JP2017222035A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device that can inhibit a cover protecting a tube from wearing.SOLUTION: A recording device 11 includes: a recording head 35 for recording on a medium S using liquid; a tube 20 capable of flexure displacement and supplying the liquid to the recording head 35; a cover 21 covering the tube 20 and flexure-displacing so as to follow the tube 20; a projection part 23 projecting to a position coming into contact with the cover 21; and a friction reduction part 24 for reducing frictional force that is generated due to contact between the cover 21 and the projection part 23.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a recording apparatus such as a printer.

  As an example of a recording apparatus, a rib serving as a buffering portion is provided on another member so that the ink tube that is deflected and displaced as the recording head reciprocates does not collide with the other member, and the ink tube is covered with a sheet-like cover. There is an ink jet printer that is configured so that the cover is in contact with the rib (for example, Patent Document 1).

JP 2013-166328 A

  By the way, when the cover of the ink tube repeatedly slides on the rib, there is a problem that a portion that contacts the rib of the cover is worn. Such a problem is not limited to printers that perform printing by ejecting ink, but is generally common in recording apparatuses in which a cover that protects a tube that bends and displaces may come into contact with other members. .

  The present invention has been made in view of such circumstances, and an object thereof is to provide a recording apparatus that can suppress wear of a cover that protects a tube.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A recording apparatus that solves the above problems includes a recording head that performs recording on a medium using a liquid, a tube that can be deflected to supply liquid to the recording head, a flexible displacement that covers the tube and follows the tube. A cover that protrudes to a position in contact with the cover, and a friction reduction portion that reduces a friction force generated by contact between the cover and the protrusion.

  According to this configuration, the friction reducing portion reduces the frictional force generated by the contact between the cover and the protruding portion, so that the load on the cover accompanying the contact with the protruding portion can be reduced. Therefore, wear of the cover that protects the tube can be suppressed.

  In the recording apparatus, the protruding portion is a rib protruding from a wall surface facing a space where the tube is bent and displaced, and the friction reducing portion is a rotating body provided rotatably on the wall surface.

  According to this configuration, since the friction reducing unit is a rotatable rotating body, the frictional force generated by the contact is smaller than that of the rib which is the fixedly arranged protruding portion by rotating when the cover contacts. Become. Therefore, the load applied to the cover by the contact can be reduced, and the wear of the cover can be suppressed.

  In the recording apparatus, the protruding portion and the friction reducing portion are arranged side by side on a wall surface facing a space where the tube is bent and displaced, and a protruding length from the wall surface is greater than that of the protruding portion. Is longer.

  According to this configuration, since the friction reducing portion has a longer protruding length from the wall surface than the protruding portion, when the cover that covers the tube approaches the wall surface, the friction reducing portion preferentially contacts the cover rather than the protruding portion. To do. For this reason, the frictional force which acts on a cover by contact can be reduced.

  The recording apparatus includes a carriage that reciprocates while holding the recording head, and the carriage has a large-diameter tube having a largest diameter as the plurality of tubes having different diameters, and a diameter larger than that of the large-diameter tube. A small protrusion having a small diameter is connected in parallel, and on the wall facing the space where the tube is deflected and displaced, as the protrusion, a first protrusion that receives a reaction force from the large diameter tube via the cover, and A second projecting portion that receives a reaction force from the small-diameter tube through a cover, and the first projecting portion has a projecting length shorter than that of the second projecting portion.

  According to this configuration, the reaction force acting on the cover sandwiched between the large diameter tube and the first protrusion is reduced by shortening the protrusion length of the first protrusion that receives the reaction force from the large diameter tube via the cover. Can be reduced.

  The recording apparatus includes a carriage that reciprocates while holding the recording head, and the carriage has a large-diameter tube having a largest diameter as the plurality of tubes having different diameters, and a diameter larger than that of the large-diameter tube. A small protrusion having a small diameter is connected in parallel, and on the wall facing the space where the tube is deflected and displaced, as the protrusion, a first protrusion that receives a reaction force from the large diameter tube via the cover, and And a second projecting portion that receives a reaction force from the small-diameter tube via a cover, and the first projecting portion is longer than the second projecting portion in the direction in which the tubes are arranged.

  According to this configuration, it is possible to disperse the reaction force acting on the cover sandwiched between the large-diameter tube and the first projecting portion, thereby suppressing the wear of the cover.

