JP2015217556A - Liquid injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid injection device capable of adjusting an attitude of a cap with a simple configuration.SOLUTION: A liquid injection device comprises: a liquid injection section 32 injecting liquid toward a medium; a cap 52 movable between a capping position where the cap 52 can be brought into contact with the liquid injection section 32 and a standby position; a holding member 68 holding the cap 52 in a rotatable state with a rotating shaft extending in an axial direction as a center and moving the cap 52 in a movement direction; a biasing member 99 biasing the cap 52 toward the capping position; tubes 53 and 55 being provided so as to extend in an extension direction from a base end portion while having a base end portion connected to the cap 52 and being elastically deformed while imparting rotation force in a first direction to the cap 52 when the cap 52 is moved in the movement direction; and a fulcrum section 98 rotating the cap 52 in a second direction being an opposite direction to the first direction by restricting movement of one end portion in the extension direction of the cap 52 moved toward the standby position.

Description

  The present invention relates to a liquid ejecting apparatus such as a printer.

  As an example of the liquid ejecting apparatus, there is an ink jet printer that performs printing by ejecting ink from nozzles provided in an ejecting head. Among these printers, there are printers that include a cap member that contacts the ejection head to prevent nozzle drying and a spring member as an additional member that adjusts the attitude of the cap member away from the ejection head (for example, Patent Document 1).

JP 2009-202395 A

  By the way, when the additional member is provided to adjust the posture of the cap member as in the above-described printer, there is a problem that the number of constituent members of the apparatus increases and the apparatus becomes complicated or large. is there.

  Such a problem is not limited to printers that perform printing by ejecting ink, but is generally common in liquid ejecting apparatuses that include a cap member that moves relative to an ejecting head that ejects liquid. Yes.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a liquid ejecting apparatus that can adjust the posture of a cap with a simple configuration.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A liquid ejecting apparatus that solves the above problem includes a liquid ejecting unit that ejects liquid toward a medium, a capping position that can contact the liquid ejecting unit, and a standby position that is separated from the capping position in the movement direction. A movable cap, a holding member that holds the cap in a state of being pivotable about a pivot shaft that extends in an axial direction intersecting the movement direction, and moves the cap in the movement direction; and the cap And a base end portion connected to the cap and extending from the base end portion in an extending direction intersecting both the moving direction and the axial direction. When the cap moves in the moving direction, a tube that elastically deforms while applying a turning force in the first direction to the cap, and the cap heading toward the standby position By restricting the movement of one end of Kinobe設 direction, and a fulcrum for rotating the cap in the second direction that is opposite to the direction of the first direction.

  According to this configuration, when the cap moves from the capping position to the standby position, the cap rotates in the first direction by the action of the tube connected to the cap, but one end in the extending direction of the cap When the fulcrum part restricts the movement of the cap, the cap rotates in the second direction which is the opposite direction of the first direction. That is, by the action of the tube having the base end connected to the cap, the cap is rotated in the first direction so that one end in the extending direction of the cap first approaches the standby position, and then movement is restricted. The posture of the cap is adjusted by moving the cap in the moving direction while rotating in the second direction with the same end portion as a fulcrum. Thus, by rotating the cap by the action of the tube and the fulcrum portion, the posture of the cap can be adjusted with a simple configuration without adding an additional member such as a spring member.

  In the liquid ejecting apparatus, when the first end of the cap whose movement is restricted by the fulcrum is a first end, the base end of the tube is in the extending direction of the cap. A tube holding portion that is connected to the second end portion and holds the tube extending from the second end portion of the cap in the extending direction at a position away from the second end portion in the extending direction;

  According to this configuration, when the cap rotates, the position where the reaction force of the elastically deforming tube acts and the position where the movement is restricted by the fulcrum portion are arranged near both ends in the extending direction of the cap. Can stabilize the posture. In addition, the tube holding portion holds the tube extending in the extending direction from the second end portion of the cap at a position away from the second end portion in the extending direction, thereby suppressing unnecessary deflection displacement of the tube, The posture of the cap can be stabilized.

  In the liquid ejecting apparatus, the cap is connected, as the tube, to a ventilation tube for communicating the inside of the cap with the atmosphere and a suction tube for sucking the inside of the cap. The suction tube has a base end portion connected to a portion of the cap that is separated in the axial direction, and extends from the base end portion in the extending direction.

  According to this configuration, the ventilation tube and the suction tube are respectively connected to portions separated in the axial direction of the cap and are extended in the extending direction from the respective base end portions. The posture when the cap moves can be stabilized as compared with the case where the tube is extended in a different direction.

  In the liquid ejecting apparatus, a medium support portion that supports the medium, a transport mechanism that transports the medium toward the medium support portion in a transport direction, a drive source, and a driving force of the drive source are transmitted to the cap. A driving force transmission mechanism that is arranged at a position aligned with the medium support portion in the axial direction, and the driving force transmission mechanism is arranged upstream of the cap in the transport direction, and the tube Is extended in the extending direction from the cap toward the downstream in the transport direction.

  According to this configuration, the driving force transmission mechanism that transmits the driving force of the driving source to the cap is disposed upstream of the cap in the transport direction, while the tube extends from the cap in the extending direction toward the transport direction downstream. Therefore, it is possible to secure a space for extending the tube on the downstream side in the transport direction of the cap where the driving force transmission mechanism is not disposed.

  In the liquid ejecting apparatus, the cap is connected with a vent tube for communicating with the atmosphere inside the cap as the tube, and the tip of the vent tube is blocked downstream of the cap in the transport direction. An air release valve that is movable between a closed position and an open position that opens the tip of the vent tube is disposed.

  According to this configuration, the air release valve that can close the tip of the ventilation tube is disposed downstream of the cap in the transport direction. Therefore, the air release valve is disposed downstream of the cap in the transport direction where the driving force transmission mechanism is not disposed. The space for arranging can be secured.

  In the liquid ejecting apparatus, a wiper for wiping the liquid ejecting unit, and a wiper position where the wiper can be brought into contact with the liquid ejecting unit by holding the wiper and moving along the extending direction. A wiper holder that moves, and a valve body holding member that holds the atmosphere release valve in a movable state between the closed position and the open position, and the wiper includes the cap and the medium in the axial direction. The wiper holder is disposed between the support portion, and the wiper holder moves the atmosphere release valve by pressing the valve body holding member along with the movement in the extending direction, and the extending direction of the wiper holder When the wiper is disposed at the wiping position in accordance with the movement to, the atmosphere release valve is disposed at the closed position.

  According to this configuration, since the atmosphere release valve can be moved in accordance with the movement of the wiper holder that moves the wiper to the wiping position, a dedicated moving mechanism for moving the valve body holding member that holds the atmosphere release valve. Since it is not necessary to provide the configuration, the configuration can be simplified.

