JP7037749B2 - Liquid transfer device and liquid discharge device - Google Patents

Description

The present invention relates to a liquid transport device and a device for discharging a liquid.

Conventionally, a liquid transfer device including a transfer pipe that connects a liquid transfer source and a liquid transfer destination to form a liquid transfer path is known.
In Patent Document 1, as this type of liquid transport device, waste liquid received by a cap member (liquid transport source) covering a recording head that ejects ink is sucked by a suction pump, and a waste liquid tank (liquid transport) is sucked through a suction tube. An inkjet recording device provided with a device for transporting to the above) is described.

In a liquid transport device that connects a liquid feed pump and a liquid transport destination with a transport pipe to transport liquid, if the transport pipe between the liquid feed pump and the liquid transport destination is long, the liquid feed pump alone can reach the transport destination. May not be able to be transported.

In order to solve the above-mentioned problems, the present invention is in a liquid transport device including a transport pipe that connects a liquid transport source and a liquid transport destination to form a liquid transport path, in a state where the transport pipe is pressed. The pressing moving means for moving the liquid in the transport pipe toward the downstream side in the transport direction is provided , and the pressing moving means is an eccentric cam .

According to the present invention, there is an excellent effect that even a device having a long transfer pipe between a transfer source and a liquid transfer destination can smoothly transfer the liquid to the liquid transfer destination. ..

Schematic diagram of a waste liquid transfer device that conveys the waste liquid collected by the cap unit to the waste liquid tank. The schematic diagram which shows the schematic structure of a printer. The schematic diagram which shows the structure of the image forming part. The perspective explanatory view of the ink ejection part explaining the slide operation of a cap unit. Explanatory drawing of the shape of a roller roller. Explanatory drawing of a roller roller that can rotate in only one direction and a mechanism that regulates the rotation direction of the roller roller.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[Overview]
FIG. 2 is a schematic diagram showing a schematic configuration of a printer 1 which is an inkjet recording device as a “device for discharging a liquid” according to the present embodiment.
The printer 1 is mainly composed of a paper feeding unit 100, an image forming unit 200, a drying unit 300, and a paper ejection unit 400.

In the printer 1, the image forming unit 200 forms an image with ink, which is a liquid for forming an image, on the paper P (medium, sheet material, and recording material) to be fed from the paper feeding unit 100. Then, after the ink adhering to the paper P is dried in the drying unit 300, the paper P is discharged from the paper ejection unit 400.

[Paper feed section]
The paper feed unit 100 mainly includes a paper feed tray 110 on which a plurality of paper Ps are loaded, a feeding device 120 that separates and feeds the paper P from the paper feed tray 110 one by one, and an image forming unit for the paper P. It is composed of a pair of resist rollers 130 to be fed to 200.

As the feeding device 120, any feeding device such as a device using rollers and rollers and a device using air suction can be used. The paper P sent out from the paper feed tray 110 by the feeding device 120 is fed to the image forming unit 200 by driving the resist roller pair 130 at a predetermined timing after the tip of the paper P reaches the resist roller pair 130. Will be done.

In the present embodiment, the paper feeding unit 100 is not limited in its configuration as long as it feeds the paper P to the image forming unit 200.

[Image forming part]
The image forming unit 200 is mainly composed of a receiving cylinder 201, a paper transport drum 210 (conveying member), an ink ejection unit 220, and a delivery cylinder 202.
FIG. 3 is a schematic diagram showing the configuration of the image forming unit 200.
The receiving cylinder 201 is a member that receives the fed paper P (medium) and conveys it to the downstream side. The paper transport drum 210 is a cylindrical member that supports and transports the paper P transported by the receiving cylinder 201 on the outer peripheral surface. The ink ejection unit 220 is a mechanism for ejecting ink toward the paper P conveyed by the paper conveying drum 210. The delivery cylinder 202 is a member that delivers the paper P conveyed by the paper transfer drum 210 to the drying unit 300.

The tip of the paper P conveyed from the paper feeding unit 100 to the image forming unit 200 is gripped by the receiving paper gripper 201a provided on the surface of the receiving cylinder 201, and is conveyed as the surface of the receiving cylinder 201 moves. The paper P conveyed by the receiving cylinder 201 is delivered to the paper transport drum 210 at a position facing the paper transport drum 210.

A transport paper gripper 210a is also provided on the surface of the paper transport drum 210, and the tip of the paper P delivered to the paper transport drum 210 is gripped by the transport paper gripper 210a. Further, a plurality of suction holes are dispersedly formed on the surface of the paper transport drum 210, and a suction airflow toward the inside of the paper transport drum 210 is generated in each suction hole by the suction device 211.

The tip of the paper P delivered from the receiving cylinder 201 to the paper transport drum 210 is gripped by the transport paper gripper 210a, and is attracted to the surface of the paper transport drum 210 by the suction airflow to move the surface of the paper transport drum 210. It is transported along with.

The ink ejection unit 220 of the present embodiment ejects four colors of ink of C (cyan), M (magenta), Y (yellow), and K (black) to form an image, and is individual for each ink. The liquid discharge head 230 (230C, 230M, 230Y, 230K) is provided. Since the four liquid ejection heads 230 have the same configuration except that the colors of the ejected inks are different, "C", "M", "Y", which indicate the colors of the ejected inks, are described below. Subscripts such as "K" will be omitted as appropriate.

The liquid discharge head 230 is not limited in its configuration as long as it discharges liquid from the discharge hole, and any configuration can be adopted. If necessary, a liquid ejection head that ejects a special ink such as white, gold, or silver may be provided, or a liquid ejection head that ejects a liquid that does not form an image, such as a surface coating liquid, may be provided.

The ejection operation of each of the four liquid ejection heads 230 of the ink ejection unit 220 is controlled by a drive signal corresponding to the image information. When the paper P conveyed by the paper transfer drum 210 passes through the region facing the ink ejection unit 220, each color ink is ejected from the four liquid ejection heads 230, and an image corresponding to the image information is formed.

In the present embodiment, the image forming unit 200 is not limited in its configuration as long as the liquid is adhered to the paper P to form an image.

[Dry part]
The drying unit 300 mainly includes a drying mechanism 301 for drying the ink adhering on the paper P in the image forming unit 200, and a conveying mechanism 302 for conveying the paper P conveyed from the image forming unit 200. Has been done.

