WO2005077795A1 - インクジェット記録装置 - Google Patents
インクジェット記録装置 Download PDFInfo
- Publication number
- WO2005077795A1 WO2005077795A1 PCT/JP2005/000778 JP2005000778W WO2005077795A1 WO 2005077795 A1 WO2005077795 A1 WO 2005077795A1 JP 2005000778 W JP2005000778 W JP 2005000778W WO 2005077795 A1 WO2005077795 A1 WO 2005077795A1
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- WIPO (PCT)
- Prior art keywords
- recording
- transport
- recording medium
- head
- belt
- Prior art date
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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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0065—Means for printing without leaving a margin on at least one edge of the copy material, e.g. edge-to-edge printing
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- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0025—Handling copy materials differing in width
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- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/007—Conveyor belts or like feeding devices
Definitions
- the present invention relates to an ink jet recording apparatus that completes recording on a recording medium by moving a recording medium without moving a recording head.
- the recording medium is conveyed continuously or intermittently with the recording surface facing the surface of the line head where the nozzles are formed.
- the line head selectively ejects ink droplets toward the recording surface of the conveyed recording medium based on the medium force of a large number of arranged nozzles based on information to be recorded. That is, the line head type ink jet recording apparatus completes recording on the recording medium only by moving the recording medium in one direction without moving the recording head.
- the solvent of the ink evaporates from the nozzle from which the ink droplet is ejected, and the viscosity of the ink in the nozzle rises.
- the nozzles may be clogged, or foreign matter may enter the nozzles, causing clogging of the nozzles, which may lower the performance of ejecting ink droplets from the nozzles. Therefore, the ink jet recording apparatus is designed to prevent clogging by ejecting ink droplets regardless of recording before the ejection performance is reduced due to an increase in ink viscosity in the nozzles or clogging. It is configured to perform ejection and maintain good recording quality.
- the solvent of the ink evaporates from the nozzle from which the ink droplet is discharged, and the ink in the nozzle is solidified.
- foreign matter may enter the nozzle, causing the nozzle to be clogged, and the nozzle force may be reduced in the ability to eject ink droplets. Therefore, the inkjet recording device is equipped with a protective cap that covers and protects the nozzle surface, prevents evaporation of the solvent, entry of foreign matter into the nozzle, etc., prevents nozzle clogging, and maintains good recording quality. It is configured to
- the solvent of the ink evaporates from the nozzle from which the ink droplet is discharged, and the ink in the nozzle solidifies, or foreign matter enters the nozzle. In some cases, nozzle clogging may occur and the performance of ejecting ink droplets from the nozzles may be reduced. Therefore, the inkjet recording apparatus is provided with an ejection performance recovery device for recovering the lowered ejection performance, and is configured to maintain good recording quality.
- the transport speed of the recording medium fluctuates due to expansion and contraction of the transport belt, and the transport belt vibrates between the transport rollers.
- the distance between the recording head and the recording medium becomes unstable, and the landing position of the ink droplet on the recording medium is shifted by a predetermined positional force.
- the displacement of the landing position of the ink droplet due to these phenomena occurs more remarkably as the transport section of the transport belt becomes longer. That is, there is an unsolved problem that it is difficult to lengthen the conveyance section by the conveyance belt while maintaining good recording quality.
- the present invention has been made in order to solve the above-described problems, and it is possible to lengthen a conveyance section by a conveyance belt without deteriorating recording quality, further improve recording quality, and increase recording speed. It is a first object to provide an ink jet recording apparatus capable of performing such operations.
- a large number of nozzles for ejecting ink droplets are arranged and formed in the width direction of the paper over the A4 short side dimension.
- the transport belt has a width dimension longer than the length of the nozzle row formed by the multiple nozzles arranged and formed, and is arranged to face the nozzle row so as to cover the nozzle row.
- the present invention has been made to solve the above problems, and provides an ink jet recording apparatus capable of performing marginless recording on a recording medium having various dimensions and shapes without contaminating a transport belt with ink. This is the second purpose.
- the recording medium A hole must be formed in the conveyor belt that conveys the hole, and when a predetermined tensile load is applied, the portion near the hole has a higher tensile stress and lower stress than the other portions.
- the distortion increases. That is, due to the effect of the formed holes, the tensile stress and strain are generated unevenly over the entire circumference of the conveyor belt.
- the present invention has been made to solve the above-described problems, and it is an ink jet recording method that suppresses fluctuations in the conveyance speed of a recording medium and enables clogging preventive ejection without lowering the recording quality and recording speed.
- a third object is to provide a device.
- the prior art described in Japanese Patent Application Laid-Open No. 2002-120386 has a configuration in which the recording head is moved upward, and the cap is further moved under the lateral force recording head. It is difficult to reduce the time until the protective cap is set on the recording head and the time until the protective cap is removed from the recording head and retracted. In addition, a mechanism to move each of the recording head and the protective cap is required, and unresolved problems such as difficulty in maintaining high reliability of the mechanical section and reducing the number of components are difficult. There is a problem.
- the present invention has been made to solve the above problems, and it is possible to shorten the time required for attaching and detaching a protective cap to and from a recording head with a simple configuration, and to ensure high reliability.
- a fourth object is to provide an ink jet recording apparatus capable of performing the above.
- a fifth object of the present invention is to solve the above problems, and it is a fifth object of the present invention to provide an ink jet recording apparatus which can shorten the time required for recovering the ejection performance and can be easily miniaturized. .
- FIG. 52 which is a diagram for explaining the problem in the conventional technique
- the ink IK discharged from the recording head HDA soaks into the recording surface PP
- the ink IK on the recording surface PP In the area where the recording surface PP soaks, the balance between the recording surface PP and the conveying surface PH opposite to the recording surface PP is lost, and warpage occurs (FIG. 52 (b)).
- the present invention has been made to solve the above problems, and an ink jet recording apparatus capable of suppressing the floating of a recording medium and appropriately maintaining a space between the recording medium and a recording head.
- the sixth purpose is to provide
- the first invention is a recording medium conveying means for mounting a recording medium on a conveying belt and conveying the recording medium, and a recording medium conveying means conveyed by the recording medium conveying means on a surface opposite to a conveying surface of the recording medium.
- An ink jet recording apparatus comprising: a recording head disposed opposite to a recording surface and having a plurality of nozzles for ejecting ink droplets arranged in a direction intersecting with a transport direction of the recording medium.
- the transporting means includes a first transporting section and a second transporting section connected in the transporting direction of the recording medium and provided with a plurality of transporting belts at predetermined intervals, and the first transporting section. And the transport belt of the second transport section is disposed such that the other transport belt is located between the one transport belt.
- the recording medium conveyance section in the recording medium conveyance means includes the first conveyance unit and the second conveyance unit. Therefore, the circumference of each of the transport belts of the first and second transport sections can be configured to be shorter than when the same transport section is configured by one transport section.
- the elongation of the transport belts of the first and second transport sections having the shorter circumference is compared.
- the power will be cheaper. Therefore, it is possible to reduce the elongation of the transport belt caused by the rotation of the drive shaft, to change the transport speed of the recording medium due to the expansion and contraction of the transport belt, and to determine the landing position of the ink droplet on the recording medium due to the vibration of the transport belt. The displacement can be reduced.
- the second invention is a recording medium conveying means for placing a recording medium on a conveying belt and conveying the recording medium, and a recording medium conveying means conveyed by the recording medium conveying means on a side opposite to a conveying surface of the recording medium.
- An ink jet recording apparatus comprising: a recording head disposed to face a recording surface that is a surface, and a plurality of nozzles that eject ink droplets are arranged in a direction that intersects a conveying direction of the recording medium.
- the recording medium transport means includes a first transport unit and a second transport unit connected in a transport direction of the recording medium and provided with a plurality of transport belts at a predetermined interval from each other, and
- the transport belts of the first transport unit and the second transport unit are disposed so that the other transport belt is located between the one transport belt, and the recording head is disposed in the first transport unit.
- the first head disposed opposite to the position between the conveyor belts , It is composed of a front stories second head disposed at a position opposed to between the conveyor belt of the second conveyor part, characterized in that Ru.
- the ejected ink droplets are conveyed even when the recording head performs the clogging prevention ejection of ejecting the ink droplets regardless of recording. It can be prevented from adhering on the feeding belt.
- the clogging prevention ejection can be completed in a short time without having to change the position of the printing head between the case where the printing head performs printing and the case where clogging prevention ejection is performed.
- the first transport section and the second transport section each include a drive shaft and a driven shaft disposed in parallel with the drive shaft.
- the transfer belt is stretched.
- the first transport unit and the second transport unit are disposed in parallel with a common drive shaft provided therebetween.
- the conveyor belt is stretched between the first driven shaft and the second driven shaft.
- the transport belt of the first transport unit and the transport belt of the second transport unit are rotated at the same speed by the common drive shaft. It is transported at the same speed on the transport unit of 2.
- the peripheral length of each of the first and second conveyor belts is shorter than when the same conveyor distance to the first driven shaft force and the second driven shaft is constituted by one conveyor belt.
- the elongation of the transport belts of the first and second transport sections having the short circumference is reduced. Smaller. Therefore, the elongation of the conveyor belt caused by the rotation of the drive shaft can be reduced.
- the first transport section and the second transport section each include the same number of the transport belts. It is characterized by
- the number of transport belts in the first transport unit and the number of transport belts in the second transport unit can be made equal.
- one of the shifts of the first transport unit and the second transport unit is one with respect to the number of the other transport belts.
- the number of transport belts is set to be equal to the number of transport belts, and the transport belts of the first transport section and the second transport section each have an odd number of the transport belts of the first transport section and the second transport section.
- the belts are arranged alternately around the transport belt at the center of the section.
- the number of one of the first and second conveyors can be an odd number, and the other one can be an even number.
- the distance between the transport belts of the first and second transport units is set to be longer than the width of the recording area in the first and second heads. It is characterized by being done!
- the ink droplets ejected from the first and second heads when the recording medium is not present on the transport belt can reliably pass between the transport belts and move to the ink transport belt. Can be suppressed.
- the total recording area of the first and second heads in which the recording areas are connected is transported by the recording medium transport means.
- the length is set to cover the width in the direction perpendicular to the direction.
- the total recording area of the recording head which does not face the conveyance belt, can cover the width of the recording medium. Therefore, even if the recording head ejects ink droplets from the entire recording area and performs recording over the entire recording surface without leaving an edge that is an unrecorded portion on the recording medium, borderless recording is performed. Ink droplets ejected outside the recording surface can be prevented from adhering to the conveyor belt.
- the recording medium in which the recording areas of the first and second heads are connected is conveyed by the recording medium conveying means.
- the total recording area is set to be narrower than the width in the direction orthogonal to the medium conveying direction, and the total recording area of the first and second conveying units is extended to the outside of the outermost conveyer belt of any deviation.
- a third head having a recording area formed from a side edge perpendicular to the transport direction is provided.
- the third head can extend the total recording area of the first and second heads. Therefore, the recording head ejects ink droplets from the entire extended recording area, and performs recording over the entire recording surface without leaving an edge that is an unrecorded portion on the recording medium. It can be carried out.
- the first transport unit and the second transport unit are provided with an equal number of the transport belts
- the third head is provided with the first transport unit. A position outside the outermost transport belt of the transport unit and facing the outermost transport belt of the second transport unit, and a position outside the outermost transport belt of the second transport unit and the It is provided at a position opposing the outermost conveyor belt of the first conveyor section.
- the number of the transport belts is set to be smaller by one of the first transport section and the second transport section than the other.
- the third head is provided outside each of the transport belts on both sides, which are the outermost sides of the transport section, where the number of the transport belts is one less! / ⁇
- the recording for restricting the floating of the recording medium from the transport belt between at least one of the first head and the second head.
- the apparatus is characterized in that a medium floating restricting means is provided.
- a thirteenth invention is characterized in that, in the twelfth invention, the recording medium floating restricting means is a rotatable roller.
- the lifting of the recording medium is regulated by the outer peripheral surface of the rotatable roller.
- the roller since the roller is configured to be rotatable, it does not hinder the conveyance of the recording medium without resisting the conveyance of the recording medium.
- the roller is provided with a plurality of radially extending protrusions on an outer peripheral surface.
- the protrusion having a small area can be brought into contact with the recording surface of the recording medium instead of the entire peripheral surface of the roller, so that damage to the recording surface after recording can be reduced.
