recording device

Abstract

The present application provides a recording device, which is characterized in that the structure of the motor for moving the inkjet head and the motor for moving the nozzle cover can cause the device to be large-sized and the cost to be increased. The recording device is provided with: a liquid ejection head which performs recording by ejecting liquid against a medium; an opposing portion which is arranged opposite to the liquid ejection head; a cover portion which covers a liquid ejection surface of the liquid ejection head, and an opening portion is formed on the opposing portion, the cover portion is arranged at a position inside the opening portion and opposite to the liquid ejection surface, the liquid ejection head can be moved in a direction of advancing and retreating relative to the opposing portion by the power of a motor, and in the moving area of the liquid ejection head, a recording position at which recording is performed against the medium and a cover position at which the liquid ejection surface is covered by the cover portion are included.

Description

Technical Field

[0001] The present invention relates to a recording apparatus for performing recording on a medium. Background Technology

[0002] The inkjet printing apparatus described in Patent Document 1 includes an inkjet head, a nozzle cover covering the head surface of the inkjet head to keep the head surface moist, and a baffle that closes the opening of the nozzle cover to keep the inside of the nozzle cover moist.

[0003] The nozzle cap is configured to move between a retracted position facing the head face across the media delivery path and a pressure cap position that moves across the media delivery path toward the head face to cover it, powered by a motor.

[0004] In inkjet printing equipment, in order to automatically adjust the gap between the inkjet head and the printing plate, a structure is sometimes used in which the inkjet head moves forward and backward relative to the printing plate by means of a motor.

[0005] In the inkjet printing apparatus described in Patent Document 1, if such a structure is adopted, both a motor for moving the inkjet head and a motor for moving the nozzle cover are required, which would result in a larger size of the apparatus and increased cost.

[0006] Patent Document 1: Japanese Patent Application Publication No. 2012-153132 Summary of the Invention

[0007] The recording apparatus of the present invention, which solves the above-mentioned problems, is characterized by comprising: a liquid ejection head that records by ejecting liquid relative to a medium; a counter portion disposed opposite to the liquid ejection head; and a cover portion that covers the liquid ejection surface of the liquid ejection head, wherein an opening is formed in the counter portion, the cover portion is disposed inside the opening portion and opposite to the liquid ejection surface, the liquid ejection head is movable in a forward and backward direction relative to the counter portion by means of a motor, and the movement area of ​​the liquid ejection head includes a recording position in which recording is performed relative to the medium and a cover position in which the liquid ejection surface is covered by the cover portion. Attached Figure Description

[0008] Figure 1 A diagram showing the overall media delivery path of the printer.

[0009] Figure 2 This is a perspective view of the opposing part and the cover.

[0010] Figure 3 This is a plan view of the opposing part and the cover part.

[0011] Figure 4 is a perspective view of a cap unit.

[0012] Figure 5 is a diagram showing a drive mechanism that drives a line head.

[0013] Figure 6 is a perspective view of the line head.

[0014] Figure 7 is a perspective view of an opposing portion.

[0015] Figure 8 is a side cross-sectional view of the line head and the opposing portion.

[0016] Figure 9 is a perspective view showing a portion where the line head abuts against the opposing portion.

[0017] Figure 10 is an operation transition diagram when the line head moves between a recording position and a cap position.

[0018] Figure 11 is a cross-sectional view of a support structure that supports the opposing portion.

[0019] Figure 12 is an operation transition diagram when the line head moves between a recording position and a wiping position.

[0020] Figure 13 is a diagram showing a part of a medium transport path of a printer.

[0021] Figure 14 is a perspective view of the opposing portion, a cap portion, and a roller support frame.

[0022] Figure 15 is a perspective view of the roller support frame.

[0023] Figure 16 is a plan view of the roller support frame and a head surface.

[0024] Figure 17 is Figure 16 an enlarged view of part A.

[0025] Figure 18 is a perspective view of a portion where the line head abuts against the roller support frame and the opposing portion.

[0026] Figure 19 is a cross-sectional view of a support structure that supports the roller support frame.

[0027] Figure 20 is an operation transition diagram when the line head moves between a recording position and a wiping position.

[0028] Figure 21 A three-dimensional view of a row head with protruding components.

[0029] Figure 22 This is a diagram showing a portion of the media delivery path, including a row head with protruding components.

[0030] Figure 23 A plan view showing a portion of a row head with protruding components.

[0031] Figure 24 A plan view showing the overall layout of the line head with protruding components.

[0032] Figure 25 This diagram illustrates a portion of the media delivery path in a structure where the protruding component is independent of the horizontal head.

[0033] Figure 26 This diagram illustrates a portion of the media delivery path in a structure where the protruding component is independent of the horizontal head.

[0034] Figure 27 A plan view of the line head and the protruding component in a structure where the protruding component is separate from the line head.

[0035] Figure 28 This is a perspective view of the wiper carriage viewed from below.

[0036] Figure 29 A diagram showing the position of the moving area of ​​the line header.

[0037] Figure 30 The figure illustrates another embodiment of the anti-rotation structure of the wiper carriage.

[0038] Figure 31 The figure illustrates another embodiment of the anti-rotation structure of the wiper carriage.

[0039] Figure 32 The figure illustrates another embodiment of the anti-rotation structure of the wiper carriage.

[0040] Figure 33 The figure illustrates another embodiment of the anti-rotation structure of the wiper carriage.

[0041] Figure 34 The figure illustrates another embodiment of the anti-rotation structure of the wiper carriage.

[0042] Figure 35 A diagram showing the positional relationship between the edge detection unit and the medium during edge detection. Detailed Implementation

[0043] The present invention will now be described schematically.

[0044] The recording device according to the first method is characterized by comprising: a liquid ejection head that records by ejecting liquid relative to a medium; a counter portion disposed opposite to the liquid ejection head; and a cover portion that covers the liquid ejection surface of the liquid ejection head, wherein an opening is formed in the counter portion, the cover portion is disposed inside the opening and opposite to the liquid ejection surface, the liquid ejection head is movable in a forward and backward direction relative to the counter portion by means of a motor, and the movement area of ​​the liquid ejection head includes a recording position in which recording is performed relative to the medium and a cover position in which the liquid ejection surface is covered by the cover portion.

[0045] According to this method, since the moving area of ​​the liquid nozzle, which can move in a forward or backward direction relative to the opposing part by means of a motor, includes a recording position relative to the medium and a cover position where the liquid ejection surface is covered by the cover, there is no need for a drive source to drive the cover, thereby suppressing the increase in size and cost of the device.

[0046] The second method is subordinate to the first method, characterized in that the liquid nozzle has an abutting portion that abuts against the opposing portion, the opposing portion being displaceable along the moving direction of the liquid nozzle and being pressed toward the liquid nozzle by a pressing member, the liquid nozzle abutting against the opposing portion by the abutting portion during its movement from the recording position to the cover position, and the opposing portion moving by overcoming the pressing force applied by the pressing member.

[0047] When the opposing portion is used as a support unit to support the medium, if the opening formed on the opposing portion is large, the medium may enter the opening. Therefore, it is preferable to minimize the size of the opening. However, if the opening is reduced, the opposing portion and the liquid nozzle will interfere when the cover covers the liquid ejection surface, resulting in the problem that the cover cannot cover the liquid ejection surface.

[0048] Therefore, in this configuration, the opposing portion is displaced along the movement direction of the liquid nozzle and pressed towards the liquid nozzle by the pressing member. Furthermore, the liquid nozzle is configured such that, as it moves from the recording position to the cover position, it abuts against the opposing portion via the abutment portion, overcoming the pressing force applied by the pressing member rather than causing the opposing portion to move. This allows for a reduction in the opening size without the opposing portion becoming an obstruction when the cover covers the liquid nozzle surface, thereby suppressing the possibility of media entering the opening when the opposing portion is used as the support unit.

[0049] The third method is subordinate to the second method, characterized in that the liquid ejector head has a plurality of head chips, each head chip having a nozzle for ejecting liquid, the head chips being alternately arranged in an upstream and downstream position along the width direction of the medium, which is a direction intersecting the medium transport direction, the opening being formed in a manner corresponding to the arrangement of the plurality of head chips and in a manner that alternately opens in an upstream and downstream position along the width direction of the medium, and the opposing portion having a support portion supporting the medium between two adjacent head chips in the width direction of the medium.

[0050] According to this method, since the opening is formed in a manner corresponding to the configuration of the plurality of head chips and in a manner that alternates between upstream and downstream positions along the width direction of the medium, and the opposing portion has a support portion that supports the medium between two adjacent head chips in the width direction of the medium, the medium can be properly supported, thereby suppressing the entry of the medium into the opening.

[0051] The fourth method is a method subordinate to the third method, characterized in that the support portion has: a first support portion extending downstream from upstream in the medium conveying direction; and a second support portion extending upstream from downstream in the medium conveying direction.

[0052] According to this method, since the support portion has a first support portion extending downstream from upstream in the medium conveying direction and a second support portion extending upstream from downstream in the medium conveying direction, the medium can be supported more appropriately, thereby further suppressing the entry of the medium into the opening.

[0053] The fifth method is a method subordinate to the fourth method, characterized in that, in the first support portion, the corner at the downstream end of the medium conveying direction is formed into a chamfered shape or an R-angle shape, and in the second support portion, the corner at the upstream end of the medium conveying direction is formed into a chamfered shape or an R-angle shape.

[0054] According to this method, since the corner at the downstream end of the medium conveying direction in the first support portion is formed into a chamfered shape or an R-angle shape, and the corner at the upstream end of the medium conveying direction in the second support portion is formed into a chamfered shape or an R-angle shape, it is possible to suppress the situation where the top end of the medium gets stuck on the second support portion when the medium is conveyed from upstream to downstream in the medium conveying direction. In addition, it is possible to suppress the situation where the top end of the medium gets stuck on the first support portion when the medium is conveyed from downstream to upstream in the medium conveying direction.