The paper P conveyed from the image forming unit 200 is received by the conveying mechanism 302, then conveyed so as to pass through the drying mechanism 301, and is delivered to the paper ejection unit 400. When passing through the drying mechanism 301, the ink on the paper P is subjected to a drying treatment, whereby the liquid content such as water in the ink evaporates, the ink is fixed on the paper P, and the curl of the paper P is formed. It is suppressed.

[Paper ejection section]
The paper ejection unit 400 is mainly composed of a paper ejection tray 410 on which a plurality of sheets P are loaded. The paper P conveyed from the drying unit 300 is sequentially stacked and held on the paper ejection tray 410.

In the present embodiment, the paper ejection unit 400 is not limited in its configuration as long as it ejects the paper P.

[Other functional parts]
The printer 1 of the present embodiment is composed of a paper feed unit 100, an image forming unit 200, a drying unit 300, and a paper ejection unit 400, but other functional units may be added as appropriate. For example, after adding a pre-processing unit for performing image formation pre-processing between the paper feeding unit 100 and the image forming unit 200, or after performing image forming post-processing between the drying unit 300 and the paper ejection unit 400. A processing unit can be added.

Examples of the pretreatment unit include a treatment liquid coating process in which a treatment liquid for reacting with ink to suppress bleeding is applied to the paper P, but the content of the pretreatment is not particularly limited. ..

Further, as the post-processing unit, for example, a paper reversal transfer process for inverting the paper P on which the image is formed by the image forming unit 200 and sending the paper P to the image forming unit 200 again to form an image on both sides of the paper P is performed. , A process of binding a plurality of sheets of paper P on which an image is formed, and the like. However, there are no particular restrictions on the content of post-processing.

In the present embodiment, the device for discharging the liquid is described by the example of the printer 1 which is an inkjet recording device. The printer 1 includes a liquid ejection head 230 that ejects liquid ink toward the surface to be dried of paper P, which is a sheet material.

In this embodiment, a plurality of liquid discharge heads are arranged in the paper width direction (direction orthogonal to the transport direction) to form a long liquid discharge head (line head). Unless otherwise specified, "liquid discharge head" means "line head".

The individual liquid ejection heads 230 of the present embodiment are line-type liquid ejection heads having a length (length in the main scanning direction) over the width direction of the paper P, from the individual liquid ejection heads 230 with respect to the paper P. Discharge ink.

In the present embodiment, the individual liquid ejection heads 230 are individually arranged radially around the rotation axis of the paper transport drum 210.

The liquid ejection head 230 ejects ink from a nozzle which is an ejection hole. The ink ejection unit 220 includes a cap unit 290 having a cap that covers each nozzle surface of each liquid ejection head 230 provided with nozzles and has a role of protecting the nozzle surface.
The cap unit 290 is slidable with respect to the liquid ejection head 230 in the axial direction of the paper transport drum 210 (direction orthogonal to the paper surface of FIGS. 2 and 3). By sliding, the cap unit 290 moves between the capping position facing the nozzle surface 230f and the retracted position not facing the nozzle surface 230f.

As a moving mechanism for sliding the cap unit 290, a configuration for sliding the cap unit 290 by controlling the moving direction of the endless belt holding the cap unit 290 can be mentioned. The configuration is not limited to the configuration using the endless belt, and as another example, the rack gear is arranged in the cap unit 290, and the cap unit 290 is slid by rotating the pinion gear provided on the device main body side of the printer 1. Can be mentioned.

The cap unit 290 covers the nozzle surface of the liquid ejection head 230 except when forming an image, and collects ink clogged in the nozzle, ink ejected from the nozzle that does not contribute to image formation, ink adhering to the nozzle surface, and the like as waste liquid. ..

FIG. 4 is a perspective explanatory view of the ink ejection portion 220 for explaining the sliding operation of the cap unit 290. FIG. 4 shows a head holding frame 231 that holds the liquid discharge head 230, a cap holding guide 291 that slides the cap unit 290 in the direction of the arrow “A” in FIG. 4, and a cap unit 290. .. FIG. 4 shows a state in which the liquid discharge head 230 is removed, and the liquid discharge head 230 is arranged in the head arrangement space 230a in FIG. 4.
In the ink ejection unit 220 shown in FIGS. 2 and 3, there are four combinations of the liquid ejection head 230 and the cap unit 290 formed radially around the rotation axis of the paper transport drum 210. In the ink ejection unit 220 shown in FIG. 4, there are six combinations of the head arrangement space 230a for arranging the liquid ejection head 230 radially formed around the rotation axis of the paper transport drum 210 and the cap unit 290 for convenience. It has become.

In the ink ejection portion 220, the cap holding guide 291 extends from the head holding frame 231 toward the rear of the main body of the apparatus (direction of the arrow “A1” in FIG. 4) to form a retracting area 90. The cap unit 290 is held by the cap holding guide 291 and can slide in the front-rear direction (direction of the arrow "A" in FIG. 4) of the apparatus main body of the printer 1.
In FIG. 4, one of the six cap units 290 is retracted to a retracted position within the retracted area 90, and the other five are at capping positions facing the respective liquid discharge heads 230.

When the printer 1 prints, the cap unit 290 slides to the evacuation area 90 at the rear of the apparatus main body, and the printing unit having the liquid discharge head 230 drops to the position where the cap unit 290 was before the slide to print. conduct.

FIG. 1 is a schematic explanatory view of a waste liquid transfer device 10 that conveys the waste liquid collected by the cap unit 290 to the waste liquid tank 16. FIG. 1A shows a state in which the cap unit 290 is in the capping position facing the liquid discharge head 230, and FIG. 1B shows a state in which the cap unit 290 is in the retracted position.
In the printer 1, the cap unit 290 that covers the nozzle surface 230f of the liquid discharge head 230 and protects the nozzle surface 230f slides between the capping position shown in FIG. 1A and the retracting position shown in FIG. 1B. It is configured to move.

The waste liquid transport device 10 includes a suction pump 13 that sucks the liquid ink in the cap unit 290, which is the liquid transport source, and pumps the ink toward the waste liquid tank 16 which is the transport destination. The suction pump 13 communicates with the cap unit 290 and discharges ink from the cap unit 290 to the downstream side. The waste liquid tank 16 is a waste liquid storage unit that collects and stores the ink collected from the cap unit 290. Further, the waste liquid transfer device 10 includes a waste liquid tube 14 which is a transfer pipe (liquid flow path) for connecting the suction pump 13 and the waste liquid tank 16 to form a waste liquid path which is a transfer path. The waste liquid tube 14 is made of an elastic material that collapses when pressed and returns to its original state when the pressing pressure disappears.

