JP5919826B2 - Maintenance device and liquid ejection device - Google Patents

Description

  The present invention relates to a maintenance apparatus and a liquid ejecting apparatus including the apparatus.

  Conventionally, as a kind of liquid ejecting apparatus, an ink jet printer that performs printing by ejecting ink as a kind of liquid onto a medium such as a sheet from a nozzle formed in a liquid ejecting head is widely known.

  Such a printer includes a wiper that wipes off unnecessary ink adhering to the nozzle formation surface of the liquid ejecting head in order to appropriately eject ink from the liquid ejecting head to the medium. In other words, unnecessary ink on the nozzle forming surface is wiped off by the wiper by moving the wiper relative to the liquid ejecting head while pressing the wiper against the nozzle forming surface of the liquid ejecting head.

  At the time of wiping, it is desirable that a clean wiper whose wiping surface is not soiled wipes the liquid ejecting head and reliably wipes ink from the nozzle forming surface. Therefore, recently, for example, as described in Patent Document 1, a wiper cleaner that scrapes off ink adhering to a wiper and an ink absorber that absorbs and removes ink scraped off by the wiper cleaner are provided. A maintenance device for a liquid ejecting apparatus has been proposed.

Japanese Patent Laid-Open No. 10-323988

  By the way, if the ink scraped from the wiper with the wiper cleaner is left as it is for a long time without being absorbed by the ink absorbing material, the ink may solidify as the ink solvent in the ink evaporates. In this regard, in the maintenance device described in Patent Document 1, the ink absorbing material does not contact the wiper cleaner until the cap device rises to cap the nozzle formation surface of the liquid ejecting head, such as when the power is turned off. Absent. For this reason, the ink scraped off from the wiper by the wiper cleaner is left for a long time, and there is a problem that the ink is solidified while attached to the wiper cleaner.

  The present invention has been made in view of such circumstances, and the object thereof is to provide a maintenance device and the same device that can absorb and remove the liquid adhering to the wiper cleaner at an appropriate timing without solidifying. The object is to provide a liquid ejecting apparatus.

  In order to achieve the above object, a maintenance apparatus according to the present invention is a maintenance apparatus that maintains a liquid ejecting head that ejects liquid from a nozzle to the medium while being supported by a moving body that moves in the scanning direction with respect to the medium. A cap that contacts the liquid ejecting head so as to surround the nozzle; a cap moving mechanism that moves the cap in a direction toward and away from the liquid ejecting head; and the liquid ejecting head attached to the liquid ejecting head A wiper for wiping off the liquid being wiped, a wiper cleaner for removing the liquid adhering to the wiper by abutting against the wiper, and a liquid adhering to the wiper cleaner abutting against the wiper cleaner To be absorbed by the liquid absorbing material and the moving body moving in the scanning direction. And a liquid absorbing material moving mechanism is brought into contact with the wiper cleaner by moving the liquid absorbing member by the cap moving mechanism and the liquid absorbing material moving mechanism is driven separately.

  According to the above configuration, since the cap moving mechanism that moves the cap and the liquid absorbent material moving mechanism that moves the liquid absorbent material are driven separately, the liquid absorbent material can be moved at an arbitrary timing regardless of the cap operation. Thus, the liquid adhering to the wiper cleaner can be absorbed without leaving for a long time. Therefore, the liquid adhering to the wiper cleaner can be absorbed and removed at an appropriate timing without solidifying.

  Further, in the maintenance device of the present invention, the liquid absorbent material moving mechanism includes a rotating member that rotates about an axis extending in a direction intersecting the scanning direction, and the rotating member includes the scanning member. When the first abutting portion at a position away from the rotation center is pressed by the moving body moving in the direction and rotated, the first abutting portion is separated from the rotation center at a portion different from the first abutting portion. When the second contact portion of the part is rotationally displaced, a pressing force for moving the liquid absorbent material in a direction in contact with the wiper cleaner is generated.

  According to the above configuration, there is no need to provide a new drive source in order to operate the liquid absorbent material moving mechanism, and the liquid absorbent material can be applied to the wiper cleaner with a simple configuration using a pressing force obtained from an existing moving body. It can be made to contact.

In the maintenance device of the present invention, the rotating member has a longer distance from the rotation center to the second contact portion than a distance from the rotation center to the first contact portion.
According to the above configuration, when the first abutting portion is pressed by the moving body and the rotating member is rotated, the second abutting portion is displaced compared to the displacement amount by which the first abutting portion is displaced. The displacement is larger. That is, the moving body can move the second abutting portion greatly with a small amount of movement after contacting the first abutting portion of the rotating member, and efficiently moves the liquid absorbent toward the wiper cleaner. be able to.

  In the maintenance device of the present invention, the rotating member includes a straight line extending from the rotation center toward the first contact portion and a straight line extending from the rotation center toward the second contact portion. It is formed in a shape that intersects at an angle of less than 180 degrees.

  According to the above configuration, the pressing force that the rotating member receives from the moving body via the first contact portion is efficiently converted to the pressing force that the second contact portion presses the liquid absorbent in the direction of contacting the wiper cleaner. can do.

  In the maintenance device of the present invention, in the state where the rotating member is not pressed by the moving body, the rotation center is closer to the moving body than the first contact portion in the scanning direction. To position.

  According to the above configuration, in the scanning direction in which the moving body moves, the rotating member moves compared to the case where the distance from the moving body to the first contact portion of the rotating member is equal to the distance to the rotation center. When pressed against the body via the first contact portion, the body easily rotates in the direction of pressing the liquid absorbent material via the second contact portion.

In the maintenance device of the present invention, the rotating member rotates when the convex portion provided on the surface portion of the movable body along the scanning direction and the first contact portion come into contact with each other.
According to the above configuration, from the rotation center of the rotation member to the first contact portion as compared with the configuration in which the side surface orthogonal to the scanning direction of the moving body contacts the first contact portion and the rotation member rotates. Therefore, the liquid absorbent and the liquid absorbent moving mechanism can be made compact.

In the maintenance device of the present invention, the rotating member has a first contact portion that contacts the moving body and a second contact portion that contacts the liquid absorbent material in a curved shape.
According to the above configuration, the rotating member can smoothly come into sliding contact with the moving body and the liquid absorbent material.

In the maintenance device of the present invention, the liquid absorbent material is always urged by the urging member in a direction away from the wiper cleaner.
According to the above configuration, after the liquid absorbent material comes into contact with the wiper cleaner and absorbs the liquid, even if the wiper cleaner and the liquid absorbent material are likely to adhere due to the adhesive force of the liquid, Can be peeled off.

  The liquid ejecting apparatus of the present invention includes a moving body that moves in the scanning direction with respect to the medium, a liquid ejecting head that ejects liquid from the nozzle to the medium while being supported by the moving body, and maintenance of the above configuration. An apparatus.

  According to the above configuration, the same effect as that of the maintenance device can be obtained in the liquid ejecting apparatus.

1 is a perspective view of a printer according to an embodiment of the present invention. The schematic front view of a maintenance apparatus. The schematic front view of an ink absorption unit. The front view which shows the raising process of the wiper at the time of wiping. The front view which shows the wiping process of the nozzle formation surface at the time of wiping. The front view which shows the ink scraping process from the wiper at the time of wiping. The front view which shows the descent process of the wiper at the time of wiping. The front view which shows the state just before the rotation lever at the time of wiping enters into a rotation process. The enlarged view of the principal part in FIG. FIG. 6 is a front view showing an ink absorption process during wiping. The enlarged view of the principal part in FIG.

Hereinafter, an embodiment in which the present invention is embodied in an ink jet printer (hereinafter also referred to as “printer”) will be described with reference to the drawings.
As shown in FIG. 1, a sheet P which is an example of a medium along a longitudinal direction (= scanning direction X with respect to the medium) is disposed in a lower portion in a frame 12 having a substantially rectangular box shape in a printer 11 as a liquid ejecting apparatus. A support base 13 is extended to support the recording at the time of recording. Then, on this support base 13, the paper P is fed in the short direction of the support base 13 (= conveyance of the paper P) by a paper feed mechanism (not shown) based on driving of a paper feed motor 14 provided at the lower back of the frame 12. Feed along direction Y).

  A guide shaft 15 is installed above the support base 13 in the frame 12 along the longitudinal direction of the support base 13. A carriage 16 as a moving body is supported on the guide shaft 15 so as to be able to reciprocate along the axial direction of the guide shaft 15.

  A driving pulley 17a and a driven pulley 17b are rotatably supported at positions corresponding to both ends of the guide shaft 15 on the inner surface of the frame 12. An output shaft of a carriage motor 18 serving as a drive source for reciprocating the carriage 16 is connected to the drive pulley 17a, and an endless shape in which a part is connected to the carriage 16 between the pair of pulleys 17a and 17b. The timing belt 17 is hung. Accordingly, the carriage 16 is movable in the axial direction of the guide shaft 15 via the endless timing belt 17 by the driving force of the carriage motor 18 while being guided by the guide shaft 15.

  A recording head 19 as a liquid ejecting head is provided on the surface of the carriage 16 facing the paper P, and a plurality of inks as liquid are ejected onto the nozzle forming surface 19a which is the lower surface of the recording head 19 (FIG. 2). Are formed with only four nozzles 19b. On the other hand, an ink cartridge 16 a for supplying ink to the recording head 19 is detachably mounted on the carriage 16.

  Then, the ink supplied from the ink cartridge 16 a to the recording head 19 is ejected from the nozzles 19 b of the recording head 19 onto the paper P fed onto the support base 13, thereby performing printing. In the frame 12, in the home position area (non-printing area) that does not correspond to the conveyance area (printing area) of the paper P in the scanning direction X, maintenance such as cleaning and wiping of the recording head 19 is performed during non-printing. The maintenance device 20 is provided.

  As shown in FIG. 2, the maintenance device 20 provided in the home position area includes a wiper unit 21, a cap unit 22, and an ink absorption unit 23. Each of the units 21 to 23 is disposed below the moving space area of the carriage 16 that reciprocates in the scanning direction X. Specifically, the wiper unit 21 is the position closest to the support base 13 among the units 21 to 23 in the scanning direction X, and is the side surface on the print region side of the carriage 16 stopped at the home position (the left end in FIG. 2). Is disposed at a position closer to the printing area than the surface.

  The ink absorbing unit 23 is the position farthest from the support base 13 among the units 21 to 23 in the scanning direction X, and is the side surface opposite to the printing area of the carriage 16 stopped at the home position (FIG. 2). Then, it is arranged at a position below the lower edge of the right end surface). The remaining one cap unit 22 is located between the wiper unit 21 and the ink absorbing unit 23 in the scanning direction, and is on the nozzle forming surface 19a of the recording head 19 mounted on the carriage 16 stopped at the home position. It is arranged at a position to be lower.

  On the other hand, of the surface portion of the carriage 16 along the scanning direction X that exposes the nozzle forming surface 19a of the recording head 19 (the lower surface in FIG. 2), the ink is ejected when the carriage 16 stops at the home position. A convex portion 28 is formed in a surface area facing the absorption unit 23 (a surface area closer to the right end in FIG. 2). As shown in FIG. 2, the convex portion 28 is formed so as to protrude downward from the nozzle forming surface 19 a of the recording head 19, and the corner portion on the printing region side in the scanning direction X has a substantially right-angle cross section. On the other hand, a wiper cleaner 28a having a bent surface shape is formed on the other side, and the other corner portion on the opposite side of the printing region in the scanning direction X is formed on a pressing portion 28b having a circular arc shape in a cross section and a curved surface shape.

  As shown in FIG. 2, the wiper unit 21 includes a wiper support 24 that moves up and down between an upper wiping position and a lower non-wiping position based on driving of a lifting mechanism (not shown), and the wiper support 24. And a wiper 25 supported so as to extend toward the moving space side of the carriage 16. The wiper 25 is formed of an elastic material such as rubber, and when the wiper 25 wipes the nozzle forming surface 19a of the recording head 19, the wiper 25 is in sliding contact with the nozzle forming surface 19a with elastic deformation.

  The cap unit 22 includes a bottomed square box-shaped cap 27 corresponding to the nozzle forming surface 19 a of the recording head 19, a substantially box-shaped cap holding part 26 that holds the cap 27, and a cap holding part 26. A cap moving mechanism 26 a that moves in the vertical direction together with the cap 27 is provided. When the cap 27 is lifted together with the cap holding portion 26 based on the driving of the cap moving mechanism 26a, the cap 27 contacts the recording head 19 so as to surround the nozzle 19b formed on the nozzle forming surface 19a.

  In the cap moving mechanism 26a, for example, a pinion provided on the cap holding part 26 side meshes with a rack extending in the vertical direction, and the cap 27 rises together with the cap holding part 26 by rotating the pinion. Although configured by a mechanism or the like, other configurations may be used. For example, the cap moving mechanism 26a may be configured by a mechanism in which the cam surface of the cam eccentrically rotated by the drive motor pushes the cap holding portion 26 up and down.

  Further, as shown in FIG. 3, the ink absorbing unit 23 holds an ink absorbing material (liquid absorbing material) 31 capable of absorbing ink and the ink absorbing material 31 so as to extend toward the moving space area side of the carriage 16. In this state, an absorbent material holding portion 32 that is movable in the vertical direction and a rotation lever 33 that is rotatable in a state where a part of the absorbent material holding portion 32 is in contact with the absorbent material holding portion 32 are provided. On the lower end side opposite to the upper end side holding the ink absorbing material 31 in the absorbing material holding portion 32, there is a contact surface 32a along a smooth horizontal direction in which a part of the rotating lever 33 is slidably contacted. At the same time, a hooking portion 32b having a hook shape is formed downward from the contact surface 32a. The upper end of a tension coil spring 35 as an example of an urging member whose lower end is fixed to a part of the frame 12 is latched to the latching portion 32b. Therefore, the ink absorbing material 31 is always urged downward by the urging force of the tension coil spring 35, which is the direction away from the carriage 16.

  The rotation lever 33 is a rotation member formed in an inverted L-shaped cross section, and in the scanning direction X in which the carriage 16 moves, at a position adjacent to the absorbent material holding portion 32, a horizontal direction orthogonal to the scanning direction X ( In FIG. 3, the shaft 34 is supported so as to be rotatable with the axis of the support shaft 34 extending in the direction orthogonal to the paper surface as the rotation center RC. Specifically, one end, which is also the upper end of the rotating lever 33, is located in the movement space region of the carriage 16 (more specifically, the convex portion 28), and the other end on the lower end side is the absorbent material holding portion 32. It is located in the moving space area in the vertical direction.

  Therefore, the rotation lever 33 is pressed by the first contact portion 33a which is a part away from the rotation center RC toward one end (upper side) by the pressing portion 28b of the convex portion 28 in the carriage 16 moving in the scanning direction X. In this case, the second contact portion 33b, which is a part away from the rotation center RC to the other end side (side lower side), is rotationally displaced. Then, due to the pressing force generated with the rotation displacement, the rotation lever 33 presses and moves the absorbent material holding portion 32 against the urging force of the tension coil spring 35. At this point, the rotating lever (rotating member) 33 is pressed and displaced by the carriage (moving body) 16 to press the ink absorbing material (liquid absorbing material) 31, and the ink absorbing material 31 is wiped by the wiper cleaner. It functions as one component of the liquid absorbent material moving mechanism that moves in the direction in contact with 28a. That is, since the liquid absorbent material moving mechanism is provided separately from the cap moving mechanism 26a, the liquid absorbent material moving mechanism and the cap moving mechanism 26a can be driven independently of each other.

  In addition, in the cross-sectional shape of the rotation lever 33, a straight line extending from the rotation center RC toward the first contact portion 33a and a straight line extending from the rotation center RC toward the second contact portion 33b are 180 degrees. A shape that intersects at an angle θ less than (as an example, 135 degrees in the present embodiment), in the present embodiment, is formed in an inverted L-shaped cross section as an example. The support position of the rotation lever 33 by the support shaft 34 is from the rotation center RC to the first contact portion 33a provided at the L-shaped long side end (upper end in FIG. 3). The distance L2 from the rotation center RC to the second contact portion 33b provided at the L-shaped short side end portion (left end portion in FIG. 3) is set to be longer than the distance L1. ing.

  Further, as shown in FIG. 3, the rotating lever 33 is configured so that the first abutting portion 33 a is not pressed against the pressing portion 28 b of the carriage 16, and the second abutting portion 33 b is brought into contact with the absorbent material holding portion 32. In the state of contact with the contact surface 32a, in the scanning direction X, the rotation center RC is positioned slightly closer to the print region side (carriage 16 side) than the first contact portion 33a by a displacement t. ing. Therefore, after the carriage 16 has passed the position of the rotation center RC of the rotation lever 33 in the scanning direction X by the amount of displacement t, the pressing portion 28 b of the convex portion 28 is moved to the first contact portion of the rotation lever 33. 33a is pressed. The first contact portion 33a and the second contact portion 33b of the rotation lever 33 are formed in a curved surface shape.

Next, the operation of the printer 11 configured as described above will be described with reference to FIGS.
In the printer 11, when the recording head 19 is maintained, the carriage 16 is moved to the home position region, and various maintenance (for example, cleaning and wiping) is performed by the maintenance device 20 at the position. When ink adheres to the nozzle formation surface 19a of the recording head 19 by a cleaning operation by the cap unit 22 of the maintenance device 20, the following using the wiper unit 21 and the ink absorption unit 23 of the maintenance device 20 is performed. Maintenance operations (wiping operation, ink absorption operation) are performed.

  When performing a wiping operation for wiping off adhering ink from the nozzle forming surface 19a of the recording head 19, first, the lifting mechanism of the wiper unit 21 is driven in a state where the carriage 16 is stopped in the home position region. Then, the wiper 25 moves upward from the lower non-wiping position shown in FIG. 2 to the upper wiping position shown in FIG. 4 (the direction of arrow A in FIG. 4), and the nozzle forming surface of the recording head 19 It will be in the standby state which can wipe off 19a (rising process).

  Next, as shown in FIG. 5, the carriage 16 is moved from the home position area in the scanning direction X toward the conveyance area of the paper P (in the direction of arrow B in FIG. 5). Then, the wiper 25 is slidably brought into contact with the nozzle forming surface 19a of the recording head 19 with elastic deformation, so that the ink attached to the nozzle forming surface 19a is wiped off (wiping process).

  Then, when the carriage 16 is further moved from the state shown in FIG. 5 in the same direction (arrow B direction), the wiper 25 completes wiping of the nozzle forming surface 19a, and as shown in FIG. It abuts against the wiper cleaner 28a. When the wiper 25 is separated from the nozzle forming surface 19a, the elastically deformed wiper 25 returns to its original shape by a restoring force, and thus the ink attached to the wiper 25 may be scattered. However, since the deformation of the wiper 25 in the excessive restoring direction in such a case is restricted by the wiper cleaner 28a provided in the carriage 16, the scattering of ink into the printer 11 is suppressed.

  Further, as shown in FIG. 6, when contacting the wiper cleaner 28a, the wiper 25 is in sliding contact with the edge of the wiper cleaner 28a while being elastically deformed again. Thereby, the wiper cleaner 28a scrapes off the ink adhering to the wiper 25 and holds the ink (ink scraping process).

  Next, as shown in FIG. 7, the wiper 25 that has been lifted to wipe the nozzle forming surface 19a of the recording head 19 is moved downward (downward) in the retracting direction (the direction of arrow C in FIG. 7). process). Then, as shown in FIG. 8, in order to perform an ink absorbing operation in which the ink 29 adhering to the wiper cleaner 28a is absorbed by the ink absorbing material 31, the carriage 16 is moved from the conveyance region of the paper P toward the home position region (FIG. 8). 8 in the direction of arrow D). Then, the convex portion 28 (specifically, the pressing portion 28 b) provided on the lower surface of the carriage 16 comes into contact with the first contact portion 33 a of the rotation lever 33 in the ink absorption unit 23. At this time, the turning lever 33 has not yet started the clockwise turning operation in FIG. 8 and is in a state immediately before entering the turning process.

  Here, as shown in FIG. 9, the contact start point CP at which the first contact portion 33a of the rotation lever 33 and the pressing portion 28b of the convex portion 28 on the carriage 16 side start contact, and the rotation lever Comparing the positions in the scanning direction X with the 33 rotation centers RC, the rotation center RC of the rotation lever is located on the left side in the left-right direction in FIG. That is, when the rotation lever 33 is not pressed by the carriage 16, the rotation center RC is positioned closer to the carriage 16 than the first contact portion 33 a in the scanning direction X.

  When the carriage 16 is further moved in the same direction (arrow D direction) from the state in which the pressing portion 28b is in contact with the first contact portion 33a, as shown in FIG. The first abutting portion 33a is pushed in the same direction (arrow D direction) while being in sliding contact with the pressing portion 28b on the carriage 16 side, and as a result, the first abutting portion 33a rotates clockwise with the support shaft 34 as the rotation center RC. As the turning lever 33 is turned, the second contact portion 33b of the turning lever 33 is turned and displaced in an upward direction closer to the carriage 16 than the position shown in FIG. 9 before turning.

  Therefore, the absorbent material holding portion 32 and the ink absorbent material 31 held on the upper end side thereof that are in contact with each other via the second contact portion 33b and the lower end side contact surface 32a are also directed upward. Pushed up. Here, since the first contact portion 33a and the second contact portion 33b of the rotation lever 33 are formed in a curved shape, the rotation lever 33 allows the pressing portion 28b and the ink absorbing material 31 on the carriage 16 side to move. Smoothly slidably contacts the holding material holding portion 32 to be held.

  Then, as shown in FIG. 11, the ink absorbing material 31 comes into contact with the wiper cleaner 28 a and contracts, and the ink adhering to the wiper cleaner 28 a is absorbed by the ink absorbing material 31. Further, when the absorbent material holding part 32 is pushed up in this way, the tension coil spring 35 that is hooked on the hook part 32b of the absorbent material holding part 32 expands, and its restoring force causes the absorbent material holding part 32 to move. It works downwardly away from the wiper cleaner 28a.

  Thereafter, when the ink adhering to the wiper cleaner 28a is completely absorbed, the carriage 16 starts moving from the home position area toward the conveyance area for the purpose of restarting printing or capping the nozzle forming surface 19a. . When the carriage 16 moves in the same direction (arrow B direction), the contact state between the pressing portion 28b of the convex portion 28 on the carriage 16 side and the first contact portion 33a on the rotating lever 33 side is eliminated. Then, the rotating lever 33 that has been rotated in the clockwise direction and the absorbent material holding portion 32 that has been pushed up by the rotating lever 33 are returned to the initial positions shown in FIG.

  Note that when the ink absorbing material 31 and the wiper cleaner 28a come into contact with each other, the ink absorbing material 31 and the wiper cleaner 28a may be bonded due to the adhesive force of the ink adhering to the wiper cleaner 28a. However, even in such a case, in the present embodiment, the ink absorbing material 31 can be stably returned to the original arrangement shown in FIG. 2 by the restoring force of the tension coil spring 35 hooked on the absorbing material holding portion 32. .

According to the above embodiment, the following effects can be obtained.
(1) The maintenance device 20 is provided with a cap moving mechanism 26a for moving the cap 27 and a liquid absorbing material moving mechanism (rotating lever 33) for moving the ink absorbing material 31, and can be driven independently. . Therefore, the ink 29 adhering to the wiper cleaner 28a can be absorbed without being left for a long time by moving the ink absorbing material 31 at an arbitrary timing irrespective of the cap operation. Therefore, the ink 29 adhering to the wiper cleaner 28a can be absorbed and removed at an appropriate timing without solidifying.

  (2) It is not necessary to provide a new drive source to operate the liquid absorbent material moving mechanism (rotating lever 33), and the wiper cleaner 28a has a simple configuration using the pressing force obtained from the existing carriage 16. The ink absorbing material 31 can be brought into contact.

  (3) The rotation lever 33 is configured such that the distance L2 from the rotation center RC to the second contact portion 33b is longer than the distance L1 from the rotation center RC to the first contact portion 33a. When the first contact portion 33a is pressed and rotated by the carriage 16, the displacement amount at which the second contact portion 33b is displaced is larger than the displacement amount at which the first contact portion 33a is displaced. Become. That is, the carriage 16 can move the second contact portion 33b greatly with a small amount of movement after contacting the first contact portion 33a of the rotation lever 33, and the ink absorbing material 31 can be efficiently moved to the wiper cleaner 28a. Can be moved toward.

  (4) The rotation lever 33 has an angle θ between a straight line extending from the rotation center RC toward the first contact portion 33a and a straight line extending from the rotation center RC toward the second contact portion 33b being less than 180 degrees. It is formed in a shape that intersects. For this reason, the pressing force received from the carriage 16 via the first contact portion 33a can be efficiently converted into the pressing force by which the second contact portion 33b presses the ink absorbing material 31 in the direction in contact with the wiper cleaner 28a. it can.

  (5) In the scanning direction X in which the carriage 16 moves, the rotation center RC is positioned slightly closer to the printing region side, that is, the carriage 16 side than the first contact portion 33a by a positional deviation amount t. Therefore, as compared with the case where the distance from the carriage 16 to the first contact portion 33a of the rotation lever 33 is equal to the distance to the rotation center RC, the rotation lever 33 is interposed between the carriage 16 and the first contact portion 33a. When pressed, it becomes easy to rotate in the direction of pressing the ink absorbing material 31 via the second contact portion 33b.

  (6) The rotating lever 33 is located in a space in which the pressing portion 28b, which is a part of the convex portion 28 protruding from the lower surface of the carriage 16, moves in the scanning direction X. Accordingly, the first contact portion from the rotation center RC of the rotation lever 33 is compared with the configuration in which the side surface of the carriage 16 orthogonal to the scanning direction X and the first contact portion 33a abut and the rotation lever 33 rotates. Since the length up to 33a can be shortened, the ink absorbing material 31 and the liquid absorbing material moving mechanism (rotating lever 33) can be made compact.

  (7) Since the first contact portion 33a and the second contact portion 33b of the rotation lever 33 are formed in a curved surface shape, the rotation lever 33 allows the pressing portion 28b and the ink absorbing material 31 on the carriage 16 side to move. The absorber holding part 32 to hold | maintain can be slidably contacted smoothly.

  (8) The ink absorbing material 31 is urged by the tension coil spring 35 in the direction away from the wiper cleaner 28a. Therefore, after the ink absorbing material 31 comes into contact with the wiper cleaner 28a and absorbs the ink 29, even if the wiper cleaner 28a and the ink absorbing material 31 are likely to adhere due to the adhesive force of the ink 29, the tension coil spring 35 is restored. Both can be peeled off by force.

  (9) The wiper cleaner 28 a that scrapes the ink 29 adhering to the wiper 25 and the pressing portion 28 b that contacts the first contact portion 33 a of the rotating lever 33 and presses the rotating lever 33 are integrated with the convex portion 28. Therefore, the number of parts can be reduced.

  (10) Since the ink absorbing material 31 is provided not in the carriage 16 but in the home position region, the ink absorbing material 31 in a state where unnecessary ink is absorbed does not reciprocate in the printing region together with the carriage 16. The absorbed ink does not contaminate the paper P.

  (11) The amount of interference between the wiper cleaner 28 a and the ink absorbing material 31 can be adjusted by changing the distance between the carriage 16 and the support base 13. Thereby, the ink adhering to the wiper cleaner 28a can be effectively absorbed with an appropriate amount of interference.

In addition, you may change the said embodiment as follows.
The wiper unit 21 and the ink absorption unit 23 may be provided in a non-printing area (so-called full digit side area) opposite to the home position area.

  In the above embodiment, the cap 27 may be a slider-type cap that uses the movement of the carriage 16 to bring the cap 27 into contact with the nozzle forming surface 19a. In this case, the wiper unit 21 and the ink absorption unit 23 are provided in the non-printing area opposite to the home position area in order to perform the cap operation and the ink absorption operation separately.

  Instead of performing the ink absorption operation from the wiper cleaner 28a following the wiping operation for wiping ink from the nozzle forming surface 19a, for example, one ink absorption operation may be performed for a plurality of wiping operations. Good.

  In the above embodiment, the liquid ejecting apparatus is embodied in the ink jet printer 11, but may be embodied in a liquid ejecting apparatus that ejects or discharges liquid other than ink. The present invention can be used for various liquid ejecting apparatuses including a liquid ejecting head that ejects a minute amount of liquid droplets. In addition, a droplet means the state of the liquid discharged from the said liquid ejecting apparatus, and shall also include what pulls a tail in granular shape, tear shape, and thread shape. The liquid here may be any material that can be ejected by the liquid ejecting apparatus. For example, it may be in a state in which the substance is in a liquid phase, such as a liquid with high or low viscosity, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melts ) And a liquid as one state of a substance, as well as a material in which particles of a functional material made of a solid such as a pigment or metal particles are dissolved, dispersed or mixed in a solvent. Further, representative examples of the liquid include ink and liquid crystal as described in the above embodiment. Here, the ink includes general water-based inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks. As a specific example of the liquid ejecting apparatus, for example, a liquid containing a material such as an electrode material or a color material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, a color filter, or the like in a dispersed or dissolved state. There is a liquid ejecting apparatus for ejecting. Alternatively, it may be a liquid ejecting apparatus that ejects a bio-organic material used for biochip manufacturing, a liquid ejecting apparatus that ejects a liquid that is used as a precision pipette and a sample, a printing apparatus, a micro dispenser, or the like. In addition, transparent resin liquids such as UV curable resin to form liquid injection devices that pinpoint lubricant oil onto precision machines such as watches and cameras, and micro hemispherical lenses (optical lenses) used in optical communication elements. A liquid ejecting apparatus that ejects a liquid onto the substrate or a liquid ejecting apparatus that ejects an etching solution such as an acid or an alkali to etch the substrate may be employed. The present invention can be applied to any one of these liquid ejecting apparatuses.

  DESCRIPTION OF SYMBOLS 16 ... Carriage (moving body), 19 ... Recording head (liquid ejecting head), 19b ... Nozzle, 20 ... Maintenance device, 25 ... Wiper, 26a ... Cap moving mechanism, 27 ... Cap, 28 ... Convex part, 28a ... Wiper cleaner , 29 ... Adhering ink (liquid), 31 ... Ink absorbing material (liquid absorbing material), 33 ... Turning lever (turning member) as one component of the liquid absorbing material moving mechanism, 33a ... First contact portion, 33b: second contact portion, 35: tension coil spring (biasing member), L1, L2: distance, P: paper (medium), RC: rotation center, X: scanning direction, θ: angle.

Claims (9)

A maintenance device for maintaining a liquid ejecting head that ejects liquid from a nozzle to a medium,
A cap that contacts the liquid ejecting head so as to surround the nozzle;
A cap moving mechanism for moving the cap in a direction toward and away from the liquid ejecting head;
A wiper for wiping off the liquid adhering to the liquid jet head;
A wiper cleaner that removes the liquid adhering to the wiper by contacting the wiper;
A liquid absorbent that absorbs the liquid adhering to the wiper cleaner by contacting the wiper cleaner;
A liquid absorbing member moving mechanism for contact with the wiper cleaner by moving the liquid absorbing material,
And the cap moving mechanism and the liquid absorbent moving mechanism are driven separately. The liquid ejecting head is supported by a moving body that moves in a scanning direction with respect to the medium,
The maintenance device according to claim 1, wherein the absorbent material moving mechanism moves the liquid absorbent material by being pressed and displaced by the moving body. The liquid absorbent material moving mechanism includes a rotating member that rotates about an axis extending in a direction intersecting the scanning direction,
The rotation member is different from the first contact portion when the first contact portion of the portion away from the rotation center is pressed by the moving body moving in the scanning direction and rotated. 2. A pressing force for moving the liquid absorbent material in a direction in contact with the wiper cleaner is generated when the second contact portion at a position away from the rotation center is rotationally displaced. The maintenance apparatus according to 2 . The rotating member, than said distance from the rotation center to the first abutment, according to claim 3 better from the rotation center of the distance to the second contact portion, wherein the longer Maintenance equipment. The rotation member has a shape in which a straight line extending from the rotation center toward the first contact portion and a straight line extending from the rotation center toward the second contact portion intersect at an angle of less than 180 degrees. The maintenance device according to claim 3 or 4 , wherein the maintenance device is formed. The rotation center of the rotation member is positioned closer to the moving body than the first contact portion in the scanning direction when the rotating member is not pressed by the moving body. The maintenance device according to any one of claims 3 to 5 . The rotary member is of claims 3 to 6, characterized in that said first contact portion and the protrusion provided on the surface portion along the scanning direction of the movable body is rotated in contact with The maintenance apparatus as described in any one of them. The maintenance device according to any one of claims 1 to 7, wherein the liquid absorbent material is always urged by a urging member in a direction away from the wiper cleaner. . A liquid ejecting head that ejects liquid from a nozzle to a medium;
The maintenance device according to any one of claims 1 to 8,
A liquid ejecting apparatus comprising: