JP6540726B2 - Printing device - Google Patents

Description

  The present invention relates to a printing apparatus.

  BACKGROUND Conventionally, there is known a printing apparatus provided with a cap member that can be in close contact with a discharge surface on which a nozzle is formed. For example, the printing apparatus disclosed in Patent Document 1 includes a line head, a cap member, a suction pump, and a fluid recovery member. The line head has a nozzle forming surface provided with a nozzle opening. The cap member includes a frame-like seal portion which can be in close contact with the nozzle forming surface so as to surround the nozzle opening. The seal portion is formed of an elastomer which is an example of an elastic body. The suction pump is connected to a suction port provided in the cap member. The fluid recovery member is housed in the cap member and located above the suction port. The fluid recovery member impregnates an ink component which is an example of the fluid component. The inside of the cap member is sealed by lowering the line head to a position in close contact with the seal portion. Thereafter, the ink is forced to be expelled from the nozzle opening and sucked by the suction pump by the suction pump reducing the pressure in the inner space of the cap member.

JP, 2009-12389, A

  A printing apparatus may be considered that includes a regulating member that regulates the inward deformation of the seal portion as the pressure in the inner space of the cap member decreases. As an example, it is conceivable that the regulating member is in the form of a frame disposed between the inner end surface of the seal portion and the fluid recovery member.

  Drops may form on the fluid recovery member. In this case, it is conceivable that the suction pump suctions a droplet in a state where the line head is separated upward from the seal portion and the cap member is opened. However, in the area separated from the suction port in the inner space, the air flow toward the suction port may be less likely to be generated as compared with the area in the inner space adjacent to the suction port. Thus, the suction pump may not be able to uniformly aspirate the droplets generated on the fluid recovery member.

  An object of the present invention is to provide a printing apparatus which is less likely to cause deformation of the cap due to a drop in pressure inside the cap, and which is easy to uniformly suck droplets generated inside the cap.

A printing apparatus according to a first aspect of the present invention includes a head having a plurality of nozzles and having a discharge surface facing a predetermined direction, and a frame-shaped wall formed of an elastic body, and the frame-shaped wall is The frame-shaped wall portion surrounds the plurality of nozzles by moving relatively with respect to the discharge surface in a direction of coming in and out of contact with the discharge surface, and the frame-shaped wall portion A suction means connected to the inside of the cap via a suction port formed in the cap, and an absorbing member which is disposed at a position surrounded by the frame-like wall and which can absorb liquid, the frame a member that will be disposed in a position surrounded by the like wall section, has a base extending along the inner end surface of the frame-shaped wall portion, and a plate-shaped member provided above the suction port to the inside of the base, the provided on the base, a first surface facing said predetermined direction, said base Provided, a second surface facing away from the predetermined direction, provided on said base, facing the inner end face of the frame-like wall portion, the connecting the second surface and the first surface Three surfaces, a fourth surface provided on the base , facing the absorbing member, and connecting between the first surface and the second surface, and between the third surface and the fourth surface A first recess recessed in the first surface toward the second surface, and a second recess recessed in the third surface toward the fourth surface, between the first surface and the second surface A recess including at least one of the recess and an inclined surface connected to the first surface and extending in the predetermined direction in a third direction from the third surface to the fourth surface It features.
The printing apparatus according to the second aspect of the present invention is provided on the plate-like member, and is provided on a first surface facing the predetermined direction, and provided on the plate-like member, and is a second surface facing the opposite direction to the predetermined direction. And a third surface provided on the plate-like member, facing the inner end face of the frame-like wall, and connecting the first surface and the second surface, and provided on the plate-like member, A fourth surface facing the absorbing member and connecting the first surface and the second surface, and between the third surface and the fourth surface, the second surface being the first surface And a recess including at least one of a first recess recessed toward the fourth surface and a second recess recessed toward the fourth surface on the third surface across the first surface and the second surface. An insertion hole is formed in a central portion of the absorbing member, through which a cylindrical protrusion of the holding member for holding the cap is inserted, and the inner end surface is formed. Made is characterized by comprising a groove which is recessed in a direction away from the axis of the insertion hole.

  According to the above configuration, even if the suction unit is driven after the frame-like wall of the cap contacts the ejection surface of the head, the plate-like member is a frame-like wall formed of an elastic member Regulate the inward deformation of Therefore, the printing apparatus can more easily ensure the airtightness inside the cap at the time of purge. In addition, in a state where the frame-like wall portion is separated from the ejection surface, when the suction unit is driven to suction a droplet generated on the absorbing member, an air flow is generated toward the suction port via the concave portion. As a result, the degree of suction unevenness in the absorbing member is reduced. Thus, the printing apparatus is likely to uniformly suck drops generated inside the cap.

FIG. 1 is a perspective view of a printing apparatus 1; FIG. 2 is a perspective view of a first head unit 10; 5 is a schematic view of a maintenance mechanism 30. FIG. 5 is a plan view of the maintenance mechanism 30. FIG. It is sectional drawing of the holding member 35 and the cap 40 in the AA arrow direction of FIG. It is sectional drawing of the holding member 35 and the cap 40 in the BB line arrowhead direction of FIG. FIG. 6 is a perspective view of a plate member 50. It is a sectional view of cap 40 which seals discharge side 11A. It is sectional drawing of the head 11 in which purge is performed. FIG. 6 is a cross-sectional view in which an air flow is generated inside the cap 40. It is sectional drawing of the 2nd recessed part 81 in the CC line arrowhead direction of FIG.

  Embodiments of the present invention will be described with reference to the drawings. The schematic configuration of the printing apparatus 1 will be described with reference to FIG. Upper, lower, lower right, upper left, lower left, and upper right in FIG. 1 are upper, lower, right, left, front, and rear of the printing apparatus 1, respectively.

  The printing apparatus 1 is an ink jet printer that performs printing by discharging liquid ink on the surface of a cloth (not shown) such as a T-shirt that is a printing medium. The printing apparatus 1 prints a color image on a medium to be printed by discharging five different inks (white, black, cyan, magenta, and yellow inks) downward. In the following description, five types of ink are collectively referred to as ink, white ink as white ink, and four colors of black, cyan, magenta, and yellow as color ink. The ink contains a binder resin so that the printed fabric can exhibit high wash fastness. The white ink contains, for example, titanium oxide as a pigment. Titanium oxide is an inorganic pigment with a relatively high specific gravity and has high sedimentation. Thus, the white ink is a liquid containing a component having higher sedimentation than the component contained in the color ink.

  The white ink is ejected, for example, as a base when printing an image on a fabric having a dark ground color, before printing with color ink. Depending on the print image, the color ink may not necessarily be ejected after the white ink is ejected.

  As shown in FIG. 1, the printing apparatus 1 includes a housing 2, a platen mechanism 3, a carriage 15, a maintenance mechanism 30 (see FIG. 3), and the like. An opening 2A communicating with the inside of the housing 2 is provided on the front surface of the housing 2.

  The platen mechanism 3 is a mechanism for conveying the cloth (not shown) in the front-rear direction, and is provided inside the housing 2. The platen mechanism 3 includes a base 6, a tray 4, a platen 5 and the like. The base 6 has a substantially box shape extending in the front-rear direction through the opening 2A. Inside the base 6, a pair of rails (not shown) extending in the front-rear direction are provided.

  The tray 4 is a substantially rectangular plate provided in the upper side of the base 6 in a plan view. The tray 4 is movable along a pair of rails in accordance with driving of a platen drive motor (not shown). The platen 5 is a substantially rectangular plate in a plan view supported by a support (not shown) erected upward from the rear end of the tray 4. On the upper surface of the platen 5, a portion of the fabric to be printed (for example, the front body of a T-shirt etc.) can be placed, and on the upper surface of the tray 4 a portion of the fabric not to be printed (for example T It is possible to place the shirt sleeves etc.). The platen 5 is movable along with the tray 4 along a pair of rails.

  A guide rail and a guide shaft (not shown) are provided at the upper end of the housing 2. The guide rail is a rectangular parallelepiped member that protrudes from the rear to the front. The guide shaft is provided forward and extends in the left-right direction.

  The carriage 15 is provided on the upper side of the platen mechanism 3 so as to be reciprocally movable in the left-right direction along the guide rail and the guide shaft. The carriage 15 moves with the drive of a carriage drive motor (not shown). When the printing apparatus 1 does not perform the printing operation, the carriage 15 is disposed at the leftmost position on the movable area (hereinafter, referred to as a standby position). The carriage 15 shown in FIG. 1 is located at the standby position. On the carriage 15, a first head unit 10 for ejecting white ink and a second head unit 20 for ejecting color ink are provided side by side in the front-rear direction. The first head unit 10 is located behind the second head unit 20.

  The first head unit 10 shown in FIG. 2 is connected to four main tanks (not shown) for storing white ink via four white ink supply tubes (not shown). The first head unit 10 has a head 11 formed in a plate shape. The head 11 has a discharge surface 11A facing downward. Nozzle arrays 121 to 124 are formed on the ejection surface 11A. The nozzle arrays 121 to 124 are arranged in order at intervals from the left to the right. The nozzle arrays 121 to 124 each have a plurality of nozzle arrays. Each nozzle row has a plurality of rows of nozzles 111 aligned in the front-rear direction on the ejection surface 11A. The white inks stored in the four main tanks are respectively supplied to the nozzle arrays 121 to 124 of the first head unit 10 via the four white ink supply tubes.

  The second head unit 20 has the same configuration as the first head unit 10. That is, the second head unit 20 has the head 11. The second head unit 20 is connected to four main tanks (not shown) via four color ink supply tubes (not shown). Different color inks are stored in the four main tanks. Different color inks are supplied to the nozzle arrays 121 to 124 formed on the ejection surface 11A of the second head unit 20, respectively.

  The maintenance mechanism 30 will be described with reference to FIGS. 3 to 7. In FIG. 3, illustration of the below-mentioned holding member 35 shown in FIG. 4 and the plate-like members 50 and 80 is abbreviate | omitted. In FIG. 3, the first head unit 10 of the carriage 15 in the standby position is illustrated. The maintenance mechanism 30 is a mechanism that performs a maintenance operation on each of the first head unit 10 and the second head unit 20. Hereinafter, among the configurations of the maintenance mechanism 30, a configuration for performing maintenance on the first head unit 10 will be described.

  Maintenance operations include capping, purging, empty suction, and cleaning. Capping is an operation of sealing the ejection surface 11A (see FIG. 2) by the cap 40. The purge is an operation of sucking the ink from the ejection surface 11A (see FIG. 2). The empty suction is an operation of suctioning the liquid held by the cap 40 (see FIG. 3) by the suction unit 29. The liquid held by the cap 40 is, for example, a liquid such as an ink and a cleaning liquid 22A (see FIG. 3). The washing is an operation in which the liquid held by the cap 40 is flushed out by the washing liquid 22A.

  As shown in FIG. 3, the maintenance mechanism 30 includes a suction unit 29 and a holding member 35. The suction unit 29 is provided below the standby position of the carriage 15 (see FIG. 1). The suction unit 29 is, for example, a known tube pump suction pump, and is connected to the waste liquid tank 16.

  The holding member 35 is provided above the suction portion 29 and below the standby position of the carriage 15. The holding member 35 has a substantially box shape opening upward. The holding member 35 is movable in the vertical direction along with the driving of the vertical movement motor 21 provided inside the housing 2 (see FIG. 1).

  As shown in FIGS. 4 and 6, the holding member 35 includes a holding wall portion 36, a right suction path 31, a left suction path 32, a right washing path 33, a left washing path 34, and a cylindrical protrusion 39.

  The holding wall portion 36 has a substantially rectangular shape extending in the front-rear direction and the left-right direction in plan view. The right suction path 31 and the left suction path 32 are provided at the front of the holding wall portion 36. The right suction path 31 is provided on the right side of the holding wall portion 36, and the left suction path 32 is provided on the left side of the holding wall portion 36. The right suction path 31 and the left suction path 32 have a cylindrical shape penetrating the holding wall portion 36 in the vertical direction. The right suction path 31 and the left suction path 32 are connected to the suction unit 29 via the right tube 23 (see FIG. 3) and the left tube 24 (see FIG. 3), respectively. The right tube 23 and the left tube 24 are each provided with a first valve (not shown). The first valve is electrically connected to a control unit (not shown) provided inside the housing 2. The control unit switches the first valve between the open state and the shut off state. In the right tube 23, when the corresponding first valve is opened, the right suction passage 31 and the suction unit 29 communicate with each other, and when the corresponding first valve is closed, the right suction passage 31 and the suction unit 29 Communication is interrupted. Similarly, in the left tube 24 as well, the corresponding first valve is switched between the open state and the shut-off state by the control unit, whereby the communication state between the left suction passage 32 and the suction unit 29 is switched.

  As shown in FIGS. 4 and 5, the right washing path 33 and the left washing path 34 are provided at the rear of the holding wall portion 36. The right washing path 33 is provided on the right of the holding wall 36, and the left washing path 34 is provided on the left of the holding wall 36. The right washing path 33 and the left washing path 34 have a cylindrical shape penetrating the holding wall portion 36 in the vertical direction. The right washing passage 33 is located behind the right suction passage 31, and the left washing passage 34 is located behind the left suction passage 32. The right washing passage 33 and the left washing passage 34 are connected to the washing solution tank 22 (see FIG. 3) via the right washing tube 25 (see FIG. 3) and the left washing tube 26 (see FIG. 3), respectively. The cleaning solution tank 22 stores a cleaning solution 22A used for cleaning the maintenance mechanism 30.

  The right washing tube 25 and the left washing tube 26 are each provided with a second valve (not shown). The second valve is electrically connected to the control unit (not shown) described above. The control unit switches the second valve between the open state and the shut off state. In the right washing tube 25, when the corresponding second valve is opened, the right washing passage 33 and the washing solution tank 22 communicate with each other, and when the corresponding second valve is closed, the right washing passage 33 and the washing solution tank 22 Communication is blocked. Similarly, also in the left cleaning tube 26, the corresponding second valve is switched to the open state and the blocking state by the control unit, so that the communication state between the left cleaning path 34 and the cleaning liquid tank 22 is switched.