- the roller is configured such that, when the rollers are moved in parallel in a direction perpendicular to the transport direction, the opposing side surfaces of the heads between the heads are moved in parallel.
- it is characterized in that it is arranged in a locus drawn by the side surface in plan view.
- the contact point between the roller and the recording medium is set so as to be located on a line connecting the nozzles of the heads between the heads in plan view. It is characterized by being.
- the roller As described above, it is possible for the roller to regulate the floating of the recording medium below the nozzle of the recording head, and it is possible to appropriately maintain the interval between the nozzle of the recording head and the recording surface of the recording medium. .
- the distance between the roller and the transport belt is such that the roller transports the recording medium when the recording medium is present between the roller and the transport belt. It is characterized in that it is set to the distance pressed against the conveyor belt.
- the distance between the roller and the transport belt is such that the recording medium is located between the roller and the transport belt and the recording medium is located above the transport belt.
- the distance is set to a distance at which the roller comes into contact with a recording surface of the recording medium.
- the outer peripheral surface of the roller contacts the recording surface of the recording medium only when the recording medium floats from the transport belt by a predetermined amount, and contacts when the floating of the recording medium is less than the predetermined amount. do not do.
- the first and second heads are formed at a position between the transport belts opposite to the first and second heads across the transport path of the recording medium.
- a head protection means for covering and protecting the nozzle.
- the head protection means avoids the transport belt and transports the recording medium. It is arranged to face the recording head across the road.
- the head protection means can be accommodated below the conveying surface of the recording medium, so that the size of the ink jet recording apparatus can be reduced and the recording medium can be conveyed when recording on the recording medium is being performed. Further, since the head protection means is opposed to the first and second heads without interruption, the recording head can be quickly protected.
- a gap is provided between the transport belt of the first transport section and the transport belt of the second transport section, and The width of the means is set to a width that covers all of the nozzles of the first and second heads.
- the head protection means can cover the nozzles of the first and second heads without extending.
- the head protection means comprises: a retreat position where a leading end retreats below a recording medium transport path; And moving from a head protection position in contact with the recording head after rising from the position.
- the head protection unit performs the recording that does not hinder the conveyance of the recording medium by retreating to the retreat position when recording on the recording medium is being performed! As a result, the recording head can be protected.
- the ink is sucked from the nozzle to a position between the transport belts opposed to the first and second heads across the transport path of the recording medium.
- Discharge performance recovery means for recovering ink discharge performance is provided.
- the ejection performance recovery means is arranged to face the recording head with the conveyance path of the recording medium avoiding the conveyance belt.
- the ejection performance recovery means can be accommodated below the conveying surface of the recording medium, so that the size of the ink jet recording apparatus can be reduced, and the recording medium can be used when recording on the recording medium is being performed. Further, since the ejection performance recovery means which does not hinder the conveyance of the ink jet head faces the first and second heads, the ejection performance recovery processing can be performed quickly.
- the transport belt of the first transport unit is provided. A gap is provided between the discharge belt and the transport belt of the second transport unit, and the width of the ejection performance recovery unit is set to a width that covers all of the nozzles of the first and second heads. It is characterized by.
- the ejection performance recovery means can cover the nozzles of the first and second heads without extending.
- the ejection performance recovery means includes a head protection function for covering and protecting the nozzles formed in the first and second heads. It is characterized by that.
- the ejection performance recovery means since the ejection performance recovery means has the head protection function, it is possible to reduce the size of the ink jet recording apparatus which does not require separate provision of the ejection performance recovery means and the head protection means.
- a twenty-fifth aspect of the present invention is a recording medium conveying means for mounting and conveying a recording medium on a conveying belt, and a surface opposite to a conveying surface of the recording medium conveyed by the recording medium conveying means.
- An ink jet recording apparatus comprising: a recording head having a recording area formed by arranging a plurality of nozzles for ejecting ink droplets facing a recording surface in a direction intersecting a transport direction of the recording medium.
- the recording medium conveying means may include at least one of a plurality of conveying belts stretched between a driving shaft and a driven shaft disposed in parallel with each other with a predetermined interval between the conveying belts.
- the recording head has a configuration in which the plurality of nozzles are arranged at least over the entire area of the recording surface of the recording medium in a direction intersecting the transport direction.
- Transport of the recording medium Discharging performance recovery means for recovering ink discharging performance by sucking ink from a facing nozzle facing the space between the transport belts at a position between the transport belts of the transport unit facing each other across the path; Relative movement means for moving the relative position between the discharge performance recovery means and the discharge performance recovery means such that a non-facing nozzle not facing the discharge performance recovery means faces the discharge performance recovery means. .
- the ejection performance recovery means is provided to face the recording head with the conveyance path of the recording medium avoiding the conveyance belt. Further, the recording head has an opposed nozzle facing the transport belt and a non-facing nozzle not facing the ejection performance recovery means. When the discharge performance of the opposing nozzle is recovered, the relative position of the recording head with respect to the discharge performance recovery means is moved by the relative movement means until the non-facing nozzle faces the discharge performance recovery means.
- the ejection performance recovery means can be accommodated below the conveying surface of the recording medium, and the required number of the ejection performance recovery means can be minimized, so that the size of the ink jet recording apparatus can be reduced.
- the relative moving means is a head moving means for moving the recording head.
- a non-facing nozzle that does not face the ejection performance recovery unit can face the ejection performance recovery unit.
- the relative movement means is a discharge performance recovery moving means for moving the discharge performance recovery means.
- the distance between the conveyor belts is set to be longer than the width of the conveyor belt, and the width of the ejection performance recovery means is:
- the non-facing nozzle faces the ejection performance recovery means, the non-facing nozzle is configured to cover the nozzle at the boundary between the non-facing nozzle and the non-facing nozzle and the non-facing nozzle.
- the ejection performance recovery means can absorb the ink by overlapping the nozzle force at the boundary between the opposed nozzle and the non-opposed nozzle.
- the ejection performance recovery means comprises: a withdrawal position in which a leading end is retreated below the conveyance path of the recording medium; It is characterized in that it is configured to be movable from the retracted position to an ejection performance recovery position in contact with the recording head.
- the ejection performance recovery means retreats to the evacuation position when recording on the recording medium is being performed, and when the recording is not being performed so as not to hinder the conveyance of the recording medium. By slightly rising, it becomes possible to recover the ejection performance of the recording head.
- FIG. 1 is an external view showing a main configuration of an ink jet recording apparatus according to a first embodiment.
- FIG. 2 is a plan view of a sheet transport unit according to the first embodiment.
- FIG. 3 is a plan view showing a main configuration of the ink jet recording apparatus according to the first embodiment.
- FIG. 4 is a diagram showing an appearance of a recording head according to the first embodiment.
- FIG. 5 is a block diagram showing a connection of control of main parts of the ink jet recording apparatus according to the first embodiment.
- FIG. 6 is a diagram showing a flow of a recording process of the ink jet recording apparatus according to the first embodiment.
- FIG. 7 is a plan view showing another sheet transport unit in the first embodiment.
- FIG. 8 is a plan view showing another inkjet recording apparatus according to the first embodiment.
- FIG. 9 is a plan view showing still another ink jet recording apparatus according to the first embodiment.
- FIG. 10 is a plan view showing still another sheet transport unit in the first embodiment.
- FIG. 11 is an external view showing a main configuration of an ink jet recording apparatus according to a second embodiment.
- FIG. 12 is a plan view of a sheet transport unit according to the second embodiment.
- FIG. 13 is a plan view showing a main configuration of an ink jet recording apparatus according to a second embodiment.
- FIG. 14 is a diagram illustrating an appearance of a recording head according to a second embodiment.
- FIG. 15 is a diagram schematically showing a C C cross section in FIG. 13.
- FIG. 16 is a block diagram showing a connection of control of main parts of an ink jet recording apparatus according to a second embodiment.
- FIG. 17 is a diagram showing a flow of a first marginless recording process in the second embodiment.
- FIG. 18 is a diagram showing a flow of a second marginless recording process in the second embodiment.
- FIG. 19 is a diagram showing a flow of a sheet clogging prevention discharge process according to the second embodiment.
- FIG. 20 is a plan view showing another sheet transport unit in the second embodiment.
- FIG. 21 is a plan view showing another inkjet recording apparatus according to the second embodiment.
- FIG. 22 is a plan view showing still another ink jet recording apparatus according to the second embodiment.
- [23] A plan view showing another inkjet recording apparatus according to the second embodiment.
- FIG. 24 is an external view illustrating a main configuration of an inkjet recording apparatus according to a third embodiment.
- [25] A plan view showing a main configuration of an ink jet recording apparatus according to a third embodiment.
- FIG. 26 is a diagram schematically showing a DD cross section in FIG. 25.
- FIG. 27 is a diagram schematically showing a cross section taken along line EE in FIG. 26.
- FIG. 28 is a front view of an ink jet recording apparatus according to a third embodiment.
- FIG. 29 is a diagram showing a state where the first and second ejection performance recovery caps in the third embodiment are in contact with the nozzle surface.
- FIG. 30 is a block diagram showing a connection of control of main parts of an ink jet recording apparatus according to a third embodiment.
- FIG. 31 is a diagram showing a flow of a sheet-to-sheet discharge performance recovery process in the third embodiment.
- FIG. 32 is a view for explaining the configuration of first and second head protection caps.
- Fig. 33 is a diagram showing a flow of a sheet head protection process in the third embodiment.
- FIG. 35 is a plan view of a paper transport unit in the fourth embodiment.
- FIG. 36 is a block diagram showing a connection of control of main parts of an ink jet recording apparatus according to a fourth embodiment.
- FIG. 37 is a diagram illustrating an appearance of a recording head according to a fourth embodiment.
- FIG. 38 is a diagram illustrating the configuration of a head moving mechanism.
- FIG. 39 is a view schematically showing a section taken along line FF in FIG. 34.
- FIG. 40 is a view for explaining the recovery operation of the discharge performance of the belt-facing nozzle in the fourth embodiment.
- Fig. 41 is a diagram showing a flow of a sheet-to-sheet discharge performance recovery process in the fourth embodiment.
- FIG. 42 illustrates the structure of the cap moving mechanism.
- FIG. 44 is a front view showing the main configuration of the inkjet recording apparatus according to the fifth embodiment.
- FIG. 45 is a plan view showing a sheet transport unit of the inkjet recording apparatus according to the fifth embodiment.
- FIG. 46 is a view schematically showing a GG section in FIG. 43.
- FIG. 47 is a view showing a JJ section in FIG. 43;
- FIG. 48 is a block diagram showing a connection of control of main parts of an inkjet recording apparatus according to a fifth embodiment.
- FIG. 49 is a bottom view of a first recording head group.
- FIG. 50 is a plan view showing another configuration of the inkjet recording apparatus according to the fifth embodiment.
- FIG. 51 is a front view showing another configuration of the inkjet recording apparatus according to the fifth embodiment.
- FIG. 52 is a view for explaining a problem in the related art.
- the ink jet recording apparatus 1 discharges a gate roller GR, a static electricity application unit EC, a paper conveyance unit CV, and ink droplets of yellow, magenta, cyan, and black.
- the recording head includes yellow, magenta, cyan, and black recording heads HDY, HDM, HDC, and HDK, and a paper discharge unit EJ.
- the paper transport unit CV includes a drive shaft DS to which power is transmitted from the transport unit drive motor MO, and a drive shaft DS parallel to the drive shaft DS and opposite to each other with the drive shaft DS interposed therebetween.
- the first and second driven shafts FS1 and FS2 which are located, the first transport belt VI which is passed over the drive shaft DS and the first driven shaft FS1, and which is passed over the drive shaft DS and the second driven shaft FS2 It includes a second conveyor belt V2 and a bearing BR that holds the drive shaft DS and the first and second driven shafts FS1 and FS2 in a housing, which are not shown rotatably.
- first and second driven shafts FS1 and FS2 are tensioned so that the first and second transport belts VI and V2 passed between the first and second driven shafts FS1 and FS2 do not loosen. In order to apply the same force, the same force is applied in opposite directions across the drive shaft DS.
- the first and second transport belts VI, V2 are each composed of four transport belts VIa-VId, V2a-V2d.
- the transport belts Via-Vld and V2a-V2d are alternately arranged on the drive shaft DS in the Y direction, which is a direction orthogonal to the X direction, which is the transport direction of the recording paper P.