FIG. 3 is a perspective view illustrating an embodiment of a recording apparatus. FIG. 2 is a perspective view schematically showing an internal structure of the recording apparatus in FIG. 1. FIG. 2 is a perspective view illustrating a carriage and a tube included in the recording apparatus of FIG. 1. The front view which shows the protrusion part and friction reduction part with which the recording apparatus of FIG. 1 is provided. FIG. 5 is a bottom view of the image reading apparatus in which the protruding portion and the friction reducing portion of FIG. 4 are protruded. The bottom view of the image reading apparatus which shows the example of a change of a friction reduction part. Sectional drawing which shows the 1st modification of a protrusion part. Sectional drawing which shows the 2nd modification of a protrusion part. The bottom view of the image reading apparatus which shows the 3rd modification of a protrusion part. The bottom view of the image reading apparatus which shows the 4th example of a change of a protrusion part. The bottom view of the image reading apparatus which shows the 5th modification of a protrusion part.

  Hereinafter, an embodiment of a recording apparatus will be described with reference to the drawings. The recording apparatus is, for example, an ink jet printer that performs recording (printing) using ink, which is an example of a liquid, on a medium such as paper.

  As shown in FIG. 1, the recording apparatus 11 is a multifunction device including a recording unit 12 that performs recording on a medium S, and an image reading unit 13 that is arranged on the recording unit 12. The image reading unit 13 is a scanner including an image reading device 14 that reads characters and images recorded on the document P, and a pressing plate 15 that presses the document P. The image reading unit 13 may include a feeding device that automatically feeds the document P toward the image reading device 14 instead of the pressing plate 15.

  The recording unit 12 includes a housing 16 disposed below the image reading unit 13 and a liquid container holding unit 17 attached to the side of the housing 16. In the recording unit 12, assuming that the side on which the recorded medium S is discharged from the housing 16 is the front side, the image reading unit 13 can rotate around the rear side of the recording unit 12. It is connected with.

  As shown in FIG. 2, the liquid container holding unit 17 holds a plurality (four in the present embodiment) of liquid containers 18 that store the liquid. The four liquid containers 18 of the present embodiment each contain different types of liquids (for example, three color inks and black ink). The liquid container 18 may be a cartridge that replenishes liquid by detachment and replacement, or may be a tank that replenishes by injecting liquid.

  An upstream end of a tube 20 for supplying a liquid is connected to the liquid container 18. A plurality of tubes 20 (four in this embodiment) are provided corresponding to the number of liquid containers 18. The four tubes 20 are collected on the front side of the housing 16 and drawn into the housing 16 in a state of being arranged in parallel in the front-rear direction.

  For example, when it is desired to increase the liquid supply amount per unit time of a part of the plurality of tubes 20 such as the tube 20 that supplies black ink than the other tubes 20, the diameter of the tube 20 may be increased. Good. For example, in this embodiment, as the plurality of tubes 20 having different diameters, the large diameter tube 20B having the largest diameter is assigned to the black ink, and the small diameter tube 20C having a smaller diameter than the large diameter tube 20B is assigned to the color ink. . When the direction in which the tubes 20 are arranged is the width direction D1, the large-diameter tubes 20B are arranged in parallel with the three small-diameter tubes 20C so that the large-diameter tubes 20B are positioned at the ends (for example, rear ends) in the width direction D1.

  In the housing 16, a long support plate 31 that supports the tube 20 drawn from the liquid container holding portion 17 side, a guide plate 32 that is disposed so as to be substantially parallel to the support plate 31, and A carriage 33 that reciprocates along the guide plate 32 is accommodated. An opening 16 a is provided in the front upper portion of the housing 16. The space in which the carriage 33 reciprocates is located below the image reading device 14 and is exposed to the outside through the opening 16 a by the rotation of the image reading unit 13. That is, the image reading device 14 functions as a lid that covers the opening 16 a provided in the housing 16.

  If one side in the longitudinal direction of the guide plate 32 (for example, the side on which the liquid container holding portion 17 is disposed) is the home side and the opposite side is the anti-home side, the carriage 33 has the home side as the starting end of movement. The forward movement to the non-home side and the backward movement to the home side are performed alternately. In FIG. 2, the carriage 33 is disposed at the home position that is the starting end of the movement.

