JP2019072876A - Liquid jet device and maintenance method of liquid jet device - Google Patents

Abstract

To provide a liquid jet device which can suitably carry out flashing, and a maintenance method of the liquid jet device.SOLUTION: A liquid jet device includes a liquid jet part 14 which can jet a liquid, a first rotary body 112 having a peripheral surface 111 to which a liquid jetted from the liquid jet part 14 can be adhered, a first contact member 135 which collects a first liquid adhered to the peripheral surface 111 by contacting with the peripheral surface 111 while the first rotary body 112 rotates. The device carries out first rotation movement of rotating the first rotary body 112 in a first rotation direction in a state that the peripheral surface 111 and the first contact member 135 are in contact with each other after the liquid jet part 14 performs flashing for jetting the liquid to the peripheral surface 111, and second rotation movement of rotating the first rotary body 112 in a second rotation direction in a state that the peripheral surface 111 and the first contact member 135 are in contact with each other after the first rotation movement is carried out.SELECTED DRAWING: Figure 12

Description

  The present invention relates to, for example, a liquid ejecting apparatus such as an ink jet printer, and a method of maintaining the liquid ejecting apparatus.

  As an example of a liquid ejecting apparatus, there is an inkjet recording apparatus which ejects (sprays) ink (liquid) onto a recording material from a plurality of ejection openings formed in a recording head (liquid ejecting unit) (for example, Patent Document 1) ).

  In such an inkjet recording apparatus, in order to maintain the ink discharge from the recording head in a good state, preliminary discharge (flushing) is performed to discharge the ink regardless of the recording. In the preliminary ejection, the ink is ejected to the polygon roller (rotational body), and the ink attached to the polygon roller is scraped off by the scraping portion (contact member).

JP 2001-162836 A

  When the ink is scraped off by the scraping portion, the ink may be left at a portion where the scraping portion and the polygon roller come in contact with each other. If the remaining ink thickens in the state of being in contact with the scraping portion, the scraping ability of the scraping portion may be reduced, or the rotational operation of the polygon roller may be impeded, and the predischarge may not be performed satisfactorily. was there.

Such a subject is generally common not only to an inkjet recording apparatus provided with a polygon roller but also to a liquid ejecting apparatus provided with a rotating body.
An object of the present invention is to provide a liquid ejecting apparatus capable of performing good flushing and a maintenance method of the liquid ejecting apparatus.

Hereinafter, the means for solving the above-mentioned subject and its operation effect are described.
A liquid ejecting apparatus that solves the above-described problems includes a liquid ejecting unit capable of ejecting a liquid, a rotating body having a circumferential surface to which the liquid injected from the liquid ejecting unit can adhere, and the rotating unit rotates when the rotating body rotates. And a contact member for collecting the liquid adhering to the peripheral surface in contact with the peripheral surface, and the liquid ejecting unit performs flushing for ejecting the liquid toward the peripheral surface and the peripheral surface and A first rotation operation for rotating the rotation body in one direction in a state in which the contact member is in contact, and a state in which the circumferential surface and the contact member are in contact after the first rotation operation is performed And a second rotation operation for rotating the rotating body in the other direction.

FIG. 2 is a side view schematically showing the liquid ejecting apparatus of the first embodiment. FIG. 2 is a top view schematically showing a part of the liquid ejecting apparatus. FIG. 2 is a perspective view of a flushing unit. The perspective view of the 1st mounting part and the 2nd mounting part. The perspective view of the 1st rotation body holder and the 2nd rotation body holder. The perspective view of the 1st rotation body holder and the 2nd rotation body holder. The perspective sectional view of the 1st rotation object holder and the 2nd rotation object holder. The side sectional view of the 1st rotation object holder and the 2nd rotation object holder. The perspective view of a recovery box. Sectional drawing of a collection box. Flow chart of maintenance processing routine. The schematic diagram of the rotation body and contact member at the time of flushing. The schematic diagram of the rotation body and contact member at the time of collection operation. The schematic diagram of the rotation body and contact member at the time of 1st rotation operation. The schematic diagram of a rotation body and a contact member at the time of completion | finish of 1st rotation operation. The schematic diagram of the rotation body and contact member at the time of 2nd rotation operation. The schematic diagram of the rotation body and contact member at the time of 3rd rotation operation. 10 is a flowchart of a maintenance processing routine that is executed by the liquid ejecting apparatus of the second embodiment. The model perspective view of the contact member of a 1st modification.

First Embodiment
Hereinafter, a first embodiment of the liquid ejecting apparatus will be described with reference to the drawings.
As shown in FIG. 1, the liquid ejecting apparatus 11 includes a support 12 that supports the medium ST, and a transport unit 13 that transports the medium ST in the transport direction Y along the surface of the support 12. The liquid ejecting apparatus 11 includes a liquid ejecting unit 14 that ejects a liquid to the medium ST transported to the transporting unit 13, and a heat generating unit 15 and a blower unit 16 for drying the liquid attached to the medium ST.

  The support base 12 is provided long in the width direction X which is a direction intersecting the transport direction Y in the horizontal plane, and supports the medium ST from below in the vertical direction Z. The transport unit 13 includes transport roller pairs 17 and 18 which are separately disposed at positions on the upstream side and the downstream side of the support 12 in the transport direction Y. A guide plate 19 is disposed upstream of the transport roller pair 17 in the transport direction Y, and a guide plate 20 is disposed downstream of the transport roller pair 18. The transport roller pairs 17 and 18 transport the medium ST along the surfaces of the support 12 and the guide plates 19 and 20 by rotating while nipping the medium ST.

  The liquid ejecting unit 14 is disposed above the support 12 and faces the surface of the support 12. The liquid ejecting unit 14 ejects the liquid to the medium ST supported by the support table 12, and prints an image such as a character or a photograph on the medium ST. In the present embodiment, the medium ST is made of, for example, a sheet, and is conveyed in a continuous sheet state by being unwound from the roll sheet RS wound in a roll state on the supply reel 21. After the medium ST is printed by the liquid ejecting unit 14, the medium ST is rolled up again by the winding reel 22.

  The liquid ejecting apparatus 11 has guide shafts 23 and 24 extending in the width direction X of the medium ST. The liquid ejecting unit 14 has a carriage 25 supported by the guide shafts 23 and 24. The carriage 25 is reciprocally movable in the width direction X by a drive source (not shown). The liquid ejecting unit 14 includes a first liquid ejecting head 26 and a second liquid ejecting head 27 that eject liquids having different properties. The first liquid jet head 26 is configured to be capable of jetting the first liquid, and the second liquid jet head 27 is configured to be capable of jetting the second liquid that is a liquid different from the first liquid. In the present embodiment, the first liquid is a processing liquid that promotes fixing of the second liquid to the medium ST. In the present embodiment, the second liquid is, for example, an aqueous ink containing water as a solvent. That is, the first liquid promotes the fixing of the second liquid to the medium ST by being attached to the medium ST before the second liquid.

  The first and second liquid jet heads 26 and 27 are mounted on the carriage 25 so as to face the support 12, and the lower surface facing the support 12 is a nozzle forming surface 28 and 29. The first and second liquid jet heads 26 and 27 are arranged so as to be offset from each other in the transport direction Y. In the present embodiment, the first liquid jet head 26 is disposed closer to the upstream side than the second liquid jet head 27 in the transport direction Y. That is, the first liquid jet head 26 is disposed to be able to jet the liquid earlier than the second liquid jet head 27 with respect to the medium ST conveyed from the upstream side in the conveyance direction Y.

  The liquid ejecting unit 14 includes a reservoir 30 that stores first and second liquids to be supplied to the first and second liquid ejecting heads 26 and 27. The liquid ejecting unit 14 includes a connection tube 32 that supplies the first and second liquids to the storage unit 30 via the flow path adapter 31. The storage unit 30 is provided for each type of liquid that the liquid ejecting unit 14 ejects, and in the present embodiment, two or more storage units 30 are provided to correspond to at least the first and second liquids. The storage unit 30 is held by a holder 33 attached to the carriage 25. The flow path adapter 31 is connected to the downstream end of the connection tube 32. The upstream end of the connection tube 32 is connected to the downstream end of the supply tube 35 via a connection 34 provided on the carriage 25. The supply tube 35 is provided so as to be deformable following the movement of the carriage 25. The upstream end of the supply tube 35 is connected to a liquid container (not shown) that contains the liquid.

  The heat generating portion 15 is disposed to face the support 12 with the liquid ejecting portion 14 in between in the vertical direction Z. The heat generating portion 15 is provided long in the width direction X so as to correspond to the support 12. The heat generating portion 15 includes a heat generating body 36 and a reflection plate 37. The heating element 36 is, for example, an infrared heater and generates heat by infrared light. The heat generating unit 15 heats the medium ST supported by the support base 12 as indicated by a dashed-dotted arrow in FIG. 1 by the infrared rays radiated from the heat generating body 36 and the radiant heat reflected by the reflection plate 37. Thus, the heat generating unit 15 promotes the drying of the liquid adhering to the medium ST. The carriage 25 has a blocking member 38 on its upper surface for blocking the heat from the heat generating portion 15. The blocking member 38 is made of, for example, a metal material such as stainless steel or aluminum. The blower unit 16 includes a blower fan 39 for blowing air toward the medium ST supported by the support 12. The blower 16 diffuses the liquid vaporized by the heat generator 15 to promote the drying of the liquid.

  The liquid ejecting apparatus 11 includes a control unit 40 that generally controls driving of components included in the liquid ejecting apparatus 11. The control unit 40 includes a memory (not shown) storing a program used to control these components, and executes various processes by executing the program stored in the memory.

