WO2014181554A1

WO2014181554A1 - Inkjet printer

Info

Publication number: WO2014181554A1
Application number: PCT/JP2014/050200
Authority: WO
Inventors: 和彦赤井
Original assignee: 株式会社セイコーアイ・インフォテック
Priority date: 2013-05-08
Filing date: 2014-01-09
Publication date: 2014-11-13
Also published as: JP6085221B2; JP2014218015A

Abstract

There has been a problem of having difficulty in removing an ink firmly adhered on a nozzle surface of an inkjet head in the cases of cleaning the nozzle surface using a wiper blade. The present invention uses, as the wiper blade, two kinds of wiper blades, i.e., a wiper blade configured from a porous member, and a wiper blade configured from an elastic member. Then, by having the wiper blades pass through a cleaning bath containing a cleaning liquid, the cleaning liquid is adhered on the wiper blades. Moving speed of the wiper blades is controlled, and in the cases of adhering the cleaning liquid on the nozzle surface, the wiper blades are moved at a high speed, and the cleaning liquid is adhered without sufficiently wiping the nozzle surface, and in the cases of wiping the nozzle surface, the wiper blades are moved at a low speed, and the nozzle surface is sufficiently wiped.

Description

inkjet printer

The present invention relates to an ink jet printer that records an image by ejecting ink.

Inkjet printers that record images by ejecting ink from inkjet heads onto recording media such as paper and resin films are known. Inkjet printers are required to improve performance such as high image quality, durability, and reliability. If foreign matter adheres to the nozzle surface of the ink jet head, ejection failure such as ink not being ejected or bent may occur due to the influence. Therefore, in a general ink jet printer, ink or the like adhering to the nozzle surface of the ink jet head is periodically wiped with an elastic wiper blade such as rubber to remove the adhering matter.

General nozzle plate of an ink jet head is provided with a fine nozzle on a resin plate. The surface on which the nozzle is provided is periodically wiped with an elastic wiper blade such as rubber to remove deposits, so that the wiped ink or dust adheres to the wipe blade. The adhering ink or dust is immersed in the cleaning liquid in the cleaning tank and is further dropped from the wipe blade. In this way, the wipe blade is always kept clean. For example, Japanese Patent Laid-Open No. 2002-79681 discloses a cleaner that removes ink and dust attached to the surface by applying vibration to the blade when the blade wiped off the ink attached to the nozzle plate moves to the ink removing section. A provided recording device is known.

JP 2002-79681 A

However, even when the wiper blade is always kept clean using the cleaner described in Patent Document 1, the ink adheres firmly to the nozzle plate of the inkjet head when using ink that uses a fast-drying solvent. In some cases, the adhered ink cannot be wiped off.

In particular, in a so-called wide format ink jet printer having a print width of more than 50 inches, the print operation by the ink jet head may be continuously performed for 10 meters or more, and the amount of dirt on the nozzle plate also increases. Therefore, the possibility that the above problem will occur is further increased. If dirt remains on the nozzle plate, ink cannot be sucked by the suction cap, or a discharge failure due to dirt occurs, resulting in a problem that the quality of the recorded image is deteriorated.

The present invention has been made in view of the above circumstances, and while having a simple configuration, it is possible to remove dirt such as ink adhering to the wipe blade after wiping, and to remove strong dirt adhering to the nozzle plate. An object is to provide an ink jet printer including a wiping unit for wiping.

In order to solve such a problem, the ink jet printer of the present invention includes a recording head having a nozzle row composed of a plurality of nozzles that eject ink, a carriage mounted with the recording head and moving in the main scanning direction, and the main scanning. A wipe blade for wiping the nozzle surface on which the nozzles of the recording head are formed while moving in a direction crossing the direction, a belt for fixing the wipe blade, a motor for driving the belt, A control unit that controls driving; and a cleaning tank that stores cleaning liquid. The belt is rotated by controlling the driving of the motor by the control of the control unit, and the cleaning liquid is attached to the wipe blade. An ink jet for wiping the nozzle surface of the recording head on which the nozzle is disposed with the wipe blade. In the printer, the wipe blade includes a first wipe blade, a second wipe blade, and a third wipe blade, and the first wipe blade and the second wipe blade are elastic members, The third wipe blade is a porous member, and when the wiper blade wipes the nozzle surface, the control means rotates the belt at a first speed and wipes the nozzle surface with the wipe blade. After passing a predetermined time without wiping, the belt is rotated at a second speed lower than the first speed to wipe the nozzle surface with the wipe blade, and the first When rotating the belt at a speed and wiping the nozzle surface with the wipe blade, the first surface of the nozzle surface is passed through the cleaning liquid. The wipe blade and the second wipe blade have a portion that floats and moves, and at least a part of the cleaning liquid adhered to the nozzle surface by the third wipe blade remains on the nozzle surface. To do.

