JP2019055528A - Wiping device and droplet discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To replace a wiping member as compared with a case where a roll around which a wiping member for wiping a nozzle surface of a droplet ejection head is wound is not removable or is configured to be removable only individually. Obtain a wiping device that can improve workability at the time. SOLUTION: A wiping member 60 for wiping a nozzle surface of a droplet ejection head, a first roll 50 which comes into contact with the wiping member 60 from below and brings the wiping member 60 into contact with the nozzle surface, and a wiping member in the first roll 50. It is arranged between the pair of second rolls 56 and 58 which are arranged on the upstream side and the downstream side in the feeding direction of 60 and come into contact with the wiping member 60 from below, and between the first roll 50 and the pair of second rolls 56 and 58. The wiping device 40 includes a pair of third rolls 52 and 54 that come into contact with the wiping member 60 from above, and a retracting means 70 that simultaneously retracts the pair of third rolls 52 and 54 from the wiping member 60. [Selection diagram] Fig. 3

Description

  The present invention relates to a wiping device and a droplet discharge device.

  A head comprising a web for wiping the nozzle surface of the droplet discharge head, a driving means for running the web, a pressing member for pressing the web against the nozzle surface, and a support member for supporting the pressing member A cleaning device has been proposed in the past (see, for example, Patent Document 1).

JP 2014-40036 A

  The present invention provides a wiping member that has a wiping member that wipes the nozzle surface of the liquid droplet ejection head, as compared with a case in which the roll is configured to be non-removable or configured so that it can only be removed individually. It is an object of the present invention to obtain a wiping device and a droplet discharge device that can improve workability at the time of replacement.

  In order to achieve the above object, a wiping device according to claim 1 of the present invention comprises a wiping member for wiping a nozzle surface of a droplet discharge head, and a contact with the wiping member from below, and the nozzle surface A first roll that contacts the wiping member, a pair of second rolls that are disposed on the upstream side and the downstream side in the feeding direction of the wiping member in the first roll, and that contact the wiping member from below, and the first roll And a pair of third rolls disposed between the pair of second rolls and in contact with the wiping member from above, and a retracting means for simultaneously retracting the pair of third rolls from the wiping member. Yes.

  Moreover, the wiping device according to claim 2 is the wiping device according to claim 1, and includes a housing in which a feeding roll for feeding out the wiping member and a winding roll for winding up the wiping member are accommodated. The retracting means is configured by a detachable member that supports the pair of third rolls and is detachable from the housing.

  Further, the wiping device according to claim 3 is the wiping device according to claim 2, wherein the detachable member is attached to the third roll so that the position of the pair of third rolls can be changed. It has a plurality of possible attachments.

  Further, the wiping device according to claim 4 is the wiping device according to claim 2 or claim 3, wherein the casing has a detecting means for detecting that the detachable member is attached. Yes.

  Further, the wiping device according to claim 5 is the wiping device according to any one of claims 2 to 4, wherein the detachable member is provided on the upper side of the casing or in the casing. It is a lid member provided on one end side in the axial direction of the roll.

  The wiping device according to claim 6 is the wiping device according to claim 1, comprising a housing in which a feeding roll for feeding the wiping member and a winding roll for winding the wiping member are accommodated. The retracting means is constituted by a rotating member that supports the pair of third rolls and is rotatably supported by the casing.

  Further, a wiping device according to a seventh aspect is the wiping device according to the sixth aspect, wherein the housing or the rotating member has a holding means for holding the pair of third rolls at an upper position. doing.

  Further, the wiping device according to claim 8 is the wiping device according to claim 6 or claim 7, wherein the casing is configured such that the pair of third rolls are attached to the wiping member by rotation of the rotating member. It has a detection means for detecting contact.

  A wiping device according to a ninth aspect is the wiping device according to the first aspect, wherein the wiping device includes a housing in which a feeding roll for feeding the wiping member and a take-up roll for winding the wiping member are accommodated. The retracting means is provided on the housing for connecting the axial end portions of the pair of third rolls, and the pair of third rolls so that the connecting member is movable in the vertical direction. And a support member that supports the other end side in the axial direction of the three rolls.

  Further, the wiping device according to claim 10 is the wiping device according to claim 9, wherein the casing is configured such that the pair of third rolls are in contact with the wiping member due to the movement of the connecting member. It has a detecting means for detecting.

  Moreover, the droplet discharge apparatus of Claim 11 which concerns on this invention is a droplet which moves relatively with respect to the wiping apparatus of any one of Claims 1-10, and the said wiping apparatus. A discharge head.

  According to the first aspect of the present invention, when the roll around which the wiping member for wiping the nozzle surface of the droplet discharge head is wound is configured to be non-removable or configured to be removable only individually. In comparison, the workability at the time of replacing the wiping member can be improved.

  According to the invention which concerns on Claim 2, compared with the case where a pair of 3rd roll is provided in the member which cannot be removed from a housing | casing, the workability | operativity at the time of the cleaning or replacement | exchange of a 3rd roll can be improved. .

  According to the invention which concerns on Claim 3, it can respond to the change of the path | route of a wiping member.

  According to the invention which concerns on Claim 4, Claim 8, and Claim 10, forgetting to attach a pair of 3rd roll can be prevented.

  According to the invention which concerns on Claim 5, compared with the case where a pair of 3rd roll is provided in the member only for it, a number of parts can be reduced.

  According to the invention which concerns on Claim 6, the loss of a 3rd roll can be suppressed compared with the case where a pair of 3rd roll is provided in the member which remove | deviates from a housing | casing.