  The plurality of tubes 20 are extended from the home side to the non-home side in a state of being parallel in the front-rear direction along the support plate 31, are curved upward near the center of the moving region of the carriage 33, and The extending direction is reversed upward toward the home side. The plurality of inverted tubes 20 are extended toward the home side and connected to the carriage 33 from the front side.

  Here, among the plurality of tubes 20, a portion that is linearly arranged toward the non-home side along the support plate 31 is a fixed extending portion 20 n, and a portion that curves upward to reverse the extending direction Is a curved portion 20r, and a portion arranged linearly toward the home side above the support plate 31 is a movable extending portion 20m. Further, the direction in which the fixed extending portion 20n extends and intersects (preferably orthogonally) the width direction D1 is referred to as an extending direction D2.

  The fixed extending portion 20n is fixed to the support plate 31 by a fixture 34. When the carriage 33 reciprocates along the guide plate 32, the plurality of tubes 20 are bent and displaced together. For example, when the carriage 33 moves forward from the home side, the curved portion 20r extends in a straight line and is disposed on the support plate 31, and accordingly, the movable extending portion 20m forms the curved portion 20r from the non-home side. To go. Further, when the carriage 33 moves backward from the non-home side, the length of the movable extending portion 20m gradually increases.

  As shown in FIG. 3, the carriage 33 holds a recording head 35. The recording head 35 has a plurality of nozzles 36 that eject liquid, and performs recording on the medium S by ejecting the liquid supplied through the tube 20 from the nozzle 36. At this time, the medium S is conveyed toward a direction (preferably in the present embodiment) that intersects (preferably orthogonally) the moving direction of the recording head 35. That is, in the present embodiment, the extending direction D2 is a direction along the moving direction of the carriage 33, and the width direction D1 is a direction along the transport direction of the medium S when performing recording.

  Above the space where the tube 20 bends and displaces, a wall surface 14a serving as the bottom surface of the image reading device 14 exists. Since the tube 20 is worn when the tube 20 repeatedly slides on the wall surface 14 a as the carriage 33 moves, the recording apparatus 11 includes a cover 21 for protecting the tube 20. The cover 21 covers at least a portion of the tube 20 including the bending portion 20r and the movable extending portion 20m that can be the bending portion 20r from the outer edge side of the bending, and bends and displaces following the bending displacement of the tube 20. The cover 21 of the present embodiment has a sheet shape that covers the plurality of tubes 20. In FIG. 2, the cover 21 is not shown to clearly show the configuration of the tube 20.

  That is, the recording apparatus 11 includes a recording head 35 that performs recording on the medium S using a liquid, a tube 20 that can be deflected to supply the recording head 35 with a liquid, and a cover 21 that covers the tube 20.

  As shown in FIG. 4, the protruding portion 23 and the friction reducing portion 24 are arranged side by side at a position in contact with the cover 21 on the wall surface 14 a facing the space where the tube 20 is bent and displaced. The protruding portion 23 is a linear rib protruding from the wall surface 14a so as to extend along the extending direction D2 of the tube 20, for example. The friction reduction unit 24 is a rotating body such as a roller that is rotatably supported on the wall surface 14a. Since the friction reduction unit 24 made of a rotating body rotates with the movement of the cover 21 in contact, the frictional force generated when the cover 21 comes into contact is smaller than the protrusion 23.

  Here, as shown by a two-dot chain line in FIG. 4, when the carriage 33 approaches the most anti-home side (left side in FIG. 4) in the course of movement, the tube 20 is pulled by the carriage 33 and extends onto the support plate 31. While the portion becomes longer, the curved portion 20r and the movable extension portion 20m become shorter. When the carriage 33 moves from this position toward the home side (right side in FIG. 4), as shown by the solid line in FIG. 4, the tube 20 is loosened, and the curved portion 20r expands upward.

  As a result, the contact pressure with respect to the protrusion 23 of the cover 21 covering the tube 20 is increased. The protrusion 23 is disposed in an area where the cover 21 may come into contact with the movement of the carriage 33, and the friction reduction section 24 is disposed in a position where the contact pressure of the cover 21 is particularly high in that area. The That is, it is preferable that the friction reduction part 24 is disposed at a position where the contact pressure with the cover 21 is higher than that of the protrusion 23. The protruding length from the wall surface 14 a is preferably set so that the friction reducing portion 24 is longer than the protruding portion 23 so that the cover 21 can easily come into contact with the friction reducing portion 24.