In the liquid ejecting apparatus, the wiper holder is moved by the driving force of the driving source transmitted through the driving force transmission mechanism.
According to this configuration, since the wiper holder is moved by the driving force of the driving source transmitted via the driving force transmitting mechanism, the cap, the wiper, and the air release valve can be moved by the common driving source.

In the liquid ejecting apparatus, the transport mechanism includes a transport roller for transporting the medium, and the drive source is a drive motor that rotates the transport roller.
According to this configuration, the cap, the wiper, and the air release valve can be moved by the driving force of the drive motor that rotates the transport roller. Therefore, a dedicated drive source is used to move the cap, the wiper, and the air release valve. There is no need to provide it.

1 is a perspective view of a liquid ejecting apparatus according to an embodiment. FIG. 2 is a top view of the liquid ejecting apparatus in FIG. 1. The schematic diagram which shows the internal structure of a liquid ejecting apparatus. The perspective view of a maintenance mechanism. The top view of a maintenance mechanism when a wiper exists in a wiping position. The top view of a maintenance mechanism when a wiper exists in a wiper retracting position. The top view which shows the structure of a cap periphery. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7. Sectional drawing which shows the structure of a cap and a holding member. 4A and 4B are schematic diagrams showing the operation of the cap. FIG. 4A shows a state where the cap is in the capping position, FIG. 5B shows a state where the cap comes into contact with the fulcrum, and FIG. Sectional drawing which cut | disconnected the cap when it contacts a fulcrum part by the surface shown by a 11-11 line arrow in FIG.

  Hereinafter, an embodiment of a liquid ejecting apparatus will be described with reference to the drawings. The liquid ejecting apparatus is an ink jet printer that performs recording (printing) by ejecting ink, which is an example of liquid, on a medium such as paper.

  As shown in FIG. 1, the liquid ejecting apparatus 11 includes a rectangular box-shaped housing portion 12, an upper lid 13 that is rotatably attached to the housing portion 12, and a rotating device that is also rotated with respect to the housing portion 12. And a front lid 14 that is movably attached. The upper lid 13 and the front lid 14 are respectively disposed at a closed position overlapping the casing 12 and an open position shown in FIG. 1 by being rotated to a predetermined angle.

  When the upper lid 13 is disposed at the open position, the insertion port 15 for inserting the medium S into the housing portion 12 is exposed. The upper lid 13 disposed at the open position functions as a support base (paper feed tray) that supports the medium S inserted into the insertion port 15.

  Further, when the front lid 14 is disposed at the open position, the discharge port 16 for discharging the medium S from the inside of the housing unit 12 is exposed. The front lid 14 disposed in the open position functions as a receiving portion (sheet discharge tray) that receives the medium S discharged from the discharge port 16. An extension portion 14 a for extending the length for supporting the medium S is rotatably attached to the front lid 14.

  In the housing portion 12, the outer wall where the insertion port 15 opens is the upper wall 21, the outer wall opposite to the upper wall 21 is the bottom wall 22, the outer wall where the discharge port 16 opens is the front wall 23, and the opposite side of the front wall 23. The outer wall is called the rear wall 24. Further, in the housing portion 12, a pair of outer walls that intersect with the upper wall 21, the bottom wall 22, the front wall 23, and the rear wall 24 are referred to as outer walls 25 and 26. And in the housing | casing part 12, the upper wall 21 side may be called a top | upper surface side, and the bottom wall 22 side may be called a bottom face side.

  On the surface side (top surface side) of the upper wall 21, an operation unit 27 for operating the liquid ejecting apparatus 11, and a display for displaying an operation result of the operation unit 27, an operation state of the liquid ejecting apparatus 11, and the like. A display panel as the unit 28 is arranged. The display unit 28 is rotated at a predetermined angle, so that the display unit 28 is disposed at a storage position substantially flush with the upper wall 21 and a standing position shown in FIG.

  Further, an opening 21a is provided in the upper wall 21 at a position closer to the front wall 23 than the operation unit 27 and the display unit 28, and an opening / closing lid 21b capable of opening and closing the opening 21a is attached to the upper wall 21. It has been. The opening / closing lid 21b is arranged at a closed position that covers the opening 21a and an open position that exposes the opening 21a by being rotated to a predetermined angle.

  As shown in FIG. 2, in the housing unit 12, a medium support unit 31 for supporting the medium S, and a liquid ejecting unit 32 that ejects liquid toward the medium S supported by the medium support unit 31. A carriage 33 that holds the liquid ejecting unit 32 and reciprocates is accommodated. In addition, a guide rail 34 for guiding the movement of the carriage 33 is installed in the housing unit 12. In FIG. 2, the opening / closing lid 21 b is not shown in order to clearly show the configuration inside the housing 12.

  The liquid ejecting unit 32 includes a plurality of nozzles 35 that eject liquid as droplets. The liquid ejecting section 32 has the first end E1 side (right end side in FIG. 2) in the longitudinal direction in the housing section 12 as a home position, and the second end E2 side in the longitudinal direction from the home position (left end side in FIG. 2). The outward movement toward the home and the backward movement toward the home position from the second end E2 side are alternately performed.

  In the present embodiment, the direction in which the liquid ejecting unit 32 ejects the liquid is the ejecting direction Z, and the direction in which the medium S is transported from the insertion port 15 toward the discharge port 16 on the medium supporting unit 31 is the transporting direction Y. The forward movement direction of the unit 32 is referred to as a scanning direction X. The direction in which the liquid ejecting unit 32 reciprocates (the direction along the scanning direction X) is also referred to as the width direction of the medium S. Further, the downstream side in the transport direction Y may be referred to as the front side, the upstream side in the transport direction Y as the rear side, the first end E1 side in the scanning direction X may be referred to as the right side, and the second end E2 side in the scanning direction X may be referred to as the left side. In the present embodiment, the ejection direction Z is vertically downward (gravity direction), and the ejection direction Z, the transport direction Y, and the scanning direction X are directions that intersect each other.

  The insertion port 15, the medium support unit 31, and the discharge port 16 are arranged in order from the upstream side to the downstream side in the transport direction Y to form a transport path for the medium S. The medium support unit 31 is disposed in the vicinity of the center in the scanning direction X in the housing unit 12. The home position is set to a position closer to the first end E1 than the medium support portion 31.

  As shown in FIG. 3, a transport mechanism 41 that transports the medium S inserted from the insertion port 15 toward the discharge port 16 and a maintenance mechanism for performing maintenance of the liquid ejecting unit 32 in the housing unit 12. 51 and a waste liquid storage unit 59 that stores the liquid discharged as the waste liquid from the liquid ejecting unit 32 are stored. In FIG. 3, the guide rail 34 and the carriage 33 are not shown in order to illustrate the waste liquid storage unit 59 and the like, and the medium support unit 31 and the liquid ejecting unit 32 are illustrated by a two-dot chain line.