  As shown in FIGS. 4 and 5, the cylindrical protrusion 39 protrudes upward from the holding wall 36 between the right suction passage 31 and the right washing passage 33. The axis 39A of the cylindrical protrusion 39 extends in the vertical direction. A groove 39B recessed toward the axis 39A is formed on the circumferential surface of the upper end of the cylindrical projection 39. The groove 39B is formed on the circumferential surface of the cylindrical projection 39 over the circumferential direction based on the axis 39A. A retaining ring 28 is provided in the groove 39B.

  The cap 40 is held inside the holding member 35. The cap 40 has a substantially box shape opening upward. The cap 40 is formed of a rubber material which is an example of an elastic body. The cap 40 comprises a bottom wall 41 and a contact wall 47. The bottom wall portion 41 is a wall portion held by the holding wall portion 36 of the holding member 35. The shape of the bottom wall portion 41 is a substantially rectangular shape extending in the front-rear direction and the left-right direction in a plan view.

  The bottom wall portion 41 is provided with a hole corresponding to each of the right suction passage 31, the left suction passage 32, the right washing passage 33, the left washing passage 34, and the cylindrical protrusion 39. The right washing passage 33, the left washing passage 34, and the cylindrical protrusion 39 project upward through the hole of the bottom wall 41. The holes of the bottom wall portion 41 corresponding to the right suction path 31 and the left suction path 32 are suction ports 42A and 42B, respectively. The hole of the bottom wall 41 corresponding to the cylindrical protrusion 39 is a hole 42C. The cylindrical protrusion 39 is fitted in the hole 42C. The hole 42C is smaller than the retaining ring 28 in a plan view. Accordingly, the cap 40 is restricted by the retaining ring 28 from moving the holding member 35 outward. The cylindrical protrusion 39 may be fitted into the hole 42C via a spacer (not shown) formed in a cylindrical shape.

  The contact wall 47 is a wall extending upward from the bottom wall 41. The upper end of the contact wall 47 is tapered toward the top. The upper end portion of the contact wall portion 47 is capable of coming into and coming out of contact with the discharge surface 11A of the first head unit 10 by the holding member 35 moving up and down with the drive of the vertical movement motor 21 (see FIG. 3). . That is, the contact wall 47 is a so-called cap lip.

  As shown in FIG. 4, the contact wall 47 includes a peripheral wall 42 and a partition 45. The circumferential wall portion 42 extends upward from the circumferential end of the bottom wall portion 41 (see FIG. 5). The shape of the peripheral wall portion 42 is rectangular and frame-shaped in plan view. The upper end portion of the peripheral wall portion 42 can be brought into contact with or separated from the peripheral end portion of the ejection surface 11A (see FIG. 2) of the first head unit 10. The partition wall 45 extends in the front-rear direction, passing between the right suction passage 31 and the left suction passage 32 and between the right washing passage 33 and the left washing passage 34. The partition wall 45 is connected to the peripheral wall 42. Therefore, the dividing wall 45 divides the space inside the cap 40 surrounded by the bottom wall 41 and the peripheral wall 42 into two. Further, the upper end portion of the partition wall portion 45 is capable of coming into and coming out of contact with a portion of the discharge surface 11A of the first head unit 10 between the nozzle array 121 and the nozzle array 122 shown in FIG. .

  Hereinafter, the space inside the cap 40 on the right side of the partition wall 45 is referred to as the right space 40A (see FIG. 3), and the space inside the cap 40 on the left side of the partition wall 45 is the left space 40B (see FIG. See 3). That is, the right space 40A is below the nozzle arrays 122 to 124 of the first head unit 10, and the left space 40B is below the nozzle array 121.

  In the contact wall portion 47, a portion surrounding the right space 40A is referred to as a first frame-shaped wall portion 47A, and a portion surrounding the left space 40B is referred to as a second frame-shaped wall portion 47B. The first frame-shaped wall 47A and the second frame-shaped wall 47B extend upward from the bottom wall 41. The shapes of the first frame-shaped wall 47A and the second frame-shaped wall 47B are respectively rectangular and frame-shaped in plan view. The first frame-shaped wall portion 47A surrounds the right suction path 31, the suction port 42A, and the right washing path 33, and the second frame-shaped wall portion 47B includes the left suction path 32, the suction port 42B, and the left washing path 34. Surround. The inner end surface of the first frame-shaped wall 47A is referred to as a first inner end surface 47C (see FIG. 6), and the inner end of the second frame-shaped wall 47B is referred to as a second inner end surface 47D (see FIG. 6). ). The first groove portion 91 (see FIG. 6) is formed in the lower portion of the first inner end surface 47C, and the second groove portion 92 (see FIG. 6) is formed in the lower portion of the second inner end surface 47D. The first groove 91 is recessed in a direction away from the axis 39A. That is, the lower side of the right space 40A is wider. The second groove 92 is also formed in the same manner as the first groove 91, and the left space 40B is wider at the lower side. In addition, in FIG. 2, when the contact wall 47 contacts the discharge surface 11A of the first head unit 10, the first frame-shaped wall 47A and the second frame-shaped wall 47B are schematically shown by a two-dot chain line. Shown. When the contact wall portion 47 contacts the ejection surface 11A, the first frame-shaped wall portion 47A surrounds the nozzle array 122 to 124, and the second frame-shaped wall portion 47B surrounds the nozzle array 121.

  As shown in FIGS. 4 and 6, the absorbing member 48 is accommodated in the right space 40A, and the absorbing member 49 is accommodated in the left space 40B. The absorbing member 48 is placed on the bottom wall 41 of the cap 40 at a position surrounded by the first frame-shaped wall 47A, and the absorbing member 49 is surrounded by a second frame-shaped wall 47B, It is placed on the bottom wall 41. The shape of the absorbing members 48 and 49 is a substantially rectangular shape extending in the front-rear direction in a plan view. The absorbing members 48 and 49 respectively cover the right suction path 31 and the left suction path 32 of the holding member 35 from above. The absorbing members 48 and 49 are members capable of holding a liquid, such as a sponge, for example. The absorbing members 48 and 49 respectively absorb the liquid such as the cleaning liquid 22A for maintaining the humidity of the right space 40A and the left space 40B. The absorption member 48 is formed with an exposure hole 48A for exposing the right washing path 33 upward, and the absorption member 49 is formed with an exposure hole 49A for exposing the left washing path 34 upward. In the central portion of the absorbing member 48, an insertion hole 48B through which the cylindrical protrusion 39 of the holding member 35 is inserted is formed. The insertion hole 48B is located above the hole 42C of the cap 40. The insertion hole 48B accommodates the retaining ring 28 inside.

  A plate-like member 50 is provided between the first frame-like wall 47A and the absorbing member 48, and a plate-like member 80 is provided between the second frame-like wall 47B and the absorbing member 49. The plate-like members 50 and 80 are plate-like members having a thickness in the vertical direction. The plate-like members 50 and 80 of this example are formed of a resin material. That is, the hardness of the material forming the plate-like members 50 and 80 is higher than the hardness of the material forming the cap 40. Since the plate members 50 and 80 have configurations similar to each other, the configuration of the plate member 50 will be described in detail below, and the configuration of the plate member 80 will be simplified and described.