  When the carriage 33 approaches the home side most in the course of movement, the tube 20 is pulled by the carriage 33 and the movable extending portion 20m becomes longer. Then, since the curved portion 20r is difficult to expand upward due to the weight of the movable extending portion 20m and the liquid in the movable extending portion 20m, the contact pressure on the protruding portion 23 of the cover 21 is not so high. Further, as the movable extending portion 20m becomes longer, the contact area of the cover 21 with the protruding portion 23 increases.

  For this reason, the cover 21 covering the tube 20 is unlikely to contact the wall surface 14a or the protruding portion 23 at a position close to the home side, and even if contacted, the contact pressure is low. That is, in the vicinity of the center of the movement area of the carriage 33 (particularly, the area slightly closer to the home side than the center), the cover 21 covering the tube 20 expands upward, and the contact pressure with respect to the protrusion 23 increases. Therefore, the friction reduction unit 24 may be disposed in a region near the center excluding both end portions of the movement region of the carriage 33 (particularly, a region slightly closer to the home side than the center).

  As shown in FIG. 5, the protrusions 23 are provided as a plurality of (two rows) as linear ribs extending in the extending direction D2 so as to be aligned in the width direction D1. Moreover, the friction reduction part 24 is arrange | positioned in the part which notched some protrusions 23 extended in the extending direction D2. In the present embodiment, as an example, two at the positions aligned with the protrusions 23 and the extending direction D2, and one at a position sandwiched between the two rows of protrusions 23 in the width direction D1, A roller that is a rotating body is placed. Thus, the friction reduction part 24 does not necessarily need to be in a position aligned with the protruding part 23 in the extending direction D2.

Next, the operation of the recording apparatus 11 configured as described above will be described.
When the recording head 35 ejects liquid from the nozzles 36, unintended fine mist is generated in addition to droplets necessary for recording. When such mist adheres to and accumulates on the cover 21, the cover 21 sticks to the wall surface 14a, and the carriage 33 becomes difficult to move or the moving speed changes, so that the landing positions of the droplets shift. There is a risk that. Therefore, by providing the protruding portion 23 on the wall surface 14a, the contact area of the cover 21 can be reduced and sticking of the cover 21 can be suppressed.

  However, when the protrusion 23 is provided, the cover 21 is likely to wear due to repeated sliding contact with the protrusion 23. In particular, when the cover 21 is greatly bent upward together with the tube 33 as the carriage 33 moves, the contact pressure of the cover 21 against the protruding portion 23 increases, so that the cover 21 is more easily worn. In this respect, in the present embodiment, since the friction reducing portion 24 having a frictional force smaller than that of the protruding portion 23 is disposed at a position where the contact pressure of the cover 21 is increased, wear of the cover 21 can be suppressed.

According to the above embodiment, the following effects can be obtained.
(1) The friction reducing unit 24 reduces the frictional force generated by the contact between the cover 21 and the projecting portion 23, whereby the load applied to the cover 21 along with the contact with the projecting portion 23 can be reduced. Therefore, wear of the cover 21 that protects the tube 20 can be suppressed.

  (2) Since the friction reducing unit 24 is a rotatable rotating body, the frictional force generated by the contact is smaller than that of the rib that is the fixedly arranged protruding portion 23 by rotating when the cover 21 comes into contact. Become. Therefore, the load applied to the cover 21 due to the contact can be reduced, and the wear of the cover 21 can be suppressed.

  (3) Since the friction reducing portion 24 has a longer protruding length from the wall surface 14 a than the protruding portion 23, the friction reducing portion 24 takes precedence over the protruding portion 23 when the cover 21 covering the tube 20 approaches the wall surface 14 a. In contact with the cover 21. For this reason, the frictional force which acts on the cover 21 by contact can be reduced.

In addition, you may change the said embodiment like the example of a change shown below. Moreover, you may combine the said embodiment and the following modified example arbitrarily.
As shown in FIG. 6, the friction reduction portion 24 includes the rotation shaft 24a and the outer peripheral surface 24b extending in the width direction D1 so as to straddle the plurality of protrusions 23 arranged in the width direction D1, and the protrusion 23 and the extending direction. A stepped roller in which a roller portion 24c that is one step higher than the outer peripheral surface 24b protrudes from the portion aligned with D2 may be used.

  As shown in FIG. 7, a first projecting portion 23 </ b> B that receives a reaction force from the large-diameter tube 20 </ b> B through the cover 21 as a projecting portion 23 on the wall surface 14 a facing the space where the tube 20 is deflected and displaced, and the cover 21 A second projecting portion 23C that receives a reaction force from the small-diameter tube 20C may be provided so as to project. In this case, the length in the width direction D1 in which the tubes 20 are arranged is preferably longer (that is, wider) in the first protrusion 23B than in the second protrusion 23C.

According to this configuration, it is possible to disperse the reaction force acting on the cover 21 sandwiched between the large-diameter tube 20B and the first projecting portion 23B, thereby suppressing the wear of the cover 21.
As shown in FIG. 8, the first projecting portion 23 </ b> B that receives the reaction force from the large-diameter tube 20 </ b> B through the cover 21 as the projecting portion 23 on the wall surface 14 a facing the space where the tube 20 is deflected and displaced, and the cover 21 A second projecting portion 23C that receives a reaction force from the small-diameter tube 20C may be provided so as to project. In this case, it is preferable that the first protruding portion 23B has a shorter protruding length from the wall surface 14a than the second protruding portion 23C.

  According to this configuration, the cover 21 sandwiched between the large-diameter tube 20B and the first protrusion 23B is shortened by shortening the protrusion length of the first protrusion 23B that receives the reaction force from the large-diameter tube 20B via the cover 21. The reaction force acting on can be reduced. In addition, you may make the 1st protrusion part 23B with a short protrusion length shown in FIG. 8 wide like the 1st protrusion part 23B shown in FIG.

  As shown in FIG. 9, the region F located on the opposite side to the home side (the left side in FIG. 9) from the center (position where the fixing tool 34 is located) on the wall surface 14 a has a higher contact pressure with respect to the wall surface 14 a of the cover 21. You may increase the number of the protrusion parts 23 arrange | positioned in this area | region F. FIG.

  As shown in FIG. 10, as the projecting portion 23, an inclined rib 23 m that obliquely intersects with the linear rib 23 s extending in the extending direction D <b> 2 may be provided in the region F where the contact pressure with respect to the wall surface 14 a of the cover 21 increases. .

  As shown in FIG. 11, a branch rib 23 n is provided in which a linear rib 23 s as the projecting portion 23 is branched into a plurality of (for example, two) ribs 23 in a region F where the contact pressure with respect to the wall surface 14 a of the cover 21 is increased. May be.

  -As shown in FIGS. 9-11, the area | region F (area | region which arrange | positions the friction reduction part 24) where the contact pressure with respect to the wall surface 14a of the cover 21 becomes high can be changed according to arrangement | positioning etc. of the tube 20. . 9 to 11, the illustration of the friction reducing portion 24 is omitted, and the arrangement of the protruding portions 23 is illustrated.

  -The friction reduction part 24 does not necessarily need to be provided in the wall surface 14a, for example, may be provided in the surface of the cover 21 or the outer side of the tube 20. FIG. In this case, the friction reduction unit 24 may not be a rotating body, and for example, a seal having a smaller friction than the cover 21 or a semispherical member may be attached to the cover 21 as the friction reduction unit.

  The cover 21 is not limited to a single sheet, and may be a plurality of sheets arranged in the width direction D1 for each of one or a plurality of tubes 20, or a net-like shape that surrounds the tubes 20 in the circumferential direction. It may be a plurality of annular frames arranged at a predetermined interval so as to surround the tube 20 in the circumferential direction. In this case, a friction reducing unit 24 such as a roller or a semi-spherical member may be provided in the gap between the covers 21 arranged in the width direction D1 or the extending direction D2.

The protrusion 23 is not limited to a linear rib, and may be a large number of bosses or point-like protrusions (point texture pattern) provided on the wall surface 14a at predetermined intervals.
The recording apparatus 11 may include, for example, an automatic paper feeding apparatus that automatically feeds the medium S or a lid that covers the opening 16a so as to be openable and closable instead of the image reading unit 13.

  The tube 20 is not limited to the one in which the fixed extending portion 20n and the movable extending portion 20m are bent in the vertical direction, and the tube 20 is bent in the aspect in which the fixed extending portion 20n and the movable extending portion 20m are arranged in the front and rear. You may let them. In this case, either the fixed extension 20n or the movable extension 20m may be disposed on the front side. In this case, the wall surface 14 a is not the bottom surface of the image reading device 14, but is constituted by another member in the housing 16. That is, the wall surface 14a is not limited to the lid that covers the rotating image reading device 14 or the opening 16a so as to be opened and closed, but may be a fixed member.

  The liquid container holding unit 17 is not limited to be disposed outside the housing 16, and may be disposed inside the housing 16. Further, the liquid container 18 held by the liquid container holding part 17 is not limited to be arranged in the front-rear direction (width direction D1), but may be arranged in the extension direction D2.

  The liquid ejected by the liquid ejecting unit is not limited to ink, and may be, for example, a liquid material in which functional material particles are dispersed or mixed in the liquid. For example, recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. It may be configured.

  The medium S is not limited to paper, but may be a plastic film, a thin plate, or the like, or may be a fabric used in a printing apparatus. Further, the medium S does not have to be a single sheet cut to a predetermined size. For example, the medium S may be a roll-shaped medium wound in a cylindrical shape, or a garment having an arbitrary shape such as a T-shirt. It may be a three-dimensional object of any shape such as tableware or stationery.

  DESCRIPTION OF SYMBOLS 11 ... Recording device, 12 ... Recording unit, 13 ... Image reading unit, 14 ... Image reading device, 14a ... Wall surface, 15 ... Holding plate, 16 ... Housing | casing, 16a ... Opening, 17 ... Liquid container holding part, 18 ... Liquid container, 20 ... tube, 20B ... large diameter tube, 20C ... small diameter tube, 20m ... movable extension part, 20n ... fixed extension part, 20r ... curved part, 21 ... cover, 23 ... projection part, 23B ... first 1 protrusion part, 23C ... 2nd protrusion part, 23m ... inclined rib, 23n ... branching rib, 23s ... linear rib, 24 ... friction reduction part, 24a ... rotating shaft, 24b ... outer peripheral surface, 24c ... roller part, 31 ... support Plate, 32 ... Guide plate, 33 ... Carriage, 34 ... Fixing tool, 35 ... Recording head, 36 ... Nozzle, F ... Area, P ... Original, S ... Media, D1 ... Width direction, D2 ... Extension direction.

Claims (5)

A recording head for recording on a medium using a liquid;
A flexible and displaceable tube for supplying liquid to the recording head;
A cover that covers the tube and bends and displaces following the tube;
A projecting portion projecting to a position in contact with the cover;
A friction reducing portion for reducing a frictional force generated by contact between the cover and the protruding portion;
A recording apparatus comprising: The protruding portion is a rib protruding from a wall surface facing a space where the tube is bent and displaced,
The recording apparatus according to claim 1, wherein the friction reduction unit is a rotating body that is rotatably provided on the wall surface. The protruding portion and the friction reducing portion are arranged side by side on a wall surface facing a space where the tube is bent and displaced,
The recording apparatus according to claim 1, wherein the protrusion length from the wall surface is longer in the friction reduction portion than in the protrusion portion. A carriage that holds the recording head and reciprocates;
As the plurality of tubes having different diameters, a large-diameter tube having the largest diameter and a small-diameter tube having a smaller diameter than the large-diameter tube are connected in parallel to the carriage.
On the wall surface facing the space where the tube bends and displaces, as the protrusion, a first protrusion that receives a reaction force from the large-diameter tube via the cover, and a reaction force from the small-diameter tube via the cover A second projecting portion for receiving,
The recording apparatus according to any one of claims 1 to 3, wherein the first protrusion has a protrusion length shorter than that of the second protrusion. A carriage that holds the recording head and reciprocates;
As the plurality of tubes having different diameters, a large-diameter tube having the largest diameter and a small-diameter tube having a smaller diameter than the large-diameter tube are connected in parallel to the carriage.
On the wall surface facing the space where the tube bends and displaces, as the protrusion, a first protrusion that receives a reaction force from the large-diameter tube via the cover, and a reaction force from the small-diameter tube via the cover A second projecting portion for receiving,
The recording apparatus according to claim 1, wherein a length of the tubes in the direction in which the tubes are arranged is longer in the first protrusion than in the second protrusion.

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