According to the present invention, it is possible to remove dirt such as ink adhering to the wipe blade after wiping while having a simple configuration, and the accuracy of cleaning the inkjet head is greatly improved, and high-quality images can be recorded. An ink jet printer can be provided.

FIG. 1 is a schematic view of an ink jet printer. FIG. 2 is a block diagram of the ink jet printer. FIG. 3 is a schematic view of the wiping mechanism. FIG. 4 is a flowchart for explaining the operation.

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view of an inkjet printer. As shown in FIG. 1, the ink jet printer 1 of the present embodiment arranges a recording medium 50 horizontally and conveys it in the depth direction of the paper surface of FIG. 1, ejects ink from an ink jet recording head 9, and records the recording medium. Images, characters and the like corresponding to the recording data are recorded on the surface of 50. The recording medium 50 is paper, a resin film, or the like. This depth direction in the drawing is called the sub-scanning direction.

The inkjet printer 1 includes a transport unit 4 that transports the recording medium 50. In addition, a recording unit head 9 and a plurality of recording heads 9 are mounted, a carriage 8 that performs recording by reciprocating scanning in a direction orthogonal to the conveyance direction of the recording medium 50, a wipe unit 10 that wipes the recording head 9, and a recording A capping unit 12 that caps the head 9 is provided. The direction of reciprocating scanning is called the main scanning direction. The ink jet printer 1 includes control means for controlling the entire apparatus including reception of recording data and control of recording operation.

The transport unit 4 includes a plurality of transport roller pairs 3 that are rotated around a horizontal axis along the paper surface by a motor 5 on the flat platen 2 that extends in the depth direction of the paper surface of FIG. The transport roller pair 3 includes a grid roller that is rotatably supported around a rotation axis parallel to the rotation axis, and a pinch roller that is energized by the grid roller. The recording medium 50 is conveyed while being sandwiched between the grid roller and the pinch roller. As the grid roller rotates, the recording medium 50 is conveyed from the depth direction to the near side.

The carriage 8 is provided so as to be movable along a carriage rail 7 that extends in a direction perpendicular to the conveyance direction of the recording medium 50 above the conveyance unit 4, the wipe unit 10, and the capping unit 12. A motor 6 is also provided for reciprocally moving the carriage 8 on the carriage rail 7 so as to be capable of position control and speed control. A linear scale (not shown) is provided along the carriage rail 7, and a linear sensor for detecting the scale of the linear scale is provided in the carriage 8. The position of the carriage 8 can be detected, and the positions of the plurality of recording heads 9 fixed to the carriage 8 at a fixed position can be detected accordingly.

Furthermore, a detachable ink cartridge 14 for supplying recording ink to the recording head 9 is provided, and the ink cartridge 14 and the recording head 9 are connected by an ink tube 15 for supplying ink.

In the present embodiment, the ink cartridge 14 is provided with a plurality of colors of ink for performing color recording, and can be supplied to the recording head 9 for each color via a plurality of ink tubes 15 as pipes. ing. The ink cartridge 14 is provided with a plurality of ink tanks corresponding to each ink, and each ink is accommodated in a corresponding ink tank.

The carriage 8 is provided with a plurality of recording heads 9 on the lower surface side according to the ink color and recording range, and the ink supplied from the ink tube 15 is distributed to the recording heads 9 that perform recording of the same color. Supplied. The carriage 8 is provided with a cooling fan 16 for keeping the temperature of each recording head 9 within an appropriate temperature range.