  According to the invention concerning Claim 7, the workability | operativity at the time of the cleaning or replacement | exchange of a 3rd roll can be improved compared with the case where a pair of 3rd roll is not hold | maintained in an upper position.

  According to the ninth aspect of the present invention, the other axial end of the pair of third rolls is supported by the casing, and the connecting member that couples the one axial end of the pair of third rolls cannot move vertically. Compared with the case where it is said, the workability | operativity at the time of the cleaning or replacement | exchange of a 3rd roll can be improved.

  According to the invention which concerns on Claim 11, the fall of image quality can be suppressed compared with the case where the wiping apparatus of any one of Claims 1-10 is not provided.

It is a side view showing the composition of the ink jet recording device concerning this embodiment. It is a perspective view which shows the wiping apparatus which concerns on this embodiment. It is a perspective view which shows the state which opened the front cover of the wiping apparatus which concerns on 1st Embodiment. It is a side view which shows the state which open | released the front cover of the wiping apparatus which concerns on 1st Embodiment. It is a side view which shows the tension roll attached to the front cover of the wiping apparatus which concerns on 1st Embodiment. It is a perspective view which shows the state which opened the upper cover of the wiping apparatus which concerns on 2nd Embodiment. It is a side view which shows the state which open | released the upper cover of the wiping apparatus which concerns on 2nd Embodiment. It is a perspective view which shows the state which lifted the arm member of the wiping apparatus which concerns on 3rd Embodiment. It is a side view which shows the state which lifted the arm member of the wiping apparatus which concerns on 3rd Embodiment. It is a perspective view which shows the state which lifted the connection member of the wiping apparatus which concerns on 4th Embodiment. It is a side view which shows the state which lifted the connection member of the wiping apparatus which concerns on 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For convenience of explanation, an arrow UP appropriately shown in each drawing is an upward direction of the inkjet recording apparatus 10 and the wiping apparatus 40 as an example of a droplet discharge apparatus, an arrow LH is a left direction of the wiping apparatus 40, and an arrow FR is Although it is set as the front direction of the wiping apparatus 40, it is not specifically limited to each direction. Further, in the following, the conveyance direction of the recording paper P as an example of the recording medium is simply referred to as “conveyance direction”, and the upstream side in the conveyance direction and the downstream side in the conveyance direction are simply referred to as “upstream side” and “downstream side”, respectively. There is a case to say.

<Inkjet recording apparatus>
As shown in FIG. 1, the inkjet recording apparatus 10 includes a paper feeding unit 12 that stores recording paper P, an image recording unit 14 that records an image on the recording paper P fed out from the paper feeding unit 12, and an image A transport unit 16 that transports the recording paper P to the recording unit 14 and a paper discharge unit 18 that stores the recording paper P on which an image is recorded by the image recording unit 14 are provided.

  The image recording unit 14 includes an inkjet recording head 20 as an example of a droplet discharge head. The ink jet recording head 20 has a nozzle surface 21 on which a plurality of nozzles (not shown) are formed. The nozzle surface 21 is the maximum width of the recording paper P on which image recording with the ink jet recording apparatus 10 is assumed. Has a recordable area of the same size or more.

  Further, the inkjet recording head 20 is arranged in parallel in the order of yellow (Y), magenta (M), cyan (C), and black (K) from the upstream side with respect to the conveyance direction of the recording paper P. Ink droplets (droplets) are ejected by known means such as a method or a piezoelectric method.

  As the ink, various inks such as water-based ink, oil-based ink, and solvent-based ink can be used. The ink jet recording apparatus 10 includes ink tanks 22Y, 22M, 22C, and 22K that supply ink to the ink jet recording heads 20Y, 20M, 20C, and 20K.

  The ink jet recording head 20 is configured to be movable in the longitudinal direction (the width direction of the recording paper P) by a known moving mechanism such as a rack and pinion or a slide guide. More specifically, the inkjet recording head 20 can be retracted from the image recording unit 14 (on the conveying means 16), and can be moved to a maintenance unit (not shown) disposed next to the image recording unit 14. It is configured.

  On the other hand, a plurality of recording sheets P accommodated in the sheet feeding unit 12 are configured to be picked up one by one by a pickup roller 24 and are conveyed to the image recording unit 14 by a pair of conveying rollers 25. It is configured.

  The conveying means 16 has a conveying belt 30 for causing the printing surface of the recording paper P to face the nozzle surface 21 of the inkjet recording head 20 at a predetermined interval (for example, about 1 mm). The conveying belt 30 is stretched around a driving roller 26 disposed on the downstream side and a driven roller 28 disposed on the upstream side, and is configured to circulate and drive (rotate) in the direction of the arrow A illustrated. .

  In addition, a charging roller 32 that is driven by the conveyor belt 30 is disposed on the driven roller 28 from the surface side of the conveyor belt 30. When the conveying belt 30 is charged (charged) by the charging roller 32, the recording paper P is electrostatically attracted to the conveying belt 30 and conveyed.

  The conveyance belt 30 is not limited to a configuration in which the recording paper P is electrostatically adsorbed and held, and is not static such as friction with the recording paper P or suction or adhesion of the recording paper P. You may be set as the structure hold | maintained by an electroadsorption means. In addition, a plurality of transport roller pairs 35 and a plurality of transport roller pairs 38 are disposed on the downstream side of the transport belt 30.