  As shown in FIGS. 4 and 7, the plate-like member 50 includes a base 51. The base 51 is surrounded by the first frame-shaped wall 47A and disposed at a position facing the circumferential surface of the absorbing member 48. More specifically, the base 51 extends along the first inner end surface 47C of the first frame-shaped wall 47A, and divides the first inner end surface 47C and the absorbing member 48 from each other. The base 51 is a frame that is rectangular in plan view. Further, the center positions of the pair of diagonals of the base 51 substantially coincide with the axis 39A of the holding member 35 in a plan view. That is, the shape of the base 51 is a frame that is point-symmetrical with respect to the axis 39A.

  As shown in FIG. 7, the base 51 is provided with a first surface 51A, a second surface 51B, a third surface 51C, and a fourth surface 51D. The first surface 51 </ b> A is a surface of the surface of the base 51 facing downward. The second surface 51 </ b> B is a surface facing upward in the surface of the base 51. The third surface 51C is a surface facing the first inner end surface 47C of the first frame-shaped wall 47A (see FIG. 4) in the surface of the base 51, and connects the first surface 51A and the second surface 51B. Do. The fourth surface 51D is a surface facing the circumferential surface of the absorbing member 48 (see FIG. 4), and connects the first surface 51A and the second surface 51B. The fourth surface 51D is located on the side opposite to the first inner end surface 47C of the first frame-shaped wall 47A with respect to the third surface 51C.

  The base 51 is formed of a pair of longitudinal wall portions 52 and a pair of short side wall portions 62. The pair of longitudinal wall portions 52 is a wall portion extending in the front-rear direction. The pair of longitudinal wall portions 52 face each other in the left-right direction with an interval. The pair of short wall portions 62 are wall portions extending in the left-right direction. The pair of short wall portions 62 face each other in the front-rear direction with an interval. The length of the short wall 62 in the left-right direction is shorter than the length of the longitudinal wall 52 in the front-rear direction. In this example, the pair of longitudinal wall portions 52 and the pair of short side wall portions 62 are integrally formed with each other.

  Hereinafter, in the first surface 51A of the base 51, a portion to be the surface of the longitudinal wall 52 is referred to as a lower end surface 52A, and a portion to be the surface of the short wall 62 is referred to as a lower end surface 62A. Further, in the second surface 51B of the base 51, a portion to be the surface of the longitudinal wall 52 is called an upper end surface 52B, and a portion to be the surface of the short wall 62 is called an upper end surface 62B. Further, in the third surface 51C of the base 51, a portion to be a surface of the longitudinal wall 52 is called an outer end surface 52C, and a portion to be a surface of the short wall 62 is called an outer end surface 62C. Further, in the fourth surface 51D of the base 51, a portion to be the surface of the longitudinal wall 52 is called an inner end face 52D, and a portion to be the surface of the short wall 62 is called an inner end face 62D.

  The longitudinal wall 52 has a first wall 53 and a first projection 57. The first wall 53 is provided between the first frame-shaped wall 47A and the absorbing member 48 (see FIG. 4). The first wall 53 faces the first inner end surface 47C of the first frame-shaped wall 47A.

  The first protrusion 57 protrudes from the upper end of the first wall 53 in the direction from the outer end surface 52C to the inner end surface 52D. The first projecting portion 57 is right above the end of the absorbing member 48 in the left-right direction and below the upper end of the contact wall 47 (see FIG. 4) of the cap 40. In addition, when the first head unit 10 is in the standby position, the first protrusion 57 is the nozzle row at the left end of the nozzle array 122 (see FIG. 2) or the nozzle at the right end of the nozzle array 124 (see FIG. 2). It may be below the row. A plurality of specific recesses 58 are provided in the first protrusion 57 side by side in the front-rear direction. The specific recess 58 is recessed toward the lower end surface 52A on the upper end surface 52B of the longitudinal wall 52. In the bottom wall portion of the specific recess 58, a hole 58A penetrating the first projecting portion 57 in the vertical direction is formed. The shape of the hole 58A is a rectangular shape that is long in the front-rear direction in plan view (see FIG. 4). The hole 58A exposes the absorbing member 48 located below the first protrusion 57 upward (see FIG. 8).

  The short side wall 62 has a second wall 63 and a second protrusion 67. The second wall 63 is provided between the first frame-shaped wall 47A (see FIG. 4) and the absorbing member 48 (see FIG. 4). The second wall 63 faces the first inner end surface 47C of the first frame-shaped wall 47A. The second projecting portion 67 protrudes from the upper end portion of the second wall portion 63 in a direction from the outer end surface 62C of the short wall portion 62 toward the inner end surface 62D.

  The second protrusion 67 is directly above the end of the absorbing member 48 (see FIG. 4) in the front-rear direction, and is lower than the upper end of the contact wall 47 (see FIG. 4) of the cap 40. . At both end portions in the left-right direction of the second projecting portion 67, specific concave portions 68 are provided. The specific recess 68 is recessed toward the lower end surface 62A at the upper end surface 62B of the short wall portion 62. In the bottom wall portion of the specific recess 68, a hole 68A (see FIG. 4) penetrating the second protrusion 67 in the vertical direction is formed. The shape of the hole 68A is a rectangular shape that is long in the left-right direction in plan view (see FIG. 4). The hole 68A exposes the absorbing member 48 located below the second protrusion 67 upward (see FIG. 4).

  An exposed concave portion 69 is provided at a central portion in the left-right direction of the second projecting portion 67. The exposed recess 69 is located between the two holes 68A in the left-right direction. The exposed recess 69 is recessed toward the outer end surface 62C at the end of the second protrusion 67 in the direction from the outer end surface 62C to the inner end surface 62D. The exposed recess 69 exposes the end of the absorbing member 48 in the front-rear direction upward.

  With reference to FIG. 7, the recessed part 100 provided in the base 51 of the plate-shaped member 50 is demonstrated. The recess 100 includes, as an example, first recesses 71 and 72 and second recesses 81 to 84. The first recess 71 is formed in one of the pair of short wall portions 62, and the first recess 72 is formed in the other of the pair of short wall portions 62. The shapes of the first recesses 71 and 72 are the same as each other. The first recesses 71 and 72 are recessed toward the upper end surface 62B at the lower end surface 62A, respectively, between the outer end surface 62C and the inner end surface 62D of the short wall portion 62. The first recesses 71 and 72 are located in point symmetry with each other with respect to the axis 39A (see FIG. 4).

  The inner surfaces of the first recesses 71 and 72 are each formed by a pair of opposing surfaces 75 and a bottom wall surface 76. The pair of facing surfaces 75 are surfaces facing each other with a space in the left-right direction, and are connected to the lower end surface 62A and the inner end surface 62D of the short wall portion 62. The opposing surface 75 is formed in a substantially L-shape in left side view. The bottom wall surface 76 connects the pair of opposing surfaces 75 to each other.

  The second recesses 81 and 82 are formed in one of the pair of longitudinal walls 52, and the second recesses 83 and 84 are formed in the other of the pair of longitudinal walls 52. In the present example, the shapes of the second recesses 81 to 84 are the same as one another. The second recesses 81 to 84 are respectively recessed toward the inner end surface 52D at the outer end surface 52C from the lower end surface 52A of the longitudinal wall 52 to the upper end surface 52B.