Although details of the recording head 9 are not shown, an ink chamber for supplying ink to each nozzle and an ejection mechanism using a piezoelectric element are provided. The recording head 9 is configured to be able to perform an idle driving operation in which ink is ejected and the ink meniscus of the nozzle is finely oscillated by an ejection mechanism using the piezoelectric element. The ink jet printer 1 records an image by ejecting ink from nozzles outside the image forming range. Further, the nozzles can be provided with an appropriate number and arrangement pitch according to the configuration of the ejection mechanism, the recording pixel pitch, and the like. For example, a large number of nozzles such as 256 can be arranged. For example, the recording head 9 may use a piezoelectric element as a recording element, or may be a recording head using a heater as a recording element.

The position control and speed control of the motor 6 are performed according to the control signal of the control means. During the recording operation, the motor 6 is controlled so that the recording head 9 reciprocates on the recording medium 50 at a predetermined speed. Further, the motor 6 can move the recording head 9 to a predetermined wiping position of the wipe unit 10 during the cleaning operation.

The wipe unit 10 wipes the nozzle surface of the recording head 9 in this embodiment. Further, the capping unit 12 performs suction cleaning for cleaning the recording head 9 by sucking the ink of the recording head 9 from the nozzles to the outside. Also, the ink is prevented from drying by capping when not in use. The schematic configuration of the capping unit 12 includes a cap 11, a cap driving unit (not shown), a suction pump 13, a pump driving unit (not shown), an air release valve (not shown), and an air release valve drive unit (not shown). .

Of these, at least a cap 11 is provided for each recording head 9. However, the cap driving unit, the suction pump 13, the air release valve, and the air release valve drive unit may be provided for each of the plurality of caps 11 when each operation can be made common for each recording head 9. .

The cap drive unit moves up and down to selectively switch the position of the cap 11 in the vertical direction, and includes, for example, appropriate mechanical, electromagnetic, and fluid lifting means. Therefore, the cap drive unit moves the cap 11 up and down with respect to the recording head 9 which is moved on the carriage rail 7 by the motor 6 and positioned above the capping unit 12. The state in which the nozzle surface is sealed and the state in which the sealing is released can be switched.

The suction pump 13 is for sucking contents such as air and ink in the suction space and discharging them to the outside of the suction space, and an appropriately configured fluid pump such as a rotary pump can be adopted. A liquid passing means for passing ink from the ink cartridge 14 to the recording head 9 and a suction pump 13 are used here. The suction pump 13 has a suction port connected to the suction tube and a discharge port connected to the discharge tube. The other end of the discharge pipe is connected to a waste liquid bottle (not shown).

The wipe unit 10 wipes and cleans the nozzle surface of the recording head 9 by moving the wipe blade relative to the nozzle surface of the recording head 9 while the recording head 9 is moved above the wipe unit 10. To do.

FIG. 2 is a block diagram of the ink jet printer.

The control unit 20 is a control unit including a CPU that executes processing operations such as calculation, control, determination, and setting. The control means 20 operates according to a control program stored in the ROM 21. The RAM 22 is used as a recording data buffer, a work area for processing by the control means 20, and the like. The carriage movement motor drive circuit 23 operates under the control of the control means 20 and drives the motor 6 that moves the carriage 8 on which the recording head 9 is mounted. The carriage position detection sensor 24 is a linear sensor that detects the scale of a linear scale arranged along the carriage rail 7 that guides the movement of the carriage 8. Based on the sensor output, the controller 20 calculates and acquires the position of the carriage 8. The head drive circuit 25 is controlled by the control means 20. The inkjet head 9 is operated via the head drive circuit 25. When a plurality of inkjet heads 9 are mounted, the control unit 20 and the head drive circuit 25 can drive each inkjet head 9 individually. The head drive circuit 25 generates ink ejection timing or non-ejection timing for each inkjet head 9 based on information input from the control means 20 and drives the inkjet head 9. When ink ejection is performed, an ON waveform is generated. When ink ejection is not performed, an OFF waveform is generated and transferred to each inkjet head 9. The ejection timing is determined according to the position of the carriage 9 calculated by the control means 20 based on information from the carriage position detection sensor 24.

The recording medium transport unit 26 operates under the control of the control unit 20. The recording medium transport unit 26 includes a transport unit 4 that transports the recording medium. The conveyance roller pair 3 is driven by the motor 5 to convey the recording medium. The wipe blade moving motor drive circuit 27 operates under the control of the control means 20. The wipe blade moving motor drive circuit 27 drives a motor that moves the belt to which the wipe blade is fixed.