Further, the waste liquid transfer device 10 is a roller roller 15 which is a pressing movement means for moving the waste liquid tube 14 toward the downstream side in the ink transfer direction (in the direction of the arrow “A1” in FIG. 1) in the state of pressing the waste liquid tube 14. To prepare for.
The roller roller 15 is arranged in the cap unit 290 and comes into contact with the waste liquid tube 14.

When printing is completed by the printer 1, the cap unit 290 located at the retracted position moves to the capping position, and the nozzle surface 230f of the liquid discharge head 230 is covered with the cap unit 290. By driving the suction pump 13 with the cap unit 290 in the capping position, the gas or liquid in the cap unit 290 is sucked by the suction pump 13. As a result, fixed ink or foreign matter that causes clogging of the nozzle is discharged into the cap unit 290 from the nozzle opened in the nozzle surface 230f. Further, the waste liquid containing the fixed ink and foreign matter in the cap unit 290 is discharged to the waste liquid tank 16 located on the downstream side of the suction pump 13.

In the waste liquid tube 14 connecting the suction pump 13 and the waste liquid tank 16, the waste liquid is conveyed toward the waste liquid tank 16 by the positive pressure generated by the suction pump 13. However, if the waste liquid path from the suction pump 13 to the waste liquid tank 16 is long, the waste liquid cannot be completely conveyed to the waste liquid tank 16 under the positive pressure generated by the suction pump 13, and the waste liquid may remain in the waste liquid tube 14. If the waste liquid remains in the waste liquid tube 14, the ink may solidify in the waste liquid tube 14 and the waste liquid tube 14 may be clogged.

After the pumping of the waste liquid by the suction pump 13 is completed, the cap unit 290 moves from the capping position to the retracted position when the next printing is performed.
In the present embodiment, when the cap unit 290 moves from the capping position to the evacuation position, the roller roller 15 provided at the bottom of the cap unit 290 moves while crushing the waste liquid tube 14 crawled under the cap unit 290. To go.

As a result, the portion of the waste liquid tube 14 that is crushed by the roller roller 15 and whose cross-sectional area of the waste liquid path becomes smaller moves to the downstream side in the transport direction of the waste liquid as the cap unit 290 provided with the roller roller 15 moves. At this time, the waste liquid pushed by the inner wall surface of the waste liquid tube 14 in the portion where the cross-sectional area is reduced moves to the downstream side in the transport direction. Therefore, the waste liquid remaining in the waste liquid tube 14 on the downstream side in the transport direction of the waste liquid from the suction pump 13 can be flushed to the waste liquid tank 16. Therefore, even if the waste liquid tube 14 which is a transport pipe between the suction pump 13 which is a liquid feed pump and the waste liquid tank 16 which is a liquid transport destination is long and the fluid resistance in the waste liquid tube 14 is large, the waste liquid tank The waste liquid can be smoothly transferred to 16.

The printer 1 is an inkjet printer including a liquid discharge head 230 and a cap unit 290 which is a cap member facing the nozzle surface 230f of the liquid discharge head 230 and collecting waste liquid containing fixed ink, foreign matter, and the like. Further, the printer 1 includes a waste liquid tank 16 which is a recovery liquid storage unit (liquid storage unit) for storing the waste liquid collected by the cap unit 290. Further, as a liquid transporting means for transporting the waste liquid inside the cap unit 290 to the waste liquid tank 16, the waste liquid transport device 10 described with reference to FIG. 1 is provided. As a result, even in an inkjet printer that has no choice but to lengthen the transfer path from the suction pump 13 that sucks the waste liquid in the cap unit 290 to the waste liquid tank 16, the waste liquid can be smoothly transferred to the waste liquid tank 16. Can be done.

Patent Document 1 describes a configuration in which droplets that do not contribute to recording are discharged to a cap, the waste liquid in the cap is temporarily stored in a tube, and the stored waste liquid is collected by a suction pump and discharged to a waste liquid tank. Has been done. In the configuration of Patent Document 1, when the transport path of the waste liquid from the suction pump to the waste liquid tank is long, the problem that the waste liquid cannot be completely transported to the waste liquid tank by the positive pressure generated in the tube by the drive of the suction pump is prevented. Can't.

In the printer 1 of the present embodiment, when the cap unit 290 is moved to the retracted position, the roller roller 15 presses and crushes the waste liquid tube 14, and moves in the pressed state to remove the ink in the waste liquid tube 14. The configuration is such that the contained waste liquid is forcibly transported to the downstream side in the transport direction. Therefore, among the waste liquid transport paths, the waste liquid staying in the transport path on the downstream side of the suction pump 13 can be discharged, the transport path on the downstream side of the suction pump 13 is long, and the fluid resistance is large. Even if there is, it is possible to smoothly transport the waste liquid.

In the printer 1, the cap unit 290 is movable between the capping position and the retracting position, and a part of the waste liquid tube 14 is arranged along the moving direction of the cap unit 290. Then, the roller roller 15 moves toward the downstream side in the transport direction in conjunction with the movement of the cap unit 290. According to this, it is possible to realize a configuration in which the roller roller 15 is moved toward the downstream side in the transport direction of the waste liquid in a state where the waste liquid tube 14 is crushed by the roller roller 15 without providing a dedicated moving mechanism for moving the roller roller 15. ..

Further, in the printer 1, when the cap unit 290 moves from the capping position to the retracted position, the roller roller 15 which is a pressing moving means moves while pressing the waste liquid tube 14 which is a liquid flow path. In this configuration, the waste liquid can be transported by the roller roller 15 every time the cap unit 290 moves to the evacuation position, and the waste liquid by the roller roller 15 does not need to be moved only for the transportation of the waste liquid by the roller roller 15. Can be transported. Therefore, the time for moving the roller roller 15 to convey the waste liquid can be reduced.