  A reversing unit 34 is provided below the conveyor belt 30. Therefore, when performing duplex printing, the recording paper P conveyed by the conveyance roller pair 35 is further conveyed by the plurality of conveyance roller pairs 36 of the reversing unit 34 and is sent to the inkjet recording head 20 again. The recording paper P on which the image is recorded is peeled off from the transport belt 30, transported by the transport roller pair 35 and transport roller pair 38, and discharged to the paper discharge unit 18.

  The ink jet recording apparatus 10 includes a head controller (not shown) of the ink jet recording head 20 that determines the ejection timing of the ink droplets and the nozzle to be used according to the image signal and applies a drive signal to the nozzle. And a system control unit 23 as an example of a control unit that controls the operation of the entire inkjet recording apparatus 10.

<Wiping device>
Next, the wiping device 40 for cleaning the nozzle surface 21 of the ink jet recording head 20 in the ink jet recording device 10 configured as described above will be described.

  As shown in FIG. 2, the wiping device 40 includes a web-like wiping member 60 made of a woven fabric such as polyester resin or nylon resin, a feeding roll 42 around which one end of the wiping member 60 is wound, and wiping. The other end side of the member 60 is wound and the wiping member 60 is brought into contact with the nozzle surface 21 with the winding roll 44 that is rotationally driven by a rotational driving force from a feeding motor (not shown). And a support roll 50 as an example of a first roll (which contacts the wiping member 60 from below).

  That is, in the wiping device 40, the rotation shaft 44A of the winding roll 44 is rotationally driven in the feeding direction (arrow direction in the drawing) by the rotation of the feeding motor, whereby the wiping member 60 is supported from the feeding roll 42 to the support roll. It moves (feeds out) at a constant feeding speed (winding speed) toward the winding roll 44 via 50. The rotating shaft 42A of the feeding roll 42 is freely rotatable.

  The wiping device 40 has a pair of second rolls on which the wiping member 60 is wound from the upper side (contacts the wiping member 60 from below) on the upstream side and the downstream side in the feeding direction of the wiping member 60 relative to the support roll 50. As an example, guide rolls 56 and 58 are provided. The wiping device 40 is an example of a pair of third rolls in which the wiping member 60 is wound from below (contacts the wiping member 60 from above) between the support roll 50 and the pair of guide rolls 56 and 58. Tension rolls 52 and 54 are provided.

  Further, the wiping device 40 includes a guide roll 46 around which the wiping member 60 is wound from below (contacts the wiping member 60 from above) on the downstream side of the guide roll 58 in the feeding direction of the wiping member 60. The feeding roll 42, the winding roll 44, and the guide roll 46 are each accommodated in an apparatus main body 62 as an example of a casing, and are rotatably supported by the apparatus main body 62.

  The support structure for the tension rolls 52 and 54 will be described later. As shown in FIG. It is rotatably supported by a substantially “W” -shaped support shaft member 48 in a front view. The guide rolls 46, 56, 58, the tension rolls 52, 54, and the support roll 50 are configured to rotate as the wiping member 60 moves.

  Further, as shown in FIG. 3, a cleaning liquid application nozzle 51 for injecting the cleaning liquid is arranged facing the wiping member 60 stretched between the support roll 50 and the tension roll 52 on the upstream side in the feeding direction. ing. When the cleaning liquid is ejected from the cleaning liquid application nozzle 51, the upstream side in the feeding direction of the wiping member 60 supported by the support roll 50 is configured to be wetted with the cleaning liquid. The cleaning liquid application nozzle 51 is supported by the support shaft member 48.

  Although not shown, a pair of coil springs as an example of an urging means for urging the support roll 50 upward (nozzle surface 21) at both axial ends of the support shaft of the support roll 50. Is provided. That is, the upper end portion of each coil spring is attached to each end portion in the axial direction of the support shaft of the support roll 50, and the lower end portion of each coil spring is attached to the support shaft member 48 that is a part of the apparatus main body 62. Yes.

  Further, the wiping device 40 is configured to be movable up and down in the maintenance unit, and is configured to be immovable in the longitudinal direction of the inkjet recording head 20. Therefore, when wiping the nozzle surface 21 of the inkjet recording head 20, the wiping device 40 is lifted so that the wiping member 60 is in contact with the nozzle surface 21, and in this state, the inkjet recording head 20 is wiped by the wiping device 40. The nozzle surface 21 is wiped by the wiping member 60 by moving in the direction opposite to the feeding direction of the member 60.

  When the inkjet recording head 20 is moved to the maintenance unit, the wiping device 40 is lifted without moving the inkjet recording head 20, and the inkjet recording head is further moved by a known moving mechanism such as a rack and pinion or a slide guide. The nozzle surface 21 may be wiped by moving in the longitudinal direction 20 (width direction of the recording paper P).

<First Embodiment>
Next, in the wiping device 40 configured as described above, a first embodiment of a retracting means 70 that retracts the pair of tension rolls 52 and 54 from the wiping member 60 simultaneously will be described. Here, “retreat simultaneously” means that the pair of tension rolls 52 and 54 retreat together in one operation with almost no time difference.

  As shown in FIGS. 2 to 4, the apparatus main body 62 has a bottom wall 64, a rear wall 66, and left and right side walls 68. As shown in FIGS. 3 and 4, the front side of the apparatus main body 62 is a front lid 72 that can be opened and closed as an example of a lid member constituting the retracting means 70. The front lid 72 has a rectangular flat plate-like front plate 72A and rectangular flat plate-like side plates 72B integrally formed on the left and right sides of the front plate 72A.