  The transport mechanism 41 includes a transport roller 42 that transports the medium S from the insertion port 15 toward the medium support unit 31, and a discharge roller 43 that transports the medium S from the medium support unit 31 toward the discharge port 16. The transport mechanism 41 includes a drive motor 44 that is a drive source for rotating the transport roller 42 and the discharge roller 43, and a gear train for transmitting the driving force of the drive motor 44 to the transport roller 42 and the discharge roller 43. A power transmission mechanism 45. In addition, the rotation direction when the conveyance roller 42 and the discharge roller 43 convey the medium S in the conveyance direction Y is the first rotation direction (the direction that is clockwise when the conveyance roller 42 is viewed from the first end E1 side), A direction opposite to the first rotation direction is referred to as a second rotation direction (a direction that is counterclockwise when the transport roller 42 is viewed from the first end E1 side).

  The drive motor 44 is disposed at a position closer to the insertion port 15 than the medium support portion 31 in the transport direction Y and closer to the second end E2 than the first end E1 in the scanning direction X. The transport roller 42 of the present embodiment is made of a metal rod, and the end on the second end E2 side in the scanning direction X is connected to the power transmission mechanism 45.

  The maintenance mechanism 51 includes a cap 52 disposed at a position corresponding to the home position, a suction tube 53 whose base end is connected to the cap 52, a ventilation tube 55 whose base end is connected to the cap 52, and ventilation. An air release valve 56 provided on the distal end side of the tube 55 and a wiper 57 for wiping the liquid ejecting unit 32 are provided. The maintenance mechanism 51 includes a suction mechanism 54 that is connected to the cap 52 through the suction tube 53 and connected to the waste liquid storage unit 59 through the discharge tube 58.

  The cap 52 is arranged at a position aligned with the wiper 57 and the medium support portion 31 in the width direction. The wiper 57 is disposed between the cap 52 and the medium support portion 31 in the width direction. The driving force transmission mechanism 61 is disposed upstream of the cap 52 in the transport direction Y, whereas the tubes 53 and 55 are extended in the extending direction from the cap 52 toward the downstream of the transport direction Y.

  The suction tube 53 is an elastically deformable tube for sucking the inside of the cap 52, and after being extended in the transport direction Y from the base end connected to the cap 52, it is bent vertically downward, The front end side is extended toward the suction mechanism 54 located upstream in the transport direction Y.

  The ventilation tube 55 is an elastically deformable tube for allowing the inside of the cap 52 to communicate with the atmosphere. The ventilation tube 55 extends in the transport direction Y from the base end connected to the cap 52 and is then bent upward in the vertical direction. Thus, the tip end side extends in the scanning direction X. The tip of the vent tube 55 is disposed vertically above the base end connected to the cap 52 so that the liquid in the cap 52 does not leak through the vent tube 55. The air release valve 56 is disposed downstream of the cap 52 in the transport direction Y.

  The cap 52 is in a capping position (a position shown in FIG. 10A) that can contact the liquid ejecting unit 32 stopped in the home position, and a standby position (shown in FIG. 10C) that is closer to the bottom wall 22 than the capping position. Move along the injection direction Z. In the present embodiment, the moving direction of the cap 52 from the capping position toward the standby position coincides with the injection direction Z. The standby position of the cap 52 is a position away from the capping position in the moving direction.

  When the cap 52 moves to the capping position when the liquid ejecting unit 32 is at the home position, the cap 52 contacts the liquid ejecting unit 32 so as to surround the nozzle 35, thereby forming a closed space in which the nozzle 35 is opened. The formation of a closed space in which the nozzle 35 is opened by the cap 52 in this way is called “capping”. Then, when the cap 52 moves from the capping position to the standby position, the capping is released.

  The air release valve 56 moves between a closed position where the tip of the ventilation tube 55 is closed (position shown in FIG. 5) and an open position where the tip of the ventilation tube 55 is opened (position shown in FIG. 6). When the atmosphere release valve 56 moves to the open position, the closed space formed by the cap 52 is in a state communicating with the atmosphere. Further, when the air release valve 56 moves to the closed position in a state where capping by the cap 52 is performed, the closed space is sealed, and drying of the nozzle 35 is suppressed. Then, when the power is turned off without ejecting liquid, the liquid ejecting unit 32 moves to the home position, the cap 52 moves to the capping position, and the air release valve 56 closes the tip of the ventilation tube 55. Then wait.

  The suction mechanism 54 is, for example, a suction pump including a tube pump that generates suction force by moving an elastically deformable tube while a pressing member is crushed. When the suction mechanism 54 is driven when the air release valve 56 is in the closed position, the closed space is depressurized to a negative pressure. Thus, suction cleaning is performed in which the liquid is discharged from the liquid ejecting unit 32 through the nozzle 35. When the suction mechanism 54 is a tube pump, the closed space can be communicated with the atmosphere by releasing the crushing of the tube by the pressing member. In such a case, the atmosphere release valve 56 and The ventilation tube 55 may not be provided.

  The suction cleaning is performed as a maintenance operation for eliminating such ejection failure when, for example, the nozzle 35 is clogged or the like, causing liquid ejection failure. Therefore, the liquid discharged from the nozzle 35 by the suction cleaning is stored in the waste liquid storage unit 59 through the discharge tube 58 as a waste liquid containing bubbles mixed in the liquid ejecting unit 32 and a solute component of the thickened liquid.

  After the suction cleaning is performed, the atmospheric release valve 56 is moved to the open position to eliminate the negative pressure in the closed space, and then the cap 52 is moved to the standby position to release the capping. Thereafter, the suction mechanism 54 is driven to perform empty suction for collecting the liquid remaining in the cap 52 in the waste liquid storage portion 59.

  The wiper 57 moves between a wiping position where the nozzle 35 of the liquid ejecting unit 32 can be opened in the ejection direction Z and a wiper retracting position closer to the bottom wall 22 than the wiping position.

  When the wiper 57 is in the wiping position and the liquid ejecting section 32 moves so as to pass through the wiper 57 along the scanning direction X, the surface of the liquid ejecting section 32 where the nozzle 35 opens is in sliding contact with the wiper 57. Then, the liquid droplets and dust adhering to the liquid ejecting unit 32 are wiped off. Wiping the liquid ejecting portion 32 with the wiper 57 in this way is called “wiping”. Wiping is a maintenance operation performed after, for example, suction cleaning or after printing for a predetermined time.

  As a maintenance operation for eliminating the ejection failure, the liquid ejecting unit 32 may perform flushing for ejecting droplets toward the cap 52 at the standby position. After the flushing, the suction mechanism 54 is driven to perform empty suction for collecting the liquid received by the cap 52 in the waste liquid storage portion 59. In addition, since the meniscus of the liquid formed in the nozzle 35 may be disturbed when wiping is performed, it is preferable to perform flushing after the wiping is performed.