As a configuration in which the roller roller 15 presses the waste liquid tube 14, it is preferable to provide a contact / detachment mechanism for bringing the roller roller 15 into contact with the waste liquid tube 14. When the cap unit 290 is in the capping position, the roller roller 15 is separated from the waste liquid tube 14 by the contact / detachment mechanism, or the amount of crushing is reduced. As a result, when the waste liquid is pumped by the suction pump 13, it is possible to prevent the waste liquid from being difficult to be transferred to the portion crushed by the pressing of the roller roller 15 in the waste liquid tube 14, and efficient pumping can be performed. .. Then, before the cap unit 290 moves from the capping position to the evacuation position, the roller roller 15 is pressed against the waste liquid tube 14 by the contact / detachment mechanism to crush the waste liquid tube 14 and flush the waste liquid when the cap unit 290 moves. be able to.

Further, even when the cap unit 290 moves from the retracted position to the capping position, the roller roller 15 may be separated from the waste liquid tube 14 by the contact / detachment mechanism, or the crushing amount may be reduced. As a result, it is possible to prevent the waste liquid from flowing back in the waste liquid tube 14 due to the portion of the waste liquid tube 14 crushed by the roller roller 15 moving to the upstream side in the transport direction.

FIG. 1B shows a state in which the ink in the range indicated by the broken line region “α” of the waste liquid tube 14 is swept toward the waste liquid tank 16 by the roller roller 15. The waste liquid tube 14 in the range indicated by the broken line region “α” is crawled by the cap holding guide 291 shown in FIG. 4, while the roller roller 15 presses the waste liquid tube 14 against the cap holding guide 291 forming the fixed wall. Moving. The roller roller 15 crushes the waste liquid tube 14 by sandwiching the waste liquid tube 14 with the cap holding guide 291 and moves with respect to the cap holding guide 291 to convey the position of the crushed portion of the waste liquid tube 14. It can be moved downstream in the direction.

The shape of the pressing moving means is not limited to the roller shape such as the roller roller 15, and the transport pipe is crushed by pressing and moves to the downstream side in the transport direction of the liquid in the transport pipe while being pressed against the transport pipe. Anything is fine.
Further, the pressing moving means is not limited to the configuration of moving while pressing the transport pipe against the fixed wall as in the present embodiment. For example, the pressing moving means is a holding member that sandwiches the transport pipe, and the holding member crushes the transport pipe by sandwiching the transport pipe, and the holding member moves to the downstream side in the transport direction in the crushed state. May be good.

As shown in FIGS. 2 to 4, the printer 1 includes a plurality of combinations of the liquid discharge head 230 and the cap unit 290. Therefore, the same number of waste liquid transporting devices 10 as the cap units 290 corresponding to each of the plurality of cap units 290 are provided.

As shown in FIG. 1 (b), the roller roller 15 moves in the horizontal direction while crushing the waste liquid tube 14 in conjunction with the horizontal movement of the cap unit 290. Gravity contributes to the movement of the waste liquid in the portion of the path where the waste liquid path formed by the waste liquid tube 14 goes downward, so that the waste liquid is unlikely to remain in the waste liquid tube 14. On the other hand, in the portion of the path where the waste liquid path is directed in the horizontal direction, gravity does not contribute to the movement of the waste liquid, and the waste liquid tends to remain in the waste liquid tube 14. By assisting the movement of the waste liquid in the waste liquid path in the horizontal direction with the roller roller 15, the waste liquid can be efficiently transported.

The printer 1 of the present embodiment has a configuration in which the moving speed at which the cap unit 290 moves from the capping position to the retracting position can be variably controlled. As a result, the moving speed of the roller roller 15 provided in the cap unit 290 can be variably controlled. By changing the moving speed of the roller roller 15, the waste liquid can be flushed out at a speed corresponding to the state of the waste liquid in the waste liquid tube 14.

Specifically, when a long time elapses from the end of the printing operation until the next printing operation is performed, the waste liquid remaining in the waste liquid tube 14 is left for a long time, and is thickened by the ink contained in the waste liquid tube 14 and is difficult to be extruded. It may be in a state. If an attempt is made to push out the thickened waste liquid in a state where the moving speed of the roller roller 15 is high, the waste liquid cannot follow the movement of the roller roller 15, and may be crushed in the waste liquid tube 14 and stuck to the inner wall of the waste liquid tube 14. be. On the other hand, if the moving speed of the roller roller 15 is set to a slow speed so that the thickened waste liquid can be washed away, the moving time of the roller roller 15 becomes unnecessarily long when the waste liquid having low viscosity is washed away. Further, in the configuration in which the roller roller 15 is provided in the cap unit 290 as in the present embodiment, the movement time of the cap unit 290 from the capping position to the retracted position becomes long, and the time until the printing start of the printer 1 becomes long. ..

On the other hand, in the printer 1, the moving speed of the cap unit 290 can be variably controlled, and when the next printing is performed after a predetermined time has elapsed from the previous printing, the moving speed of the cap unit 290 is moved toward the retracted position. Slow down. This makes it possible to discharge the waste liquid containing the ink thickened by leaving it for a long period of time. Further, when the next printing is performed before the lapse of a predetermined time, the moving speed of the cap unit 290 toward the retracted position is increased. As a result, it is possible to prevent the moving time of the roller roller 15 from becoming unnecessarily long, and it is possible to prevent the time until the start of moving the printer 1 from becoming long.

Next, the shape of the roller roller 15 will be described.
5A and 5B are explanatory views of the shape of the roller roller 15, FIG. 5A is an explanatory view of the circular roller roller 15, and FIG. 5B is an explanatory view of the egg-shaped eccentric roller roller 15. ..
Any of the shapes of FIGS. 5 (a) and 5 (b) can be used. However, by using a flat cam such as the egg-shaped eccentric shape shown in FIG. 5B and controlling the angle of the flat cam, the pressing state of the waste liquid tube 14 by the roller roller 15 can be adjusted, and the waste liquid can be efficiently discharged. It is possible to transport and prevent backflow of waste liquid.

Specifically, the waste liquid tube is formed by bringing the portion of the roller roller 15 shown in FIG. 5 (b) where the distance from the rotation axis to the outer peripheral surface is long (the lower portion of the roller roller 15 in FIG. 5 (b)) into contact with the waste liquid tube 14. The pressing force on 14 can be increased. As a result, the amount of crushing of the waste liquid tube 14 can be increased. In this state, by stopping the rotation of the roller roller 15 and moving it in the direction of the arrow “A1” in FIG. 1 (b), the waste liquid can be efficiently flushed toward the downstream side in the transport direction.