  A cutout 73 having a substantially inverted “U” shape in side view is formed at the lower end of the side plate 72B. And the bolt 69 (shaft part) with which the notch part 73 fits from the upper part is provided in the lower end part of the side wall 68. As shown in FIG. Therefore, the front lid 72 is configured to open and close the front side in the front-rear direction with the bolt 69 as a fulcrum in a state where the notch 73 is fitted to the shaft portion of the bolt 69.

  A closed state of the front lid 72 is maintained by a lock mechanism (not shown) provided on the front lid 72. The front lid 72 can be detached from the apparatus main body 62 by removing the notch 73 from the shaft portion of the bolt 69. Therefore, the front lid 72 is also an example of a detachable member that is detachable from the apparatus main body 62.

  The apparatus main body 62 is provided with detection means 80 for detecting that the front lid 72 is closed (mounted in a closed state). The detection means 80 is electrically connected to a drive circuit of a feeding motor that rotationally drives the winding roll 44, and the wiping device 40 does not detect that the front lid 72 is closed by the detection means 80. The feeding motor is configured not to rotate.

  The detection means 80 is a contact that detects the closed state of the front lid 72 when a contact member provided on the front lid 72 contacts a contacted member provided on the apparatus main body 62 (for example, the side wall 68). A sensor of a type may be used, and a light receiving element provided on the front lid 72 receives light emitted from a light emitting element provided on the apparatus main body 62 (for example, the side wall 68). It may be a non-contact type sensor that detects a closed state.

  The pair of tension rolls 52 and 54 are attached side by side at the center in the left-right direction at the upper end of the front plate 72A. More specifically, as shown in FIG. 5, the tension rolls 52 and 54 include shaft portions 52A and 54A and roll portions 52B and 54B configured to be rotatable with respect to the shaft portions 52A and 54A. In addition, one axial end portion of each shaft portion 52A, 54A is attached to the upper end portion of the front plate 72A by a mounting screw 82.

  As shown in FIG. 3, the front plate 72A is formed with a plurality of through holes 72C as an example of attachment portions into which the shaft portion of the attachment screw 82 can be inserted, and a pair of tension rolls 52, 54 are formed. The mounting location of can be changed. In addition, the pair of tension rolls 52 and 54 is configured such that only one axial end portion of each of the shaft portions 52A and 54A is attached to the front plate 72A and is cantilevered by the front plate 72A. Yes.

<Operation of First Embodiment>
Next, the operation of the retracting means 70 according to the first embodiment configured as described above will be described.

  When replacing the wiping member 60, first, the lock mechanism is removed, and the upper portion of the front lid 72 (front plate 72A) is pulled forward with the bolt 69 as a fulcrum. Then, since the pair of tension rolls 52 and 54 are attached to the upper end portion of the front lid 72 (front plate 72A), one pulling operation to the front side of the upper portion of the front lid 72 (front plate 72A) is performed. At the same time, it is pulled out (retracted) to the front side simultaneously (see FIGS. 3 and 4).

  Thereby, since the tension | tensile_strength of the wiping member 60 is reduced, the workability | operativity at the time of replacement | exchange of the wiping member 60 improves. Specifically, in the case of a wiping device (not shown) in which the pair of tension rolls 52 and 54 cannot be removed from the device main body 62 or a wiping device (not shown) that can be removed only from the device main body 62 individually. Compared to the above, the work time for replacing the wiping member 60 is reduced.

  Further, when cleaning or replacing the pair of tension rolls 52 and 54, the notch 73 formed at the lower end of the side plate 72 </ b> B in the front lid 72 is removed from the shaft portion of the bolt 69. That is, the front lid 72 is removed from the apparatus main body 62. Then, the tension rolls 52 and 54 are removed from the front plate 72A in the front lid 72. Here, since each tension roll 52, 54 is only screwed to the front plate 72A as shown in FIG. 5, it can be easily removed from the front plate 72A.

  Further, when the tension rolls 52 and 54 are provided on the front lid 72 that can be attached to and detached from the apparatus main body 62 in this way, the front lid 72 can be taken to a place where it is easy to work. , 54 can be easily cleaned or replaced. Therefore, the workability at the time of cleaning or replacement of the tension rolls 52 and 54 is improved as compared with the case where the pair of tension rolls 52 and 54 is provided on a member that cannot be removed from the apparatus main body 62.

  Actually, the tension roll 54 on the downstream side in the feeding direction of the wiping member 60 is often stained with ink or the like wiped off by the wiping member 60. Therefore, the tension roll 54 is mainly cleaned or replaced. Further, since the tension rolls 52 and 54 are provided on the front lid 72, the number of parts is smaller than when the tension rolls 52 and 54 are provided on a detachable member (not shown) dedicated to the tension rolls 52 and 54 different from the front lid 72. Reduction can be achieved.

  Thus, when the cleaning or replacement of the tension rolls 52 and 54 is completed, the notch 73 formed in the lower end portion of the side plate 72B in the front lid 72 is fitted into the shaft portion of the bolt 69. Then, with the bolt 69 as a fulcrum, the upper part of the front lid 72 (front plate 72A) is pushed back to the rear side, the front side of the apparatus main body 62 is closed with the front lid 72, and the front lid 72 is prevented from opening. Lock by. By this operation, the tension rolls 52 and 54 simultaneously contact the wiping member 60 from above, and tension is applied to the wiping member 60.

  In the present embodiment, as described above, since the tension rolls 52 and 54 can be easily cleaned or replaced, the accuracy of tension control on the wiping member 60 is maintained. The apparatus main body 62 is provided with a detecting means 80 for detecting that the front lid 72 is closed, so that it is possible to prevent the tension rolls 52 and 54 from being forgotten. In other words, the wiping member 60 is not fed out in a state where the tension rolls 52 and 54 are not arranged.