  The maintenance mechanism 51 includes a driving force transmission mechanism 61 for transmitting the driving force of the driving motor 44 to the wiper 57, the cap 52, and the atmosphere release valve 56 via the transport roller 42, and the wiper 57, the cap 52, the atmosphere release valve. 56 and a case member 62 for holding the driving force transmission mechanism 61.

  As shown in FIG. 4, the end on the first end side in the scanning direction X of the conveyance roller 42 made of a metal rod is connected to a first gear 63 included in the driving force transmission mechanism 61. The case member 62 has a case bottom wall 71 extending in the transport direction Y and the scanning direction X. The case member 62 includes a case left wall 72, a case front wall 73, and a case right wall 74 that extend in the injection direction Z so as to intersect the case bottom wall 71 and surround the cap 52.

  The case left side wall 72 is disposed at a position facing the waste liquid storage portion 59. The case front wall 73 extends in the scanning direction X downstream of the cap 52 in the transport direction Y. The case right side wall 74 is disposed at a position facing the case left side wall 72 with the cap 52 interposed therebetween. The case front wall 73 is provided with a tube insertion portion 73 a for drawing the tubes 53 and 55 in the transport direction Y and a tube holding portion 73 b for holding the tip portion of the suction tube 53.

  The case member 62 includes a pair of front guide protrusions 76 extending in the injection direction Z between the case front wall 73 and the cap 52, and a rear guide protrusion extending in the injection direction Z upstream of the cap 52 in the transport direction Y. And a right guide protrusion 78 extending in the injection direction Z between the case right wall 74 and the cap 52.

Next, the configuration of the driving force transmission mechanism 61 will be described in detail.
The drive force transmission mechanism 61 includes a first gear 63 that rotates integrally with the transport roller 42, a second gear 64 that meshes with the first gear 63, a drive shaft 65 that rotates integrally with the second gear 64, and the drive shaft 65. A first cam member 66 attached to the proximal end portion and a second cam member 67 attached to the distal end portion of the drive shaft 65 are provided.

  The driving force transmission mechanism 61 reciprocates along the conveyance direction Y in conjunction with the holding member 68 that rotates in conjunction with the rotation of the first cam member 66 and the rotation of the second cam member 67. A rack member 69. The rack member 69 extends in the transport direction Y along the case left side wall 72 of the case member 62.

  The outer peripheral surface of the first cam member 66 is provided with a cam surface 66a formed of a curved surface whose distance from the center of the drive shaft 65 continuously changes, and the holding member 68 is engaged with the cam surface 66a. Engaging arm portion 68a. A pinion 67 a is provided on the outer peripheral side of the second cam member 67, and a rack portion 69 a that meshes with the pinion 67 a is provided on the rack member 69.

  The wiper 57 is held by a wiper holder 81 extending in the transport direction Y along the case left side wall 72 of the case member 62. The wiper holder 81 is positioned between the rack member 69 and the case left side wall 72 in the scanning direction X, and the base end portion (the end portion on the upstream side in the transport direction Y) of the wiper holder 81 is the front end portion of the rack member 69 ( It is arranged so as to line up in the scanning direction X with the downstream end in the transport direction Y).

  The rack member 69 and the wiper holder 81 are configured such that the transport direction Y is the longitudinal direction and can be reciprocated along the transport direction Y. The wiper holder 81 moves the wiper 57 to the wiping position by holding the wiper 57 and moving along the transport direction Y.

  A long hole 69b extending in the ejection direction Z is provided at the distal end portion (end portion on the downstream side in the transport direction Y) of the rack member 69, and the base end portion (end portion on the upstream side in the transport direction Y) of the wiper holder 81 is provided. An engaging pin 81a (see FIG. 5) that is inserted through the long hole 69b is projected.

  A pair of guide grooves 79 extending in the transport direction Y are formed in the case left side wall 72 of the case member 62. The guide groove 79 has an upper flat portion 79a connected to the upstream end in the conveyance direction Y of the guide groove 79, and a lower flat portion 79c arranged vertically below the upper flat portion 79a and connected to the downstream end in the conveyance direction Y of the guide groove 79. And a guide inclined portion 79b connecting the upper flat portion 79a and the lower flat portion 79c.

  In the wiper holder 81, a pair of guide pins 81b inserted into a pair of guide grooves 79 provided in the case left side wall 72 are provided so as to be aligned in the transport direction Y. When the guide pin 81b of the wiper holder 81 is engaged with the upper flat portion 79a of the guide groove 79, the wiper holder 81 is more than when the guide pin 81b is engaged with the lower flat portion 79c of the guide groove 79. Is also located vertically above.

  In the present embodiment, the position of the wiper 57 when the guide pin 81b is engaged with the upper flat portion 79a is referred to as a wiping position, and the guide pin 81b is engaged with the lower flat portion 79c of the guide groove 79. The position of the wiper 57 at that time (position shown in FIG. 4) is called a wiper retracting position.

  The wiper holder 81 moves vertically downward by moving the guide pin 81b toward the downstream in the transport direction Y while being guided by the guide inclined portion 79b, while the guide pin 81b is guided by the guide inclined portion 79b in the transport direction. It moves vertically upward by moving toward Y upstream.

  A valve body holding member 83 is attached to the case front wall 73 of the case member 62 so as to be rotatable around a lever shaft 82 whose transport direction Y is the axial direction. The valve body holding member 83 includes a holding portion 84 that extends vertically upward from the lever shaft 82 and an engagement lever 85 that extends vertically downward from the lever shaft 82. The holding portion 84 of the valve body holding member 83 holds the air release valve 56 in a state where it can move between the closed position and the open position. Further, the valve body holding member 83 is urged by the rotation urging member 86 in a direction in which the atmosphere release valve 56 is disposed at the closed position. The rotation biasing member 86 is an elastically deformable member such as a coil spring.

  As shown in FIG. 5, the end of the wiper holder 81 on the front end side (end on the downstream side in the transport direction Y) is moved along the transport direction Y, and the engagement lever 85 of the valve body holding member 83 is moved. The pressing inclined portion 81c that presses the angle is formed in an aspect that is inclined with respect to the transport direction Y.

  The wiper holder 81 rotates the valve body holding member 83 against the urging force of the rotation urging member 86 by pressing the holding portion 84 along with the movement along the transport direction Y, thereby The release valve 56 is moved from the closed position to the open position. When the wiper holder 81 releases the pressing of the holding portion 84, the valve body holding member 83 is rotated to the original position by the urging force of the rotation urging member 86, so that the air release valve 56 is closed from the open position. Return to position.

  That is, the atmosphere release valve 56 moves in conjunction with the movement of the wiper holder 81 that holds the wiper 57. Further, in the present embodiment, when the wiper 57 is disposed at the wiping position as the wiper holder 81 moves in the transport direction Y, the atmosphere release valve 56 is disposed at the closed position. Further, when the wiper 57 is disposed at the wiper retracted position, the atmosphere release valve 56 is disposed at the open position.