  As shown in FIG. 2, the first and second liquid jet heads 26 and 27 are disposed so as to be mutually offset so as to partially overlap each other in the transport direction Y, and disposed so as not to overlap each other in the width direction X ing. In other words, the first and second liquid jet heads 26 and 27 are disposed so as to partially overlap each other when viewed in the width direction X, and do not overlap each other when viewed in the transport direction Y Are arranged. The nozzle formation surface 28 of the first liquid jet head 26 is formed with a first nozzle group 41 for jetting the first liquid. The nozzle formation surface 29 of the second liquid jet head 27 is formed with a second nozzle group 42 that jets the second liquid. The liquid ejecting unit 14 has the first nozzle group 41 and the second nozzle group 42 shifted in the transport direction Y. That is, when viewed in the width direction X, the first nozzle group 41 is arranged to be shifted with respect to the second nozzle group 42.

  The first and second nozzle groups 41 and 42 are configured by a plurality of nozzle rows 43. In the present embodiment, the first and second nozzle groups 41 and 42 are configured by a total of eight nozzle rows 43 in which two nozzle rows 43 positioned close to each other in the width direction X are arranged at a constant interval. It is done. The nozzle row 43 is constituted by a large number (for example, 180) of nozzles 44 formed to be aligned at a constant interval in the transport direction Y. That is, the nozzle row 43 is configured to extend in the transport direction Y. The first and second liquid ejecting heads 26 and 27 eject the first and second liquids from the opening of the nozzle 44 by driving of an actuator (not shown).

  The liquid ejecting apparatus 11 includes, over the width direction X, an ejection area PA in which the liquid ejecting unit 14 can eject the liquid to the medium ST supported by the support 12. That is, the ejection area PA is an area where the liquid ejecting unit 14 can eject at least one of the first liquid and the second liquid to the medium ST. In the present embodiment, the ejection area PA corresponds to an area where the medium ST is supported by the support 12 in the width direction X.

  The liquid ejecting apparatus 11 has a maintenance area MA at a position adjacent to the ejection area PA in the width direction X. The maintenance area MA is provided in the liquid ejecting apparatus 11 closer to one end in the width direction X (closer to the end on the right side in FIG. 2). In the liquid ejecting apparatus 11, the ejection area PA is provided from a position adjacent to the maintenance area MA in the width direction X to the other end (an end on the left side in FIG. 2). Therefore, it can be said that the maintenance area MA is an area located outside the injection area PA in the width direction X with respect to the injection area PA. The injection area PA does not have to be provided to the other end in the width direction X, and another area different from the injection area PA and the maintenance area MA may be separately provided at the other end. In this case, the ejection area PA is provided at a position near the center in the width direction X in the liquid ejecting apparatus 11. Therefore, the maintenance area MA is an area located outside the injection area PA.

  In the maintenance area MA, a maintenance unit 45 for maintaining the liquid ejecting unit 14 is provided. The maintenance unit 45 is disposed adjacent to the support 12 in the width direction X, and the liquid ejecting unit 14 is disposed so as to be opposed. The maintenance unit 45 includes a cap unit 50 and a flushing unit 60. The maintenance unit 45 is configured such that the flushing unit 60 and the cap unit 50 are disposed in order from the side closer to the ejection area PA in the width direction X.

  The cap unit 50 has a first cap portion 51 and a second cap portion 52 which can contact the first liquid jet head 26 and the second liquid jet head 27, respectively. The first and second cap portions 51 and 52 are offset in the transport direction Y so as to correspond to the disposition of the first and second liquid jet heads 26 and 27. More specifically, in the present embodiment, the first cap 51 is disposed closer to the injection area PA than the second cap 52 in the width direction X, and closer to the upstream than the second cap 52 in the transport direction Y. Is located in The cap unit 50 has a motor 53 for operating the first and second cap portions 51 and 52. The first and second cap portions 51 and 52 are separated from the first and second liquid jet heads 26 and 27 by the power of the motor 53 and in contact with the first and second liquid jet heads 26 and 27. It is movable between the retracted position.

  The first and second cap portions 51 and 52 each have one suction cap 54 and four moistening caps 55. The suction cap 54 and the moisturizing cap 55 are configured to be capable of capping the nozzle 44. Capping is an operation of forming a closed space surrounding the nozzle 44. The moisture retention cap 55 is configured to be capable of capping two nozzle rows 43 positioned close to each other in the width direction X. That is, the first and second cap portions 51 and 52 can simultaneously cap a total of eight nozzle rows 43 by the four moisture retaining caps 55. The moisturizing cap 55 moisturizes the liquid in the nozzle 44 by capping the nozzle row 43. The position at which the moisturizing cap 55 of the first and second cap portions 51 and 52 cap the first and second liquid jet heads 26 and 27 is the home position of the liquid jet unit 14.

  The suction cap 54 is connected to a suction pump 57 via a suction tube 56. The suction pump 57 is configured of, for example, a tube pump. When the suction pump 57 is driven with the suction cap 54 capping the nozzle 44, the negative pressure applied to the suction cap 54 suctions and discharges the liquid from the nozzle 44. As a result, the thickened liquid, bubbles and the like are discharged from the nozzle 44 together with the liquid, and the nozzle 44 is cleaned. The suction cap 54 in the present embodiment can clean the two nozzle rows 43 located close to each other in the width direction X.

  The flushing unit 60 is configured to be capable of receiving the liquid ejected from the liquid ejecting unit 14 by the flushing. The flushing is an operation in which the liquid ejecting unit 14 ejects a liquid that does not contribute to printing in order to suppress the occurrence of clogging of the nozzle 44 or the like. The liquid ejecting apparatus 11 in the present embodiment checks the ejection state of the liquid ejected from the nozzle 44 when flushing. In the present embodiment, the inspection is performed based on the residual vibration of the diaphragm in the pressure chamber by the drive of the actuator of the first and second liquid jet heads 26 and 27.

  The means and method for detecting the ejection (injection) abnormality of the nozzle 44 and the cause of the ejection abnormality in the liquid ejecting apparatus 11 are limited to the method of detecting and analyzing the vibration pattern of the residual vibration of the diaphragm as described above. I will not. The following is an example of a modification of the method of detecting ejection failure. For example, there is a method of irradiating and reflecting an optical sensor such as a laser directly to the ink meniscus in the nozzle, detecting the vibration state of the meniscus by the light receiving element, and identifying the cause of the clogging from the vibration state. Alternatively, the presence or absence of ejection abnormality is detected using a general optical dropout detection device that detects whether or not the flying droplet has entered the detection range of the sensor. Then, after discharge operation, it is estimated that the discharge abnormality occurred after a predetermined drying time that may cause dot dropout is due to the drying, and the discharge abnormality occurred before the dry time has elapsed. There is a method to estimate that the cause is adhesion of foreign matter or mixture of air bubbles. In addition, a vibration sensor is added to the above-described optical dot dropout detection device, and it is determined whether or not vibration that may cause air bubbles is added before occurrence of discharge abnormality. If such vibration is added, air bubbles are mixed. There is a method to estimate that the cause of the discharge abnormality. Furthermore, the dropout detection means need not be limited to an optical type. For example, a thermal detection type detection device that receives a droplet discharge to detect a temperature change of the thermal detection unit, or an ink droplet may be charged. A detection device that detects a change in the amount of charge of the detection electrode that has been ejected and landed, a capacitance-type detection device that changes when ink droplets pass between the electrodes, and a liquid ejection to the receiving surface of the medium ST or the flushing unit 60 A method may be used in which an inspection pattern formed by ejecting a liquid from the head is detected as image information by a camera or the like. In addition, as a method of detecting the adhesion of paper dust, a method of detecting the state of the nozzle surface as image information by a camera or the like, or scanning of an optical sensor such as a laser near the nozzle surface A method of detecting etc. can be considered.

  The flushing unit 60 has a first receptacle 100, a second receptacle 200, a base 70 supporting the first receptacle 100 and the second receptacle 200, and a recovery box 80. The first receiving portion 100 is configured to be capable of receiving the first liquid ejected from the first liquid ejecting head 26 by flushing. The second receiver 200 is configured to be capable of receiving the second liquid jetted from the second liquid jet head 27 by flushing. The first receiving unit 100 and the second receiving unit 200 correspond to the arrangement of the first nozzle group 41 of the first liquid jet head 26 and the second nozzle group 42 of the second liquid jet head 27 in the transport direction Y. It is arranged at the shifted position. In the present embodiment, the first receiving portion 100 is disposed closer to the side of the injection area PA than the second receiving portion 200 in the width direction X, and is disposed upstream of the second receiving portion 200 in the transport direction Y There is. The first and second receptacles 100 and 200 are connected to a common collection box 80 via the tubes 101 and 201, respectively.

  The first receiving unit 100 includes a first rotating body 112 having a circumferential surface 111 to which the first liquid jetted from the liquid ejecting unit 14 can adhere, and a first rotating body holder 110 on which the first rotating body 112 is mounted. have. The second receiving unit 200 includes a second rotating body 212 having a circumferential surface 211 to which the second liquid jetted from the liquid ejecting unit 14 can adhere, and a second rotating body holder 210 on which the second rotating body 212 is mounted. have. That is, the first pivoting body 112 is disposed closer to the injection area PA side than the second pivoting body 212 in the width direction X. In the present embodiment, the first pivoting body 112 and the second pivoting body 212 are formed of, for example, a belt-like member such as a belt. The first pivoting body 112 and the second pivoting body 212 have a width greater than or equal to the first nozzle group 41 and the second nozzle group 42 in the width direction X, respectively. The first and second receiving parts 100 and 200 are connected to suction tubes 56 and 56 extending from the moisturizing caps 55 and 55 of the first and second cap parts 51 and 52, respectively.

  The first and second rotating body holders 110 and 210 have exposure ports 114 and 214 on the upper surfaces 113 and 213, respectively, for exposing the insides of the first and second rotating body holders 110 and 210. Drive rollers 115 and 215 and driven rollers 116 and 216 are rotatably attached to the first and second rotating body holders 110 and 210, respectively. The driving rollers 115 and 215 and the driven rollers 116 and 216 are disposed in the first and second rotating member holders 110 and 210 so that a part is exposed from the exposure ports 114 and 214 when viewed from above. . The driving rollers 115 and 215 and the driven rollers 116 and 216 are arranged at predetermined intervals in the transport direction Y. The driving rollers 115 and 215 are located downstream of the driven rollers 116 and 216 in the transport direction Y, and are configured of rollers having a larger diameter than the driven rollers 116 and 216.