- a gap is provided between the transport belt Via-Vld and the transport belt V2a-V2d by the flange portion FL provided on the drive shaft DS and the first and second driven shafts FS1 and FS2. ing. That is, the transport belts Via-Vld and V2a-V2d are arranged such that the axial movement thereof on the drive shaft DS and the first and second driven shafts FS1 and FS2 is restricted and does not contact each other. . Further, the width W1 of the transport belt Via-Vld and the width W2 of the transport belt V2a-V2d are set to the same width. Then, the transport belt widths Wl, W2 and the belt interval H are set so that H> W1, W2. The height of the flange portion FL is smaller than the thickness of the transport belts Via-Vld and V2a-V2d so as not to hinder the transport of the recording paper P.
- the drive shaft DS, the first driven shaft FS1, and the first transport belt VI are connected to the first transport unit CVI, and the drive shaft DS, the second driven shaft FS2, and the second transport belt V2 are connected to the drive shaft DS. It constitutes the second transport section CV2.
- the transport unit drive motor MO when the transport unit drive motor MO is started, the power of the rotating shaft force of the transport unit drive motor MO is transmitted to the drive shaft DS, and the drive shaft DS is rotated.
- the drive shaft DS is rotated, power is transmitted to the first and second conveyor belts VI and V2, and the first conveyor belt VI and the second conveyor belt V2 are rotated at the same speed.
- the recording paper P is placed on the outer peripheral surfaces of the first and second transport belts VI and V2, and is transported from the first driven shaft FS1 to the second driven shaft FS2.
- the yellow, magenta, cyan, and black recording heads HDY, HDM, HDC, and HDK are line heads having a recording area equal to the paper width. As shown in FIG. The nozzles from which ink droplets are ejected are disposed facing the first and second transport belts VI and V2. As shown in FIG. 3, the cyan and black recording heads HDC and HDK are located between the first driven axis FS1 and the driving axis DS, and the yellow and magenta recording heads HDY and HDM are located between the driving axis DS and the driving axis DS. Located between the second driven shaft FS2.
- FIG. 4 is a view showing the appearance of the yellow recording head HDY
- FIG. 4 (a) is a front view in the direction of A in FIG. 3
- FIG. 4 (b) is a bottom view.
- the size of the nozzle is exaggerated for easy understanding of the nozzle.
- the yellow recording head HDY has a nozzle surface NZP in which the yellow nozzle NZY from which the yellow color ink is ejected extends on the same line in the Y direction over a length equal to the paper width. It is arrayed in! This arrayed yellow nozzle NZY forms one nozzle row NZYL!
- magenta recording head HDM cyan recording head HDC, and black recording head HDK have the same configuration as the yellow recording head HDY, the description is omitted. It should be noted that as each of these color recording heads HDY, HDM, HDC, and HDK, a recording head that applies pressure to ink by a piezoelectric element, a heating element, or the like to eject ink droplets can be used.
- the inkjet recording apparatus 1 includes a paper feed unit KS that feeds the recording paper P to the gate roller GR, as shown in FIG. 5 which is a block diagram, and first and second transports. It further includes first and second sheet detecting sections PK1 and PK2 for detecting the recording sheet P on the sections CV1 and CV2.
- the first and second paper detection units # 1 and # 2 detect the recording paper P in order to measure the recording timing by the respective color recording heads HDY, HDM, HDC and HDK, and each of the first driven shaft FS 1 Between the drive shaft DS and the magenta print head HDM, and is composed of a sensor such as a photo interrupter.
- the inkjet recording apparatus 1 includes a paper feed control unit KSD for controlling the paper feed unit KS, a gate roller control unit GRD for controlling the gate roller GR, and an electrostatic charge application control unit for controlling the static electricity application unit EC.
- ECD paper detection control unit PKD that controls the first and second paper detection units PK1, ⁇ 2, motor control unit MD that controls the transport unit drive motor ⁇ , and recording heads HDY, HDM, HDC, HDK for each color
- the recording head controller HDD controls the recording, the recording information storage unit BF stores recording information from external devices, and the control units GRD, ECD, PKD, MD, and HDD based on the recording information.
- a CPU that issues operation commands.
- the inkjet recording apparatus 1 shown in FIG. 1 starts a recording operation when receiving recording information and a recording command from an external device.
- the recording paper P is supplied to the gate roller GR one by one from a paper cassette (not shown) holding a plurality of recording papers P by the paper supply unit KS.
- the recording paper P fed to the gate roller GR is corrected by the gate roller GR for inclination in the X direction and misalignment in the Y direction, and is sent out to the paper transport unit CV.
- the recording paper P is charged by the static electricity application unit EC while being sent from the gate roller GR to the paper conveyance unit CV.
- the recording paper P which is charged and has an attraction to the transport belt, has the drive shaft DS rotated by the transport unit drive motor MO, and the first transport belt VI is rotated counterclockwise as viewed in FIG.
- the first conveying belt CV1 is attracted to the outer peripheral surface of the first conveying belt VI on the first conveying section CV1, is conveyed by the power of the conveying section driving motor MO, and is guided under the black recording head HDK.
- the first paper detection unit PK1 detects the recording paper P, and outputs a first paper detection signal indicating that the recording paper P has been detected to the CPU. Let go.
- the CPU measures the timing to start black and cyan recording based on the first paper detection signal from the first paper detection unit PK1, and sequentially records black and cyan to the recording head controller HDD. Send a command.
- the recording head control unit HDD controls the black recording head HDK based on the black recording command, and is continuously moved below the nozzle surface NZP by the first transport unit CV1. Based on the recording information, black ink is selectively ejected from the black nozzle NZK on the recording surface PP of the incoming recording paper P to perform black recording.
- the recording head control unit HDD controls the cyan recording head HDC based on the cyan recording command from the CPU, and performs cyan recording.
- the recording paper P on which black and cyan recordings have been performed is sequentially transferred from the first transport belt VI to the second transport belt V2 on the drive shaft DS, and is transported by the second transport unit CV2.
- the magenta recording head is guided under the HDM.
- the second paper detection unit PK 2 detects the recording paper P and sends a second paper detection signal to the CPU indicating that the recording paper P has been detected. send.
- the CPU sequentially sends the magenta and yellow recording instructions to the recording head controller HDD based on the second paper detection signal from the second paper detector PK2.
- the recording head control unit HDD sequentially controls the magenta recording head HDM and the yellow recording head HDY in parallel to execute the recording of the magenta and yellow colors.
- the recording operation is completed, and if unrecorded recording information remains, new recording paper P is fed to the gate roller GR. The recording operation is continued until the recording of all the recording information is completed.
- a recording process for recording on the recording paper P in the inkjet recording device 1 of the first embodiment will be described.
- This recording process is divided into black recording with the black recording head HDK, cyan recording with the cyan recording head HDC, magenta recording with the magenta recording head HDM, and yellow recording with the yellow recording head HDY. , By individually controlling each recording head. Therefore, the flow will be described for each color recording process.
- the inkjet recording apparatus 1 starts the black recording process shown in FIG. 6 when the recording paper P is fed to the gate roller GR in response to recording information and a recording command from an external device. I do.
- step S1 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S2.
- step S2 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 detects the force of detecting the leading end of the recording sheet P. If it is determined that is detected, the process proceeds to step S3. If it is determined that no is detected, the process proceeds to step S1 to read the sheet detection signal. Next, in step S3, a timer for detecting the leading end of the recording paper P and measuring the force time T1 is started, and the process proceeds to step S4.
- step S4 it is determined whether or not the force measured by the timer T1 matches the predetermined time Tsl. If it is determined that the forces match, the process proceeds to step S5, where it is determined that they do not match. And step S4 is repeated until they match.
- step S5 recording is performed by the black recording head HDK, and the process proceeds to step S6.
- step S6 the timer is reset and the process ends.
- the timer 1 in steps S3 and S6 is set as timer 2
- the black recording head HDK in step S5 is set as cyan recording head HDC
- the measurement time T2 by timer 2 is determined. Except for determining whether or not the force matches the time Ts2, the process is the same as the black recording process, and the drawings and the description of each process are omitted.
- the recording process of magenta and yellow is performed by setting the first sheet detecting unit PK1 in step S1 to the second sheet detecting unit PK2, and using the timer 1, the measurement time Tl, and the predetermined time Tsl. Since the recording process is the same as that for the black and cyan colors except that the timers 3 and 4, the measurement times T3 and T4, and the predetermined times Ts3 and Ts4, respectively, detailed description is omitted.
- the recording paper P corresponds to a recording medium.
- the recording medium is moved between the first transport belt VI and the second transport belt VI. It is transported at the same speed on the transport belt V2.
- first and second conveyor belts VI and V2 have a larger circumference than the case where the same conveyor distance from the first driven shaft FS1 to the second driven shaft FS2 is constituted by one conveyor belt. It can be short. That is, when the same tension is applied to the first and second transport belts VI and V2 and the first and second transport belts VI and V2 are compared with the first and second transport belts VI and V2, the first In addition, the elongation of the second conveyor belts VI and V2 becomes smaller. Therefore, the elongation of the transport belt caused by the rotation of the drive shaft DS can be reduced.
- the distance between the shafts is shorter than that of the transport belt having a longer circumference.
- the first and second conveyor belts VI and V2 are smaller. That is, it is possible to reduce the tension applied to the transport belt to suppress the amount of deflection. Accordingly, the deflection of the drive shaft DS and the first and second driven shafts FS1, FS2 due to the force received from the first and second transport belts VI, V2 is reduced.
- the first and second driven shafts FS1 and FS2 are opposite to each other across the drive shaft DS. If tension is applied to the first and second conveyor belts VI and V2 by applying the same force to the first and second conveyor belts VI and V2, the tensions of the first and second conveyor belts VI and V2 cancel each other out of the force applied to the drive shaft DS, The deflection of the drive shaft DS can be reduced.
- the width W1 of the transport belt Via-Vld and the width W2 of the transport belts V2a-V2d are made equal, and the transport belt widths W1 and W2 And the belt spacing H is such that the relation H> W1, W2 is not limited to this, and one of the widths W1 and W2 may be made wider than the other. . That is, as shown in FIG. 7, by configuring the paper transport section CV so that W2> W1, the belt interval H2 in the second transport section CV2 can be narrower than H described above.
- the ink jet recording apparatus 1 provided with the paper transport section CV is a color recording head of each of the color recording heads HDY, HDM, HDC, and HDK, which is yellow, magenta, and cyan recording heads.
- HDY, HDM and HDC are arranged on the second transport section CV2.
- the black recording head HDK is provided on the first transport section CV1.
- characters are often recorded in the creation of a document or the like, and the color recording heads HDY and H are used for color recording that requires higher recording quality than black recording.
- the flatness of the recording paper P under DM and HDC can be improved, and the recording quality can be further improved.
- the recording medium P has been described as an example of a recording medium, but the present invention is not limited to this, and the present invention can be applied to recording media other than paper.
- the present invention can be applied to materials having various properties such as materials such as resin and metal, shapes such as circular and irregular shapes, and materials having high and low flexibility.
- first and second conveyor belts VI and V2 are each constituted by four conveyor belts VIa-VId and V2a-V2d. Is also good. In order to convey the recording surface PP of the recording paper P as flatly and stably as possible and to obtain good recording results.
- the force is such that the first and second transport belts VI and V2 are directly passed over the drive shaft DS and the first and second driven shafts FS1 and FS2.
- the present invention is not limited to this. That is, the first and second transport belts VI and V2 are used as timing belts, and the drive shaft DS and the first and second driven shafts FS1 and FS2 are provided with timing belt pulleys. Power may be transmitted to the first and second conveyor belts VI and V2.
- the first and second transport belts VI and V2 are constituted by four transport belts Via-Vld and V2a-V2d of the same number, respectively.
- the first transport belt VI is composed of three transport belts Via—Vic
- the second transport belt V2 is composed of four transport belts V2a—V2d. It is good.
- the first conveyor belt VI and the second conveyor belt V2 are alternately arranged on the drive shaft DS around the conveyor belt Vlb, which is the center of the odd number of conveyor belts V la — Vic.
- the heads HDY, HDM and HDC are arranged on the second conveyor CV2 equipped with four conveyor belts V2a-V2d, and the black recording head HDK is arranged on the first conveyor CV1. Is established.
