JP7095336B2 - Wiping device, head maintenance device, liquid discharge device - Google Patents

Description

The present invention relates to a wiping device , a head maintenance device, and a device for discharging a liquid.

For example, when a liquid discharge head that discharges liquid is used, a maintenance / recovery mechanism (maintenance device) including a cap for capping the nozzle surface, a wiping device for wiping and cleaning the nozzle surface, etc. is provided in order to maintain and recover the state of the nozzle. ..

Conventionally, there is known a method in which a web is used as a wiping member for wiping the nozzle surface and wiping is performed on the outward route and the return route (Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-154361

By the way, if the object to be wiped is solidified such as liquid adhering to the object to be wiped and firmly adheres to the object to be wiped, it is difficult to reliably remove the object to be wiped by wiping by reciprocating movement of the wiping member. There is.

The present invention has been made in view of the above problems, and an object thereof is to improve the wiping property.

In order to solve the above problems, the wiping device according to the present invention is
A roll on the feeding side, in which the wiping member is wound into a roll,
An axial member of the take-up side roll that winds up the wiping member unwound from the take-out side roll, and
A pressing member for pressing the wiping member against the wiping target is provided between the feeding side roll and the winding side roll.
The pressing member has an uneven surface and has an uneven surface.
The convex parts are arranged so that the concave parts do not line up in the wiping direction .
The wiping member contains a liquid and
The first wiping operation of transferring the liquid contained in the wiping member to the wiping target is performed.
In the first wiping operation, the stamping operation is repeated in which the pressing member is moved back and forth with respect to the wiping target, and the wiping member is pressed against the wiping target and then separated.
When performing the stamp operation, the convex portion of the pressing member presses the wiping member against the wiping object, and the concave portion does not press the wiping member against the wiping object.
It was configured.

According to the present invention, the wiping property can be improved.

It is a side side explanatory view of the wiping unit which concerns on 1st Embodiment of this invention. It is also a plan explanatory view. Similarly, it is an enlarged explanatory view of the main part of the pressing member. It is a side side explanatory view of the wiping device which concerns on this invention. It is explanatory drawing of the main part provided with the explanation of the 1st example of the 1st wiping operation. It is explanatory drawing of the main part provided with the explanation of the 2nd example of the 1st wiping operation. It is explanatory drawing of the main part provided with the explanation of the 1st example of the 2nd wiping operation. It is explanatory drawing which provides the explanation of the example in which the 1st wiping operation and the 2nd wiping operation are performed continuously. It is explanatory drawing which provides the explanation of the example in which the first wiping operation and the wiping operation by a wiper member are continuously performed. It is a plane explanatory view provided for the explanation of the positional relationship between the unevenness of the pressing member and the object to be wiped in the 2nd Embodiment of this invention. Similarly, it is a side view of the head. It is a perspective explanatory drawing which provides the explanation of the 1st example to the 4th example of a pressing member. It is explanatory drawing which provides the 5th example of a pressing member. It is explanatory drawing which provides the explanation of the 6th example of a pressing member. It is explanatory drawing which provides the explanation of the 7th example of a pressing member. It is explanatory drawing which provides the 8th example of a pressing member. It is explanatory drawing which provides the explanation of the 9th example of a pressing member. It is a front explanatory view of the apparatus which discharges a liquid including the head maintenance apparatus which concerns on this invention. It is a plane explanatory view provided for the explanation of the head arrangement in the carriage of this apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a side view of the wiping unit according to the same embodiment, FIG. 2 is a plan view, and FIG. 3 is an enlarged explanatory view of a main part of the pressing member.

The wiping unit 100 has a wiping area 102 for wiping the object to be wiped and an empty discharge area 103 for performing empty discharge in the housing 101.

Then, in the housing 101, the feeding side roll 2A in which the web 2 as the wiping member is wound around the feeding roller 3 which is the axial center member in a roll shape, and the winding side for winding the web 2 unwound from the feeding side roll 2A. It is provided with a take-up roller 4 which is a shaft core member of the roll 2B.

In the initial state, the web 2 is not wound on the take-up roller 4, but for the sake of clarity, FIG. 1 shows a state in which the take-up side roll 2B is formed.

The web 2 is preferably made of a sheet-like material that has absorbency, at least liquid resistance to the liquid used, and does not cause fluffing or dust generation, and is, for example, a non-woven fabric, cloth, film, or the like. Examples include paper. Further, in the present embodiment, the web 2 is impregnated with a liquid such as a cleaning liquid that softens the waste liquid of the ink to be wiped and removed.

The web 2 is fed from a pay-out side roll 2A arranged in the wiping area 102, passes through a guide roller 5, and passes through a pressing member 11 made of a roller member that pushes the web 2 against the wiping target, and then guide rollers 6, 7, and 8. Crawls to the empty discharge area 103.

Then, the web 2 is crawled along the opening surface of the housing 101 by the guide rollers 9 and 10 in the empty discharge region 103, and is wound around the take-up roller 4 as the take-up side roll 2B.

Here, the pressing member 11 that presses the web 2 unwound from the payout side roll 2A against the wiping target is rotatably arranged, and the web 12 is pressed against the wiping target by the spring 12 with a predetermined pressing force.

As shown in FIG. 3, the pressing member 11 has concave portions 11a and convex portions 11b alternately formed at least along the peripheral surface, and the peripheral surface has an uneven shape.

Further, in the wiping unit 100, a wiper member 15 for wiping the wiping target is arranged between the wiping area 102 and the empty discharge area 103 separately from the web 2.

Next, the wiping device according to the present invention will be described with reference to FIG. FIG. 4 is a side explanatory view of a wiping device including a wiping unit.

The wiping device 1 constitutes a head maintenance device for wiping the nozzle surface 20a of the liquid discharging head (hereinafter, also referred to as “head”) 20 of the device for discharging liquid.

Then, the wiping unit 100 is made into a cartridge, and the wiping unit 100 is detachably mounted on the moving member 30.

The moving member 30 includes a transmission mechanism 37 that meshes with the gear 39 provided on the take-up roller 6 when the wiping unit 100 is mounted, and a take-up motor 38 that rotates the take-up roller 6 via the transmission mechanism 37. There is.

Further, the moving member 30 is provided with an encoder sensor 17 made of a transmissive photo sensor that detects a pattern formed on the code wheel 16 of the wiping unit 100. The encoder 18 for detecting the moving distance (feed amount) of the web 2 is configured by these chord wheels 16 and the encoder sensor 17.

The moving member 30 is arranged so as to be reciprocally movable in the arrow Y direction, which is the nozzle arrangement direction of the head 20. The movement of the moving member 30 in the wiping direction Y (Y1, Y2) is performed by a moving mechanism including a rack 31, a pinion 32, and a moving member moving motor 33 for rotating the pinion 32.

Further, the moving member 30 is arranged so as to be movable (up and down) in the direction in which the web 2 advances and retreats with respect to the nozzle surface 20a, in this case, in the vertical direction. The elevating and lowering of the moving member 30 is performed by, for example, an elevating mechanism including a cam 35 and a moving member elevating motor 36 for rotating the cam 35.

Next, the wiping operation by the wiping device 1 will be described.

When the nozzle surface 20a of the head 20 is wiped by the wiping device 1, the moving member 30 rises and the web 2 is pressed against the nozzle surface 20a of the head 20 by the pressing member 11 with a predetermined pressing force.

At this time, the web 2 is wound on the winding side roll 2A by rotating the winding roller 4. By controlling the moving speed (feeding speed) of the web 2 due to the rotation of the winding side roll 2A, it is possible to control the relative speed of the web 2 pressed against the nozzle surface 20a with respect to the nozzle surface 20a.

Further, the rotational speed of the pressing member 11 can be controlled by a driving means for rotationally driving the pressing member 11.

Therefore, a first example of the first wiping operation will be described with reference to FIG. FIG. 5 is an explanatory diagram of a main part used for explaining the first example of the first wiping operation.

In the first example of the first wiping operation, when the web 2 is moved relative to the nozzle surface 20a to be wiped in the wiping direction Y1 and wiped, as shown in FIG. 5A, the pressing member 11 The web 2 wipes the peripheral surface of the pressing member 11 while moving in the arrow A direction so that the relative speed of the web 2 with respect to the nozzle surface 20a becomes almost zero in synchronization with the movement (rotation in the arrow direction B). ..

In this case, the rotation speed of the pressing member 11 and the feed speed of the web 2 are controlled according to the wiping speed (moving speed in the wiping direction Y1) when wiping the nozzle surface 20a.

As a result, as shown in FIG. 5B, the cleaning liquid 41, which is the liquid impregnated in the web 2 by the pressing member 11, can be transferred to the nozzle surface 20a to which the waste liquid 40 is attached.

Next, a second example of the first wiping operation will be described with reference to FIG. FIG. 6 is an explanatory diagram of a main part used for explaining the second example of the first wiping operation.

In the second example of the first wiping operation, with the pressing member 11 stopped rotating and feeding the web 2, the wiping unit 100 is raised in the direction of arrow Z1 and the web 2 is pressed against the nozzle surface 20a by the pressing member 11. After that, the wiping unit 100 is lowered in the direction of arrow Z2, and the web 2 is separated from the nozzle surface 20a by the pressing member 11.

Then, after moving the wiping unit 100 in the wiping direction Y1 by a predetermined amount, the wiping unit 100 is raised to press the web 2 against the nozzle surface 20a, and the wiping unit 100 is lowered to separate the web 2 from the nozzle surface 20a.

By repeating such a stamping operation (arrows 1 to 11 are attached), the cleaning liquid 41 impregnated in the web 2 can be transferred to the entire nozzle surface 20a.

By performing these first wiping operations, the cleaning liquid 41 can be transferred to the nozzle surface 20a to facilitate removal of the waste liquid 40 adhering to the nozzle surface 20a.

Next, a first example of the second wiping operation will be described with reference to FIG. 7. FIG. 7 is an explanatory diagram of a main part used for explaining the second wiping operation.

In the second wiping operation, the web 2 is relatively moved in the wiping direction Y1 with respect to the nozzle surface to be wiped and wiped. At this time, the relative speed of the web 2 with respect to the nozzle surface 20a is wiped with a predetermined value.

For example, by controlling the feed rate of the web 2 supported by the pressing member 11 having an uneven peripheral surface, as shown in FIG. 7A, a nozzle to which the cleaning liquid 41 impregnated in the web 2 is transferred is transferred. The surface 20a can be wiped off, and as shown in FIG. 7B, the waste liquid 40 adhering to the nozzle surface 20a can be scraped off together with the cleaning liquid 41.

In this way, when the wiping operation by the web 2 (second wiping operation) is performed, the wiping target is scraped off through the web 2 by the edge of the convex portion 11b of the pressing member 11, so that the waste liquid 40 is surely removed. And the wiping property is improved.

Next, an example in which the first wiping operation and the second wiping operation are continuously performed will be described with reference to FIG. FIG. 8 is an explanatory diagram provided for the same explanation.

First, as shown in FIGS. 8A to 8C, the first wiping operation is performed while moving the wiping unit 100 in the wiping direction Y1 which is the first direction, and as described above, the cleaning liquid 41 of the web 2 is performed. Is transferred to the nozzle surface 20a to which the waste liquid 40 is attached.

In this first wiping operation, when the peripheral surface of the pressing member 11 has a flat shape instead of an uneven shape (comparative example), the cleaning liquid 41 impregnated in the web 2 is pressed without staying on the nozzle surface 20a. It is swept downstream as the member 11 moves.

On the other hand, as in the present embodiment, since the unevenness is provided along the peripheral surface of the pressing member 11, the cleaning liquid 41 in the web 2 pushed out by the convex portion 11b is formed in the concave portion 11a. Since the pressure is released, it can stay on the nozzle surface 20a without being swept in the moving direction.

After that, as shown in FIGS. 8 (d) to 8 (f), the second wiping operation is performed while moving the wiping unit 100 in the wiping direction Y2 which is the second direction opposite to the first direction, and the nozzle surface is performed. The waste liquid 40 of 20a is scraped off and removed.

By this second wiping operation, the waste liquid 40 of the nozzle surface 20a in which the cleaning liquid 41 impregnated in the web 2 and transferred to the nozzle surface 20a is mixed is scraped off by the edge of the convex portion 11b of the pressing member 11. At this time, since the scraping is performed a plurality of times by the number of the convex portions 11b crossing the nozzle surface 20a, the waste liquid 40 can be reliably removed.

Next, an example in which the first wiping operation and the wiping operation by the wiper member are continuously performed will be described with reference to FIG. 9. FIG. 9 is an explanatory diagram provided for the same explanation.

Here, as shown in FIGS. 9A and 9B, the wiping unit 100 is moved in the wiping direction Y2 and the first wiping operation is performed to transfer the cleaning liquid impregnated in the web 2 to the nozzle surface 20a.

Then, during the first wiping operation, the wiper member 15 starts contacting the nozzle surface 20a as shown in FIG. 9B, and the wiper member 15 starts contacting the nozzle surface 20a as shown in FIGS. 9C and 9D. The waste liquid 40 on the nozzle surface 20a is scraped off by the member 15.

As described above, by providing unevenness along the peripheral surface of the pressing member that presses the web against the wiping target, the liquid such as the cleaning liquid impregnated in the web can be transferred to the wiping target, and the scraping by wiping can be surely performed. Will be able to.

Next, the second embodiment of the present invention will be described with reference to FIGS. 10 and 11. FIG. 10 is a plan view for explaining the positional relationship between the unevenness of the pressing member and the object to be wiped in the same embodiment, and FIG. 11 is a side view of the head.

In the present embodiment, the object to be wiped is the nozzle surface 20a, a plurality of rows (or one row) of nozzle rows in which a plurality of nozzles 21 are arranged are arranged on the nozzle surface 20a, and the peripheral portion of the nozzle surface 20a is the cover member 22. It is covered with. In this case, as shown in FIG. 12, a step 24 is formed between the nozzle surface 20a and the surface of the cover member 22.

Therefore, in the present embodiment, the convex portion 11b of the pressing member is provided at a position where it does not hit each nozzle 21.

This makes it possible to prevent the convex portion 11b from hitting the nozzle 21 and wearing the edge of the nozzle 21 during wiping.

Further, in the present embodiment, the convex portion 11b of the pressing member includes the convex portion 11b1 that presses the web 2 at the position where the nozzle surface 20a and the surface of the cover member 22 are in contact with each other, that is, at the position of the step 24.

Here, the difference in height (step) between the concave portion 11a and the convex portion 11b of the pressing member 11 is a step (height) of 24 or more between the nozzle surface 20a and the cover member 22. Further, the distance between the convex portions 11b of the pressing member 11 (convex distance) is set to be 24 or more steps between the nozzle surface 20a and the cover member 22.

As a result, the waste liquid 40 accumulated in the portion of the step 24 between the nozzle surface 20a and the cover member 22 can be reliably removed.

Next, a different example of the pressing member will be described with reference to FIG. FIG. 12 is a perspective explanatory view for the same explanation.

The pressing member 11A of the first example shown in FIG. 12A is a rotating body (roller), and a plurality of hemispherical convex portions 11b are arranged side by side on the peripheral surface along the circumferential direction and the axial direction, and are convex. Concavities and convexities are formed by forming recesses 11a between the portions 11b.

The pressing member 11B of the second example shown in FIG. 12B is a flat plate-shaped member, and a plurality of hemispherical convex portions 11b are arranged side by side on the surface in a direction orthogonal to the wiping direction Y and the wiping direction Y. The concave portions 11a are formed between the convex portions 11b to form irregularities.

In the pressing member 11C of the third example shown in FIG. 12 (c), a plurality of semi-cylindrical members 11d are arranged side by side along the wiping direction Y on the base member 11c, and are peripheral to the peripheral surface of each semi-cylindrical member 11d. A plurality of hemispherical convex portions 11b are arranged side by side along the direction and the axial direction, and the concave portions 11a are formed between the convex portions 11b to form unevenness.

The pressing member 11D of the fourth example shown in FIG. 12D is a flat plate-shaped member, and a plurality of hemispherical convex portions 11b are arranged side by side on the surface in the wiping direction and in the direction orthogonal to the wiping direction, and are convex. Concavities and convexities are formed by forming recesses 11a between the portions 11b. The pressing member 11D has a length in the wiping direction Y substantially the same as the length of the head 20 to be wiped.

Next, a further different example of the pressing member will be described with reference to FIGS. 13 to 17. 13 to 17 are explanatory views provided for the same explanation, each figure (a) is a plan explanatory view, and FIG. 17 (b) is a side explanatory view.

In the pressing member 11E of the fifth example shown in FIG. 13, a plurality of columnar convex portions 11b are arranged side by side on the surface in a direction orthogonal to the wiping direction Y and the wiping direction Y, and the gaps between the convex portions 11b are defined as concave portions 11a. , Forming irregularities.

In the pressing member 11F of the sixth example shown in FIG. 14, a plurality of hemispherical convex portions 11b are arranged side by side in a direction orthogonal to the wiping direction Y and the wiping direction Y, and the gaps between the convex portions 11b are defined as concave portions 11a. , Forming irregularities.

In the pressing member 11G of the seventh example shown in FIG. 15, a plurality of rectangular convex portions 11b are arranged side by side in a direction orthogonal to the wiping direction Y and the wiping direction Y to form irregularities. In the pressing member 11G, the convex portions 10b are arranged in a staggered manner in the wiping direction Y so that the concave portions 11a are not arranged in the wiping direction Y.

In the pressing member 11H of the eighth example shown in FIG. 16, a plurality of rectangular convex portions 11b are arranged side by side in a direction orthogonal to the wiping direction Y and the wiping direction Y to form irregularities. In the pressing member 11H, the convex portions 10b are arranged at the same position in the direction orthogonal to the wiping direction Y, and the concave portions 11a are arranged in a row in the wiping direction Y.

In the pressing member 11I of the ninth example shown in FIG. 17, convex portions 11b on the line are arranged on the surface in a direction orthogonal to the wiping direction Y to form irregularities.

Although the pressing member is shown here in a flat plate shape, it may also have a roller shape (rotating body).

Next, the outline of the device for discharging the liquid including the head maintenance device according to the present invention will be described with reference to FIGS. 18 and 19. FIG. 18 is a front explanatory view of the device for discharging the liquid, and FIG. 19 is a plan explanatory view for explaining the head arrangement in the carriage of the device.

The device for discharging this liquid is a serial type device, in which one or a plurality of liquid discharge heads 20 (20A to 20C) are mounted on the carriage 121, and the medium 123 is intermittently transported by the transport means 122. Then, the carriage 121 is moved in the direction of the arrow, and the required liquid is discharged from the liquid discharge head 20 to form an image.

Further, on the home position side of the carriage 121, a cap 52 for capping the nozzle surface 20a of the liquid discharge head 20 and a head cleaning device 51 configured by the wiping device 1 as described in the above embodiment are included, and the head 20 is included. A head maintenance device 50 for performing maintenance (head maintenance) is arranged.

As described above, by providing the head maintenance device including the wiping device according to the present invention, the head surface can be cleaned and stable liquid discharge can be performed.

In the present application, the liquid to be discharged may have a viscosity and surface tension that can be discharged from the head, and is not particularly limited, but the viscosity becomes 30 mPa · s or less at room temperature, under normal pressure, or by heating or cooling. It is preferable that it is a thing. More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, polymerizable compounds, resins, functionalizing materials such as surfactants, biocompatible materials such as DNA, amino acids and proteins, and calcium. , Solvents, suspensions, emulsions, etc. containing edible materials such as natural pigments, such as inks for inkjets, surface treatment liquids, components of electronic and light emitting elements, and formation of electronic circuit resist patterns. It can be used in applications such as liquids and material liquids for three-dimensional modeling.

Piezoelectric actuators (laminated piezoelectric elements and thin-film piezoelectric elements), thermal actuators that use electric heat conversion elements such as heat-generating resistors, and electrostatic actuators that consist of a vibrating plate and counter electrodes are used as energy sources for discharging liquid. Includes what to do.

The "liquid discharge unit" is a liquid discharge head integrated with functional parts and a mechanism, and includes a collection of parts related to liquid discharge. For example, the "liquid discharge unit" includes a head tank, a carriage, a supply mechanism, a maintenance / recovery mechanism, a main scanning movement mechanism in which at least one of the configurations is combined with a liquid discharge head, and the like.

Here, the term "integration" means, for example, a liquid discharge head and a functional component, a mechanism in which the mechanism is fixed to each other by fastening, bonding, engagement, etc., or one in which one is movably held with respect to the other. include. Further, the liquid discharge head, the functional component, and the mechanism may be configured to be detachable from each other.

For example, as a liquid discharge unit, there is a unit in which a liquid discharge head and a head tank are integrated. In some cases, the liquid discharge head and the head tank are integrated by being connected to each other by a tube or the like. Here, a unit including a filter can be added between the head tank of these liquid discharge units and the liquid discharge head.

Further, as a liquid discharge unit, there is a unit in which a liquid discharge head and a carriage are integrated.

Further, there is a liquid discharge unit in which the liquid discharge head and the scanning movement mechanism are integrated by holding the liquid discharge head movably by a guide member constituting a part of the scanning movement mechanism. In some cases, the liquid discharge head, the carriage, and the main scanning movement mechanism are integrated.

Further, as a liquid discharge unit, there is a carriage to which a liquid discharge head is attached, in which a cap member which is a part of the maintenance / recovery mechanism is fixed, and the liquid discharge head, the carriage, and the maintenance / recovery mechanism are integrated. ..

Further, as a liquid discharge unit, there is a liquid discharge unit in which a tube is connected to a head tank or a liquid discharge head to which a flow path component is attached, and the liquid discharge head and a supply mechanism are integrated. The liquid of the liquid storage source is supplied to the liquid discharge head through this tube.

The main scanning movement mechanism shall include a single guide member. Further, the supply mechanism includes a single tube and a single loading unit.

The "device for discharging a liquid" includes a device provided with a liquid discharge head or a liquid discharge unit and driving the liquid discharge head to discharge the liquid. The device for discharging a liquid includes not only a device capable of discharging a liquid to a device to which the liquid can adhere, but also a device for discharging the liquid into the air or into the liquid.

The "device for discharging the liquid" may include means for feeding, transporting, and discharging paper to which the liquid can adhere, as well as a pretreatment device, a posttreatment device, and the like.

For example, as a "device for ejecting a liquid", an image forming device, which is a device for ejecting ink to form an image on paper, and a three-dimensional object (three-dimensional object) are formed in layers in order to form a three-dimensional object. There is a three-dimensional modeling device (three-dimensional modeling device) that discharges the modeling liquid into the powder layer.

Further, the "device for discharging a liquid" is not limited to a device in which a significant image such as characters and figures is visualized by the discharged liquid. For example, those that form patterns that have no meaning in themselves and those that form a three-dimensional image are also included.

The above-mentioned "thing to which a liquid can adhere" means a material to which a liquid can adhere at least temporarily, such as a material to which the liquid adheres and adheres, and a material to which the liquid adheres and permeates. Specific examples include media such as paper, recording paper, recording paper, film, cloth and other recording media, electronic substrates, electronic components such as piezoelectric elements, powder layers (powder layers), organ models, and inspection cells. Yes, and includes everything to which the liquid adheres, unless otherwise specified.

The material of the above-mentioned "material to which a liquid can adhere" may be paper, thread, fiber, cloth, leather, metal, plastic, glass, wood, ceramics or the like as long as the liquid can adhere even temporarily.

Further, the "device for discharging the liquid" includes, but is not limited to, a device in which the liquid discharge head and the device to which the liquid can adhere move relatively. Specific examples include a serial type device that moves the liquid discharge head, a line type device that does not move the liquid discharge head, and the like.

In addition, as a "device for ejecting a liquid", a treatment liquid coating device for ejecting a treatment liquid to the paper in order to apply the treatment liquid to the surface of the paper for the purpose of modifying the surface of the paper, etc. There is an injection granulator that granulates fine particles of a raw material by injecting a composition liquid in which a raw material is dispersed in a solution through a nozzle.

In addition, in the term of this application, image formation, recording, printing, printing, printing, modeling, etc. are all synonymous.

2 Web (wiping material)
2A Roll on the pay-out side 2B Roll on the take-up side 3 Roll-out roller (axis center member)
4 Winding roller (axis center member)
11, 11A to 11I Pushing member 20 Liquid discharge head 21 Carriage 50 Maintenance device 51 Head cleaning device

Claims (6)

A roll on the feeding side, in which the wiping member is wound into a roll,
An axial member of the take-up side roll that winds up the wiping member unwound from the take-out side roll, and
A pressing member for pressing the wiping member against the wiping target is provided between the feeding side roll and the winding side roll.
The pressing member has an uneven surface and has an uneven surface.
The convex parts are arranged so that the concave parts do not line up in the wiping direction .
The wiping member contains a liquid and
The first wiping operation of transferring the liquid contained in the wiping member to the wiping target is performed.
In the first wiping operation, the stamping operation is repeated in which the pressing member is moved back and forth with respect to the wiping target, and the wiping member is pressed against the wiping target and then separated.
When performing the stamp operation, the convex portion of the pressing member presses the wiping member against the wiping object, and the concave portion does not press the wiping member against the wiping object.
A wiping device characterized by that. The wiping device according to claim 1 , wherein after performing the first wiping operation, the wiping member performs a second wiping operation of wiping the object to be wiped. When the pressing member is moved in the first direction with respect to the wiping target, the first wiping operation is performed, and after moving in the first direction, the pressing member is moved in the second direction opposite to the first direction. The wiping device according to claim 2 , wherein the wiping operation is performed. A head maintenance device that maintains the liquid discharge head.
The head maintenance device according to any one of claims 1 to 3 , further comprising the wiping device for wiping the nozzle surface of the liquid discharge head. The head maintenance device according to claim 4 , wherein the unevenness of the pressing member has a step and a convex distance equal to or larger than the step on the nozzle surface. A liquid discharge head that discharges liquid and
The liquid according to any one of claims 1 to 3 or the head maintenance device according to claim 4 or 5 , wherein the liquid discharge head is provided with the wiping device for wiping the nozzle surface of the liquid discharge head. A device that discharges.

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