The mark detection means 39 is a detection means for detecting a mark described later, and outputs a signal to the control means 20 when a mark is detected. This mark is used to acquire the position of the tail end of a plurality of wipe blades. Thereby, the control means 20 can acquire the position of a specific wipe blade.

The functions of the inkjet printer 1 are controlled by the control means 20. Further, by storing information on wiping operation conditions in the ROM 21 in advance and programming it, a predetermined wiping operation can be performed. Examples of the wiping condition include a moving speed of the wipe blade and the number of times of wiping the nozzle surface.

FIG. 3 is a schematic diagram of the wiping mechanism. A wipe unit 10 for wiping the recording head 9 will be described.

An elastic resin wipe blade 30, a wipe blade 31, and a wipe blade 32 made of a porous member are fixed to the belt 33 using a fixing portion 48. For example, the wipe blade 30 and the wipe blade 31 are made of rubber, and the wipe blade 32 is made of sponge.

The belt 33 rotates in the direction of arrow 47. The wipe blades 30, 31, and 32 fixed to the belt 33 move with the rotation. The wipe blades 30, 31, and 32 are in contact with the recording head 9 so that the tips of the wipe blades 30, 31, and 32 are curved, and are in contact with the nozzle surface. At this time, the cleaning liquid 46 adheres to the nozzle surface. Also, wipe the nozzle surface. A cleaning tank 34 storing a cleaning liquid 46 is disposed below the recording head 9 and the belt 33. The wipe blade 32, the wipe blade 31, and the wipe blade 30 pass through the cleaning tank 34 in this order, and come into contact with the cleaning liquid 46. Further, the cleaning tank 34 is provided with cleaning

members

36 and 37 that come into contact with the wipe blades 30, 31, and 32 and remove ink and dust adhering to the wipe blades 30, 31, and 32. Can be dropped. The

cleaning members

36 and 37 are porous members such as sponges. The

cleaning members

36 and 37 are immersed in the cleaning liquid 46 and move while the wipe blades 30, 31, and 32 are in contact with each other, thereby cleaning the dust attached to the wipe blades 30, 31, and 32. . The tips of the wipe blades 30, 31, 32 are curved and move while contacting the

cleaning members

36, 37, thereby removing the attached matter. The wipe blades 30, 31, and 32 are cleaned by the cleaning liquid 46 stored in the cleaning tank 34. In addition, by wiping the nozzle surface with the cleaning liquid 46 adhered, it is easy to remove ink or the like firmly adhered to the nozzle surface.

In order to allow the cleaning liquid to sufficiently adhere to the nozzle surface, the cleaning liquid is adhered to the nozzle surface by the wipe blade 32, and the nozzle attached at a high speed (first speed) so as not to wipe off the cleaning liquid adhered by the subsequent nozzle blades 30 and 31. Move on the surface. By moving the nozzle blades 30 and 31 at a high speed, the nozzle blades 30 and 31 can be moved so as to slide on the nozzle surface without contacting the nozzle surface in a state where there is a cleaning liquid. By controlling the wipe speed in this way, the cleaning liquid can be left on the nozzle surface. When the nozzle blades 30 and 31 are moved in contact with the nozzle surface when moved at a lower speed (second speed) slower than the high speed, the cleaning liquid can be wiped off. In this way, the belt rotation speed is controlled in at least two stages.

The bottle 35 stores a cleaning liquid 46 to be supplied to the cleaning tank 34. The cleaning tank 34 is fixed to a table 38. A belt contact portion 45 is provided in the fixing portion of each wipe blade, and the wipe blades 30, 31, and 32 are arranged perpendicular to the belt 33 by contacting the belt 33. The belt 33 is separated at the curved portion, but the hook that is fixed in contact with the belt 33 is attached to the straight portion.

The belt 33 is wound around the first gear 42, the second gear 43, and the third gear 44. The second gear 43 is connected to a motor driven by the wipe blade moving motor drive circuit 27. The third gear 44 is urged by the spring 41 in the direction of the cleaning tank 34 so that the belt 33 is always stretched and forms the lowest point of the belt 33. As a result, the tips of the wipe blades 30, 31 and 32 can be immersed in the cleaning liquid 46 in the cleaning tank 34. Further, the tips of the wipe blades 30, 31, 32 can be brought into contact with the

cleaning members

36, 37. The first gear 42 and the second gear 43 make the belt 33 facing the nozzle surface and the nozzle surface parallel to each other.