  The first and second rotating bodies 112 and 212 are bridged over a plurality of rollers including the driving rollers 115 and 215 and the driven rollers 116 and 216, and mounted on the first and second rotating body holders 110 and 210. At this time, parts of the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 are exposed through the exposure ports 114 and 214. That is, in the circumferential surfaces 111 and 211 of the first and second pivoting members 112 and 212, portions exposed from the exposure ports 114 and 214 serve as receiving surfaces 117 and 217 for receiving the first and second liquids. ing. In the present embodiment, the receiving surfaces 117 and 217 extend in a horizontal plane. The first and second rotating bodies 112 and 212 are arranged such that the receiving surfaces 117 and 217 form part of the top surfaces 113 and 213 of the first and second rotating body holders 110 and 210, respectively.

  A driving source 71 for driving the driving rollers 115 and 215 of the first and second receiving units 100 and 200 is attached to the base 70. The driving source 71 drives and rotates the driving rollers 115 and 215 of the first and second receiving units 100 and 200 by the driving force. The driven rollers 116 and 216 are driven to rotate with respect to the driving rotation of the driving rollers 115 and 215 via the first and second rotating bodies 112 and 212. That is, the rotation of the plurality of rollers including the driving rollers 115 and 215 and the driven rollers 116 and 216 causes the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 to move around these rollers. Rotate. The first and second pivoting members 112 and 212 in the present embodiment are provided rotatably in a first pivoting direction Y1 which is an example of one direction and a second pivoting direction Y2 which is an example of the other direction. It is done. The first rotation direction Y1 is a direction in which the receiving surfaces 117 and 217 that receive the liquid move toward the upstream side in the transport direction Y. The second rotation direction Y2 is a direction in which the receiving surfaces 117 and 217 move downstream in the transport direction Y. That is, in the transport direction Y, the first pivoting body 112 is pivoted in a first pivoting direction Y1 moving away from the second pivoting body 212 and in a second pivoting direction Y2 opposite to the first pivoting direction Y1. Move.

  The first rotating body holder 110 has a slit-like first suction port 118 extending in the transport direction Y. The first suction port 118 is disposed closer to the injection area PA than the position where the first rotating body 112 is provided in the first rotating body holder 110. In other words, the first suction port 118 is disposed at a position between the injection area PA and the first rotating body 112 in the width direction X.

  The second rotating body holder 210 has a slit-like second suction port 218 extending in the transport direction Y. The second suction port 218 is disposed closer to the injection area PA than the position where the second rotating body 212 is provided in the second rotating body holder 210. In other words, the second suction port 218 is disposed at a position between the first rotating body 112 and the second rotating body 212 in the width direction X.

  The recovery box 80 has a suction fan 81 for sucking the inside of the recovery box 80 at an end portion on the upstream side in the transport direction Y. That is, the suction fan 81 is driven to exhaust air from the inside of the collection box 80 to the outside of the collection box 80. The tubes 101 and 201 communicate the inside of the collection box 80 with the first and second suction ports 118 and 218 of the first and second rotating body holders 110 and 210, respectively. That is, the first and second suction ports 118 and 218 suck the atmosphere of the space facing the first and second rotating body holders 110 and 210 through the tubes 101 and 201 and the recovery box 80 by the drive of the suction fan 81. Do. In other words, the first and second suction ports 118 and 218 can suction the atmosphere on the side of the liquid ejecting unit 14 on the upper side in the vertical direction Z.

  When the liquid ejecting unit 14 performs flushing, as the first and second liquids are ejected toward the first and second rotating bodies 112 and 212, mist which is a mist of the first and second liquids, respectively. May occur. The first and second suction ports 118 and 218 are openings for sucking the mist of the first and second liquids. The first suction port 118 mainly sucks the mist of the first liquid. The second suction port 218 mainly sucks the mist of the second liquid. Such mists of the first and second liquids are also generated when printing on the medium ST in the ejection area PA. The collection box 80 collects the mists of the first and second liquids sucked from the first and second suction ports 118 and 218 in the collection box 80.

Next, specific configurations of the first receiving unit 100 and the second receiving unit 200 will be described.
As shown in FIGS. 3 and 4, the first and second receiving parts 100 and 200 are integrally attached to the base 70. The base 70 is disposed immediately below the first receiving unit 100. The base 70 includes, in addition to the drive source 71, transmission mechanisms 72 and 73 for transmitting the driving force of the drive source 71. The transmission mechanisms 72 and 73 are composed of a plurality of members such as gears, pulleys, and belts. The transmission mechanisms 72 and 73 are separately provided at positions on both sides of the base 70 in the width direction X. The transmission mechanism 72 positioned closer to the ejection area PA in the width direction X transmits the drive force of the drive source 71 to the drive roller 115 of the first rotating body holder 110. The transmission mechanism 73 located on the side close to the second receiving unit 200 on the opposite side in the width direction X transmits the driving force of the driving source 71 to the driving roller 215 of the second rotating body holder 210. The transmission mechanisms 72 and 73 drive in synchronization with each other. Therefore, when the drive source 71 is driven, the first and second rotating bodies 112 and 212 rotate in synchronization with each other.

  The first receiving unit 100 includes a first mounting unit 150 that makes the first rotating body holder 110 detachable. The second receiving unit 200 includes a second mounting unit 250 that makes the second rotating body holder 210 detachable. The first and second mounting portions 150 and 250 are provided as a frame whose upper side is opened. The first and second mounting portions 150 and 250 have claws 152 and 252 for mounting the first and second rotating body holders 110 and 210 on the side walls 151 and 251 on both sides in the width direction X, respectively. ing. The claws 152, 252 are respectively provided at positions closer to the upstream side and the downstream side in the transport direction Y on the side walls 151, 251 on both sides of the first and second mounting portions 150, 250. That is, in the present embodiment, the first and second mounting portions 150, 250 have a total of four claws 152, 252.

  The first mounting unit 150 includes a first collecting unit 153 that collects the first liquid injected to the first rotating body 112. That is, the first mounting unit 150 is configured to include the first collecting unit 153. The second mounting unit 250 includes a second collection unit 253 configured to collect the second liquid injected to the second rotating body 212. That is, the second mounting unit 250 is configured to include the second collecting unit 253. The first and second collectors 153 and 253 are configured as containers capable of collecting the first and second liquids. The first and second collecting parts 153 and 253 are arranged to be embedded in the bottom walls 154 and 254 of the first and second mounting parts 150 and 250, respectively. The first and second collecting portions 153, 253 have bottom walls 154, so that the collection ports 155, 255 opening upward are along the bottom walls 154, 254 of the first and second mounting portions 150, 250, respectively. It is attached to 254. The first and second collecting portions 153 and 253 are configured such that the edge portions of the collection ports 155 and 255 are the first in a manner of being lowered downward from the bottom walls 154 and 254 of the first and second mounting portions 150 and 250. , And the bottom wall 154, 254 of the second mounting portion 150, 250.

  The first collection portion 153 has a connection portion 156 to which the suction tube 56 extending from the suction cap 54 of the first cap portion 51 is connected. The suction tube 56 extends along the side wall 151 of the first mounting portion 150 on the side where the second receiving portion 200 is located in the width direction X. The second collection portion 253 has a connection portion 256 to which the suction tube 56 extending from the suction cap 54 of the second cap portion 52 is connected. The suction tube 56 extends along the side wall 251 of the second mounting portion 250 on the side where the recovery box 80 is located in the width direction X. The suction tubes 56, 56 have first and second tips through the side walls 151, 251 of the first and second mounting portions 150, 250 and the connection portions 156, 256 of the first and second collecting portions 153, 253, respectively. 2 has been introduced into the collection ports 155, 255 of the collection units 153, 253. That is, the first and second liquids sucked by the suction pumps 57 and 57 of the first and second cap parts 51 and 52 are transferred to the first and second collection parts 153 and 253 via the suction tubes 56 and 56, respectively. Will be collected.

  The first and second mounting portions 150 and 250 have connection ports 157 and 257 for connecting the tubes 101 and 201 extending from the recovery box 80. The connection ports 157, 257 open in the bottom walls 154, 254 of the first and second mounting parts 150, 250. The tubes 101 and 201 are connected to the connection ports 157 and 257 on the lower side, that is, on the side where the base 70 is located. The first and second mounting portions 150, 250 have seals 158, 258 embedded in the bottom walls 154, 254 so as to surround the connection ports 157, 257. The seal members 158 and 258 are made of, for example, an elastic body such as rubber.

Next, the first rotating body holder 110 and the second rotating body holder 210 will be described.
As shown in FIGS. 5 and 6, the first and second rotating body holders 110 and 210 are provided in a box shape. Bosses 122 and 222 engageable with the claws 152 and 252 of the first and second mounting portions 150 and 250 on the side surfaces 121 and 221 on both sides of the first and second rotating member holders 110 and 210 extending in the transport direction Y. Is provided. The bosses 122 and 222 protrude from the side surfaces 121 and 221 in a cylindrical shape, and a total of four bosses 122 and 222 are provided corresponding to the claws 152 and 252 of the first and second mounting portions 150 and 250.

  The first and second rotating body holders 110 and 210 are disposed downstream of the gears 123 and 223 and the upstream gear 124 on the side surfaces 121 and 221 closer to the ejection area PA in the width direction X, And 224. The downstream gears 123 and 223 and the upstream gears 124 and 224 are attached to the side surfaces 121 and 221 at a position closer to the downstream side in the transport direction Y, which coincides with the longitudinal direction. The downstream gears 123 and 223 are gears engaged with the transmission mechanisms 72 and 73 when the first and second rotating body holders 110 and 210 are mounted on the first and second mounting portions 150 and 250, respectively. The upstream gears 124 and 224 are configured to be rotatable in synchronization with the drive rollers 115 and 215. That is, when the first and second rotating body holders 110 and 210 are attached to the first and second mounting portions 150 and 250, the downstream gears 123 and 223 and the upstream gears 124 and 224 transmit the transmission mechanism 72. , 73 are transmitted to the driving rollers 115, 215.