Next, operations of the wiper 57 and the atmosphere release valve 56 will be described.
First, when the air release valve 56 is moved from the closed position to the open position, the transport roller 42 is moved together with the first gear 63 in the second rotation direction (counterclockwise when the transport roller 42 is viewed from the first end E1 side). Rotate.

  Then, as shown in FIG. 6, the second gear 64, the drive shaft 65, and the second cam member 67 rotate in the first rotation direction (clockwise when the drive shaft 65 is viewed from the first end E1 side). Further, the driving force is transmitted to the rack portion 69a via the pinion 67a of the second cam member 67, and the rack member 69 moves toward the downstream in the transport direction Y. When the rack member 69 moves downstream in the transport direction Y, the engagement pin 81a is pushed through the long hole 69b, so that the wiper holder 81 moves downstream in the transport direction Y.

  When the wiper holder 81 moves downstream in the transport direction Y, the pressing inclined portion 81c of the wiper holder 81 presses the engagement lever 85 of the valve body holding member 83, so that the valve body holding member 83 is rotated and biased. It rotates against the urging force of 86. Thereby, the air release valve 56 moves from the closed position shown in FIG. 5 to the open position shown in FIG.

  When the air release valve 56 is in the closed position, the wiper 57 is in the wiping position. When the wiper holder 81 moves downstream in the transport direction Y, the engagement pin 81 a is guided by the guide groove 79, so that the wiper 57 moves vertically together with the wiper holder 81. As a result, the wiper 57 moves from the wiping position to the wiper retracting position. Here, since the engagement pin 81a is inserted into the long hole 69b extending in the injection direction Z, the engagement pin 81a moves vertically downward along the long hole 69b, so that the wiper holder 81 moves downward in the vertical direction. Movement is allowed.

  As described above, when the atmospheric release valve 56 is moved from the closed position to the open position, and when the wiper 57 is moved from the wiping position to the wiper retracted position, the transport roller 42 is rotated in the second rotation direction.

  Next, when wiping is performed, in order to move the wiper 57 from the wiper retracted position to the wiping position, the transport roller 42 is moved together with the first gear 63 in the first rotation direction (the transport roller 42 is viewed from the first end E1 side). Rotate clockwise).

  Then, as shown in FIG. 5, the second gear 64, the drive shaft 65, and the second cam member 67 rotate in the second rotation direction (counterclockwise when the drive shaft 65 is viewed from the first end E1 side). . Further, the driving force is transmitted to the rack portion 69a through the pinion 67a of the second cam member 67, and the rack member 69 moves toward the upstream in the transport direction Y. When the rack member 69 moves toward the upstream in the transport direction Y, the engagement pin 81a is pushed through the long hole 69b, so that the wiper holder 81 moves toward the upstream in the transport direction Y.

  At this time, the wiper holder 81 moves vertically upward by the engagement pin 81a moving along the guide groove 79, and the wiper 57 is disposed at the wiping position. Since the engagement pin 81a is inserted through the long hole 69b extending in the injection direction Z, the wiper holder 81 moves vertically upward when the engagement pin 81a moves vertically upward along the long hole 69b. Is acceptable.

  Further, when the wiper holder 81 moves toward the upstream in the transport direction Y, the pressing of the valve body holding member 83 by the pressing inclined portion 81c is released, so that the valve body holding member 83 is attached to the rotation biasing member 86. The atmospheric release valve 56 is moved by the force to move from the open position shown in FIG. 6 to the closed position shown in FIG.

  As described above, when the wiper 57 is moved from the wiper retracted position to the wiping position, and when the atmosphere release valve 56 is moved from the open position to the closed position, the transport roller 42 is rotated in the first rotation direction.

Next, the configuration of the cap 52 and its surroundings will be described in detail.
As shown in FIG. 7, the cap 52 includes a cap body 91 and a bottomed box-shaped support member 87 that supports the cap body 91. The support member 87 has a pair of rotation shafts 88 extending along the scanning direction X. In the present embodiment, the axial direction of the rotation shaft 88 is a width direction along the scanning direction X, and is a direction that intersects the moving direction of the cap 52 (injection direction Z).

  The holding member 68 is configured to be rotatable around a rotation shaft portion 68b positioned upstream of the cap 52 in the transport direction Y, and is rotated so as to sandwich the cap 52 and the support member 87 in the scanning direction X. A pair of holding arm portions 68c extending in the transport direction Y from the vicinity of the moving shaft portion 68b is provided. A shaft hole 68d into which the rotation shaft 88 is inserted is formed at the distal end portion of the holding arm portion 68c. The holding member 68 holds the cap 52 in a state in which the holding member 68 can rotate around the rotation shaft 88. The opening area of the shaft hole 68d is preferably set large so that a gap is formed between the shaft hole 68d and the rotation shaft 88.

  In the transport direction Y, a rear guide projection 77 is disposed between the pivot shaft 68 b and the cap 52, and a front guide projection 76 is disposed downstream of the cap 52 in the transport direction Y. Further, a right guide protrusion 78 is disposed on the first end E1 side in the scanning direction X with respect to the cap 52. Then, the movement of the cap 52 in the direction intersecting the injection direction Z (for example, the width direction and the conveyance direction Y) is restricted by the front guide protrusion 76, the rear guide protrusion 77, and the right guide protrusion 78.

  As shown in FIG. 8, the cap body 91 has a cap bottom portion 91a and a cap peripheral wall portion 91b. The cap 52 has an elastic annular lip portion 92 attached to the tip of the cap peripheral wall portion 91b, an absorbent material 93 accommodated in the cap body 91, a pressing member 94 for holding the absorbent material 93, Is provided. The absorbent material 93 is preferably formed of a porous material or a nonwoven fabric that can absorb liquid. The pressing member 94 is made of, for example, a metal having a net shape or a rod shape. In FIG. 8, the guide protrusions 76, 77, 78, the holding member 68, and the support member 87 are not shown in order to clearly show the configuration of the cap body 91.

  A plurality of (three in the present embodiment) guide projections 91 c projecting vertically upward from the lip portion 92 project from the cap peripheral wall portion 91 b. When the cap 52 moves from the standby position to the capping position and comes into contact with the liquid ejecting unit 32, the guide protrusion 91 c comes into contact with the end of the liquid ejecting unit 32, so that the lip 92 is opened on the liquid ejecting unit 32. The position of the cap 52 is adjusted so as to come into contact with 32a (the surface on which the nozzle 35 opens). The lip portion 92 that is in contact with the opening surface 32a of the cap 52 is elastically deformed, so that the sealing degree of the closed space in which the nozzle 35 is opened is increased.