A mark 40 indicating the end is fixed to the fixing portion 48 for fixing the wipe blade 30 to the belt 33, and the mark detection means 39 detects when it passes and outputs it to the control means 20.

The mark detection means 39 can calculate the number of rotations of the belt 33 by detecting the mark 40. Further, since the position of the wipe blade 30 can be known by detecting the mark 40, for example, when the mark 40 is detected when stopping the belt 33, the wipe blade 32 is programmed to stop. It arrange | positions so that it may stop between the cleaning

members

36 and 37 of the tank 34. FIG. By doing so, the wipe blade 32 of the porous member is immersed in the cleaning liquid and is not in contact with the

cleaning members

36 and 37 when stopped, so that it can be stopped without being deformed. At this time, the wipe blade 30 is not in contact with the recording head 9, and the wipe blade 31 is between the wipe blade 30 and the wipe blade 32 and can be in a position not immersed in the cleaning liquid. Since the wipe blades 30 and 31 are in the air after coming into contact with the cleaning tank 34 and the

cleaning members

36 and 37, they can be kept clean and dry.

By using three wipe blades, more cleaning liquid 46 can be supplied to the nozzle surface of the recording head 9 with a porous member, and even with strong dirt that cannot be wiped once with two wipe blades of an elastic member, Since it can wipe off by wiping twice continuously, it is preferable.

Further, the cleaning liquid can be reliably attached to the nozzle surface by the wipe blade 32 of the porous member, and the rotation speed of the belt 33 can be prevented so that the cleaning liquid is not wiped off by the two wipe blades 30 and 31 of the elastic member. By controlling, the cleaning liquid can be reliably attached to the nozzle surface. Further, when not wiped, the cleaning liquid can be accumulated in the wipe blade 32 by immersing the wipe blade 32 of the porous member in the cleaning liquid, so that the cleaning liquid is surely adhered to the nozzle surface at the time of wiping. be able to. If it is dry, there is a possibility that it cannot be reliably accumulated.

FIG. 4 is a flowchart for explaining the operation of the wipe blade. Controlled by the control means 20, the nozzle surface of the recording head 9 is wiped and cleaned by the wipe blades 30, 31 and 32. This operation will be described using a flowchart.

First, when wiping the nozzle surface of the recording head 9 in step S1, first, the carriage 8 is moved to a position where the wipe unit 10, that is, the nozzle surface can come into contact with the wipe blades 30, 31, 32. More preferably, before the carriage 8 is moved, the wipe blades 30, 31, 32 are wetted with the cleaning liquid 46 contained in the cleaning tank 34 before the nozzle surface is wiped off.

The positions of the three wipe blades are determined by rotating the belt 33 and detecting the mark 40 fixed to the fixing portion 48 of the wipe blade 30 by the mark detection means 39, so that the control means 20 grasps the position of each wipe blade. To do. As the mark detection means 39, an optical sensor or a switch that contacts the mark 40 can be used.

Next, in step S2, the nozzle surface of the recording head 9 is wiped by the wipe blades 30, 31, and 32. At this time, the belt 33 is rotated at a high speed faster than the normal wiping operation, that is, the rotation speed of the belt 33 in Step S3, that is, the low speed. Then, the cleaning liquid 46 adheres to the nozzle surface by the wipe blades 30, 31, and 32, but the cleaning liquid 46 that adheres to the nozzle surface becomes a film without removing dirt by rotating it quickly, and on the top The wipe blades 30, 31, and 32 move so as to slide.

Further, it is the nozzle blade 32 made of a porous member that specifically adheres the cleaning liquid 46 to the nozzle surface. Further, the nozzle blades 30 and 31 made of an elastic member also attach the cleaning liquid, but move at a high speed, so that they move without being wiped. The belt 33 is rotated at a high speed of about 3 to 10 rotations, and the cleaning liquid is sufficiently adhered to the nozzle surface. At least two rotation speeds are required. These rotation speeds are obtained in advance through experiments and the values are stored in the ROM 21.