  In the lower surfaces 131 and 231 of the first and second rotating body holders 110 and 210, rectangular discharge ports 132 and 232 are opened. The discharge ports 132 and 232 cylindrically protrude downward from the lower surfaces 131 and 231, and are provided at positions closer to the center in the transport direction Y. The discharge ports 132 and 232 communicate with the exposure ports 114 and 214 through the insides of the first and second rotating body holders 110 and 210. The discharge ports 132 and 232 are the collection ports 155 of the first and second collecting portions 153 and 253 when the first and second rotating body holders 110 and 210 are mounted on the first and second mounting portions 150 and 250, respectively. It is located opposite to 255.

  In the lower surfaces 131 and 231 of the first and second rotating body holders 110 and 210, circular intake ports 133 and 233 are opened. The intake ports 133 and 233 cylindrically protrude downward from the lower surfaces 131 and 231 and are provided at a position closer to the downstream side in the transport direction Y. The intake ports 133 and 233 communicate with the first and second suction ports 118 and 218 through the insides of the first and second rotating body holders 110 and 210, respectively. When the first and second rotating body holders 110 and 210 are mounted on the first and second mounting portions 150 and 250, the tips of the intake ports 133 and 233 are the bottoms of the first and second mounting portions 150 and 250, respectively. Contact the sealing material 158, 258 provided on the wall 154, 254. That is, when the first and second rotating body holders 110 and 210 are mounted on the first and second mounting portions 150 and 250, the intake ports 133 and 233 are connection ports of the first and second mounting portions 150 and 250. It communicates in a sealed state with 157, 257.

  As shown in FIG. 7, the first and second rotating body holders 110 and 210 have storage chambers 134 and 234 in which the exposure ports 114 and 214 and the discharge ports 132 and 232 are opened. The first rotating body holder 110 accommodates the driving roller 115, the driven roller 116, the first rotating body 112, and the first contact member 135 in the accommodation chamber 134. The second rotating body holder 210 accommodates the driving roller 215, the driven roller 216, the second rotating body 212, and the second contact member 235 in the accommodation chamber 234. The first and second contact members 135 and 235 are made of, for example, a plate-like member such as a scraper. The first and second contact members 135 and 235 extend in the vertical direction Z, and the lower portions thereof are held by the first and second rotating body holders 110 and 210 so as to protrude from the discharge ports 132 and 232. . When the first and second rotating member holders 110 and 210 are mounted on the first and second mounting portions 150 and 250, the first and second contact members 135 and 235 have a first lower part as the first and second contact members 135 and 235, respectively. It is positioned to enter the collection ports 155, 255 of the second collection units 153, 253.

  The upper end portions of the first and second contact members 135 and 235 are in contact with the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212, respectively. In the present embodiment, the first and second rotating bodies 112 and 212 bridged over the driving rollers 115 and 215 and the driven rollers 116 and 216 are in contact with each other in a slightly tensioned manner. The first and second contact members 135 and 235 are in the vertical direction Z with the receiving surfaces 117 and 217 exposed from the exposure ports 114 and 214 of the peripheral surfaces 111 and 211 of the first and second rotating bodies 112 and 212, respectively. It is in contact with the opposite scraping surfaces 119, 219. The scraping surfaces 119, 219 extend so as to be inclined relative to the receiving surfaces 117, 217, which are horizontal surfaces. The first and second contact members 135 and 235 slide in contact with the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 when the first and second rotating bodies 112 and 212 rotate.

  Since the first and second contact members 135 and 235 are in sliding contact with the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212, the first and second liquids adhere to the circumferential surfaces 111 and 211 by flushing. In this state, the first and second rotating bodies 112 and 212 rotate to scrape off the first and second liquids attached to the circumferential surfaces 111 and 211. The first and second liquids scraped off and collected by the first and second contact members 135 and 235 flow down the discharge ports 132 and 232 along the first and second contact members 135 and 235, respectively. , And collected by the first and second collecting units 153 and 253 of the second mounting units 150 and 250. That is, the first and second contact members 135 and 235 contact the peripheral surfaces 111 and 211 when the first and second rotating bodies 112 and 212 rotate, and collect the liquid adhering to the peripheral surfaces 111 and 211. . At this time, the first and second rotating members 112 and 212, from which the first and second liquids are scraped, have their peripheral surfaces 111 and 211 formed by the first and second contact members 135 and 235, respectively. (2) It is renewed from the state in which the liquid adheres to the state in which the liquid does not adhere.

  The bottom surfaces 136 and 236 in the storage chambers 134 and 234 are inclined in a funnel shape toward the discharge ports 132 and 232 in the transport direction Y. That is, the liquid dropped from the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 in the storage chambers 134 and 234 flows down the discharge ports 132 and 232 along the bottom surfaces 136 and 236, and the first , And the second collection unit 153, 253. The interiors of the storage chambers 134 and 234 are moisturized by the first and second liquids collected by the first and second collection units 153 and 253.

  As shown in FIG. 8, the first and second rotating body holders 110 and 210 have suction chambers 137 and 237 in which the first and second suction ports 118 and 218 and the suction ports 133 and 233 are opened. The suction chambers 137 and 237 are separate spaces separated from the storage chambers 134 and 234. The first and second rotating body holders 110 and 210 have shielding members 138 and 238 in the suction chambers 137 and 237, respectively. The shielding members 138 and 238 are disposed immediately above the intake ports 133 and 233. As indicated by arrows in FIG. 8, the shielding members 138 and 238 shield the first and second suction ports 118 and 218 so as not to suck gas directly from the downstream side of the transport direction Y. When the shielding members 138 and 238 are not provided, the suction force in the downstream side closer to the air inlets 133 and 233 in the transport direction Y in the first and second suction ports 118 and 218 becomes stronger. That is, the suction force at the first and second suction ports 118 and 218 varies. Therefore, in the liquid ejecting apparatus 11 according to the present embodiment, by providing the shielding members 138 and 238 in the suction chambers 137 and 237, the suction forces at the first and second suction ports 118 and 218 are made uniform.

Next, the collection box 80 will be described.
As shown in FIG. 9 and FIG. 10, the collection box 80 is a surface extending in the transport direction Y coinciding with the longitudinal direction, and the tube 101 is provided on the side 82 closer to the injection area PA in the width direction X. A tubular first connection pipe 83 and a second connection pipe 84 to which 201 is connected are provided. The first and second connection pipes 83 and 84 communicate the inside of the collection box 80 with the outside of the collection box 80. The collection box 80 has a filter cassette 85 that is detachable from the collection box 80. The filter cassette 85 can be inserted into and removed from the collection box 80 from the downstream side in the transport direction Y. The filter cassette 85 has a front plate 87 having a handle 86, a frame 88 extending from the front plate 87, and a first filter material 89 and a second filter material 90 attached to the frame 88. The first and second filter materials 89 and 90 are provided in a bellows shape and are made of the same material. The frame 88 holds the first filter material 89 and the second filter material 90 in this order from the downstream side to the upstream side in the transport direction Y.

  The inside of the collection box 80 is divided into a plurality of spaces by a plurality of partition plates 91 and 92. In the collection box 80, a first compartment 93 in which the first connection pipe 83 is opened, a second compartment 94 in which the second connection pipe 84 is opened, and the first compartment 93 and the second compartment 94 A common room 95 is provided. The common chamber 95 communicates with the suction fan 81. The common chamber 95 is partitioned from the first compartment 93 through the first filter material 89 when the filter cassette 85 is attached to the recovery box 80, and is separated from the second compartment 94 through the second filter material 90. It is divided. That is, the mists of the first and second liquids which are sucked from the first and second suction ports 118 and 218 by the suction fan 81 and guided to the first and second compartments 93 and 94 are indicated by arrows in FIG. As a result, they are captured by the first and second filter materials 89 and 90. The gas sucked from the first and second suction ports 118 and 218 together with the mist is exhausted from the common chamber 95 to the outside of the collection box 80 through the suction fan 81 as shown by the arrows in FIG.

Next, the maintenance method of the liquid ejecting apparatus 11, in particular, the maintenance of the flushing unit 60 will be described.
The control unit 40 executes a maintenance processing routine shown in FIG. 11 when printing is started.

  As shown in FIG. 11, in step S101, the control unit 40 determines whether or not a predetermined amount of first and second liquids have been ejected in conjunction with the flushing. The predetermined amount is an arbitrary amount smaller than the amount with which the first and second liquids attached to the first and second rotating bodies 112 and 212 may adhere to the liquid ejecting unit 14.

  When the first and second liquids of a predetermined amount adhere to the first and second rotating bodies 112 and 212 by flushing (step S101: YES), the control unit 40 executes a collecting operation in step S102. If the amount of the first and second liquids attached to the first and second rotating bodies 112 and 212 is less than the predetermined amount (step S101: NO), the control unit 40 shifts the process to step S103.

  In step S103, the control unit 40 determines whether printing has ended. If the printing has not ended (step S103: NO), the control unit 40 shifts the process to step S101.

  When printing is completed (step S103: YES), the control unit 40 executes the first rotation operation in step S104, executes the second rotation operation in step S105, and performs the third rotation in step S106. Execute the operation and end the maintenance processing routine. In the present embodiment, the control unit 40 performs flushing during printing and performs the first rotation operation, the second rotation operation, and the third rotation operation between the end of printing and the start of the next printing. Perform dynamic action. Therefore, the second rotation operation and the third rotation operation are performed between the end of the first rotation operation and the execution of the next flushing.

Next, the operation of the liquid ejecting apparatus 11 configured as described above will be described.
The liquid ejecting apparatus 11 periodically performs flushing during printing or the like when printing is instructed when the power is turned on, when cleaning is performed by the suction cap 54.