[0055] The sixth method is subordinate to the second method and is characterized by comprising: a guide shaft, which is a shaft extending in the moving direction of the liquid nozzle and guiding the opposing portion in the moving direction; a cylindrical portion, which is a cylindrical portion disposed at the opposing portion and guided by the guide shaft through which the guide shaft is inserted; a movement limiting portion, which is a portion for the upper end of the cylindrical portion to abut against and limits the movement of the opposing portion toward the liquid nozzle, and the pressing member pressing the cylindrical portion toward the movement limiting portion.

[0056] According to this method, since the pressing member presses on the cylindrical portion, the cylindrical portion is clamped by the pressing member and the movable positioning part. With this structure, it is possible to suppress the bending of the opposing portion due to the pressing force generated by the pressing member.

[0057] Furthermore, this method is not limited to the second method mentioned above, and can also be applied to any of the third to fifth methods mentioned above.

[0058] The seventh method is a method subordinate to the sixth method, characterized in that the moving part has a covering part that covers the periphery of the upper end of the cylindrical part.

[0059] When a foreign object enters between the upper end of the cylindrical portion and the movable guide portion, the gap between the liquid nozzle and the opposing portion may become disordered, potentially negatively impacting recording quality. However, according to this method, since the movable guide portion has a covering portion that covers the area around the upper end of the cylindrical portion, the entry of foreign objects between the upper end of the cylindrical portion and the movable guide portion can be suppressed, thereby appropriately maintaining the gap between the liquid nozzle and the opposing portion.

[0060] The eighth method is a subordinate method to the sixth method, characterized in that the opposing portion extends along the width direction of the medium, which is a direction intersecting the medium conveying direction, and the cylindrical portion is provided at two locations at both ends of the opposing portion in the width direction of the medium, spaced apart in the medium conveying direction, and the liquid nozzle abuts against the opposing portion between the cylindrical portions provided at the two locations, spaced apart in the medium conveying direction.

[0061] According to this method, since the cylindrical portion is provided at two locations at both ends of the opposing portion in the medium width direction, spaced apart in the medium conveying direction, and the liquid nozzle abuts against the opposing portion between the cylindrical portions provided at the two locations in the medium conveying direction, it is possible to suppress the situation where the opposing portion bends along the medium width direction when the liquid nozzle presses down on the opposing portion.

[0062] Furthermore, this method is not limited to the sixth method mentioned above, and can also be applied to the seventh method mentioned above.

[0063] The present invention will now be described in detail.

[0064] In the following description, inkjet printer 1 will be used as an example of a recording device that performs recording on a medium. Hereinafter, inkjet printer 1 will simply be referred to as printer 1.

[0065] Furthermore, in the XYZ coordinate system shown in the accompanying figures, the X-axis direction is the width direction of the device and also the width direction of the medium being recorded. When viewed from the operator of printer 1, the +X direction is to the left and the -X direction is to the right.

[0066] The Y-axis direction is the depth direction of the device and is along the media transport direction during recording. The +Y direction is the direction from the back of the device toward the front, and the -Y direction is the direction from the front of the device toward the back. In this embodiment, the side in the +Y direction that constitutes the sides surrounding the printer 1 is the front of the device, and the side in the -Y direction is the back of the device.

[0067] The Z-axis direction is along the vertical direction and is the height direction of the device. The +Z direction is the vertical upward direction, and the -Z direction is the vertical downward direction.

[0068] Additionally, in the following text, the direction in which the medium is sent is sometimes referred to as "downstream," and the opposite direction as "upstream."

[0069] The following is for reference Figure 1 The media delivery path of printer 1 will be described below. Figure 1 As shown, printer 1 has a media storage box 2 at the bottom of the device, which is an example of a media storage section. The symbol P indicates the media stored in the media storage box 2. Recording paper is an example of such media. The media storage box 2 is configured to be detachable from the front of the device.

[0070] At the upper part of the media storage box 2, there is a pickup roller 3 driven by a motor (not shown). The pickup roller 3 can move forward and backward relative to the media stored in the media storage box 2. By contacting the media stored in the media storage box 2 and rotating, it feeds the media out of the media storage box 2 in the +Y direction.

[0071] Downstream of the media receiving box 2, there is a feed roller 5 driven by a motor (not shown) and a separation roller 6 subjected to rotational torque by a torque limiter (not shown). The media fed from the media receiving box 2 is separated by being clamped by the feed roller 5 and the separation roller 6, and then further fed downstream.

[0072] Downstream of the feed roller 5 and the separating roller 6, a reversing roller 8 driven by a motor (not shown) is provided. A first clamping roller 9 and a second clamping roller 10 are arranged around the reversing roller 8. The medium is clamped by the reversing roller 8 and the first clamping roller 9, and further clamped by the reversing roller 8 and the second clamping roller 10, thereby being conveyed. The medium's conveying direction is reversed from the +Y direction to the -Y direction by the reversing roller 8, and it is conveyed downstream.

[0073] Downstream of the reversing roller 8, a first conveying roller pair 15 is provided, comprising a drive roller 16 driven by a motor (not shown) and a driven roller 17 capable of driven rotation. The medium is conveyed through the first conveying roller pair 15 to a position opposite the row head 40.

[0074] In addition to the media feed path from the media storage box 2, printer 1 also has a media feed path from the media support section 12. The media support section 12 supports the media in an inclined position, and the supported media is conveyed to the first conveying roller pair 15 by a feed roller 13 driven by a motor (not shown). Reference numeral 14 is a separation roller for which a rotational torque is applied by a torque limiter (not shown).

[0075] A medium detection unit 22 is provided upstream of the first conveying roller pair 15. The control unit 80, described later (see reference...) Figure 5 Based on the detection information from the media detection unit 22, the position of the top of the media relative to the line head 40 can be located. For example, the media can be positioned at the start of recording.

[0076] The line print head 40 is an example of a liquid print head that ejects ink, as an example of a liquid, onto a medium for recording. The line print head 40 is a liquid print head in which multiple ink ejection nozzles 44 are arranged to cover the entire area in the width direction of the medium. The line print head 40 is relatively long and narrow in the width direction of the medium and is configured to be a liquid print head capable of recording over the entire width of the medium without accompanying movement in the width direction of the medium.

[0077] Symbol 42a represents a head surface that is the surface opposite to the medium. Head surface 42a is an example of a liquid ejection surface or nozzle surface. Head surface 42a is formed by plate component 42, which will be described later.

[0078] The printer 1 has an ink collection section (not shown), and ink ejected from the line head 40 is supplied to the line head 40 from the ink collection section via an ink tube (not shown).

[0079] An opposing portion 50 is provided at a position opposite to the head surface 42a of the printhead 40. In this embodiment, the opposing portion 50 defines the gap between the medium and the head surface 42a by supporting the medium. In the following text, the gap between the medium and the head surface 42a will sometimes be referred to as the printing plate gap.

[0080] The line head 40 is configured to move in the direction of advancing or retreating relative to the opposing portion 50, i.e., in the direction of adjusting the platen gap. In this embodiment, the direction of adjusting the platen gap is parallel to the Z-axis direction. In the following text, the movement of the line head 40 in the +Z-axis direction will sometimes be referred to as "rising" and the movement in the -Z-axis direction will sometimes be referred to as "falling".

[0081] Figure 5The diagram illustrates the adjustment mechanism for the printing plate gap. Symbol 81 represents the head movement motor, which serves as the drive source for raising and lowering the line head 40, and symbol 80 represents the control unit that controls the head movement motor 81. The control unit 80 is responsible for the overall control of the printer 1.

[0082] A motor gear 82 is mounted on the motor shaft of the head-moving motor 81, and the motor gear 82 transmits driving force to the pinion 85 via a gear 83. The pinion 85 is fixed on the shaft 86.

[0083] The traveling head 40 is held in a manner that allows it to be displaced in the Z-axis direction via a guide member (not shown). A rack portion 41d is formed on the traveling head 40 along the Z-axis direction, and a pinion 85 meshes with the rack portion 41d to form a rack and pinion mechanism.

[0084] The pinion 85 is mounted on the shaft 86. The pinion 85 is rotated by the rotation of the head moving motor 81, thereby causing the traveling head 40 to rise and fall.

[0085] Furthermore, the rack and pinion mechanism, which consists of the rack section 41d and the pinion 85, is positioned near both ends in the medium width direction relative to the traveling head 40.

[0086] When the sliding head 40 rises, it comes into contact with a rising limit part (not shown), thereby limiting its further rise. The control unit 80 can determine the position of the sliding head 40 at the rising limit by detecting the increase in the motor drive current value when the sliding head 40 comes into contact with the rising limit part.

[0087] Furthermore, an encoder sensor (not shown) is provided in the head movement motor 81, allowing the control unit 80 to detect the rotation amount of the head movement motor 81. Thus, the control unit 80 can detect the amount of movement of the linear head 40 from its upper limit position, i.e., it can determine the current position of the linear head 40.

[0088] The control unit 80 adjusts the gap between the printing plates by raising and lowering the line head 40 based on the type of media included in the received printing data and the thickness of the media. For example, when recording is to be performed on plain paper, the position of the line head 40 is set to the first recording position. When recording is to be performed on special paper that is thicker than plain paper, the line head 40 is positioned to the second recording position, which is higher than the first recording position.

[0089] In addition, the moving area of ​​the line head 40 includes multiple recording positions as described above, as well as a cover position, which is the position when the head is covered by the cover 61 described later, and a wiping position, which is the position when the head surface 42a is wiped by the wiper 36 described later.

[0090] In this embodiment, the aforementioned positions of the line head 40, facing the +Z direction, are sequentially designated as the cover position, the first recording position, the second recording position, and the wiping position.

[0091] Return to Figure 1 Downstream of the line head 40, a second conveyor roller pair 19 is provided, comprising a drive roller 20 driven by a motor (not shown) and a driven roller 21 capable of being driven to rotate. The recorded medium is conveyed downstream via the second conveyor roller pair 19.

