WO2019131009A1 - Image forming device - Google Patents

Image forming device Download PDF

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Publication number
WO2019131009A1
WO2019131009A1 PCT/JP2018/044507 JP2018044507W WO2019131009A1 WO 2019131009 A1 WO2019131009 A1 WO 2019131009A1 JP 2018044507 W JP2018044507 W JP 2018044507W WO 2019131009 A1 WO2019131009 A1 WO 2019131009A1
Authority
WO
WIPO (PCT)
Prior art keywords
image forming
sheet
forming apparatus
charge removing
brush
Prior art date
Application number
PCT/JP2018/044507
Other languages
French (fr)
Japanese (ja)
Inventor
優和 松井
克敏 向島
Original Assignee
シチズン時計株式会社
シチズン・システムズ株式会社
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 シチズン時計株式会社, シチズン・システムズ株式会社 filed Critical シチズン時計株式会社
Publication of WO2019131009A1 publication Critical patent/WO2019131009A1/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
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/52—Stationary guides or smoothers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines

Definitions

  • the present invention relates to an image forming apparatus.
  • the image forming apparatus described in Patent Document 1 discloses a charge removing member including a charge removing brush and a substrate for fixing the brush.
  • the substrate is a plate-like and conductive member, and the longitudinal direction thereof is disposed in the width direction of the sheet to be conveyed. Furthermore, the substrate is bent in a U-shape in the transport direction, and is fixed by sandwiching the static elimination brush at the plate-like portions facing each other.
  • the substrate is fixed in the image forming apparatus by being sandwiched from the thickness direction of the substrate by a plurality of support portions provided on the upstream side and the downstream side in the sheet conveyance direction.
  • the portion sandwiching the substrate is in contact with the substrate, and the portion facing the discharge brush is separated from the discharge brush in the conveyance direction.
  • the discharging brush contacts the sheet to be transported to discharge the sheet.
  • an object of the present invention is to provide an image forming apparatus that prevents the leading end of a sheet from entering the opening of the conveyance path.
  • an image forming apparatus includes a conveyance path for conveying a sheet, and a portion protruding from the conveyance path, which contacts the sheet conveyed to the conveyance path to discharge charges. , And at least one of an upstream side and a downstream side of the charge removal unit in the sheet conveyance direction, the charge removal unit and the gap being separated from each other in the sheet conveyance direction.
  • An opposing member disposed in contact with the sheet, the discharging means being flexible in the gap and provided between the tips of the discharging means, the sheet being in the gap It is characterized by comprising at least one restricting portion that restricts entry.
  • the image forming apparatus of the present invention configured as described above can prevent the leading end of the sheet from entering the opening of the conveyance path.
  • FIG. 2 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is closed.
  • FIG. 2 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is opened.
  • FIG. 1 is a cross-sectional view showing a configuration of an image forming apparatus of Embodiment 1.
  • FIG. 1 is an exploded perspective view showing a configuration of a cutter device of Example 1;
  • FIG. 1 is a cross-sectional view showing a cutter device of Example 1;
  • It is a perspective view which shows the structure of the rear cover of Example 1, and shows the state to which the static elimination brush was attached.
  • FIG. 7 is an enlarged cross-sectional view of a protrusion of the rear cover of Example 1;
  • FIG. 7 is a configuration diagram showing a configuration of a biasing portion of a rear cover of Example 1;
  • FIG. 7 is an enlarged cross-sectional view of a biasing portion of the rear cover of the first embodiment.
  • FIG. 6 is a cross-sectional view showing the configuration of the image forming apparatus of Example 2; It is sectional drawing which expands and shows the protrusion part of Example 2.
  • FIG. 6 is a cross-sectional view showing the configuration of the image forming apparatus of Example 2; It is sectional drawing which expands and shows the protrusion part of Example 2.
  • the image forming apparatus in the first embodiment is applied to a thermal printer.
  • FIG. 1 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is closed.
  • FIG. 2 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is opened.
  • FIG. 3 is a cross-sectional view showing the configuration of the image forming apparatus of the first embodiment. The configuration of the image forming apparatus of the first embodiment will be described below based on FIGS. 1 to 3.
  • the image forming apparatus 1 includes a main body 10 and a cover 20 which can be opened and closed with respect to the main body.
  • the main body 10 includes a roll paper holding unit 12 for holding the roll paper 11, a platen roller 13 for supporting the paper supplied from the roll paper, and a cutter device 50 for cutting the paper. And.
  • the roll paper holding unit 12 rotatably holds the roll paper 11.
  • the roll paper 11 is a continuous paper in which thermal paper is wound in a roll, and supplies the paper to the conveyance path R.
  • the platen roller 13 is disposed downstream of the roll paper 11 in the paper conveyance direction D.
  • the platen roller 13 supports the sheet supplied from the roll sheet 11 from the back side in the image forming operation.
  • the cutter device 50 is disposed downstream of the platen roller 13 in the sheet conveyance direction D.
  • the cover 20 is provided with a thermal head unit 21.
  • the thermal head unit 21 is disposed to face the platen roller 13 when the cover 20 is closed.
  • the thermal head unit 21 is urged in a direction in contact with the platen roller 13 to form a nip N.
  • the thermal head unit 21 performs thermal printing on the sheet at the nip N.
  • the sheet supplied from the roll sheet 11 is conveyed to the nip N.
  • the thermal head unit 21 performs thermal printing on the sheet conveyed to the nip N.
  • the sheet subjected to the thermal printing is cut by the cutter device 50 and discharged from the discharge port 59.
  • FIG. 4 is an exploded perspective view showing the configuration of the cutter device of the first embodiment.
  • FIG. 5 is a cross-sectional view showing the cutter device of the first embodiment.
  • the configuration of the cutter device of the first embodiment will be described based on FIGS. 4 and 5.
  • the cutter device 50 is, as shown in FIGS. 4 and 5, a discharger brush 51 as a discharger, a rear cover 60 as an attachment member to which the discharger brush 51 is attached, and a cutter frame to which a fixed blade 56a and a movable blade 56b are attached. 55, a cutter motor 57 attached to the cutter frame 55, and a front cover 58.
  • the static elimination brush 51 has a brush portion 52 as a static elimination portion and a conductive sheet 53 as a support portion for supporting the brush portion 52.
  • the brush unit 52 is made of, for example, a SUS material, and has a plurality of flexible hair bundles 52a arranged at equal intervals in the width direction E of the sheet orthogonal to the sheet conveyance direction D. Each hair bundle 52a is set to a predetermined hair bundle density.
  • the hair bundle 52 a constitutes the tip of the static elimination brush 51.
  • the conductive sheet 53 extends in the width direction E and is formed in a band shape.
  • the conductive sheet 53 can be a flexible and conductive sheet (for example, made of aluminum) (referred to as an aluminum tape).
  • One end of the hair bundle 52a is attached to one surface of the conductive sheet 53 by a conductive double-sided tape.
  • the conductive sheet 53 to which the hair bundle 52a is attached is attached to the later-described step portion 64 of the rear cover 60 with a double-sided tape.
  • the static elimination brush 51 is attached to the stepped portion 64 such that a part of the brush portion 52 protrudes into the conveyance path R.
  • the brush unit 52 contacts the sheet transported to the transport path R, and removes the charge on the sheet.
  • the rear cover 60 is integrally formed by resin molding. The configuration of the rear cover 60 will be described later.
  • the cutter frame 55 is formed by processing a conductive sheet of iron, aluminum, stainless steel or the like.
  • the cutter frame 55 is composed of a blade mounting portion 55a as a facing member and a motor housing portion 55b.
  • the blade attachment portion 55 a is formed in a plate shape and extends in the width direction E.
  • the blade attachment portion 55 a is provided downstream of the static elimination brush 51 attached to the rear cover 60 in the transport direction D so as to face the static elimination brush 51.
  • the fixed blade 56a is attached to the upper portion of the blade attachment portion 55a.
  • the movable blade 56b is attached to the lower part of the blade attachment portion 55a.
  • the fixed blade 56a is disposed to face the movable blade 56b.
  • the movable blade 56b is connected to the cutter motor 57 via a gear, and operates up and down. By moving the movable blade 56b, the sheet conveyed to the cutter device 50 is cut.
  • the motor accommodating portion 55b is formed in a box shape so as to cover a part of the blade attaching portion 55a below the blade attaching portion 55a, and accommodates the cutter motor 57 inside.
  • An earth wire (not shown) is connected to the cutter frame 55, and is grounded via the earth wire.
  • the front cover 58 is internally provided with an accommodating portion 58 a that accommodates the cutter frame 55, the cutter motor 57, and the discharging brush 51. Further, the front cover 58 is provided with a discharge port 59 for discharging the sheet.
  • the rear cover 60 is attached to the front cover 58 so as to cover the front cover 58 in a state where the static elimination brush 51, the cutter frame 55, and the cutter motor 57 are accommodated in the housing portion 58a of the front cover 58. Then, two screws 91 are attached from the outside of the front cover 58 and one screw 91 is attached from the outside of the rear cover 60, whereby the cutter device 50 is assembled.
  • FIG. 6 is a perspective view showing the configuration of the rear cover of the embodiment 1, and shows a state in which the discharging brush 51 is attached.
  • FIG. 7 is an enlarged cross-sectional view of the protrusion of the rear cover of the first embodiment.
  • FIG. 8 is a block diagram showing the biasing portion of the rear cover of the first embodiment.
  • FIG. 9 is an enlarged sectional view of a biasing portion of the rear cover of the first embodiment.
  • the rear cover 60 is integrally formed by resin molding, and the upper cover 62 and the lower guide for guiding the conveyed sheet into the cutter device 50 with the rear cover main body 61 and the conveyance path R interposed vertically.
  • the upper guide 62 is provided on the upper side of the conveyance path R so as to extend in the direction opposite to the conveyance direction D, as shown in FIG.
  • the lower surface of the upper guide 62 is composed of a first lower surface 62 a substantially parallel to the transport direction D and a second lower surface 62 b inclined with respect to the transport direction D.
  • the lower guide 63 is provided on the lower side of the conveyance path R so as to extend in the direction opposite to the conveyance direction D.
  • the upper surface of the lower guide 63 is composed of a first upper surface 63 a substantially parallel to the conveyance direction D and a second lower surface 63 b inclined with respect to the conveyance direction D.
  • the lower guide 63 extends longer than the upper guide 62 in the direction opposite to the transport direction D.
  • the rear cover 60 has a step 64 recessed from the rear cover main body 61 in the direction opposite to the transport direction D, as shown in FIGS. 6 and 7.
  • the static elimination brush 51 is attached to the step 64. That is, the static elimination brush 51 is attached to the step portion 64 disposed upstream of the static elimination brush 51 in the transport direction D.
  • the lower end of the step portion 64 is formed to face the transport path R.
  • a gap is formed between the blade attachment portion 55 a of the cutter frame 55 and the discharging brush 51 attached to the stepped portion 64 in the transport direction D.
  • the gap is formed to open toward the conveyance path R.
  • the discharging brush 51 is pressed by the sheet conveyed to the conveyance path R, and in a state of being in contact with the sheet, it is bent at this gap.
  • the rear cover 60 has a projecting portion 65 that protrudes from the lower end of the step portion 64 in the transport direction D toward the blade attachment portion 55a.
  • a plurality of projecting portions 65 are provided at equal intervals in the width direction E.
  • the lower surface 65a of the projecting portion 65 is substantially parallel to the sheet conveyance direction D, and is the same surface as the first lower surface 62a.
  • the protrusion 65 may be in contact with the blade attachment portion 55a.
  • the protruding portion 65 restricts the sheet from entering the gap between the blade attachment portion 55 a and the static elimination brush 51.
  • the protrusions 65 are provided at the same intervals as the intervals at which the hair bundles 52a of the static elimination brush 51 are provided, and do not come in contact with the hair bundles 52a. In addition, the protrusion part 65 and the hair bundle 52a do not need to be equal intervals, and the protrusion part 65 does not need to contact the hair bundle 52a.