  As shown in FIG. 12, with flushing, the first and second liquid jet heads 26 and 27 are positioned opposite to the first and second pivoting members 112 and 212, respectively. This operation is performed by ejecting the liquid toward the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212. The liquid ejecting unit 14 performs the flushing by ejecting the liquid to the flushing area FA facing the liquid ejecting unit 14 on the peripheral surfaces 111 and 211. When the liquid ejecting unit 14 flushes the first and second rotating bodies 112 and 212, the first and second liquids are attached to the circumferential surfaces 111 and 211 in a state where the rotation is stopped.

  The position where the flushing area FA is located at the time of flushing is taken as the flushing position FP. That is, the flushing position FP is a position that can face the liquid ejecting unit 14 on the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212. At the time of flushing, the flushing area FA and the flushing position FP coincide with each other.

  If the injection amount of the first and second liquids by one flushing is smaller than the predetermined amount, the control unit 40 may execute the collecting operation after performing the flushing a plurality of times. When the injection amount of the first and second liquids by one flushing is equal to or more than the predetermined amount, the control unit 40 executes the collecting operation each time the flushing is performed.

  As shown in FIG. 13, in the collecting operation, the control unit 40 sets the first and second rotating bodies 112 and 212 in a state where the circumferential surfaces 111 and 211 and the first and second contact members 135 and 235 are in contact with each other. , And is pivoted in a first pivoting direction Y1 indicated by a dashed-dotted arrow. At this time, the control unit 40 rotates the first and second rotating bodies 112 and 212 until the flushing area FA passes the first and second contact members 135 and 235. The first and second contact members 135 and 235 catch the first and second liquids adhering to the flushing area FA as the flushing area FA passes through the first and second contact members 135 and 235. Collect.

  In the collecting operation, it is preferable to stop the first rotating body 112 before the flushing area FA reaches the flushing position FP. As a result, the flushing area FA on the circumferential surfaces 111 and 211 can be made different before and after the collecting operation. That is, the flushing area FA changes every time the collecting operation is performed. The collecting operation is preferably performed in a state where the liquid ejecting unit 14 does not face the circumferential surfaces 111 and 211.

  As shown in FIG. 14 to FIG. 17, the control unit 40 continuously executes the first rotation operation, the second rotation operation, and the third rotation operation. It is preferable that the first rotation operation, the second rotation operation, and the third rotation operation are performed in a state where the liquid ejecting unit 14 does not face the circumferential surfaces 111 and 211. After completion of printing, the flushing area FA does not change, and the area facing the liquid ejecting unit 14 at the time of the final flushing is set as the flushing area FA.

  As shown in FIG. 14, the control unit 40 performs the first rotation operation after performing flushing in accordance with printing. In the first rotation operation, in a state in which the circumferential surfaces 111 and 211 and the first and second contact members 135 and 235 are in contact with each other, the first and second rotating bodies 112 and 212 are indicated by dashed dotted arrows in FIG. It is rotated in the movement direction Y1.

  In the first rotation operation, the first and second rotation bodies 112 and 212 are rotated until at least the flushing area FA passes the first and second contact members 135 and 235, and then the control unit 40 performs the first operation. , The rotation of the second rotating body 112, 212 is stopped. In the first pivoting operation, the first and second pivoting members 112 and 212 may be pivoted so that the flushing area FA passes through the first and second contact members 135 and 235 multiple times (for example, three times). . The first and second contact members 135 and 235 collect the first and second liquids remaining on the circumferential surfaces 111 and 211 in such a manner as to scrape the first and second liquids from the circumferential surfaces 111 and 211. At this time, the first and second liquids may remain on the portions where the first and second rotating bodies 112 and 212 and the first and second contact members 135 and 235 contact, due to surface tension.

  As shown in FIG. 15, an area in contact with the first and second contact members 135 and 235 on the circumferential surfaces 111 and 211 at the end of the first rotation operation is taken as a contact area CA. Of the portions of the first and second contact members 135 and 235 in contact with the circumferential surfaces 111 and 211, the end on the drive roller 115 or 215 side is the first end 141, and the end on the driven roller 116 or 216 side is the second end It shall be 142.

  As shown in FIG. 16, the control unit 40 performs a second rotation operation after performing the first rotation operation. In the second rotation operation, in a state in which the circumferential surfaces 111 and 211 and the first and second contact members 135 and 235 are in contact, the first rotation body 112 is in a second rotation direction Y2 indicated by a dashed dotted arrow in FIG. Rotate. Specifically, in the second rotation operation, the first rotation body 112 is moved in the second rotation direction such that the contact area CA moves by a distance longer than the length of the contact area CA in the second rotation direction Y2. Rotate to Y2. Therefore, in the second rotation operation, in the contact area CA, the end on the upstream side (in the present embodiment, the drive rollers 115 and 215 side) in the second rotation direction Y2 is the first and second contact members 135 and 235, respectively. 2) Passes the second end 142 which is the downstream end of the pivoting direction Y2. That is, the contact area CA moves away from the first and second contact members 135 and 235.

  The pivoting amounts of the first and second pivoting bodies 112 and 212 in the second pivoting operation are smaller than the pivoting amounts of the first and second pivoting bodies 112 and 212 in the first pivoting operation. In the second rotation operation, it is preferable to stop the first and second rotation bodies 112 and 212 before the contact area CA reaches the flushing position FP.

  As shown in FIG. 17, after performing the second rotation operation, the control unit 40 executes the third rotation operation. In the third pivoting operation, the first and second pivoting members 112 and 212 are pivoted in the first pivoting direction Y1 in a state where the circumferential surfaces 111 and 211 and the first and second contact members 135 and 235 are in contact. In the third pivoting operation, the first and second pivoting members 112 and 212 are pivoted until the contact area CA passes through the first and second contact members 135 and 235. In the third rotation operation, the contact area CA passes through the first end 141 of the first and second contact members 135 and 235 at the end on the driven roller 116 and 216 side.

  The amount of rotation of the first and second rotating bodies 112 and 212 in the third rotation operation is smaller than the amount of rotation of the first and second rotating bodies 112 and 212 in the first rotation operation, and in the second rotation operation It is larger than the amount of rotation of the first and second rotating bodies 112 and 212. In the third rotation operation, it is preferable to stop the first and second rotation bodies 112 and 212 before the contact area CA reaches the flushing position FP.

  The first and second liquid surfaces remaining on the portions in contact with the peripheral surfaces 111 and 211 of the first and second rotating bodies 112 and 212 by the first rotating operation change the liquid surface shape by the second rotating operation It becomes easy to collect by the 3rd rotation operation. Therefore, the amounts of the first and second liquids remaining on the circumferential surfaces 111 and 211 are in the first rotation direction Y1 after the first and second rotation bodies 112 and 212 are rotated in the second rotation direction Y2. The rotation is reduced as compared with the case where the rotation in the first rotation direction Y1 is continued.

  When the liquid ejecting unit 14 can eject the first liquid and the second liquid having different properties, depending on the type of the liquid, the first and second liquids may chemically react with each other. For example, in the case of the present embodiment, since the first liquid is a processing liquid that promotes the fixing of the second liquid, when the first liquid and the second liquid react, the fixing of the second liquid is performed by the action of the first liquid. Promoted. In this case, when both the first liquid and the second liquid adhere to the circumferential surface of the rotating body that receives the liquid jetted by the flushing, the second liquid is fixed to the circumferential surface of the rotating body. When the liquid is fixed to the peripheral surface of the rotating body, the liquid is deposited on the peripheral surface to cause a malfunction in the rotating operation of the rotating body, and it becomes difficult to perform good flushing. So, in this embodiment, the collection part is provided for every kind of liquid which the liquid injection part 14 injects. That is, when the liquid ejecting unit 14 performs flushing, the first liquid is ejected to the first rotating body 112 and the second liquid is ejected to the second rotating body 212, so the first and second liquids are the first and second liquids. The possibility of mixing on the circumferential surfaces 111 and 211 of the two rotating bodies 112 and 212 is reduced.

According to the above embodiment, the following effects can be obtained.
(1-1) After rotating the first and second rotating bodies 112 and 212 in the first rotating direction Y1 by the first rotating operation, the first and second rotating bodies 112 and 112 by the second rotating operation, 212 is pivoted in the second pivoting direction Y2. Therefore, in the second rotation operation, at least a portion of the liquid remaining in the portion where the first and second rotation members 112 and 212 and the first and second contact members 135 and 235 contact with each other by the first rotation operation is The first and second contact members 135 and 235 can be separated. Therefore, the liquid remaining at the portion where the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 contact the first and second contact members 135 and 235 is the rotation of the first and second rotating bodies 112 and 212. The influence on the movement and the collection of the first and second liquids attached to the circumferential surfaces 111 and 211 can be reduced, and the flushing can be favorably performed.

  (1-2) Since the second rotation operation is performed in a state in which the liquid ejecting unit 14 does not face the circumferential surfaces 111 and 211, the second rotation operation is attached to the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212. It is possible to reduce the possibility that the first and second liquids come into contact with or adhere to the liquid ejecting unit 14 in association with the second rotation operation.

  (1-3) In the first rotation operation, the first and second rotating members 112 and 212 are rotated until the flushing region FA passes the first and second contact members 135 and 235, so that the flushing region is flushed by flushing. The liquid adhering to the FA can be collected by the first and second contact members 135 and 235. In the second rotation operation, the first contact area CA in contact with the first and second contact members 135 and 235 at the end of the first rotation operation is moved by a distance longer than the length of the contact area CA. , The second rotating body 112, 212 is rotated. Therefore, the contact area CA is separated from the first and second contact members 135 and 235, and at least one of the liquid remaining between the first and second rotating bodies 112 and 212 and the first and second contact members 135 and 235. A portion can be separated from the first and second contact members 135, 235.

  (1-4) In the second rotation operation, before the contact area CA in contact with the first and second contact members 135 and 235 at the end of the first rotation operation reaches the flushing position FP, the first and second The rotating bodies 112 and 212 are stopped. Therefore, for example, when the second rotation operation is performed in a state where the liquid ejecting unit 14 faces the circumferential surfaces 111 and 211, or when the liquid ejecting unit 14 is opposed to the circumferential surfaces 111 and 211 after the second pivoting operation. The possibility of the liquid adhering to the contact area CA coming in contact with or adhering to the liquid ejecting section 14 can be reduced.

  (1-5) The contact area CA in which the first and second contact members 135 and 235 are in contact with each other at the end of the first rotation operation is obtained from the first and second contact members 135 and 235 by the second rotation operation. After leaving, they pass through the first and second contact members 135 and 235 by the third rotation operation. Therefore, the liquid separated from the first and second contact members 135 and 235 by the second rotation operation can be collected by the first and second contact members 135 and 235 by the third rotation operation. Therefore, the amount of liquid remaining on the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 can be reduced.

(1-6) A first rotation operation and a second rotation operation are performed between the first flushing and the next flushing. Therefore, it can be suitably adopted as timing to perform the second rotation operation.
Second Embodiment
Next, a second embodiment of the liquid ejecting apparatus will be described with reference to the drawings. In the second embodiment, the timing at which the second pivoting operation is performed after performing the first pivoting operation is different from that in the first embodiment. And since it is substantially the same as a 1st embodiment in other points, the duplicate explanation is omitted by attaching the same numerals about the same composition.

The maintenance processing routine shown in FIG. 18 is executed when printing is started as in the first embodiment.
As shown in FIG. 18, in steps S201 to S204, the control unit 40 executes the same processing as steps S101 to S104 in the maintenance processing routine shown in FIG.

  In step S205, the control unit 40 determines whether a predetermined period has elapsed since the first rotation operation is performed. If the predetermined period has elapsed (step S205: YES), the control unit 40 executes the second rotation operation in step S206, executes the third rotation operation in step S207, and ends the maintenance processing routine. .

  In step S205, when the predetermined period has not elapsed (step S205: NO), in step S208, the control unit 40 determines whether the power off of the liquid ejecting apparatus 11 is instructed. If an instruction to turn off the power is given (step S208: YES), the control unit 40 shifts the process to step S206.

  If the power off has not been instructed (step S208: NO), in step S209, the control unit 40 determines whether the start of the next printing has been instructed. If the start of printing has not been instructed (step S209: NO), the control unit 40 shifts the process to step S205. If an instruction to start printing has been issued (step S209: YES), the control unit 40 shifts the process to step S201.

Next, the operation of the liquid ejecting apparatus 11 will be described.
The second rotation operation is performed after an elapse of a predetermined period after the first rotation operation is performed, or when an instruction to turn off the power is given. That is, when printing is completed, the control unit 40 executes the first rotation operation to collect the liquid adhering to the circumferential surfaces 111 and 211 by the first and second contact members 135 and 235. Thereafter, the control unit 40 stands by for a predetermined period in a state in which the first rotating body 112 is stopped. When an instruction to turn off the power is given during the predetermined period, the control unit 40 executes the second rotation operation and the third rotation operation before turning off the power.

  The liquid remaining in the portion where the peripheral surfaces 111 and 211 contact the first and second contact members 135 and 235 by the first rotation operation evaporates the solvent while waiting and the viscosity increases, and the fluidity Decreases. Therefore, when the second rotation operation is performed after waiting for a predetermined period, the movement with the first and second rotation bodies 112 and 212 is performed as compared to the case where the second rotation operation is performed immediately after the first rotation operation is performed. The amount of first and second liquids increases. That is, the amounts of the first and second liquids remaining between the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212 and the first and second contact members 135 and 235 can be reduced.

  After executing the second rotation operation, the control unit 40 performs the first and second rotation bodies 112 and 212 such that the contact area CA passes through the first and second contact members 135 and 235 by the third rotation operation. Rotate. The first and second liquids whose flowability is reduced are unlikely to be accumulated in the gap formed by the first and second rotating bodies 112 and 212 and the first and second contact members 135 and 235. Therefore, the first and second contact members 135 and 235 collect the first and second liquids attached to the circumferential surfaces 111 and 211 in such a manner as to scrape off the first and second liquids.

According to the second embodiment, the following effects can be obtained in addition to the effects of the first embodiment.
(2-1) The second rotation operation is performed after a predetermined period has elapsed since the first rotation operation is performed. Therefore, the viscosity of the liquid adhering to the circumferential surfaces 111 and 211 is increased, and the second rotation operation can be performed at the timing when the liquid easily moves together with the first and second rotation bodies 112 and 212. Therefore, it can be adopted suitably as timing which performs the 2nd rotation operation.

  (2-2) Since the second pivoting operation is performed when an instruction to turn off the power is given, the first and second pivoting members 112 and 212 and the first and second contact members 135 and 235 are turned off after the power is turned off. It is possible to reduce the possibility of the liquid remaining in the portion in contact with increasing viscosity. Therefore, it can be adopted suitably as timing which performs the 2nd rotation operation.

The above embodiment may be modified as follows. The following modifications may be combined as appropriate.
As shown in FIG. 19, at least one groove 143 extending in the vertical direction Z may be formed in the first and second contact members 135 and 235 (first modification). The groove 143 is preferably formed in at least one of the front surface 144 on the first end 141 side and the back surface (not shown) on the second end 142 side in the first and second contact members 135 and 235. The width of the groove 143 in the width direction X may be formed such that the upper side in contact with the circumferential surfaces 111 and 211 is wider, and the width is smaller as the distance from the circumferential surfaces 111 and 211 is increased. By forming the groove 143, the first and second liquids attached to the circumferential surface 111, 211 can be guided in the direction (downward) away from the circumferential surface 111, 211 by capillary force.

  The liquid ejecting apparatus 11 may execute the second rotation operation when the power is turned on after the first rotation operation is performed and the power is turned off. The liquid ejecting apparatus 11 may not perform the second rotation operation before the power is turned off. The liquid ejecting apparatus 11 may execute the second rotation operation in two times, before the power is turned off and when the power is turned on.

  Since the second rotation operation is performed when the power is turned on, the second rotation operation can be performed together with the initial operation when the power is turned on. Therefore, it can be adopted suitably as timing which performs the 2nd rotation operation. If the power is turned off before the first and second pivoting members 112 and 212 are pivoted in the first pivoting direction Y1 and the second pivoting operation is performed, the circumferential surface if the power is turned on. There is a possibility that the first and second liquids remaining between 111 and 211 and the first and second contact members 135 and 235 may be solidified in a bowl shape. At this time, the first and second pivoting members 112 and 212 separate the solidified material from the first and second contact members 135 and 235 in the second rotational direction Y2 than the first rotational direction Y1 in which the solidified material is peeled off. Easy to rotate. Therefore, by performing the second rotation operation after the power is turned on, it is possible to reduce the possibility that a rotation failure of the first and second rotation bodies 112 and 212 may occur.

  The control unit 40 rotates the first and second rotating bodies 112 and 212 in the second rotation direction Y2 regardless of the operation before the power is turned off, when the power is turned on. Good. At this time, the first and second rotating bodies 112 and 212 are rotated by at least one rotation, and the solidified material solidified on the second end 142 side of the first and second contact members 135 and 235 is captured on the first end 141 side. You may collect it.

  The first rotation direction Y1 may be an example of another direction, and the second rotation direction Y2 may be an example of one direction. The control unit 40 rotates the first rotating body 112 in the second rotating direction Y2 to execute the collecting operation, the first rotating operation, and the third rotating operation, and the first rotating body 112 is subjected to the first operation. The second rotation operation may be performed by rotating in the moving direction Y1. The direction in which the first pivoting body 112 is pivoted in the collecting operation may be different from the direction in which the first pivoting body 112 is pivoted in the first pivoting operation. The direction in which the first rotation body 112 is rotated and the direction in which the second rotation body 212 is rotated may be different.

  When the second pivoting body 212 is pivoted in the second pivoting direction Y 2, the receiving surface 217 of the circumferential surface 211 to which the second liquid is ejected moves toward the downstream side in the transport direction Y. That is, the second pivoting body 212 pivots in a direction away from the first pivoting body 112 in the transport direction Y. In this case, it is possible to reduce the possibility that the mist of the second liquid flows toward the first rotating body 112 due to the flow of gas generated by the rotation of the second rotating body 212.

The first and second rotating bodies 112 and 212 may be configured to rotate so that the circumferential surfaces 111 and 211 move in, for example, the width direction X different from the transport direction Y.
The drive rollers 115, 215 may not have a diameter larger than the driven rollers 116, 216. For example, the drive rollers 115, 215 may have a smaller diameter than the driven rollers 116, 216, or may have the same diameter as the driven rollers 116, 216.

  -A moisturizing liquid for moisturizing the first and second liquids may be supplied to the first and second collecting parts 153 and 253 through the connection parts 156 and 256 of the first and second collecting parts 153 and 253. . According to this, the insides of the storage chambers 134 and 234 of the first and second rotating body holders 110 and 210 are moistened by the moisturizing liquid. Therefore, drying of the first and second liquids attached to the first and second rotating bodies 112 and 212 can be suppressed, and the possibility of the liquid adhering to the circumferential surfaces 111 and 211 due to drying can be further reduced.

  The first and second rotating bodies 112 and 212 may be configured of rotatable rollers as well as belt-like members such as belts. In this case, the rotation axis of the roller is preferably provided to be the same as the direction in which the nozzle row 43 extends. One of the first and second rotating bodies 112 and 212 may be a band member, and the other may be a roller.

  The liquid ejecting apparatus 11 may be configured to include one of the first rotating body 112 and the second rotating body 212. For example, instead of the first rotating body 112 for receiving the first liquid, a receiving member having a receiving surface formed of an absorber may be fixed and used.

  The liquid ejecting apparatus 11 may include a third rotating body in addition to the first rotating body 112 and the second rotating body 212. That is, the liquid ejecting unit 14 may be provided with three or more receiving units capable of receiving the liquid ejected by the flushing corresponding to the type of the liquid ejected.

  The first liquid may be a post-treatment liquid jetted to the medium ST to which the second liquid is jetted. In this case, it is preferable that the first receiving unit 100 having the first pivoting body 112 be positioned more downstream than the second receiving unit 200 having the second pivoting body 212 in the transport direction Y.