  The second recesses 81 and 82 are provided side by side in the front-rear direction with the plurality of specific recesses 58 interposed therebetween. That is, the second recesses 81 and 82 are respectively provided at two positions different in distance from the suction port 42A (see FIG. 4) of the cap 40. In the plate-like member 50 shown in FIG. 4, the separation distance between the second recess 81 and the suction port 42A is shorter than the separation distance between the second recess 82 and the suction port 42A.

  Similarly, the second recesses 83 and 84 are provided side by side in the front-rear direction with the plurality of specific recesses 58 interposed therebetween. The second recess 83 is in the same left-right direction position as the second recess 81, and the second recess 84 is in the same left-right direction position as the second recess 82. Hereinafter, in the space surrounded by the plate-like member 50, a region between the second recesses 81 and 83 is referred to as a first region 43 (see FIG. 4) and a region between the second recesses 82 and 84. Is referred to as a second area 44 (see FIG. 4). In FIG. 4, the first area 43 is located closer to the suction port 42 </ b> A than the second area 44.

  The second recesses 81 and 84 are located in point symmetry with each other with respect to the axis 39A. In other words, the position of the second recess 81 formed in one of the pair of longitudinal walls 52 and the position of the second recess 84 formed in the other of the pair of longitudinal walls 52 are symmetrical to each other. Similarly, the second recesses 82 and 83 are located in point symmetry with each other with respect to the axis 39A. The position of the second recess 82 formed in one of the pair of longitudinal walls 52 and the position of the second recess 83 formed in the other of the pair of longitudinal walls 52 are symmetrical to each other.

  The inner surfaces of the second recesses 81 to 84 are formed by the pair of extending surfaces 85 and the bottom surface 86, respectively. The pair of extending surfaces 85 respectively extend from the outer end surface 52C of the longitudinal wall 52 toward the inner end surface 52D. The pair of extending surfaces 85 are inclined so as to be closer to each other toward the inner end surface 52D. The bottom surface 86 connects the pair of extending surfaces 85 to each other. The bottom surface 86 includes an extending surface 86A and an inclined surface 86B (see FIG. 11).

  As shown in FIG. 11, the extending surface 86 </ b> A extends downward from the upper end surface 52 </ b> B of the longitudinal wall 52. The extending surface 86A may extend in parallel with the vertical direction, or may be inclined with respect to the vertical direction. The inclined surface 86B connects the extending surface 86A and the lower end surface 52A. The inclined surface 86B extends downward from the lower end of the extending surface 86A. The inclined surface 86B extends from the outer end surface 52C of the longitudinal wall 52 to the inner end surface 52D as it extends downward.

  The depth of the second recess 81 shown in FIG. 7 is indicated by the dimension H1. The depth of the second recess 81 is, for example, the shortest distance between a portion of the bottom surface 86 of the second recess 81 closest to the inner end face 52D of the longitudinal wall 52 and the outer end face 52C of the longitudinal wall 52 Say The depth of each of the second recesses 82-84 is also defined by the same definition as the depth of the second recess 81. Also, the depth of the second recess 82 is indicated by the dimension H2. The dimensions H1 and H2 are the same as each other.

  The outline of the configuration of the plate member 80 will be described with reference to FIG. The plate member 80 includes a base 87. The base 87 is surrounded by the second frame-like wall 47 B and disposed at a position facing the circumferential surface of the absorbing member 49. More specifically, the base portion 87 extends along the second inner end surface 47D of the second frame-shaped wall 47B, and partitions the second inner end surface 47D and the absorbing member 49 from each other. The base 87 is formed by a pair of longitudinal walls 88 and a pair of short walls 89. The longitudinal wall 88 extends in the longitudinal direction, and the short wall 89 extends in the lateral direction. The shape of the longitudinal wall 88 is the same as the longitudinal wall 52 of the plate member 50. That is, the longitudinal wall portion 88 is provided with a plurality of specific concave portions 58 and second concave portions 81 to 84. On the other hand, the short side wall 89 is shorter than the short side wall 62 in the left-right direction. In the short wall portion 89, while the first recesses 71 and 72 are provided, neither the specified recess 68 nor the exposed recess 69 is provided.

  The operation of the maintenance mechanism 30 capping the ejection surface 11A of the first head unit 10 will be described with reference to FIGS. 3 and 8. 8 and 9 schematically illustrate a cross section in the direction of the arrows and the arrows in FIG. Before the maintenance mechanism 30 performs capping, the carriage 15 is in the standby position (see FIG. 1), and the contact wall 47 of the cap 40 is spaced downward from the ejection surface 11A (see FIG. 3). Both the valve and the second valve are in the closed state.

  By driving the vertical movement motor 21, the holding member 35 moves upward (in the direction of the arrow K in FIG. 3). As the holding member 35 moves, the cap 40 moves toward the discharge surface 11A. In other words, the cap 40 moves relative to the ejection surface 11A. As a result, the contact wall 47 of the cap 40 contacts the ejection surface 11A of the first head unit 10 (see FIG. 8). The upper end portion of the contact wall portion 47 in contact with the ejection surface 11A is elastically deformed downward and is in close contact with the ejection surface 11A. The first frame-shaped wall 47A surrounds the nozzle array 122 to 124 (see FIG. 2), and the second frame-shaped wall 47B surrounds the nozzle array 121. The ejection surface 11A is sealed, and the maintenance mechanism 30 ends the capping.

  In the state where the discharge surface 11A is sealed, moisture is directed upward from each of the absorbing members 48 and 49 that have absorbed the liquid. The direction in which the arrow L shown in FIG. 8 is an example of the direction in which the moisture is directed in the right space 40A. In the right space 40A, it is surrounded by the first protrusions 57 (see FIG. 7) of the pair of longitudinal walls 52 and the second protrusions 67 (see FIG. 7) of the pair of short side walls 62. The moisture travels toward the discharge surface 11A through the space to be exposed, the exposed concave portion 69, the plurality of holes 58A, and the plurality of holes 68A.

  In particular, the nozzle array at the left end of the nozzle array 122 (see FIG. 2) is adjacent to the top of the first projection 57 of the longitudinal wall 52 on the left side, and the nozzle array at the right end of the nozzle array 124 (see FIG. 2) Is close to the upper side of the first protrusion 57 of the longitudinal wall 52 which is on the right. Thus, the moisture is easily spread across the plurality of nozzles 111 in the nozzle row forming the left end of the nozzle array 122 through the plurality of holes 58A formed in the left longitudinal wall 52 in the front-rear direction. Become. Similarly, moisture is easily spread across the plurality of nozzles 111 in the nozzle row forming the right end of the nozzle array 124 through the plurality of holes 58A formed in the longitudinal wall 52 on the right side in the front-rear direction Become.

  As the moisture travels to the discharge surface 11A, the nozzle arrays 122 to 124 become difficult to dry. Therefore, the printing apparatus 1 can reduce the possibility that the meniscus of the white ink formed on the nozzles 111 of the nozzle arrays 122 to 124 is solidified. Therefore, the printing apparatus 1 can not easily cause a problem that the white ink is not discharged from the nozzle arrays 122 to 124. Similarly, also in the left space 40B, the printing device 1 can make it difficult to dry the nozzle array 121.