  • a corner R portion 64b rounded at a corner is formed at an angle portion formed by the surface 64a of the step portion 64 to which the discharging brush 51 is attached and the first lower surface 62a of the upper guide 62. That is, the first lower surface 62a is connected to the lower surface 65a of the projecting portion 65 in the portion having the projecting portion 65 in the width direction E, and is connected to the corner R portion 64b in the portion having no projecting portion 65 in the width direction E .
  • the corner formed by the surface 64a of the step 64 to which the discharging brush 51 is attached and the first lower surface 62a of the upper guide 62 may be chamfered in a planar manner.
  • the static elimination brush 51 is attached to the step portion 64 and the urging portion 66 described later by a double-sided tape, and the hair bundle 52 a of the static elimination brush 51 is ejected to the conveyance path R.
  • the biasing portion 66 is provided at one end in the width direction E of the rear cover 60, as shown in FIG.
  • the biasing portion 66 includes an elastic portion 67 having elasticity and a convex portion 68 provided at the tip of the elastic portion 67.
  • the elastic portion 67 is provided at an opening 69 provided at one end of the rear cover 60 in the width direction E.
  • the opening 69 is formed to straddle the rear cover main body 61 and the step 64.
  • the opening 69 is formed in a rectangular shape, and the base end of the elastic portion 67 is connected to the top surface 69 a of the opening.
  • the biasing portion 66 is not connected to the side surface 69 b and the bottom surface 69 c of the opening 69, and a slit is formed between the biasing portion 66 and the side surface 69 b and the bottom surface 69 c of the opening 69.
  • the convex portion 68 protrudes from the tip of the elastic portion 67 in the transport direction D toward the blade attachment portion 55 a.
  • the convex portion 68 is in contact with the blade attachment portion 55a.
  • the convex portion 68 may be designed to interfere with the blade attachment portion 55a.
  • the static elimination brush 51 is attached to the rear cover 60 configured in this way.
  • the operator affixes the end of the conductive sheet 53 of the static elimination brush 51 to the convex portion 68 of the biasing portion 66.
  • the worker sticks the conductive sheet 53 to the step 64.
  • the elastic portion 67 may have a flat surface to which the conductive sheet 53 is attached.
  • the conductive sheet 53 attached to the elastic portion 67 is urged toward the blade attachment portion 55a by the urging portion 66, and the conductive sheet 53 is in a state of always in contact with the blade attachment portion 55a.
  • the image forming apparatus 1 is provided with a conveyance path R for conveying a sheet, and a portion protruding from the conveyance path R for discharging charges by contacting the sheet conveyed to the conveyance path R.
  • the discharging unit (the discharging brush 51) is pressed against the sheet to be transported.
  • the tip (hair bundle 52a) of the static elimination brush 51) bends and contacts the sheet. Therefore, the discharging means (the discharging brush 51) can be reliably brought into contact with the sheet, and the reliability of the discharging of the charge on the sheet can be improved.
  • a regulating portion protruding portion 65 for regulating the sheet from entering the gap between the discharging means (the discharging brush 51) and the opposing member (the blade attaching portion 55a)
  • the sheet is prevented from entering the gap. be able to. Therefore, occurrence of paper jam can be prevented.
  • the static elimination brush By raising the transport path, the static elimination brush can be bent in the transport path without having a gap between the static elimination means and the opposing member. The reason is that the length of the hair bundle extending into the transport path is long, and the hair bundle is easily bent.
  • the transport path is made high, there is a problem that the leading end of the sheet is rounded in the transport path and the sheet is not discharged from the discharge port.
  • the height of the discharge port is increased in order to discharge the sheet which has been rolled in the transport path, there is a problem that the user puts a finger in the discharge port.
  • such a problem is solved by providing a restricting portion that restricts the sheet from entering the gap between the charge removing unit and the facing member.
  • the charge removing device (the charge removing brush 51) is attached to the attachment member (rear cover 60) disposed upstream or downstream of the charge removing device (the charge removing brush 51) in the transport direction D. ) Is a projection which protrudes from the mounting member (rear cover 60) toward the opposing member (the blade mounting portion 55a) (FIG. 7).
  • the restricting portion (projecting portion 65) can be formed on the mounting member (rear cover 60) without providing a separate part. Therefore, the number of parts can be reduced.
  • the restricting portion (projecting portion 65) is provided at a position not in contact with the tip portion (hair bundle 52a) of the static elimination unit (static charge brush 51) (FIG. 6).
  • the hair bundle 52a of the discharging unit (the discharging brush 51) is spaced apart and disposed so as to avoid the regulating portion (the projecting portion 65). Therefore, the static elimination means (static elimination brush 51) can be easily attached to the attachment member (rear cover 60) in a state where the static elimination means (static elimination brush 51) does not interfere with the regulating portion (projecting portion 65).
  • the tip portions (hair bundle 52a) of the discharging unit (the discharging brush 51) are arranged at equal intervals in the width direction E, and the regulating units (projections 65) are arranged at equal intervals in the width direction E ( Figure 6).
  • the mounting member (rear cover 60) is provided on the upper side of the conveyance path R, and is provided on the lower side of the conveyance path R and an upper guide (upper guide 62) extending in the direction opposite to the conveyance direction D. And a lower guide (lower guide 63) extending in the direction opposite to the transport direction D, and the upper guide (upper guide 62) and the lower guide (lower guide 63) are attachment members (rear cover 60). And one-piece molding (Fig. 5).
  • the upper guide (upper guide 62) and the lower guide (lower guide 63) can be formed on the mounting member (rear cover 60) without providing separate components. Therefore, the number of parts can be reduced.
  • the lower surface of the protrusion 65 is substantially flush with the lower surface of the upper guide (upper guide 62) (FIG. 7).
  • the corner formed by the surface of the mounting member (rear cover 60) to which the discharging means (the discharging brush 51) is attached and the lower surface of the upper guide (upper guide 62) is chamfered (FIG. 7).
  • the discharging means (the discharging brush 51) can be largely bent in the direction opposite to the conveying direction D. Therefore, the discharging means (the discharging brush 51) can be made to inhibit the reverse running of the sheet as much as possible.
  • a conductive metal piece and a metal made of a metal that presses this metallic piece to the static elimination brush in contact with the static elimination brush There is one configured by using a pressing member.
  • the pressing member is further connected to a metal part such as a metal bracket grounded by a ground wire.
  • the charge removing unit (the charge removing brush 51) is conductive and supports the charge removing unit (brush unit 52) in contact with the sheet and the charge removing unit (brush unit 52).
  • the mounting member (rear cover 60) includes a biasing portion 66 having a biasing force toward the conductive opposing member (the blade mounting portion 55a), A part of the support portion (conductive sheet 53) is attached to the biasing portion 66 (FIG. 9).
  • the support portion (conductive sheet 53) of the discharging means (the discharging brush 51) can be brought into contact with the opposing member (the blade mounting portion 55a) which is a conductive metal material by the biasing portion 66. Therefore, the charge carried by the discharging means (the discharging brush 51) can be released to the opposing member (the blade attachment portion 55a) by discharging the sheet with a small number of parts and a simple configuration.
  • the mounting member (rear cover 60) is made of resin, and the biasing portion 66 is directed toward the opposing member (the blade mounting portion 55a) at the elastic portion 67 having elasticity and the tip of the elastic portion 67. And a protruding protrusion 68 (FIG. 9).
  • the biasing portion 66 can be easily formed by resin molding. Therefore, the biasing portion 66 can be formed on the mounting member (rear cover 60) without providing a separate part, and the number of parts can be reduced.
  • the biasing portion 66 is provided at the end of the support portion (conductive sheet 53) in the width direction E (FIG. 6).
  • one end of the support portion (conductive sheet 53) can be attached to the biasing portion 66. Therefore, the biasing force of the biasing unit 66 can be utilized.
  • the biasing portion is provided at, for example, the central portion of the support portion
  • the conductive sheet attached to the step portion with double-sided tape or the like holds down the biasing portion in a state of being retracted from both sides. As a result, there is a problem that the biasing force of the biasing unit does not act.
  • FIG. 10 is a cross-sectional view showing the configuration of the image forming apparatus of the second embodiment.
  • FIG. 11 is an enlarged cross-sectional view of the protrusion of the second embodiment.
  • the configuration of the image forming apparatus of the second embodiment will be described based on FIGS. 10 and 11.
  • FIG. The same or equivalent parts as the contents described in the first embodiment will be described using the same terms or the same reference numerals.
  • the image forming apparatus 101 according to the second embodiment is different from the image forming apparatus according to the first embodiment in that the image forming apparatus 101 according to the second embodiment mainly includes no cutter device.
  • the thermal head unit 21 includes an upper frame 160 to which various components such as a print head are attached.
  • the upper frame 160 is a resin component, and as shown in FIG. 11, has a frame wall 160a as an attachment member disposed opposite to the front wall 120a of the cover 120 as an opposite member.
  • the lower end of the frame wall 160 a is formed to face the transport path R.
  • a gap is formed between the front wall 120 a and the discharging brush 51 attached to the frame wall 160 a via a ground plate 180 described later.
  • the gap is formed to open toward the conveyance path R.
  • the discharging brush 51 is pressed by the sheet conveyed to the conveyance path R, and in a state of being in contact with the sheet, it is bent at this gap.
  • the upper frame 160 has a protrusion 165 as a restricting portion that protrudes toward the front wall 120 a in the transport direction D from the lower end of the frame wall 160 a.
  • a plurality of projecting portions 165 are provided at equal intervals in the width direction E shown in the first embodiment.
  • the lower surface 165a of the projecting portion 165 is substantially parallel to the sheet conveyance direction D, and is in the same plane as the lower surface 162a of the frame wall 160a.
  • the protrusion 165 may abut on the front wall 120a.
  • the projecting portion 165 is provided in the width direction E at the same interval as the interval at which the hair bundle 52a of the static elimination brush 51 is provided, and does not contact the hair bundle 52a.
  • the protrusion part 165 and the hair bundle 52a do not need to be provided at equal intervals, and the protrusion part 165 does not need to contact the hair bundle 52a.
  • a corner R-portion 164b rounded at a corner is formed at the corner between the surface of the frame wall 160a to which the static elimination brush 51 is attached and the lower surface 162a of the frame wall 160a. That is, the lower surface 162a of the frame wall 160a is connected to the lower surface 165a of the projecting portion 165 in the portion where the projecting portion 165 is in the width direction E, and is connected to the corner R portion 164b in the portion where the projecting portion 165 is not in the width direction E Be done.
  • the corner formed by the surface of the frame wall 160a to which the discharging brush 51 is attached and the lower surface 162a of the frame wall 160a may be chamfered in a planar manner.
  • the outer surface of the cover 120 and the lower surface facing the transport path R of the cover 120 form a corner on the upper side of the discharge port 159.
  • the outer surface of the lower case 110 and the upper surface facing the conveyance path R of the lower case 110 form a corner below the discharge port 159. The user can cut the sheet discharged from the discharge port 159 by pressing it against either the upper or lower corner of the discharge port 159.
  • Attached to the upper frame 160 are a ground plate 180 to which the static elimination brush 51 is attached, a ground spring 181 which is an elastic body contacting the ground plate, a head bracket 195 for supporting the head, and the like.
  • the ground plate 180 is formed of a conductive metal in a plate shape.
  • the static elimination brush 51 is attached to the ground plate 180 by a conductive double-sided tape.
  • the static elimination brush 51 attached to the ground plate 180 is attached to the ground plate 180 such that a part of the brush portion 52 protrudes into the transport path R.
  • the brush unit 52 contacts the sheet transported to the transport path R, and removes the charge on the sheet.
  • the ground plate 180 is attached to the upper frame 160 by screws 192.
  • the upper frame 160 has a housing portion 161 for housing the ground spring 181.
  • the ground spring 181 is formed of a conductive and elastic metal in a linear shape.
  • the ground spring 181 has one end in contact with the ground plate 180 and the other end extending linearly in the direction opposite to the transport direction in contact with the head bracket 195.
  • the head bracket 195 is formed of conductive metal.
  • the head bracket 195 is connected to a ground wire (not shown) and grounded.
  • the present invention can be applied to a configuration that does not have a cutter device, and exhibits the same effects as the first embodiment.