  Further, as described above, since the tension rolls 52 and 54 can be easily replaced, the position thereof can be easily changed. That is, since a plurality of through holes 72C for attaching the tension rolls 52 and 54 are formed in the front plate 72A, it is possible to cope with the case where the path of the wiping member 60 is changed.

  Further, not only the position of the tension rolls 52 and 54 but also the material of the tension rolls 52 and 54 is changed when the material of the wiping member 60 is changed in accordance with the change in the specifications of the ink or the inkjet recording head 20. Even when it is necessary, the tension rolls 52 and 54 suitable for the wiping member 60 can be easily replaced.

Second Embodiment
Next, a second embodiment of the retracting means 70 will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment, and detailed description is abbreviate | omitted suitably. 6 and 7, the illustration of the cleaning liquid application nozzle 51 is omitted.

  As shown in FIGS. 6 and 7, an upper lid 74 as an example of a lid member constituting the retracting means 70 is provided on the upper side of the apparatus main body 62. The upper lid 74 has a rectangular flat plate upper plate 74A, and a rectangular flat plate front plate 74B and a rear plate 74C integrally formed on both front and rear sides of the upper plate 74A, and is substantially reverse in side view. It is formed in a “U” shape. The upper lid 74 is configured to be detachable from the upper portion of the apparatus main body 62. Therefore, the upper lid 74 is also an example of a detachable member.

  A pair of tension rolls 52 and 54 are provided on the upper lid 74. More specifically, each tension roll 52, 54 has one axial end of the shaft 52A, 54A (see FIG. 5) screwed to the front plate 74B and the other axial end fixed to the rear plate 74C. Has been. Accordingly, the pair of tension rolls 52 and 54 are configured to be rotatably supported by the front plate 74B and the rear plate 74C.

  Further, the wiping member 60 wound around and supported by the support roll 50 when the upper lid 74 is put on the portion between the pair of tension rolls 52 and 54 of the upper plate 74A, that is, the apparatus main body 62 in plan view. A rectangular opening 75 is formed in a portion facing the upper and lower direction. The opening 75 allows the wiping member 60 wound around and supported by the support roll 50 to protrude upward (nozzle surface 21) when the apparatus main body 62 is covered with the upper lid 74. Yes.

  The apparatus main body 62 (for example, the rear wall 66) is provided with detection means 80 for detecting that the upper lid 74 has been put on (installed in the closed state). The detection means 80 is the same as described above, and the wiping device 40 is configured so that the feeding motor does not rotate unless the detection means 80 detects that the upper lid 74 is closed.

  The detecting means 80 is a contact type that detects the closed state of the upper lid 74 when a contact member provided on the upper lid 74 comes into contact with a contacted member provided on the apparatus main body 62 (for example, the rear wall 66). Or the light receiving element provided on the upper lid 74 receives light emitted from the light emitting element provided on the apparatus main body 62 (for example, the rear wall 66), whereby the upper lid 74 is closed. It may be a non-contact type sensor or the like that detects

<Operation of Second Embodiment>
Next, the operation of the retracting means 70 according to the second embodiment configured as described above will be described. Note that operations common to the first embodiment are omitted as appropriate.

  When replacing the wiping member 60, the upper lid 74 is removed from the apparatus main body 62. At this time, the upper lid 74 is removed straightly upward in the vertical direction by guide means (not shown). Then, since the pair of tension rolls 52 and 54 are attached to the upper lid 74, the tension rolls 52 and 54 are simultaneously taken out (retracted) upward with one removal operation of the upper lid 74 upward (see FIG. 6). (See FIG. 7).

  Thereby, since the tension | tensile_strength of the wiping member 60 is reduced, the workability | operativity at the time of replacement | exchange of the wiping member 60 improves. Specifically, in the case of a wiping device (not shown) in which the pair of tension rolls 52 and 54 cannot be removed from the device main body 62 or a wiping device (not shown) that can be removed only from the device main body 62 individually. Compared to the above, the work time for replacing the wiping member 60 is reduced.

  Further, when cleaning or replacing the pair of tension rolls 52 and 54, the tension rolls 52 and 54 are removed from the upper lid 74. Here, since each tension roll 52, 54 is only screwed to the front plate 74B and the rear plate 74C, it can be easily detached from the front plate 74B and the rear plate 74C.

  Further, when the tension rolls 52 and 54 are provided on the upper lid 74 that can be attached to and detached from the apparatus main body 62 in this way, the upper lid 74 can be taken to a place where it is easy to work. Can be easily cleaned or replaced. Therefore, the workability at the time of cleaning or replacement of the tension rolls 52 and 54 is improved as compared with the case where the pair of tension rolls 52 and 54 is provided on a member that cannot be removed from the apparatus main body 62.

  Further, since the tension rolls 52 and 54 are provided on the upper lid 74, the number of parts can be reduced as compared with the case where the tension rolls 52 and 54 are provided on a detachable member (not shown) dedicated to the tension rolls 52 and 54 different from the upper lid 74. I can plan.

  When the tension rolls 52 and 54 have been cleaned or replaced in this way, the upper lid 74 is put on the apparatus main body 62. By this operation, the tension rolls 52 and 54 simultaneously contact the wiping member 60 from above, and tension is applied to the wiping member 60. In the present embodiment, as described above, since the tension rolls 52 and 54 can be easily cleaned or replaced, the accuracy of tension control on the wiping member 60 is maintained.