[0092] A third conveyor roller pair 27 is provided downstream of the second conveyor roller pair 19, and further, a discharge roller pair 28 is provided downstream of the third conveyor roller pair 27. The third conveyor roller pair 27 and the discharge roller pair 28 are configured as a paper-face-down discharge path, and the recorded medium is discharged to the discharge tray 29 via the discharge roller pair 28 with the nearest recording surface facing down.

[0093] Next, refer to Figure 2 The following figures will describe the cover 61 of the head chip 43 covering the head 40. Since the head chip 43 is provided on the head surface 42a, the cover 61 can also be referred to as a component that covers a portion of the head surface 42a. Furthermore, since a nozzle 44 is provided on the head chip 43, the cover 61 can also be referred to as a component that covers the nozzle 44. The head chip 43 will be described again later.

[0094] like Figure 2 As shown, an opening 50a is formed on the opposing portion 50. Furthermore, a plurality of cover portions 61 are provided on the inner side of the opening 50a.

[0095] Figure 4 This is a perspective view of a cover unit 60 having a cover portion 61. The cover unit 60 is configured such that a plurality of cover portions 61 are provided on a base portion 62.

[0096] The cover portion 61 has an elongated shape in the X-axis direction and includes a cover body portion 61b formed of a resin material or the like, and an elastic portion 61a formed of an elastic material such as rubber as a contacting part with the head surface 42a. The cover body portion 61b is held in a manner that allows it to be displaced in the Z-axis direction by a guide portion (not shown) formed on the base portion 62, and the movement limit in the +Z direction is defined by a limiting portion (not shown) formed on the base portion 62. The cover body portion 61b is pressed in the +Z direction by a cover spring 63, which is an example of a pressing member. In this embodiment, two cover springs 63 are provided for one cover body portion 61b.

[0097] Waste liquid pipes 64 are connected to each cap body 61b. The waste liquid pipes 64 are connected to a pump (not shown). When the pump is operated with the cap 61 covering the head surface 42a, a negative pressure is generated inside the cap 61, thereby drawing ink from the nozzles 44 of the print head 40.

[0098] Furthermore, when the head 40 moves to the cover position, the cover 61 is pressed slightly in the -Z direction against the pressing force of the cover spring 63, thereby making the elastic part 61a fit tightly against the head surface 42a.

[0099] The cover portion 61 is alternately arranged at upstream and downstream positions along the X-axis direction, i.e., the direction of the medium width. In this embodiment, three cover portions 61 are provided at the upstream position (+Y direction) and four cover portions 61 are provided at the downstream position (-Y direction).

[0100] This configuration of the cover 61 corresponds to the configuration of the head chip 43 in the row header 40.

[0101] Figure 6 The diagram illustrates the external structure of the line print head 40. As shown, the line print head 40 has a plate member 42 on a base 41. The base 41 is a structure with internal channels for supplying ink (not shown) to the print head chip 43 via ink receiving sections.

[0102] Plate component 42 is a metal plate, which forms head surface 42a.

[0103] A plurality of openings 42d are formed on the plate component 42, and a head chip 43 is disposed in each of the openings 42d. A plurality of nozzles 44 are disposed on the head chip 43 along the dielectric width direction (see reference). Figure 1 The board component 42 and the head chip 43 are arranged in such a way that they are on the same plane.

[0104] Furthermore, in this embodiment, cutouts, indicated by symbols 42b and 42c, are formed on the periphery of the plate member 42. The cutout indicated by symbol 42b is called the upstream cutout, and the cutout indicated by symbol 42c is called the downstream cutout.

[0105] Furthermore, a recess 41b is formed on the base 41 at a position corresponding to the cutout of the plate member 42. All recesses 41b are formed in a shape that is recessed in the +Z direction at least from the plate member 42.

[0106] Furthermore, at both ends of the base 41 in the medium width direction, a first abutment portion 41a, which will be described later, is formed in a manner that protrudes in the -Z direction. In addition, at both ends of the base 41 in the medium width direction, two second abutment portions 41c are provided at intervals along the Y-axis direction.

[0107] The head chip 43 is alternately arranged at upstream and downstream positions along the X-axis direction, i.e., the dielectric width direction. In this embodiment, three head chips 43 are provided at the upstream positions along the dielectric width direction, and four head chips 43 are provided at the downstream positions along the dielectric width direction. Thus, as shown in the reference... Figure 4 As described, the cover portion 61 covering the head chip 43 is alternately configured in the upstream and downstream positions along the dielectric width direction.

[0108] The head chip 43 is formed in an elongated shape along the width of the medium, and has a plurality of nozzles 44 along the width of the medium (see reference). Figure 1 ).

[0109] Next, the wiper 36 will be described.

[0110] like Figure 2 As shown, printer 1 includes a wiper frame 30 extending along the width of the media. A wiper drive motor 31 is provided at the +X end of the wiper frame 30. A drive pulley 33 is provided on the motor shaft of the wiper drive motor 31. Furthermore, a driven pulley 34 is provided at the -X end of the wiper frame 30. A seamless belt 32 is wound around the drive pulley 33 and the driven pulley 34. A wiper carriage 35 is fixed to a portion of the seamless belt 32. When the seamless belt 32 rotates in a circle due to the rotation of the wiper drive motor 31, the wiper carriage 35 moves along the X-axis.

[0111] In this embodiment, the wiper carriage 35 will Figure 2 The position, i.e., the end position in the +X direction, is set as the initial position. When the device is powered off and in recording standby mode, the wiper carriage 35 is positioned in the initial position.

[0112] When the wiper carriage 35 moves from its end in the -X direction towards the +X direction and reaches its initial position, it abuts against a movement restriction part (not shown), thereby limiting its further movement in the +X direction. The control unit 80 can determine the initial position of the wiper carriage 35 by detecting the increase in the motor drive current value when the wiper carriage 35 abuts against the movement restriction part.

[0113] Furthermore, an encoder sensor (not shown) is provided in the wiper drive motor 31, allowing the control unit 80 to detect the amount of rotation of the wiper drive motor 31. As a result, the control unit 80 can detect the amount of movement of the wiper carriage 35 from its initial position, thus enabling it to determine the current position of the wiper carriage 35.

[0114] A wiper 36 is mounted on the wiper carriage 35. The wiper 36 is made of an elastic material such as rubber, and by moving the wiper carriage 35 in an elastically contacting state with the head surface 42a in the media width direction, it wipes the head surface 42a, especially the head chip 43. The ink removed by wiping is stored in the wiper carriage 35.

[0115] In addition, the wiper carriage 35 can be formed into a box shape with an open top, or into a semi-closed shape with only a partial opening of the wiper 36.

[0116] like Figure 12 As shown, a fitting hole 35a is provided at the end of the wiper carriage 35 in the -X direction. A one-way valve (not shown) is provided in the fitting hole 35a, which is configured to prevent ink stored in the wiper carriage 35 from leaking out.

[0117] An ink recovery section 37 is provided at the -X direction end of the moving area of ​​the wiper carriage 35. The ink recovery section 37 has a suction section 37a that can engage with the fitting hole 35a of the wiper carriage 35. When the wiper carriage 35 moves to the -X direction end, the suction section 37a engages with the fitting hole 35a. When the suction section 37a engages with the fitting hole 35a, the aforementioned one-way valve opens. By driving a pump (not shown) provided on the ink recovery section 37 in this state, the ink stored in the wiper carriage 35 is sucked up. As an example, the ink suction implemented by the ink recovery section 37 is performed when the power of the device is turned off and when the number of times the head surface 42a is wiped by the wiper 36 reaches a predetermined number of times.

[0118] Alternatively, the ink recovery section 37 can be provided at the end in the -X direction instead of at the end in the +X direction, i.e., at the initial position side of the wiper carriage 35. Furthermore, in this case, it can be configured such that the suction section 37a engages with the fitting hole 35a when the wiper carriage 35 is in the initial position.

[0119] Next, the opposing part 50 will be explained.

[0120] like Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, on the opposing portion 50, a plurality of support ribs 50b extending in the Y-axis direction, i.e. the medium conveying direction, are formed at appropriate intervals along the medium width direction.

[0121] Furthermore, an opening 50a is formed on the opposing portion 50, and a cover 61 is disposed inside the opening 50a.

[0122] The opening 50a is formed in a manner corresponding to the configuration of the plurality of head chips 43, in other words, in a manner corresponding to the configuration of the plurality of cover portions 61, and in a manner in which it alternately opens at the upstream and downstream positions along the width direction of the medium.

[0123] By forming the opening 50a in this manner, a support portion represented by symbols 50c and 50d is formed between two adjacent cover portions 61 in the medium width direction on the opposing portion 50. Hereinafter, the support portion represented by symbol 50c will be referred to as the first support portion 50c, and the support portion represented by symbol 50d will be referred to as the second support portion 50d.

[0124] The first support portion 50c extends downstream from the upstream end of the opening portion 50a, and a chamfered portion 50e is formed at the corner of its downstream end. Furthermore, the second support portion 50d extends upstream from the downstream end of the opening portion 50a, and a chamfered portion 50f is formed at the corner of its upstream end.

[0125] The chamfered portion 50f prevents the top of the medium from getting stuck on the second support portion 50d when the medium is being transported from upstream to downstream. Furthermore, the chamfered portion 50e prevents the top of the medium from getting stuck on the first support portion 50c when the medium is being transported from downstream to upstream.

[0126] Alternatively, chamfered portions 50e and 50f can also replace the chamfered shape to form an R-angle shape.

[0127] Next, the opposing portion 50 is supported at both ends in the media width direction by the main frame 7 that constitutes the base of the printer 1. Figure 11 This refers to the support structure 55 that supports the opposing part 50. The support structure 55 includes a guide shaft 51, a cylindrical part 50g, a blocking member 53, a screw 52, ​​and a pressing spring 54.