  The first rotating body 112 and the second rotating body 212 may be disposed so as to completely overlap in the transport direction Y. The first and second rotating bodies 112 and 212 are preferably arranged to correspond to the arrangement of the first and second liquid jet heads 26 and 27 of the liquid jet unit 14, but are arranged to correspond thereto It does not have to be done.

In the filter cassette 85, the first filter material 89 and the second filter material 90 may be configured to be removable from the frame 88.
The first and second liquid jet heads 26 and 27 may be arranged so as not to overlap each other in the transport direction Y.

The liquid ejecting unit 14 may be configured to include any one of the first and second liquid ejecting heads 26 and 27.
When the flushing by the liquid ejecting unit 14 is performed on the peripheral surfaces 111 and 211 in a state where the rotation of the first and second rotating bodies 112 and 212 is stopped, the rotation of the first and second rotating bodies 112 and 212 thereafter It is desirable that the movement be performed when the liquid ejecting unit 14 is at the position where the flushing is performed, or at a timing when the liquid is not ejected to the medium ST in the ejection area PA.

In the state in which the first and second rotating bodies 112 and 212 are rotated, the first and second liquids may be ejected as flushing from the liquid ejecting unit 14 to the circumferential surfaces 111 and 211.
A drive source may be provided for driving the drive rollers 115 and 215 of the first and second receiving units 100 and 200, respectively. The first and second rotating bodies 112 and 212 may be rotated at different timings.

  The collection operation, the first rotation operation, the second rotation operation, and the third rotation operation may be performed with the liquid ejecting unit 14 facing the peripheral surfaces 111 and 211. The position of the liquid ejecting unit 14 may be different for each operation.

  The surfaces of the first and second contact members 135 and 235 may be subjected to a liquid repellent (water repellent) treatment to repel the first and second liquids. That is, the liquid repellency of the surfaces of the first and second contact members 135 and 235 may be higher than that of the circumferential surfaces 111 and 211 of the first and second rotating bodies 112 and 212. For example, when the liquid repellency of the surfaces of the first and second contact members 135 and 235 is low, the circumferential surfaces 111 and 211 of the first and second rotating members 112 and 212 and the first and second contact members 135, There is a possibility that the liquid moved below the first and second contact members 135 and 235 may be pulled up by the capillary force generated due to the shape of the portion in contact with the portion 235. In that respect, when the liquid repellency of the first and second contact members 135 and 235 is increased, the possibility of the liquid being pulled up is reduced, and the peripheral surfaces 111 and 211 and the first and second contact members 135 and 235 Can increase the size of the droplets remaining in the portion in contact with each other to make the first and second liquids flow more easily. Furthermore, when the first and second pivoting members 112 and 212 are pivoted in the second pivoting direction Y2 by the second pivoting operation, the circumferential surfaces 111 and 211 and the first and second contact members 135 and 235 The first and second liquids remaining in the contact portion can be easily separated from the first and second contact members 135 and 235 as the first and second rotating bodies 112 and 212 rotate.

The liquid ejecting apparatus 11 may perform flushing between the end of the first rotation operation and the execution of the second rotation operation.
The liquid ejecting apparatus 11 may not perform the third rotation operation.

The liquid ejecting apparatus 11 may not perform the collecting operation.
The liquid ejecting apparatus 11 executes the collecting operation which is an example of the first rotating operation during printing, and then executes the second rotating operation without executing the first rotating operation after the end of printing. Good.

  In the third pivoting operation, the first and second pivoting members 112 and 212 may be pivoted so that the contact area CA reaches the flushing position FP. In the third pivoting operation, the first and second pivoting members 112 and 212 may be pivoted such that the contact area CA passes through the flushing position FP. In the third rotation operation, the first and second rotation bodies 112 and 212 may be rotated once or more.

  In the second rotation operation, the first and second rotation bodies 112 and 212 may be rotated so that the contact area CA reaches the flushing position FP. In the second pivoting operation, the first and second pivoting members 112 and 212 may be pivoted such that the contact area CA passes through the flushing position FP. In the second rotation operation, the first and second rotating bodies 112 and 212 may be rotated once or more. In the second rotation operation, the first and second liquids remaining on the second end 142 side of the first and second contact members 135 and 235 at the end of the first rotation operation are referred to as the first and second contact members 135. , 235 may be scraped off at the first end 141 side.

  In the second rotation operation, the first and second rotation bodies 112 and 212 may be rotated such that the contact area CA moves by the length of the contact area CA or less in the second rotation direction Y2. At the end of the second rotation operation, a part of the contact area CA may be located between the first end 141 and the second end 142 of the first and second contact members 135 and 235.

The liquid ejecting apparatus 11 may execute the first rotation operation, the second rotation operation, and the third rotation operation based on the execution instruction from the external device.
In the embodiment, the liquid ejecting apparatus may be a liquid ejecting apparatus that ejects or discharges a liquid other than the ink as the second liquid. In addition, as a state of the liquid discharged as a microdroplet droplet from a liquid injection apparatus, the thing which draws a granular form, teardrop shape, and threadlike tail shall also be included. Further, the liquid referred to here may be any material that can be ejected from the liquid ejecting apparatus. For example, it may be in the state when the substance is in the liquid phase, and high or low viscosity liquids, sols, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melt Should contain a fluid such as). Further, not only liquid as one state of substance but also particles of functional material consisting of solid matter such as pigment and metal particles are considered to be dissolved, dispersed or mixed in a solvent. Representative examples of the liquid include the ink described in the above embodiment, liquid crystal, and the like. Here, the ink includes general aqueous inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks. Specific examples of the liquid ejecting apparatus include, for example, a liquid containing materials such as an electrode material and a coloring material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, a color filter, etc. in the form of dispersion or dissolution. There is a liquid injection device that injects In addition, it may be a liquid ejecting apparatus that ejects a bioorganic substance used for producing a biochip, a liquid ejecting apparatus that is used as a precision pipette and ejects a liquid to be a sample, a textile printing apparatus, a micro dispenser, or the like. Furthermore, a transparent resin liquid such as an ultraviolet curable resin is used to form a liquid ejecting apparatus that injects lubricating oil at precise points, such as watches and cameras, and micro hemispherical lenses (optical lenses) used for optical communication elements and the like. It may be a liquid ejecting apparatus that ejects onto the substrate. In addition, it may be a liquid ejecting apparatus that ejects an etching solution such as acid or alkali to etch a substrate or the like.

In the following, technical ideas and their effects and advantages which are grasped from the above-described embodiment and the modification will be described.
[Thought 1]
A liquid ejecting portion capable of ejecting liquid;
A rotating body having a circumferential surface to which the liquid jetted from the liquid jet unit can adhere;
A contact member that collects the liquid adhering to the circumferential surface by contacting the circumferential surface when the pivoting body pivots;
Equipped with
A first rotation operation for rotating the rotating body in one direction in a state in which the circumferential surface and the contact member are in contact with each other after the liquid ejecting unit performs flushing for ejecting the liquid toward the circumferential surface; ,
A second rotation operation for rotating the rotating body in another direction in a state where the circumferential surface and the contact member are in contact with each other after the first rotation operation is performed;
A liquid ejecting apparatus characterized by performing.

  According to this configuration, after rotating the rotating body in one direction by the first rotating operation, the rotating body is rotated in the other direction by the second rotating operation. Therefore, in the second rotation operation, at least a part of the liquid remaining in the portion where the rotation body and the contact member are in contact can be separated from the contact member by the first rotation operation. Therefore, the influence of the liquid remaining on the portion where the circumferential surface of the pivoting body contacts the contact member on the rotation of the pivoting body and the collection of the liquid adhering to the circumferential surface can be reduced, and the flushing can be favorably performed.

[Thought 2]
The liquid ejecting apparatus according to [Consideration 1], wherein the second rotation operation is performed in a state where the liquid ejecting unit does not face the circumferential surface.

  According to this configuration, the second pivoting operation is performed in a state in which the liquid ejecting unit does not face the circumferential surface, so the liquid attached to the circumferential surface of the pivoting body becomes the liquid ejecting unit along with the second pivoting operation. Can be reduced.

[Thought 3]
The liquid ejecting unit ejects the liquid to a flushing area facing the liquid ejecting unit on the circumferential surface to perform the flushing.
In the first rotation operation, the rotation body is rotated until at least the flushing area passes the contact member,
In the second rotation operation, a contact area in contact with the contact member on the circumferential surface at the end of the first rotation operation is moved by a distance longer than a length of the contact area in the other direction. The liquid ejecting apparatus according to [Thought 1] or [Thought 2], characterized in that the turning body is turned.

  According to this configuration, in the first pivoting operation, the pivoting body is pivoted until the flushing area passes the contact member, so that the liquid adhering to the flushing area can be collected by the flushing by the contacting member. In the second pivoting operation, the pivoting body is pivoted such that the contact area in contact with the contact member at the end of the first pivoting movement is moved by a distance longer than the length of the contact area. Therefore, the contact area can be separated from the contact member, and at least a part of the liquid remaining between the rotating body and the contact member can be separated from the contact member.

[Thought 4]
The liquid ejecting unit ejects the liquid to a flushing area facing the liquid ejecting unit on the circumferential surface to perform the flushing.
In the first rotation operation, the rotation body is rotated until at least the flushing area passes the contact member,
In the second pivoting operation, the pivoting body before a contact area in contact with the contact member on the circumferential surface at the end of the first pivoting operation reaches a flushing position at which the flushing area is positioned at the time of the flushing. The liquid ejecting apparatus according to any one of [Thought 1] to [Thought 3], wherein:

  According to this configuration, in the second rotation operation, the rotation body is stopped before the contact region in contact with the contact member at the end of the first rotation operation reaches the flushing position. Therefore, for example, when the second rotation operation is performed with the liquid ejecting unit facing the circumferential surface, or when the liquid ejecting unit is opposed to the circumferential surface after the second pivoting operation, the liquid adhering to the contact area is It is possible to reduce the possibility of contact or adhesion to the liquid ejecting unit.