  A connecting protrusion 91d that protrudes in the transport direction Y toward the outside of the cap 52 protrudes from the cap peripheral wall 91b. In addition, a cylindrical protrusion 95 projects from the cap bottom 91a toward the inside of the cap 52. The connection protrusion 91d and the cylindrical protrusion 95 are formed with an atmosphere communication hole 95a, and the atmosphere communication hole 95a is opened at the tip of the cylinder protrusion 95 and the tip of the connection protrusion 91e. The proximal end portion of the ventilation tube 55 is connected to the connection protrusion 91d so as to communicate with the atmosphere communication hole 95a.

  The holding member 94 is provided with a cover portion 94a (see also FIG. 7) having a substantially circular shape in plan view, which is positioned vertically above the opening of the air communication hole 95a in the cap 52. When the negative pressure in the closed space is eliminated after the suction cleaning is performed, the gas flows into the cap 52 through the air communication hole 95a. At this time, if the liquid in the cap 52 scatters together with the flowing gas and adheres to the nozzle 35, the meniscus of the liquid formed in the nozzle 35 may be disturbed. In this regard, it is preferable to dispose the cover portion 94a vertically above the air communication hole 95a, because the liquid that scatters with the inflow of gas is suppressed from adhering to the nozzle 35.

  A plurality of fixing pins 96 project from the cap bottom portion 91 a toward the inside of the cap 52. The absorbent material 93 is formed with through holes 93a and 93b through which the cylindrical protrusion 95 and the fixing pin 96 can be inserted. The pressing member 94 is fixed to the tip of the fixing pin 96 in a state where the cylindrical protrusion 95 and the fixing pin 96 are inserted into the through holes 93a and 93b of the absorbent material 93, respectively.

  In the vicinity of the center of the cap bottom portion 91a in the scanning direction X and the conveyance direction Y, a connection projection 91e that protrudes in the ejection direction Z toward the outside of the cap 52 is projected. A suction hole 97 that opens into the cap 52 is formed in the cap bottom portion 91a and the connection projection 91e.

  As shown in FIG. 9, the proximal end portion of the suction tube 53 is connected to a connection protrusion 91 e extending from the cap bottom portion 91 a so as to communicate with the suction hole 97. 9 is a cross-sectional view taken along line 9-9 in FIG.

  The vent tube 55 and the suction tube 53 are respectively connected to portions separated from each other in the axial direction (scanning direction X) of the cap 52 and extend from the base end portion in the extending direction that coincides with the transport direction Y. Is done. That is, the extending direction of the ventilation tube 55 and the suction tube 53 from the cap 52 is a direction that intersects both the moving direction of the cap 52 and the axial direction of the rotation shaft 88.

  The support member 87 includes a holding bottom portion 87a disposed at a position overlapping with the cap bottom portion 91a, and a holding side wall 87b disposed at a position overlapping with the cap peripheral wall portion 91b. The holding bottom portion 87a has a plurality (four in this embodiment) of spring hooking portions 87c, a protruding wall portion 87d surrounding the suction tube 53 connected to the cap bottom portion 91a, and an insertion portion through which the connection protrusion 91e can be inserted. 87e. The pair of pivot shafts 88 are provided so as to extend along the scanning direction X from the holding side wall 87b. Further, the protruding wall portion 87d extends in the transport direction Y so as to prevent the proximal end portion of the suction tube 53 from being displaced in the width direction.

  As shown in FIG. 10, the case bottom wall 71 is provided with a fulcrum portion 98 projecting vertically upward at a position between the rotation shaft portion 68 b and the rotation shaft 88 in the transport direction Y. ing. The case bottom wall 71 has a plurality of (four in this embodiment) spring locking portions 71 a protruding therefrom.

  As shown in FIG. 11, the maintenance mechanism 51 includes a plurality of (four in this embodiment) biasing members 99 that bias the cap 52 toward the capping position. The biasing member 99 is an elastically deformable member such as a coil spring. One end (vertical upper end) of the urging member 99 is locked to a spring hook portion 87 c provided on the cap 52, while the other end (vertical lower end) of the urging member 99 is spring locked on the case bottom wall 71. Locked to the portion 71a.

Next, the movement of the cap 52 along the injection direction Z will be described.
When the cap 52 is in the capping position shown in FIG. 10A, the cap 52 is in contact with the liquid ejecting unit 32 by the urging force of the urging member 99. At this time, the cap 52 is supported by the case bottom wall 71 via the biasing member 99.

  In this state, when the drive shaft 65 and the first cam member 66 rotate in the first rotation direction (clockwise in FIG. 10), the cam surface 66a of the first cam member 66 presses the engagement arm portion 68a of the holding member 68. As a result, the holding member 68 rotates counterclockwise in FIG. 10 about the rotation shaft portion 68b. The holding arm 68c of the holding member 68 presses the pivot shaft 88 of the support member 87 vertically downward, so that the holding member 68 moves the cap 52 in the moving direction (vertical) against the urging force of the urging member 99. (Down).

  At this time, as shown in FIG. 10B, since the tubes 53 and 55 extending in the transport direction Y are connected to the cap 52, the front end side (left end side in FIG. 10) of the cap 52 is the tubes 53 and 55. As a result, the movement to the standby position is delayed from the rear end side (the right end side in FIG. 10). That is, if the rear end portion in the extending direction of the cap 52 is the first end portion and the front end portion in the extending direction of the cap 52 is the second end portion, when the cap 52 moves in the moving direction, The first end rotates in the first direction (clockwise in FIG. 10) so that it moves to the standby position before the second end. At this time, the tubes 53 and 55 are elastically deformed while applying a turning force in the first direction to the cap 52.

  As described above, when the cap 52 moves toward the standby position while being inclined with respect to the opening surface 32 a by the rotation in the first direction, the second end portion of the cap 52 contacts the fulcrum portion 98. Thereby, since the movement of the second end portion in the extending direction of the cap 52 is restricted, the cap 52 moves in the moving direction and contacts the fulcrum portion 98 as the holding arm portion 68c rotates. The two ends are rotated in a second direction (counterclockwise in FIG. 10) which is the opposite direction of the first direction with the rotation fulcrum as a pivot. Then, as a result of the cap 52 rotating in the second direction and moving in the moving direction, the cap 52 is disposed at the standby position shown in FIG. 10C against the reaction force of the tubes 53 and 55. In the standby position, the cap 52 is preferably in a state in which the inclination with respect to the opening surface 32a is eliminated.

  On the other hand, when the cap 52 moves from the standby position to the capping position, the drive shaft 65 and the first cam member 66 rotate in the second rotation direction (counterclockwise in FIG. 10). Then, the pressing of the engaging arm 68a by the cam surface 66a is released, and the pressing of the rotating shaft 88 by the holding arm 68c is released. Accordingly, the cap 52 moves from the standby position to the capping position while the holding member 68 is rotated clockwise in FIG. 10 by the urging force of the urging member 99.

  If the reaction force of the tubes 53 and 55 is applied to the cap 52 so that the first end is separated from the liquid ejecting unit 32 before the second end when the cap 52 is separated from the liquid ejecting unit 32, The posture when the cap 52 is separated from the liquid ejecting unit 32 can be stabilized even when the dimensions of the components vary. Moreover, by doing in this way, when the cap 52 leaves | separates from the liquid injection part 32, it can suppress that the liquid adhering to the lip | rip part 92 and the liquid injection part 32 scatters.

  Further, when the cap 52 is disposed at the capping position, if the reaction force of the tubes 53 and 55 is applied to the cap 52 so that the second end comes into contact with the liquid ejecting unit 32 before the first end, Even when there are variations in the dimensions of the components, the posture when the cap 52 contacts the liquid ejecting unit 32 can be stabilized.

  When performing suction cleaning, after the atmosphere release valve 56 is placed in the closed position with the cap 52 capped and the closed space is sucked, the atmosphere release valve 56 is moved to the open position and the negative pressure in the closed space is reduced. Relieve pressure. Therefore, the shape and arrangement of the first cam member 66 and the second cam member 67 are adjusted so that the atmosphere release valve 56 and the wiper 57 can be moved in a state where the cap 52 is arranged at the capping position. .

Next, the operation of the liquid ejecting apparatus 11 configured as described above will be described.
When the cap 52 moves in the moving direction as the holding member 68 rotates, the cap 52 rotates in the first direction by the action of the tubes 53 and 55 extending in the extending direction from the cap 52. At this time, if the first end portion of the cap 52 is caught by the front guide projection 76, the cap 52 remains tilted by the rotation in the first direction when the holding member 68 is rotated and reaches the standby position. There is a risk of not. Even if the cap 52 is not caught by the front guide projection 76, the liquids are caused by the action of the tubes 53 and 55 when there is an error in the change in the bending state of the tubes 53 and 55 or the elastic modulus of the tubes 53 and 55. The posture and inclination of the cap 52 away from the ejection unit 32 may vary.

  In that regard, as shown in FIG. 11, the movement of one end (second end) in the extending direction of the cap 52 toward the standby position is restricted by the fulcrum part 98, so that the front guide protrusion 76 can be moved. It is possible to rotate the cap 52 in the second direction that is opposite to the first direction while eliminating the catch. Then, by rotating the cap 52 rotated in the first direction by the action of the tubes 53 and 55 in the second direction, the inclination of the cap 52 is eliminated and the cap 52 is disposed at the standby position. That is, after the cap 52 is rotated by the reaction force of the tubes 53 and 55, the cap 52 can be stabilized in the standby position by further contacting the fulcrum 98 and rotating in the opposite direction. Become.

  Note that the fulcrum portion 98 is an empty space (between the urging members 99 arranged in the scanning direction X) reserved for arranging the urging members 99 on the case bottom wall 71 of the case member 62 that supports the cap 52. ). Therefore, the apparatus is not enlarged in order to secure a new space for providing the fulcrum portion 98, and the number of parts is not increased.

  Further, since the ventilation tube 55 extending in the extending direction from the second end portion of the cap 52 is held by the tube holding portion 73b at a position away from the second end portion in the extending direction, the ventilation tube 55 is unnecessary. It is possible to stabilize the posture when the cap 52 moves along the moving direction by suppressing the bending displacement. Similarly, with respect to the suction tube 53, it is preferable to suppress an unnecessary deflection displacement by fixing a portion bent vertically downward from the cap 52 and extending upstream in the transport direction Y to the case bottom wall 71 or the like. .

  Further, the wiper holder 81 that holds the wiper 57, the holding member 68 that holds the cap 52, and the valve body holding member 83 that holds the air release valve 56 are transmitted via the driving force transmission mechanism 61. It moves by the driving force. That is, since a plurality of components (wiper 57, air release valve 56 and cap 52) of maintenance mechanism 51 can be moved by a drive source for transporting medium S, a drive source for moving each component. The configuration of the apparatus can be simplified as compared with the case where each is provided. Then, by simplifying the configuration of the apparatus in this way, the apparatus can be reduced in size and weight.

According to the above embodiment, the following effects can be obtained.
(1) When the cap 52 moves from the capping position to the standby position, the cap 52 rotates in the first direction by the action of the tubes 53 and 55 connected to the cap 52, but the cap 52 extends in the extending direction. When the fulcrum part 98 restricts the movement of one end part, the cap 52 rotates in the second direction which is opposite to the first direction. That is, by the action of the tubes 53 and 55 whose base ends are connected to the cap 52, the cap 52 is rotated in the first direction so that one end in the extending direction of the cap 52 first approaches the standby position. Thereafter, the cap 52 moves in the moving direction while rotating in the second direction with the same end portion where the movement is restricted as a fulcrum, so that the posture of the cap 52 is adjusted. Thus, by rotating the cap 52 by the action of the tubes 53 and 55 and the fulcrum portion 98, the posture of the cap 52 can be adjusted with a simple configuration without adding an additional member such as a spring member. .

  (2) By disposing the position where the reaction force of the tubes 53 and 55 that are elastically deformed and the position where movement is restricted by the fulcrum portion 98 in the vicinity of both ends in the extending direction of the cap 52, the cap 52 is The posture when moving can be stabilized. Further, since the tube holding portion 73b holds the ventilation tube 55 extending in the extending direction from the second end portion of the cap 52 at a position away from the second end portion in the extending direction, unnecessary bending of the ventilation tube 55 is achieved. The posture of the cap 52 can be stabilized by suppressing the displacement.

  (3) The ventilation tube 55 and the suction tube 53 are connected to the portions of the cap 52 that are separated from each other in the axial direction, and are extended from the respective base end portions in the extending direction. The posture when the cap 52 moves can be stabilized as compared with the case where the plurality of tubes 53 and 55 are extended in different directions.

  (4) The driving force transmission mechanism 61 that transmits the driving force of the driving motor 44 that is a driving source to the holding member 68 is disposed upstream of the cap 52 in the conveying direction Y, while the tubes 53 and 55 are arranged in the conveying direction from the cap 52 Y is extended in the extending direction toward downstream. Therefore, it is possible to secure a space for extending the tubes 53 and 55 on the downstream side in the transport direction Y of the cap 52 where the driving force transmission mechanism 61 is not disposed.

  (5) Since the air release valve 56 capable of closing the tip of the ventilation tube 55 is disposed downstream of the cap 52 in the transport direction Y, the transport direction Y downstream side of the cap 52 where the driving force transmission mechanism 61 is not disposed. It is possible to secure a space for disposing the atmosphere release valve 56 on the surface.

  (6) Since the atmosphere release valve 56 can be moved in accordance with the movement of the wiper holder 81 that moves the wiper 57 to the wiping position, a dedicated body for moving the valve body holding member 83 that holds the atmosphere release valve 56 is used. Since it is not necessary to provide a moving mechanism, the configuration can be simplified.