[0128] More specifically, a guide shaft 51 is provided on the main frame 7. A cylindrical portion 50g is formed on the opposing portion 50, and the guide shaft 51 enters the cylindrical portion 50g. Thus, the cylindrical portion 50g, i.e., the opposing portion 50, is provided in a manner that allows for displacement in the Z-axis direction.

[0129] A pressing spring 54, which serves as an example of a pressing member, is provided on the guide shaft 51, and the opposing part 50 is pressed in the +Z direction by the pressing spring 54.

[0130] The upper end of the guide shaft 51 is configured as a screw hole, which allows the screw 52 to be engaged. A stop member 53 is inserted between the screw 52 and the upper end of the guide shaft 51, thereby fixing the stop member 53 relative to the guide shaft 51 by the screw 52. The stop member 53 limits the movement of the cylindrical portion 50g, i.e., the opposing portion 50, in the +Z direction. That is, the stop member 53 is a part that abuts against the upper end of the cylindrical portion 50g, and it is a movement-limiting part that limits the movement of the opposing portion 50 toward the traveling head 40.

[0131] Although the illustration is omitted, the blocking member 53 forms a disc-shaped form when viewed from the Z-axis direction, and it has a covering portion 53a formed in a downward direction from the outer periphery.

[0132] The upper end of the cylindrical portion 50g is covered by the covering portion 53a.

[0133] in addition, Figure 11 The diagram on the left shows the state when the line header 40 is separated from the opposing part 50. Figure 11 The diagram on the right shows the state where the line head 40 is pressed down on the opposing part 50.

[0134] like Figure 3 , Figure 7 As shown, the support structure 55 described above is provided at both ends of the opposing portion 50 in the medium width direction, and is provided at both ends of the opposing portion 50 in a manner that is spaced apart in the Y-axis direction.

[0135] Furthermore, the two support structures 55 located at the +X direction end in the medium width direction are positioned identically in the X-axis direction, while the two support structures 55 located at the -X direction end are slightly offset in the X-axis direction. However, it is also possible for the two support structures 55 located at the -X direction end to be positioned identically in the X-axis direction.

[0136] Furthermore, although four support structures 55 are provided in this embodiment, it is not limited to this, and multiple structures are acceptable. However, by providing three support structures 55, the opposing portion 50 can be stably supported. As an example, when three support structures 55 are provided, it is preferable to provide two support structures 55 at one end and one support structure 55 at the other end in the medium width direction. In this case, it is preferable that one support structure 55 is provided between two support structures 55, particularly at the middle position, in the Y-axis direction.

[0137] Next, Figure 10 This indicates the state change as the line header 40 moves from the recording position to the cover position. Additionally, Figure 10 The various structures are illustrated schematically.

[0138] Figure 10 The leftmost diagram shows the state of the line head 40 in the recording position. As the line head 40 descends to move from this state to the cover position, a portion of the line head 40 will... Figure 10 As shown in the diagram at the center, it abuts against the opposing part 50.

[0139] Furthermore, as the sliding head 40 descends further, it overcomes the pressing force of the pressing spring 54 and presses down the opposing part 50. Moreover, when like by... Figure 10 As shown in the rightmost figure, when the head 40 moves toward the cover position, the cover 61 comes into contact with the head surface 42a, thereby covering the nozzle 44.

[0140] When the power is off and in recording standby mode, the line head 40 is positioned at the cover position.

[0141] exist Figure 6 In this embodiment, the symbol 41a represents the first contact portion, which is the part where the line head 40 abuts against the opposing portion 50. In this embodiment, the first contact portion 41a is provided at both ends of the line head 40 in the media width direction.

[0142] Figure 9The first abutting portion 41a, located at the end in the -X direction, abuts against the opposing portion 50. As shown in the figure, the first abutting portion 41a abuts against the opposing portion 50 between two support structures 55 spaced apart in the Y-axis direction. Therefore, the distance between the first abutting portion 41a and the support structure 55 does not become excessive, thereby allowing the cylindrical portion 50g to abut against the opposing portion 50. Figure 11 The guide shaft 51 shown moves smoothly.

[0143] In addition, Figure 9 In this embodiment, d1 represents the distance from the upstream support structure 55 to the opposing portion 50, and d2 represents the distance from the downstream support structure 55 to the opposing portion 50. In this embodiment, the two distances d1 and d2 are equal, meaning the first abutting portion 41a abuts against the opposing portion 50 at the midpoint between the two support structures 55. Although the figures are omitted, the first abutting portion 41a and the two support structures 55 located at their ends in the +X direction are also configured in the same way.

[0144] However, it is not limited to this, and the distances d1 and d2 can also be different.

[0145] Furthermore, multiple, for example two, first abutment portions 41a may be provided between two support structures 55 that are spaced apart in the Y-axis direction. In this case, it is preferable that the two first abutment portions 41a are positioned symmetrically relative to the middle position of the two support structures 55 that are spaced apart in the Y-axis direction.

[0146] Next, Figure 12 This indicates the movement of the line head 40 when the head and face 42a are wiped by the wiper 36.

[0147] Figure 12 The upper part of the diagram shows the state in which the line head 40 is in the recording position. When the head surface 42a is wiped by the wiper 36 from this state, the line head 40 is moved from... Figure 12 The wiper rises to the wiping position as shown in the change from the upper side to the lower side. This creates a gap between the wiper carriage 35 and the opposing part 50, and allows the wiper 36 to come into contact with the head surface 42a.

[0148] By moving the wiper carriage 35 in this state as indicated by the arrow marker Wm, the wiper 36 wipes the head face 42a.

[0149] Additionally, when the wiper 36 has moved to the -X direction end, i.e., when the wiper 36 has wiped the head surface 42a, the wiper carriage 35 moves in the +X direction to return to its initial position at the +X direction end. Alternatively, the print head 40 can be slightly raised before this action to prevent the wiper 36 from contacting the head surface 42a.

[0150] As explained above, the line head 40 can move in a forward and backward direction relative to the opposing part 50 by the power of the head movement motor 81. The moving area of ​​the line head 40 includes a recording position relative to the medium and a cover position where the head surface 42a is covered by the cover part 61.

[0151] Therefore, there is no need for a drive source to drive the cover 61, thereby suppressing the increase in size and cost of the device.

[0152] The printing head 40 has a first abutting part 41a that abuts against the opposing part 50. The opposing part 50 can be displaced along the moving direction of the printing head 40 and is pressed toward the printing head 40 by a pressing spring 54. The printing head 40 abuts against the opposing part 50 during the process of moving from the recording position to the cover position and moves the opposing part 50 by overcoming the pressing force applied by the pressing spring 54.

[0153] In this case, when the opposing portion 50 is used as a support unit to support the medium, if the opening 50a formed on the opposing portion 50 is large, the medium may enter the opening 50a. Therefore, it is preferable to minimize the opening 50a. However, if the opening 50a is reduced, the opposing portion 50 and the sliding head 40 will interfere when the cover 61 covers the head surface 42a, resulting in the problem that the head surface 42a cannot be covered by the cover 61.

[0154] Therefore, in this configuration, the opposing portion 50 is displaced along the moving direction of the printing head 40 and pressed towards the printing head 40 by the pressing spring 54. Furthermore, the printing head 40 is configured such that it abuts against the opposing portion 50 as it moves from the recording position to the cover position, and moves the opposing portion 50 by overcoming the pressing force applied by the pressing spring 54. As a result, the opening 50a can be reduced without the opposing portion 50 becoming an obstruction when the cover 61 covers the head surface 42a, thereby suppressing the possibility of media entering the opening 50a when the opposing portion 50 is used as a support unit.

[0155] Furthermore, the line head 40 includes multiple head chips 43 with ink ejection nozzles 44, which are alternately arranged in upstream and downstream positions along the media width direction, which intersects the media transport direction. The opening 50a is formed in a manner corresponding to the arrangement of the multiple head chips 43, and alternately opens in upstream and downstream positions along the media width direction. The opposing portion 50 has a first support portion 50c and a second support portion 50d between adjacent head chips 43 in the media width direction, serving as supports for the media. This allows for proper support of the media, thereby suppressing media entry into the opening 50a.

[0156] Furthermore, although in this embodiment the first support portion 50c and the second support portion 50d do not overlap in the medium transport direction, they can also be configured to overlap. This can appropriately suppress the entry of the medium into the opening 50a.

[0157] Furthermore, the support portion disposed between two adjacent head chips 43 in the media width direction has a first support portion 50c extending downstream from upstream in the media transport direction and a second support portion 50d extending upstream from downstream in the media transport direction. This allows for more appropriate support of the media, thereby further suppressing the entry of the media into the opening 50a.

[0158] Furthermore, in the first support portion 50c, the downstream corner in the medium conveying direction is formed as a chamfered portion 50e, and in the second support portion 50d, the upstream corner in the medium conveying direction is formed as a chamfered portion 50f. This prevents the top end of the medium from getting stuck on the second support portion 50d when the medium is conveyed from upstream to downstream in the medium conveying direction, and also prevents the top end of the medium from getting stuck on the first support portion 50c when the medium is conveyed from downstream to upstream in the medium conveying direction.

[0159] Furthermore, the printer 1 includes: a guide shaft 51, which is a shaft extending in the moving direction of the line head 40 and guiding the opposing portion 50 in the moving direction; a cylindrical portion 50g, which is disposed on the opposing portion 50 and guided by the guide shaft 51 through which the guide shaft 51 is inserted; and a blocking member 53, which is a portion for the upper end of the cylindrical portion 50g to abut against, and which is a movement limiting portion that defines the movement limit of the opposing portion 50 in the direction toward the line head 40. Moreover, a pressing spring 54 is configured to press the cylindrical portion 50g toward the blocking member 53.

[0160] With this structure, the cylindrical portion 50g is held in place by the compression spring 54 and the blocking member 53. As a result, it is possible to suppress the bending of the opposing portion 50 due to the pressing force applied by the compression spring 54.

