインクジェットヘッドを所定方向に位置決めする第２位置決め機構部を更に備えることを特徴とする請求項１３又は１４に記載のインクジェットヘッド。     The support body is attached with the support body mounting portion of each of a plurality of inkjet heads arranged along a predetermined direction.
    The surface of the said housing | casing facing the inkjet head adjacent to the said inkjet head is further equipped with the 2nd positioning mechanism part which positions these inkjet heads in a predetermined direction, The Claim 13 or 14 characterized by the above-mentioned. Inkjet head.
  19. 　前記第２位置決め機構部は、互いに係合する凸部及び凹部を有し、
    　前記複数のインクジェットヘッドのうち、一方のインクジェットヘッドの前記筐体の他方のインクジェットヘッドと対向する面に前記凸部が設けられ、他方のインクジェットヘッドの前記筐体の一方のインクジェットヘッドと対向する面に前記凹部が設けられていることを特徴とする請求項１８に記載のインクジェットヘッド。     The second positioning mechanism portion has a convex portion and a concave portion that engage with each other,
    Of the plurality of inkjet heads, the convex portion is provided on a surface of the casing of one inkjet head facing the other inkjet head, and the surface of the casing of the other inkjet head facing the inkjet head of one of the casings. The inkjet head according to claim 18, wherein the recess is provided in the inkjet head.
  20. 　前記ノズル基板は、複数個が千鳥状に配置されてなることを特徴とする請求項１３～１９の何れか一項に記載のインクジェットヘッド。 The inkjet head according to any one of claims 13 to 19, wherein a plurality of the nozzle substrates are arranged in a staggered manner.
  21. 　請求項１３～２０の何れか一項に記載のインクジェットヘッドが所定方向に沿って前記支持体に複数配設されてなることを特徴とするラインヘッド。 21. A line head comprising a plurality of the ink jet heads according to claim 13 arranged on the support along a predetermined direction.
  22. 　前記支持体は、所定方向に沿って配設される複数のインクジェットヘッドの各々の前記支持体取付部が取付けられるフレーム部を有することを特徴とする請求項２１に記載のラインヘッド。 The line head according to claim 21, wherein the support has a frame part to which the support attaching part of each of the plurality of inkjet heads arranged along a predetermined direction is attached.
  23. 　複数のインクノズル開口部が一の面に配列されたインクジェットヘッドが複数配列され、支持部材により支持されてなるラインヘッドにおいて、
    　前記インクジェットヘッドの前記一の面と異なる面、又は、前記支持部材の一の面の何れか一方には、取付突起が設けられ、他方には、当該取付突起を受ける取付受部が設けられ、
    　前記取付突起と前記取付受部とが対面配置されて、前記インクジェットヘッドが前記支持部材に固定される
    　ことを特徴とするラインヘッド。     In a line head in which a plurality of inkjet heads in which a plurality of ink nozzle openings are arranged on one surface are arranged and supported by a support member,
    Either one of the surface different from the one surface of the inkjet head or the one surface of the support member is provided with an attachment protrusion, and the other is provided with an attachment receiving portion for receiving the attachment protrusion.
    The line head, wherein the mounting protrusion and the mounting receiving portion are arranged to face each other, and the ink jet head is fixed to the support member.
  24. 　前記インクジェットヘッドの前記一の面と異なる面は、当該一の面とは反対側の面であることを特徴とする請求項２３記載のラインヘッド。 24. The line head according to claim 23, wherein a surface different from the one surface of the inkjet head is a surface opposite to the one surface.
  25. 　前記取付突起又は前記取付受部の少なくとも何れか一方には、前記複数のインクノズル開口部からのインクの吐出により画像が形成される記録媒体の搬送方向に対して直交する幅方向に傾斜する傾斜面が設けられている
    　ことを特徴とする請求項２３又は２４記載のラインヘッド。     At least one of the attachment protrusion and the attachment receiving portion is inclined to incline in the width direction perpendicular to the conveyance direction of the recording medium on which an image is formed by discharging ink from the plurality of ink nozzle openings. The line head according to claim 23 or 24, wherein a surface is provided.
  26. 　前記取付突起及び前記取付受部には、互いに対向する前記傾斜面が設けられていることを特徴とする請求項２５記載のラインヘッド。 26. The line head according to claim 25, wherein the mounting protrusion and the mounting receiving portion are provided with the inclined surfaces facing each other.
  27. 　前記取付突起は、その先端方向に向けて前記幅方向の幅が狭くなる形状を有することを特徴とする請求項２５又は２６記載のラインヘッド。 27. The line head according to claim 25 or 26, wherein the mounting protrusion has a shape in which the width in the width direction becomes narrower toward a tip direction thereof.
  28. 　前記支持部材又は前記インクジェットヘッドの一方に設けられた少なくとも一の前記傾斜面を他方の前記取付突起又は前記取付受部に接触させた状態で前記支持部材と前記インクジェットヘッドとの間の距離を変化させる距離調整機構を有することを特徴とする請求項２５記載のラインヘッド。 The distance between the support member and the inkjet head is changed in a state where at least one inclined surface provided on one of the support member or the inkjet head is in contact with the other attachment projection or the attachment receiving portion. 26. The line head according to claim 25, further comprising a distance adjusting mechanism.
  29. 　前記支持部材の前記インクジェットヘッドと対向する面とは反対側の面には、前記支持部材に対する前記インクジェットヘッドの相対位置を調整するための位置調整部を備える
    　ことを特徴とする請求項２３又は２４記載のラインヘッド。     25. A position adjusting unit for adjusting a relative position of the inkjet head with respect to the support member is provided on a surface opposite to the surface facing the inkjet head of the support member. The line head described.
  30. 　前記位置調整部は、先端方向へ向けて記録媒体の搬送方向に対して直交する幅方向の幅が狭くなる先細形状を有し、当該先細形状部分が前記インクジェットヘッドに設けられた前記取付突起又は前記取付受部と接して前記支持部材に対して上下方向に位置を調整可能に設けられている先細ピンの頭部であることを特徴とする請求項２９記載のラインヘッド。 The position adjusting unit has a tapered shape in which a width in a width direction perpendicular to the conveyance direction of the recording medium is narrowed toward a leading end direction, and the tapered portion is provided with the mounting protrusion or the mounting protrusion provided on the inkjet head. 30. The line head according to claim 29, wherein the line head is a head of a tapered pin that is in contact with the attachment receiving portion and is capable of adjusting a position in the vertical direction with respect to the support member.
  31. 　前記インクジェットヘッドは、複数のインクノズル開口部が所定のパターンで配列されたヘッドチップを複数内蔵することを特徴とする請求項２３～３０の何れか一項に記載のラインヘッド。 The line head according to any one of claims 23 to 30, wherein the inkjet head includes a plurality of head chips each having a plurality of ink nozzle openings arranged in a predetermined pattern.
  32. 　隣接する前記インクジェットヘッドの間には、
    　弾性部材を用いたスペーサー部が設けられていることを特徴とする請求項２３～３１の何れか一項に記載のラインヘッド。     Between the adjacent inkjet heads,
    The line head according to any one of claims 23 to 31, wherein a spacer portion using an elastic member is provided.
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JP7160712B2 (en) 2018-02-12 2022-10-25 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト print bar for inkjet
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