  The apparatus main body 62 is provided with detection means 80 for detecting that the upper lid 74 is put on, so that forgetting to attach the tension rolls 52 and 54 is prevented. In other words, the wiping member 60 is not fed out in a state where the tension rolls 52 and 54 are not arranged.

<Third Embodiment>
Next, a third embodiment of the retracting means 70 will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment or 2nd Embodiment, and detailed description is abbreviate | omitted suitably. 8 and 9, the illustration of the cleaning liquid application nozzle 51 is omitted.

  As shown in FIGS. 8 and 9, a pair of arm members 76 as an example of a rotating member constituting the retracting means 70 are rotatably provided at one (for example, the right side) corner of the upper portion of the apparatus main body 62. It has been.

  More specifically, a tension roll 52 that is upstream of the wiping member 60 in the feeding direction is rotatably supported at the distal ends of the pair of arm members 76. That is, one axial end portion of the shaft portion 52A (see FIG. 5) of the tension roll 52 is screwed to the front end portion of the front (one) arm member 76A, and the other axial end portion is the rear (other) arm member. Screwed to the tip of 76B.

  In addition, a tension roll 54 that is on the downstream side in the feeding direction of the wiping member 60 is rotatably supported in the middle of the pair of arm members 76. That is, one axial end portion of the shaft portion 54A (see FIG. 5) of the tension roll 54 is screwed to the middle portion of the front arm member 76A, and the other axial end portion is screwed to the middle portion of the rear arm member 76B. It has been stopped.

  Further, the base end portion 76C of the front arm member 76A has a certain amount of friction (sliding resistance) as an example of a holding unit on an overhanging portion 68A that is bent from the upper part of the side wall 68 toward the front lid 72 side and integrally projects. ) It is rotatably supported with F. The base end portion 76D of the rear arm member 76B is rotatably supported on the upper portion of the rear wall 66 with a certain amount of friction (sliding resistance) F as an example of a holding unit. By such holding means (friction F), the pair of tension rolls 52 and 54 can be held at their upper positions.

  Further, the corner portion of the front lid 72 facing the overhanging portion 68A in the front-rear direction is cut out in a substantially rectangular shape. That is, a notch 77 having a substantially rectangular shape when viewed from the front is formed at the corner of the front lid 72. With this cutout portion 77, the opening / closing operation of the front lid 72 is not hindered by the arm member 76.

  The apparatus main body 62 is provided with detection means 80 for detecting that the pair of tension rolls 52 and 54 are in contact with the wiping member 60 by the rotation of the arm member 76. In other words, the apparatus main body 62 is provided with detection means 80 that detects the position of the arm member 76 when the pair of tension rolls 52 and 54 are in contact with the wiping member 60.

  The detection means 80 is also the same as described above, and the wiping device 40 is configured such that the pair of tension rolls 52 and 54 are in contact with the wiping member 60 in the detection means 80 (the pair of tension rolls 52 and 54 are in contact with the wiping member 60). If the position of the arm member 76 in this state is not detected, the feeding motor is configured not to rotate.

  As the detecting means 80, the contact member provided on the arm member 76 contacts the contacted member provided on the apparatus main body 62 (for example, the rear wall 66), so that the contact state of the tension rolls 52 and 54. May be a contact type sensor that detects light, or the light receiving element provided on the arm member 76 receives the light emitted from the light emitting element provided on the apparatus main body 62 (for example, the rear wall 66). Further, a non-contact type sensor that detects the contact state of the tension rolls 52 and 54 may be used.

<Operation of Third Embodiment>
Next, the operation of the retracting means 70 according to the third embodiment configured as described above will be described. In addition, about the effect | action common to the said 1st Embodiment or 2nd Embodiment, it abbreviate | omits suitably.

  When the wiping member 60 is replaced, the arm member 76 is rotated upward with the base end portions 76C and 76D of the arm member 76 as fulcrums. Then, since the pair of tension rolls 52 and 54 are attached to the distal end portion and the midway portion of the arm member 76, the pair of tension rolls 52 and 54 are simultaneously lifted (retracted) upward along with the one rotation operation (see FIG. 8, see FIG.

  The pair of tension rolls 52 and 54 are held at their upper positions by the friction (sliding resistance) F applied to the base end portions 76C and 76D of the arm member 76. Thus, since the tension of the wiping member 60 is reduced by simultaneously retracting the pair of tension rolls 52 and 54 from the wiping member 60, workability at the time of replacing the wiping member 60 is improved.

  Specifically, in the case of a wiping device (not shown) in which the pair of tension rolls 52 and 54 remain in contact with the wiping member 60 and cannot be removed, or in contact with the wiping member 60 individually. Compared to the case of a wiping device (not shown) that cannot be removed, the work time for replacing the wiping member 60 is reduced.

  In addition, since the pair of tension rolls 52 and 54 are provided on the arm member 76 that is rotatably supported by the apparatus main body 62, the pair of tension rolls 52 and 54 are provided on a member that is detached from the apparatus main body 62. The loss of each tension roll 52, 54 is suppressed or prevented as compared with the case where the tension rolls are provided.

  Further, when cleaning or replacing the pair of tension rolls 52, 54, the tension rolls 52, 54 are removed from the arm member 76 held at the upper position by the holding means (friction F). Here, since the tension rolls 52 and 54 are only screwed to the arm member 76, the tension rolls 52 and 54 can be easily detached from the arm member 76. Accordingly, the tension rolls 52 and 54 can be easily cleaned or replaced. That is, workability at the time of cleaning or replacement of the tension rolls 52 and 54 is improved.