Next, in step S3, a waiting time is preferably set for waiting for the cleaning liquid 46 to soak into the ink or dust adhering to the nozzle surface without doing anything for a time period of preferably 30 seconds to 5 minutes. Then, the belt 33 is rotated at a lower speed than the step S2, that is, at a low speed. Thereby, the ink and dust adhering to the nozzle surface are wiped off by the wipe blades 30 and 31 in particular. At this time, the cleaning liquid 46 can be easily wiped by being sufficiently immersed. Rotate the nozzle surface 3 to 10 times. At this time, the nozzle blade 32 can sufficiently supply the cleaning liquid 46 to the nozzle surface, so that the nozzle surface can be wiped cleanly. Since the nozzle blades 30, 31, and 32 are cleaned cleanly in the cleaning tank 34, there is little possibility that the nozzle surface will become dirty again. Further, since the cleaning liquid 46 is supplied from the bottle 35, the cleaning liquid is not insufficient. The waiting time is obtained in advance by experiments or the like and stored in the ROM 21. Depending on the degree of dirt, different waiting times of several stages may be provided and selected depending on the degree of dirt.

High speed rotation is preferably 1.5 times or more and 3 times or less of low speed rotation. This is to prevent the motor from being driven with a large driving force if the speed difference is excessively large, which increases the size of the device and the size of the inkjet printer. .

In step S4, the number of wipe sequences is counted when the wipe sequences in steps S2 and S3 are performed a plurality of times. Then, in step S5, the count value is compared with a preset number of times, and if the wipe sequence is performed again, the process proceeds to step S1. Otherwise, the process proceeds to step S6.

In step S6, it is determined whether all the recording heads 9 have been cleaned. If not all, the process returns to step S1, and the carriage 8 is moved to a position corresponding to the recording head 9 to be wiped, and wiping is performed. If everything is finished, the process is finished.

The present invention can be used for a printer having an inkjet head.

DESCRIPTION OF SYMBOLS 1 Inkjet printer 2 Platen 3 Conveying roller pair 5 Motor 6 Motor 7 Carriage rail 8 Carriage 9 Recording head 10 Wipe unit 30 Wipe blade 31 Wipe blade 32 Wipe blade 33 Belt 34 Cleaning tank 46 Cleaning liquid 50 Recording medium

Claims

A recording head having a nozzle row composed of a plurality of nozzles for ejecting ink, a carriage mounted with the recording head and moving in the main scanning direction, and moving in a direction intersecting the main scanning direction while moving the recording head A wipe blade for wiping the nozzle surface on which the nozzle is formed, a belt for fixing the wipe blade, a motor for driving the belt, a control means for controlling the driving of the motor, a cleaning tank for storing a cleaning liquid, The belt is rotated by controlling the driving of the motor under the control of the control means, the cleaning liquid is attached to the wipe blade, and the nozzle surface on which the nozzles of the recording head are arranged is wiped. In an inkjet printer that wipes with a blade,
The wipe blade includes a first wipe blade, a second wipe blade, and a third wipe blade, and the first wipe blade and the second wipe blade are elastic members, and the third wipe The blade is a porous member,
When the nozzle surface is wiped with the wipe blade, the control means rotates the belt at a first speed and wipes the nozzle surface with the wipe blade, and then leaves the nozzle surface without wiping for a predetermined time. After that, the belt is rotated at a second speed lower than the first speed, and the nozzle surface is wiped with the wipe blade,
When the belt is rotated at the first speed and the nozzle surface is wiped by the wipe blade, the first wipe blade and the second wipe blade are disposed on the nozzle surface via the cleaning liquid. An inkjet printer having a portion that floats and moves, and at least a portion of the cleaning liquid adhered to the nozzle surface by the third wipe blade remains on the nozzle surface.
Mark detecting means for detecting a mark provided on any one of the wipe blades is further provided, and the control means is configured to detect the rotational speed of the belt and the position of the wipe blade based on a signal from the mark detecting means. The inkjet printer according to claim 1, wherein the belt is rotated a predetermined number of times based on a signal from the mark detection means, and the wipe blade is stopped at a predetermined position.
In the cleaning tank, at least two cleaning members made of a porous member that comes into contact with the wipe blade are arranged apart from each other, and the wipe blade moves along with the movement of the belt, so that the dirt adhered to the wipe blade. The ink jet printer according to claim 1, wherein the ink is dropped into the cleaning tank.
4. The third wipe blade is stopped at a position where the third wipe blade does not contact the cleaning member between the cleaning members when the recording head is not wiped by the wipe blade. The inkjet printer as described in.