[Thought 5]
After the second pivoting operation is performed, a third pivoting operation of pivoting the pivoting body in the one direction is performed in a state where the circumferential surface and the contact member are in contact with each other.
In the third rotation operation, a contact area in contact with the contact member on the circumferential surface at the end of the first rotation operation rotates the rotation body until passing through the contact member. The liquid ejecting apparatus according to any one of [Thought 1] to [Thought 4].

  According to this configuration, the contact region in contact with the contact member at the end of the first rotation operation passes the contact member by the third rotation operation after being separated from the contact member by the second rotation operation. Therefore, the liquid separated from the contact member by the second rotation operation can be collected by the contact member by the third rotation operation. Therefore, the amount of liquid remaining on the circumferential surface of the rotating body can be reduced.

[Thought 6]
The second pivoting operation is performed between the end of the first pivoting operation and the execution of the next flushing. Any one of [Thought 1] to [Thought 5] The liquid injection device described in one.

  According to this configuration, the first rotation operation and the second rotation operation are performed between the first flushing and the next flushing. Therefore, it can be suitably adopted as timing to perform the second rotation operation.

[Thought 7]
The second rotation operation is performed after an elapse of a predetermined period after the first rotation operation is performed. The liquid jet according to any one of [concept 1] to [concept 6]. apparatus.

  According to this configuration, the second rotation operation is performed after a predetermined period has elapsed since the first rotation operation is performed. Therefore, the viscosity of the liquid adhering to the circumferential surface is increased, and the second rotation operation can be performed at the timing when the liquid becomes easy to move along with the rotation body. Therefore, it can be adopted suitably as timing which performs the 2nd rotation operation.

[Thought 8]
The liquid ejecting apparatus according to any one of [Thought 1] to [Thought 7], wherein the second rotation operation is performed when an instruction to turn off the power is given.

  According to this configuration, the second pivoting operation is performed when an instruction to turn off the power is given, so that the possibility of thickening of the liquid remaining in the portion where the pivoting body and the contact member are in contact after turning off the power can be reduced. . Therefore, it can be adopted suitably as timing which performs the 2nd rotation operation.

[Thought 9]
The liquid ejecting apparatus according to any one of [Thought 1] to [Thought 7], wherein the second rotation operation is performed when power is turned on.

  According to this configuration, since the second pivoting operation is performed when the power is turned on, the second pivoting operation can be performed together with the initial operation at the time of power on. Therefore, it can be adopted suitably as timing which performs the 2nd rotation operation.

[Thought 10]
A liquid ejecting portion capable of ejecting liquid;
A rotating body having a circumferential surface to which the liquid jetted from the liquid jet unit can adhere;
A contact member that contacts the circumferential surface when the pivoting body pivots and collects the liquid attached to the circumferential surface;
A maintenance method of a liquid ejecting apparatus including:
A first rotation operation for rotating the rotating body in one direction in a state in which the circumferential surface and the contact member are in contact with each other after flushing by the liquid ejecting unit toward the circumferential surface to eject the liquid When,
A second rotation operation for rotating the rotating body in another direction in a state in which the circumferential surface and the contact member are in contact after the first rotation operation;
A maintenance method of a liquid injection device characterized by performing.

  According to this configuration, the same effect as that of the liquid ejecting apparatus can be obtained.

  DESCRIPTION OF SYMBOLS 11 ... Liquid injection apparatus, 12 ... Support stand, 13 ... Conveying part, 14 ... Liquid injection part, 15 ... Heating part, 16 ... Blowing part, 17 ... Conveying roller pair, 18 ... Conveying roller pair, 19 ... Guide plate, 20 Guide plate 21 Supply reel 22 Take-up reel 23 Guide shaft 24 Guide shaft 25 Carriage 26 First liquid jet head 27 Second liquid jet head 28 Nozzle formation surface , 29: nozzle forming surface, 30: reservoir, 31: flow channel adapter, 32: connection tube, 33: holder, 34: connection, 35: supply tube, 36: heating element, 37: reflection plate, 38: Blocking member 39: air blower fan 40: control unit 41: first nozzle group 42: second nozzle group 43: nozzle row 44: nozzle 45: maintenance unit 50: cap unit 51: first Cap part, 52 2nd cap part, 53: motor, 54: suction cap, 55: moisturizing cap, 56: suction tube, 57: suction pump, 60: flushing unit, 70: base, 71: drive source, 72: transmission mechanism , 73 ... Transmission mechanism, 80 ... Recovery box, 81 ... Suction fan, 82 ... Side, 83 ... First connection pipe, 84 ... Second connection pipe, 85 ... Filter cassette, 86 ... Handle, 87 ... Front plate, 88 ... Frame body 89: first filter material 90: second filter material 91: partition plate 92: partition plate 93: first compartment, 94: second compartment, 95: common chamber, 100: first Receiving part, 101: tube, 110: first rotating body holder, 111: circumferential surface, 112: first rotating body, 113: upper surface, 114: exposure port, 115: driving roller, 116: driven roller, 117: receiving surface, 18: first suction port, 119: scraping surface, 121: side surface, 122: boss, 123: downstream gear, 124: upstream gear, 131: lower surface, 132: outlet, 133: inlet, 134: housing Chamber 135: first contact member 136: bottom surface 137: suction chamber 138: shielding member 141: first end 142: second end 143: groove 144: front surface 150: first mounting portion DESCRIPTION OF SYMBOLS 151 ... Side wall, 152 ... nail | claw, 153 ... 1st collection part, 154 ... Bottom wall, 155 ... Collection port, 156 ... Connection part, 157 ... Connection port, 158 ... Seal material, 200 ... 2nd receiving part, 201 ... Tube , 210: second rotating body holder, 211: circumferential surface, 212: second rotating body, 213: upper surface, 214: exposure port, 215: driving roller, 216: driven roller, 217: receiving surface, 218: second Suction port, 219 ... scraped surface, 2 21: side surface, 222: boss, 223: downstream gear, 224: upstream gear, 231: lower surface, 232: exhaust port, 233: intake port, 234: accommodation chamber, 235: second contact member, 236: bottom surface, 237: suction chamber, 238: shielding member, 250: second mounting portion, 251: side wall, 252: claw, 253: second collecting portion, 254: bottom wall, 255: collecting port, 256: connection portion, 257: connection Reference numeral 258: Seal material, X: width direction, Y: conveyance direction, Z: vertical direction, CA: contact area, FA: flushing area, FP: flushing position, MA: maintenance area, PA: ejection area, RS: roll Paper, ST: Medium, Y1: first rotation direction (an example of one direction), Y2: second rotation direction (an example of another direction).

Claims (10)

A liquid ejecting portion capable of ejecting liquid;
A rotating body having a circumferential surface to which the liquid jetted from the liquid jet unit can adhere;
A contact member that collects the liquid adhering to the circumferential surface by contacting the circumferential surface when the pivoting body pivots;
Equipped with
A first rotation operation for rotating the rotating body in one direction in a state in which the circumferential surface and the contact member are in contact with each other after the liquid ejecting unit performs flushing for ejecting the liquid toward the circumferential surface; ,
A second rotation operation for rotating the rotating body in another direction in a state where the circumferential surface and the contact member are in contact with each other after the first rotation operation is performed;
A liquid ejecting apparatus characterized by performing.   The liquid ejecting apparatus according to claim 1, wherein the second rotation operation is performed in a state where the liquid ejecting unit does not face the circumferential surface. The liquid ejecting unit ejects the liquid to a flushing area facing the liquid ejecting unit on the circumferential surface to perform the flushing.
In the first rotation operation, the rotation body is rotated until at least the flushing area passes the contact member,
In the second rotation operation, a contact area in contact with the contact member on the circumferential surface at the end of the first rotation operation is moved by a distance longer than a length of the contact area in the other direction. The liquid ejecting apparatus according to claim 1, wherein the rotating body is rotated. The liquid ejecting unit ejects the liquid to a flushing area facing the liquid ejecting unit on the circumferential surface to perform the flushing.
In the first rotation operation, the rotation body is rotated until at least the flushing area passes the contact member,
In the second pivoting operation, the pivoting body before a contact area in contact with the contact member on the circumferential surface at the end of the first pivoting operation reaches a flushing position at which the flushing area is positioned at the time of the flushing. The liquid ejecting apparatus according to any one of claims 1 to 3, wherein the liquid ejecting apparatus is stopped. After the second pivoting operation is performed, a third pivoting operation of pivoting the pivoting body in the one direction is performed in a state where the circumferential surface and the contact member are in contact with each other.
In the third rotation operation, a contact area in contact with the contact member on the circumferential surface at the end of the first rotation operation rotates the rotation body until passing through the contact member. The liquid ejecting apparatus according to any one of claims 1 to 4.   6. The method according to claim 1, wherein the second rotation operation is performed between the end of the first rotation operation and the next flushing being performed. The liquid ejection device according to claim 1.   The liquid ejecting apparatus according to any one of claims 1 to 6, wherein the second rotation operation is performed after a predetermined period of time has elapsed after the first rotation operation is performed.   The liquid ejecting apparatus according to any one of claims 1 to 7, wherein the second rotation operation is performed when an instruction to turn off the power is given.   The liquid ejecting apparatus according to any one of claims 1 to 7, wherein the second rotation operation is performed when power is turned on. A liquid ejecting portion capable of ejecting liquid;
A rotating body having a circumferential surface to which the liquid jetted from the liquid jet unit can adhere;
A contact member that contacts the circumferential surface when the pivoting body pivots and collects the liquid attached to the circumferential surface;
A maintenance method of a liquid ejecting apparatus including:
A first rotation operation for rotating the rotating body in one direction in a state in which the circumferential surface and the contact member are in contact with each other after flushing by the liquid ejecting unit toward the circumferential surface to eject the liquid When,
A second rotation operation for rotating the rotating body in another direction in a state in which the circumferential surface and the contact member are in contact after the first rotation operation;
A maintenance method of a liquid injection device characterized by performing.