  (7) Since the wiper holder 81 is moved by the driving force of the driving source transmitted through the driving force transmitting mechanism 61, the cap 52, the wiper 57, and the air release valve 56 can be moved by the common driving source. .

  (8) Since the cap 52, the wiper 57, and the atmosphere release valve 56 can be moved by the driving force of the drive motor 44 that rotates the transport roller 42, the cap 52, the wiper 57, and the atmosphere release valve 56 are moved. There is no need to provide a dedicated drive source.

In addition, you may change the said embodiment like the modification shown below.
The suction tube 53 may be connected to the second end in the extending direction of the cap 52.
The ventilation tube 55 extends from the base end connected to the cap 52 in the extending direction, while the suction tube 53 moves from the base end connected to the cap 52 in the moving direction (vertically below the injection direction Z). You may extend to. In this case, the rotation of the cap 52 in the first direction due to the action of the suction tube 53 can be suppressed.

  An air release valve 56 may be disposed upstream of the cap 52 in the conveyance direction Y. In this case, the base end portion of the vent tube 55 is connected to the cap 52, and the vent tube 55 is extended from the base end portion in the transport direction Y, and then bent vertically downward so that the tip end side thereof is It is good to extend towards the conveyance direction Y upstream. Even when the distal end side of the ventilation tube 55 is arranged vertically below the base end portion as described above, the air communication hole 95a is opened at the distal end (vertical upper end) of the cylindrical projection 95 projecting into the cap 52. By doing so, the liquid in the cap 52 can be prevented from flowing into the ventilation tube 55.

  The tubes 53 and 55 having the base end connected to the cap 52 may be extended from the base end in the extending direction along the scanning direction X. In this case, the direction along the transport direction Y may be the axial direction of the rotation shaft 88.

In the maintenance mechanism 51, a drive source for moving the cap 52, the wiper 57 and the air release valve 56 may be provided separately from the drive motor 44.
When the wiper 57 is disposed at the wiping position, the air release valve 56 may be disposed at the open position.

The guide protrusions 76, 77, and 78 for guiding the movement of the cap 52 may not be provided.
In the maintenance mechanism 51, a restriction protrusion that restricts the movement of the first end in the extending direction of the cap 52 that rotates in the second direction is arranged downstream of the fulcrum part 98 in the transport direction Y. The position of the cap 52 at the standby position may be determined by the portion and the fulcrum portion 98.

  The extending direction from the base end portion of the tubes 53 and 55 may be adjusted so that the reaction force of the tubes 53 and 55 does not act on the cap 52 when the cap 52 moves away from the liquid ejecting portion 32.

  When the cap 52 is separated from the liquid ejecting unit 32, the reaction force of the tubes 53 and 55 may be applied to the cap 52 so that the second end is separated from the liquid ejecting unit 32 before the first end. .

  The liquid ejected by the liquid ejecting unit is not limited to ink, and may be, for example, a liquid material in which functional material particles are dispersed or mixed in the liquid. For example, recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. It may be configured.

  The medium is not limited to paper, and may be a plastic film, a thin plate, or the like, or may be a fabric used in a printing apparatus.

  DESCRIPTION OF SYMBOLS 11 ... Liquid injection apparatus, 31 ... Medium support part, 32 ... Liquid injection part, 41 ... Conveyance mechanism, 42 ... Conveyance roller, 44 ... Drive motor, 52 ... Cap, 53 ... Suction tube, 55 ... Venting tube, 56 ... Air | atmosphere Open valve, 57 ... wiper, 61 ... driving force transmission mechanism, 68 ... holding member, 73b ... tube holding portion, 81 ... wiper holder, 83 ... valve body holding member, 88 ... rotating shaft, 98 ... fulcrum, 99 ... Biasing member, S ... medium, Y ... conveying direction.

Claims (8)

A liquid ejecting unit that ejects liquid toward the medium;
A cap movable between a capping position capable of contacting the liquid ejecting unit and a standby position separated from the capping position in the movement direction;
A holding member that holds the cap in a rotatable state about a rotation shaft extending in an axial direction intersecting the moving direction, and moves the cap in the moving direction;
A biasing member that biases the cap toward the capping position;
When a base end is connected to the cap and extends from the base end in an extending direction that intersects both the moving direction and the axial direction, and the cap moves in the moving direction, A tube that elastically deforms while applying rotational force in the first direction to the cap;
A fulcrum portion for rotating the cap in a second direction opposite to the first direction by restricting movement of one end portion in the extending direction of the cap toward the standby position;
A liquid ejecting apparatus comprising: When the one end of the cap whose movement is restricted by the fulcrum is the first end,
The base end portion of the tube is connected to a second end portion in the extending direction of the cap,
The liquid ejecting apparatus according to claim 1, further comprising a tube holding portion that holds the tube extending in the extending direction from the second end portion of the cap at a position away from the second end portion in the extending direction. . As the tube, a vent tube for communicating the inside of the cap with the atmosphere and a suction tube for sucking the inside of the cap are connected to the cap,
2. The vent tube and the suction tube are respectively connected to a portion of the cap that is separated in the axial direction from the base end portion, and extends from the base end portion in the extending direction. Item 3. The liquid ejecting apparatus according to Item 2. A medium support for supporting the medium;
A transport mechanism for transporting the medium toward the medium support portion in the transport direction;
A driving source;
A driving force transmission mechanism for transmitting the driving force of the driving source to the cap;
With
The cap is disposed at a position aligned with the medium support portion in the axial direction,
The driving force transmission mechanism is disposed upstream of the cap in the transport direction,
The liquid ejecting apparatus according to any one of claims 1 to 3, wherein the tube is extended in the extending direction from the cap toward the downstream in the transport direction. The cap is connected to a vent tube for communicating with the atmosphere inside the cap as the tube.
5. An air release valve that is movable between a closed position for closing the tip of the vent tube and an open position for opening the tip of the vent tube is disposed downstream of the cap in the transport direction. The liquid ejecting apparatus described. A wiper for wiping the liquid ejecting portion;
A wiper holder that moves the wiper to a wiping position that can contact the liquid ejecting unit by holding the wiper and moving along the extending direction;
A valve body holding member that holds the air release valve in a movable state between the closed position and the open position;
With
The wiper is disposed between the cap and the medium support in the axial direction;
The wiper holder moves the atmosphere release valve by pressing the valve body holding member along with the movement along the extending direction,
The liquid ejecting apparatus according to claim 5, wherein when the wiper is disposed at the wiping position as the wiper holder moves in the extending direction, the atmosphere release valve is disposed at the closed position. The liquid ejecting apparatus according to claim 6, wherein the wiper holder is moved by a driving force of the driving source transmitted via the driving force transmission mechanism. The transport mechanism includes a transport roller for transporting the medium,
The liquid ejecting apparatus according to claim 4, wherein the drive source is a drive motor that rotates the transport roller.