[0161] Furthermore, the blocking member 53 has a covering portion 53a that covers the periphery of the upper end of the cylindrical portion 50g. This provides the following effects.

[0162] That is, when a foreign object enters between the upper end of the cylindrical portion 50g and the blocking member 53, the impression plate gap, which serves as the gap between the line head 40 and the opposing portion 50, will become disordered, which may negatively affect the recording quality. However, since the blocking member 53 has a covering portion that covers the area around the upper end of the cylindrical portion 50g, the entry of foreign objects between the upper end of the cylindrical portion 50g and the blocking member 53 can be suppressed, thereby properly maintaining the impression plate gap.

[0163] Furthermore, the opposing portion 50 extends along the media width direction, which intersects the media conveying direction, and the cylindrical portion 50g is provided at two locations at both ends of the opposing portion 50 in the media width direction, spaced apart from each other in the media conveying direction. Moreover, the sliding head 40 abuts against the opposing portion 50 between the cylindrical portions 50g provided at the two locations, spaced apart from each other in the media conveying direction. This prevents the opposing portion 50 from bending along the media width direction when the sliding head 40 presses down on it.

[0164] Next, the structure will be described in the case where a driven roller 71, as an example of a contact member, is provided between the first conveyor roller pair 15 and the second conveyor roller pair 19. The driven roller 71 may also be provided between the first conveyor roller pair 15 and the second conveyor roller pair 19.

[0165] like Figure 13 As shown, a driven roller 71 is provided in the medium conveying direction and between the first conveying roller pair 15 and the second conveying roller pair 19. In this embodiment, the driven roller 71 is a toothed roller with teeth along its outer periphery.

[0166] The driven roller 71 is positioned overlapping the traveling head 40 in the media conveying direction. In this embodiment, the driven roller 71 is positioned at both upstream and downstream locations in the media conveying direction.

[0167] like Figure 14 , Figure 15 , Figure 16As shown, the driven roller 71 is supported by a roller support frame 70, which is an example of a frame. The roller support frame 70 is formed in a frame shape with an opening 70a, which supports the driven roller 71 on the inside of the opening 70a.

[0168] Figure 17 for Figure 16 The enlarged view of part A shows that the driven roller 71 is configured such that a wheel 73 is provided on the main body 72. The wheel 73 is formed of metal material as an example, and it has a plurality of teeth 73a formed along its outer periphery.

[0169] A shaft hole 72a is formed in the main body 72, and a shaft portion 71a is inserted through the shaft hole 72a, allowing the main body 72 to rotate relative to the shaft portion 71a. The roller support frame 70 has a shaft support portion 70b, on which the shaft portion 71a is supported. Although in this embodiment the shaft portion 71a is engaged with the shaft support portion 70b by a snap-fit ​​method, it can be supported by any method.

[0170] As an example, the shaft portion 71a can be formed from a bar spring, in which case the driven roller 71 can be displaced in the Z-axis direction within the range of deformation of the shaft portion 71a. However, the shaft portion 71a can also be formed from a metal shaft or a resin shaft, etc.

[0171] like Figure 16 As shown, the driven roller 71 enters the area of ​​the line head 40 when the head surface 42a is viewed in a planar manner from the -Z direction.

[0172] Specifically, as described above, an upstream cutout 42b and a downstream cutout 42c are formed on the periphery of the plate member 42 that forms the head surface 42a. The driven roller 71 enters each cutout when the head surface 42a is viewed in plan view.

[0173] In addition, such as Figure 13 As shown, the driven roller 71 enters the recess 41b formed on the base 41 of the traveling head 40 in the Z-axis direction. Furthermore, the lower end of the driven roller 71 protrudes in the -Z direction compared to the head surface 42a. Figure 13 In this context, the symbol Hg represents the amount of protrusion of the driven roller 71 in the -Z direction compared to the head surface 42a. As an example, this protrusion Hg can be set to be greater than 0 mm and less than 5.0 mm.

[0174] In addition, although in this embodiment a portion of the driven roller 71 enters the upstream cutout 42b and the downstream cutout 42c when the head surface 42a is viewed in a plane, it is also possible for the entire driven roller 71 to enter the upstream cutout 42b and the downstream cutout 42c.

[0175] Furthermore, although in this embodiment the driven roller 71 is disposed at an upstream position and a downstream position relative to the traveling head 40, it may also be disposed at either the upstream position or the downstream position.

[0176] Furthermore, in this embodiment, such as Figure 14 , Figure 15 , Figure 16 As shown, multiple driven rollers 71 are provided along the width direction of the medium.

[0177] More specifically, in this embodiment, the driven roller 71 located upstream in the media transport direction is positioned between two adjacent head chips 43 in the media width direction. Furthermore, in this embodiment, the driven roller 71 located downstream in the media transport direction is positioned between two adjacent head chips 43 in the media width direction, and is positioned on the outer side relative to the head chip 43 located at the far end.

[0178] Next, the roller support frame 70 is supported at both ends in the media width direction by the main frame 7 that constitutes the base of the printer 1. In this embodiment, the structure supporting the roller support frame 70 is the same as the structure supporting the opposing portion 50.

[0179] Figure 19 This indicates a support structure 78 that supports the roller support frame 70. The support structure 78 includes a guide shaft 74, a cylindrical portion 70g, a blocking member 76, a screw 75, and a pressing spring 77.

[0180] More specifically, a guide shaft 74 is provided on the main frame 7. A cylindrical portion 70g is formed on the roller support frame 70, and the guide shaft 74 enters the cylindrical portion 70g. Thus, the cylindrical portion 70g, i.e., the roller support frame 70, is provided in a manner that allows for displacement in the Z-axis direction.

[0181] A pressing spring 77, which serves as an example of a pressing component, is provided on the guide shaft 74, and the roller support frame 70 is pressed in the +Z direction by the pressing spring 77.

[0182] The upper end of the guide shaft 74 is configured as a screw hole, which allows the screw 75 to be engaged. A stop 76 is inserted between the screw 75 and the upper end of the guide shaft 74, thereby fixing the stop 76 relative to the guide shaft 74 by the screw 75. The stop 76 defines the movement limit of the cylindrical portion 70g, i.e., the roller support frame 70, in the +Z direction. That is, the stop 76 is a part that abuts against the upper end of the cylindrical portion 70g, and it is a movement defining part that defines the movement limit of the roller support frame 70 in the direction toward the traveling head 40.

[0183] Although the illustration is omitted, the blocking member 76 forms a disc-shaped form when viewed from the Z-axis direction, and it has a covering portion 76a formed in a downward direction from the outer periphery.

[0184] The upper end of the cylindrical portion 70g is covered by the covering portion 76a.

[0185] in addition, Figure 19 The diagram on the left shows the state when the row head 40 is separated from the roller support frame 70. Figure 19 The diagram on the right shows the state in which the line head 40 presses down the roller support frame 70.

[0186] like Figure 15 As shown, the support structure 78 described above is provided at both ends of the roller support frame 70 in the medium width direction, and is provided at both ends of the roller support frame 70 in a manner that is spaced apart in the Y-axis direction.

[0187] In addition, the two support structures 78 located at the +X direction end in the medium width direction are at the same position in the X-axis direction, and the two support structures 78 located at the -X direction end are also at the same position in the X-axis direction.

[0188] Furthermore, although four support structures 78 are provided in this embodiment, it is not limited to this, and multiple structures are acceptable. However, by providing three support structures 78, the roller support frame 70 can be stably supported. When three support structures 78 are provided, as an example, it is preferable to provide two support structures 78 at one end and one support structure 78 at the other end in the medium width direction. Furthermore, in this case, it is preferable that one support structure 78 is provided in the Y-axis direction between two support structures 78, particularly at the middle position.

[0189] like Figure 6 , Figure 9 , Figure 18 As shown, second abutment portions 41c are provided at both ends of the cross-head 40 in the media width direction, spaced apart along the media conveying direction. Figure 18 As shown, the second abutment portion 41c is the part that abuts against the roller support frame 70. The opening 70a formed on the roller support frame 70 is formed such that its dimension in the medium conveying direction is larger than that of the swivel head 40, and its dimension in the medium width direction is smaller than the formation interval of the second abutment portion 41c in the medium width direction. As a result, the lower side of the swivel head 40 protrudes downward compared to the opening 70a, and the second abutment portion 41c can abut against the roller support frame 70.

[0190] When the print head 40 is in the recording position, the second abutment portion 41c separates from the roller support frame 70 by a certain amount. Furthermore, as the print head 40 descends from the recording position toward the cover position, the second abutment portion 41c comes into contact with the roller support frame 70. When the print head 40 is further descended after the second abutment portion 41c has contacted the roller support frame 70, the print head 40 overcomes the pressing force of the pressing spring 77 and presses down the roller support frame 70. This series of actions of the roller support frame 70 is the same as that of the opposing portion 50 described above.

[0191] The second abutting portion 41c abuts against the roller support frame 70 between two support structures 78 spaced apart in the Y-axis direction. This prevents the distance between the first abutting portion 41a and the support structure 55 from becoming excessive, thereby allowing the cylindrical portion 50g to abut against the roller support frame 70. Figure 11 The guide shaft 51 shown moves smoothly.

[0192] Furthermore, although in this embodiment two second abutment portions 41c are provided at the ends in the X-axis direction, spaced apart along the Y-axis direction, this is not a limitation, and one or more may be provided. When one second abutment portion 41c is provided at the ends in the X-axis direction, it is preferable to press the roller support frame 70 at the midpoint between the two support structures 78 spaced apart in the Y-axis direction. Furthermore, when two second abutment portions 41c are provided at the ends in the X-axis direction, spaced apart along the Y-axis direction, as in this embodiment, it is preferable to position the two second abutment portions 41c symmetrically relative to the midpoint of the two support structures 78.