On the other hand, the waste liquid tube 14 is formed by facing the portion where the distance from the rotation axis of the roller roller 15 shown in FIG. 5 (b) to the outer peripheral surface (the upper portion of the roller roller 15 in FIG. 5 (b)) faces the waste liquid tube 14. The pressing force on the can be reduced. As a result, the roller roller 15 can be separated from the waste liquid tube 14 or the amount of crushing of the waste liquid tube 14 can be reduced. In this state, the rotation of the roller roller 15 is stopped and moved in the direction opposite to the arrow "A1" direction in FIG. 1 (b) (in the direction of the arrow "A2" in FIG. 4), whereby the waste liquid is discharged into the waste liquid tube 14. It is possible to prevent backflow inside.
Further, even when the waste liquid is pumped by the suction pump 13, the portion where the distance from the rotation axis of the roller roller 15 to the outer peripheral surface is shortened is made to face the waste liquid tube 14, so that the waste liquid is not easily transported in the crushed portion. It can be prevented from becoming, and efficient pumping can be performed.

The roller roller 15 may be configured to rotate when moving toward the upstream side in the transport direction of the waste liquid in the waste liquid tube 14, and not rotate when moving toward the downstream side in the transport direction. An example of such a configuration is shown in FIG.
FIG. 6 is an explanatory diagram of a roller roller 15 that can rotate in only one direction and a mechanism that regulates the rotation direction of the roller roller 15.

In the configuration shown in FIG. 6, a gear 32 fixed to a roller rotation shaft 151 to which a roller roller 15 is fixed and a pawl 31 that can swing around a pawl shaft 33 are provided. The roller rotating shaft 151 and the pawl shaft 33 are held by a cap unit 290, which is a holding member that holds and moves the roller roller 15.
In this configuration, when the roller roller 15 tries to rotate in the direction of the arrow “B” in FIG. 6, the pawl 31 swings along the teeth of the rotating gear 32, and the roller roller 15 can rotate freely. On the other hand, when the roller roller 15 tries to rotate in the direction opposite to the arrow "B" direction in FIG. 6, the pawl 31 hits the teeth of the rotating gear 32, the rotation of the gear 32 is stopped, and the rotation of the roller roller 15 is stopped. ..

In this configuration, when the cap unit 290 moves toward the evacuation position, the roller roller 15 is brought into contact with the waste liquid tube 14 in a state where the rotation is stopped, and the waste liquid in the waste liquid tube 14 is filtered out on the downstream side in the transport direction. Can be swept away. On the other hand, when the cap unit 290 returns to the capping position again, the roller roller 15 can rotate freely, so that the cap unit 290 can be moved without applying a load to the waste liquid tube 14. As a result, it is possible to prevent the waste liquid from flowing back in the waste liquid tube 14.

The waste liquid tube 14, which is a transport pipe, is made of an elastic material. Then, even if the suction pump 13 to which the end on the upstream side in the liquid transport direction of the waste liquid tube 14 is connected moves by the movement of the cap unit 290, the waste liquid tube 14 is deformed and the suction pump 13 and the waste liquid tank 16 are connected to each other. You can stay connected. However, the transport pipe made of such an elastic material is deformed so that the internal space, which is the transport path, expands when the positive pressure of the liquid feed pump acts, and a part of the energy for transporting the liquid by the liquid feed pump. Is used to deform the transport pipe. The longer the transport path formed by the transport pipe made of elastic material, the larger the energy used for deformation, and the positive pressure generated by the liquid feed pump cannot transport the liquid to the transport destination, and the liquid enters the transport pipe. Residual defects are likely to occur.
In the present embodiment, the waste liquid tube 14 made of an elastic material is crushed by pressing with a roller roller 15, and the waste liquid inside the waste liquid tube 14 is pushed downstream in the transport direction, so that the waste liquid continues to remain in the waste liquid tube 14. Can be prevented.

In the present embodiment, the waste liquid transporting device for transporting the waste liquid collected by the cap member of the inkjet printer has been described, but the liquid transporting device according to the present invention is not limited to this. For example, as in the configuration described in Japanese Patent Application Laid-Open No. 2016-159501, even in a device for sucking the deposits collected by the wiper blade with a vacuum suction device and transporting them to the recovery tank, the deposits to be transported are liquid. The present invention can be applied when the above is included.
Further, the present invention is not limited to the device for transporting a liquid containing ink in an image forming apparatus, and includes a liquid feeding pump that sucks the liquid inside the liquid transporting source and pumps it toward the liquid transporting destination, and a liquid feeding pump. Any device provided with a transport pipe that connects to a liquid transport destination to form a liquid transport path can be applied.
Further, as the liquid feed pump such as the suction pump 13, a known liquid feed pump such as a hydraulic pump, a screw pump, or a squeeze pump can be used.

In the printer 1 of the present embodiment, the roller roller 15 which is the pressing moving means of the waste liquid transporting device 10 slides together with the cap unit 290, but the pressing moving means such as the roller roller 15 may slide independently. Further, in the case where the cap member is fixed and the unit having the liquid discharge head moves, the pressing moving means slides in conjunction with the movement of the unit having the liquid discharge head, and the liquid is conveyed to the downstream side. good. Further, not limited to these, if there is a member that moves toward the downstream side in the liquid transport direction along the transport pipe such as the waste liquid tube 14, the pressing moving means is moved in conjunction with the moving member. May be good.

Further, in the printer 1, the roller roller 15 which is a pressing moving means moves while crushing the waste liquid tube 14 which is a transport pipe at the timing when the suction pump 13 which is a liquid feeding pump is not driven. When the pressing moving means moves while crushing the transport pipe at the timing when the liquid feed pump is driven, the cross-sectional area of the transport path of the portion crushed by the pressing moving means in the transport pipe when the liquid is pumped by the liquid feed pump. May become narrower, making it difficult for the liquid to be transported. On the other hand, by moving the pressing moving means at a timing when the liquid feeding pump is not driven, as in the printer 1, efficient pressure feeding can be performed when the liquid feeding pump is driven.

In the present embodiment, the "liquid discharge head" is a functional component that discharges and injects liquid from a discharge hole (nozzle). 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. , Solutions, suspensions, emulsions and the like containing edible materials such as natural pigments. These can be used, for example, in inks for inkjet, surface treatment liquids, liquids for forming electronic elements and light emitting elements, electronic circuit resist patterns, material liquids for three-dimensional modeling, and the like. 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.