  In this example, the white ink is more likely to fail to discharge than the color ink. However, when the printing apparatus 1 performs capping, the possibility that the white ink is not ejected due to the moisture generated from the absorbing members 48 and 49 is reduced.

  With reference to FIG. 3 and FIG. 9, the purge which the maintenance mechanism 30 performs with respect to the nozzle arrangement 122-124 is demonstrated. Before the maintenance mechanism 30 executes the purge, the contact wall portion 47 of the cap 40 is in close contact with the discharge surface 11A of the first head unit 10, and both the first valve and the second valve are in the closed state It is in.

  Among the first valves provided in each of the right tube 23 and the left tube 24, the first valve of the right tube 23 is switched from the blocking state to the opening state by the control unit (not shown). The suction unit 29 is driven, and the pressure in the right space 40A of the cap 40 decreases. Thus, the white ink is discharged from each nozzle 111 of the nozzle array 122 (see FIG. 2) (see FIG. 9). The discharged white ink is absorbed by the absorbing member 48. After the white ink is discharged from the nozzles 111, the second valve of the right washing tube 25 is switched from the blocking state to the opening state by the control unit (not shown). Thus, the cleaning liquid 22A flows into the right space 40A through the right cleaning tube 25 and the right cleaning path 33, and is then discharged toward the waste liquid tank 16 through the right suction path 31. The second valve is switched from the open state to the shut off state by the control unit. Thereafter, the vertical movement motor 21 is driven to move the holding member 35 downward. Thereby, the contact wall 47 of the cap 40 is separated downward from the discharge surface 11A of the first head unit 10. The maintenance mechanism 30 ends the purge.

  When the suction unit 29 is driven, the pressure of the right space 40A of the cap 40 is lower than the atmospheric pressure, whereby the first frame-shaped wall 47A is biased inward. The direction in which the arrow M shown in FIG. 9 is an example of the direction in which the first frame-like wall 47A is biased. The hardness of the plate-like member 50 is higher than the hardness of the first frame-like wall 47A, and the plate-like member 50 faces the first inner end face 47C of the first frame-like wall 47A. Therefore, the inward deformation of the first frame-like wall 47A is restricted by the plate member 50. Therefore, the first frame-shaped wall 47A that deforms inward is less likely to be separated from the ejection surface 11A. Therefore, the printing apparatus 1 can maintain the sealed state of the right space 40A of the cap 40 more accurately even when performing the purge.

  Further, in the present example, when the pressure in the right space 40A is lower than the atmospheric pressure, the bottom wall portion 41 located below the right space 40A is urged inward. The direction in which the arrow Q shown in FIG. 9 faces is an example of the direction in which the bottom wall portion 41 is biased. The plate-like member 50 is easily lifted upward from the bottom wall portion 41 by the inward deformation of the bottom wall portion 41 located below the right space 40A. When the pressure in the right space 40A returns to the pressure before the purge is performed, the bottom wall portion 41 which has been deformed returns to the original shape. At this time, the plate member 50 may be maintained in a floating state from the bottom wall portion 41 or may be lowered to a position contacting the bottom wall portion 41.

  Although the detailed description is omitted, the purge that the maintenance mechanism 30 performs on the nozzle array 121 is the same as the purge that performs on the nozzle arrays 122 to 124 described above. That is, after the first valve provided on the left tube 24 (see FIG. 3) is switched to the open state, the suction unit 29 is driven. As the pressure in the left space 40B decreases, the white ink is discharged from the nozzle array 121. In this case, the second frame-shaped wall portion 47B and the bottom wall portion 41 located below the left space 40B are biased inward. The second frame-shaped wall portion 47B is restricted by the plate member 80 from being deformed inward. On the other hand, the plate-like member 80 is lifted from the bottom wall 41 by the inward deformation of the biased bottom wall 41. The direction in which the arrow N shown in FIG. 9 is directed is an example of the direction in which the second frame-shaped wall 47B is biased, and the direction in which the arrow R is directed is a bottom wall 41 located below the left space 40B. Is an example of the direction in which it is urged.

  The operation of the maintenance mechanism 30 to perform the idle suction will be described with reference to FIGS. 4, 7, 10, and 11. After performing the purge, the maintenance mechanism 30 performs an empty suction. FIG. 10 schematically illustrates a cross section in the arrow direction of the line AA of FIG. 4. Moreover, in FIG.10 and FIG.11, the state which the plate-shaped member 50 contacts the bottom wall part 41 is illustrated as an example. In the following, as an example of the empty suction operation, empty suction for suctioning a droplet remaining on the absorbing member 48 will be described. The droplets remaining on the absorbing member 48 may be, for example, droplets of white ink, droplets of the cleaning liquid 22A, and the like. Before the maintenance mechanism 30 performs idle suction, the first valve and the second valve are both in the closed state.

  The second valve of the right tube 23 (see FIG. 3) is switched from the blocking state to the opening state by the control unit (not shown). Thereafter, as the suction unit 29 is driven, an air flow toward the suction port 42A is generated in the right space 40A of the cap 40. The direction in which the arrow P shown in FIGS. 4, 7, 10, and 11 faces indicates an example of the direction of the air flow generated inside the right space 40A. The droplets absorbed by the absorbing member 48 travel toward the right suction path 31 via the suction port 42A by the air flow generated inside the right space 40A. The droplets moved to the right suction path 31 are sucked by the suction unit 29 via the right tube 23 (see FIG. 3) and then discharged to the waste liquid tank 16 (see FIG. 3).

  The air flow generated inside the right space 40A includes the first air flow, the second air flow, and the third air flow. The first air flow is an air flow generated inside the first recesses 71 and 72, and is an air flow directed to the right suction path 31 via the first recesses 71 and 72 (see FIGS. 4 and 10). The second air flow is an air flow generated inside the second recesses 81 to 84, and is an air flow directed to the right suction path 31 via the second recesses 81 to 84 (see FIGS. 4 and 11). The third air flow is an air flow generated inside 81 to 84 of the second concave portion, and the first groove portion 91 (see FIGS. 5 and 6) of the first frame-shaped wall portion 47A and the first concave portion 71 The air flow toward the right suction path 31 via the two in order (see FIG. 7). Therefore, in the right space 40A, the possibility that the air flow is biased to a specific region is lower than in the case where the concave portion 100 is not formed in the plate member 50.

  The second air flow is likely to be generated when the plate member 50 is maintained in a floating state from the bottom wall portion 41. Further, even when the plate member 50 is in contact with the bottom wall portion 41, the plate member 50 once floats or bends from the bottom wall portion 41 as the maintenance mechanism 30 purges. Thereby, a slight gap is likely to be generated between the bottom wall portion 41 and the second concave portions 81 to 84. Therefore, even when the plate member 50 is in contact with the bottom wall portion 41, the second air flow is generated. When the plate member 50 is in contact with the bottom wall portion 41, the second air flow may not be generated.