[0193] Furthermore, the timing at which the sliding head 40 begins pressing the roller support frame 70 can be the same as or different from the timing at which it begins pressing the opposing part 50. However, it is preferable that the timing of the sliding head 40 starting to press the roller support frame 70 is different, as this can reduce the temporary load on the head moving motor 81 that raises and lowers the sliding head 40.

[0194] Next, Figure 20 This indicates the movement of the line head 40 when the head and face 42a are wiped by the wiper 36. Figure 20 The upper part of the diagram shows the state in which the line head 40 is in the recording position. When the head surface 42a is wiped by the wiper 36 from this state, the line head 40 is moved from... Figure 20 The image on the upper side changes as shown in the image on the lower side, rising until it reaches the wiping position.

[0195] At this time, since the roller support frame 70 and the traveling head 40 are separately constructed, the roller support frame 70 maintains its position in the Z-axis direction, while only the traveling head 40 rises. This creates a gap between the roller support frame 70 and the traveling head 40 for the wiper 36 to enter. This also creates a gap between the traveling head 40 and the roller support frame 70 for the wiper carriage 35 to enter, allowing the wiper 36 to come into contact with the head surface 42a. Furthermore, by moving the wiper carriage 35 in this state as indicated by the arrow Wm, the head surface 42a can be wiped by the wiper 36.

[0196] Furthermore, in this state, interference between the wiper 36 and the driven roller 71 can be avoided when the wiper 36 wipes the head surface 42a.

[0197] As explained above, the row head 40 has a plurality of head chips 43 with nozzles 44 on the plate member 42 opposite to the opposing part 50. An upstream cutout 42b and a downstream cutout 42c are formed on the periphery of the plate member 42, avoiding the head chips 43. Furthermore, a driven roller 71 capable of contacting the medium and rotating passively is disposed at the upstream cutout 42b and the downstream cutout 42c. This facilitates the suppression of medium warping in the area of ​​the plate member 42 by means of the driven roller 71, thereby more effectively suppressing head friction of the medium.

[0198] Furthermore, multiple head chips 43 are alternately arranged in upstream and downstream positions along the media width direction, which is the direction intersecting the media transport direction, and the upstream cutout 42b and the downstream cutout 42c enter between two adjacent head chips 43 in the media width direction.

[0199] With this structure, the driven roller 71 can be positioned closer to the head chip 43, thereby more effectively suppressing the head friction of the medium.

[0200] Furthermore, the driven roller 71 is one example of a contact member capable of contacting the medium, but the contact member is not limited to the driven roller 71. Any member capable of suppressing the lifting of the medium by contacting it is acceptable. For example, the contact member can also be a non-rotating member. In the case of a non-rotating member, its shape can be a disc-shaped member like a roller, a rib-shaped member, or other shapes. The protrusion amount Hg of at least a portion of the contact member (refer to...) Figure 13 Preferably, the protrusion amount Hg is greater than 0 mm. Specifically, the protrusion amount Hg can be set to be greater than 0 mm and less than 5.0 mm.

[0201] However, if the contact component is made to be a component that can rotate passively in contact with the medium, damage such as scratches on the medium can be suppressed when the medium comes into contact with the contact component.

[0202] Furthermore, in this embodiment, a portion of the driven roller 71 enters between two adjacent head chips 43 in the width direction of the medium. This further and more effectively suppresses head friction of the medium.

[0203] Furthermore, since the driven roller 71 and the cutout for arranging it are provided on the plate member 42 upstream and downstream in the medium conveying direction, the head friction of the medium can be further suppressed more effectively.

[0204] Furthermore, since multiple upstream cutouts 42b and downstream cutouts 42c, as well as driven roller 71, are provided along the width of the medium, head friction of the medium can be suppressed in a wide area along the width of the medium.

[0205] Furthermore, the driven roller 71 is supported by a roller support frame 70, which is a frame located between the line head 40 and the opposing portion 50 in the direction of movement of the line head 40, and is provided independently of the line head 40. Moreover, by moving the line head 40 from the recording position to the wiping position, a gap is formed between the roller support frame 70 and the line head 40 for the wiper 36 to enter.

[0206] Therefore, when the head surface 42a is wiped by the wiper 36, the driven roller 71 is positioned at the point where it separates from the head surface 42a. Thus, it is possible to configure the driven roller 71 so that it does not interfere with the wiper 36 when the head surface 42a is wiped by the wiper 36.

[0207] Furthermore, the roller support frame 70 is displaceable along the moving direction of the printing head 40 and is pressed towards the printing head 40 by the pressing spring 77. As the printing head 40 moves from the recording position to the cover position, it abuts against the roller support frame 70 and moves against the pressing force applied by the pressing spring 77. With this structure, it is possible to suppress the situation where the roller support frame 70 obstructs the movement of the printing head 40 as it moves towards the cover position.

[0208] Alternatively, the driven roller 71 described above can be replaced by the protruding member 91, which will be described later, as a unit for suppressing head friction of the medium. Hereinafter, the structure with the protruding member 91 will be described.

[0209] like Figure 22As shown, a protruding member 91 is provided in the media conveying direction and between the first conveying roller pair 15 and the second conveying roller pair 19. The protruding member 91 is positioned in the media conveying direction at a position overlapping with the linear head 40A.

[0210] In this embodiment, the protruding member 91 is a rib-shaped member that protrudes from the plate member 42 toward the opposing portion 50. The protruding member 91 can be formed of a resin material, and as an example, it can be formed of POM (polyoxymethylene).

[0211] The protruding part 91 can be fixed to the exposed portion (not shown) of the base 41 that exposes part of the plate part 42, or the head chip 43, or the base of the substrate constituting the row head 40A by means of fixing units such as adhesive, fusion, or pressing.

[0212] like Figure 21 , Figure 23 As shown, when the head surface 42a is viewed in plan view from the -Z direction, the protruding member 91 enters the area of ​​the horizontal head 40A. Furthermore, in this embodiment, the cover portion 61 is shaped to avoid interference with the protruding member 91.

[0213] The protruding member 91 is configured to avoid the nozzle 44. Furthermore, in this embodiment, the protruding member 91 is provided to connect to the ends of the two head chips 43. For example, the -X direction is designated as the first direction, and the +X direction as the second direction. Figure 23 The protruding member 91-1 is configured to connect the -X-direction end of the head chip 43-1 located upstream and the +X-direction end of the head chip 43-2 located downstream in the media transport direction relative to the -X-direction end. Of course, the configuration of the protruding member 91 can also be understood as the opposite of the above, with the +X-direction as the first direction and the -X-direction as the second direction.

[0214] In this embodiment, such as Figure 21 , Figure 24 As shown, a protruding member 91 is provided at the end of all the head chips 43. In addition, only one end of the protruding member 91 provided at both ends in the width direction of the medium is provided at the end of the head chip 43.

[0215] In this embodiment, the protruding member 91 completely covers the area where the nozzle 44 is disposed in the medium conveying direction.

[0216] exist Figure 24 In this context, the symbol CL represents the center position of the medium along its width. Regardless of its dimensions, the center position of the medium along its width is always referred to as the center position CL.

[0217] As shown in the figure, the head chip 43 is configured to be symmetrical about the center position CL in the direction of the medium width. Similarly, the protruding part 91 is also configured to be symmetrical about the center position CL in the direction of the medium width.

[0218] exist Figure 24 In the designation, symbol 91A represents a first protruding member extending downstream from the center position CL in the width direction of the medium in the -Y direction. Furthermore, symbol 91B represents a second protruding member extending downstream from the center position CL in the width direction of the medium in the -Y direction.

[0219] Multiple protruding parts 91 are arranged alternately with the second protruding part 91B and the first protruding part 91A from the center position CL toward the side of the medium, and the outermost part in the width direction of the medium becomes the first protruding part 91A.

[0220] exist Figure 22 In the figure, the symbol Hg represents the amount of protrusion of the protruding part 91 in the -Z direction compared to the head surface 42a. As an example, this amount of protrusion Hg can be set to be greater than 0 mm and less than 5.0 mm.

[0221] In the medium transport direction, a chamfered portion 91a is formed at the corner of the upstream end of the protruding member 91. Furthermore, in the medium transport direction, a chamfered portion 91b is formed at the corner of the downstream end of the protruding member 91.

[0222] Alternatively, the chamfered portions 91a and 91b can be replaced by a chamfered shape to form an R-angle shape.

[0223] As explained above, the plate member 42 is provided with a head chip 43 having a nozzle 44 and a protruding member 91. The protruding member 91 is a rib-shaped member configured to avoid the nozzle 44 provided on the head chip 43, and it protrudes from the plate member 42 toward the opposing portion 50. Therefore, it is easy to achieve the effect of suppressing the warping of the medium by means of the protruding member 91 in the area of ​​the plate member 42, thereby more effectively suppressing the head friction of the medium.

[0224] Furthermore, the protruding member 91 extends in a direction intersecting the media conveying direction. Therefore, the head friction suppression effect provided by a single protruding member 91 can be obtained over a wide range in the direction intersecting the media conveying direction. As a result, since head friction of the media can be effectively suppressed and the number of protruding members 91 can be reduced, the increase in device cost can be prevented.

[0225] Furthermore, in this embodiment, the head chip 43 extends in the media width direction, which is orthogonal to the media transport direction, and a plurality of head chips 43 are alternately arranged at upstream and downstream positions along the media width direction. Moreover, the protruding member 91 is provided in such a way as to connect the end of the head chip 43 arranged in the upstream position in a first direction and the end of the head chip 43 located in the downstream direction of the media transport direction relative to the end in the first direction.

[0226] Therefore, the protruding part 91 can cover a wide range of the medium conveying direction in the area where it avoids the nozzle 44, thereby further suppressing the head friction of the medium more effectively.

[0227] Furthermore, since the corner of the upstream end of the protruding member 91 in the medium conveying direction is formed into a chamfered shape or an R-angle shape, it is possible to suppress the situation where the top of the medium gets stuck on the protruding member 91 when the medium is conveyed from upstream to downstream in the medium conveying direction.

[0228] Furthermore, since the corner of the downstream end of the protruding member 91 in the medium conveying direction is formed into a chamfered shape or an R-angle shape, it is possible to suppress the situation where the top of the medium gets stuck on the protruding member 91 when the medium is conveyed from the downstream to the upstream in the medium conveying direction.

[0229] In addition, as referenced Figure 24 As described, the plurality of protruding parts 91 include a first protruding part 91A and a second protruding part 91B. The first protruding part 91A extends toward the side end of the medium from the center position CL in the medium width direction, i.e., from upstream in the medium conveying direction toward downstream. The second protruding part 91B extends toward the center position CL from the side end of the medium in the medium width direction, i.e., from upstream in the medium conveying direction toward downstream.

[0230] exist Figure 24 In this context, symbol P1 represents the first medium, which, as an example, is an A4-sized sheet of paper with its short side aligned with the width of the medium. Furthermore, symbol P2 represents the second medium, which, as an example, is an A6-sized sheet of paper with its short side aligned with the width of the medium.

[0231] The side end of such a predetermined specification size medium in the width direction will pass through a position deviated from the second protruding part 91B.

[0232] This achieves the following effect: When the side end of the medium passes the position of the second protruding member 91B in the width direction of the medium, the corner of the top of the medium is easily caught on the second protruding member 91B, thus easily causing a paper jam. In contrast, even if the corner of the top of the medium is caught on the first protruding member 91A, the corner will be guided outward, thus making it less likely to cause a paper jam.

[0233] Furthermore, as described above, since the side end of the medium of the predetermined size will pass through a position deviated from the second protruding member 91B in the medium width direction, the occurrence of the aforementioned paper jam can be suppressed.

[0234] Depending on the amount of protrusion from the head surface 42a or the hardness of the wiper 36, the aforementioned protruding part 91 may sometimes become an obstacle to wiping the head surface 42a by the wiper 36.

[0235] Therefore, the protruding part 91 can be set independently from the wiping head 40 and configured to separate from the head surface 42a when the wiping head 40 moves to the wiping position.

[0236] Figure 25 , Figure 26 This structure is shown. Figure 25 This indicates the state of line header 40 at the record position. Figure 26 This indicates the state of the line head 40 in the wiping position.

[0237] In this embodiment, the protruding member 91 is provided on the support member 95. The support member 95 is positioned such that, when the line head 40 is in the recording position... Figure 27 As shown, it is shaped to surround the plate member 42, and is disposed independently of the row head 40 on the main frame 7. Similarly, the protruding member 91 is disposed independently of the row head 40, just like the support member 95.

[0238] Since the support member 95 and the protruding member 91 are provided independently of the sliding head 40, when from Figure 25 Starting point Figure 26 As the change is shown, when the line head 40 moves from the recording position to the wiping position, the head surface 42a separates from the protruding member 91. This creates a gap between the head surface 42a, the support member 95, and the protruding member 91, allowing the wiping device 36 to wipe the head surface 42a without being affected by the protruding member 91.

[0239] Furthermore, in this embodiment, the protruding member 91 becomes an obstacle when the print head 40 moves from the recording position to the cover position. Therefore, similar to the opposing part 50 described above, the support member 95 can be provided in a way that allows it to move in the forward and backward direction relative to the print head 40, and can be pressed towards the print head 40 by a pressing member (not shown). In this case, the upper limit position of the support member 95 is limited by a limiting part (not shown) that abuts against the support member 95.

[0240] According to this structure, when the line head 40 moves from the recording position to the cover position, the protruding member 91, i.e. the support member 95, can be pressed down by the line head 40, resulting in the line head 40 being able to move from the recording position to the cover position.

[0241] Alternatively, an edge detection unit 38 may be provided on the wiper carriage 35 described above. The structure with the edge detection unit 38 provided will be described below.

[0242] like Figure 28 As shown, an edge detection section 38 for detecting the edge of the medium is provided at the bottom of the wiper carriage 35.

[0243] Edge detection unit 38 and control unit 80 (see reference) Figure 5 They are connected together by a flexible flat cable (not shown). The flexible flat cable deforms as it follows the movement of the wiper carriage 35.

[0244] The edge detection unit 38 is an optical sensor, which includes a light-emitting unit (not shown) that emits detection light toward the opposing unit 50, and a light-receiving unit (not shown) that receives the reflected component of the detection light. The intensity of the reflected component is stronger when the detection light is emitted relative to the medium than when the detection light is emitted relative to the opposing unit 50. Therefore, the control unit 80 can detect the edge of the medium based on the detection information from the edge detection unit 38.

[0245] For reference Figure 12 or Figure 20 As explained, the wiper carriage 35 is movable in the width direction of the medium. Since the edge detection unit 38 is provided on the wiper carriage 35, by moving the wiper carriage 35 in the width direction while positioning the medium at a position where it can be detected by the edge detection unit 38, edge detection implemented by the edge detection unit 38 can be performed. Furthermore, edge detection here refers to detecting either or both of the edges in the +X direction and the -X direction of the medium.

[0246] exist Figure 35In the figure, symbol Ps1 represents the edge of medium P in the +X direction, and symbol Ps2 represents the edge of medium P in the -X direction. Furthermore, line SL1 is the detection line generated by the edge detection unit 38. As shown, by positioning the medium P at a position where it can be detected by the edge detection unit 38, and moving the wiper carriage 35 in the direction of the arrow (-X direction) as an example, the positions of edges Ps1 and Ps2 can be detected. Additionally, as mentioned above, an encoder sensor (not shown) is provided on the wiper drive motor 31. Since the control unit 80 can grasp the current position of the wiper carriage 35, the positions of edges Ps1 and Ps2 in the width direction of the medium can be detected.

[0247] However, by conveying the medium at a position where the edge detection unit 38 in the medium width direction can detect the medium, for example, at the center position in the medium width direction, it is also possible to detect the edge in the -Y direction, i.e. the top edge, and the edge in the +Y direction, i.e. the rear edge, of the medium.

[0248] When edge detection of the medium is performed using the edge detection unit 38, the line head 40 can move in the +Z direction from the recording position after the medium is conveyed to a position that can face the edge detection unit 38, or it can move in the +Z direction from the recording position before the medium is conveyed to a position that can face the edge detection unit 38. However, by moving the line head 40 from the recording position to the wiping position or the separation position (described later) before the medium is conveyed to a position that can face the edge detection unit 38, printing productivity can be improved. For example, by performing the conveying operation for conveying the medium to a position that can face the edge detection unit 38 and the above-described moving operation of the line head 40 in parallel, printing productivity can be improved.

[0249] Additionally, the moving area of ​​the line header 40 includes a recording position relative to the medium. Figure 29 (See the topmost diagram). Furthermore, within the moving area of ​​the line head 40, there is a wiping position, which is a position separated from the opposing portion 50 compared to the recording position, and is a position where the head surface 42a is wiped by the wiper 36. Figure 29 (The central diagram). Furthermore, the moving area of ​​the row head 40 includes a separation position, which is a position separated from the opposing portion 50 compared to the wiping position, and a position where the wiper 36 can move in the media width direction while separated from the head surface 42a. Figure 29 (The bottommost image).

[0250] As described above, the wiper 36 is mounted on a wiper carriage 35 that moves in the width direction of the medium under the power of the wiper drive motor 31. An edge detection unit 38 for detecting the edge of the medium is provided in the wiper carriage 35 at a position opposite to the opposing part 50. Therefore, a dedicated structure for moving the edge detection unit 38 in the width direction of the medium is eliminated, thereby reducing the need for large-scale installation and increased cost.

[0251] Furthermore, the control unit 80, which controls the wiper drive motor 31 and the head movement motor 81, can drive the wiper drive motor 31 and perform edge detection using the edge detection unit 38 while the horizontal head 40 is positioned in the wiping position. Hereinafter, this will be referred to as the first edge detection mode.

[0252] According to the first edge detection mode, since wiping of the head surface 42a by the wiper 36 and edge detection by the edge detection unit 38 can be performed simultaneously, the recording productivity can be improved.

[0253] Furthermore, the control unit 80 can drive the wiper drive motor 31 and perform edge detection using the edge detection unit 38 while the wiping head 40 is positioned in the separation position. Hereinafter, this will be referred to as the second edge detection mode.

[0254] According to the second edge detection mode, the load generated by the contact between the wiper 36 and the head 42a during edge detection will not act on the wiper drive motor 31, thereby enabling edge detection to be performed with good accuracy.

[0255] Furthermore, the control unit 80 can perform wiping of the head surface 42a by the wiper 36 without the need for edge detection. Hereinafter, this will be referred to as the wiping-only mode.

[0256] As an example, wiping of the head 42a by the wiper 36 can be performed both when the device is powered on and when it is powered off. In this case, the control unit 80 selects the wiping-only mode as an example.

[0257] Furthermore, the wiping of the head surface 42a by the wiping device 36 can be performed at a time when a predetermined time has elapsed since the last wiping of the head surface 42a, or at a time when the total number of printed sheets since the last wiping of the head surface 42a has reached a predetermined number. In this case, the control unit 80 selects the wiping-only mode as an example.

[0258] Furthermore, the control unit 80 can also perform edge detection on the initial medium when a recording task is first performed after the device is powered on. For example, the control unit 80 can also perform edge detection on the initial medium whenever a recording task is performed, provided that the specified recording quality is "normal". In this case, the control unit 80 can implement either a first edge detection mode or a second edge detection mode.

[0259] Furthermore, the control unit 80 can also perform edge detection on the initial medium of each recording task whenever a recording task is performed. For example, the control unit 80 can also perform edge detection on the initial medium whenever a recording task is performed when the specified recording quality is "high detail". In this case, the control unit 80 can also implement either the first edge detection mode or the second edge detection mode.

[0260] Furthermore, the control unit 80 can also perform edge detection on the initial media used for the initial recording task after the media storage box 2 has been inserted or removed. In this case, the control unit 80 can also implement either the first edge detection mode or the second edge detection mode.

[0261] If the size information of the medium contained in the printing data differs from the size information of the medium obtained by edge detection, the control unit 80 will stop the recording operation and display an alarm indicating this meaning on the display unit (not shown) of the printer 1 or on the display unit (not shown) of the computer connected to the printer 1.

[0262] Furthermore, with the printhead 40 in the separated position, the control unit 80 can also perform a rinsing action to eject ink from the nozzle 44 toward the wiper carriage 35. Specifically, the wiper carriage 35 is sized to face one printhead 43, and when the control unit 80 positions the wiper carriage 35 to face the printhead 43 near its initial position, ink is ejected only from the printhead 43 near its initial position. This localized rinsing action is performed sequentially for all printheads 43 while the wiper carriage 35 is moved in the -X direction.

[0263] By utilizing the wiping carriage 35 for rinsing in this way, the rinsing action can be performed without moving the sliding head 40 to a position close to the cover 61.

[0264] Next, the anti-rotation structure of the wiper carriage 35 will be explained.

[0265] Figure 30 This indicates the anti-rotation structure of the wiper carriage 35 according to this embodiment.

[0266] The wiper frame 30 has a first frame portion 30a forming a horizontal plane and a second frame portion 30b forming a vertical plane. The first frame portion 30a and the second frame portion 30b are extended together across the entire moving area of ​​the wiper carriage 35.

[0267] The wiper carriage 35 has a guide portion 35c that is shaped to clamp the second frame portion 30b. By clamping the second frame portion 30b with the guide portion 35c, the position of the wiper carriage 35 in the Y-axis direction is defined. Furthermore, the guide portion 35c is in contact with the upper surface of the first frame portion 30a, thereby supporting the wiper carriage 35 by the first frame portion 30a.

[0268] On the wiper carriage 35, due to its own weight, the wiper carriage 35 generates a force that causes it to move towards the guide portion 35c as the center. Figure 30 The counterclockwise rotational torque. An anti-rotation part 35d is formed on the wiper carriage 35. By contacting the anti-rotation part 35d with the lower surface of the first frame part 30a, the aforementioned rotation is stopped, thereby defining the posture of the wiper carriage 35.

[0269] The anti-rotation structure of the wiper carriage 35 described above can be like Figure 31 As shown, it deforms. For example, in Figure 31 On the wiper carriage 35A shown, an anti-rotation portion 35d is formed in such a way that it extends from the guided portion 35c in the +Y direction.

[0270] A rotation limiting part 30c is formed on the first frame portion 30a in the wiper frame 30A. The rotation limiting part 30c is extended across the entire moving area of ​​the wiper carriage 35.

[0271] The anti-rotation part 35d is configured to enter the lower side of the rotation restriction part 30c, thereby stopping the rotation of the wiper carriage 35A and thus defining the posture of the wiper carriage 35A.

[0272] In addition, the anti-rotation structure of the wiper carriage can be like Figure 32 As shown, it deforms. Figure 32 A sub-frame 23 is provided on the lower side of the -Y direction end of the wiper carriage 35B shown. The sub-frame 23 extends across the entire moving area of ​​the wiper carriage 35.

[0273] The subframe 23 supports the -Y direction end of the wiper carriage 35B from below. This stops the rotation of the wiper carriage 35B, thereby defining the orientation of the wiper carriage 35B.

[0274] In addition, the anti-rotation structure of the wiper carriage can be like Figure 33 As shown, it deforms. Figure 33 On the wiper carriage 35C shown, an anti-rotation portion 35d is formed in such a way that it extends from the guided portion 35c in the +Z direction.

[0275] A sub-frame 23 is provided at the upper part of the guided part 35C. The rotation of the wiper carriage 35C is stopped by pressing the anti-rotation part 35d against the sub-frame 23, thereby regulating the posture of the wiper carriage 35C.

[0276] In addition, the anti-rotation structure of the wiper carriage can be like Figure 34 As shown, it deforms. Figure 34 The wiper carriage 35D shown has a shaft insertion portion 35e, in which a guide shaft 24 is inserted. The guide shaft 24 extends across the entire moving area of ​​the wiper carriage 35D. The wiper carriage 35D is guided in the X-axis direction by the guide shaft 24.

[0277] A sub-frame 23 is provided at the upper part of the wiper carriage 35D. The rotation of the wiper carriage 35D is stopped by pressing the anti-rotation part 35d against the sub-frame 23, thereby regulating the posture of the wiper carriage 35D.

[0278] The present invention is not limited to the embodiments and variations described above, but various changes can be made within the scope of the invention as set forth in the claims, and these changes are obviously included within the scope of the present invention.

[0279] Symbol Explanation

[0280] 1…Inkjet printer; 2…Media collection box; 3…Pick-up roller; 5…Feed roller; 6…Separation roller; 7…Main frame; 8…Reversing roller; 9…First clamping roller; 10…Second clamping roller; 12…Media support; 13…Feed roller; 14…Separation roller; 15…First conveyor roller pair; 16…Drive roller; 17…Driven roller; 19…Second conveyor roller pair; 20…Drive roller; 21…Driven roller; 22…Media detection unit; 23…Sub-frame; 24…Guide shaft; 27…Third conveyor roller pair; 28…Discharge roller pair; 29…Discharge tray; 30, 30A…Wipe frame; 30a…First frame section; 3 0b…Second frame section; 30c…Rotation limiting section; 31…Wipe drive motor; 32…Seamless belt; 33…Drive pulley; 34…Driven pulley; 35, 35A, 35B, 35C, 35D…Wipe carriage; 35a…Matching hole; 35c…Guided section; 35d…Anti-rotation section; 35e…Shaft insertion section; 36…Wipe; 37…Ink recovery section; 37a…Suction section; 38…Edge detection section; 40…Rotating head; 41…Base; 41a…First abutment section; 41b…Recess; 41c…Second abutment section; 41d…Rack section; 42…Plate component; 42a…Head face; 42b…Upstream cut; 42c…Downstream cut; 42d…Opening; 43…Head chip; 44…Nozzle; 50…Opposing part; 50a…Opening; 50b…Support rib; 50c…First support part; 50d…Second support part; 50e, 50f…Chamfered part; 50g…Cylindrical part; 51…Guide shaft; 52…Screw; 53…Blocking element; 53a…Cover part; 54…Pressing spring; 55…Support structure; 60…Cover unit; 61…Cover part; 61a…Elastic part; 61b…Cover body part; 62…Base part; 63…Cover spring; 64…Waste liquid pipe; 70…Roller support frame ; 70a…Opening; 70b…Shaft support; 70c…Guided hole; 70g…Cylindrical part; 71…Driven roller; 71a…Shaft; 72…Main body; 73…Wheel; 73a…Gear; 74…Guide shaft; 75…Screw; 76…Blocking part; 76a…Covering part; 77…Pressing spring; 78…Support structure; 80…Control part; 81…Head moving motor; 82…Motor gear; 83, 84…Gear; 85…Pinary gear; 86…Shaft; 91…Protruding part; 91A…First protruding part; 91B…Second protruding part; 91a, 91b…Chamfered part; 95…Supporting part.

Claims

1. A recording device, characterized in that, have: A liquid ejector head records data by ejecting liquid relative to a medium. The opposing part is configured opposite to the liquid ejector head; The cover covers the liquid ejection surface of the liquid nozzle. An opening is formed in the opposing portion. The cover is disposed inside the opening and opposite the liquid ejection surface. The liquid nozzle can be moved forward and backward relative to the opposing part by means of a motor. The moving area of ​​the liquid ejector head includes a recording position relative to the medium and a cover position where the liquid ejection surface is covered by the cover. The liquid ejector head has an abutting portion that abuts against the opposing portion. The opposing portion can be displaced along the moving direction of the liquid nozzle, and is pressed toward the liquid nozzle by the pressing member. As the liquid nozzle moves from the recording position to the cap position, it abuts against the opposing portion via the abutting portion, and overcomes the pressing force applied by the pressing member to move the opposing portion. The recording device also includes: A guide shaft, which is an axis extending in the direction of movement of the liquid nozzle, guides the opposing part in the direction of movement. A cylindrical portion, which is a cylindrical portion provided at the opposing portion, and is guided by the guide shaft by inserting the guide shaft through it; The movable regulating part is a portion that abuts against the upper end of the cylindrical portion, and it regulates the movement limit of the opposing portion in the direction toward the liquid nozzle. The pressing component presses the cylindrical portion toward the moving predetermined portion. The opposing portion extends along the width direction of the medium, which is a direction intersecting the medium conveying direction. The cylindrical portion is disposed at two locations at both ends of the opposing portion in the medium width direction, spaced apart from each other in the medium conveying direction. The liquid nozzle abuts against the opposing portion between the cylindrical portions located at two points spaced apart in the direction of medium transport.

2. The recording device as claimed in claim 1, characterized in that, The liquid ejector head has multiple head chips, each head chip having a nozzle for ejecting liquid. The head chip is alternately arranged in upstream and downstream positions along the width direction of the medium, which intersects with the medium transport direction. The opening is formed in a manner corresponding to the configuration of the plurality of head chips, and in a manner that alternates between opening at upstream and downstream positions along the width direction of the medium. The opposing portion has a support portion that supports the medium between two adjacent head chips in the width direction of the medium.

3. The recording device as claimed in claim 2, characterized in that, The support portion has: A first support portion extends from upstream in the medium conveying direction toward downstream; The second support extends from downstream in the medium transport direction toward upstream.

4. The recording device as claimed in claim 3, characterized in that, In the first support portion, the corner at the downstream end in the medium conveying direction is formed into a chamfered shape or a rounded corner shape. In the second support portion, the corner at the upstream end in the medium conveying direction is formed into a chamfered shape or an R-angle shape.

5. The recording device as claimed in claim 1, characterized in that, The movable part includes a covering part that covers the area around the upper end of the cylindrical part.

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