  • the projecting portions 65 and 165 are provided on the mounting member (rear cover 60, frame wall 160a) provided on the upstream side of the discharging brush 51 in the transport direction D is shown.
  • the protrusion may be provided on the opposing member provided downstream of the static elimination brush 51 in the transport direction D.
  • the plurality of projecting portions 65 and 165 may be united by connecting members in the width direction E by a connecting member, and may be formed as a separate component from the mounting member and the opposing member. In this case, the plurality of unitized projections are fixed to at least one of the attachment member and the opposing member.
  • Example 1 and Example 2 the example which provides multiple protrusion parts 65 and 165 in the width direction E was shown. However, at least one protrusion may be provided in the width direction E. At least at the portion where the protruding portions 65 and 165 are provided, the effect of preventing the occurrence of paper jam can be obtained.
  • the protruding portions 65 and 165 can be provided in the necessary number according to the position where paper jam is likely to occur, the frequency of the paper jam, and the like.
  • Example 1 and Example 2 the example which provides the opposing member arrange
  • an opposing member may be provided upstream of the static elimination means with a gap between the static elimination means, and in the transport direction D, upstream and downstream of the static elimination means in the transport direction D
  • An opposing member may be provided to be disposed.
  • the conductive sheet 53 to which the discharging brush 51 is attached may be directly attached to the upstream side wall surface in the transport direction D of the front wall 120a.
  • the front wall 120 a is configured as a mounting member disposed downstream of the static elimination brush 51 in the transport direction D.
  • the front wall 120a is also a facing member, and a large corner R portion is formed at a corner formed by the affixing surface of the conductive sheet 53 of the front wall 120a and the lower surface facing the transport path R of the front wall 120a.
  • a gap is formed between the hair bundle 52a and the corner R portion.
  • the hair bundle 52a can be sufficiently deformed in the transport direction D by the gap between the hair bundle 52a and the corner R portion.
  • the protrusions 165 can be provided on either the front wall 120a or the frame wall 160a.
  • the frame wall 160a disposed on the upstream side of the static elimination brush 51 in the transport direction D may be disposed with a gap from the static elimination brush 51 as another opposing member.
  • the protrusion 165 is formed in the gap between the frame wall 160 a and the static elimination brush 51.
  • Example 1 and Example 2 the example which uses a static elimination brush as a static elimination brush was shown.
  • the static elimination means one having a conductive non-woven fabric formed in a comb shape may be used. That is, even if it does not have a brush shape, it may be one that contacts the sheet conveyed to the conveyance path R and deforms between the charge removing unit and the opposing member to such an extent that the conveyance of the sheet is not impeded.
  • the blade mounting portion 55a, the front wall 120a, the frame wall 160a, and the like are opposed as the opposing members over the entire area in the longitudinal direction of the static elimination unit.
  • the opposing member may be opposed to a part of the static elimination means in the longitudinal direction.
  • Example 1 the example which provides several static elimination means equally to the width direction E was shown.
  • the discharging means may not be evenly arranged.
  • Example 1 and Example 2 the example which arrange
  • the discharging means may be arranged to project upward from the lower side of the transport path.
  • the charge removing means, the opposing member, and the protrusion are also provided on the lower side of the transport path.
  • Example 1 and Example 2 the static elimination means showed the example which has the some hair bundle 52a.
  • a hair bundle can be made into various shapes, for example, you may form in strip shape.
  • the image forming apparatus is applied to a thermal printer.
  • the image forming apparatus can be applied to an impact type printer, a laser printer, an ink jet printer, and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Electronic Switches (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

The present invention prevents the leading edge of a paper sheet from entering an opening in a conveyance path. The present invention comprises: a conveyance path (R) for conveying a paper sheet; a static eliminating means (static eliminating brush [51]) that contacts the paper sheet conveyed by the conveyance path R and eliminates electrical charge, is provided so as to protrude partially into the conveyance path (R), and has multiple leading ends (hair bundles [52a]) interstitially provided along the paper sheet width direction E; and an opposing member (blade mounting portion [55a]) which is positioned upstream and/or downstream of the static eliminating means (static eliminating brush [51]) in the paper sheet conveyance direction (D) with a gap therebetween. The static eliminating means (static eliminating brush [51]) is equipped with at least one restricting unit which contacts the paper sheet and can be bent in the gap and which is provided between the leading ends (hair bundles [52a]) of the static eliminating means (static eliminating brush [51]) so as to restrict the entry of the paper sheet into the gap.

Description

画像形成装置Image forming device
　本発明は、画像形成装置に関するものである。 The present invention relates to an image forming apparatus.
　画像形成装置には、搬送路に搬送された用紙を除電する除電手段（例えば、除電ブラシ）を備えたものが知られている（例えば、特許文献１参照）。 There is known an image forming apparatus provided with a discharging unit (for example, a discharging brush) for discharging the sheet transported to the transport path (see, for example, Patent Document 1).
　特許文献１に記載の画像形成装置は、除電ブラシと、これを固定する基板とから構成される除電部材を開示する。基板は、板状で導電性の部材であり、その長手方向が、搬送される用紙の幅方向に向けて配置される。さらに、基板は、搬送方向にＵ字状に曲げられ、互いに対向する板状の部分で、除電ブラシを挟んで固定する。基板は、用紙の搬送方向の上流側と下流側に設けられる複数の支持部によって、基板の厚み方向から挟んで画像形成装置内に固定される。用紙の搬送方向の下流側の支持部は、基板を挟む部分が基板に接し、除電ブラシと対向する部分が除電ブラシから搬送方向に離間する。このような構成により、除電ブラシが、搬送される用紙に接触して用紙の除電をする。 The image forming apparatus described in Patent Document 1 discloses a charge removing member including a charge removing brush and a substrate for fixing the brush. The substrate is a plate-like and conductive member, and the longitudinal direction thereof is disposed in the width direction of the sheet to be conveyed. Furthermore, the substrate is bent in a U-shape in the transport direction, and is fixed by sandwiching the static elimination brush at the plate-like portions facing each other. The substrate is fixed in the image forming apparatus by being sandwiched from the thickness direction of the substrate by a plurality of support portions provided on the upstream side and the downstream side in the sheet conveyance direction. In the support portion on the downstream side in the sheet conveyance direction, the portion sandwiching the substrate is in contact with the substrate, and the portion facing the discharge brush is separated from the discharge brush in the conveyance direction. With such a configuration, the discharging brush contacts the sheet to be transported to discharge the sheet.
特開２００１－３１５４０１号公報JP 2001-315401 A
　しかしながら、特許文献１に記載された構成では、用紙の先端が、除電ブラシと用紙の搬送方向の下流側の支持部との間に入り込んで紙詰まりが生じる、という問題がある。 However, in the configuration described in Patent Document 1, there is a problem that the leading end of the sheet gets into the gap between the discharging brush and the downstream support portion in the sheet conveyance direction, causing a paper jam.
　そこで、本発明は、用紙の先端が搬送路の開口に入り込むことを防止する画像形成装置を提供することを目的とする。 Therefore, an object of the present invention is to provide an image forming apparatus that prevents the leading end of a sheet from entering the opening of the conveyance path.
　前記目的を達成するために、本発明の画像形成装置は、用紙を搬送する搬送路と、前記搬送路に搬送された前記用紙に接触して電荷を除電する、前記搬送路に一部が突出して設けられると共に、前記用紙の幅方向に先端部が互いに離間して複数設けられる除電手段と、前記用紙の搬送方向において、前記除電手段の上流または下流の少なくとも一方に、前記除電手段と間隙を有して配置される対向部材と、を備え、前記除電手段は、前記用紙に接触して、前記間隙で撓み可能であり、前記除電手段の先端部間に設けられる、前記間隙に前記用紙が入ることを規制する少なくとも１つの規制部を備えることを特徴とする。 In order to achieve the above object, an image forming apparatus according to the present invention includes a conveyance path for conveying a sheet, and a portion protruding from the conveyance path, which contacts the sheet conveyed to the conveyance path to discharge charges. , And at least one of an upstream side and a downstream side of the charge removal unit in the sheet conveyance direction, the charge removal unit and the gap being separated from each other in the sheet conveyance direction. An opposing member disposed in contact with the sheet, the discharging means being flexible in the gap and provided between the tips of the discharging means, the sheet being in the gap It is characterized by comprising at least one restricting portion that restricts entry.
　このように構成された本発明の画像形成装置は、用紙の先端が搬送路の開口に入り込むことを防止することができる。 The image forming apparatus of the present invention configured as described above can prevent the leading end of the sheet from entering the opening of the conveyance path.
実施例１の画像形成装置のカバーが閉じた状態を示す斜視図である。FIG. 2 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is closed. 実施例１の画像形成装置のカバーが開いた状態を示す斜視図である。FIG. 2 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is opened. 実施例１の画像形成装置の構成を示す断面図である。FIG. 1 is a cross-sectional view showing a configuration of an image forming apparatus of Embodiment 1. 実施例１のカッタ装置の構成を示す分解斜視図である。FIG. 1 is an exploded perspective view showing a configuration of a cutter device of Example 1; 実施例１のカッタ装置を示す断面図である。FIG. 1 is a cross-sectional view showing a cutter device of Example 1; 実施例１のリアカバーの構成を示す斜視図であり、除電ブラシが取り付けられた状態を示す。It is a perspective view which shows the structure of the rear cover of Example 1, and shows the state to which the static elimination brush was attached. 実施例１のリアカバーの突出部を拡大して示す断面図である。FIG. 7 is an enlarged cross-sectional view of a protrusion of the rear cover of Example 1; 実施例１のリアカバーの付勢部の構成を示す構成図である。FIG. 7 is a configuration diagram showing a configuration of a biasing portion of a rear cover of Example 1; 実施例１のリアカバーの付勢部を拡大して示す断面図である。FIG. 7 is an enlarged cross-sectional view of a biasing portion of the rear cover of the first embodiment. 実施例２の画像形成装置の構成を示す断面図である。FIG. 6 is a cross-sectional view showing the configuration of the image forming apparatus of Example 2; 実施例２の突出部を拡大して示す断面図である。It is sectional drawing which expands and shows the protrusion part of Example 2. FIG.
　以下、本開示による画像形成装置を実現する実施形態を、図面に示す実施例１～実施例２に基づいて説明する。 Hereinafter, an embodiment for realizing an image forming apparatus according to the present disclosure will be described based on Examples 1 and 2 shown in the drawings.
　まず、構成を説明する。
　実施例１における画像形成装置は、サーマルプリンタに適用される。 First, the configuration will be described.
The image forming apparatus in the first embodiment is applied to a thermal printer.
　［画像形成装置の構成］
　図１は、実施例１の画像形成装置のカバーが閉じた状態を示す斜視図である。図２は、実施例１の画像形成装置のカバーが開いた状態を示す斜視図である。図３は、実施例１の画像形成装置の構成を示す断面図である。以下、図１～図３に基づいて、実施例１の画像形成装置の構成を説明する。 [Configuration of image forming apparatus]
FIG. 1 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is closed. FIG. 2 is a perspective view showing a state in which the cover of the image forming apparatus of Embodiment 1 is opened. FIG. 3 is a cross-sectional view showing the configuration of the image forming apparatus of the first embodiment. The configuration of the image forming apparatus of the first embodiment will be described below based on FIGS. 1 to 3.
　画像形成装置１は、図１に示すように、本体１０と、本体に対して開閉可能なカバー２０と、を備える。 As illustrated in FIG. 1, the image forming apparatus 1 includes a main body 10 and a cover 20 which can be opened and closed with respect to the main body.
　本体１０は、図２及び図３に示すように、ロール紙１１を保持するロール紙保持部１２と、ロール紙から供給された用紙を支持するプラテンローラ１３と、用紙を切断するカッタ装置５０と、を備える。 As shown in FIGS. 2 and 3, the main body 10 includes a roll paper holding unit 12 for holding the roll paper 11, a platen roller 13 for supporting the paper supplied from the roll paper, and a cutter device 50 for cutting the paper. And.
　ロール紙保持部１２は、ロール紙１１を回転可能に保持する。ロール紙１１は、感熱紙がロール状に巻回された状態の連続紙であり、用紙を搬送路Ｒに供給する。 The roll paper holding unit 12 rotatably holds the roll paper 11. The roll paper 11 is a continuous paper in which thermal paper is wound in a roll, and supplies the paper to the conveyance path R.
　プラテンローラ１３は、用紙の搬送方向Ｄで、ロール紙１１の下流側に配置される。プラテンローラ１３は、画像形成動作に際して、ロール紙１１から供給された用紙を裏面側から支持する。 The platen roller 13 is disposed downstream of the roll paper 11 in the paper conveyance direction D. The platen roller 13 supports the sheet supplied from the roll sheet 11 from the back side in the image forming operation.
　カッタ装置５０は、用紙の搬送方向Ｄで、プラテンローラ１３の下流側に配置される。 The cutter device 50 is disposed downstream of the platen roller 13 in the sheet conveyance direction D.
　カバー２０は、サーマルヘッドユニット２１を備える。サーマルヘッドユニット２１は、カバー２０が閉じた状態において、プラテンローラ１３と対向して配置される。サーマルヘッドユニット２１は、プラテンローラ１３に当接する方向に付勢され、ニップＮを形成する。サーマルヘッドユニット２１は、ニップＮにおいて、用紙に感熱印刷を行う。 The cover 20 is provided with a thermal head unit 21. The thermal head unit 21 is disposed to face the platen roller 13 when the cover 20 is closed. The thermal head unit 21 is urged in a direction in contact with the platen roller 13 to form a nip N. The thermal head unit 21 performs thermal printing on the sheet at the nip N.
　このように構成された画像形成装置１は、ロール紙１１から供給された用紙が、ニップＮに搬送される。ニップＮに搬送された用紙は、サーマルヘッドユニット２１によって、感熱印刷が行われる。感熱印刷が行われた用紙は、カッタ装置５０によって切断され、排出口５９から排出される。 In the image forming apparatus 1 configured as described above, the sheet supplied from the roll sheet 11 is conveyed to the nip N. The thermal head unit 21 performs thermal printing on the sheet conveyed to the nip N. The sheet subjected to the thermal printing is cut by the cutter device 50 and discharged from the discharge port 59.
　［カッタ装置の構成］
　図４は、実施例１のカッタ装置の構成を示す分解斜視図である。図５は、実施例１のカッタ装置を示す断面図である。以下、図４および図５に基づいて、実施例１のカッタ装置の構成を説明する。 [Configuration of cutter device]
FIG. 4 is an exploded perspective view showing the configuration of the cutter device of the first embodiment. FIG. 5 is a cross-sectional view showing the cutter device of the first embodiment. Hereinafter, the configuration of the cutter device of the first embodiment will be described based on FIGS. 4 and 5.
　カッタ装置５０は、図４および図５に示すように、除電手段としての除電ブラシ５１と、除電ブラシ５１が取り付けられる取付部材としてのリアカバー６０と、固定刃５６ａと可動刃５６ｂが取り付けられるカッタフレーム５５と、カッタフレーム５５に取り付けられるカッタモータ５７と、フロントカバー５８と、を備える。 The cutter device 50 is, as shown in FIGS. 4 and 5, a discharger brush 51 as a discharger, a rear cover 60 as an attachment member to which the discharger brush 51 is attached, and a cutter frame to which a fixed blade 56a and a movable blade 56b are attached. 55, a cutter motor 57 attached to the cutter frame 55, and a front cover 58.
　除電ブラシ５１は、除電部としてのブラシ部５２と、ブラシ部５２を支持する支持部としての導電シート５３と、を有する。ブラシ部５２は、例えばＳＵＳ材で構成され、用紙の搬送方向Ｄに直交する用紙の幅方向Ｅに、等間隔に配置された可とう性のある複数の毛束５２ａを有する。各毛束５２ａは、所定の毛束密度に設定されている。なお、毛束５２ａは、除電ブラシ５１の先端部を構成する。 The static elimination brush 51 has a brush portion 52 as a static elimination portion and a conductive sheet 53 as a support portion for supporting the brush portion 52. The brush unit 52 is made of, for example, a SUS material, and has a plurality of flexible hair bundles 52a arranged at equal intervals in the width direction E of the sheet orthogonal to the sheet conveyance direction D. Each hair bundle 52a is set to a predetermined hair bundle density. The hair bundle 52 a constitutes the tip of the static elimination brush 51.
　導電シート５３は、幅方向Ｅに延在して帯状に形成される。導電シート５３は、柔軟性があり、且つ、導電性がある、例えばアルミニウム製のシート（アルミテープと称される）を使用することができる。導電シート５３の片面には、毛束５２ａの一端が、導電性の両面テープによって貼り付けられる。 The conductive sheet 53 extends in the width direction E and is formed in a band shape. The conductive sheet 53 can be a flexible and conductive sheet (for example, made of aluminum) (referred to as an aluminum tape). One end of the hair bundle 52a is attached to one surface of the conductive sheet 53 by a conductive double-sided tape.
　毛束５２ａが貼り付けられた導電シート５３は、両面テープにより、リアカバー６０の後述する段部６４に貼り付けられる。除電ブラシ５１は、ブラシ部５２の一部が搬送路Ｒに突出するように、段部６４に貼り付けられる。ブラシ部５２は、搬送路Ｒに搬送された用紙に接触して、用紙に帯電した電荷を除電する。 The conductive sheet 53 to which the hair bundle 52a is attached is attached to the later-described step portion 64 of the rear cover 60 with a double-sided tape. The static elimination brush 51 is attached to the stepped portion 64 such that a part of the brush portion 52 protrudes into the conveyance path R. The brush unit 52 contacts the sheet transported to the transport path R, and removes the charge on the sheet.
　リアカバー６０は、樹脂成形により一体に形成される。リアカバー６０の構成については、後述する。 The rear cover 60 is integrally formed by resin molding. The configuration of the rear cover 60 will be described later.
　カッタフレーム５５は、鉄、アルミニウム、ステンレス等の導電性のある板金を加工して形成される。カッタフレーム５５は、対向部材としての刃取付部５５ａと、モータ収容部５５ｂとから構成される。 The cutter frame 55 is formed by processing a conductive sheet of iron, aluminum, stainless steel or the like. The cutter frame 55 is composed of a blade mounting portion 55a as a facing member and a motor housing portion 55b.
　刃取付部５５ａは、板状に形成され、幅方向Ｅに延在する。刃取付部５５ａは、搬送方向Ｄにおいて、リアカバー６０に取り付けられた除電ブラシ５１の下流に、除電ブラシ５１に対向して設けられる。 The blade attachment portion 55 a is formed in a plate shape and extends in the width direction E. The blade attachment portion 55 a is provided downstream of the static elimination brush 51 attached to the rear cover 60 in the transport direction D so as to face the static elimination brush 51.
　刃取付部５５ａの上部には、固定刃５６ａが取り付けられる。刃取付部５５ａの下部には、可動刃５６ｂが取り付けられる。固定刃５６ａは、可動刃５６ｂと対向して配置される。可動刃５６ｂは、ギアを介してカッタモータ５７に接続され、上下に動作するようになっている。可動刃５６ｂが可動することで、カッタ装置５０に搬送された用紙が切断される。 The fixed blade 56a is attached to the upper portion of the blade attachment portion 55a. The movable blade 56b is attached to the lower part of the blade attachment portion 55a. The fixed blade 56a is disposed to face the movable blade 56b. The movable blade 56b is connected to the cutter motor 57 via a gear, and operates up and down. By moving the movable blade 56b, the sheet conveyed to the cutter device 50 is cut.
　モータ収容部５５ｂは、刃取付部５５ａの下側で、刃取付部５５ａの一部を覆うように、箱状に形成され、内部にカッタモータ５７を収容する。カッタフレーム５５には、アース線（図示せず）が接続され、アース線を介して接地される。 The motor accommodating portion 55b is formed in a box shape so as to cover a part of the blade attaching portion 55a below the blade attaching portion 55a, and accommodates the cutter motor 57 inside. An earth wire (not shown) is connected to the cutter frame 55, and is grounded via the earth wire.
　フロントカバー５８は、内部に、カッタフレーム５５と、カッタモータ５７と、除電ブラシ５１と、を収容する収容部５８ａを備える。また、フロントカバー５８は、用紙を排出する排出口５９を備える。 The front cover 58 is internally provided with an accommodating portion 58 a that accommodates the cutter frame 55, the cutter motor 57, and the discharging brush 51. Further, the front cover 58 is provided with a discharge port 59 for discharging the sheet.
　フロントカバー５８の収容部５８ａに、除電ブラシ５１と、カッタフレーム５５と、カッタモータ５７と、を収容した状態で、リアカバー６０がフロントカバー５８に蓋をするように取り付けられる。そして、フロントカバー５８の外側から、２つのビス９１が取り付けられ、リアカバー６０の外側から１つのビス９１が取り付けられることで、カッタ装置５０が組み立てられる。 The rear cover 60 is attached to the front cover 58 so as to cover the front cover 58 in a state where the static elimination brush 51, the cutter frame 55, and the cutter motor 57 are accommodated in the housing portion 58a of the front cover 58. Then, two screws 91 are attached from the outside of the front cover 58 and one screw 91 is attached from the outside of the rear cover 60, whereby the cutter device 50 is assembled.
　［リアカバーの構成］
　図６は、実施例１のリアカバーの構成を示す斜視図であり、除電ブラシ５１が取り付けられた状態を示す。図７は、実施例１のリアカバーの突出部を拡大して示す断面図である。図８は、実施例１のリアカバーの付勢部を示す構成図である。図９は、実施例１のリアカバーの付勢部を拡大して示す断面図である。以下、図５～図９に基づいて、実施例１のリアカバーの構成を説明する。 [Rear cover configuration]
FIG. 6 is a perspective view showing the configuration of the rear cover of the embodiment 1, and shows a state in which the discharging brush 51 is attached. FIG. 7 is an enlarged cross-sectional view of the protrusion of the rear cover of the first embodiment. FIG. 8 is a block diagram showing the biasing portion of the rear cover of the first embodiment. FIG. 9 is an enlarged sectional view of a biasing portion of the rear cover of the first embodiment. Hereinafter, the configuration of the rear cover of the first embodiment will be described based on FIGS. 5 to 9.
　リアカバー６０は、図５に示すように、樹脂成形により一体に形成され、リアカバー本体６１と、搬送路Ｒを上下に挟んで、搬送される用紙をカッタ装置５０内に案内する上側ガイド６２および下側ガイド６３と、除電ブラシ５１が取り付けられる段部６４と、段部６４に設けられた規制部としての突出部６５と、刃取付部５５ａに押し付ける方向に付勢する付勢部６６と、を備える。 As shown in FIG. 5, the rear cover 60 is integrally formed by resin molding, and the upper cover 62 and the lower guide for guiding the conveyed sheet into the cutter device 50 with the rear cover main body 61 and the conveyance path R interposed vertically. The side guide 63, the step portion 64 to which the discharging brush 51 is attached, the projecting portion 65 as a restricting portion provided on the step portion 64, and the urging portion 66 urging the blade attachment portion 55a in a direction to be pressed Prepare.
　上側ガイド６２は、図７に示すように、搬送路Ｒの上側で、搬送方向Ｄと反対方向に延在して設けられる。上側ガイド６２の下面は、搬送方向Ｄに略平行な、第１下面６２ａと、搬送方向Ｄに対して傾斜した、第２下面６２ｂと、で構成される。 The upper guide 62 is provided on the upper side of the conveyance path R so as to extend in the direction opposite to the conveyance direction D, as shown in FIG. The lower surface of the upper guide 62 is composed of a first lower surface 62 a substantially parallel to the transport direction D and a second lower surface 62 b inclined with respect to the transport direction D.