  Also, the second air flow includes, as an example, an air flow directed to the suction port 42A via the first area 43 and an air flow directed to the suction port 42A via the second area 44. The separation distance from the suction port 42A to the second area 44 is longer than the separation distance from the suction port 42A to the first area 43. Therefore, in the second area 44, the air flow toward the suction port 42A tends to be less likely to be generated than in the first area 43, and the air flow tends to be weak even if the air flow is generated. However, the depths of the second recesses 82 and 84 are the same as the depths of the second recesses 81 and 83. Thus, the air flow generated in the second area 44 is less likely to be weaker than the air flow generated in the first area 43.

  Although the detailed description is omitted, the operation of the maintenance mechanism 30 for sucking the droplets remaining on the absorbing member 49 is the same as the above-described operation of the maintenance mechanism 30 for sucking the droplets remaining on the absorbing member 48. That is, after the first valve provided to the left tube 24 (see FIG. 3) is switched to the open state by the control unit (not shown), the suction unit 29 is driven. Inside the left space 40B, an air flow toward the suction port 42B is generated (not shown). The suction unit 29 sucks the droplets remaining on the absorbing member 49 through the suction port 42 B, the left suction passage 32, and the left tube 24. In the left space 40B, the possibility that the air flow is biased to a specific area is lower than in the case where the first recesses 71 and 72 and the second recesses 81 to 84 of the plate member 80 are not provided. .

  An example of a method of arranging the plate-like member 50 on the holding member 35 will be described with reference to FIG. In the following description, the rotational position around the axis 39A of the plate-like member 50 shown in FIG. 4 is referred to as a first rotational position. After the absorbing member 48 is disposed in the right space 40A, the plate-like member 50 is disposed in the right space 40A. The shape of the base 51 is point-symmetrical with respect to the axis 39A. Therefore, even when the plate member 50 is in the second rotation position rotated 180 degrees around the axis 39A from the first rotation position, the plate member 50 can be disposed in the right space 40A.

  The first recesses 71 and 72 are located at point symmetry with each other with respect to the axis 39A. Similarly, the second recesses 81 and 84 are in point symmetry with each other with respect to the axis 39A, and the second recesses 82 and 83 are in positions with respect to each other with respect to the axis 39A. Thus, even when the plate member 50 is in the second rotation position, the positional relationship of the first recesses 71 and 72 with respect to the suction port 42A and the positional relationship of the second recesses 81 to 84 with respect to the suction port 42A are ,does not change. That is, even when the plate member 50 is disposed in the right space 40A in the second rotational position, the suction opening 42A is formed in the right space 40A as the maintenance mechanism 30 performs the empty suction. An air flow is likely to occur uniformly. From the above, the first rotational position and the second rotational position are included in the rotational position of the plate-like member 50 that can be disposed in the right space 40A.

  As described above, the suction unit 29 is connected to the inside of the cap 40 via the suction port 42A. When the suction unit 29 is driven along with the execution of the purge of the maintenance mechanism 30, the plate-like member 50 regulates the deformation of the first frame-like wall 47A to the inside. Therefore, the printing apparatus 1 can more easily ensure the confidentiality inside the cap 40 when the purge is performed. Further, when the suction unit 29 is driven along with the execution of the empty suction of the maintenance mechanism 30, any one of the first air flow, the second air flow, and the third air flow is likely to be generated inside the cap 40. As a result, the degree of suction unevenness in the absorbing member 48 is reduced. Therefore, the printing apparatus 1 can easily suck the drops generated inside the cap 40 uniformly.

  By uniformly absorbing the droplets generated inside the cap 40, the droplets remaining on the cap 40 are less likely to adhere to the ejection surface 11A. As a result, the printing apparatus 1 can reduce the possibility of the drop adhering to the meniscus of the white ink formed on the nozzle 111. Therefore, the printing apparatus 1 can easily maintain the meniscus of the white ink formed on the nozzle 111.

  The second recesses 81 to 84 of the recess 100 are formed in the longitudinal wall 52. The longitudinal wall 52 is more likely to have more portions facing the first inner end surface 47C of the first frame-shaped wall 47A than the short wall 62. Therefore, even if the rigidity of the plate-like member 50 is lowered by the formation of the second recesses 81 to 84, the printing apparatus 1 can easily restrict the deformation of the first frame-like wall 47A. Further, in the longitudinal wall portion 52, second concave portions 81 to 84 which are a plurality of concave portions are formed. Therefore, when the maintenance mechanism 30 executes idle suction, an air flow toward the suction port 42A is likely to occur. Therefore, the printing apparatus 1 can further easily absorb drops generated on the absorbing member 48 uniformly.

  The depth of the second recess 82 is the same as the depth of the second recess 81 and is not shallower than the depth of the second recess 81. Similarly, the depth of the second recess 84 is not shallower than the depth of the second recess 83. Therefore, the air flow generated in the second area 44 is less likely to be weaker than the air flow generated in the first area 43. Therefore, when the suction unit 29 is driven in accordance with the idle suction of the maintenance mechanism 30, the degree of suction unevenness in the absorbing member 48 is further reduced.

  The inclined surface 86B of each of the second recesses 81 to 84 extends upward from the lower end surface 52A. Each inclined surface 86B extends from the inner end surface 52D of the longitudinal wall 52 to the outer end surface 62C as it extends upward. When the maintenance mechanism 30 performs empty suction, the second air flow tends to be directed to the suction port 42A inside the base 51 along the inclined surface 86B. Therefore, when the maintenance mechanism 30 performs idle suction, the degree of suction unevenness in the absorbing member 49 is further reduced.

  The first recesses 71 and 72 are formed in the short wall portion 62, respectively. At least the upper end portion of the short wall portion 62 is formed in the left-right direction. Therefore, the rigidity of the short wall portion 62 in the front-rear direction is easily maintained. Therefore, the printing apparatus 1 can reduce the degree of suction unevenness in the absorbing member 49 while maintaining the rigidity of the short wall portion 62. The first rotational position and the second rotational position are included in the rotational position of the plate-like member 50 which can be disposed in the right space 40A. Therefore, even when the rotational position of the plate-like member 50 about the axis 39A is reversed, the plate-like member 50 can be disposed in the right space 40A.

  In the said Example, 1st frame shaped wall part 47A and 2nd frame shaped wall part 47B are examples of "frame shaped wall part" of this invention. The suction unit 29 is an example of the "suction unit" in the present invention. The first inner end face 47C and the second inner end face 47D are examples of the “inner end face” in the present invention. The short wall portion 62 is an example of the "first extending portion" in the present invention. The longitudinal wall portion 52 is an example of the “second extending portion” in the present invention. The pair of extending surfaces 85 are examples of the “first extending surface” and the “second extending surface” in the present invention, respectively. The downward direction is an example of the "predetermined direction" in the present invention. The first direction is an example of the “left and right direction” in the present invention. The second direction is an example of the “front-rear direction” in the present invention.

  The present invention is not limited to the above embodiment, and various modifications are possible. For example, color ink may be ejected instead of the first head unit 10 ejecting white ink. The plate-like member 50 may be formed of, for example, a rubber material having hardness higher than that of the rubber material forming the cap 40 instead of being formed of a resin material. The base 51 of the plate-like member 50 may be formed in a frame shape by a plurality of members. In this case, a gap may be generated between the plurality of members. Alternatively, instead of the cap 40 moving upward and adhering to the ejection surface 11A, the first head unit 10 may be lowered to adhere the ejection surface 11A to the contact wall 47.

  The respective depths of the second recesses 82 and 84 provided on both sides in the left and right direction of the second region 44 are each greater than the depths of the second recesses 81 and 83 provided on the left and right sides of the first region 43. It may be deep. In this case, when the maintenance mechanism 30 performs idle suction, an air flow passing through the second area 44 is likely to be generated. In addition, the air flow passing through the second area 44 is less likely to be weaker than the air flow passing through the first area 43.

  The base 51 of the plate-like member 50 may not be provided with at least one of the plurality of specific recesses 58 and 68 and the first recesses 71 and 72. Hereinafter, the plate-like member which concerns on this modification is called 1st plate-like member. The shape of the first plate-like member is a shape that is point-symmetrical about the axis 39A, and is a shape that is symmetrical in the vertical direction. Therefore, even if one end face in the vertical direction of the first plate member faces either the upper or lower direction, the first plate member can be disposed in the right space 40A.

  The recess 100 may not include the first recess 72 and the second recesses 81 to 84 and may include only the first recess 71. In this case, the first recess 71 may be formed in the longitudinal wall 52 instead of the short wall 62. Similarly, the recess 100 may not include the first recesses 71 and 72 and the second recesses 82 to 84, and may include only the second recess 81. In this case, the second recess 81 may be formed in the short wall 62 instead of the long wall 52.

  The second recesses 81 and 82 may be respectively provided at two positions at which the separation distance from the suction port 42A is the same. For example, the suction port 42A may be provided at the center position of a pair of diagonals of the base 51 (see FIG. 4) of the plate member 50. In this case, the suction port 42A is separated by the same distance with respect to each of the second recesses 81 to 84. Further, at least one of the second recesses 81 to 84 may not have the inclined surface 86B. In this case, for example, the extension surface 86A may connect the upper end surface 52B and the lower end surface 52A.

  The first recesses 71 and 72 may not have the same shape. For example, the length of the first recess 72 in the left-right direction may be longer than the length of the first recess 71 in the left-right direction. In this case, the first recess 72 may be disposed at a position more distant from the first recess 71 than the suction port 42A.

DESCRIPTION OF SYMBOLS 1 printing apparatus 11 head 11A discharge surface 29 suction part 40 cap 42A, 42B suction port 47A first frame-shaped wall 47B second frame-shaped wall 47C first inner end face 47D second inner end face 48, 49 absorption member 50, 80 Plate-like member 51A first surface 51B second surface 51C third surface 51D fourth surface 69 exposed concave portions 71 and 72 first concave portions 81 to 84 second concave portion 85 extending surface 86B inclined surface 100 concave portion 111 nozzle

Claims (8)

A head having a plurality of nozzles formed thereon and having a discharge surface facing a predetermined direction;
The frame-shaped wall portion has a frame-shaped wall portion formed of an elastic body, and the frame-shaped wall portion is moved relative to the discharge surface in a direction in which the frame-shaped wall portion is in contact with and separated from the discharge surface. A cap provided so as to be in contact with the discharge surface;
Suction means connected to the inside of the cap via a suction port formed in the cap at a position surrounded by the frame-like wall;
An absorbent member disposed at a position surrounded by the frame-like wall and capable of absorbing a liquid;
A member that will be disposed in a position surrounded by the frame-like wall portions, has a base extending along the inner end surface of the frame-shaped wall portion, the suction opening is a plate member provided on the inner side of said base ,
A first surface provided on the base and facing the predetermined direction;
A second surface provided on the base and facing in a direction opposite to the predetermined direction;
A third surface provided on the base , facing the inner end surface of the frame-like wall, and connecting the first surface and the second surface;
A fourth surface provided on the base , facing the absorbing member, and connecting the first surface and the second surface;
Over the third surface and the fourth surface, over the first recess recessed toward the second surface in the first surface, and between the first surface and the second surface, A recess including at least one of a second recess recessed toward the fourth surface in the third surface ;
A printing apparatus comprising: an inclined surface connected to the first surface and extending in the predetermined direction in a third direction from the third surface to the fourth surface . The base is
A first extending portion extending in a first direction intersecting the predetermined direction;
A second extending portion extending in a second direction intersecting each of the predetermined direction and the first direction, wherein a length in the second direction is longer than a length in the first direction of the first extending portion; Equipped with
The printing apparatus according to claim 1, wherein the concave portion is formed in the second extending portion.   The printing apparatus according to claim 2, wherein a plurality of the concave portions are formed in the second extending portion. The recess includes the second recess,
The second recess is provided at each of two positions different in distance from the suction port.
The depth of the second recess provided at the first position, which is the position where the separation distance is longer, of the two positions is the second position where the separation distance is shorter than the two positions. The printing apparatus according to any one of claims 1 to 3, wherein the depth is equal to or greater than the depth of the second recess provided at a position. The recess includes the second recess,
The second recess is
A first extended face extending from the front Symbol third surface to said third direction,
Opposed with a gap to the first extended face, and a second extended face extending to the third direction from said third surface,
The printing apparatus according to any one of claims 1 to 4 , wherein the inclined surface is connected to the first extending surface, the second extending surface, and the first surface. The recess includes the first recess,
Wherein the first recess, the printing apparatus according to claim 2 or 3, characterized in that formed in the first extending portion. The base is a frame formed of a pair of the first extending portions and a pair of the second extending portions.
The recess is formed in each of the pair of second extending portions,
The position of the recess provided in one of the pair of second extending portions and the position of the recess provided in the other of the pair of second extending portions are symmetrical to each other. The printing apparatus according to claim 2. A head having a plurality of nozzles formed thereon and having a discharge surface facing a predetermined direction;
The frame-shaped wall portion has a frame-shaped wall portion formed of an elastic body, and the frame-shaped wall portion is moved relative to the discharge surface in a direction in which the frame-shaped wall portion is in contact with and separated from the discharge surface. A cap provided so as to be in contact with the discharge surface;
Suction means connected to the inside of the cap via a suction port formed in the cap at a position surrounded by the frame-like wall;
An absorbent member disposed at a position surrounded by the frame-like wall and capable of absorbing a liquid;
A plate-like member disposed at a position surrounded by the frame-like wall and extending along the inner end face of the frame-like wall;
A first surface provided on the plate-like member and facing the predetermined direction;
A second surface provided on the plate-like member and facing in a direction opposite to the predetermined direction;
A third surface provided on the plate-like member, facing the inner end surface of the frame-like wall, and connecting the first surface and the second surface;
A fourth surface provided on the plate-like member, facing the absorbing member, and connecting the first surface and the second surface;
Over the third surface and the fourth surface, over the first recess recessed toward the second surface in the first surface, and between the first surface and the second surface, A recess including at least one of a second recess recessed toward the fourth surface in the third surface;
Equipped with
An insertion hole through which a cylindrical projection of a holding member for holding the cap is inserted is formed at a central portion of the absorption member,
A printing apparatus comprising: a groove formed on the inner end surface and recessed in a direction away from the axis of the insertion hole.

Images