JP2018099841A - Ink jet recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet recording device which can clean an ink discharge surface effectively while suppressing damage on a wiper member.SOLUTION: A recording device includes cleaning liquid supply ports 63, 64, and a groove part 65. The cleaning liquid supply ports 63, 64 supply a cleaning liquid used for cleaning an ink discharge area. The cleaning liquid supply ports 63, 64 are arranged in lines separating in a head width direction B on an upstream side of a wiping direction A1 than the ink discharge area and on a downstream side of the wiping direction A1 than a movement start position of the wiper member. The groove part 65 is formed in a linear shape extending in a head width direction B in the cleaning liquid supply area with the cleaning liquid supply ports 63,64 arranged, or on a downstream side of the wiping direction A1 than the cleaning liquid supply area and on an upstream side of the wiping direction A1 than the ink discharge area on arrays of the cleaning liquid supply ports 63, 64 or on a downstream side of the wiping direction A1 than the arrays of the cleaning liquid supply ports 63, 64.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an ink jet recording apparatus that ejects ink from a recording head onto a recording medium to record an image on the recording medium, and more particularly to an ink jet recording apparatus that can clean the ink ejection surface of the recording head.

  In general, an ink jet recording apparatus that records an image on a recording medium by ejecting ink from a nozzle of a recording head onto a recording medium such as paper is known. In this ink jet recording apparatus, when ink droplets are ejected from the nozzles, ink scattered around the nozzles or ink overflowing from the nozzles may adhere to the ink ejection surface. In this case, the ink adhering to the periphery of the nozzles may cause the ink ejection direction to deviate from the target direction, or the ink ejection amount may differ from the target amount, resulting in image recording failure.

  On the other hand, an ink jet recording apparatus is known in which an ink discharge surface of a recording head is wiped by a wiper member in order to clean ink adhering to the periphery of the nozzle. There is also known an ink jet recording apparatus in which a plurality of cleaning liquid supply ports are provided on the ink discharge surface, and wiping is performed by supplying the cleaning liquid from the plurality of cleaning liquid supply ports to the ink discharge surface (see, for example, Patent Document 1).

JP 2007-83396 A

  By the way, the plurality of cleaning liquid supply ports are arranged side by side in a direction substantially orthogonal to the wiping direction of the wiper member. Therefore, the cleaning liquid is supplied discretely to the wiper member, and the cleaning liquid partially exists in the wiper member. As a result, when the wiping is performed, the area where the cleaning liquid does not exist in the wiper member comes into contact with the ink discharge surface, so that the cleaning effect in the area where no cleaning liquid exists is reduced. On the other hand, it is also conceivable to perform a plurality of wiping operations in order to spread the cleaning liquid over the entire contact portion of the wiper member with the ink ejection surface. However, the area where the cleaning liquid does not exist in the wiper member is in a so-called empty wiping state until the cleaning liquid is spread over the entire contact portion. Therefore, performing the wiping operation a plurality of times causes damage to the wiper member. become.

  An object of the present invention is to provide an ink jet recording apparatus that can effectively clean an ink discharge surface while suppressing damage to a wiper member.

  An ink jet recording apparatus according to one aspect of the present invention includes an ink discharge nozzle from which ink is discharged, a wiper member, a plurality of supply ports, and a linear recess. The wiper member moves in a predetermined first direction in contact with a wiping surface having an ink discharge region provided with the ink discharge nozzle. The plurality of supply ports supply a cleaning liquid used for cleaning the ink discharge region. Further, the plurality of supply ports may be arranged on the upstream side in the first direction with respect to the ink ejection area on the wiping surface and on the downstream side in the first direction with respect to a predetermined movement start position of the wiper member. They are arranged side by side in rows that are spaced apart in a second direction that intersects the first direction. The linear recess is a cleaning liquid supply region provided with the plurality of supply ports on the wiping surface, or the downstream side in the first direction with respect to the cleaning liquid supply region on the wiping surface and the first portion than the ink discharge region. On the upstream side in one direction, it is formed in a linear shape extending in the second direction on the row of the plurality of supply ports or on the downstream side in the first direction with respect to the row of the plurality of supply ports.

  ADVANTAGE OF THE INVENTION According to this invention, the inkjet recording device which can wash | clean an ink discharge surface effectively can be provided, suppressing the damage to a wiper member.

FIG. 1 is a diagram showing the structure of an ink jet recording apparatus provided with a recording head according to an embodiment of the present invention. FIG. 2 is a view of the first transport unit and the recording unit of the ink jet recording apparatus shown in FIG. 1 as viewed from above. FIG. 3 is a diagram of a recording head constituting the line head of the recording unit. FIG. 4 is a view of the recording head as viewed from the ink ejection surface side. FIG. 5 is a view of the recording head and its peripheral portion as viewed obliquely from below. FIG. 6 is a view of the cleaning liquid supply member of the recording head as viewed obliquely from below. 7 is a cross-sectional view taken along the line VII-VII in FIG. FIG. 8 is a diagram of the recording head and its peripheral portion as viewed obliquely from above. FIG. 9 is a diagram illustrating a state in which the maintenance unit is disposed below the recording unit. FIG. 10 is a diagram illustrating a state in which the wiper member is disposed below the recording head. FIG. 11 is a view of the state in which the cleaning liquid is supplied from the cleaning liquid supply port as viewed obliquely from below. 12 is a view showing a state in which the wiper member is lifted from the state of FIG. 10 and is brought into pressure contact with the cleaning liquid supply member. FIG. 13 is a view showing a state where the wiper member is moved from the state of FIG. FIG. 14 is a view of the cleaning liquid supply member in the state of FIG. 13 as viewed obliquely from below. FIG. 15 is a diagram illustrating a state where the wiper member is slightly moved from the state of FIG. 13. FIG. 16 is a diagram showing a state where the wiper member is further moved from the state of FIG. FIG. 17 is a diagram illustrating a state where the wiper member is further moved from the state of FIG. 16 and then the wiper is lowered and separated from the ink ejection surface. FIG. 18 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 19 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 20 is a bottom view showing a modified example of the cleaning liquid supply member. FIG. 21 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 22 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 23 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 24 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 25 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 26 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 27 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 28 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 29 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 30 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 31 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 32 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 33 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 34 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 35 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 36 is a bottom view showing a modification of the cleaning liquid supply member. FIG. 37 is a bottom view showing a modification of the cleaning liquid supply member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, embodiment described below is only an example which actualized this invention, and does not limit the technical scope of this invention.

  As shown in FIG. 1, a paper feed tray 2 that accommodates a sheet S (recording medium) is provided on the left side of an inkjet recording apparatus 100 according to an embodiment of the present invention. A paper feed roller 3 and a driven roller 4 are provided at one end of the paper feed tray 2. The paper feed roller 3 transports and feeds the paper S stored in the paper feed tray 2 one by one from the uppermost paper S to a first transport unit 5 described later. The driven roller 4 rotates following the rotation of the paper feed roller 3.

  A first transport unit 5 and a recording unit 9 are disposed on the downstream side (the right side in FIG. 1) in the paper transport direction X with respect to the paper feed roller 3 and the driven roller 4. The first transport unit 5 includes a first drive roller 6, a first driven roller 7, and a first transport belt 8 that is stretched over the first drive roller 6 and the first driven roller 7. The first conveying unit 5 is a sheet held on the first conveying belt 8 by the first driving roller 6 being rotated in the clockwise direction in FIG. 1 by a control signal from the control unit 110 of the inkjet recording apparatus 100. S is transported along the paper transport direction X.

  The recording unit 9 includes a head housing 10 and line heads 11C, 11M, 11Y, and 11K held by the head housing 10. These line heads 11 </ b> C to 11 </ b> K are supported at a height that is separated from the conveyance surface of the first conveyance belt 8 by a predetermined distance (for example, 1 mm). As shown in FIG. 2, the line heads 11 </ b> C to 11 </ b> K each have a plurality (three in this case) of recording heads 17 a to 17 c. Each of the recording heads 17 a to 17 c has a head portion 18. In each of the line heads 11 </ b> C to 11 </ b> K, the head portions 18 are arranged in a staggered manner along the paper width direction A (vertical direction in FIG. 2) orthogonal to the paper transport direction X.

  As shown in FIGS. 3 and 4, the head unit 18 has an ink ejection surface F1 including an ink ejection region R1 in which a plurality of ink ejection nozzles 18a (see FIG. 2) are arranged. The ink discharge nozzle 18a has a lower opening. The lower opening is an ink ejection port that ejects ink onto the paper S. The ink ejection surface F1 constitutes the wiping surface of the present invention. Since the recording heads 17a to 17c have the same shape and configuration, the recording heads 17a to 17c are shown in one drawing in FIGS.

  In the recording heads 17a to 17c of the line heads 11C to 11K, inks of four colors (cyan, magenta, yellow, and black) stored in ink tanks (not shown) are respectively provided for the colors of the line heads 11C to 11K. Supplied.

  Each of the recording heads 17a to 17c is transported while being sucked and held on the transport surface of the first transport belt 8 in accordance with image data received from an external computer by a control signal from the control unit 110 (see FIG. 1). Ink is ejected from the ink ejection nozzle 18a. As a result, a color image is formed on the paper S on the first conveying belt 8 by superimposing the four ink colors cyan, magenta, yellow and black.

  The recording heads 17a to 17c are provided with a cleaning liquid supply member 60 for supplying the cleaning liquid 23 (see FIG. 11). The cleaning liquid supply member 60 is disposed adjacent to the upstream side (right side in FIG. 3) of the wiping direction A1 (an example of the first direction of the present invention) of the wiper member 35 described later with respect to the head unit 18. Here, the wiping direction A1 is a direction in which the wiper member 35 moves in contact with the ink ejection surface F1 when the ink ejection surface F1 is cleaned (see FIGS. 12, 13, and 16). The cleaning liquid supply member 60 has a cleaning liquid supply surface F2 including a cleaning liquid supply region R2 in which a plurality of cleaning liquid supply ports 63 and 64 (an example of the supply port of the present invention) (see FIG. 6) for supplying the cleaning liquid are arranged. Further, a groove 65 (an example of the first linear recess according to the present invention) that holds the cleaning liquid is formed on the cleaning liquid supply surface F2. Note that at least the cleaning liquid supply surface F2 of the cleaning liquid supply member 60 is formed of resin or SUS (stainless steel), and at least the ink discharge surface F1 of the head portion 18 is formed of, for example, SUS (stainless steel). The cleaning liquid supply surface F2 constitutes the wiping surface of the present invention together with the ink discharge surface F1. The wiping surface is a surface with which the wiper member 35 contacts when the wiper member 35 is moved when the ink discharge surface F1 is cleaned.

  6 and 7, the plurality of cleaning liquid supply ports 63 and 64 include a plurality of first cleaning liquid supply ports 63 (an example of the first supply port of the present invention) and a plurality of second cleaning liquid supply ports 64 ( An example of a second supply port of the present invention.

  The plurality of first cleaning liquid supply ports 63 are located upstream of the ink discharge region R1 (see FIGS. 3 to 5) in the wiping direction A1 and a predetermined movement start position MS of the wiper member 35 (position shown in FIG. 12). Rather than the wiping direction A1. The plurality of first cleaning liquid supply ports 63 are arranged in a line on a straight line along the head width direction B (an example of the second direction of the present invention) orthogonal to the wiping direction A1. Each of the plurality of first cleaning liquid supply ports 63 communicates with a storage space 66 that stores the cleaning liquid. The first cleaning liquid supply port 63 is open on the cleaning liquid supply surface F2. The cleaning liquid 23 in the storage space 66 is supplied to the cleaning liquid supply region R2 through the first cleaning liquid supply port 63 (see FIGS. 11 and 15). The cleaning liquid 23 (see FIG. 11) supplied from the first cleaning liquid supply port 63 to the cleaning liquid supply region R2 is held in the groove 65 (see FIG. 14) and is used for cleaning the ink ejection surface F1. The plurality of first cleaning liquid supply ports 63 are separated from each other in the head width direction B. The plurality of first cleaning liquid supply ports 63 are formed in a line on a straight line along the head width direction B on the upstream side of the plurality of second cleaning liquid supply ports 64 and the groove portion 65 in the wiping direction A1. Yes. That is, a plurality of first cleaning liquid supply ports 63 are arranged in a line on the straight line along the head width direction B apart from each other on the cleaning liquid supply surface F2. The inner diameter of the first cleaning liquid supply port 63 is, for example, 10 μm or more and 100 μm or less.

  The plurality of second cleaning liquid supply ports 64 are located upstream in the wiping direction A1 from the ink discharge region R1 (see FIGS. 3 to 5) and in the wiping direction A1 from the movement start position MS (position shown in FIG. 12). It is spaced downstream. The plurality of second cleaning liquid supply ports 64 are arranged in a line on a straight line along the head width direction B. The plurality of second cleaning liquid supply ports 64 communicate with the accommodation space 66. The second cleaning liquid supply port 64 is open on the cleaning liquid supply surface F2. The cleaning liquid 23 in the storage space 66 is supplied to the cleaning liquid supply region R2 through the second cleaning liquid supply port 64 (see FIGS. 11 and 15). The cleaning liquid 23 (see FIG. 11) supplied from the second cleaning liquid supply port 64 to the cleaning liquid supply region R2 is used for cleaning the ink discharge surface F1. The plurality of second cleaning liquid supply ports 64 are separated from each other in the head width direction B. The plurality of second cleaning liquid supply ports 64 are formed in a line on a straight line along the head width direction B on the downstream side of the plurality of first cleaning liquid supply ports 63 and the groove portion 65 in the wiping direction A1. Yes. That is, the plurality of second cleaning liquid supply ports 64 are separated from each other on the cleaning liquid supply surface F2, and are linearly along the head width direction B on the downstream side of the plurality of first cleaning liquid supply ports 63 and the groove portion 65 in the wiping direction A1. Are arranged in a row. The inner diameter of the second cleaning liquid supply port 64 is, for example, not less than 10 μm and not more than 100 μm.

  The groove 65 has a plurality of first cleaning liquids downstream in the wiping direction A1 from the row of the plurality of first cleaning liquid supply ports 63 and upstream in the wiping direction A1 from the ink discharge region R1 (see FIGS. 3 to 5). It is formed apart from the supply port 63. Further, the groove 65 is formed away from the second cleaning liquid supply port 64 on the upstream side in the wiping direction A1 from the row of the plurality of second cleaning liquid supply ports 64. The groove 65 holds the cleaning liquid 23 supplied from the first cleaning liquid supply port 63, and makes the wiper member 35 before contacting the ink ejection surface F1 contact the cleaning liquid 23 (see FIGS. 14 and 15). The groove portion 65 is formed in a straight line extending along the head width direction B. The length of the groove 65 in the head width direction B is larger than the length of the plurality of first cleaning liquid supply ports 63 in the head width direction B and smaller than the length of the cleaning liquid supply member 60 in the head width direction B. . The length dimension of the groove portion 65 in the head width direction B may be the same as the length dimension of the cleaning liquid supply member 60 in the head width direction B. In other words, the groove 65 may cross the cleaning liquid supply member 60 along the head width direction B. Further, the groove 65 has a semicircular cross section. The groove 65 is formed with a width and a depth of 10 μm or more and 50 μm or less, for example.

  The cross-sectional shape of the groove 65 is not limited to a semicircular shape, and may be other shapes such as a rectangle and a triangle. The groove 65 may be a chamfered edge along the head width direction B. When the groove portion 65 is chamfered, the load acting on the wiper member 35 when the wiper member 35 passes through the groove portion 65 can be reduced, so that wear of the wiper member 35 can be suppressed. The chamfering may be either R chamfering or C chamfering, but R chamfering is more preferable from the viewpoint of suppressing wear of the wiper member 35.

  As shown in FIGS. 3 and 5, an inclined surface 62 is formed on the upstream side (right side in FIG. 3) of the wiping direction A <b> 1 with respect to the cleaning liquid supply surface F <b> 2 of the cleaning liquid supply member 60. A portion of the cleaning liquid supply surface F2 on the downstream side (left side in FIG. 3) in the wiping direction A1 is formed in a thin plate shape, and is disposed so as to overlap the end portion of the ink discharge surface F1 of the head portion 18.

  As shown in FIGS. 5 and 8, a tube 70 through which the cleaning liquid passes is connected to the cleaning liquid supply member 60. The tube 70 is connected to a cleaning liquid supply mechanism (not shown). The cleaning liquid supply mechanism includes, for example, a tank (not shown) that stores the cleaning liquid, and a pump (not shown) that pumps the cleaning liquid from the tank to the tube 70.

  The tube 70 has a plurality of branch portions. In the present embodiment, the tube 70 has twelve branch portions, and each branch portion is connected to the cleaning liquid supply member 60 of the recording heads 17a to 17c. In FIG. 5 and FIG. 8 described later, only some of the recording heads 17a to 17c are illustrated for easy understanding.

  In the ink jet recording apparatus 100, in order to clean the ink ejection surfaces F1 of the recording heads 17a to 17c, the cleaning liquid is supplied to all the recording heads 17a to 17c at the start of printing after a long stop and between printing operations. The cleaning liquid 23 (see FIG. 11) is supplied from the ports 63 and 64 (see FIG. 6), and the ink discharge surface F1 is wiped off by a wiper member 35 described later to prepare for the next printing operation.

  Returning to FIG. 1, the second transport unit 12 is arranged on the downstream side (right side in FIG. 1) in the paper transport direction X with respect to the first transport unit 5. The second transport unit 12 includes a second drive roller 13, a second driven roller 14, and a second transport belt 15 stretched over the second drive roller 13 and the second driven roller 14. In the second transport unit 12, the paper S held on the second transport belt 15 is transported along the paper transport direction X when the second drive roller 13 is rotationally driven in the clockwise direction of FIG. 1.

  The sheet S on which the image by the ink is recorded by the recording unit 9 is sent to the second transport unit 12. The ink on the surface of the paper S is dried while passing through the second transport unit 12. A maintenance unit 19 and a cap unit 90 are disposed below the second transport unit 12. The maintenance unit 19 moves below the recording unit 9 when performing the wiping operation by the wiper member 35 described above. Further, the maintenance unit 19 wipes the cleaning liquid 23 (see FIG. 11) supplied from the cleaning liquid supply ports 63 and 64 of the recording heads 17a to 17c while applying the cleaning liquid 23 to the ink discharge surface F1, and collects the wiped cleaning liquid. The cap unit 90 moves horizontally below the recording unit 9 when capping the ink ejection surfaces F1 (see FIG. 3) of the recording heads 17a to 17c. Furthermore, the cap unit 90 covers the lower surfaces of the recording heads 17a to 17c by moving upward from below the recording unit 9.

  A discharge roller pair 16 is provided on the downstream side in the paper transport direction X with respect to the second transport unit 12 to discharge the paper S on which an image has been recorded to the outside of the apparatus main body. A discharge tray (not shown) on which the sheets S discharged to the outside of the apparatus main body are stacked is provided on the downstream side of the discharge roller pair 16.

  The maintenance unit 19 includes a plurality of wiper members 35 (see FIG. 10) that can move along the ink ejection surface F1, a substantially rectangular carriage (not shown) to which the plurality of wiper members 35 are fixed, and supports the carriage. Supporting frame (not shown). The carriage is supported to be slidable in the paper width direction A (see FIG. 2) with respect to the support frame.

  The wiper member 35 is an elastic member (for example, made of rubber made of EPDM) for wiping the cleaning liquid supplied from the cleaning liquid supply ports 63 and 64 (see FIG. 6) of the recording heads 17a to 17c on the ink discharge surface F1. Member). The wiper member 35 is in pressure contact with the inclined surface 62 on the upstream side in the wiping direction A1 with respect to the cleaning liquid supply region R2 (see FIG. 4) of the cleaning liquid supply member 60, and the cleaning liquid supply surface F2 and the ink discharge surface F1 are moved by the movement of the carriage. It moves in close contact with the wiping surface along (wiping surface). Thereby, the wiping surface is wiped by the wiper member 35.

  Next, the recovery operation of the recording heads 17a to 17c using the maintenance unit 19 in the inkjet recording apparatus 100 of the present embodiment will be described. The recovery operation of the recording heads 17a to 17c described below is executed by controlling the operations of the recording heads 17a to 17c, the maintenance unit 19 and the like based on a control signal from the control unit 110 (see FIG. 1). The

  When performing the recovery operation of the recording heads 17a to 17c, first, as shown in FIG. 9, the control unit 110 (see FIG. 1) lowers the first transport unit 5 located below the recording unit 9. Then, the control unit 110 horizontally moves the maintenance unit 19 disposed below the second transport unit 12 so as to be disposed between the recording unit 9 and the first transport unit 5. In this state, the wiper member 35 of the maintenance unit 19 is disposed below the ink discharge surface F1 and the cleaning liquid supply surface F2 of the recording heads 17a to 17c (see FIG. 10).

(Cleaning liquid supply operation)
As shown in FIGS. 10 and 11, the cleaning liquid 23 is supplied to the cleaning liquid supply member 60 of the recording heads 17a to 17c by the control unit 110 prior to the wiping operation described later. The supplied cleaning liquid 23 is supplied from the first cleaning liquid supply port 63 and the second cleaning liquid supply port 64 by a predetermined amount to the cleaning liquid supply region R2.

(Purge operation)
As shown in FIG. 10, prior to a wiping operation described later, the control unit 110 supplies the ink 22 to the recording heads 17a to 17c. The supplied ink 22 is forcibly purged from the ink discharge nozzle 18a. By this purging operation, thickened ink, foreign matter and bubbles in the ink discharge nozzle 18a are discharged from the ink discharge nozzle 18a. At this time, the purge ink 22 is pushed out to the ink discharge surface F1 along the shape of the ink discharge region R1 where the ink discharge nozzle 18a exists.

(Wiping operation)
As shown in FIG. 12, the control unit 110 raises the wiper member 35 to bring it into contact with the inclined surface 62 of the cleaning liquid supply member 60 of the recording heads 17 a to 17 c with a predetermined pressure. The position before the wiper member 35 contacts the inclined surface 62 and moves in the wiping direction A1 is an example of the movement start position of the present invention.

  As shown in FIG. 13, the controller 110 moves the wiper member 35 toward the ink discharge region R1 along the cleaning liquid supply surface F2 from the state where the tip of the wiper member 35 is in pressure contact with the inclined surface 62 of the cleaning liquid supply member 60. It moves along the wiping direction A1.

  By the way, when the plurality of cleaning liquid supply ports are arranged in a direction substantially orthogonal to the wiping direction of the wiper member, the cleaning liquid is discretely supplied to the wiper member. Therefore, the cleaning liquid partially exists in the wiper member, and when the wiping is performed, a region where the cleaning liquid does not exist in the wiper member comes into contact with the ink ejection surface. As a result, the cleaning effect in a region where no cleaning liquid is present is reduced. On the other hand, it is also conceivable to perform a plurality of wiping operations in order to spread the cleaning liquid over the entire contact portion of the wiper member with the ink ejection surface. However, the area where the cleaning liquid does not exist in the wiper member is in a so-called empty wiping state until the cleaning liquid is spread over the entire contact portion. Therefore, performing the wiping operation a plurality of times causes damage to the wiper member. become.

  In contrast, in the ink jet recording apparatus 100 of the present embodiment, the wiper member 35 is brought into contact with the cleaning liquid supply surface F2 and the ink discharge surface F1 (wiping surface) during the cleaning of the ink discharge surface F1, and moves along the wiping direction A1. In this case, the cleaning liquid 23 supplied from the first cleaning liquid supply port 63 is moved in the wiping direction A1 by the wiper member 35. At this time, as shown in FIG. 14, since the groove portion 65 is formed on the downstream side in the wiping direction A1 from the row of the plurality of first cleaning liquid supply ports 63, the cleaning liquid 23 moved by the wiper member 35 is in the groove portion 65. Retained. Further, the wiper member 35 passes through the groove 65 in which the cleaning liquid 23 is held. Therefore, as shown in FIG. 15, the wiper member 35 contacts the cleaning liquid 23 held in the groove 65. On the other hand, the groove 65 is formed in a linear shape extending along the head width direction B (see FIGS. 11 and 14). Therefore, the cleaning liquid 23 exists in the groove 65 along the wiping direction A1, and the wiper member 35 can be brought into contact with the cleaning liquid 23 in series along the head width direction B. As a result, the entire contact portion of the wiper member 35 with the ink ejection surface F <b> 1 can be wetted with the cleaning liquid 23. Thus, when the wiper member 35 is moved in contact with the ink discharge surface F1, it is possible to avoid a so-called empty wipe state, so that the cleaning effect on the ink discharge surface F1 can be enhanced and the wiper member 35 Damage can be suppressed.

  As shown in FIG. 16, the wiper member 35 moves on the ink ejection surface F1 along the wiping direction A1 while maintaining the state where the cleaning liquid 23 is held. At this time, the cleaning liquid 23 and the purge ink 22 (see FIG. 10) dissolve the ink droplets (waste ink) that adheres to the ink ejection surface F1 and solidifies, and are wiped off by the wiper member 35. The wiper member 35 further moves along the wiping direction A1 and stops moving in the wiping direction A1 when it reaches a position opposite to the cleaning liquid supply region R2 with respect to the ink discharge region R1. The cleaning liquid 23, waste ink, and purge ink 22 wiped off by the wiper member 35 are collected in a cleaning liquid collection tray (not shown) provided in the maintenance unit 19.

(Separation operation)
After execution of the wiping operation, as shown in FIG. 17, the control unit 110 lowers the wiper member 35 and separates it from the ink ejection surface F1.

  Finally, the control unit 110 horizontally moves the maintenance unit 19 arranged between the recording unit 9 and the first conveyance unit 5 and arranges the maintenance unit 19 below the second conveyance unit 12 to place the first conveyance unit 5 in a predetermined manner. Raise to the position. In this way, the recovery operation of the recording heads 17a to 17c is completed.

  In the present embodiment, a plurality of cleaning liquid supply ports 63 and 64 for supplying the cleaning liquid 23 are provided on the upstream side in the wiping direction A1 with respect to the ink discharge region R1. Thus, after supplying the cleaning liquid 23 from the cleaning liquid supply ports 63 and 64, the wiper member 35 is moved along the ink discharge surface F1 from the upstream side in the wiping direction A1 with respect to the cleaning liquid supply ports 63 and 64. The ink discharge surface F <b> 1 can be wiped while holding the cleaning liquid 23 at 35. For this reason, the ink discharge surface F1 can be cleaned.

  The wiping operation may be performed a plurality of times for one purge operation. Further, the number of wiping operations for one purge operation may be determined according to the environmental temperature, the environmental humidity, the main power off time of the inkjet recording apparatus 100, and the like. For example, in an environment where the ink drying speed is high and the ink viscosity tends to be high, such as high temperature and low humidity, or when the main power off time is long, the wiping operation is performed twice for one purge operation or It is possible to do this three times. Further, when the main power is turned on, it is preferable to execute the purge operation and the wiping operation after a predetermined time elapses from the main power on to the start of printing.

  In the above-described embodiment, an example in which the cleaning liquid supply operation is performed before the wiping operation has been described. However, the cleaning liquid supply operation is performed simultaneously with the wiping operation if the wiper member 35 is before entering the cleaning liquid supply region R2. May be. In this embodiment, an example in which the purge operation is executed before the wiping operation is shown. However, the purge operation is executed simultaneously with the wiping operation before the wiper member 35 enters the ink discharge region R1. Also good.

  In the above embodiment, the recovery operation of the recording heads 17a to 17c is performed using the cleaning liquid 23 and the purge ink 22. However, the recovery operation of the recording heads 17a to 17c may be performed using only the cleaning liquid 23. Good. That is, the purge operation may not be performed.

  Further, in the above-described embodiment, an example in which the cleaning liquid supply member 60 having the cleaning liquid supply region R2 and the groove portion 65 is provided separately from the head portion 18 has been described. However, the present invention is not limited to this, and the cleaning liquid supply member 60 may not be provided, and the cleaning liquid supply ports 63 and 64 and the groove 65 may be provided in the head portion 18.

  Further, the cleaning liquid supply member in the present invention can be changed with respect to the position, number and shape of the linear recesses, the number of supply port rows, the arrangement direction, and the like. Hereinafter, modifications of the present invention will be described with reference to FIGS.

  18 includes a first cleaning liquid supply port 63 (an example of the first supply port of the present invention), a second cleaning liquid supply port 64 (an example of the second supply port of the present invention), and a first groove portion. 651A (an example of the first linear concave portion of the present invention) and a second groove portion 652A (an example of the second linear concave portion of the present invention). The first groove portion 651A corresponds to the groove portion 65 (see FIG. 11) of the above-described embodiment. That is, the cleaning liquid supply member 60A is obtained by adding a second groove 652A to the cleaning liquid supply member 60 (see FIG. 11) of the above-described embodiment.

  The cleaning liquid supply member 60B shown in FIG. 19 includes a plurality of third cleaning liquid supply ports 631B (an example of the first supply port of the present invention) and a plurality of fourth cleaning liquid supply ports 632B (an example of the second supply port of the present invention). And the third groove portion 651B (an example of the first linear recess portion of the present invention) and the fourth groove portion 652B (an example of the second linear recess portion of the present invention).

  The third groove portion 651B communicates with the plurality of third cleaning liquid supply ports 631B, and allows the adjacent third cleaning liquid supply ports 631B to communicate with each other. That is, the cleaning liquid supplied from the plurality of third cleaning liquid supply ports 631B spreads in the head width direction B in the third groove 651B and is held in the third groove 651B.

  The fourth groove portion 652B communicates with the plurality of fourth cleaning liquid supply ports 632B and communicates the adjacent fourth cleaning liquid supply ports 632B with each other. That is, the cleaning liquid supplied from the plurality of fourth cleaning liquid supply ports 632B spreads in the head width direction B in the fourth groove portion 652B and is held in the fourth groove portion 652B.

  In the cleaning liquid supply member 60B, the cleaning liquid supplied from the plurality of third cleaning liquid supply ports 631B is held in the third groove portion 651B without moving the cleaning liquid in the wiping direction A1 by the wiper member 35, and the plurality of fourth cleaning liquid supply The cleaning liquid supplied from the port 632B is held in the fourth groove portion 652B. Therefore, the cleaning liquid supply member 60B can effectively wet the wiper member 35 without being affected by the wiping performance of the wiper member 35 and the like.

  In the cleaning liquid supply member 60C shown in FIG. 20, a first groove 651A corresponding to the groove 65 (see FIG. 11) of the cleaning liquid supply member 60 in the above-described embodiment is added to the above-described cleaning liquid supply member 60B (see FIG. 19). It is a thing.

  The cleaning liquid supply member 60D shown in FIG. 21 is a straight line along an inclination direction C (an example of the second direction of the present invention) inclined with respect to the head width direction B in the above-described cleaning liquid supply member 60A (see FIG. 18). In addition, a plurality of first cleaning liquid supply ports 63 and a plurality of second cleaning liquid supply ports 64 are arranged. In the cleaning liquid supply member 60D, the first groove portion 651A (an example of the first linear concave portion of the present invention) and the second groove portion 652A (an example of the second linear concave portion of the present invention) are linearly formed along the inclination direction C. Is formed. In the cleaning liquid supply member 60D, the second groove portion 652A may be omitted.

  The cleaning liquid supply member 60E shown in FIG. 22 has a plurality of third cleaning liquid supply ports 631B and a plurality of fourth cleaning liquid supply ports 632B on a straight line along the inclination direction C in the above-described cleaning liquid supply member 60B (see FIG. 19). It is arranged. Further, in the cleaning liquid supply member 60E, the third groove portion 651B (an example of the second linear concave portion of the present invention) and the fourth groove portion 652B (an example of the second linear concave portion of the present invention) are linear along the inclination direction C. Is formed.

  The cleaning liquid supply member 60F shown in FIG. 23 includes a plurality of third cleaning liquid supply ports 631B (an example of the first supply port of the present invention) and a plurality of fourth cleaning liquid supplies in the above-described cleaning liquid supply member 60C (see FIG. 20). The port 632B (an example of the third supply port of the present invention) is arranged on a straight line along the inclination direction C. In the cleaning liquid supply member 60F, the first groove portion 651A (an example of the first linear concave portion of the present invention), the third groove portion 651B (an example of the first linear concave portion of the present invention), and the fourth groove portion 652B (the present invention). An example of the third linear concave portion is formed in a straight line along the inclination direction C.

  The cleaning liquid supply member 60G shown in FIG. 24 omits the second cleaning liquid supply port 64 in the cleaning liquid supply member 60 (see FIG. 11) of the above-described embodiment, and has a groove 65 (the first linear concave portion of the present invention). An example) is formed in a straight line along the inclination direction C.

  In the cleaning liquid supply member 60H shown in FIG. 25, the second cleaning liquid supply port 64 is omitted in the cleaning liquid supply member 60 (see FIG. 11) of the above-described embodiment, and the plurality of first cleaning liquid supply ports 63 are inclined in the direction C. It is arranged on a straight line along

  In the cleaning liquid supply member 60I shown in FIG. 26, a plurality of linear concave portions (the fifth groove portion 651I and the two sixth groove portions 652I) having a small length along the head width direction B are arranged in a staggered manner. This is different from the cleaning liquid supply member 60 (see FIG. 8) according to the above-described embodiment. The cleaning liquid supply member 60I includes a first cleaning liquid supply port 63 (an example of the first supply port of the present invention), a second cleaning liquid supply port 64 (an example of the second supply port of the present invention), and a fifth groove portion 651I (of the present invention). An example of a first linear recess) and a plurality of sixth groove portions 652I (an example of a second linear recess of the present invention). In the present embodiment, the number of the sixth groove portions 652I is two.

  The fifth groove portion 651I has a head width in a region downstream of the row of the plurality of first cleaning liquid supply ports 63 in the wiping direction A1 and upstream of the row of the plurality of second cleaning liquid supply ports 64 in the wiping direction A1. It is formed in a straight line along the direction B. Specifically, the fifth groove portion 651 </ b> I includes a first cleaning liquid supply port 63 disposed at a central portion in the head width direction B in the row of the plurality of first cleaning liquid supply ports 63, and a plurality of second cleaning liquid supply ports 64. It is formed between the second cleaning liquid supply port 64 disposed in the center of the row in the head width direction B. Further, the fifth groove portion 651I has a first cleaning liquid supply port 63 and a second cleaning liquid supply which are arranged at the center in the head width direction B among the plurality of first cleaning liquid supply ports 63 and the plurality of second cleaning liquid supply ports 64. It extends linearly in the head width direction B along the row of the ports 64. The length dimension of the fifth groove portion 651I along the head width direction B is smaller than the length of the plurality of first cleaning liquid supply ports 63 and the plurality of second cleaning liquid supply ports 64.

  The plurality of sixth groove portions 652I are formed linearly along the head width direction B in the row of the plurality of second cleaning liquid supply ports 64 and the region downstream of the fifth groove portion 651I in the wiping direction A1. Further, the sixth groove portion 652I is formed along the row of the second cleaning liquid supply ports 64 arranged at the end in the head width direction B in the row of the plurality of second cleaning liquid supply ports 64. That is, the sixth groove portion 652I is displaced in the head width direction B with respect to the fifth groove portion 651I. Note that the length of the sixth groove portion 652I along the head width direction B is approximately the same as that of the fifth groove portion 651I. The total dimension along the head width direction B of the fifth groove portion 651I and the plurality of sixth groove portions 652I is larger than the length of the row of the cleaning liquid supply ports 63 and 64.

  In the cleaning liquid supply member 60I, the fifth groove portion 651I and the plurality of sixth groove portions 652I are arranged in a staggered pattern along the head width direction B. Therefore, the cleaning liquid supplied from the plurality of first cleaning liquid supply ports 63 and the plurality of second cleaning liquid supply ports 64 is moved in the wiping direction A1 by the movement of the wiper member 35 in the wiping direction A1, and the fifth groove portion 651I and the plurality of the cleaning liquids are supplied. Is held by the sixth groove portion 652I.

  In the cleaning liquid supply member 60I, two fifth groove portions 651I may be provided, while one sixth groove portion 652I may be provided, and the fifth groove portion 651I and the sixth groove portion 652I may be arranged in a staggered manner.

  The cleaning liquid supply member 60J shown in FIG. 27 includes a fifth groove portion 651I (an example of the first linear concave portion of the present invention) and a plurality of sixth groove portions 652I (the present invention) in the above-described cleaning liquid supply member 60I (see FIG. 26). Of the second linear recesses on the rows of the first cleaning liquid supply port 63 (an example of the first supply port of the present invention) and the second cleaning liquid supply port 64 (an example of the second supply port of the present invention), respectively. It is formed. Further, the fifth groove portion 651I and the plurality of sixth groove portions 652I are arranged in a staggered manner. In the present embodiment, the number of the sixth groove portions 652I is two.

  The fifth groove portion 651I is formed in a linear shape along the head width direction B on the row of the plurality of first cleaning liquid supply ports 63. Specifically, the fifth groove portion 651 </ b> I communicates with the first cleaning liquid supply port 63 disposed at the center of the plurality of first cleaning liquid supply ports 63. That is, since the first cleaning liquid supply port 63 in the central portion communicates with each other through the fifth groove portion 651I, the cleaning liquid supplied from these first cleaning liquid supply ports 63 spreads in the head width direction B at the fifth groove portion 651I. The fifth groove 651I is held.

  The plurality of sixth groove portions 652 </ b> I are formed in a straight line along the head width direction B on the row of the plurality of second cleaning liquid supply ports 64. Specifically, the plurality of sixth groove portions 652 </ b> I communicate with the second cleaning liquid supply port 64 arranged at the end of the row of the plurality of second cleaning liquid supply ports 64. That is, since the second cleaning liquid supply port 64 at the end communicates with each other through the sixth groove portion 652I, the cleaning liquid supplied from the second cleaning liquid supply port 64 spreads in the head width direction B at the sixth groove portion 652I. , Held in the sixth groove portion 652I.

  The cleaning liquid supply member 60K shown in FIG. 28 is provided with a plurality of fifth groove portions 651I (an example of the first linear recess portion of the present invention) and a sixth groove portion 652I (an example of the second linear recess portion of the present invention). It is. The plurality of fifth groove portions 651 </ b> I and the plurality of sixth groove portions 652 </ b> I are arranged in a staggered manner along the head width direction B. In the present embodiment, the plurality of fifth groove portions 651I is two, and the plurality of sixth groove portions 652I is three.

  In the cleaning liquid supply member 60L shown in FIG. 29, the supply ports (the fifth cleaning liquid supply port 631L and the sixth cleaning liquid supply port 632L) are arranged on the bent line, and the linear recesses (the seventh groove portion 651L and the eighth groove portion 652L). The cleaning liquid supply member 60 (see FIG. 11) according to the above-described embodiment is different in that it is formed in a bent line shape. The cleaning liquid supply member 60L includes a fifth cleaning liquid supply port 631L (an example of the third supply port of the present invention), a sixth cleaning liquid supply port 632L (an example of the fourth supply port of the present invention), and a seventh groove portion 651L (of the present invention). An example of a fourth linear recess) and an eighth groove 652L (an example of a fifth linear recess of the present invention).

  The plurality of fifth cleaning liquid supply ports 631L are spaced apart in the head width direction B and are disposed on the first bent line. The first bent line is an example of a curve in which both end portions are located on the downstream side in the wiping direction A1 with respect to the intermediate portion. The first bent line includes a portion along the first inclined direction C1 or the second inclined direction C2 which is a direction intersecting with the wiping direction A1 and inclined toward the wiping direction A1 with respect to the head width direction B.

  The plurality of sixth cleaning liquid supply ports 632L are disposed on a second bending line parallel to the first bending line on the downstream side of the plurality of fifth cleaning liquid supply ports 631L in the wiping direction A1.

  The seventh groove portion 651L is formed in a region downstream of the row of the plurality of fifth cleaning liquid supply ports 631L in the wiping direction A1 and upstream of the row of the plurality of sixth cleaning liquid supply ports 632L in the wiping direction A1. Yes. The seventh groove portion 651L is formed in a bent line shape parallel to the row of the plurality of fifth cleaning liquid supply ports 631L.

  The eighth groove portion 652L has a bent line shape parallel to the row of the plurality of sixth cleaning liquid supply ports 632L in the row of the plurality of sixth cleaning liquid supply ports 632L and the region downstream of the seventh groove portion 651L in the wiping direction A1. Is formed.

  In the cleaning liquid supply member 60L, the cleaning liquid supplied from the fifth cleaning liquid supply port 631L is moved in the wiping direction A1 by the wiper member 35 (see FIG. 13 and the like), whereby the cleaning liquid is held in the seventh groove portion 651L. The cleaning liquid supplied from the sixth cleaning liquid supply port 632L is held in the eighth groove portion 652L by being moved in the wiping direction A1 by the wiper member 35. Therefore, in the cleaning liquid supply member 60L, the wiper member 35 can be effectively wetted by the cleaning liquid by passing through the seventh groove portion 651L and the eighth groove portion 652L.

  In the cleaning liquid supply member 60M shown in FIG. 30, the seventh groove portion 651L (an example of the third linear concave portion of the present invention) and the eighth groove portion 652L are the fifth cleaning liquid supply in the above-described cleaning liquid supply member 60L (see FIG. 29). It is formed on a row of ports 631L (an example of a third supply port of the present invention) and a sixth cleaning liquid supply port 632L (an example of a fourth supply port of the present invention). That is, the seventh groove portion 651L communicates with the fifth cleaning liquid supply port 631L, and the eighth groove portion 652L communicates with the sixth cleaning liquid supply port 632L.

  In the cleaning liquid supply member 60N shown in FIG. 31, the eighth groove 652L and the sixth cleaning liquid supply port 632L are omitted from the above-described cleaning liquid supply member 60L (see FIG. 29), and the fifth cleaning liquid supply port 631L is disposed in the head width direction. It is formed on a straight line along B.

  The cleaning liquid supply member 60O shown in FIG. 32 includes a fifth cleaning liquid supply port 631L (an example of a third supply port of the present invention) and a sixth cleaning liquid supply port 632L (this) in the above-described cleaning liquid supply member 60L (see FIG. 29). An example of the fourth supply port of the invention is arranged along a curved line, and the seventh groove portion 651L (an example of the third linear concave portion of the invention) and the eighth groove portion 652L are formed in a curved shape.

  The cleaning liquid supply member 60P shown in FIG. 33 is similar to the above-described cleaning liquid supply member 60O (see FIG. 32). The seventh groove portion 651L (an example of the third linear concave portion of the present invention) and the eighth groove portion 652L are the fifth cleaning liquid. The supply port 631L (an example of a third supply port of the present invention) and a sixth cleaning liquid supply port 632L (an example of a fourth supply port of the present invention) are formed in a row. That is, the seventh groove portion 651L is formed in a curved shape on the row of the plurality of fifth cleaning liquid supply ports 631L and communicates with the plurality of fifth cleaning liquid supply ports 631L. The eighth groove portion 652L is formed in a curved shape on the row of the plurality of sixth cleaning liquid supply ports 632L, and communicates with the plurality of sixth cleaning liquid supply ports 632L.

  The cleaning liquid supply member 60Q shown in FIG. 34 is obtained by forming the seventh groove portion 651L in a curved shape in the above-described cleaning liquid supply member 60N (see FIG. 31).

  In the cleaning liquid supply member 60R shown in FIG. 35, the supply ports (the fifth cleaning liquid supply port 631L and the sixth cleaning liquid supply port 632L) are arranged on the bending line, and the linear recesses (the ninth groove portion 651R, the tenth groove portion 652R, The eleventh groove 653R and the twelfth groove 654R) are formed linearly along the first inclined direction C1 or the second inclined direction C2 on the supply port array, and the cleaning liquid supply member 60 according to the above-described embodiment. (See FIG. 11).

  The cleaning liquid supply member 60R includes a fifth cleaning liquid supply port 631L (an example of the supply port of the present invention), a sixth cleaning liquid supply port 632L (an example of the supply port of the present invention), a ninth groove portion 651R (the linear recess of the present invention). An example), a tenth groove 652R (an example of a linear recess according to the present invention), an eleventh groove 653R (an example of a linear recess according to the present invention), and a twelfth groove 654R (an example of a linear recess according to the present invention).

  The ninth groove portion 651R is linearly formed on the row of fifth cleaning liquid supply ports 631L arranged along the first inclined direction C1 among the plurality of fifth cleaning liquid supply ports 631L. That is, the ninth groove portion 651R communicates with the fifth cleaning liquid supply port 631L arranged along the first inclined direction C1 among the plurality of fifth cleaning liquid supply ports 631L, and these fifth cleaning liquid supply ports 631L are mutually connected. Communicate.

  The tenth groove portion 652R is linearly formed on the row of fifth cleaning liquid supply ports 631L arranged along the second inclined direction C2 among the plurality of fifth cleaning liquid supply ports 631L. That is, the tenth groove portion 652R communicates with the fifth cleaning liquid supply port 631L arranged along the second inclined direction C2 among the plurality of fifth cleaning liquid supply ports 631L, and these fifth cleaning liquid supply ports 631L are mutually connected. Communicate.

  The eleventh groove portion 653R is linearly formed on the row of sixth cleaning liquid supply ports 632L arranged along the first inclined direction C1 among the plurality of sixth cleaning liquid supply ports 632L. In other words, the eleventh groove portion 653R communicates with the sixth cleaning liquid supply port 632L arranged along the first inclined direction C1 among the plurality of sixth cleaning liquid supply ports 632L, and these sixth cleaning liquid supply ports 632L are connected to the sixth cleaning liquid supply port 632L. Communicate with each other.

  The twelfth groove 654R is linearly formed on the row of sixth cleaning liquid supply ports 632L arranged along the second inclined direction C2 among the plurality of sixth cleaning liquid supply ports 632L. In other words, the twelfth groove portion 654R communicates with the sixth cleaning liquid supply port 632L arranged along the second inclined direction C2 among the plurality of sixth cleaning liquid supply ports 632L, and these sixth cleaning liquid supply ports 632L are connected to the sixth cleaning liquid supply port 632L. Communicate with each other.

  In the cleaning liquid supply member 60R, the cleaning liquid supplied from the fifth cleaning liquid supply port 631L arranged along the first inclined direction C2 among the plurality of fifth cleaning liquid supply ports 631L is supplied to the ninth groove portion 651R. The cleaning liquid supplied from the fifth cleaning liquid supply port 631L arranged along the second inclined direction C2 in the fifth cleaning liquid supply port 631L is supplied to the tenth groove portion 652R. In the cleaning liquid supply member 60R, the cleaning liquid supplied from the sixth cleaning liquid supply port 632L arranged along the first inclined direction C2 among the plurality of sixth cleaning liquid supply ports 632L is supplied to the eleventh groove portion 653R. The cleaning liquid supplied from the sixth cleaning liquid supply port 632L arranged along the second inclined direction C2 among the plurality of sixth cleaning liquid supply ports 632L is supplied to the twelfth groove portion 654R.

  36 has five groove portions 651S, 652S, 653S, 654S, and 655S, and each of the groove portions 651S to 655S is adjacent to the cleaning liquid supply ports 631L and 632L (an example of the supply port of the present invention). ) Communicate with each other. The groove portions 651S to 655S are examples of the linear concave portion of the present invention.

  37 has six groove portions 651T, 652T, 653T, 654T, 655T, and 656T, and each of the groove portions 651T to 656T is adjacent to the cleaning liquid supply ports 631L and 632L (supply ports of the present invention). Example) are communicated with each other. The groove portions 651T to 656T are examples of the linear concave portion of the present invention.

  Further, a configuration obtained by appropriately combining the configurations of the above-described embodiment and modification examples is also included in the technical scope of the present invention.

100 Inkjet recording device (recording device)
17a to 17c recording head 18a ink discharge nozzle 23 cleaning liquid 35 wiper member 63 first cleaning liquid supply port 64 second cleaning liquid supply port 631B third cleaning liquid supply port 632B fourth cleaning liquid supply port 631L fifth cleaning liquid supply port 632L sixth cleaning liquid supply port 65 groove portion 651A first groove portion 652A second groove portion 651B third groove portion 652B fourth groove portion 651I fifth groove portion 652I sixth groove portion 651L seventh groove portion 652L eighth groove portion 651R ninth groove portion 652R tenth groove portion 653R eleventh groove portion 654 651S to 655S, 651T to 656T Groove 60, 60A to 60T Cleaning liquid supply member F1 Ink discharge surface R1 Ink discharge region F2 Cleaning liquid supply surface R2 Cleaning liquid supply region

Claims (10)

An ink discharge nozzle from which ink is discharged;
A wiper member that moves in a predetermined first direction in contact with a wiping surface having an ink discharge region provided with the ink discharge nozzle;
A second direction that intersects the first direction on the wiping surface upstream of the ink ejection region in the first direction and downstream of the predetermined movement start position of the wiper member. A plurality of supply ports for supplying a cleaning liquid used for cleaning the ink discharge region, arranged in a row separated from each other,
A cleaning liquid supply region provided with the plurality of supply ports on the wiping surface, or a downstream side in the first direction with respect to the cleaning liquid supply region on the wiping surface and an upstream side in the first direction with respect to the ink discharge region. And a linear recess formed in a linear shape extending in the second direction on the row of the plurality of supply ports or on the downstream side of the first direction with respect to the row of the plurality of supply ports. . The plurality of supply ports have a plurality of first supply ports arranged in a line on a straight line along the second direction,
2. The ink jet recording apparatus according to claim 1, wherein the linear recess includes a first linear recess formed in a straight line parallel to the row of the plurality of first supply ports.   The inkjet recording apparatus according to claim 2, wherein the first linear recess is formed on a downstream side in the first direction with respect to a row of a plurality of first supply ports.   The plurality of supply ports are arranged in a row on a straight line along the row of the plurality of first supply ports on the downstream side in the first direction from the row of the plurality of first supply ports. The inkjet recording apparatus according to claim 3, further comprising a supply port.   The inkjet recording apparatus according to claim 4, wherein the first linear recess is formed on an upstream side in the first direction with respect to the row of the plurality of second supply ports.   The inkjet recording apparatus according to claim 5, wherein the linear concave portion further includes a second linear concave portion formed downstream of the plurality of second supply ports in the first direction. At least one of the first linear recess and the second linear recess is provided in plural,
The inkjet recording apparatus according to claim 6, wherein the first linear concave portions and the second linear concave portions are arranged in a staggered manner along the second direction. The plurality of supply ports have a plurality of third supply ports arranged in a line along a curve whose both end portions are located on the downstream side in the first direction with respect to the intermediate portion,
The inkjet recording apparatus according to claim 1, wherein the linear recess has a third linear recess formed in a curved shape extending along the row of the plurality of third supply ports.   The inkjet recording apparatus according to claim 8, wherein the third linear recess is formed on the downstream side in the first direction with respect to the row of the plurality of third supply ports.   The plurality of supply ports are arranged in a row on a curve along the row of the plurality of third supply ports on the downstream side in the first direction from the row of the plurality of third supply ports. The ink jet recording apparatus according to claim 9, further comprising a supply port.

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