  Thus, when the cleaning or replacement of the tension rolls 52 and 54 is completed, the arm member 76 is rotated downward. Thereby, the tension rolls 52 and 54 contact the wiping member 60 from above, and the wiping member 60 is tensioned. In the present embodiment, as described above, since the tension rolls 52 and 54 can be easily cleaned or replaced, the accuracy of tension control on the wiping member 60 is maintained.

  The apparatus main body 62 detects that the pair of tension rolls 52 and 54 are in contact with the wiping member 60 (the position of the arm member 76 when the pair of tension rolls 52 and 54 are in contact with the wiping member 60). Since the detecting means 80 is provided, forgetting to attach the tension rolls 52 and 54 is prevented. In other words, the wiping member 60 is not fed out in a state where the tension rolls 52 and 54 are not arranged.

<Fourth embodiment>
Finally, a fourth embodiment of the retracting means 70 will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment-3rd Embodiment, and detailed description is abbreviate | omitted suitably. 10 and 11, the cleaning liquid application nozzle 51 is not shown.

  As shown in FIGS. 10 and 11, the shaft portion 52 </ b> A and the shaft portion 54 </ b> A are connected to the shaft portion 52 </ b> A and 54 </ b> A (see FIG. 5) at one end side in the axial direction. A member 78 is provided. The connecting member 78 constituting the retracting means 70 is formed in a rectangular flat plate shape whose longitudinal direction is the left-right direction. A rectangular flat plate-like projecting portion 78 </ b> A projecting upward is integrally formed at the central portion in the longitudinal direction of the connecting member 78 so as to be gripped with fingers or the like.

  When the tension is applied by bringing the pair of tension rolls 52 and 54 into contact with the wiping member 60, the connecting member 78 is arranged on the front side of the support shaft member 48. Further, the support shaft member 48 has a substantially U-shaped bearing portion 48A (front view) for receiving and supporting the shaft portions 52A, 54A on one end side in the axial direction of the tension rolls 52, 54 as necessary. You may make it form (refer FIG. 10).

  Further, the other axial end portions of the shaft portions 52A and 54A of the pair of tension rolls 52 and 54 are supported by the support shaft member 48 via a ball joint 84 (see FIG. 11) as an example of a support member. Thereby, it is a structure in which the axial movement of the shaft portions 52A and 54A of the pair of tension rolls 52 and 54, that is, the movement of the connecting member 78 in the vertical direction (up and down operation) is allowed.

  Further, the connecting member 78 is disposed on the front side of the supporting shaft member 48 on the front surface of the supporting shaft member 48 which is a part of the apparatus main body 62 (the pair of tensions are moved by the downward movement of the connecting member 78). Detection means 80 is provided for detecting that the rolls 52 and 54 are in contact with the wiping member 60.

  The detection means 80 is also the same as described above, and the wiping device 40 is configured such that the pair of tension rolls 52 and 54 are in contact with the wiping member 60 in the detection means 80 (the pair of tension rolls 52 and 54 are in contact with the wiping member 60). If the position of the connecting member 78 in this state is not detected, the feeding motor is configured not to rotate.

  The detection means 80 is a contact type that detects the contact state of each tension roll 52, 54 by contacting a contact member provided on the support shaft member 48 with a contact member provided on the connecting member 78. The light receiving element provided on the connecting member 78 receives the light emitted from the light emitting element provided on the support shaft member 48, so that the contact state of each tension roll 52, 54 is achieved. It may be a non-contact type sensor or the like that detects

<Operation of Fourth Embodiment>
Next, the operation of the retracting means 70 according to the fourth embodiment configured as described above will be described. In addition, about the effect | action common to the said 1st Embodiment-3rd Embodiment, it abbreviate | omits suitably.

  When the wiping member 60 is replaced, the protruding portion 78A of the connecting member 78 is gripped with fingers or the like, and the connecting member 78 is lifted upward. Then, since the other axial ends of the shaft portions 52A and 54A are supported by the ball joints 84, the pair of tension rolls 52 and 54 have the ball joints 84 as fulcrums and the shaft portions 52A and 54A. The one end side in the axial direction is simultaneously lifted (retracted) upward (see FIGS. 10 and 11).

  The pair of tension rolls 52 and 54 are held at their upper positions by the sliding resistance of the ball joints 84. Thus, since the tension of the wiping member 60 is reduced by simultaneously retracting the pair of tension rolls 52 and 54 from the wiping member 60, workability at the time of replacing the wiping member 60 is improved.

  Specifically, in the case of a wiping device (not shown) in which the pair of tension rolls 52 and 54 remain in contact with the wiping member 60 and cannot be removed, or in contact with the wiping member 60 individually. Compared to the case of a wiping device (not shown) that cannot be removed, the work time for replacing the wiping member 60 is reduced.

  Further, when cleaning or replacing the pair of tension rolls 52, 54, the tension rolls 52, 54 are removed from each ball joint 84. Accordingly, the tension rolls 52 and 54 can be easily cleaned or replaced. That is, the tension rolls 52, 54 can be cleaned or removed as compared with the case where the axial ends 52A, 54A of the tension rolls 52, 54 are screwed and the connecting member 78 cannot be moved vertically. Workability at the time of replacement is improved.

  Thus, after cleaning or replacement of the tension rolls 52 and 54 is completed, the other axial end portions of the shaft parts 52A and 54A of the tension rolls 52 and 54 are arranged so that the connecting member 78 is held at the upper position. Are attached to each ball joint 84. Then, the connecting member 78 is lowered and disposed on the front side of the support shaft member 48.

  As a result, the tension rolls 52 and 54 simultaneously contact the wiping member 60 from above, and the wiping member 60 is tensioned. In the present embodiment, as described above, since the tension rolls 52 and 54 can be easily cleaned or replaced, the accuracy of tension control on the wiping member 60 is maintained.

  The support member 48 is provided with detection means 80 for detecting that the connecting member 78 is disposed on the front side, that is, that the pair of tension rolls 52 and 54 are in contact with the wiping member 60. Forgetting to attach the tension rolls 52 and 54 is prevented. In other words, the wiping member 60 is not fed out in a state where the tension rolls 52 and 54 are not arranged.

  As mentioned above, although the wiping apparatus 40 which concerns on this embodiment was demonstrated based on drawing, the wiping apparatus 40 which concerns on this embodiment is not limited to the thing of illustration, and within the range which does not deviate from the summary of this invention. The design can be changed as appropriate. For example, the pair of tension rolls 52 and 54 are simultaneously when retracted from the wiping member 60, but may not be simultaneous when contacting the wiping member 60.

  Moreover, in 3rd Embodiment, the arm member 76 is not limited to the structure provided in the corner | angular part of the apparatus main body 62, For example, you may be set as the structure provided in the rear part of the apparatus main body 62. FIG. In other words, the arm member 76 is not limited to a configuration that rotates in the left-right direction with the front-rear direction as the rotation axis, and may be configured to rotate in the front-rear direction with the left-right direction as the rotation axis.

  Further, in the third embodiment, the holding means for holding the arm member 76 in the upper position is not limited to the one by the friction F applied to the base end portions 76C and 76D. For example, the arm member 76 or the device A stopper mechanism (not shown) provided in the main body 62 may be used.

  The ink jet recording apparatus 10 according to the present embodiment is limited to those used for recording characters and images on the recording paper P, such as a recording apparatus used as an output device such as a copying machine, a printer multifunction peripheral, or a workstation. For example, the present invention can be applied to the production of a color filter for a display which is performed by discharging colored ink onto a polymer film or glass.

  That is, the “recording medium” in the present embodiment includes, in addition to the recording sheet P, for example, a substrate on which an OHP sheet, a wiring pattern, and the like are formed. The “image” in the present embodiment includes not only general images (characters, pictures, photographs, etc.) but also dot patterns (wiring patterns) obtained by landing ink droplets on the recording medium. Is also included.

10 Inkjet recording device (an example of a droplet discharge device)
20 Inkjet recording head (an example of a droplet discharge head)
21 Nozzle surface 40 Wiping device 42 Feeding roll 44 Winding roll 50 Support roll (an example of a first roll)
52 Tension roll (example of third roll)
54 Tension roll (example of third roll)
56 Guide roll (example of second roll)
58 Guide roll (example of second roll)
60 Wiping member 62 Device body (example of housing)
70 Retracting means 72 Front lid (an example of a lid member / an example of a detachable member)
74 Upper lid (example of lid member / example of detachable member)
76 Arm member (example of rotating member)
78 connecting member 80 detecting means 84 ball joint (an example of a supporting member)

Claims (11)

A wiping member for wiping the nozzle surface of the droplet discharge head;
A first roll that comes into contact with the wiping member from below and makes the wiping member contact the nozzle surface;
A pair of second rolls disposed on the upstream side and the downstream side in the feeding direction of the wiping member in the first roll, and in contact with the wiping member from below;
A pair of third rolls disposed between the first roll and the pair of second rolls and contacting the wiping member from above;
Retreating means for retreating the pair of third rolls simultaneously from the wiping member;
Wiping device with. A housing in which a feeding roll for feeding out the wiping member and a winding roll for winding up the wiping member are accommodated;
The retracting means is
The wiping apparatus according to claim 1, comprising a detachable member that supports the pair of third rolls and is detachable from the housing.   The wiping device according to claim 2, wherein the detachable member has a plurality of attachment portions to which the third roll can be attached so that the positions of the pair of third rolls can be changed.   The wiping apparatus according to claim 2, wherein the casing includes a detection unit that detects that the detachable member is attached.   The wiping device according to any one of claims 2 to 4, wherein the detachable member is a lid member provided on the upper side of the casing or on one end side in the axial direction of the feeding roll in the casing. A housing in which a feeding roll for feeding out the wiping member and a winding roll for winding up the wiping member are accommodated;
The retracting means is
The wiping apparatus according to claim 1, comprising a rotating member that supports the pair of third rolls and is rotatably supported by the housing.   The wiping apparatus according to claim 6, wherein the casing or the rotating member includes a holding unit that holds the pair of third rolls at an upper position.   The wiping apparatus according to claim 6 or 7, wherein the casing includes a detecting unit that detects that the pair of third rolls has contacted the wiping member by rotation of the rotating member. A housing in which a feeding roll for feeding out the wiping member and a winding roll for winding up the wiping member are accommodated;
The retracting means is
A connecting member for connecting the axial one end side of the pair of third rolls;
A support member that is provided in the casing and supports the other end side in the axial direction of the pair of third rolls so that the connecting member can move in the vertical direction;
The wiping apparatus of Claim 1 which has these.   The wiping apparatus according to claim 9, wherein the housing includes a detecting unit that detects that the pair of third rolls are in contact with the wiping member due to the movement of the connecting member. A wiping device according to any one of claims 1 to 10,
A droplet discharge head that moves relative to the wiping device;
A droplet discharge device comprising: