JP2020116853A - Liquid discharge device - Google Patents

Abstract

To provide a liquid discharge device which makes a liquid less likely to adhere to a shaft serving as a rotary shaft and makes rotation failure of a blade less likely to occur.SOLUTION: A printer 10 includes; a printer head 24 having a nozzle surface 243; a wiper 101 having a blade 11 and a blade holder 112; a first frame 131; a shaft 118 supported by the first frame 131 and penetrating through the blade holder 112; and a rotation mechanism 103 which rotates the blade 111 and the blade holder 112 around the shaft 118 at a first attitude and a second attitude. The shaft 118 is located below the blade 111 at the first attitude. The blade holder 112 has: a side wall 115 through which the shaft 118 penetrates; and a partition wall 113 located between the shaft 118 and the blade 111. When the blade 111 is at the first attitude, a lower end of the partition wall 111 is located below a lower end of a side wall 114.SELECTED DRAWING: Figure 6

Description

The present invention relates to a liquid ejection device in which a blade that wipes a nozzle surface is rotated.

2. Description of the Related Art A printing device is known in which printing is performed by attaching ink ejected from nozzle holes of a print head to a sheet. In this printing apparatus, maintenance called purge may be performed in which ink is forcibly discharged from the head. After purging, ink is attached to the nozzle surface of the head. The ink attached to the nozzle surface is wiped by the blade of the wiper. Some wiper blades are driven by a motor and rotate (see Patent Documents 1 and 2).

JP, 2017-43052, A JP, 2013-173319, A

In the configuration in which the blade rotates around the shaft, if the ink adheres to the shaft, the blade may fail to rotate. In order to eliminate the rotation failure, maintenance is required to remove ink from the shaft and the like, which is difficult for the user to carry out.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a liquid ejecting apparatus in which liquid does not easily adhere to a shaft that serves as a rotating shaft and rotation failure of a blade hardly occurs. is there.

The liquid ejection apparatus according to the present invention includes a head having a nozzle surface on which a nozzle capable of ejecting a liquid is formed, a wiper having a blade and a blade holder for supporting the blade, a frame, and a frame supported by the frame. A shaft penetrating the blade holder, a first posture in which the blade can contact the nozzle surface of the head, and a second posture different from the first posture, and the blade and the blade holder are arranged around the shaft. And a rotating mechanism for rotating the same. The shaft is located below the blade in the first posture. The blade holder has a through wall through which the shaft penetrates, and a partition wall at least a part of which is located between the shaft and the blade. In the first posture, the lower end of the partition wall is located below the lower end of the through wall.

Since the partition wall is located between the shaft and the blade, the liquid attached to the blade is suppressed from moving to the shaft. Further, since the lower end of the partition wall is located below the lower end of the penetration wall, it is difficult for the liquid flowing down along the partition wall to flow into the penetration wall. As a result, the liquid is suppressed from flowing from the partition wall to the shaft.

Further, the present invention is a wiping device which can be attached to a liquid ejecting apparatus having a head having a nozzle surface in which a nozzle hole capable of ejecting a liquid is provided, the wiper having a blade and a blade holder supporting the blade. A frame, a shaft supported by the frame and penetrating the blade holder, a first posture in which the blade can contact the nozzle surface of the head, and a second posture different from the first posture. And a rotating mechanism for rotating the blade and the blade holder around the shaft. The shaft is located below the blade in the first posture. The blade holder has a through wall through which the shaft penetrates, and a partition wall at least a part of which is located between the shaft and the blade. In the first posture, the lower end of the partition wall is located below the lower end of the through wall.

According to the present invention, the liquid is unlikely to adhere to the shaft that serves as the rotating shaft, and the defective rotation of the blade is unlikely to occur.

FIG. 1 is a perspective view of a front wall 31 side of the printing device 10. FIG. 2 is a sectional view showing a II-II section of FIG. 1. FIG. 3 is a cross-sectional view showing a III-III cross section of FIG. 1. FIG. 4 is a cross-sectional view showing the IV-IV cross section of FIG. 1. FIG. 5 is a perspective view showing the appearance of the maintenance unit 100. FIG. 6 is a perspective view showing the appearance of the wiper 101. FIG. 7 is a cross-sectional view showing a VII-VII cross section of FIG. 6. FIG. 8 is a perspective view showing appearances of the first frame 131 and the third frame 133. FIG. 9 is a perspective view showing appearances of the first frame 131 and the third frame 133. FIG. 10 is a perspective view showing appearances of the first frame 131 and the third frame 133. FIG. 11 is a perspective view showing appearances of the first frame 131 and the third frame 133. FIG. 12 is a front view showing the front surfaces of the first frame 131 and the third frame 133. FIG. 13 is a rear view showing the rear surfaces of the first frame 131 and the third frame 133. FIG. 14 is a perspective view showing appearances of the second frame 132 and the third frame 133. FIG. 15 is a perspective view showing appearances of the second frame 132 and the third frame 133. FIG. 16 is a cross-sectional view of the maintenance unit 100 along the up-down direction 7 and the left-right direction 9 for explaining the wiping operation. FIG. 17 is a cross-sectional view of the maintenance unit 100 along the up-down direction 7 and the left-right direction 9 for explaining the cleaning operation.

Hereinafter, the printing device 10 according to the embodiment of the present invention will be described. The embodiment described below is merely an example of the present invention, and it goes without saying that the embodiment can be appropriately changed without changing the gist of the present invention. Further, in the following description, the progress from the start point of the arrow toward the end point is expressed as the direction, and the traffic on the line connecting the start point and the end point of the arrow is expressed as the direction. Further, in the following description, the up-down direction 7 is defined with reference to the state in which the printing apparatus 10 is installed so as to be usable (the state in FIG. 1), and the side where the discharge port 13 is provided is the front side (front side). The front-back direction 8 is defined as, and the left-right direction 9 is defined when the printer 10 is viewed from the front side (front side).

[External Configuration of Printing Device 10]
As shown in FIG. 1, a printing device 10 (an example of a liquid ejection device) records an image on roll paper 11 (see FIG. 2) or the like by an inkjet recording method. The housing 14 has a substantially rectangular parallelepiped shape in which the outlet 13 is formed in the front wall 31. The outlet 13 is located on the right side of the front wall 31. The housing 14 has a size such that it can be placed on a desk. That is, the printing device 10 is suitable for being used by being placed on a desk. Of course, the printing device 10 may be used by being placed on the floor surface.

The operation panel 17 is located to the left of the outlet 13 in the front wall 31. The operation panel 17 has, for example, a display and input keys. The user makes an input on the operation panel 17 for operating the printing apparatus 10 and confirming various settings.

The cover 16 is provided below the operation panel 17. When the cover 16 is opened, the internal space of the housing 14 is exposed. A tank 70 (see FIG. 2) described later is located behind the cover 16. The cover 16 in the closed state is a part of the front wall 31 of the housing 14.

[Internal Configuration of Printing Device 10]
As shown in FIGS. 3 and 4, a partition wall 71 is provided in the internal space of the housing 14. The partition wall 71 is a wall that extends in the up-down direction 7 and the front-rear direction 8. In other words, the partition wall 71 extends in the up-down direction 7 and the front-rear direction 8. As shown in FIG. 3, the upper end of the partition wall 71 is connected to the rear wall 33 of the housing 14, and the lower end of the partition wall 71 is connected to the lower wall 34 of the housing 14. As shown in FIG. 4, the front end of the partition wall 71 is connected to the front wall 31 of the housing 14, and the rear end of the partition wall 71 is connected to the rear wall 32 of the housing 14.

The internal space of the housing 14 includes a first space 81 and a second space 82. The first space 81 is a part to the right of the partition wall 71 in the internal space of the housing 14. The second space 82 is a part of the internal space of the housing 14 to the left of the partition wall 71. That is, the partition wall 71 is located between the first space 81 and the second space 82. The partition wall 71 has an opening 72. The first space 81 and the second space 82 are connected to each other through the opening 72.

As shown in FIG. 4, the transport path 22 is formed in the first space 81. In the first space 81, the roll paper 11 (see FIGS. 2 and 3), the feeding roller 20 (see FIG. 2), the feeding roller 21, the first conveying roller pair 54, the second conveying roller pair 55, and the platen 25. , And a heater 26 are arranged. The tank 70, the cap 73, the control board 74, the power supply circuit 75, and the maintenance unit 100 (an example of a wiping device) are arranged in the second space 82. The print head 24 includes a carriage 241 and an ejection module 242 mounted on the carriage 241. The carriage 241 can move in the left-right direction 9. Therefore, the print head 24 can be located in both the first space 81 and the second space 82.

As shown in FIGS. 2 to 4, the print head 24 has two ejection modules 242. The two ejection modules 242 are arranged apart from each other in the front-rear direction 8 of the print head 24. In each discharge module 242, a plurality of nozzles 30 are arranged side by side in the left-right direction 9.

As shown in FIG. 2, the first space 81 has a sheet storage space 15 that can store the roll paper 11. The sheet storage space 15 is formed in the rear part of the first space 81. The sheet accommodation space 15 is a space defined by the partition wall 18. In the sheet storage space 15, the roll paper 11 is stored with the left-right direction 9 as the roll axial direction. The seat housing space 15 is open upward in the rear part. A gap 29 through which the sheet pulled out from the roll paper 11 can pass is formed between the partition wall 18 and the rear wall 32.

The feeding roller 20 is located in the sheet storage space 15. The feeding roller 21 is located right above the sheet storage space 15 in the first space 81. The sheet pulled backward from the roll paper 11 is wound around the feeding roller 20 and extends upward, and is further wound around the feeding roller 21 and extends forward. The uppermost position of the circumferential surface of the feeding roller 21 is the same as the outlet 13 in the up-down direction 7.

As shown in FIGS. 2 and 4, a transport path 22 is formed between the feeding roller 21 and the discharge port 13. The transport path 22 extends substantially linearly. The transport path 22 is a space through which a sheet can pass. Although not shown in detail in each drawing, the transport path 22 is demarcated by a guide member, a print head 24, a platen 25, a heater 26, etc. which are located apart in the up-down direction 7. In the transport path 22, the forward direction is the transport direction.

As shown in FIG. 2, a first transport roller pair 54 is provided in the transport path 22 upstream of the print head 24 in the transport direction. The first transport roller pair 54 has a first transport roller 60 and a pinch roller 61. A second transport roller pair 55 is provided downstream of the heater 26 in the transport direction in the transport path 22. The second transport roller pair 55 has a second transport roller 62 and a pinch roller 63. The rotation of a motor (not shown) is transmitted to the first transport roller 60 and the second transport roller 62 to rotate. The first transport roller pair 54 and the second transport roller pair 55 rotate the first transport roller 60 and the second transport roller 62 in a state in which the sheet extending from the roll paper 11 is sandwiched between the respective rollers forming the first transport roller pair 54 and the second transport roller pair 55. By doing so, the sheet is conveyed in the conveying direction.

The print head 24, the platen 25, and the heater 26 are located in the transport path 22 between the first transport roller pair 54 and the second transport roller pair 55. Further, no other transport roller is located in the transport path 22 between the first transport roller pair 54 and the second transport roller pair 55.

The carriage 241 is supported in the internal space of the housing 14 by a pair of guide rails (not shown) arranged at intervals in the front-rear direction 8. Each of the pair of guide rails extends from the first space 81 to the second space 82. The opening 72 is located between the pair of guide rails in the front-rear direction 8. The carriage 241 is connected to a motor (not shown) via a known belt mechanism. As a result, the carriage 241 can move along the left-right direction 9 together with the ejection module 242. A known structure can be adopted for moving the carriage 241 other than the belt mechanism.

The transport path 22 extends along the front-rear direction 8 at a position facing the print head 24 in the up-down direction 7. That is, the left-right direction 9 in which the print head 24 moves is orthogonal to the front-back direction 8 in which the transport path 22 extends. The direction in which the print head 24 moves may intersect with the direction in which the transport path 22 extends, and does not necessarily have to be orthogonal.

The print head 24 is movable between a first position shown by solid lines in FIGS. 3 and 4 and a second position shown by broken lines in FIGS. 3 and 4. The print head 24 in the first position is located in the first space 81. The print head 24 in the second position is located in the second space 82. The print head 24 passes through the opening 72 when moving from the first position to the second position and when moving from the second position to the first position. That is, the opening 72 has a size that allows the print head 24 to pass therethrough.

The print head 24 at the first position faces the platen 25 with the transport path 22 in between at the downstream of the first transport roller pair 54 in the transport direction, and is located above the platen 25 and the transport path 22. .. The print head 24 at the second position is retracted from the transport path 22 to the left. The print head 24 in the second position faces the cap 73 and is located above the cap 73. The arrangement of the two caps 73 corresponds to the arrangement of the two ejection modules 242 of the print head 24 located above.

The print head 24 ejects ink from the plurality of nozzles 30 (an example of nozzle holes) toward the transport path 22 and the platen 25 (or the sheet supported by the platen 25) at the first position. The print head 24 ejects ink from the plurality of nozzles 30 toward the space inside the cap 73 at the second position.

As shown in FIG. 4, the plurality of nozzles 30 are formed side by side in the left-right direction 9 on the lower surface of the ejection module 242. Note that, in FIG. 4, the plurality of nozzles 30 is shown in only one row in each ejection module, but the plurality of nozzles 30 are provided in a plurality of rows in one ejection module 242 in the transport direction. When the print head 24 is located at the first position, both ends in the left-right direction 9 of the plurality of nozzles 30 face both ends in the left-right direction 9 of the transport path 22. As shown in FIG. 4, the tank 70 is located behind the cover 16 in the second space 82. Ink is stored in the tank 70. Although not shown, ink is supplied from the tank 70 to the print head 24 through the tube 76.

The ink is a liquid containing a pigment, resin fine particles, etc., and is a so-called latex ink. The ink has a viscosity suitable for uniformly dispersing the pigment and resin fine particles. The pigment is the color of the ink. The resin fine particles are for adhering the pigment to the sheet, and are, for example, a synthetic resin whose glass transition temperature is exceeded by the heating of the heater 26. The latex ink contains other known components as a composition.

As shown in FIGS. 2 and 3, the platen 25 is located below the print head 24 in the first position. The upper surface of the platen 25 is a supporting surface of the sheet. Although not shown in each drawing, an opening for generating a suction pressure is formed on the upper surface of the platen 25. The sheet is brought into close contact with the upper surface of the platen 25 by the suction pressure generated on the upper surface of the platen 25.

The print head 24 in the second position faces the cap 73 and is located above the cap 73.

The cap 73 is connected to the motor 78 via a transmission gear and a cam, and is movable in the up-down direction 7 when the driving force is transmitted from the motor 78. Specifically, the cap 73 is movable between a cap position shown by a broken line in FIG. 3 and an uncap position shown by a solid line in FIG. The cap 73 at the cap position is in close contact with the lower surface of the print head 24 from below and covers the plurality of nozzles 30 from below. The state of the cap 73 and the print head 24 at this time is a cap state. The uncap position is below the cap position. The cap 73 at the uncap position is separated from the plurality of nozzles 30. At this time, the plurality of nozzles 30 are exposed without being covered by the cap 73. The state of the cap 73 and the print head 24 at this time is the uncapped state. The upper end of the cap 73 at the uncap position is located below the opening 72.

Note that the opening 72 is not limited to one that is partitioned by the partition wall 71 in all of the top, bottom, front, and rear (that is, the through hole provided in the partition wall 71). For example, the opening 72 may be a notch cut downward from the upper end of the partition wall 71.

One end of a tube 77 is connected to the cap 73. The tube 77 is a flexible resin tube. The other end of the tube 77 is connected to a waste ink tank (not shown). When ink is discharged from the nozzle 30 when the cap 73 is located at the cap position, the ink is discharged to the waste ink tank through the tube 77.

As shown in FIG. 2, the heater 26 is located above the transport path 22, downstream of the print head 24, and upstream of the second transport roller pair 55.

As shown in FIG. 4, the heater 26 is located downstream of the opening 72 in the transport direction. That is, the heater 26 and the opening 72 are located away from each other in the carrying direction.

The heater 26 is a so-called halogen heater. As shown in FIG. 2, the heater 26 has a halogen lamp 40, which is a heating element that emits infrared rays, a reflector 41, and a housing 42. The housing 42 has a substantially rectangular parallelepiped shape. An opening 43 is formed in the lower wall of the housing 42 along the left-right direction 9. Heat from the halogen lamp 40 and the reflection plate 41 is radiated to the outside through the opening 43. The halogen lamp 40 is located in the internal space of the housing 42. The halogen lamp 40 has an elongated cylindrical shape, and the left-right direction 9 is the longitudinal direction. The reflection plate 41 is located above the halogen lamp 40 in the internal space of the housing 42. The reflection plate 41 is a metal plate coated with a ceramic film or the like, and is curved in an arc shape having a central axis near the opening 43. Instead of the reflector 41, a halogen lamp 40 coated with a ceramic film or the like may be used.

The heater 26 heats at least one of the sheet passing below the opening 43 and the ink attached to the sheet. In this embodiment, the heater 26 heats both the sheet and the ink. The heating of the ink causes the resin particles to undergo glass transition, and the sheet passing below the heater 26 cools, whereby the glass transition resin is cured. As a result, the ink is fixed on the sheet.

Further, as shown in FIG. 2, a board 17A connected to the operation panel 17 is provided behind the operation panel 17.

As shown in FIG. 4, the control board 74 and the power supply circuit 75 are arranged in the second space 82. The arrangement positions of the control board 74 and the power supply circuit 75 shown in FIG. 4 are examples, and the control board 74 and the power supply circuit 75 can be arranged at arbitrary positions in the second space 82.

The control board 74 is a board made of glass epoxy or the like. Further, the control board 74 is mounted with a control circuit including a CPU, a ROM, a RAM, an ASIC, and the like. The operation of the printing apparatus 10 is controlled by the CPU executing the program stored in the ROM and the ASIC performing the specified function.

The power supply circuit 75 is a circuit including a large capacity capacitor and the like. In the present embodiment, the power supply circuit 75 is mounted on a substrate made of paper phenol or the like. The power supply circuit 75 is a circuit that performs conversion of electric power for supplying electric power to each component included in the printing apparatus 10.

[Maintenance unit 100]
As shown in FIGS. 3 and 4, the maintenance unit 100 is located in the second space 82 between the first position and the second position where the print head 24 moves. The maintenance unit 100 removes the ink adhering to the lower surface of the ejection module 242 where the nozzles 30 open in the print head 24, that is, the nozzle surface 243. For example, at the second position, when the print head 24 ejects ink from the nozzle 30 into the cap 73, or the ink is sucked from the nozzle 30 due to the negative pressure in the cap 73, the ink is ejected onto the nozzle surface 243. Adheres. This ink is removed from the nozzle surface 243 by the maintenance unit 100.

As shown in FIG. 5, the maintenance unit 100 includes a wiper 101, a cleaner 102, and a rotating mechanism 103. Two wipers 101 are arranged along the front-rear direction 8. Each wiper 101 corresponds to the arrangement of the nozzles 30 of the print head 24. If the plurality of nozzles 30 of the print head 24 are divided into two groups along the front-rear direction 8, as shown in the present embodiment, the two wipers 101 arranged along the front-rear direction 8 form two nozzles. The nozzle surface 243 near the group of nozzles 30 is wiped by each wiper 101. The number of wipers 101 may be one, or may be three or more, depending on the arrangement of the nozzles 30 of the print head 24. By providing the plurality of wipers 101, one wiper 101 can be downsized. The small wiper 101 is unlikely to be distorted during molding or deformed during rotation.

Since the two wipers 101 have the same shape, the configuration will be described in detail by taking the one wiper 101 shown in FIGS. 6 and 7 as an example. The wiper 101 has a blade 111 and a blade holder 112. 5 and 6 show the wiper 101 in the first posture.

The blade 111 has a flat plate shape with a small thickness, and is made of a material that is easily elastically deformable, such as rubber or elastomer resin. The blade 111 has one end 111</b>A protruding from the blade holder 112 along the front-rear direction 8. That is, the one end 111A extends along the front-rear direction 8.

The blade holder 112 is a molded product of synthetic resin that supports the blade 111. The blade holder 112 includes a partition wall 113 having a crank-shaped cross section as shown in FIG. It has a bottom wall 115 connecting to the partition wall 113.

The partition wall 113 has an upper part 113U (an example of a third wall), a middle part 113M (an example of a first wall), and a lower part 113L (an example of a second wall). In the wire 101 in the first posture, the upper portion 113U extends in the up-down direction 7 and the front-rear direction 8. The middle portion 113M extends leftward in the left-right direction 9 from the lower end of the upper portion 113U and extends in the front-rear direction 8 and the left-right direction 9. The lower portion 113L extends downward from the lower end of the middle portion 113M in the up-down direction 7 and extends in the up-down direction 7 and the front-rear direction 8. The upper part 113U and the lower part 113L are parallel to each other. The middle part 113M is orthogonal to the upper part 113U and the lower part 113L.

The blade 111 extends upward from the upper surface of the middle portion 113M along the upper portion 113U in the up-down direction 7. The upper 113U, the middle 113M, and the lower 113L have the same dimension along the front-rear direction 8. Therefore, the ends of the upper portion 113U, the middle portion 113M, and the lower portion 113L in the front-rear direction 8 respectively form one plane at both ends in the front-rear direction 8.

The two sidewalls 114 have a flat plate shape with the front-rear direction 8 as the thickness direction. The two side walls 114 are connected to ends of the partition wall 113 in the front-rear direction 8 of the upper portion 113U, the middle portion 113M, and the lower portion 113L, respectively. The two side walls 114 respectively project leftward in the left-right direction 9 from the partition wall 113, and project rightward in the left-right direction 9 from the middle portion 113M and the lower portion 113L. Further, the lower ends of the two side walls 114 are located above the lower ends of the lower portions 113. Therefore, each side wall 114 has a portion that extends downward from both ends in the front-rear direction 8 of the middle portion 113M of the partition wall 113.

Below the lower end of the side wall 114, which is the lower portion 113L of the partition wall 113, ribs 123 extend in the left-right direction 9 from both ends in the front-rear direction 8 of the lower portion 113L. The rib 123 is continuous with the lower end of the side wall 114.

In the two side walls 114, a through hole 116 penetrating the side wall 114 along the front-rear direction 8 is formed below the middle portion 113M of the partition wall 113 and above the lower end of the lower portion 113L. The axes of the through holes 116 formed in the side walls 114 coincide with each other. Each side wall 114 has a cylindrical portion 117 protruding from the through hole 116 toward the front or rear in the front-rear direction 8, that is, in the direction in which the blade 111 does not exist. The axis of each cylindrical portion 117 matches the axis of each through hole 116.

One shaft 118 extending in the front-rear direction 8 is inserted into each through hole 116 and each cylindrical portion 117. One shaft 118 is inserted through the two blade holders 112. Each blade holder 112 is fixed to the shaft 118. That is, the shaft 118 integrally connects the two blade holders 112. The partition wall 113 is located between the blade 111 and the shaft 118 in the vertical direction 7.

The bottom wall 115 is located below the through hole 116 of the side wall 114 and above the lower end of the lower portion 113L of the partition wall 113. The bottom wall 115 extends rightward in the left-right direction 9 from the lower portion 113L of the partition wall 113. The bottom wall 115 connects the lower ends of the two side walls 114. The bottom wall 115 is parallel to the middle part 113M of the partition wall 113. A middle portion 113 of the partition wall 113 is located above the shaft 118 inserted through the through hole 116, and a bottom wall 115 is located below the shaft 118.

A rib 119 projects downward from the center of the bottom wall 115 in the front-rear direction 8 downward in the up-down direction 7. The rib 119 projects rightward from the right end of the bottom wall 115. In the rib 119, a through hole 120 penetrating the rib 119 in the front-rear direction 8 is formed on the right side of the right end of the bottom wall 115. The through hole 120 is an elongated hole in which the dimension of the through hole 116 along the radial direction is longer than the dimension of the through hole 116 along the circumferential direction. One input shaft 144 (an example of a second shaft) is inserted into each through hole 116 of the two blade holders 112.

Each of the two side walls 114 has a rib 121 that extends in parallel with the upper portion 113U of the partition wall 113 and projects in the direction in which the blade 111 exists in the front-rear direction 8. The blade 111 is located between the upper portion 113U and the rib 121. Further, the fastener 122 is located between the blade 111 and the rib 121. Each rib 121 restricts the fastener 122 from moving leftward in the left-right direction 9. The blade 111 is fixed to the blade holder 112 by being sandwiched between the upper portion 113U and the fastener 122. The blade 111 fixed to the blade holder 112 is parallel to the upper portion 113U of the partition wall 113. Therefore, the blade 111 extends along the upper portion 113U.

The rotating mechanism 103 rotates the blade holder 112 around the shaft 118 to change the attitude of the blade 111 between the first attitude and the second attitude. The blade 111 in the first posture can contact the nozzle surface 243 of the print head 24 that moves in the left-right direction 9. The blade 111 in the second posture is parallel to the nozzle surface 243 and does not contact the nozzle surface 243.

As shown in FIG. 5, the rotating mechanism 103 has a first frame 131, a second frame 132, and a third frame 133. The first frame 131 supports the wiper 101 and the gear trains 134 and 135. The second frame 132 supports the cleaner 102. The third frame 133 supports the motor 104 and the gear train 136. The gear train 136 transmits the drive of the motor 104 to the cleaner 102. The first frame 131, the second frame 132, and the third frame 133 are connected to each other.

As shown in FIGS. 8 and 9, the first frame 131 has a front wall 141, a rear wall 142, and a side wall 143. The front wall 141, the rear wall 142, and the side wall 143 are formed by bending a single metal plate. In addition to the front wall 141, the rear wall 142, and the side wall 143, the first frame 131 has a bent portion for connection with the second frame 132 and the third frame 133, connection with the housing 14, and the like. It is formed appropriately.

The front wall 141 and the rear wall 142 extend in the up-down direction 7 and the left-right direction 9. The front wall 141 and the rear wall 142 are parallel to each other and are separated from each other in the front-rear direction 8. The side wall 143 is continuous with the right end of the front wall 141 and the right end of the rear wall 142.

The shaft 118 inserted through the blade holder 112 is inserted through a through hole that passes through the front wall 141 and the rear wall 142. The two blade holders 112 are located between the front wall 141 and the rear wall 142 in the front-rear direction 8. The two blade holders 112 can rotate about a shaft 118 rotatably supported by the front wall 141 and the rear wall 142 as a rotation axis.

As shown in FIGS. 8 to 13, slits 145 and 146 are formed in the front wall 141 and the rear wall 142, respectively. The slits 145 and 146 extend in the circumferential direction of the shaft 118. The slits 145 and 146 extend from the lower side of the shaft 118 in the direction in which the side wall 143 exists, and reach the diagonally upper side of the shaft 118.

The input shaft 144 is inserted through the slits 145 and 146. The input shaft 144 moves in the slits 145 and 146 when the blade 111 changes its posture between the first posture and the second posture. That is, the slits 145 and 146 extend along the movement trajectory of the input shaft 144.

In front of the front wall 141, the front end of the shaft 118 and the front end of the input shaft 144 are connected by a connecting member 147. Behind the rear wall 142, the rear end of the shaft 118 and the rear end of the input shaft 144 are connected by a connecting member 148.

The tray 137 is located between the front wall 141 and the rear wall 142 in the front-rear direction 8. Further, the tray 137 is located below the blade holder 112. The tray 137 stores the ink that has been dropped or dropped from the blade 111 or the like.

The gear train 134 is located on the front surface side of the front wall 141 (the side opposite to the side where the blade holder 112 is present). The front wall 141 supports the gear train 134. The gear train 135 is located on the rear surface side of the rear wall 142 (the side opposite to the side where the blade holder 112 is present). The rear wall 142 supports the gear train 135. The gear trains 134 and 135 respectively transmit the rotation of the motor 104 to the input shaft 144.

As shown in FIGS. 8, 9 and 12, the gear train 134 includes three gears 151, 152, 153 meshed in series and a bevel gear 164. The gear 151 is located below the shaft 118 and the input shaft 144. The axis of the gear 151 is parallel to the axis of the shaft 118 and the axis of the input shaft 144. The connecting rod 154 connects a portion of the gear 151, which is separated from the axis of the gear 151 in the radial direction, with the front end of the input shaft 144. The connecting rod 154 transmits the rotation of the gear 151 as a reciprocating motion of the input shaft 144 around the shaft 118.

The gear 152 is located below the gear 151 and meshes with the gear 151. The axis of the gear 152 is parallel to the axis of the shaft 118 and the axis of the input shaft 144.

The gear 153 is located below the gear 152 and meshes with the gear 152. The axis of the gear 153 is parallel to the axis of the shaft 118 and the axis of the input shaft 144. As shown by the broken line in FIG. 12, the gear 153 has a lock wall 157 that projects rearward from the gear 153 along the circumferential direction of the gear 153, that is, toward the front wall 141. The lock wall 157 exists only in a part of the gear 152 in the circumferential direction, and does not exist along the entire circumference. By engaging the stopper 158 with the lock wall 157, rotation of the gear 153 in one direction (clockwise rotation in FIG. 12) is restricted. The stopper 158 engages with the lock wall 157 when the blade 111 is in the second posture.

As shown in FIG. 9, the stopper 158 is supported by the front wall 141. The stopper 158 rotates about an axis 159 parallel to the axis of the gear 153. The tension spring 160 is located between the lower end of the stopper 158 and the front wall 141. The pulling spring 160 biases the stopper 158 counterclockwise in FIG. As shown in FIG. 9, a front wall 141 is provided with a contact wall 149. The contact wall 149 contacts the lower end side of the stopper 158 and restricts the counterclockwise rotation of the stopper 158. The stopper 158 can rotate in the clockwise direction in FIG. 12 against the biasing force of the pulling spring 160 from the state of being in contact with the contact wall 149.

As shown by the broken line in FIG. 12, a hook-shaped locking portion 161 is formed at the upper end of the stopper 158. The locking portion 161 has a lock surface 162 and a sliding surface 163. The lock surface 162 abuts the one end surface 157</b>A of the lock wall 157 in the circumferential direction at substantially right angles. When the lock surface 162 comes into contact with the circumferential one end surface 157A of the lock wall 157, rotation of the gear 153 in one direction is restricted. The sliding surface 163 comes into contact with the other end surface 157B of the lock wall 157 in the circumferential direction without being orthogonal to each other. When the gear 153 rotates in the other direction (counterclockwise in FIG. 12) from the state where the sliding surface 163 contacts the other end surface 157B of the lock wall 157, the other end surface 157B of the lock wall 157 slides on the sliding surface 163. As a result, the stopper 158 rotates in the clockwise direction in FIG. 12 against the biasing force of the pulling spring 160.

As shown in FIGS. 8 and 9, the bevel gear 164 is located below the gear 153 and meshes with the gear 153. The axis of the bevel gear 164 is parallel to the axis of the shaft 118 and the axis of the input shaft 144.

As shown in FIGS. 10, 11 and 13, the gear train 135 has three gears 171, 172, 173 meshing in series. The gear 171 is located below the shaft 118 and the input shaft 144. The axis of the gear 171 is parallel to the axis of the shaft 118 and the axis of the input shaft 144. The connecting rod 174 connects a portion of the gear 171 that is distant from the axis line in the radial direction and a rear end of the input shaft 144. The connecting rod 174 transmits the rotation of the gear 171 as a reciprocating motion of the input shaft 144 around the shaft 118.

The gear 172 is located below the gear 171, and meshes with the gear 171. The axis of the gear 172 is parallel to the axis of the shaft 118 and the axis of the input shaft 144. The gear 172 has a detected wall 175 that projects forward from the gear 172 along the circumferential direction of the gear 172, that is, in a direction away from the front wall 141. The detected wall 175 exists only in a part of the gear 172 in the circumferential direction, and does not exist along the entire circumference. The rotational position of the gear 172 is determined by the detected portion 175 being detected by the optical sensor 176.

The gear 173 is located below the gear 172 and meshes with the gear 172. The axis of the gear 173 is parallel to the axis of the shaft 118 and the axis of the input shaft 144. As shown by a broken line in FIG. 13, the gear 173 has a lock wall 177 protruding forward from the gear 173, that is, toward the rear wall 142 along the circumferential direction of the gear 173. The lock wall 177 exists only in a part of the gear 172 in the circumferential direction, and does not exist along the entire circumference. By engaging the stopper 178 with the lock wall 177, rotation of the gear 173 in one direction (counterclockwise rotation in FIG. 13) is restricted. When the blade 111 is in the second position, the stopper 178 engages with the lock wall 177.

As shown in FIGS. 11 and 13, the stopper 178 is supported by the rear wall 142. The stopper 178 rotates about an axis 179 parallel to the axis of the gear 173. The extension spring 180 is located between the lower end of the stopper 178 and the rear wall 142. The pulling spring 180 biases the stopper 178 clockwise in FIG. A backing wall 150 is formed on the rear wall 142. The contact wall 150 contacts the lower end side of the stopper 178 and restricts the counterclockwise rotation of the stopper 178. The stopper 178 can rotate counterclockwise in FIG. 13 against the biasing force of the pulling spring 180 from the state of being in contact with the contact wall 150.

As shown by a broken line in FIG. 13, a hook-shaped locking portion 181 is formed at the upper end of the stopper 178. The locking portion 181 has a lock surface 182 and a sliding surface 183. The lock surface 182 abuts the one end surface 177A of the lock wall 177 in the circumferential direction almost orthogonally. The lock surface 182 comes into contact with the one end surface 177A of the lock wall 177 in the circumferential direction, whereby rotation of the gear 173 in one direction is restricted. The sliding surface 183 contacts the other end surface 177B of the lock wall 177 in the circumferential direction without being orthogonal to the other surface 177B. When the sliding surface 183 contacts the other end surface 177B of the lock wall 177 and the gear 173 rotates in the other direction (clockwise in FIG. 13), the other end surface 177B of the lock wall 177 slides on the sliding surface 183. Then, the stopper 178 rotates counterclockwise in FIG. 13 against the biasing force of the pulling spring 180.

As shown in FIGS. 8 and 10, the gear 153 and the gear 173 are supported by the shaft 184. The shaft 184 is rotatably supported by the front wall 141 and the rear wall 142 via bearings 185 and 186 provided on the front wall 141 and the rear wall 142, respectively. The shaft 184 is located below the blade holder 112 between the front wall 141 and the rear wall 142 in the front-rear direction 8. The shaft 184 is located above the tray 137.

As shown in FIGS. 8 and 10, the third frame 133 supports the motor 104 and the gear train 136. The motor 104 has an output shaft 138. A gear 139 is fixed to the output shaft 138. When the motor 104 is driven, the gear 139 rotates together with the output shaft 138. The output shaft 138 extends along the left-right direction 9.

The gear train 136 includes a reduction gear 191, a gear 192, a sun gear 193, a planet gear 194, and a bevel gear 196. The reduction gear 191, the gear 192, the sun gear 193, and the bevel gear 196 are rotatably supported by the third frame 133. The axes of the reduction gear 191, the gear 192, the sun gear 193, the planetary gear 194, and the bevel gear 196 are all aligned in the left-right direction 9.

The reduction gear 191 meshes with the gear 139 and the gear 192. The reduction gear 191 transmits the rotation of the gear 139 to the gear 192 at a predetermined reduction ratio. The sun gear 193 meshes with the gear 192. The planet gear 194 is rotatably supported by a support arm 195 rotatably connected to the shaft of the sun gear 193, and meshes with the sun gear 193. Depending on the rotation direction of the sun gear 193, the planet gear 194 moves to a position that meshes with the bevel gear 196 and a position that does not mesh with the bevel gear 196.

The bevel gear 196 meshes with the bevel gear 164. Rotation is transmitted from the gear train 136 to the gear train 134 by the engagement between the bevel gear 196 and the bevel gear 164. The rotation of the gear 153 meshing with the bevel gear 164 is transmitted to the gear 173 through the shaft 184. As a result, the gear train 134 and the gear train 135 rotate in synchronization.

As shown in FIGS. 14 and 15, the second frame 132 supports the cleaner 102 and the gear train 140. The cleaner 102 wipes off the ink attached to the blade 111. As shown in FIGS. 2 and 3, the cleaner 102 is located between the cap 73 and the blade 111 in the left-right direction 9.

As shown in FIGS. 14 and 15, the cleaner 102 has a foam 201, a plate 202, and a cleaner holder 203. The foam 102 is a member that can be impregnated with a cleaning liquid and can be held, and is, for example, a resin having fine pores formed by foaming. The plate 202 supports the foam 201. The foam 201 has a flat plate shape, and the maximum surface exposed on the side opposite to the plate 202 is the cleaning surface 201A. The cleaning surface 201A extends in the up-down direction 7 and the front-rear direction 8. That is, the cleaning surface 201A intersects the nozzle surface 243 of the print head 24.

As shown in FIG. 15, the gear train 140 includes a reduction gear 211 and three gears 212, 213, 214 that mesh in series. The axis lines of the reduction gear 211 and the three gears 212, 213, 214 meshing in series are all along the left-right direction 9. The reduction gear 211 meshes with the planet gear 194 in the second position. Further, the reduction gear 211 meshes with the gear 212. The reduction gear 211 transmits the rotation of the planet gear 194 to the gear 212 at a predetermined reduction ratio. The rotation is transmitted to the gear 213 through the gears 212 and 213.

The connecting rod 215 connects a portion of the gear holder 213, which is separated from the axis of the gear 213 in the radial direction, with the lower end portion of the cleaner holder 203. The connecting rod 215 transmits the rotation of the gear 213 as a reciprocating motion of the cleaner holder 203 in the up-down direction 7. The gear 213 and the connecting rod 215 form a crank.

The cleaner holder 203 supports the plate 202 with the cleaning surface 201A of the foam 201 facing rightward, that is, in the direction opposite to the second frame 132. The second frame 132 supports the guide members 204 located on both sides of the cleaner holder 203 in the front-rear direction 8. The guide member 204 is a member that extends in the up-down direction 7, and fits at both ends of the cleaner holder 203 in the front-rear direction 8 to support the cleaner holder 203 slidably in the up-down direction 7. By sliding the cleaner holder 203, the foam 201 moves the foam 201 to a third position below the blade 111 in the second attitude (solid line position in FIG. 17) and a fourth position above the blade 111 in the second attitude (in FIG. 17). (Dashed line position) and. When the foam 201 is in the third position, the cleaner 102 is located below the nozzle surface 243 of the print head 24. In other words, the cleaner 102 does not overlap the print head 24 in the up-down direction 7 when the foam 201 is in the third position.

The cleaner holder 203 has a flange 205. The collar portion 205 projects rightward from the foam 201 from below the plate 202. The protruding end of the collar portion 205 hangs downward. The collar portion 205 is located above the shaft 184 (see FIG. 8) and the tray 137. The collar portion 205 covers most of the shaft 184 between the front wall 141 and the rear wall 142 of the first frame 131. The protruding end of the collar portion 205 is located to the right of the shaft 184 and above the tray 137.

[Wiping operation]
Hereinafter, the wiping operation (an example of the first sliding operation) will be described with reference to FIG. 16.
Before the wiping operation, for example, when image recording is executed, the blade 111 is in the second posture. The blade 111 in the second posture does not come into contact with the nozzle surface 243 of the print head 24 that moves in the left-right direction 9. Also, the foam 201 of the cleaner 102 is in the third position. The form 201 in the third position does not come into contact with the print head 24 moving in the left-right direction 9.

When the motor 104 is driven in the wiping operation, the rotation of the motor 104 (normal rotation in this embodiment) is transmitted to the gear trains 134 and 135 via the gear train 136. The planetary gear 194 meshes with the bevel gear 196 when the motor 104 rotates forward.

The forward rotation of the motor 104 causes the gear trains 134 and 135 to rotate the blade 111 around the shaft 118 through the input shaft 144. By detecting the detection target wall 155 by the optical sensor 156, it is determined whether the gear 152 has reached the rotation position where the blade 111 is in the first posture or the rotation position where the blade 111 is in the second posture. It

As shown in FIG. 16, when the gear 152 reaches the rotation position where the blade 111 is in the first posture, the rotation of the motor 104 is stopped. The motor 104 whose rotation has been stopped is maintained in an excited state. Since the motor 104 is excited and the planetary gear 194 meshes with the bevel gear 196, even if the nozzle surface 243 contacts the blade 111, the blade 111 is held in the first posture.

When the carriage 241 located above the cap 73 is moved rightward in the left-right direction 9 while the blade 111 is held in the first posture, the nozzle surface 243 of the print head 24 contacts the tip of the blade 111. While moving. That is, the nozzle surface 243 and the blade 111 relatively move while making contact with each other. As a result, the ink attached to the nozzle surface 243 is wiped off by the blade 111. Further, since the foam 201 is in the third position, the cleaner 102 does not contact the nozzle surface 243.

[Cleaning operation]
Hereinafter, the cleaning operation (an example of the second slide operation) will be described with reference to FIG.
Before the cleaning operation is started, the foam 201 of the cleaner 102 is in the third position (standby position). Further, the carriage 241 is located above the cap 73 or above the platen 25, not above the blade 111 or the cleaner 102. In the cleaning operation, similarly to the wiping operation, when the motor 104 is normally rotated, the blade 111 is rotated around the shaft 118. As shown in FIG. 17, when the gear 152 reaches the rotation position where the blade 111 is in the second posture, the rotation of the motor 104 is stopped. The foam 201 in the third position is located below the blade 111 in the second posture.

When the blade 111 is in the second posture, the shaft 118 is located above the lowermost position of the lower portion 113L of the partition wall 113 of the blade holder 112. The tip portion (the left end portion in FIG. 17) of the blade 111 in the second posture is closer to the cleaning surface 201A of the foam 201 in the left-right direction 9 than the tip portion (the upper end portion in FIG. 16) of the blade 111 in the first posture.

After the blade 111 is placed in the second posture, the motor 104 is rotated in the reverse direction. The reverse rotation of the motor 104 causes the planet gear 194 to move away from the bevel gear 196 and mesh with the reduction gear 211 of the gear train 140. As a result, the reverse rotation of the motor 104 is transmitted to the cleaner holder 203 through the gear train 140. The cleaner holder 203 to which the rotation of the motor 104 is transmitted moves from the third position to the fourth position. When the cleaner holder 203 is located at the fourth position, the foam 201 is in the position shown by the broken line in FIG.

When the cleaner holder 203 moves from the third position to the fourth position, the cleaning surface 201A of the foam 201 contacts the tip of the blade 111, and the foam 201 moves upward. That is, the blade 111 relatively moves while contacting the cleaning surface 201A. As a result, the ink adhering to the blade 111, especially the ink adhering to the lower surface of the blade 111 in the second posture, is wiped off by the foam 201.

When the foam 201 moves upward while coming into contact with the blade 111, a force for moving the blade 111 from the second posture to the first posture is applied. That is, in FIG. 17, a force that rotates the blade holder 112 clockwise is applied to the blade holder 112.

When the blade 111 is in the second posture, the stopper 158 restricts the gear 153 from rotating clockwise in FIG. The stopper 178 restricts the gear 173 from rotating counterclockwise in FIG. That is, the stoppers 158 and 178 restrict the rotation of the gears 153 and 178 due to the blade holder 112 moving from the second posture to the first posture. As a result, even if the foam 201 moves upward while coming into contact with the blade 111, the blade 111 in the second posture does not move to the first posture.

In the cleaning operation, the cleaner 102 moves in the vertical direction 7, and in the wiping operation, the carriage 241 moves in the horizontal direction 9. That is, the direction in which the cleaner 102 moves in the cleaning operation intersects the direction in which the carriage 241 moves in the wiping operation. Further, when the foam 201 moves from the third position to the fourth position, the cleaner 102 passes the position of the nozzle surface 243 in the up-down direction 7.

The cleaning surface 201A of the foam 201 in the fourth position is located above the blade 111 in the second posture. When the form 201 is in the fourth position, the motor 104 is normally rotated until the blade 111 in the second position is in the first position. After the blade 111 is in the first position, the motor 104 is rotated in the reverse direction until the foam 201 in the fourth position is in the third position. Then, when the foam 201 reaches the third position, the motor 104 is normally rotated until the blade 111 in the first attitude is in the second attitude. As a result, the cleaning operation ends.

[Operation and effect of the embodiment]
According to the above-described embodiment, since the partition wall 113 is located between the shaft 118 and the blade 111, the ink attached to the blade 111 is suppressed from moving to the shaft 118. Further, when the blade 111 is in the first posture, the lower end of the lower portion 113L of the partition wall 113 is located below the lower end of the side wall 114, so that ink that runs down along the partition wall 113 does not easily flow to the side wall 114. As a result, ink is suppressed from flowing from the partition wall 113 to the shaft 118.

Further, when the blade 111 is in the second posture, the shaft 118 is located above the lowermost position of the lower portion 113L of the partition wall 113. Therefore, when the blade 111 is in the second posture, the lower portion 113L of the partition wall 113 is located. It is difficult for ink to flow from the shaft 118 to the shaft 118.

Further, since the lower portion 113U of the partition wall 113 has the rib 123, the ink flows and gathers at the lowermost position of the lower portion 113U and drops, so that the position where the ink falls from the lower portion 113U is stable.

[Modification]
In the embodiment described above, the two blades 111 are arranged in the front-rear direction 8, but the number of blades 111 is not limited to this. For example, three or more blades 111 may be arranged in the front-rear direction 8. Further, if the nozzle surface of the print head 24 is relatively narrow and the blade 111 is relatively small, the number of blades 111 may be one.

Further, in the above-described embodiment, the power of the motor 104 is transmitted to the blade holder 112 via the gear trains 134 and 135, but the first drive transmission mechanism and the second drive transmission mechanism are not limited to the gear train. .. For example, the first drive transmission mechanism and the second drive transmission mechanism may be realized by a belt transmission mechanism including a pair of pulleys and an endless belt wound around the pulleys.

Further, in the above-described embodiment, one input shaft 144 is inserted through the two blade holders 112, but the two blade holders 112 are connected to each other, and each blade holder 112 receives two input shafts. The axes may be coaxially connected.

In the above-described embodiment, the carriage 241 moves to realize the relative movement between the blade 111 in the first posture and the print head 24, but the present invention is not limited to this. The blade 111 may be moved with respect to the print head 24 without moving the print head 24.

Further, in the above-described embodiment, the so-called line head type head in which the print head 24 does not move when the printing apparatus 10 prints on the roll paper 11 is adopted, but the present invention is not limited to this. For example, when the printing apparatus 10 prints on the roll paper 11, the print head 24 moves in the left-right direction 9 to eject ink from the stopped roll paper 11, and then the roll paper 11 is fed. A so-called serial head type head that is repeatedly conveyed to the head may be used.

Further, in the above-described embodiment, the cleaner 102 is moved to realize the relative movement between the blade 111 in the second posture and the cleaner 102, but the present invention is not limited to this. The blade 111 may be moved with respect to the cleaner 102 without moving the cleaner 102.

Further, in the above-described embodiment, the cleaner 102 has the foam 201 capable of holding the liquid, but the cleaner 102 is not limited to having the foam 201. For example, instead of the foam 201, the cleaner 102 may have a hard resin having an uneven surface, or a plurality of wires extending in the front-rear direction 8 arranged in the up-down direction 7.

Further, in the above-described embodiment, the blade 111 changes its posture between the first posture and the second posture by rotating around the shaft 118, but the posture of the blade 111 changes by an operation other than rotation. May be done. Further, the locus of the tip of the blade 111 in changing the posture is not limited to a circular arc. For example, the locus of the tip of the blade 111 in the attitude change may include the component in the vertical direction 7. That is, the attitude of the blade 111 may be changed so as to rotate after being linearly moved along the vertical direction 7.

Further, the tank 70 is not limited to the one that stores the ink of one black color, and may store, for example, the four color inks of black, yellow, cyan, and magenta, respectively.

Moreover, the ink is not limited to a liquid containing a pigment, resin fine particles, or the like. Therefore, if the ink does not contain the resin fine particles, the printing apparatus 10 may not have the heater 26. The liquid ejected from the nozzles 30 of the print head 24 is not limited to ink. For example, a treatment liquid for aggregating or precipitating components in the ink, or an arbitrary liquid such as a liquid in which metal particles are dispersed in a solvent may be ejected from the nozzle 30 of the print head 24.

Further, the discharge port 13 does not necessarily have to be formed in the front wall 31 of the housing 14. For example, the discharge port 13 may be formed in the rear wall 33 of the housing 14, and the printed roll paper 11 passing through the discharge port 13 may be discharged obliquely upward or upward.

The printing device 10 described above can print on the roll paper 11, but the printing device 10 is not limited to this. For example, the printing device 10 may be a device that prints on the roll paper 11 and the cut paper. However, a device that prints only on cut paper may be used.

The printing device 10 is not limited to printing on paper. For example, the printing device 10 may print on a T-shirt, a sheet for outdoor advertisement, or the like. Further, the printing device 10 may be one that ejects a liquid other than ink, such as a material for a wiring pattern, onto a wiring board to perform recording. Further, the printing device 10 may be one that ejects ink onto a case of a mobile terminal such as a smartphone, cardboard, resin, or the like for recording.

Further, the above-described printing apparatus 10 is used with the front wall 31 and the rear wall 32 of the housing 14 along the up-down direction 7 and the left-right direction 9, but the use posture of the printing apparatus 10 is not limited to this. ..

10... Printing device (liquid ejection device)
24... Print head 30... Nozzle (nozzle hole)
100...Maintenance unit (wiping device)
101... Wiper 102... Cleaner 103... Rotation mechanism 111... Blade 112... Blade holder 113... Partition wall 113U... Upper part (third wall)
113M... central part (first wall)
113L...lower part (2nd wall)
114... Side wall (through wall)
118... Shaft 123... Rib (portion extending in the left-right direction 9)
144... Input shaft (second shaft)
145, 146... Slit 201A... Cleaning surface 243... Nozzle surface

Claims (11)

A head having a nozzle surface on which nozzles capable of ejecting liquid are formed;
A wiper having a blade and a blade holder supporting the blade,
Frame and
A shaft that is supported by the frame and that penetrates the blade holder,
A rotating mechanism for rotating the blade and the blade holder around the shaft in a first posture in which the blade can contact the nozzle surface of the head and in a second posture different from the first posture; Equipped
The shaft is located below the blade in the first posture,
The blade holder has a through wall through which the shaft penetrates, and at least a partition wall located between the shaft and the blade, and
In the first posture, the lower end of the partition wall is located below the lower end of the penetrating wall. In the first posture, the partition wall extends in a first direction that is parallel to the shaft and intersects the up-down direction, and is positioned below the blade, and the partition wall extends downward from the first wall. The liquid ejecting apparatus according to claim 1, further comprising a second wall extending downward from a lower end of the penetrating wall. The liquid ejection device according to claim 2, wherein the shaft is located above a lowermost position of the second wall in the second posture. The liquid ejecting apparatus according to claim 2, wherein a lower end edge of the second wall in the first posture has a portion extending along a direction intersecting an axial direction of the shaft. The liquid ejection device according to claim 2, wherein the penetrating wall of the blade holder has portions extending downward from both ends of the first wall in the axial direction of the shaft. Further comprising a second shaft passing through the through wall of the blade holder,
The frame has a slit through which the second shaft is inserted and which extends along a movement locus of the second shaft due to rotation of the blade,
The said penetration wall of the said blade holder covers the part located in the said blade side with respect to the said partition wall among the said slits from the said 1st attitude|position to the said 2nd attitude|position. Liquid ejector. The partition wall has a third wall extending upward from the first wall in the first posture,
The third wall is located at one end of the first wall in an orthogonal direction orthogonal to the vertical direction and the axial direction,
The blade is located farther from the one end of the first wall than the third wall in the orthogonal direction, and is on the other end side of the first wall of the third wall in the orthogonal direction. The liquid ejecting apparatus according to claim 2, which extends along the surface. Further comprising a cleaner having a cleaning surface intersecting the nozzle surface,
The blade and the head in the first posture are capable of performing a first sliding operation in which the blade relatively moves while being in contact with the nozzle surface,
8. The liquid discharge according to claim 1, wherein the blade in the second posture and the cleaner are capable of performing a second sliding operation in which the blade relatively moves while being in contact with the cleaning surface. apparatus. The liquid ejection device according to claim 1, wherein a plurality of the blades are arranged along the axial direction of the shaft. The liquid ejection device according to claim 1, wherein the blade holder is a resin molded product. A wiping device attachable to a liquid ejection device comprising a head having a nozzle surface having nozzle holes capable of ejecting liquid,
A wiper having a blade and a blade holder supporting the blade,
Frame and
A shaft that is supported by the frame and that penetrates the blade holder,
A rotating mechanism for rotating the blade and the blade holder around the shaft in a first posture in which the blade can contact the nozzle surface of the head and in a second posture different from the first posture; Equipped
The shaft is located below the blade in the first posture,
The blade holder has a through wall through which the shaft penetrates, and at least a partition wall located between the shaft and the blade, and
In the first posture, the lower end of the partition wall is located below the lower end of the penetrating wall.

Images