In the present embodiment, a plurality of liquid discharge heads are arranged in the paper width direction (direction orthogonal to the transport direction) to form a long liquid discharge head (line head), and the liquid discharge head does not move with respect to the apparatus main body. It is composed. The liquid discharge head may be configured to form a "liquid discharge unit" together with other parts and print while moving with respect to the main body of the apparatus.

The "liquid discharge unit" is a liquid discharge head integrated with functional parts and a mechanism, and is a collection of parts related to liquid discharge. For example, the "liquid discharge unit" includes a combination of at least one of a supply circulation mechanism, a carriage, a maintenance / recovery mechanism, and a main scanning movement mechanism with a liquid discharge head. 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, there is a liquid discharge unit in which a liquid discharge head and a supply circulation mechanism are integrated. In some cases, the liquid discharge head and the supply / circulation mechanism 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 supply circulation mechanism 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. 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 liquid discharge head to which a supply circulation mechanism or a flow path component is attached, and the liquid discharge head and the 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 shall include a single tube and a single loading unit.

The "device for discharging a liquid" is 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 the liquid includes not only a device capable of discharging the 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.

The "device that ejects liquid" includes an image forming apparatus that ejects ink to form an image on paper, and a powder in which powder is formed in layers for forming a three-dimensional model (three-dimensional model). There is a three-dimensional modeling device (three-dimensional modeling device) that discharges the modeling liquid to the body 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.

"A liquid to which a liquid can adhere" means a liquid to which a liquid can adhere at least temporarily, such as a liquid to which the liquid adheres and adheres to the liquid, and a liquid to which the liquid adheres and permeates. Specific examples include paper, recording paper, recording paper, film, recorded media such as cloth, electronic substrates, electronic components such as piezoelectric elements, powder layers (powder layers), organ models, and media such as 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. The shape of the "material to which the liquid can adhere" is not limited to the shape of a sheet such as paper P, and may be any shape as long as the material to which the liquid adheres. The "material to which a liquid can adhere" may be, for example, a film product, a cloth product for clothing, a building material such as wallpaper or a floor material, a leather product, or the like.

The "liquid" may have a viscosity and surface tension that can be discharged from the head, and is not particularly limited, but has a viscosity of 30 [mPa · s] or less at room temperature, under normal pressure, or by heating or cooling. It is preferable that it becomes. 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. , Solutions, suspensions, emulsions and the like containing edible materials such as natural pigments. These can be used, for example, in inks for inkjet, surface treatment liquids, liquids for forming electronic elements and light emitting elements, electronic circuit resist patterns, material liquids for three-dimensional modeling, and the like.

Further, the printer 1 of the present embodiment is a "device for discharging a liquid" in which a liquid discharge head and a device to which the liquid can adhere move relatively. Specific examples of the device that moves relatively include a line type device that does not move the liquid discharge head as in the present embodiment, a serial type device that moves the liquid discharge head, and the like. The "device for discharging a liquid" is not limited to a device in which the liquid discharge head and the device to which the liquid can adhere move relatively.

In addition to the "device for ejecting liquid", there is a processing liquid coating device for ejecting the processing liquid to the paper in order to apply the processing liquid to the surface of the paper for the purpose of modifying the surface of the paper. Further, there is an injection granulation device 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. Further, in the terms of the present application, image formation, recording, printing, printing, printing, modeling, etc. are all synonymous.

The above description is an example, and the effect peculiar to each of the following aspects is exhibited.
(Aspect 1)
A liquid transfer device such as a waste liquid transfer device 10 provided with a transfer tube such as a waste liquid tube 14 that connects a liquid transfer source such as a cap unit 290 and a liquid transfer destination such as a waste liquid tank 16 to form a transfer path for a liquid such as waste liquid. The present invention is characterized by comprising a pressing moving means such as a roller roller 15 that moves toward the downstream side in the transporting direction of the liquid in the transport pipe in a state where the transport pipe is pressed.
According to this, as described in the above embodiment, the transport pipe is crushed by being pressed by the pressing moving means. Further, when the pressing moving means moves in the pressed state, the portion crushed by the pressing moving means in the transport pipe and the cross-sectional area of the transport path becomes smaller moves to the downstream side in the liquid transport direction, and the cross-sectional area becomes smaller. The liquid pushed on the inner wall surface of the transport pipe in the portion where it has become is moved to the downstream side in the transport direction. Then, in the range in which the pressing moving means moves while pressing the transport pipe, the liquid can be swept downstream in the transport direction regardless of the length of the liquid transport path from the liquid transport source to the liquid transport destination. Therefore, even if the device has a long transport pipe between the transport source and the liquid transport destination, it is possible to smoothly transport the liquid to the liquid transport destination.

(Aspect 2)
The first aspect is characterized by comprising a liquid feeding pump such as a suction pump 13 that sucks the liquid inside the liquid transporting source and pumps it toward the liquid transporting destination via a transporting pipe.
According to this, as described in the above-described embodiment, the liquid remaining inside the transport pipe that cannot be pumped completely by the liquid feed pump can be swept downstream in the transport direction. Therefore, even if the device has a long transport pipe between the liquid transport source and the liquid transport destination and the fluid resistance in the transport pipe is large, it is possible to smoothly transport the liquid to the liquid transport destination. The arrangement of the liquid feed pump is not limited to the arrangement connected to the upstream end portion of the transport pipe in the transport direction as in the above embodiment, and may be the arrangement connected to the downstream end portion of the transport pipe in the transport direction. Further, the liquid transfer pump may be arranged in the middle of the transfer pipe connecting the liquid transfer source and the liquid transfer destination.

(Aspect 3)
In the first or second aspect, the pressing moving means is an eccentric cam.
According to this, as described in the above-described embodiment, the pressing state of the transport pipe by the pressing moving means can be adjusted.

(Aspect 4)
In any of aspects 1 to 3, the pressing moving means is a roller member such as a roller roller 15, and the roller member rotates when moving toward the upstream side in the transport direction of the liquid in the transport pipe and is downstream in the transport direction. It is characterized in that it does not rotate when moving toward the side.
According to this, as described in the above embodiment, when the roller member moves to the downstream side in the transport direction, the liquid inside the transport pipe can be swept away so as to filter out, and the roller member moves to the downstream side in the transport direction. When doing so, it is possible to suppress the backflow of the liquid inside the transport pipe.

(Aspect 5)
In any one of aspects 1 to 4, the moving speed of the pressing moving means can be variably controlled.
According to this, as described in the above embodiment, the liquid can be swept away at a speed corresponding to the state of the liquid inside the transport pipe. For example, in the case of a configuration for transporting a liquid containing ink, it is possible to transport the thickened ink by leaving it for a long time by changing the moving speed.

(Aspect 6)
A liquid discharge head such as a liquid discharge head 230 having a discharge surface such as a nozzle surface 230f in which a discharge hole such as a nozzle for discharging a liquid such as ink is formed, and a cap unit 290 or the like facing the discharge surface and collecting the liquid. A printer 1 or the like including a cap member, a recovery liquid storage unit such as a waste liquid tank 16 for storing the liquid collected by the cap member, and a liquid transfer means for transporting the liquid inside the cap member to the recovery liquid storage unit. The device for discharging a liquid is characterized in that, as a liquid transporting means, a liquid transport device such as the waste liquid transport device 10 according to any one of the first to fifth aspects is provided.
According to this, as described in the above-described embodiment, even a device that discharges a liquid having to lengthen a transport path for transporting a liquid such as waste liquid from a cap member to a recovered liquid storage portion is smooth. The liquid can be transported.

(Aspect 7)
In the sixth aspect, the cap member can move between a position facing the discharge surface (capping position, etc.) and a position not facing the discharge surface (evacuation position, etc.), and at least a part of the transport pipe is the cap member. The pressing moving means is arranged along the moving direction, and is characterized in that the pressing moving means moves toward the downstream side in the transport direction in conjunction with the movement of the cap member.
According to this, as described in the above-described embodiment, the pressing moving means is moved in the liquid transporting direction in a state where the transport pipe is crushed by the pressing moving means without providing a dedicated moving mechanism for moving the pressing moving means. It is possible to realize a configuration that moves toward the downstream side.

(Aspect 8)
A liquid discharge head such as a liquid discharge head 230 that discharges a liquid such as ink, a cap member such as a cap unit 290 that sucks the liquid from the liquid discharge head, and a waste liquid tank 16 or the like that houses the liquid sucked by the cap member. A liquid storage portion and a liquid flow path such as a waste liquid tube 14 connecting the cap member and the liquid storage portion are provided, and the cap member is provided with a liquid flow path when the cap member moves away from the liquid discharge head. It is characterized by having a pressing moving means such as a roller roller 15 that moves while pressing.
According to this, as described in the above embodiment, the liquid flow path is crushed by being pressed by the pressing moving means. When the pressing moving means moves in the pressed state, the portion crushed by the pressing moving means in the liquid flow path and the cross-sectional area of the liquid flow path becomes smaller moves to the downstream side in the liquid transport direction, and the cross-sectional area becomes smaller. The liquid pushed on the inner wall surface of the liquid flow path of the portion moves to the downstream side in the transport direction. Then, in the range in which the pressing moving means moves while pressing the liquid flow path, the liquid can be pushed downstream in the transport direction regardless of the length of the liquid transport path from the cap member to the liquid flow path. Therefore, even if the device has a long liquid flow path between the cap member and the liquid flow path, it is possible to smoothly transfer the liquid to the liquid transfer destination. Further, since the cap member has the pressing moving means, the pressing moving means is moved downstream in the liquid transporting direction in a state where the liquid flow path is crushed by the pressing moving means without providing a dedicated moving mechanism for moving the pressing moving means. It is possible to realize a configuration that moves toward the side.

(Aspect 9)
In the eighth aspect, when the cap member moves from the capping position facing the liquid discharge head to the retracted position not facing the liquid discharge head, the pressing moving means moves while pressing the liquid flow path. ..
According to this, as described in the above-described embodiment, it is possible to reduce the time for moving the pressing moving means to convey the liquid.

(Aspect 10)
Aspect 8 or 9, wherein the liquid feeding pump such as a suction pump 13 that sucks the liquid inside the cap member and pumps it toward the liquid accommodating portion through the liquid flow path is provided.
According to this, as described in the above-described embodiment, the liquid remaining inside the transport pipe that cannot be pumped completely by the liquid feed pump can be swept downstream in the transport direction. Therefore, even if the device has a long transport pipe between the liquid transport source and the liquid transport destination and the fluid resistance in the transport pipe is large, it is possible to smoothly transport the liquid to the liquid transport destination.

(Aspect 11)
In any of aspects 8 to 10, the pressing moving means is an eccentric cam.
According to this, as described in the above embodiment, the pressing state of the liquid flow path by the pressing moving means can be adjusted.

(Aspect 12)
In any of aspects 8 to 11, the pressing moving means is a roller member such as a roller roller 15, and the roller member rotates when moving toward the upstream side in the liquid transport direction in the liquid flow path and is in the transport direction. It is characterized in that it does not rotate when moving toward the downstream side.
According to this, as described in the above embodiment, when the roller member moves to the downstream side in the transport direction, the liquid inside the liquid flow path can be swept away so as to filter out, and the roller member moves to the downstream side in the transport direction. When moving, the backflow of the liquid inside the liquid flow path can be suppressed.

(Aspect 13)
In any of aspects 8 to 12, the moving speed of the pressing moving means can be variably controlled.
According to this, as described in the above embodiment, the liquid can be swept away at a speed corresponding to the state of the liquid inside the liquid flow path. For example, in the case of a configuration for transporting a liquid containing ink, it is possible to transport the thickened ink by leaving it for a long time by changing the moving speed.

(Aspect 14)
In any of aspects 7 to 13, the pressing moving means moves in the horizontal direction in conjunction with the horizontal movement of the cap member.
According to this, as described in the above embodiment, the transport path is in the horizontal direction, gravity does not contribute to the movement of the liquid, and the movement of the liquid in the portion where the liquid tends to remain is assisted by the pressing moving means. It is possible to move the liquid efficiently.