　下側ガイド６３は、搬送路Ｒの下側に、搬送方向Ｄと反対方向に延在して設けられる。下側ガイド６３の上面は、搬送方向Ｄに略平行な、第１上面６３ａと、搬送方向Ｄに対して傾斜した、第２下面６３ｂと、で構成される。下側ガイド６３は、搬送方向Ｄと反対方向に、上側ガイド６２より長く延在する。 The lower guide 63 is provided on the lower side of the conveyance path R so as to extend in the direction opposite to the conveyance direction D. The upper surface of the lower guide 63 is composed of a first upper surface 63 a substantially parallel to the conveyance direction D and a second lower surface 63 b inclined with respect to the conveyance direction D. The lower guide 63 extends longer than the upper guide 62 in the direction opposite to the transport direction D.
　リアカバー６０は、図６および図７に示すように、リアカバー本体６１から、搬送方向Ｄと反対方向に凹んだ段部６４を有する。段部６４には、除電ブラシ５１が取り付けられる。すなわち、除電ブラシ５１は、搬送方向Ｄで、除電ブラシ５１の上流に配置される段部６４に取り付けられる。 The rear cover 60 has a step 64 recessed from the rear cover main body 61 in the direction opposite to the transport direction D, as shown in FIGS. 6 and 7. The static elimination brush 51 is attached to the step 64. That is, the static elimination brush 51 is attached to the step portion 64 disposed upstream of the static elimination brush 51 in the transport direction D.
　段部６４の下端は、搬送路Ｒに臨むように形成される。これにより、搬送方向Ｄで、カッタフレーム５５の刃取付部５５ａと、段部６４に取り付けられた除電ブラシ５１との間に、間隙が形成される。この間隙は、搬送路Ｒに向かって開口するように形成される。除電ブラシ５１は、搬送路Ｒに搬送された用紙に押され、用紙に接触した状態で、この間隙で撓む。 The lower end of the step portion 64 is formed to face the transport path R. Thus, a gap is formed between the blade attachment portion 55 a of the cutter frame 55 and the discharging brush 51 attached to the stepped portion 64 in the transport direction D. The gap is formed to open toward the conveyance path R. The discharging brush 51 is pressed by the sheet conveyed to the conveyance path R, and in a state of being in contact with the sheet, it is bent at this gap.
　リアカバー６０は、段部６４の下端から、搬送方向Ｄに、刃取付部５５ａに向けて突出する突出部６５を有する。突出部６５は、幅方向Ｅに、等間隔に複数設けられる。突出部６５の下面６５ａは、用紙の搬送方向Ｄに略平行であり、第１下面６２ａと、同一面となる。突出部６５は、刃取付部５５ａに当接させても良い。突出部６５は、刃取付部５５ａと除電ブラシ５１との間の間隙に用紙が入ることを規制する。 The rear cover 60 has a projecting portion 65 that protrudes from the lower end of the step portion 64 in the transport direction D toward the blade attachment portion 55a. A plurality of projecting portions 65 are provided at equal intervals in the width direction E. The lower surface 65a of the projecting portion 65 is substantially parallel to the sheet conveyance direction D, and is the same surface as the first lower surface 62a. The protrusion 65 may be in contact with the blade attachment portion 55a. The protruding portion 65 restricts the sheet from entering the gap between the blade attachment portion 55 a and the static elimination brush 51.
　突出部６５は、除電ブラシ５１の毛束５２ａが設けられる間隔と同じ間隔で設けられ、毛束５２ａと接触しないようになっている。なお、突出部６５と毛束５２ａは、等間隔としなくても良く、突出部６５が、毛束５２ａと接触しなければ良い。 The protrusions 65 are provided at the same intervals as the intervals at which the hair bundles 52a of the static elimination brush 51 are provided, and do not come in contact with the hair bundles 52a. In addition, the protrusion part 65 and the hair bundle 52a do not need to be equal intervals, and the protrusion part 65 does not need to contact the hair bundle 52a.
　除電ブラシ５１が取り付けられた段部６４の面６４ａと、上側ガイド６２の第１下面６２ａとがなす角部には、角が丸められて面取りされた隅Ｒ部６４ｂが形成される。すなわち、第１下面６２ａは、幅方向Ｅにおいて突出部６５がある部分では、突出部６５の下面６５ａに接続され、幅方向Ｅにおいて突出部６５がない部分では、隅Ｒ部６４ｂに接続される。なお、除電ブラシ５１が取り付けられた段部６４の面６４ａと、上側ガイド６２の第１下面６２ａとがなす角部は、平面状に面取りされても良い。 A corner R portion 64b rounded at a corner is formed at an angle portion formed by the surface 64a of the step portion 64 to which the discharging brush 51 is attached and the first lower surface 62a of the upper guide 62. That is, the first lower surface 62a is connected to the lower surface 65a of the projecting portion 65 in the portion having the projecting portion 65 in the width direction E, and is connected to the corner R portion 64b in the portion having no projecting portion 65 in the width direction E . The corner formed by the surface 64a of the step 64 to which the discharging brush 51 is attached and the first lower surface 62a of the upper guide 62 may be chamfered in a planar manner.
　除電ブラシ５１は、両面テープにより、段部６４と後述する付勢部６６とに貼り付けられ、除電ブラシ５１の毛束５２ａが、搬送路Ｒに飛び出すようになっている。 The static elimination brush 51 is attached to the step portion 64 and the urging portion 66 described later by a double-sided tape, and the hair bundle 52 a of the static elimination brush 51 is ejected to the conveyance path R.
　付勢部６６は、図８に示すように、リアカバー６０の、幅方向Ｅの一方端に設けられる。付勢部６６は、弾性を有する弾性部６７と、弾性部６７の先端に設けられた凸部６８とを備える。 The biasing portion 66 is provided at one end in the width direction E of the rear cover 60, as shown in FIG. The biasing portion 66 includes an elastic portion 67 having elasticity and a convex portion 68 provided at the tip of the elastic portion 67.
　弾性部６７は、リアカバー６０の幅方向Ｅの一方端に設けられた開口部６９に設けられる。開口部６９は、リアカバー本体６１と段部６４とに跨るように形成される。開口部６９は、矩形状に形成され、開口部の天面６９ａに、弾性部６７の基端が接続される。開口部６９の側面６９ｂおよび底面６９ｃには、付勢部６６は接続されず、付勢部６６と開口部６９の側面６９ｂおよび底面６９ｃとの間にスリットが形成される。 The elastic portion 67 is provided at an opening 69 provided at one end of the rear cover 60 in the width direction E. The opening 69 is formed to straddle the rear cover main body 61 and the step 64. The opening 69 is formed in a rectangular shape, and the base end of the elastic portion 67 is connected to the top surface 69 a of the opening. The biasing portion 66 is not connected to the side surface 69 b and the bottom surface 69 c of the opening 69, and a slit is formed between the biasing portion 66 and the side surface 69 b and the bottom surface 69 c of the opening 69.
　凸部６８は、弾性部６７の先端から、搬送方向Ｄに、刃取付部５５ａに向けて突出する。凸部６８は、刃取付部５５ａに当接するようになっている。なお、凸部６８は、刃取付部５５ａに干渉するように設計しても良い。 The convex portion 68 protrudes from the tip of the elastic portion 67 in the transport direction D toward the blade attachment portion 55 a. The convex portion 68 is in contact with the blade attachment portion 55a. The convex portion 68 may be designed to interfere with the blade attachment portion 55a.
　このように構成されたリアカバー６０に、除電ブラシ５１を取り付ける。まず、作業者は、図６に示すように、除電ブラシ５１の導電シート５３の端部を、付勢部６６の凸部６８に貼り付ける。次いで、作業者は、導電シート５３を段部６４に貼り付ける。なお、弾性部６７は導電シート５３を貼り付けるための平面を有していても良い。 The static elimination brush 51 is attached to the rear cover 60 configured in this way. First, as shown in FIG. 6, the operator affixes the end of the conductive sheet 53 of the static elimination brush 51 to the convex portion 68 of the biasing portion 66. Next, the worker sticks the conductive sheet 53 to the step 64. The elastic portion 67 may have a flat surface to which the conductive sheet 53 is attached.
　弾性部６７に貼り付けられた導電シート５３が、付勢部６６によって、刃取付部５５ａに向かって付勢され、導電シート５３は、刃取付部５５ａと常時に接触した状態となる。 The conductive sheet 53 attached to the elastic portion 67 is urged toward the blade attachment portion 55a by the urging portion 66, and the conductive sheet 53 is in a state of always in contact with the blade attachment portion 55a.
　実施例１の画像形成装置の作用を説明する。
　実施例１の画像形成装置１は、用紙を搬送する搬送路Ｒと、搬送路Ｒに搬送された用紙に接触して電荷を除電する、搬送路Ｒに一部が突出して設けられると共に、用紙の幅方向Ｅに先端部（毛束５２ａ）が互いに離間して複数設けられる除電手段（除電ブラシ５１）と、用紙の搬送方向Ｄにおいて、除電手段（除電ブラシ５１）の上流または下流の少なくとも一方に、除電手段（除電ブラシ５１）と間隙を有して配置される対向部材（刃取付部５５ａ）と、を備え、除電手段（除電ブラシ５１）は、用紙に接触して、間隙で撓み可能であり、除電手段（除電ブラシ５１）の先端部（毛束５２ａ）間に設けられる、間隙に用紙が入ることを規制する少なくとも１つの規制部を備える（図７）。 The operation of the image forming apparatus of the first embodiment will be described.
The image forming apparatus 1 according to the first exemplary embodiment is provided with a conveyance path R for conveying a sheet, and a portion protruding from the conveyance path R for discharging charges by contacting the sheet conveyed to the conveyance path R. And at least one of an upstream side or a downstream side of the charge removing unit (charge removing brush 51) in the sheet conveying direction D, and a plurality of charge removing units (charge removing brush 51) And the opposing member (the blade mounting portion 55a) disposed with a gap between the discharging unit (the discharging brush 51), and the discharging unit (the discharging brush 51) contacts the paper and can be bent at the gap And at least one restricting portion provided between the tip portions (hair bundles 52a) of the discharging means (the discharging brush 51), which restricts the sheet from entering the gap (FIG. 7).
　対向部材（刃取付部５５ａ）が、除電手段（除電ブラシ５１）と間隙を有して配置されることで、除電手段（除電ブラシ５１）が搬送される用紙に押されたとき、除電手段（除電ブラシ５１）の先端部（毛束５２ａ）は、撓んで用紙に接触する。そのため、除電手段（除電ブラシ５１）を用紙に確実に接触させることができ、用紙に帯電した電荷の除電の信頼性を向上させることができる。 When the opposing member (the blade attachment portion 55a) is disposed with a gap from the discharging unit (the discharging brush 51), the discharging unit (the discharging brush 51) is pressed against the sheet to be transported. The tip (hair bundle 52a) of the static elimination brush 51) bends and contacts the sheet. Therefore, the discharging means (the discharging brush 51) can be reliably brought into contact with the sheet, and the reliability of the discharging of the charge on the sheet can be improved.
　また、除電手段（除電ブラシ５１）と対向部材（刃取付部５５ａ）との間隙に用紙が入ることを規制する規制部（突出部６５）を備えることで、用紙が間隙に入り込まないようにすることができる。そのため、紙詰まりが発生することを防止することができる。 Further, by providing a regulating portion (protruding portion 65) for regulating the sheet from entering the gap between the discharging means (the discharging brush 51) and the opposing member (the blade attaching portion 55a), the sheet is prevented from entering the gap. be able to. Therefore, occurrence of paper jam can be prevented.
　ところで、搬送路を高くすることで、除電手段と対向部材との間に間隙を有しなくても、除電ブラシを搬送路内で撓ませることができる。その理由は、搬送路内に延びる毛束の長さが長くなり、毛束が撓みやすくなるためである。しかし、搬送路を高くしてしまうと、搬送路内で用紙の先端が丸まり、用紙が排出口から排出されない、という問題がある。さらに、搬送路内で丸まった用紙を排出するために、排出口の高さを高くすると、この排出口にユーザが指を入れてしまう、という問題もある。実施例１では、除電手段と対向部材との間隙に用紙が入ることを規制する規制部を備えることで、このような問題を解決する。 By raising the transport path, the static elimination brush can be bent in the transport path without having a gap between the static elimination means and the opposing member. The reason is that the length of the hair bundle extending into the transport path is long, and the hair bundle is easily bent. However, when the transport path is made high, there is a problem that the leading end of the sheet is rounded in the transport path and the sheet is not discharged from the discharge port. Furthermore, if the height of the discharge port is increased in order to discharge the sheet which has been rolled in the transport path, there is a problem that the user puts a finger in the discharge port. In the first embodiment, such a problem is solved by providing a restricting portion that restricts the sheet from entering the gap between the charge removing unit and the facing member.
　実施例１では、除電手段（除電ブラシ５１）は、搬送方向Ｄで、除電手段（除電ブラシ５１）の上流または下流に配置される取付部材（リアカバー６０）に取り付けられ、規制部（突出部６５）は、取付部材（リアカバー６０）から対向部材（刃取付部５５ａ）に向けて突出する突出部である（図７）。 In the first embodiment, the charge removing device (the charge removing brush 51) is attached to the attachment member (rear cover 60) disposed upstream or downstream of the charge removing device (the charge removing brush 51) in the transport direction D. ) Is a projection which protrudes from the mounting member (rear cover 60) toward the opposing member (the blade mounting portion 55a) (FIG. 7).
　これにより、別部品を設けることなく、規制部（突出部６５）を取付部材（リアカバー６０）に形成することができる。そのため、部品点数を削減することができる。 Thus, the restricting portion (projecting portion 65) can be formed on the mounting member (rear cover 60) without providing a separate part. Therefore, the number of parts can be reduced.
　実施例１では、規制部（突出部６５）は、除電手段（除電ブラシ５１）の先端部（毛束５２ａ）に接触しない位置に設ける（図６）。 In the first embodiment, the restricting portion (projecting portion 65) is provided at a position not in contact with the tip portion (hair bundle 52a) of the static elimination unit (static charge brush 51) (FIG. 6).
　これにより、除電手段（除電ブラシ５１）の毛束５２ａは、規制部（突出部６５）を避けるように、離間して配置される。そのため、除電手段（除電ブラシ５１）を規制部（突出部６５）に干渉させない状態で、除電手段（除電ブラシ５１）を取付部材（リアカバー６０）に容易に取り付けることができる。 Thereby, the hair bundle 52a of the discharging unit (the discharging brush 51) is spaced apart and disposed so as to avoid the regulating portion (the projecting portion 65). Therefore, the static elimination means (static elimination brush 51) can be easily attached to the attachment member (rear cover 60) in a state where the static elimination means (static elimination brush 51) does not interfere with the regulating portion (projecting portion 65).
　実施例１では、除電手段（除電ブラシ５１）の先端部（毛束５２ａ）は、幅方向Ｅに等間隔で配置され、規制部（突出部６５）は、幅方向Ｅに等間隔で配置される（図６）。 In the first embodiment, the tip portions (hair bundle 52a) of the discharging unit (the discharging brush 51) are arranged at equal intervals in the width direction E, and the regulating units (projections 65) are arranged at equal intervals in the width direction E (Figure 6).
　これにより、様々なサイズの用紙が間隙に入り込まないようにする。また、用紙がよじれてしまった場合にも、よじれた用紙が間隙に入り込まないようにする。そのため、様々な用紙に対して、紙詰まりが発生することを防止することができる。 This prevents sheets of various sizes from entering the gap. Also, even if the paper is twisted, the twisted paper is prevented from entering the gap. Therefore, it is possible to prevent the occurrence of a paper jam for various types of paper.
　実施例１では、取付部材（リアカバー６０）は、搬送路Ｒの上側に設けられる、搬送方向Ｄと反対方向に延在する上側ガイド（上側ガイド６２）と、搬送路Ｒの下側に設けられる、搬送方向Ｄと反対方向に延在する下側ガイド（下側ガイド６３）と、を備え、上側ガイド（上側ガイド６２）および下側ガイド（下側ガイド６３）は、取付部材（リアカバー６０）と一体に成形される（図５）。 In the first embodiment, the mounting member (rear cover 60) is provided on the upper side of the conveyance path R, and is provided on the lower side of the conveyance path R and an upper guide (upper guide 62) extending in the direction opposite to the conveyance direction D. And a lower guide (lower guide 63) extending in the direction opposite to the transport direction D, and the upper guide (upper guide 62) and the lower guide (lower guide 63) are attachment members (rear cover 60). And one-piece molding (Fig. 5).
　これにより、別部品を設けることなく、上側ガイド（上側ガイド６２）および下側ガイド（下側ガイド６３）を取付部材（リアカバー６０）に形成することができる。そのため、部品点数を削減することができる。 Thereby, the upper guide (upper guide 62) and the lower guide (lower guide 63) can be formed on the mounting member (rear cover 60) without providing separate components. Therefore, the number of parts can be reduced.
　実施例１では、突出部６５の下面は、上側ガイド（上側ガイド６２）の下面と、略面一である（図７）。 In the first embodiment, the lower surface of the protrusion 65 is substantially flush with the lower surface of the upper guide (upper guide 62) (FIG. 7).
　これにより、搬送される用紙が、少しでも除電手段（除電ブラシ５１）と対向部材（刃取付部５５ａ）との間隙に入り込むことを防止する。そのため、紙詰まりが発生することをより確実に防止することができる。 As a result, it is possible to prevent the sheet to be conveyed from entering the gap between the discharging unit (the discharging brush 51) and the opposing member (the blade attachment portion 55a). Therefore, the occurrence of paper jam can be more reliably prevented.
　実施例１では、除電手段（除電ブラシ５１）が取り付けられた取付部材（リアカバー６０）の面と、上側ガイド（上側ガイド６２）の下面と、がなす角部が面取りされる（図７）。 In the first embodiment, the corner formed by the surface of the mounting member (rear cover 60) to which the discharging means (the discharging brush 51) is attached and the lower surface of the upper guide (upper guide 62) is chamfered (FIG. 7).
　これにより、用紙を搬送方向Ｄと逆の方向に逆走させたとき、除電手段（除電ブラシ５１）を搬送方向Ｄとは逆の方向に大きく撓ませることができる。そのため、除電手段（除電ブラシ５１）が用紙の逆走を極力阻害しないようにすることができる。 As a result, when the sheet is reversely moved in the direction opposite to the conveying direction D, the discharging means (the discharging brush 51) can be largely bent in the direction opposite to the conveying direction D. Therefore, the discharging means (the discharging brush 51) can be made to inhibit the reverse running of the sheet as much as possible.
　ところで、従来の除電ブラシを接地する接地構造では、除電ブラシと接続する部品として、導電性の金属片と、この金属片を、除電ブラシに接触させた状態で除電ブラシ側に押圧する金属製の押圧部材と、を用いて構成されたものがある。この押圧部材は、さらに、アース線によって接地された金属ブラケットなどの金属部品に接続される。このように、除電ブラシが金属片と押圧部材とを介して接地された金属部品に接続される構成では、除電ブラシを接地するために、多くの接続部品を必要とする、という問題がある。 By the way, in the conventional grounding structure for grounding the static elimination brush, as a component to be connected to the static elimination brush, a conductive metal piece and a metal made of a metal that presses this metallic piece to the static elimination brush in contact with the static elimination brush There is one configured by using a pressing member. The pressing member is further connected to a metal part such as a metal bracket grounded by a ground wire. As described above, in the configuration in which the discharging brush is connected to the grounded metal part via the metal piece and the pressing member, there is a problem that many connecting parts are required to ground the discharging brush.
　これに対し、実施例１では、除電手段（除電ブラシ５１）は、用紙と接触する除電部（ブラシ部５２）と、除電部（ブラシ部５２）を支持する、導電性があり、且つ、柔軟性がある、支持部（導電シート５３）と、を備え、取付部材（リアカバー６０）は、導電性がある対向部材（刃取付部５５ａ）に向けて付勢力を有する付勢部６６を備え、支持部（導電シート５３）の一部は、付勢部６６に取り付けられる（図９）。 On the other hand, in the first embodiment, the charge removing unit (the charge removing brush 51) is conductive and supports the charge removing unit (brush unit 52) in contact with the sheet and the charge removing unit (brush unit 52). The mounting member (rear cover 60) includes a biasing portion 66 having a biasing force toward the conductive opposing member (the blade mounting portion 55a), A part of the support portion (conductive sheet 53) is attached to the biasing portion 66 (FIG. 9).
　これにより、除電手段（除電ブラシ５１）の支持部（導電シート５３）を、付勢部６６によって、導電性の金属材である対向部材（刃取付部５５ａ）に接触させることができる。そのため、少ない部品で、かつ、簡易な構成で、用紙の除電によって除電手段（除電ブラシ５１）が帯びた電荷を、対向部材（刃取付部５５ａ）に逃がすことができる。 As a result, the support portion (conductive sheet 53) of the discharging means (the discharging brush 51) can be brought into contact with the opposing member (the blade mounting portion 55a) which is a conductive metal material by the biasing portion 66. Therefore, the charge carried by the discharging means (the discharging brush 51) can be released to the opposing member (the blade attachment portion 55a) by discharging the sheet with a small number of parts and a simple configuration.
　実施例１では、取付部材（リアカバー６０）は、樹脂製であり、付勢部６６は、弾性を有する弾性部６７と、弾性部６７の先端に、対向部材（刃取付部５５ａ）に向けて突出する凸部６８と、を備える（図９）。 In the first embodiment, the mounting member (rear cover 60) is made of resin, and the biasing portion 66 is directed toward the opposing member (the blade mounting portion 55a) at the elastic portion 67 having elasticity and the tip of the elastic portion 67. And a protruding protrusion 68 (FIG. 9).
　これにより、付勢部６６を樹脂成型により容易に形成することができる。そのため、別部品を設けることなく、付勢部６６を取付部材（リアカバー６０）に形成することができ、部品点数を削減することができる。 Thus, the biasing portion 66 can be easily formed by resin molding. Therefore, the biasing portion 66 can be formed on the mounting member (rear cover 60) without providing a separate part, and the number of parts can be reduced.
　実施例１では、付勢部６６は、幅方向Ｅにおいて、支持部（導電シート５３）の端部に設けられる（図６）。 In the first embodiment, the biasing portion 66 is provided at the end of the support portion (conductive sheet 53) in the width direction E (FIG. 6).
　これにより、支持部（導電シート５３）の一端を付勢部６６に取り付けることができる。そのため、付勢部６６の付勢力を活かすことができる。この点、付勢部が、例えば支持部の中央部に設けられた場合、両面テープ等で段部に貼り付けられた導電シートが、付勢部を、その両側から引っ込んだ状態に押さえ付けてしまい、付勢部の付勢力が作用しなくなる、という問題がある。 Thus, one end of the support portion (conductive sheet 53) can be attached to the biasing portion 66. Therefore, the biasing force of the biasing unit 66 can be utilized. In this respect, when the biasing portion is provided at, for example, the central portion of the support portion, the conductive sheet attached to the step portion with double-sided tape or the like holds down the biasing portion in a state of being retracted from both sides. As a result, there is a problem that the biasing force of the biasing unit does not act.
　まず、構成を説明する。
　図１０は、実施例２の画像形成装置の構成を示す断面図である。図１１は、実施例２の突出部を拡大して示す断面図である。以下、図１０および図１１に基づいて、実施例２の画像形成装置の構成を説明する。なお、実施例１で説明した内容と同一乃至均等な部分の説明については、同一用語又は同一の符号を用いて説明する。 First, the configuration will be described.
FIG. 10 is a cross-sectional view showing the configuration of the image forming apparatus of the second embodiment. FIG. 11 is an enlarged cross-sectional view of the protrusion of the second embodiment. Hereinafter, the configuration of the image forming apparatus of the second embodiment will be described based on FIGS. 10 and 11. FIG. The same or equivalent parts as the contents described in the first embodiment will be described using the same terms or the same reference numerals.
　実施例２の画像形成装置１０１は、主にカッタ装置を備えない点で、実施例１の画像形成装置と相違する。 The image forming apparatus 101 according to the second embodiment is different from the image forming apparatus according to the first embodiment in that the image forming apparatus 101 according to the second embodiment mainly includes no cutter device.
　サーマルヘッドユニット２１は、図１０に示すように、印刷ヘッドなど各種部品が取り付けられるアッパフレーム１６０を備える。アッパフレーム１６０は、樹脂部品であり、図１１に示すように、対向部材としてのカバー１２０の前壁１２０ａに対向して配置される取付部材としてのフレーム壁１６０ａを有する。 As shown in FIG. 10, the thermal head unit 21 includes an upper frame 160 to which various components such as a print head are attached. The upper frame 160 is a resin component, and as shown in FIG. 11, has a frame wall 160a as an attachment member disposed opposite to the front wall 120a of the cover 120 as an opposite member.
　フレーム壁１６０ａの下端は、搬送路Ｒに臨むように形成される。搬送方向Ｄで、前壁１２０ａと、フレーム壁１６０ａに後述するグランドプレート１８０を介して取り付けられた除電ブラシ５１との間に、間隙が形成される。この間隙は、搬送路Ｒに向かって開口するように形成される。除電ブラシ５１は、搬送路Ｒに搬送された用紙に押され、用紙に接触した状態で、この間隙で撓む。 The lower end of the frame wall 160 a is formed to face the transport path R. In the transport direction D, a gap is formed between the front wall 120 a and the discharging brush 51 attached to the frame wall 160 a via a ground plate 180 described later. The gap is formed to open toward the conveyance path R. The discharging brush 51 is pressed by the sheet conveyed to the conveyance path R, and in a state of being in contact with the sheet, it is bent at this gap.
　アッパフレーム１６０は、フレーム壁１６０ａの下端から、搬送方向Ｄに、前壁１２０ａに向けて突出する規制部としての突出部１６５を有する。突出部１６５は、実施例１に示した幅方向Ｅに、等間隔に複数設けられる。突出部１６５の下面１６５ａは、用紙の搬送方向Ｄに略平行であり、フレーム壁１６０ａの下面１６２ａと、同一面となる。突出部１６５は、前壁１２０ａに当接させても良い。 The upper frame 160 has a protrusion 165 as a restricting portion that protrudes toward the front wall 120 a in the transport direction D from the lower end of the frame wall 160 a. A plurality of projecting portions 165 are provided at equal intervals in the width direction E shown in the first embodiment. The lower surface 165a of the projecting portion 165 is substantially parallel to the sheet conveyance direction D, and is in the same plane as the lower surface 162a of the frame wall 160a. The protrusion 165 may abut on the front wall 120a.
　突出部１６５は、除電ブラシ５１の毛束５２ａが設けられる間隔と同じ間隔で幅方向Ｅに設けられ、毛束５２ａと接触しないようになっている。なお、突出部１６５と毛束５２ａは、等間隔に設けられなくても良く、突出部１６５が、毛束５２ａと接触しなければ良い。 The projecting portion 165 is provided in the width direction E at the same interval as the interval at which the hair bundle 52a of the static elimination brush 51 is provided, and does not contact the hair bundle 52a. In addition, the protrusion part 165 and the hair bundle 52a do not need to be provided at equal intervals, and the protrusion part 165 does not need to contact the hair bundle 52a.
　除電ブラシ５１が取り付けられるフレーム壁１６０ａの面と、フレーム壁１６０ａの下面１６２ａとがなす角部には、角が丸められて面取りされた隅Ｒ部１６４ｂが形成される。すなわち、フレーム壁１６０ａの下面１６２ａは、幅方向Ｅで突出部１６５がある部分では、突出部１６５の下面１６５ａに接続され、幅方向Ｅで突出部１６５がない部分では、隅Ｒ部１６４ｂに接続される。なお、除電ブラシ５１が取り付けられるフレーム壁１６０ａの面と、フレーム壁１６０ａの下面１６２ａとがなす角部は、平面状に面取りされても良い。 A corner R-portion 164b rounded at a corner is formed at the corner between the surface of the frame wall 160a to which the static elimination brush 51 is attached and the lower surface 162a of the frame wall 160a. That is, the lower surface 162a of the frame wall 160a is connected to the lower surface 165a of the projecting portion 165 in the portion where the projecting portion 165 is in the width direction E, and is connected to the corner R portion 164b in the portion where the projecting portion 165 is not in the width direction E Be done. The corner formed by the surface of the frame wall 160a to which the discharging brush 51 is attached and the lower surface 162a of the frame wall 160a may be chamfered in a planar manner.
　カバー１２０の外表面とカバー１２０の搬送路Ｒに面する下面は、排出口１５９の上側で角部を成している。同様に、ロアーケース１１０の外表面とロアーケース１１０の搬送路Ｒに面する上面は、排出口１５９の下側で角部を成している。ユーザは、排出口１５９から排出された用紙を排出口１５９の上側または下側の角部のいずれかに押し当てて、切断することができる。 The outer surface of the cover 120 and the lower surface facing the transport path R of the cover 120 form a corner on the upper side of the discharge port 159. Similarly, the outer surface of the lower case 110 and the upper surface facing the conveyance path R of the lower case 110 form a corner below the discharge port 159. The user can cut the sheet discharged from the discharge port 159 by pressing it against either the upper or lower corner of the discharge port 159.
　アッパフレーム１６０には、除電ブラシ５１が貼り付けられるグランドプレート１８０と、グランドプレートに接触する弾性体であるグランドスプリング１８１と、ヘッドを支持するヘッドブラケット１９５などが取り付けられる。 Attached to the upper frame 160 are a ground plate 180 to which the static elimination brush 51 is attached, a ground spring 181 which is an elastic body contacting the ground plate, a head bracket 195 for supporting the head, and the like.
　グランドプレート１８０は、導電性の金属で、プレート状に形成される。グランドプレート１８０には、除電ブラシ５１が、導電性の両面テープによって貼り付けられる。グランドプレート１８０に貼り付けられた除電ブラシ５１は、ブラシ部５２の一部が搬送路Ｒに突出するように、グランドプレート１８０に貼り付けられる。ブラシ部５２は、搬送路Ｒに搬送された用紙に接触して、用紙に帯電した電荷を除電する。グランドプレート１８０は、ビス１９２によって、アッパフレーム１６０に取り付けられる。 The ground plate 180 is formed of a conductive metal in a plate shape. The static elimination brush 51 is attached to the ground plate 180 by a conductive double-sided tape. The static elimination brush 51 attached to the ground plate 180 is attached to the ground plate 180 such that a part of the brush portion 52 protrudes into the transport path R. The brush unit 52 contacts the sheet transported to the transport path R, and removes the charge on the sheet. The ground plate 180 is attached to the upper frame 160 by screws 192.
　アッパフレーム１６０は、グランドスプリング１８１を収容する収容部１６１を有する。グランドスプリング１８１は、導電性で弾性を有する金属で、線状に形成される。グランドスプリング１８１は、一方端がグランドプレート１８０に接触し、搬送方向と反対方向に線状に延びる他方端がヘッドブラケット１９５に接触する。ヘッドブラケット１９５は、導電性のある金属で形成される。ヘッドブラケット１９５は、アース線（図示せず）に接続されて接地される。 The upper frame 160 has a housing portion 161 for housing the ground spring 181. The ground spring 181 is formed of a conductive and elastic metal in a linear shape. The ground spring 181 has one end in contact with the ground plate 180 and the other end extending linearly in the direction opposite to the transport direction in contact with the head bracket 195. The head bracket 195 is formed of conductive metal. The head bracket 195 is connected to a ground wire (not shown) and grounded.
　このように、本発明は、カッタ装置を有しない構成にも適用でき、実施例１と同様の作用効果を奏する。 As described above, the present invention can be applied to a configuration that does not have a cutter device, and exhibits the same effects as the first embodiment.
　以上、本開示の画像形成装置を実施例１および実施例２に基づき説明してきた。しかし、具体的な構成については、これらの実施例に限られるものではなく、請求の範囲の各請求項に係る発明の要旨を逸脱しない限り、各実施例の組み合わせ、設計の変更や追加等は許容される。 The image forming apparatus of the present disclosure has been described above based on the first and second embodiments. However, the specific configuration is not limited to these examples, and combinations of the examples, changes in design, addition, etc. are possible unless they deviate from the scope of the invention according to each claim of the claims. Permissible.
　実施例１および実施例２では、突出部６５，１６５を、搬送方向Ｄにおいて、除電ブラシ５１より上流側に設けられた取付部材（リアカバー６０，フレーム壁１６０ａ）に設ける例を示した。しかし、突出部としては、搬送方向Ｄにおいて、除電ブラシ５１より下流側に設けられた対向部材に設けても良い。 In the first embodiment and the second embodiment, an example in which the projecting portions 65 and 165 are provided on the mounting member (rear cover 60, frame wall 160a) provided on the upstream side of the discharging brush 51 in the transport direction D is shown. However, the protrusion may be provided on the opposing member provided downstream of the static elimination brush 51 in the transport direction D.
　さらに、複数の突出部６５，１６５を、幅方向Ｅに連結部材で連結してユニット化し、取付部材や対向部材とは別体の部品として形成しても良い。この場合は、ユニット化された複数の突出部を、取付部材や対向部材の少なくともいずれかに固定する。 Furthermore, the plurality of projecting portions 65 and 165 may be united by connecting members in the width direction E by a connecting member, and may be formed as a separate component from the mounting member and the opposing member. In this case, the plurality of unitized projections are fixed to at least one of the attachment member and the opposing member.
　実施例１および実施例２では、突出部６５，１６５を、幅方向Ｅに複数設ける例を示した。しかし、突出部としては、幅方向Ｅに少なくとも１つ設けても良い。少なくとも、突出部６５，１６５を設けた部分では、紙詰まりの発生を防止する効果が得られる。突出部６５，１６５は、紙詰まりが発生しやすい位置や、紙詰まりの頻度などに応じて、必要な個数だけ設けることができる。 In Example 1 and Example 2, the example which provides multiple protrusion parts 65 and 165 in the width direction E was shown. However, at least one protrusion may be provided in the width direction E. At least at the portion where the protruding portions 65 and 165 are provided, the effect of preventing the occurrence of paper jam can be obtained. The protruding portions 65 and 165 can be provided in the necessary number according to the position where paper jam is likely to occur, the frequency of the paper jam, and the like.
　実施例１および実施例２では、搬送方向Ｄにおいて、除電手段の下流に、除電手段と間隙を有して配置される対向部材を設ける例を示した。しかし、搬送方向Ｄにおいて、除電手段の上流に、除電手段と間隙を有して配置される対向部材を設けても良いし、搬送方向Ｄにおいて、除電手段の上流および下流に、除電手段と間隙を有して配置される対向部材を設けても良い。 In Example 1 and Example 2, the example which provides the opposing member arrange | positioned with a static elimination means and a space | interval in the conveyance direction D downstream of the static elimination means was shown. However, in the transport direction D, an opposing member may be provided upstream of the static elimination means with a gap between the static elimination means, and in the transport direction D, upstream and downstream of the static elimination means in the transport direction D An opposing member may be provided to be disposed.
　具体的には、例えば、実施例２の場合では、前壁１２０ａの搬送方向Ｄの上流側壁面に、除電ブラシ５１が貼り付けられた導電シート５３を直接貼り付けても良い。この場合、前壁１２０ａは、搬送方向Ｄにおいて、除電ブラシ５１の下流に配置される取付部材として構成される。また、前壁１２０ａは対向部材でもあり、前壁１２０ａの導電シート５３の貼り付け面と、前壁１２０ａの搬送路Ｒに面する下面とがなす角部に、大きな隅Ｒ部を形成し、毛束５２ａと隅Ｒ部との間に間隙を形成する。毛束５２ａは、毛束５２ａと隅Ｒ部との間の間隙によって、搬送方向Ｄに十分に変形することができる。この構成の場合も、突出部１６５を、前壁１２０ａまたはフレーム壁１６０ａのいずれかに設けることができる。 Specifically, for example, in the case of the second embodiment, the conductive sheet 53 to which the discharging brush 51 is attached may be directly attached to the upstream side wall surface in the transport direction D of the front wall 120a. In this case, the front wall 120 a is configured as a mounting member disposed downstream of the static elimination brush 51 in the transport direction D. Further, the front wall 120a is also a facing member, and a large corner R portion is formed at a corner formed by the affixing surface of the conductive sheet 53 of the front wall 120a and the lower surface facing the transport path R of the front wall 120a. A gap is formed between the hair bundle 52a and the corner R portion. The hair bundle 52a can be sufficiently deformed in the transport direction D by the gap between the hair bundle 52a and the corner R portion. Also in this configuration, the protrusions 165 can be provided on either the front wall 120a or the frame wall 160a.
　また、この構成において、搬送方向Ｄにおいて、除電ブラシ５１の上流側に配置されるフレーム壁１６０ａが、もう一つの対向部材として、除電ブラシ５１と間隙を有して配置されても良い。この場合には、突出部１６５を、フレーム壁１６０ａと除電ブラシ５１との間の間隙に形成する。これにより、搬送方向Ｄにおける除電ブラシ５１の上流側の間隙に、用紙の先端が入り込み、用紙が詰まることを防止することができる。なお、同様な構成は、実施例１にも適用することができる。 Further, in this configuration, the frame wall 160a disposed on the upstream side of the static elimination brush 51 in the transport direction D may be disposed with a gap from the static elimination brush 51 as another opposing member. In this case, the protrusion 165 is formed in the gap between the frame wall 160 a and the static elimination brush 51. As a result, it is possible to prevent the leading edge of the sheet from entering the gap on the upstream side of the static elimination brush 51 in the transport direction D, thereby preventing the sheet from being jammed. The same configuration can be applied to the first embodiment.
　実施例１および実施例２では、除電手段を、除電ブラシとする例を示した。しかし、除電手段としては、導電性の不織布を櫛歯状に形成したものを用いても良い。すなわち、ブラシ状ではなくても、搬送路Ｒに搬送された用紙に接触して、用紙の搬送を妨げない程度に除電手段と対向部材との間で変形するものであれば良い。 In Example 1 and Example 2, the example which uses a static elimination brush as a static elimination brush was shown. However, as the static elimination means, one having a conductive non-woven fabric formed in a comb shape may be used. That is, even if it does not have a brush shape, it may be one that contacts the sheet conveyed to the conveyance path R and deforms between the charge removing unit and the opposing member to such an extent that the conveyance of the sheet is not impeded.
　実施例１および実施例２では、対向部材として、刃取付部５５ａ、前壁１２０ａ、フレーム壁１６０ａなど、除電手段の長手方向の全域にわたって対向する例を示した。しかし、対向部材は、除電手段の長手方向の一部に対向していても良い。 In the first and second embodiments, an example is shown in which the blade mounting portion 55a, the front wall 120a, the frame wall 160a, and the like are opposed as the opposing members over the entire area in the longitudinal direction of the static elimination unit. However, the opposing member may be opposed to a part of the static elimination means in the longitudinal direction.
　実施例１および実施例２では、複数の除電手段を、幅方向Ｅに均等に設ける例を示した。しかし、除電手段としては、均等に配置されなくても良い。 In Example 1 and Example 2, the example which provides several static elimination means equally to the width direction E was shown. However, the discharging means may not be evenly arranged.
　実施例１および実施例２では、除電手段を搬送路Ｒの上側から下側に突出するように配置する例を示した。しかし、除電手段としては、搬送路の下側から上側に突出するように配置しても良い。この場合は、除電手段と対向部材、および、突出部も搬送路の下側に設けられる。 In Example 1 and Example 2, the example which arrange | positions so that a static elimination means may protrude downward from the upper side of conveyance path R was shown. However, the discharging means may be arranged to project upward from the lower side of the transport path. In this case, the charge removing means, the opposing member, and the protrusion are also provided on the lower side of the transport path.
　実施例１および実施例２では、除電手段は、複数の毛束５２ａを有する例を示した。しかし、除電手段としては、毛束を様々な形状とすることができ、例えば帯状に形成しても良い。 In Example 1 and Example 2, the static elimination means showed the example which has the some hair bundle 52a. However, as a static elimination means, a hair bundle can be made into various shapes, for example, you may form in strip shape.
　実施例１および実施例２では、画像形成装置をサーマルプリンタに適用する例を示した。しかし、画像形成装置としては、インパクト方式のプリンタ、レーザプリンタ、インクジェットプリンタ等に適用可能である。 In the first and second embodiments, the image forming apparatus is applied to a thermal printer. However, the image forming apparatus can be applied to an impact type printer, a laser printer, an ink jet printer, and the like.
関連出願の相互参照Cross-reference to related applications
　本出願は、２０１７年１２月２６日に日本国特許庁に出願された特願２０１７－２４９１１９に基づいて優先権を主張し、その全ての開示は完全に本明細書で参照により組み込まれる。
  This application claims priority based on Japanese Patent Application No. 2017-249119 filed with the Japanese Patent Office on Dec. 26, 2017, the entire disclosure of which is incorporated herein by reference in its entirety.

Claims (12)

  1. 　用紙を搬送する搬送路と、
    　前記搬送路に搬送された前記用紙に接触して電荷を除電する、前記搬送路に一部が突出して設けられると共に、前記用紙の幅方向に先端部が互いに離間して複数設けられる除電手段と、
    　前記用紙の搬送方向において、前記除電手段の上流または下流の少なくとも一方に、前記除電手段と間隙を有して配置される対向部材と、を備え、
    　前記除電手段は、前記用紙に接触して、前記間隙で撓み可能であり、
    　前記除電手段の先端部間に設けられる、前記間隙に前記用紙が入ることを規制する少なくとも１つの規制部を備える
    　ことを特徴とする画像形成装置。     A transport path for transporting the sheet;
    Charge removing means for discharging charges by contacting the sheet conveyed to the conveyance path, a portion projecting from the conveyance path, and a plurality of tips separated from each other in the width direction of the sheet; ,
    And an opposing member disposed at least one of upstream and downstream of the charge removing unit in the sheet conveyance direction, with a gap from the charge removing unit,
    The charge removing means can be bent at the gap by contacting the sheet.
    An image forming apparatus comprising: at least one restricting portion provided between the leading end portions of the charge removing unit, which restricts the sheet from entering the gap.
  2. 　前記除電手段は、前記搬送方向で、前記除電手段の上流または下流に配置される取付部材に取り付けられ、
    　前記規制部は、前記取付部材から前記対向部材に向けて突出する突出部である
    　ことを特徴とする、請求項１に記載の画像形成装置。     The charge removing unit is attached to a mounting member disposed upstream or downstream of the charge removing unit in the transport direction.
    The image forming apparatus according to claim 1, wherein the restriction portion is a protruding portion that protrudes from the attachment member toward the opposing member.
  3. 　前記規制部は、前記除電手段の先端部に接触しない位置に設ける
    　ことを特徴とする、請求項２に記載の画像形成装置。     The image forming apparatus according to claim 2, wherein the restriction portion is provided at a position not in contact with the front end portion of the charge removing unit.
  4. 　前記規制部は、前記用紙の幅方向に複数設けられ、
    　それぞれの前記規制部は、それぞれの前記先端部間に設けられる
    　ことを特徴とする、請求項１から３の何れか一項に記載の画像形成装置。     A plurality of the restriction portions are provided in the width direction of the sheet,
    The image forming apparatus according to any one of claims 1 to 3, wherein each of the restriction portions is provided between the respective tip portions.
  5. 　前記除電手段の先端部は、前記幅方向に等間隔で配置され、
    　前記規制部は、前記幅方向に等間隔で配置される
    　ことを特徴とする、請求項４に記載の画像形成装置。     The tip portions of the charge removing means are arranged at equal intervals in the width direction,
    The image forming apparatus according to claim 4, wherein the restriction portions are arranged at equal intervals in the width direction.
  6. 　前記取付部材は、前記搬送方向で、前記除電手段の上流に配置される
    　ことを特徴とする、請求項１から５の何れか一項に記載の画像形成装置。     The image forming apparatus according to any one of claims 1 to 5, wherein the mounting member is disposed upstream of the charge removing unit in the transport direction.
  7. 　前記取付部材は、
    　前記搬送路の上側に設けられる、前記搬送方向と反対方向に延在する上側ガイドと、
    　前記搬送路の下側に設けられる、前記搬送方向と反対方向に延在する下側ガイドと、を備え、
    　前記上側ガイドおよび前記下側ガイドは、前記取付部材と一体に成形される
    　ことを特徴とする、請求項６に記載の画像形成装置。     The mounting member is
    An upper guide provided on the upper side of the transport path and extending in a direction opposite to the transport direction;
    And a lower guide provided on the lower side of the transport path and extending in the direction opposite to the transport direction.
    The image forming apparatus according to claim 6, wherein the upper guide and the lower guide are integrally formed with the mounting member.
  8. 　前記突出部の下面は、前記上側ガイドの下面と、略面一である
    　ことを特徴とする、請求項７に記載の画像形成装置。     The image forming apparatus according to claim 7, wherein the lower surface of the protrusion is substantially flush with the lower surface of the upper guide.
  9. 　前記除電手段が取り付けられた前記取付部材の面と、前記上側ガイドの下面と、がなす角部が面取りされる
    　ことを特徴とする、請求項７または８に記載の画像形成装置。     The image forming apparatus according to claim 7, wherein a corner portion formed by the surface of the mounting member to which the charge removing unit is attached and the lower surface of the upper guide is chamfered.
  10. 　前記除電手段は、
    　前記用紙と接触する除電部と、
    　前記除電部を支持する、導電性があり、且つ、柔軟性がある、支持部と、を備え、
    　前記取付部材は、導電性がある前記対向部材に向けて付勢力を有する付勢部を備え、
    　前記支持部の一部は、前記付勢部に取り付けられる
    　ことを特徴とする、請求項２から９の何れか一項に記載の画像形成装置。     The charge removing means is
    A charge removing unit in contact with the sheet;
    A conductive and flexible support portion for supporting the charge removal portion;
    The mounting member includes a biasing portion having a biasing force toward the conductive opposing member,
    The image forming apparatus according to any one of claims 2 to 9, wherein a part of the support portion is attached to the biasing portion.
  11. 　前記取付部材は、樹脂製であり、
    　前記付勢部は、
    　弾性を有する弾性部と、
    　前記弾性部の先端に、前記対向部材に向けて突出する凸部と、を備える
    　ことを特徴とする、請求項１０に記載の画像形成装置。     The mounting member is made of resin,
    The urging unit is
    An elastic portion having elasticity;
    The image forming apparatus according to claim 10, further comprising: a convex portion protruding toward the opposing member at a tip end of the elastic portion.
  12. 　前記付勢部は、前記幅方向において、前記支持部の端部に設けられる
    　ことを特徴とする、請求項１０または１１に記載の画像形成装置。     The image forming apparatus according to claim 10, wherein the biasing unit is provided at an end of the support unit in the width direction.
PCT/JP2018/044507 2017-12-26 2018-12-04 Image forming device WO2019131009A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-249119 2017-12-26
JP2017249119A JP7066400B2 (en) 2017-12-26 2017-12-26 Image forming device

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001100535A (en) * 1999-09-28 2001-04-13 Kyocera Mita Corp Charge neutralizing device for image forming device
JP2004213952A (en) * 2002-12-27 2004-07-29 Kyocera Mita Corp Mounting structure of discharging member
JP2005335902A (en) * 2004-05-27 2005-12-08 Fuji Xerox Co Ltd Static eliminator device and image forming device
JP2016099426A (en) * 2014-11-19 2016-05-30 富士ゼロックス株式会社 Electricity eliminator and image forming apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4366024B2 (en) * 2001-03-16 2009-11-18 キヤノン株式会社 Image forming apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001100535A (en) * 1999-09-28 2001-04-13 Kyocera Mita Corp Charge neutralizing device for image forming device
JP2004213952A (en) * 2002-12-27 2004-07-29 Kyocera Mita Corp Mounting structure of discharging member
JP2005335902A (en) * 2004-05-27 2005-12-08 Fuji Xerox Co Ltd Static eliminator device and image forming device
JP2016099426A (en) * 2014-11-19 2016-05-30 富士ゼロックス株式会社 Electricity eliminator and image forming apparatus

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