- the first and second driven shafts FS1 and FS2 are given equal forces in opposite directions with the drive shaft DS interposed therebetween to apply tension to the first and second transport belts VI and V2. If given, the tensions of the first and second conveyor belts VI and V2 cancel out the forces applied to the drive shaft DS, and the resultant force of the tension of the first conveyor belt V1 and the tension of the second conveyor belt V2 The direction connecting the points of action of the resultant forces and the direction of the resultant force coincide with each other on the drive shaft DS, thereby suppressing the generation of couples and further suppressing the deflection of the drive shaft DS.
- the number of the transport belts is not limited to three of the first transport belt VI and four of the second transport belt V2. It should be set so that one of them is one more than the other!
- the inkjet recording apparatus 100 includes a paper transport unit CV and a second transport unit CV1, which is driven independently of the first transport unit CV1.
- the paper transport unit CV includes a second transport unit CV2 including a second drive shaft DS2 and a second transport unit drive motor M2, and a first transport unit CV1. It is configured independently.
- the drive shaft and the transport unit drive motor of the first transport unit CV1 are called a first drive shaft DS1 and a first transport unit drive motor Ml, respectively, and the second transport unit A distinction is made between the drive shaft and transport unit drive motor in CV2.
- first and second driven shafts FS1 and FS2 are connected to the first and second drive shafts D Sl and DS2.
- the first and second transport belts VI, V2 are each composed of four transport belts VIa-VId, V2a-V2d.
- the transport belts Via-Vld and V2a-V2d are alternately arranged in the Y direction, which is a direction orthogonal to the X direction, so that they do not overlap in the X direction, which is the transport direction of the recording paper P.
- the first and second transport units CV1 and CV2 have a transport surface opposite to the recording surface PP of the recording paper P shown in FIG. 11 on the first transport belt VI and the second transport belt. It is set to be the same plane as on V2!
- the paper transport unit CV having the above-described configuration causes the power of the rotating shaft force of the first transport unit drive motor Ml to be applied to the first drive shaft DS1.
- the first drive shaft DS1 is transmitted and rotated.
- the first drive shaft DS1 is rotated, power is transmitted to the first transport belt VI, and the recording paper P is placed on the outer peripheral surface of the first transport belt VI, and the first driven shaft FS1 To the first drive axis DS1.
- the recording paper P transported to the first drive axis DS1 is rotated by the power of the second transport unit drive motor M2 driven in synchronization with the first transport unit drive motor Ml. It is sent out onto the outer peripheral surface of the transport belt V2, and is transported from the second driven shaft FS2 to the second drive shaft DS2.
- the first and second recording head groups HD1 and HD2 are recording heads disposed on first and second transport units CV1 and CV2, respectively.
- the recording heads HDla-HDlc of the first recording head group HD1 are located at positions opposing the conveyor belts Via-Vld between the first driven shaft FS1 and the first drive shaft DS1. It is arranged.
- the recording head HD3a is arranged adjacent to the recording head HDlc with the conveyance belt Vld interposed therebetween.
- the recording heads HD2a to HD2c of the second recording head group HD2 are located at positions opposing the conveying belts V2a to V2d between the second driven shaft FS2 and the second driving shaft DS2. It is arranged in.
- the recording head HD 3b is arranged side by side with the recording head HD2a with the transport belt V2a interposed therebetween.
- FIG. 14 is a view showing the appearance of the recording head HDla
- FIG. 14 (a) is a front view in the direction of B in FIG. 13
- FIG. 14 (b) is a bottom view.
- the size of the nozzles is exaggerated and the number of the nozzles is reduced in order to easily show the nozzles.
- the recording heads HDla—HDlc ⁇ HD2a—HD2c, HD3a, and HD3b are yellow nozzles NZY that eject yellow ink, and magenta nozzles that eject magenta ink. It has a NZM, cyan nozzle NZC for ejecting cyan ink, and a black nozzle NZK for ejecting black ink.
- the nozzles NZY, NZM, NZC, and NZK of each color are arranged and formed in the X direction, which is the conveying direction of the recording paper P, and are arranged and formed in the Y direction, which is a direction orthogonal to the conveying direction.
- the nozzle row NZML, cyan nozzle row NZCL, and black nozzle row NZKL are configured.
- the recording heads HDla—HDlc and HD3a Recording head HD2a—Yellow nozzle NZY, magenta nozzle NZM, cyan nozzle NZC, black nozzle NZK with HD2c and HD3b extend over the width in the Y direction between the first recording head group HD1 and the second recording head group HD2.
- the nozzles are arranged at equal intervals to form one nozzle row for each color.
- first and second recording head groups HD1 and HD2 recording heads that apply pressure to ink by a piezoelectric element, a heating element, or the like to eject ink droplets can be adopted.
- the driving of each of the first and second recording head groups HD1 and HD2 is controlled by a recording head controller HDD as shown in FIG.
- the ink absorbing section PD has a transport path for the recording paper P under the transport belts Via-Vld and V2a-V2d.
- the recording heads HDla—HDlc, HD2a—HD2c, HD3a, and HD3b are located opposite the PC.
- the ink absorbing section PD is made of a material having a high ability to absorb liquids such as felt and sponge.
- the recording head HDla—HDlc, HD2a—HD2c, HD3a, and HD3b are used for borderless printing described later.
- P recording surface Absorbs ink ejected outside the area of PP.
- the first drive shaft D The illustration of the downstream side from S1 is omitted.
- the recording heads HD3a and HD3b have a width wider than the recording heads HDla-HDlc and HD2a-HD2c facing each other between the conveyor belts as indicated by 015 (b).
- the recording heads HDla—HDlc, HD2a—HD2c, HD3a, and HD3b are arranged across the recording paper P over a distance longer than the width of the recording paper P in the Y direction, as shown in FIG. ing. That is, the total recording area in the Y direction constituted by the recording heads HDla-HDlc and HD2a-HD2c is set to be smaller than the width of the recording paper P in the Y direction, and is extended by the recording heads D3a and HD3b.
- the total recording area extended by the recording heads HD3a and HD3b is set to be longer than the width of the recording paper P in the Y direction so as to cross the recording paper P.
- the belt interval H is set wider than the width of the recording heads HDla-HDlc and HD2a-HD2c facing between the conveyor belts. Therefore, even when ink droplets are ejected from the recording heads HD1a-HDlc and HD2a-HD2c facing each other between the transport belts when the recording paper P does not exist on the transport path PC, the ink droplets are ejected from the transport belt Via 1 Vld, V2a — These are configured so that they can reach the ink absorbing section PD without adhering to V2d.
- the inkjet recording apparatus 100 having the above configuration starts the recording operation upon receiving the recording information and the recording instruction from the external device, and performs the first transporting unit similarly to the above-described first embodiment.
- CV1 guides the recording paper P under the first recording head group HD1.
- the CPU measures the recording start timing based on the first sheet detection signal output from the first sheet detection unit PK1, and causes the recording head control unit HDD to control the first recording head group HD1. Then, ink droplets are ejected from the nozzles NZY, NZM, NZC, NZK of each color, and the first recording based on the recording information is performed.
- the recording paper P on which the first recording has been performed is guided under the second recording head group HD2 by the second transport unit CV2, and similarly to the first recording, the second recording paper P2 The second recording is performed by the second recording head group HD2 at a timing based on the second sheet detection signal from the detection unit PK1.
- the edge which is the unrecorded portion on the recording paper P is trimmed.
- a description will be given of a process of borderless recording in which recording is performed over the entire area of the recording surface PP without leaving any.
- This borderless recording process is performed by individually controlling the first and second recording head groups HD1 and HD2. Therefore, the flow will be described separately for the processing of the first recording head group HD1 and the processing of the second recording head group HD2.
- the CPU executes the first borderless recording process by the first printhead group HD 1 shown in FIG. Start.
- step S201 ink is formed by ejecting ink droplets from the nozzles NZY, NZM, NZC, and NZK based on the recording information of the external device and the borderless printing command.
- Optimize the recording size so that it is larger than the recording surface PP of the recording paper P of the specified size, and proceed to step S202.
- the reason why the size of the image is made larger than the size of the recording surface PP of the recording paper P is that even if the recording paper P is conveyed with a slight inclination in the X direction, the size of the image will be the inclination. This is to ensure that recording is performed over the entire area of the recording surface PP.
- step S202 the recording paper P of the specified size is placed in the Y direction of the image whose center in the Y direction width of the recording paper P is optimized in step S201.
- the sheet is fed to the gate roller GR so as to be located at substantially the center of the width, and the process proceeds to step S203.
- step S203 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S204.
- step S204 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 has detected the leading end of the recording sheet P, and whether or not the force is detected. If it is determined that the edge has been detected, the process proceeds to step S205. If it is determined that the edge has not been detected, the process proceeds to step S203 to read the sheet detection signal.
- step S205 a timer for detecting the leading end of the recording paper P and measuring the force time T1 is started, and the process proceeds to step S206.
- step S206 it is determined whether or not the force measured by the timer matches the predetermined time Tsl, and if it is determined that they match, the process proceeds to step S207, and if they match, V ⁇ is determined. , The step S206 is repeated until they match.
- step S207 based on the recording size optimized in step S201, the recording head control unit HDD controls the first recording head group HD1, and selectively selects the nozzles NZY, NZM, NZC, and NZK.
- the first recording is performed by discharging the ink droplets, and the process proceeds to step S208.
- step S208 the timer is reset and the process ends.
- steps S201 and S202 were omitted in the first marginless recording process by the first recording head group HD1.
- the configuration is the same, and the content of each process is the same as that of the first marginless recording process, and thus the description is omitted.
- borderless recording which is an unrecorded portion on the recording surface PP of the recording paper P, is completed.
- the recording paper P corresponds to the recording medium
- the first recording head group HD1 and the process of step S207 in FIG. 17 correspond to the first head group
- the second recording head group HD2 and The processing of step S225 in FIG. 18 corresponds to the second head group
- the recording heads HDla and HDlc correspond to the first head
- the recording heads HD2a—HD2c correspond to the second head
- the recording heads HD3a and HD3b Correspond to the third head
- the transport belts Vld and V2a correspond to the outermost transport belts.
- the first and second recording head groups HD1 and HD2 eject ink droplets over the recording paper P over a distance longer than the width of the recording paper P, thereby forming an edge that is an unrecorded portion.
- Borderless recording can be performed over the entire area of the recording surface PP without leaving any. Further, when performing the borderless printing, it is possible to reliably prevent ink droplets ejected from the printing surface PP from adhering to the transport belts Via-Vld and V2a-V2d.
- the paper transport section CV by configuring the paper transport section CV with the first and second transport sections CV1 and CV2 having a short length, the slack of the belt during transport is prevented, and the recording medium is moved along the flat surface. It can be transported accurately.
- the recording when recording is continuously performed on different recording papers P, the recording is performed between the different recording papers P from the first and second recording heads HD1 and HD2. Prevents clogging by ejecting ink droplets regardless of paper The processing will be described.
- This inter-paper clogging prevention ejection process is performed by individually controlling the first and second recording head groups HD1 and HD2, and the control flow is the same. Therefore, only the processing flow of the first recording head group HD1 will be described in detail.
- step S241 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S242.
- step S242 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 detects the rear end of the recording sheet P, and whether or not the force is detected. If it is determined that it has been detected, the process proceeds to step S243, and if it is determined that it has not been detected, the process proceeds to step S241 to read the sheet detection signal.
- step S243 a timer for detecting the trailing edge of the recording sheet P and measuring the time of the force is started, and the flow proceeds to step S244.
- step S244 it is determined whether or not the force measured by the timer matches the predetermined time Ts, and if it is determined that the force has been matched, the process proceeds to step S245, and if it is determined that the two do not match. , Repeat step S244 until they match.
- step S245 ink droplets are ejected from the first print head group HD1 irrespective of printing to prevent clogging, and the flow proceeds to step S246.
- step S246 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S247.
- step S247 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 has detected the leading edge of a new recording sheet P. If it is determined that it has been detected, the process proceeds to step S248, and if it is determined that it has not been detected, the process proceeds to step S245.
- step S248 the timer is reset and the process ends.
- step S245 corresponds to the first head.
- the belt interval H corresponds to the distance between the conveyor belts.
- the ejected ink droplets adhere to the transport belt even if the recording head performs the clogging prevention discharge, which ejects ink droplets regardless of recording. Can certainly be avoided.
- the clogging prevention ejection can be completed in a short time without having to change the position of the printing head between the case where the printing head performs printing and the case where clogging prevention ejection is performed.
- the recording paper P is described as an example of the recording medium.
- the present invention is not limited to this, and can be applied to recording media other than paper.
- the present invention can be applied to materials having various properties, such as a material such as resin or metal, a shape such as a circular or irregular shape, and a material having high or low flexibility.
- the first and second conveyor belts VI and V2 are each constituted by four conveyor belts Via—Vld and V2a—V2d. It may consist of one by one. From the viewpoint of transporting the recording surface PP of the recording paper P as flatly and stably as possible and obtaining good recording results, it is preferable that the recording paper P be composed of a plurality of recording papers.
- VI and V2 are directly passed to the first and second drive axes DS1 and DS2 and the first and second driven axes FS1 and FS2, the invention is not limited to this.
- first and second transport belts VI and V2 are used as timing belts, and the first and second drive shafts DS1 and DS2 and the first and second driven shafts FS1 and FS2 are provided with timing belt pulleys. Power may be transmitted to the first and second conveyor belts VI and V2 via a pulley for a timing belt.
- the ink absorbing section PD is located below the transport path PC and at a position where the transport of the recording paper P is not hindered, the ink absorbing section PD is arranged inside the loop of the transport belts Via-Vld and V2a-V2d. You may. In this case, the ink absorbing section PD can be brought closer to the nozzle surfaces NZP of the first and second recording head groups HD1 and HD2. Therefore, for example, the nozzle surface NZP Even if the flight path of the ink droplets is bent due to the attachment, the ink droplets can be reliably received before the ink droplets reach the inner peripheral surface of the transport belt Via-Vld, V2a-V2d. Can be
- the paper transport section CV is composed of the first and second transport sections CV1 and CV2, and each is independently controlled by the first and second transport section drive motors Ml and M2.
- one of the first and second drive shafts DS1 and DS2 is driven by a motor, and the rotational force is transmitted to the other by a chain and a sprocket, a timing belt and Power should be transmitted via a power transmission mechanism composed of pulleys for timing belts.
- the number of conveyor belts of the first conveyor belt VI and the second conveyor belt V2 is set to the same number.
- the present invention is not limited to this. May be set one less than the other. That is, as shown in FIG. 20, the second transport section CV2 is configured by four transport belts, and the first transport section CV1 is configured by three transport belts one less than the second transport section CV2. be able to.
- the first conveyor belt VI and the second conveyor belt V2 are arranged such that the center conveyor belt of the odd number of the first conveyor belts VI is the center, and the first conveyor belt VI and the second conveyor belt V2 do not overlap in the X direction. It is arranged alternately in the direction.
- the first recording head group HD1 is located between the first driven shaft FS1 and the drive shaft DS1 at a position opposed to the first conveyor belt V1 between the conveyor belts.
- the recording heads HDla and HDlb, which are provided, and the recording heads HDla and HDlb are arranged outside the transport belts with the outermost transport belts Via and Vic of the first transport belt VI interposed therebetween.
- the second recording head group HD2 includes recording heads HD2a to HD2c at positions opposed to the second conveyor belt V2 between the second driven shaft FS2 and the drive shaft DS2. It has a set configuration.
- the transport belts Via and Vic correspond to the outermost transport belts.
- the recording heads HDla and HDlb correspond to the first head
- the recording heads HD2a—HD2c correspond to the second head
- the recording heads HD3a and HD3b correspond to the third head.
- the first and second recording head groups HD1 and HD2 correspond to the first and second head groups are doing.
- the paper transport unit CV including the first transport unit CV1 and the second transport unit CV2 driven independently of the first transport unit CV1 has been described as an example.
- the present invention is not limited to this, and the sheet transport unit CV shown in FIG. 2 of the first embodiment may be used.
- the inkjet recording apparatus 110 including the paper transport unit CV shown in FIG. 2 of the first embodiment has the first and second transport belts VI and V2 that share a common transport belt. Driven by the partial drive motor MO and drive shaft DS.
- the configuration of the paper transport unit CV can be simplified as compared with the ink jet recording apparatus 100 that has the same effect as the ink jet recording apparatus 100 and can be used without force. Further, since the first and second transport belts VI and V2 are driven by the common transport drive motor M0 and drive shaft DS, the recording paper P is moved under the first and second recording head groups HD1 and HD2. Are transported at the same speed, and the difference in recording quality between the first and second recording head groups HD1 and HD2 can be suppressed.
- the force for setting the number of the conveyor belts of the first conveyor belt VI and the second conveyor belt V2 to the same number is not limited to this.
- One of them may be set one less than the other. That is, it may be configured to include the sheet transport unit CV shown in FIG. 10 of the first embodiment.
- the ink jet recording apparatus 111 having the paper transport unit CV shown in FIG. 10 has the same configuration as that of FIG. 21 except for the configuration of the paper transport unit CV. The same reference numerals are given and the description is omitted.
- the widths in the Y direction of the recording heads HD3a and HD3b in the inkjet recording apparatus 110 shown in FIG. 22 of the second embodiment are equivalent to the recording heads HDla-HDlc and HD2a-HD2c, respectively. 24, and the ink absorption unit PD is omitted, and as shown in FIG. 24, the ink jet recording apparatus 110 is provided with first and second ejection performance recovery caps CA1 and CA2. It has the same configuration as.
- the first and second recording head groups HD1 and HD2 are composed of recording heads HDla-HDld and HD2a-HD2d arranged on the first and second transport units CV1 and CV2, respectively. It is configured. Then, of the recording heads HDla-HDld, the recording head HDla-HD1c is located between the first driven shaft FS1 and the driving shaft DS at a position facing the conveyor belt VIa-V1d. It is arranged. The recording head HDld is arranged adjacent to the recording head HDlc with the transport belt Vld interposed therebetween.
- the recording heads HD2b-HD2d of the recording heads HD2a-HD2d are disposed at positions opposing between the transport belts of the transport belts V2a-V2d between the drive axis DS and the second driven axis FS2. .
- the recording head HD2a is arranged side by side with the recording head HD2b with the transport belt V2a interposed therebetween.
- FIG. 26 is a diagram schematically showing a D-D cross section in FIG. 25, and FIG. Shows the state where the first ejection performance recovery cap CA1 is in the retracted position, and FIG. 26 (b) shows that the first ejection performance recovery cap CA1 is raised and is in contact with the recording head HDla—HDld. Indicates the status.
- the second transport section CV2 is omitted for simplicity.
- the first ejection performance recovery cap CA1 is The HD1 recording head HDla-HDld has split caps CAla-CAld that face each other across the recording paper transport path PC.
- the second ejection performance recovery cap C A2 has the same configuration as the first ejection performance recovery cap CA1, and therefore a drawing is omitted.
- Force Recording heads HD2a—HD2d are separated from each other across the transport path PC.
- the division cap CAla- CAlc of the division cap CAla- CAld sandwiches the conveyance path PC at the position between the conveyance belts of the conveyance belt Via- Vld between the first driven shaft FS1 and the drive shaft DS.
- the recording head is located opposite the HDla-HDlc.
- the division cap CAld is arranged adjacent to the division cap CAlc with the conveyance belt Vld interposed therebetween, and is disposed at a position facing the recording head HDld with the conveyance path PC interposed therebetween.
- the division caps CA2b-CA2d of the division caps CA2a-CA2d sandwich the conveyance path PC between the conveyance belts of the conveyance belts V2a-V2d between the drive shaft DS and the second driven shaft FS2.
- the recording head HD2b is disposed opposite the HD2d.
- the division cap CA2a is arranged adjacent to the division cap CA2b with the conveyance belt V2a interposed therebetween, and is disposed at a position facing the recording head HD2a with the conveyance path PC interposed therebetween.
- the width of the divided caps CAla-CAld is set wider than the width of the recording head H Dla-HDld, and is raised by a cap elevating unit described later.
- the recording head HDla can cover all nozzles of HDld.
- the split caps CAla-CAld and CA2a-CA2d are supported by the cap support SJ and connected to the suction pump PU by a tube TB!
- the split caps CAla—CAld and CA2a—CA2d have the nozzles NZY and NZM of the print head HDla.
- NZC, NZK Formed by contacting the end with the nozzle surface NZP, the cap NPY covering at least the upper part of the nozzle NZY, NZM, NZC, NZK is made of an elastic body, and is fixed to the cap support SJ.
- a support frame SF for supporting the cap portion CP, and an ink absorber CT provided in the cap portion CP for absorbing ink.
- the tube TB one end of which is connected to the suction pump PU, has the other end connected to the cap CP via the support frame SF and the cap support SJ.
- the cap portion CP is lifted by a cap elevating portion described later, and the end of the cap portion CP contacts the nozzle surface NZP and covers the nozzles NZY, NZM, NZC, and NZK. Then, the pressure in the cap portion CP is reduced by the suction pump PU via the tube TB. Therefore, the solidified ink and invading foreign matter that cause clogging of the nozzles are sucked into the cap portion CP, and the clogging is eliminated.
- the cap elevating unit UD includes first and second elevating units which are rotated about the rotation axis RS by bringing the outer periphery into contact with the bottom surface of the cap supporting unit SJ.
- a cap guide section (not shown) for guiding the cap support section SJ up and down is provided.
- FIG. 28 shows a state in which the first and second ejection performance recovery caps CA 1 and CA 2 are in the retracted position with the nozzle surface forces of the first and second recording head groups HD 1 and HD 2 separated from each other. .
- the first and second elevating cams CM1, CM2 are independently driven by the first and second cam drive motors M3, M4. Further, as the first and second cam drive motors M3 and M4, a stepping motor or the like capable of open control can be employed.
- FIG. 30 is a block diagram.
- the ink jet recording apparatus 1000 having the above configuration starts the recording operation upon receiving the recording information and the recording command from the external device, and the first transport unit CV1 causes the recording paper to be moved as in the first embodiment described above. P is guided under the first recording head group HD 1.
- the CPU measures recording start timing based on the first sheet detection signal output from the first sheet detecting unit PK1, and stores the first recording head group HD1 in the recording head control unit HDD. Is controlled, and ink droplets are ejected from the nozzles NZY, NZM, NZC, NZK of each color, and the first recording based on the recording information is performed.
- the recording paper P on which the first recording has been performed is guided under the second recording head group HD2 by the second transport unit CV2, and similarly to the first recording, the second paper detection unit PK1
- the second recording is performed by the second recording head group HD2 at a timing based on the second paper detection signal from the second recording head.
- the ink droplets of the first and second recording head groups HD1 and HD2 are interposed between these different recording papers P.
- the inter-sheet ejection performance recovery processing for restoring the performance of discharging paper will be described.
- the inter-sheet ejection performance recovery process in the third embodiment is performed by individually controlling the first and second ejection performance recovery caps CA1 and CA2, and the control flow is the same. Therefore, only the process flow of the first ejection performance recovery cap CA1 will be described in detail.
- the CPU starts the inter-sheet ejection performance recovery processing shown in FIG.
- step S301 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S302.
- step S302 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 detects the force of detecting the rear end of the recording sheet P. If it is determined that the sheet has been detected, the process proceeds to step S303. If it is determined that the sheet has not been detected, the process proceeds to step S301 to read a sheet detection signal.
- step S303 a timer for detecting the rear end of the recording paper P and measuring the time of the force is started, and the flow proceeds to step S304.
- step S304 it is determined whether the force measured by the timer T matches the predetermined time Ts or not. If it is determined that the force matches, the process proceeds to step S305, and if it is determined that they do not match, it is determined. Step S304 is repeated until they match.
- step S305 the first cam drive motor M3 is driven to apply the cap portion CP of the first ejection performance recovery cap CA1 to the nozzle surface NZP of the first recording head group HD1. Then, the process proceeds to step S306.
- step S306 the suction pump PU is driven to suck ink from the nozzles NZY, NZM, NZC, and NZK of each color, the ink ejection performance is restored, and the flow proceeds to step S307.
- step S307 the first cam drive motor M3 is driven to retract the first discharge performance recovery cap CA1 to the retracted position, and the flow proceeds to step S308.
- step S308 the timer is reset and the process ends.
- the recording paper P corresponds to the recording medium
- the first and second recording head groups HD1 and HD2 correspond to the first and second heads
- the first and second ejection performance recovery Caps CA1 and CA2 and the processing of steps S305 to S307 in FIG. 31 correspond to the ejection performance recovery means.
- the ejection performance recovery means can be accommodated below the conveying surface of the recording paper P, so that the ink jet recording apparatus can be downsized and when recording on the recording paper P is performed.
- the transport of the recording paper P is not obstructed.
- the ejection performance recovery means is opposed to the first and second heads, it is possible to quickly recover the head ejection performance by slightly raising the head when recording is not being performed. .
- the recording is interrupted by using the interval until the recording on one recording paper P is completed and the next recording paper P is conveyed. In other words, it is possible to recover the ejection performance, and it is possible to maintain good printing quality in all continuous printing.
- the recording paper P is described as an example of the recording medium.
- the present invention is not limited to this, and can be applied to recording media other than paper.
- a material resin, metal
- the present invention can be applied to shapes having various properties such as a shape having a high or low flexibility, such as a circular shape or an irregular shape.
- the first and second transport belts VI and V2 are each constituted by four transport belts Via-Vld and V2a-V2d.
- the present invention is not limited to this. It may be composed. From the viewpoint that the recording surface PP of the recording paper P is conveyed as flatly and stably as possible and good recording results are obtained, it is preferable that the recording paper P be composed of a plurality of recording papers.
- the number of the conveyor belts constituting the first conveyor belt VI and the number of the conveyor belts constituting the second conveyor belt V2 do not have to be the same.
- one of the conveyor belts may be one.
- the other may be two.
- the number of transport belts constituting each of the first and second transport belts VI and V2 is set to the same number, and the first and second transport belts are made equal.
- the force is such that the first and second transport belts VI and V2 are directly passed over the drive shaft DS and the first and second driven shafts FS1 and FS2.
- the present invention is not limited to this. That is, the first and second transport belts VI and V2 are used as timing belts, and the drive shaft DS and the first and second driven shafts FS1 and FS2 are provided with timing belt pulleys. Power may be transmitted to the first and second conveyor belts VI and V2.
- the ejection performance is reduced each time the first and second recording head groups HD1 and HD2 complete recording on one recording sheet P. It is made to recover, but it may be made to recover each time recording on multiple sheets is completed.
- first and second ejection performance recovery caps CA1 and CA2 are configured as ejection performance recovery means for recovering the ink ejection performance of the print heads HDla-HDld and HD2a-HD2d.
- the split caps CAla-CAld and CA2a-CA2d are It is connected by a tube TB to a wetting agent tank TA filled with a wetting agent to prevent drying. Further, in the cap portion CP, instead of the ink absorber CT, a wetting agent absorber CT for absorbing a wetting agent is provided.
- the inside of the cap portion CP absorbs the humectant from the humectant tank TA through the tube TB, so that the humectant is moistened.
- the environment is preserved. Therefore, the NZY, NZM, NZC, and NZK forces of the nozzles can also delay that the ink solvent evaporates, the viscosity of the ink increases in the nozzles, and in the worst case, solidifies.
- the ink jet recording apparatus 1000 including the first and second head protection caps CA1 and CA2 as head protection means, when recording is continuously performed on different recording papers P, when these different recording papers P
- a description will be given of a sheet head protection process for maintaining the performance of ejecting ink droplets of the first and second recording head groups HD1 and HD2.
- this paper interval head protection processing is performed by individually controlling the first and second head protection caps CA1 and CA2, and the control flow is the same. Therefore, only the processing flow of the first head protection cap CA1 will be described in detail.
- the CPU starts the paper interval head protection processing shown in FIG. I do.
- step S321 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S322.
- step S322 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 detects the force at which the trailing edge of the recording sheet P has been detected. If it is determined that the trailing edge has been detected, the process proceeds to step S323. If it is determined that the trailing edge has not been detected, the process proceeds to step S321 to read the sheet detection signal.
- step S323 a timer for detecting the trailing edge of the recording paper P and measuring the force time T is started, and the process proceeds to step S324.
- step S324 it is determined whether or not the force measured by the timer matches the predetermined time Ts. If it is determined that the forces match, the process proceeds to step S325, where it is determined that they do not match. And step S324 is repeated until they match.
- step S325 the first cam drive motor M3 is driven to bring the cap portion CP of the first head protection cap CA1 into contact with the nozzle surface NZP of the first recording head group HD1, and the step is performed. Move on to S326.
- step S326 a sheet detection signal from the first sheet detection unit PK1 is read, and the flow advances to step S327.
- step S327 based on the sheet detection signal from the first sheet detection unit PK1, it is determined whether or not the first sheet detection unit PK1 has detected the leading edge of a new recording sheet P, and the leading edge is determined. If it is determined that the sheet has been detected, the process proceeds to step S328. If it is determined that the sheet has not been detected, the process proceeds to step S326 to read the sheet detection signal.
- step S328 the first cam drive motor M3 is driven to retreat the first head protection cap CA1 to the retreat position, and the flow proceeds to step S329.
- step S329 the timer is reset and the process ends.
- the processing in steps S325 and S328 corresponds to the head protection means.
- the head protection means can be accommodated below the transport surface of the recording paper P, so that the size of the ink jet recording apparatus can be reduced. Does not hinder the conveyance of the recording paper P. Further, since the head protection means is opposed to the first and second heads, when recording is not being performed, the head protection means is slightly raised and lowered to quickly attach / detach the head protection means to / from the recording head. It is possible to do so.
- the recording heads HDla-HDld and HD2a-HD2d and the head-protecting means are made as small as possible without interfering with the conveyance of the recording medium, so that the recording heads can be protected in a short time. It becomes possible. That is, when the recording information is sent and the recording is started by the external device, the supplied recording paper P reaches below the recording heads HDla—HDld and HD2a—HD2d, and these recording heads HDla—HDld and HD2a—HD2d From The head can be protected until just before the ink droplet is ejected. Therefore, it is possible to extremely reduce the possibility that a foreign matter such as floating paper dust adheres to the nozzle surface NZP or enters the nozzle.
- HD2d can be protected. Therefore, it is possible to increase the frequency of protection of the print head without delaying the time until continuous printing is completed, and it is possible to suppress a decrease in print quality due to an increase in ink viscosity until printing is completed. Become.
- the recording heads HDla—HDld and HDld HD2a—HD2d is protected, but it may be protected each time recording on multiple sheets is completed.
- the paper transport unit CV does not include the second transport unit CV2 according to the third embodiment, and FIG. It has the same configuration as the first transport section CV1 except that the transport belt width W3, belt interval L, and force L> W3 as shown, and the same parts as those in FIG. The description is omitted by attaching the reference numerals.
- the inkjet recording apparatus 1100 further includes a solenoid SL and a solenoid control unit SLD for controlling the solenoid SL.
- a line head HD having a recording area such as a paper width is commonly used as a recording head.
- this recording head HD has a yellow, magenta,
- the nozzles NZY, NZM, NZC, and NZK of each color of ann and black are arranged in the X direction, and are arranged on the same line in the Y direction.
- the recording head HD is arranged such that the nozzle rows NZYL, NZML, NZCL, and NZKL of the respective color nozzles are transport belts Va, Vb,
- the recording area PP is provided so as to cross the entire recording area in the width direction of the recording surface PP across the Vc and Vd. That is, as shown in FIG. 37 (b), the nozzle rows NZYL, NZML, NZCL, and NZKL of each color are separately provided for the non-belt nozzle NTV facing the belt between the transport belts Va—Vd and the transport belt Va—Vd.
- the recording head HD uses the power from the solenoid SL transmitted through the head moving mechanism TMC shown in Fig. 38 to move the belt facing nozzle TVa-TVd to the recording position and the second position facing the transport belt Va-Vd.
- the nozzle NTV that moves in the width direction from the discharge performance recovery position 1 and the belt non-facing nozzle NTV is moved between the discharge performance recovery position and the second discharge performance recovery position facing the transport belt Va-Vd.
- the head moving mechanism TMC has a configuration in which a linear guide LG fixed to a recording head support HDB supports an arm ARM of the recording head HD.
- This linear guide LG smoothly guides the recording head HD when the power of the solenoid SL is transmitted to the recording head HD via the solenoid connecting portion SLC.
- the driving of this solenoid SL is controlled by a solenoid control unit SLD as shown in FIG.
- FIG. 39 is a diagram schematically showing a cross section taken along line F—F in FIG.
- FIG. 5 is a diagram illustrating an arrangement configuration of a discharge performance recovery cap CA.
- the discharge performance recovery cap CA has four divided caps CAa-CAd.
- Dividing cap CAa- CAd of the CAa- CAd is disposed at the position between the conveyor belts of the conveyor belts Va- Vd, facing the non-belt nozzle NTV of the recording head HD with the conveyance path PC of the recording paper P in between.
- the split cap CAd is The recording head HD is arranged so as to be adjacent to the divisional cap CAc with the belt Vd in between and facing the outer facing nozzle STV of the recording head HD with the transport path PC in between.
- the width of the divided caps CAa-CAd is set wider than the width of the belt-facing nozzles TVa-TVd.
- the recording paper P is guided under the recording head HD as in the first embodiment, as shown in FIG. 34 (b). Then, the recording head HD is controlled by the recording head control unit HDD, and recording is performed on the recording surface PP.
- the recording head HD moves the belt facing nozzle TVa-TVd to the recording position where the transport belt Va-Vd faces the transport belt Va-Vd.
- the split caps CAa-CAd are in the retracted position in which the tip of the cap portion CP is located below the transfer path PC.
- the configurations of the discharge performance recovery cap CA and the cap lifting / lowering unit UD are the same as those in the first embodiment, and thus the description thereof will be omitted, and the discharge performance recovery operation will be described.
- the discharge performance recovery operation in the fourth embodiment includes a first discharge performance recovery operation of suctioning ink from the belt non-facing nozzle NTV and the outward facing nozzle STV, and ink suction from the belt facing nozzle TVa-TVd.
- the second ejection performance recovery operation is performed.
- the discharge performance recovery cap CA is raised from the state shown in FIG. 39 (a) at the retracted position by the cap lifting / lowering unit UD shown in FIG. 34 (b), and FIG. As shown in (b), it comes into contact with the recording head HD. Then, the cap portions CP of the divided caps CAa-CAc and CAd cover the non-belt facing nozzle NTV and the outer facing nozzle STV, and the ink is sucked by the suction pump PU as in the first embodiment. After the ink is sucked, the ejection performance recovery cap CA returns to the retracted position shown in FIG. 39 (a). This completes the first ejection performance recovery operation.
- FIG. 40 is a diagram for explaining the discharge performance recovery operation of the belt facing nozzles TVa-TVd.
- FIG. 40 (a) shows a state in which the discharge performance recovery cap CA is at the retracted position
- FIG. This shows a state where the ejection performance recovery cap CA has risen.
- the recording head HD moves the head moving mechanism TMC as shown in FIG. 40 (a).
- the belt facing nozzle TVa-TVd is moved by the solenoid SL to the position facing the split cap CAa-CAd.
- the cap portion CP of the divided cap CAa-CAd moves the belt facing nozzle TVa-TVd and the belt non-facing nozzle NTV.
- the ink is sucked by the suction pump PU, covering a part of the outer facing nozzle STV. That is, the nozzle force at the boundary between the belt non-facing nozzle NTV and the belt facing nozzles TVa-TVd of the outer facing nozzle STV also overlaps and sucks ink.
- the ink jet recording apparatus 1100 of the fourth embodiment when recording is continuously performed on different recording papers P, a paper interval for recovering the performance of ejecting ink droplets of the recording head HD between these different recording papers P is used.
- the ejection performance recovery processing will be described.
- the CPU starts the inter-sheet ejection performance recovery processing shown in FIG.
- step S401 a sheet detection signal from the sheet detection unit PK1 is read, and the flow advances to step S402.
- step S402 based on the sheet detection signal from the sheet detection unit PK1, it is determined whether or not the sheet detection unit PK1 has detected the trailing edge of the recording sheet P, and it is determined that the trailing edge has been detected. Then, the process proceeds to step S403, and if it is determined that the sheet has not been detected, the process proceeds to step S401 to read the sheet detection signal.
- step S403 a timer for detecting the trailing edge of the recording paper P and measuring the time of force is started, and the flow proceeds to step S404.
- step S404 the time T measured by the timer matches the predetermined time Ts. It is determined whether or not the force has been applied. If it is determined that the forces match, the process proceeds to step S405. If it is determined that they do not match, step S404 is repeated until the forces match.
- step S405 the cam drive motor M3 is driven to bring the cap portion CP of the ejection performance recovery cap CA into contact with the nozzle surface NZP of the recording head HD, and the flow proceeds to step S406.
- step S406 the suction pump PU is driven to suck ink from the non-belt facing nozzle NTV and the outer facing nozzle STV to recover the ink discharge performance, and then the process proceeds to step S407.
- step S407 the cam drive motor M3 is driven to retract the ejection performance recovery cap CA to the retracted position, and the flow advances to step S408.
- step S408 the print head HD is moved to the second ejection performance recovery position, and the flow advances to step S409.
- step S409 the cam drive motor M3 is driven to bring the cap portion CP of the ejection performance recovery cap CA into contact with the nozzle surface NZP of the recording head HD, and the flow proceeds to step S410.
- step S410 the suction pump PU is driven to suck ink from the belt facing nozzle TVa, one TVd, the belt non-facing nozzle NTV, and part of the outer facing nozzle STV, and the ink ejection performance is restored.
- step S411 the suction pump PU is driven to suck ink from the belt facing nozzle TVa, one TVd, the belt non-facing nozzle NTV, and part of the outer facing nozzle STV, and the ink ejection performance is restored.
- step S411 the cam drive motor M3 is driven to retract the discharge performance recovery cap CA to the retracted position, and the process proceeds to step S412.
- step S412 the recording head HD is moved to the recording position, and the flow advances to step S413.
- step S413 the timer is reset and the process ends.
- the processing of steps S405 to S407 and steps S409 to S411 in FIG. 41 corresponds to the ejection performance recovery means, and the processing of steps S408 and S412 corresponds to the head moving means.
- the ejection performance recovery cap CA corresponds to the ejection performance recovery means
- the solenoid SL and the head moving mechanism TMC correspond to the head movement means
- the non-belt nozzle NTV corresponds to the facing nozzle.
- TVa-TVd corresponds to non-facing nozzles.
- the configuration of the paper transport unit CV and the ejection performance recovery cap CA can be simplified, and the ink ejection performance can be recovered with the ejection performance recovery cap that is smaller than the number of recording heads. Further, it is possible to store the ejection performance recovery means below the conveyance surface of the recording paper P. Therefore, the size of the ink jet recording apparatus capable of recovering the ejection performance of the head can be further reduced.
- the recording head HD according to the fourth embodiment may be configured to have the required size integrally, or may be configured by arranging a plurality of separate heads so as to have the required size. Good. If the head is composed of multiple divided heads, for example, if some of the nozzles in the recording head HD are damaged, the cost of replacement can be kept low by replacing only the head with the damaged nozzle. .
- a head moving mechanism TMC that moves the recording head HD has a ball screw connected to the rotating shaft of the motor instead of the solenoid SL, and the recording head HD is fixed via a ball nut fixed to the recording head HD. It may be configured to transmit power to the.
- the ejection performance is restored each time the recording head HD completes recording on one sheet of recording paper P. However, recording on a plurality of sheets is completed. I will try to recover every time.
- the head moving means moves the print head HD to change the position of the print head HD relative to the ejection performance recovery cap CA.
- the discharge performance recovery cap CA may be moved in the width direction by the cap moving mechanism TCA and the cylinder CL shown in FIG. 42 (a).
- a linear guide LG fixed to the base of the housing supports the transport support section CVB.
- the transport support section CVB supports the paper transport section CV, the ejection performance recovery cap CA, and the cap elevating section UD, and is connected to the drive shaft of the cylinder CL.
- the cylinder CL generates power by applying pressure to the fluid to reciprocate the piston.
- the ejection performance recovery cap CA moves together with the paper transport unit CV and the cap elevating unit UD from the cylinder CL via the cap moving mechanism TCA.
- the force is moved between the first discharge performance recovery position and the second discharge performance recovery position by the force.
- the cylinder CL and the cap moving mechanism TCA correspond to the discharge performance recovery moving means.
- the force for moving the cap moving mechanism TC A by the force of the cylinder CL is not limited to this. It is moved by the power of the motor through a mechanism that converts it to a.
- the inkjet recording apparatus 1200 includes a first spur group between the recording heads HD la—HD Id constituting the first recording head group HD1.
- SP1 is arranged, and a second spur group SP2 is arranged between the recording heads HD2a and HD2d constituting the second recording head group HD2.
- the paper transport section CV has a transport section between the first and second driven shafts FS1 and FS2 shown in FIG. It has a configuration in which one conveyor belt V is stretched between the shaft FS and the drive shaft DS.
- the ink jet recording apparatus 1200 differs from the ink jet recording apparatus 1000 of the third embodiment in that the first and second ejection performance recovery caps CA1 and CA2 are omitted, and the configuration of the paper transport section CV is different. Except for this, it has the same configuration as the inkjet recording apparatus 1000.
- portions corresponding to those of the inkjet recording apparatus 1000 are denoted by the same reference numerals, and description thereof is omitted.
- the first and second spur groups SP1 and SP2 are composed of spurs SPla—S Pld and SP2a—SP2d, respectively.
- each of the spurs SPla-SPld and SP2a-SP2d has an outer peripheral surface sandwiching the conveyance path PC of the recording paper P as shown in FIG. 46, which is a diagram schematically showing a GG cross section in FIG. And is arranged so as to be in contact with the conveyor belt V. Note that, in FIG. 46, the downstream side from the drive shaft DS is omitted to facilitate the configuration.
- each of these spurs SPla-SPld and SP2a-SP2d is located on the outer peripheral surface of the roller that can rotate around the spur rotation « ⁇ . Are provided with radial projections, and the top of the projections and the conveyor belt V regulate the lifting of the recording paper P across the recording paper P.
- the spurs SPlb—SPld are, as shown in FIG. 43, the recording heads HD 1a—HD 1d of the first recording head group HD 1 respectively.
- the recording head HDla-HDld is arranged at a substantially central portion of the length in the X direction of the recording head HDla-HDld.
- the spurs SPla are arranged in line with the spurs SPlb with the recording head HDla interposed.
- the spurs SP2a-SP2c of the second spur group SP2 are disposed between the recording heads HD2a-HD2d, similarly to the first spur group SP1, and the spur SP2d is connected to the spur SP2c with the recording head HD2d interposed therebetween. They are arranged side by side.
- FIG. 47 (a) is a JJ sectional view in FIG. It is supported by a support plate SB fixed to a casing (not shown).
- the recording heads HDla-HDld and HD2a-HD2d are fixed to the support plate SB such that the nozzle surface NZP, which is the surface on which the nozzle is formed through the support plate SB, faces the transport path PC.
- Each of the spurs SPla-SPld and SP2a-SP2d penetrates the support plate SB as shown in Fig. 47 (b), which is a view showing the details of the portion Q in Fig. 47 (a). Is in contact with the transport path PC, and is rotatably supported by the spur rotation tree K inserted into the support plate SB.
- the inkjet recording apparatus 1200 having the above-described configuration receives recording information and a recording command from an external device. When it is received, the recording operation is started.
- the recording paper P is supplied to the gate roller GR one by one from a paper cassette (not shown) holding a plurality of recording papers P by the paper supply unit KS shown in FIG. Paper.
- the recording paper P fed to the gate roller GR is corrected by the gate roller GR for inclination in the X direction and misalignment in the Y direction, and is sent out to the paper transport section CV.
- the recording paper P is charged by the static electricity applying unit EC while being sent from the gate roller GR to the paper transport unit CV.
- the recording paper P which is charged and has an attraction force to the transport belt V, is transported by rotating the drive shaft DS by the transport unit drive motor M0, and rotating the transport belt V counterclockwise in FIG. It is adsorbed on the outer peripheral surface of the belt V, is conveyed by the power of the conveyance unit driving motor MO, and is guided under the first recording head group HD1.
- the first paper detection unit PK1 shown in FIG. 48 detects the recording paper P and indicates that the recording paper P has been detected. Send 1 paper detection signal to CPU.
- the CPU measures the timing to start recording based on the first sheet detection signal from the first sheet detection unit PK1, and sends a first recording command to the recording head control unit HDD shown in FIG.
- the recording head control unit HDD controls the first recording head group HD1 based on the first recording instruction, and controls the recording paper P that is continuously moved below the nozzle surface NZP by the transport belt V.
- the first recording is performed by selectively discharging ink droplets from the nozzles NZY, NZM, NZC, NZK of each color on the recording surface PP based on the recording information.
- the recording paper P on which the first recording has been performed is further transported by the transport belt V, and is guided under the second recording head group HD2.
- the second paper detection unit PK2 shown in Fig. 48 detects the recording paper P, and indicates that the recording paper P has been detected. Send the paper detection signal of 2 to the CPU.
- the CPU measures the timing to start recording based on the second sheet detection signal from the second sheet detection unit PK2, and sends a second recording command to the recording head control unit HDD shown in FIG.
- the recording head control unit HDD controls the second recording head group HD2 based on the second recording instruction, and the recording paper continuously moved under the nozzle surface NZP by the transport belt V.
- Nozzle NZY, NZM, NZC, NZK of each color is selectively ejected to the recording surface PP of P based on the recording information to perform the second recording.
- the recording on one recording paper P is completed, and the recording paper P is discharged out of the inkjet recording apparatus 1 by the paper discharge unit EJ.
- the recording operation is completed, and if unrecorded recording information remains, new recording paper P is fed to the gate roller GR. The recording operation is continued until the recording of all the recording information is completed.
- the first and second recording head groups HD1 and HD2 correspond to the first and second head groups
- the recording paper P corresponds to the recording medium
- the spurs SPla-SPld, SP2a- SP2d supports rollers as a means of restricting the lifting of recording media
- the recording head HDla is formed by the spurs SPla-SPld and SP2a-SP2d.
- HDld, HD2a Because the curling of the recording paper P under HD2d is corrected, the space between the recording surface PP and the recording head HDla— HDld, HD2a—HD2d is maintained properly, and good recording quality can be obtained.
- the recording medium P has been described as an example of a recording medium.
- the present invention is not limited to this, and can be applied to recording media other than paper.
- the present invention can be applied to a film made of a material such as resin and having various shapes and dimensions such as a circular shape and an irregular shape.
- the transport belt V is directly passed over the drive shaft DS and the driven shaft FS, but is not limited to this. That is, the transport belt V may be used as a timing belt, a pulley for a timing belt may be provided on the drive shaft DS and the driven shaft FS, and power may be transmitted to the transport belt V via the pulley for the timing belt.
- one spur is provided between the recording heads.
- two or more spurs may be provided. This is preferable because the floating of the recording medium is regulated over a wider range over the length of the recording head in the X direction.
- the height of the spurs SPla—SPld and SP2a—SP2d from the conveyor belt V is used to determine the height of the spurs SPla—SPld and SP2a—SP2d—SP2d—if there is no recording paper P between the conveyor belt V and the spurs SPla—SPld.
- the tops of the projections of SP2a to SP2d are set to be in contact with the conveyor belt V, they may be set to have a predetermined gap other than that.
- the recording paper P floats by a predetermined amount from the transport belt V, that is, when the recording paper P exceeds a limit at which the recording quality is not impaired, the top of the predetermined gap is in contact with the recording surface PP. It is set to the distance to touch. Therefore, when the lifting of the transport belt V of the recording paper P is less than the predetermined amount, the spurs SPla—SPld and SP2a—SP2d do not contact the recording surface PP, and the spurs SPla—SPld and SP2a—SP2d It is possible to suppress damage to recording quality.
- the position of the recording head of the spurs SPla-SPld and SP2a-SP2d in the X direction with respect to HDla-HDld, HD2a-HD2d is determined.
- HDla HDld
- HD2a Form set to be located approximately at the center of the length in the X direction of HD2d. Not limited to this.
- the innermost nozzle NU between the recording heads It may be set so that the contact point is located on the line NUL connecting them. In this case, it is preferable in that the floating of the recording paper P under each nozzle NZY, NZM, NZC, NZK can be more effectively regulated.
- the paper transport unit CV has a configuration in which one transport belt V is stretched between the driven shaft FS and the drive shaft DS.
- the present invention is not limited to this.
- FIG. 50 which is a plan view
- FIG. 51 which is a front view
- an ink jet recording apparatus 1210 having the paper transport section CV shown in FIG. Belts VI and V2 are driven by a common transport drive motor MO and drive shaft DS.
- the support plate SB for supporting the recording heads HDla-HDld, HD2a-HD2d and spurs SPla-SPld and SP2a-SP2d is omitted for easy understanding of the configuration. Shown.
- the first and second transport belts VI and V2 which have the same effects as the inkjet recording apparatus 1200, are driven by the common transport section drive motor MO and the drive shaft DS. Therefore, the recording paper P is conveyed under the first and second recording head groups HD1 and HD2 at the same speed, and the difference in recording quality between the first and second recording head groups HD1 and HD2 is suppressed. It becomes possible.
- the first and second transport units CV1 and CV2 are configured as compared with a case where a transport section equivalent to the paper transport unit CV of the inkjet recording apparatus 1210 is configured by one transport belt.
- the circumference of the transfer belts Via-Vld and V2a-V2d can be shortened, and the amplitude of the vibration of the transfer belt due to expansion and contraction can be reduced. Therefore, it is possible to further suppress the fluctuation of the distance between the recording head and the recording surface of the recording medium.
- the paper transport unit CV by configuring the paper transport unit CV by the first and second transport units CV1 and CV2 having a short length, the slack of the belt during transport is prevented, and the recording medium is moved along the flat surface. It can be transported accurately.
- the first and second conveyor belts VI and V2 are each constituted by four conveyor belts Via-Vld and V2a-V2d. It may be constituted by books. From the viewpoint that the recording surface PP of the recording paper P is conveyed as flatly and stably as possible and good recording results are obtained, it is preferable that the recording paper P be composed of a plurality of recording papers.
- the force of the same number of the transport belts of the first transport belt VI and the second transport belt V2 is not limited to this. That is, for example, one transport belt may be constituted by one belt, and the other transport belt may be constituted by two belts. From the viewpoint of suppressing fluctuations in the transport speed of the recording paper P and obtaining good recording quality, the number of transport belts constituting each of the first and second transport belts VI and V2 is set to the same number, and the first And the second driven shafts FS1 and FS2 have the same magnitude of force applied to each other, thereby canceling out the reaction force generated on the drive shaft DS and, in all the transport belts, the tension per one belt. Preferred in that they can be equal.
- the first and second recording head groups HD1 and HD2 are configured such that individual recording heads HDla-HDld and HD2a-HD2d are provided, respectively.
- the spurs SPla-SPld and SP2a-SP2d may be integrally formed as long as the space for disposing them is secured.
Landscapes
- Ink Jet (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005517915A JP4274180B2 (ja) | 2004-02-16 | 2005-01-21 | インクジェット記録装置 |
CN2005800008106A CN1842478B (zh) | 2004-02-16 | 2005-01-21 | 喷墨记录装置 |
EP05703999A EP1717175A4 (en) | 2004-02-16 | 2005-01-21 | INK JET RECORDING DEVICE |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004037997 | 2004-02-16 | ||
JP2004037996 | 2004-02-16 | ||
JP2004-037999 | 2004-02-16 | ||
JP2004-037997 | 2004-02-16 | ||
JP2004-037998 | 2004-02-16 | ||
JP2004037999 | 2004-02-16 | ||
JP2004-037996 | 2004-02-16 | ||
JP2004037998 | 2004-02-16 | ||
JP2004040151 | 2004-02-17 | ||
JP2004-040151 | 2004-02-17 | ||
JP2004-092358 | 2004-03-26 | ||
JP2004092358 | 2004-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005077795A1 true WO2005077795A1 (ja) | 2005-08-25 |
Family
ID=34865525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000778 WO2005077795A1 (ja) | 2004-02-16 | 2005-01-21 | インクジェット記録装置 |
Country Status (4)
Country | Link |
---|---|
US (3) | US7316477B2 (ja) |
EP (1) | EP1717175A4 (ja) |
JP (1) | JP4274180B2 (ja) |
WO (1) | WO2005077795A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007055107A (ja) * | 2005-08-25 | 2007-03-08 | Seiko Epson Corp | インクジェットプリンタ |
JP2007069448A (ja) * | 2005-09-07 | 2007-03-22 | Seiko Epson Corp | インクジェット記録装置 |
JP2007105970A (ja) * | 2005-10-13 | 2007-04-26 | Seiko Epson Corp | インクジェット記録装置 |
JP2012011673A (ja) * | 2010-06-30 | 2012-01-19 | Brother Industries Ltd | 画像記録装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10341589A1 (de) * | 2003-09-09 | 2005-03-31 | Giesecke & Devrient Gmbh | Vorrichtung zum Bearbeiten von Blattgut |
DE102005057874B4 (de) * | 2005-12-02 | 2011-02-24 | Eastman Kodak Co. | Vorrichtungen zum Transport von bogenförmigem Material |
US20070206038A1 (en) * | 2006-03-03 | 2007-09-06 | Richard Baker | Ink jet printing with multiple conveyors |
JP4251214B2 (ja) * | 2006-12-28 | 2009-04-08 | セイコーエプソン株式会社 | インクジェットプリンタ |
JP2008183898A (ja) * | 2007-01-05 | 2008-08-14 | Seiko Epson Corp | インクジェットプリンタ |
JP2008254420A (ja) * | 2007-03-15 | 2008-10-23 | Seiko Epson Corp | 印刷装置 |
JP4329835B2 (ja) * | 2007-03-28 | 2009-09-09 | ブラザー工業株式会社 | 画像記録装置 |
JP4251223B2 (ja) * | 2007-03-28 | 2009-04-08 | ブラザー工業株式会社 | インクジェット記録装置 |
GB0809406D0 (en) | 2008-05-23 | 2008-07-02 | Ffei Ltd | Castellated conveyance system |
JP5209443B2 (ja) * | 2008-11-04 | 2013-06-12 | 株式会社小森コーポレーション | 処理機の駆動制御方法及び駆動制御装置 |
US8985738B2 (en) * | 2009-10-30 | 2015-03-24 | Ncr Corporation | Multipurpose printer protecting print elements from adhesive on the medium |
JP5741787B2 (ja) * | 2009-11-04 | 2015-07-01 | セイコーエプソン株式会社 | 流体噴射装置 |
CN102862387A (zh) * | 2012-10-19 | 2013-01-09 | 深圳市润天智数字设备股份有限公司 | 一种喷墨印刷设备 |
CN107097539B (zh) | 2013-11-12 | 2019-12-31 | 精工爱普生株式会社 | 打印机 |
CN104290462A (zh) * | 2014-08-12 | 2015-01-21 | 浙江工业大学 | 粘附传送式喷墨式票签打印机 |
JP2016193561A (ja) | 2015-04-01 | 2016-11-17 | セイコーエプソン株式会社 | プリンター |
CN105825266B (zh) * | 2016-05-22 | 2018-01-16 | 福建福贞金属包装有限公司 | 铝制品二片罐数量化线控方法 |
US9855775B1 (en) * | 2016-12-12 | 2018-01-02 | Xerox Corporation | Apparatus and method for protecting printheads from irregular media in a printer |
JP2019010742A (ja) * | 2017-06-29 | 2019-01-24 | セイコーエプソン株式会社 | 液体噴射装置 |
JP7404757B2 (ja) * | 2019-10-10 | 2023-12-26 | セイコーエプソン株式会社 | 液体吐出装置 |
CN111745966B (zh) * | 2020-07-06 | 2022-05-24 | 深圳市富源盛电子科技有限公司 | 一种防堵碳纤维3d打印 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11115274A (ja) * | 1997-10-09 | 1999-04-27 | Canon Aptex Inc | シート搬送装置及び画像記録装置 |
JP2002356026A (ja) * | 2001-05-31 | 2002-12-10 | Sharp Corp | インクジェットプリンタ |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2585834A (en) * | 1949-10-20 | 1952-02-12 | Merton A Pocock | Laundry flat piece spreader |
US3951402A (en) * | 1974-03-25 | 1976-04-20 | Skinner Lloyd D | Paper conveyor and guidance system |
US4102253A (en) * | 1976-10-26 | 1978-07-25 | Gannicott David James H | Counting and stacking unit |
US4447817A (en) * | 1982-09-27 | 1984-05-08 | Xerox Corporation | Constant velocity copy sheet transport with ink jet printing |
JPH072559B2 (ja) * | 1985-09-28 | 1995-01-18 | 株式会社サト− | ラベルプリンタのラベル送り出し装置 |
GB2197279B (en) * | 1986-11-06 | 1990-01-17 | Ncr Co | Sheet feeding apparatus |
JPS63302082A (ja) * | 1987-05-31 | 1988-12-08 | Nec Corp | プリンタ |
US5674345A (en) * | 1992-07-01 | 1997-10-07 | Moore Business Forms, Inc. | Linerless label printer applicator |
JP3816550B2 (ja) | 1994-11-07 | 2006-08-30 | キヤノンファインテック株式会社 | プリント媒体搬送装置およびラベルプリンタ |
JP3670428B2 (ja) | 1997-01-28 | 2005-07-13 | 京セラミタ株式会社 | インクジェット記録装置 |
JP4452353B2 (ja) | 1999-10-22 | 2010-04-21 | キヤノンファインテック株式会社 | 印字装置 |
US6588954B2 (en) * | 2000-02-23 | 2003-07-08 | Agfa-Gevaert | Ink jet printer equipped for avoiding undesired belt movement |
US6502922B2 (en) * | 2000-04-04 | 2003-01-07 | Canon Kabushiki Kaisha | Moving up and down apparatus of print head, printing apparatus |
JP2002103638A (ja) | 2000-10-02 | 2002-04-09 | Sharp Corp | インクジェットプリンタのラインヘッドクリーニング装置 |
JP4790107B2 (ja) | 2000-10-13 | 2011-10-12 | オリンパス株式会社 | プリンタ |
JP4524048B2 (ja) * | 2001-01-19 | 2010-08-11 | キヤノンファインテック株式会社 | インクジェット記録装置およびインクジェット記録方法 |
US7771040B2 (en) * | 2002-03-08 | 2010-08-10 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus and transfer belt used therein |
JP4200859B2 (ja) * | 2003-08-27 | 2008-12-24 | 富士ゼロックス株式会社 | インクジェット記録装置及びインクジェット記録方法 |
JP2005081661A (ja) * | 2003-09-08 | 2005-03-31 | Fuji Xerox Co Ltd | 記録装置 |
JP2005088329A (ja) * | 2003-09-17 | 2005-04-07 | Fuji Xerox Co Ltd | 画像形成装置 |
JP4218477B2 (ja) * | 2003-09-19 | 2009-02-04 | 富士ゼロックス株式会社 | インクジェット記録装置 |
-
2005
- 2005-01-21 JP JP2005517915A patent/JP4274180B2/ja not_active Expired - Fee Related
- 2005-01-21 EP EP05703999A patent/EP1717175A4/en not_active Withdrawn
- 2005-01-21 WO PCT/JP2005/000778 patent/WO2005077795A1/ja not_active Application Discontinuation
- 2005-01-26 US US11/043,909 patent/US7316477B2/en not_active Expired - Fee Related
-
2007
- 2007-11-21 US US11/986,645 patent/US7575317B2/en not_active Expired - Fee Related
- 2007-11-21 US US11/986,644 patent/US7661811B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11115274A (ja) * | 1997-10-09 | 1999-04-27 | Canon Aptex Inc | シート搬送装置及び画像記録装置 |
JP2002356026A (ja) * | 2001-05-31 | 2002-12-10 | Sharp Corp | インクジェットプリンタ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1717175A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007055107A (ja) * | 2005-08-25 | 2007-03-08 | Seiko Epson Corp | インクジェットプリンタ |
JP2007069448A (ja) * | 2005-09-07 | 2007-03-22 | Seiko Epson Corp | インクジェット記録装置 |
JP2007105970A (ja) * | 2005-10-13 | 2007-04-26 | Seiko Epson Corp | インクジェット記録装置 |
JP2012011673A (ja) * | 2010-06-30 | 2012-01-19 | Brother Industries Ltd | 画像記録装置 |
Also Published As
Publication number | Publication date |
---|---|
US20080180506A1 (en) | 2008-07-31 |
US7661811B2 (en) | 2010-02-16 |
EP1717175A4 (en) | 2008-05-14 |
US20080180505A1 (en) | 2008-07-31 |
US20050206708A1 (en) | 2005-09-22 |
JP4274180B2 (ja) | 2009-06-03 |
US7575317B2 (en) | 2009-08-18 |
JPWO2005077795A1 (ja) | 2008-01-10 |
EP1717175A1 (en) | 2006-11-02 |
US7316477B2 (en) | 2008-01-08 |
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