1 Printer 10 Waste liquid transfer device 13 Suction pump 14 Waste liquid tube 15 Roller 16 Waste liquid tank 32 Gear 33 Swing shaft 90 Evacuation area 100 Printer 100 Paper feed section 110 Paper feed tray 120 Feeding device 130 Resist roller pair 151 Roller rotation shaft 200 Image Forming unit 201 Receiving cylinder 201a Receiving paper gripper 202 Delivery cylinder 210 Paper transport drum 210a Conveying paper gripper 211 Suction device 220 Ink ejection unit 220 Liquid ejection head 230 Liquid ejection head 230a Head arrangement space 230f Nozzle surface 231 Head holding frame 290 Cap unit 291 Cap holding guide 300 Drying part 301 Drying mechanism 302 Conveying mechanism 400 Paper ejection part 410 Paper ejection tray P Paper

Japanese Unexamined Patent Publication No. 2010-000780

Claims (14)

In a liquid transport device provided with a transport pipe that connects a liquid transport source and a liquid transport destination to form a liquid transport path.
A pressing moving means for moving the liquid in the transport pipe toward the downstream side in the transport direction while pressing the transport pipe is provided .
The pressing moving means is a liquid transport device characterized by being an eccentric cam . In a liquid transport device provided with a transport pipe that connects a liquid transport source and a liquid transport destination to form a liquid transport path.
A pressing moving means for moving the liquid in the transport pipe toward the downstream side in the transport direction while pressing the transport pipe is provided.
The pressing moving means is a roller member.
The roller member is characterized in that it rotates when it moves toward the upstream side in the transport direction of the liquid in the transport pipe, and does not rotate when it moves toward the downstream side in the transport direction. In the liquid transfer device according to claim 1 or 2 .
A liquid transfer device comprising a liquid transfer pump that sucks the liquid inside the liquid transfer source and pressure-feeds the liquid toward the liquid transfer destination via the transfer pipe. In the liquid transport device according to any one of claims 1 to 3 ,
A liquid transfer device characterized in that the moving speed of the pressing moving means can be variably controlled. A liquid discharge head having a discharge surface formed with a discharge hole for discharging a liquid,
A cap member that faces the discharge surface and collects the liquid,
A recovered liquid accommodating portion for accommodating the liquid collected by the cap member,
In a device for discharging a liquid, comprising a liquid transporting means for transporting the liquid inside the cap member to the recovered liquid accommodating portion.
A device for discharging a liquid, which comprises the liquid transport device according to any one of claims 1 to 4 as the liquid transport means. In the device for discharging the liquid of claim 5 ,
The cap member can move between a position facing the discharge surface and a position not facing the discharge surface.
At least a part of the transport pipe is arranged along the moving direction of the cap member.
The pressing moving means is a device for discharging a liquid, which moves toward the downstream side in the transport direction in conjunction with the movement of the cap member. A liquid discharge head that discharges liquid and
A cap member that sucks the liquid from the liquid discharge head,
A liquid accommodating portion for accommodating the liquid sucked by the cap member,
A liquid flow path connecting the cap member and the liquid accommodating portion is provided.
The cap member has a pressing moving means that moves while pressing the liquid flow path when the cap member moves in a direction away from the liquid discharge head.
When the cap member moves from a capping position facing the liquid discharge head to a retracting position not facing the liquid discharge head, the pressing moving means moves while pressing the liquid flow path. A device that discharges liquid. A liquid discharge head that discharges liquid and
A cap member that sucks the liquid from the liquid discharge head,
A liquid accommodating portion for accommodating the liquid sucked by the cap member,
A liquid flow path connecting the cap member and the liquid accommodating portion is provided.
The cap member has a pressing moving means that moves while pressing the liquid flow path when the cap member moves in a direction away from the liquid discharge head.
A device comprising a liquid feeding pump that sucks the liquid inside the cap member and pumps the liquid toward the liquid accommodating portion through the liquid flow path. A liquid discharge head that discharges liquid and
A cap member that sucks the liquid from the liquid discharge head,
A liquid accommodating portion for accommodating the liquid sucked by the cap member,
A liquid flow path connecting the cap member and the liquid accommodating portion is provided.
The cap member has a pressing moving means that moves while pressing the liquid flow path when the cap member moves in a direction away from the liquid discharge head.
The pressing moving means is a device for discharging a liquid, which is an eccentric cam. A liquid discharge head that discharges liquid and
A cap member that sucks the liquid from the liquid discharge head,
A liquid accommodating portion for accommodating the liquid sucked by the cap member,
A liquid flow path connecting the cap member and the liquid accommodating portion is provided.
The cap member has a pressing moving means that moves while pressing the liquid flow path when the cap member moves in a direction away from the liquid discharge head.
The pressing moving means is a roller member.
The roller member discharges a liquid having a configuration that rotates when moving toward the upstream side in the transport direction of the liquid in the liquid flow path and does not rotate when moving toward the downstream side in the transport direction. Device. In the device for discharging the liquid according to any one of claims 7 to 10 .
A device for discharging a liquid, characterized in that the moving speed of the pressing moving means can be variably controlled. In the device for discharging the liquid according to any one of claims 5 to 11 .
The pressing moving means is a device for discharging a liquid, which moves in the horizontal direction in conjunction with the horizontal movement of the cap member. A liquid discharge head having a discharge surface formed with a discharge hole for discharging a liquid,
A cap member that faces the discharge surface and collects the liquid,
A recovered liquid accommodating portion for accommodating the liquid collected by the cap member,
In a device for discharging a liquid, comprising a liquid transporting means for transporting the liquid inside the cap member to the recovered liquid accommodating portion.
As the liquid transporting means, a liquid transport device including a transport pipe that connects a liquid transport source and a liquid transport destination to form a liquid transport path, and the transport pipe is in a state of pressing the transport pipe. A liquid transport device equipped with a pressing moving means for moving toward the downstream side in the liquid transport direction is provided.
The pressing moving means is a device for discharging a liquid, which moves in the horizontal direction in conjunction with the horizontal movement of the cap member. A liquid discharge head that discharges liquid and
A cap member that sucks the liquid from the liquid discharge head,
A liquid accommodating portion for accommodating the liquid sucked by the cap member,
A liquid flow path connecting the cap member and the liquid accommodating portion is provided.
The cap member has a pressing moving means that moves while pressing the liquid flow path when the cap member moves in a direction away from the liquid discharge head.
The pressing moving means is a device for discharging a liquid, which moves in the horizontal direction in conjunction with the horizontal movement of the cap member.

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