JP6402995B2 - Medium pressing member and recording apparatus - Google Patents

Description

  The present invention relates to a medium pressing member and a recording apparatus including the medium pressing member.

  2. Description of the Related Art Conventionally, ink jet printers that perform printing by ejecting ink or the like onto a medium such as paper conveyed to a medium support unit are known. For example, Patent Document 1 proposes a liquid ejecting apparatus (recording apparatus) that can easily form ribs on a medium support portion.

  In the recording apparatus described in Patent Document 1, the medium support portion includes a concave portion having a suction hole and a support member disposed in the concave portion, and a rib is easily formed on the medium support portion by the support member. Can do. The paper unrolled from the cylindrical roll body is transported to the medium support unit by the transport roller, adsorbed to the medium support unit, and the ink ejected from the liquid ejecting unit is landed, and a predetermined image is printed.

  For example, if the paper is lifted from the medium support portion by the paper roll unrolled from the cylindrical roll body, the separation distance between the paper and the liquid ejecting portion may be non-uniform and print quality may deteriorate. There is. For this reason, the medium pressing member is attached (attached) to the medium supporting portion, the end portion of the sheet is sandwiched between the medium pressing member and the medium supporting portion, and the sheet lifting from the medium supporting portion is suppressed by the medium pressing member. .

  On the other hand, there are various paper sizes, and it is necessary to move the medium pressing member and adjust the mounting position of the medium pressing member each time a different size paper is used. Further, in maintenance of the recording apparatus, it is necessary to remove the medium pressing member from the medium support portion and readjust the mounting position of the medium pressing member. For this reason, the user needs to hold (hold) the medium pressing member and perform attachment / detachment and movement (position adjustment) of the medium pressing member.

JP 2014-94540 A

  When the medium pressing member has a shape that is difficult to hold (hold), it is difficult to attach / detach and move the medium pressing member. In the recording apparatus described in Patent Document 1, an appropriate shape of the medium pressing member is not disclosed, and there is a possibility that it is difficult to hold (hold) the medium pressing member.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A medium pressing member according to this application example is a medium pressing member that is mounted on a medium support portion and can press a medium between the medium support portion and the medium pressing member. And a holding portion for holding the device during movement.

  Providing a holding portion on the medium pressing member makes it easier to grip (hold) the medium pressing member.

  Application Example 2 In the medium pressing member according to the application example described above, the holding unit may be provided at an end of the main body in the conveyance direction of the medium when the medium holding member is mounted. preferable.

  Holding (holding) the holding part provided at the end of the main body in the direction of conveyance of the medium and attaching / detaching or moving the medium pressing member makes it difficult to apply an extra load other than the holding part. In addition to being difficult to deform, the operability of attaching / detaching and moving the medium pressing member is improved.

  Application Example 3 In the medium pressing member according to the application example described above, the holding portion projects from the main body portion, and in a direction intersecting the transport direction, the holding portion is inclined so as to move away from the medium support portion as the distance from the main body portion increases. It is preferable.

  Since the holding unit is inclined so as to move away from the medium support unit as it moves away from the main body unit in a direction that protrudes from the main body unit and intersects the conveyance direction of the medium, the user places an extra load on the main body unit. Without holding (holding) the holding portion, the medium pressing member can be attached and detached or moved.

  Application Example 4 In the medium pressing member according to the application example described above, the holding unit is provided at an end portion of the main body unit in a direction intersecting the medium conveyance direction in a state where the medium holding unit is mounted. It is preferable.

  When holding (holding) the holding part provided at the end of the main body part in the direction intersecting the medium conveyance direction and attaching / detaching or moving the medium pressing member, it becomes difficult to apply an extra load other than the holding part, The medium pressing member is not easily deformed, and the operability for attaching / detaching and moving the medium pressing member is improved.

  Application Example 5 In the medium pressing member according to the application example described above, the holding portion projects from the main body portion and is inclined so as to move away from the medium support portion as the distance from the main body portion increases in the transport direction. Is preferred.

  Since it has a holding part that protrudes from the main body part and inclines so as to move away from the medium support part as it moves away from the main body part in the conveyance direction of the medium, the user can hold the holding part without applying extra load to the main body part It can be gripped (held), and the medium pressing member can be attached / detached or moved.

  Application Example 6 In the medium pressing member according to the application example, the main body portion has a fixing member that can be fixed to the medium support portion on the downstream side in the transport direction, and the holding portion is the main body portion. It is preferable that it is provided in the downstream of the said conveyance direction.

  The fixing member serves as a fulcrum for allowing the medium pressing member to rest and stabilize on the medium supporting portion. The holding portion serves as an action point where a force for attaching / detaching or moving the medium pressing member acts. When the action point (holding part) is located near the fulcrum (fixing member), the principle of leverage is used compared to when the action point (holding part) is located far from the fulcrum (fixing member). The influence of the force of the action point (holding portion) on the fulcrum (fixing member) side is reduced, and the medium pressing member is hardly deformed on the fulcrum (fixing member) side. Therefore, in order to make the medium pressing member difficult to deform, it is preferable to provide the action point (holding portion) near the fulcrum (fixing member). Therefore, it is preferable to provide both the fixing member and the holding portion on the downstream side of the medium pressing member in the medium transport direction.

  Application Example 7 A recording apparatus according to this application example includes a recording unit and the medium pressing member described in the application example.

  The medium pressing member described in the application example described above has a holding portion, and by gripping (holding) the holding portion, it is difficult to apply an extra load other than the holding portion, and the medium pressing member is not easily deformed. Therefore, in the recording apparatus including the medium pressing member described in the above application example, the medium pressing member is not easily deformed, and inconvenience due to the deformation of the medium pressing member, for example, a decrease in print quality or a malfunction (failure) of the liquid ejecting unit occurs. Hateful.

FIG. 3 is a perspective view of the recording apparatus according to the first embodiment. FIG. 2 is a schematic diagram illustrating a schematic configuration of a recording apparatus according to the first embodiment. FIG. 3 is a schematic plan view illustrating a state of a medium support portion and a medium pressing member in a region A surrounded by a broken line in FIG. 2. FIG. 4 is a schematic sectional view taken along line B-B ′ of FIG. 3. FIG. 4 is a schematic sectional view taken along line C-C ′ of FIG. 3. FIG. 3 is a perspective view of a medium pressing member according to the first embodiment. FIG. 4 is a schematic sectional view taken along line D-D ′ in FIG. 3. (A) is an enlarged view of a portion where the holding unit according to the first embodiment is arranged. (B) is an enlarged view of a portion where a holding unit according to Comparative Example 1 is arranged. (C) is an enlarged view of a portion where a holding unit according to Modification 2 is arranged. FIG. 6 is a schematic plan view illustrating a state of a medium support unit and a medium pressing member according to a second embodiment. FIG. 10 is a schematic sectional view taken along line E-E ′ of FIG. 9. FIG. 6 is a schematic cross-sectional view illustrating a state of a medium pressing member according to a third embodiment. The enlarged view of the part by which the holding part which concerns on the modification 1 is arrange | positioned.

  Embodiments of the present invention will be described below with reference to the drawings. Such an embodiment shows one aspect of the present invention and does not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. In each of the following drawings, the scale of each layer or each part is made different from the actual scale so that each layer or each part can be recognized on the drawing.

(Embodiment 1)
"Overview of the recording device"
FIG. 1 is a perspective view of the recording apparatus according to the present embodiment. FIG. 2 is a schematic diagram illustrating a schematic configuration of the recording apparatus according to the present embodiment.
First, the outline of the recording apparatus 1 will be described with reference to FIGS. 1 and 2.

As shown in FIG. 1, the recording apparatus 1 according to the present embodiment is a large format printer (LFP) that handles a long sheet S. The recording apparatus 1 includes a pair of leg portions 13 with wheels 12 attached to the lower end, and a housing portion 14 assembled on the leg portions 13.
The sheet S is an example of the “medium” in the present invention, and is composed of, for example, a cloth such as polyester, paper, film, or the like.

  A feeding unit 15 that feeds the sheet S toward the housing unit 14 is disposed below the rear side of the housing unit 14. The paper S is a roll paper, and is a transfer for transferring a transfer image (mirror image) formed so as to leave a blank at the end portion in the longitudinal direction of the housing portion 14 to a transfer medium and performing sublimation transfer printing. Media (transfer paper). The recording apparatus 1 is an ink jet printer that forms a transfer image by ejecting sublimation printing ink, which is an example of a liquid, onto the paper S.

  A winding unit 16 supported by the leg unit 13 is disposed below the front side of the housing unit 14. Between the feeding unit 15 and the winding unit 16, a medium guide unit 17 is disposed along the conveyance path of the paper S.

  The medium guide portion 17 has a rear end side housed in the housing portion 14 and a front end side protruding forward from the housing portion 14. Further, a discharge port 14 a for discharging the paper S from the inside of the housing part 14 is formed on the front side of the housing part 14 at a position above the medium guiding part 17.

  A tension applying mechanism 18 that applies tension to the paper S positioned between the medium guide unit 17 and the winding unit 16 is provided in the vicinity of the winding unit 16. The tension applying mechanism 18 includes a pair of arm members 19 that are rotatably supported at the lower portion of the leg portion 13, and a tension roller 20 that is rotatably supported at the distal ends of the pair of arm members 19. The winding unit 16 includes a pair of holders 21 for holding a core material (not shown) (for example, a paper tube) that winds the printed paper S in a cylindrical shape from both sides in the axial direction.

  A control unit 22 that controls the operation of the recording apparatus 1 is provided in the housing unit 14. In addition, an operation panel 23 for performing a setting operation and an input operation is provided on the upper portion of the housing portion 14 on the first end side in the longitudinal direction of the housing portion 14 (right end side in FIG. 1). The operation panel 23 is electrically connected to the control unit 22.

  A liquid storage container 24 that can store ink is provided at the lower end of the casing 14 on the first end side (right end side in FIG. 1) in the longitudinal direction of the casing 14 that is outside the conveyance path of the paper S. It has been. A plurality (four in this embodiment) of liquid storage containers 24 are provided corresponding to the type and color of ink.

  Hereinafter, the longitudinal direction of the housing part 14 is defined as the X direction, the short direction of the housing part 14 is defined as the Y direction, and the direction perpendicular to the X direction and the Y direction and along the gravity direction is defined as the Z direction. Further, viewing from the Z direction is referred to as planar view.

  As shown in FIG. 2, the feeding unit 15 holds a roll body R <b> 1 in which unused paper S is wound in a cylindrical shape. In addition, a plurality of sizes of roll bodies R1 having different widths (lengths in the X direction) and the number of windings are loaded in the feeding unit 15 in an exchangeable manner. Regardless of the size of the roll body R1, the roll body R1 is loaded into the feeding unit 15 in a state of being brought closer to the first end side in the X direction (right end side in FIG. 1). In other words, in the recording apparatus 1, the alignment reference position of the paper S is set on the first end side in the X direction. Then, the feeding unit 15 rotates the roll body R1 counterclockwise in FIG. 2, whereby the sheet S is unwound from the roll body R1 and fed (conveyed) into the housing unit 14.

In the housing unit 14, a pair of transport rollers 25 that transports the paper S, a recording unit 26 that performs printing (recording) on the paper S, a medium support unit 27 that supports the paper S, and the paper S are sucked. The suction mechanism 28 is accommodated. In the housing 14, the paper S is transported in the transport direction F (Y direction) by the transport roller pair 25.
The transport direction F (Y direction) is an example of the “medium transport direction” in the present invention. The X direction orthogonal to the transport direction F (Y direction) is an example of the “direction intersecting the transport direction of the medium” in the present invention.

  The recording unit 26 includes guide shafts 29 and 30 that extend in the X direction, a carriage 31 that is supported by the guide shafts 29 and 30, and a liquid ejecting unit 32 that is held below the carriage 31. It has been. The carriage 31 reciprocates along the guide shafts 29 and 30 in a moving region extending in the X direction.

  At both ends of the guide shafts 29 and 30 in the X direction, an adjusting mechanism 33 that changes the height (position in the Z direction) of the liquid ejecting unit 32 in order to adjust the separation distance between the liquid ejecting unit 32 and the sheet S. Is provided. In addition, a reflective sensor 34 as a paper width sensor is held below the carriage 31 at a position downstream of the liquid ejecting unit 32 in the transport direction F.

  The reflective sensor 34 is an optical sensor including a light source unit and a light receiving unit (not shown). The reflected light of light emitted downward from the light source unit is received by the light receiving unit, and the reflected light received by the light receiving unit is received. A detection value V (voltage value) corresponding to the strength is output to the control unit 22. Further, detection is performed by the reflection type sensor 34 while moving the carriage 31 in the X direction, and the control unit 22 detects the position where the reflection target changes, that is, the positions of both ends of the paper S in the X direction based on the detection value V. As a result, the width of the paper S (the length in the X direction) is calculated.

  Then, according to the detected width of the sheet S, the liquid ejecting unit 32 ejects the ink supplied from the liquid storage container 24 onto the sheet S conveyed along the conveying path, thereby recording (printing). Is done. Further, the printed sheet S is guided obliquely downward along the medium guiding portion 17 and then wound around the winding portion 16 to form a roll body R2. At this time, the tension roller 20 presses the back side of the paper S that hangs down from the medium guide unit 17 by its own weight, so that tension is applied to the paper S wound up by the winding unit 16.

  In the recording apparatus 1, the sheet S can be discharged without being wound around the winding unit 16. For example, the printed paper S can be stored in a discharge basket (not shown) attached in place of the winding unit 16.

"Outline of media support and media presser"
FIG. 3 is a schematic plan view showing the state of the medium support portion and the medium pressing member in the region A surrounded by the broken line in FIG. FIG. 4 is a schematic cross-sectional view along the line BB ′ in FIG. FIG. 5 is a schematic cross-sectional view taken along the line CC ′ of FIG. FIG. 6 is a perspective view of the medium pressing member according to the present embodiment. FIG. 7 is a schematic cross-sectional view taken along the line DD ′ of FIG.
In FIG. 4, the opening 515 formed in the first portion 53 of the main body 52 of the medium pressing member 51 is not shown. FIG. 6 is a perspective view of the medium pressing member 51 illustrated in FIGS. 4 and 5 as viewed from the carriage 31 toward the medium support portion 27.
Hereinafter, an outline of the medium support portion 27 and the medium pressing member 51 will be described with reference to FIGS. 3 to 7.

  As shown in FIG. 3, a groove portion 42 and a reflection groove portion 43 are formed on the upper surface 27 a of the medium support portion 27 so as to extend in the X direction. The groove portion 42 and the reflection groove portion 43 are formed in order along the transport direction F.

  Further, a suction hole 46 is formed between the groove 42 and the reflection groove 43 on the upper surface 27 a of the medium support portion 27. A suction hole 47 is formed on the upstream side in the transport direction F with respect to the suction hole 46, and a suction hole 48 is formed on the downstream side in the transport direction F with respect to the suction hole 46.

A pair of medium pressing members 51 (a first medium pressing member 51A and a second medium pressing member) are mounted on the upper surface 27a of the medium support portion 27. Specifically, the first medium pressing member 51A is mounted on the X (+) direction side of the position where the sheet S on the upper surface 27a of the medium support unit 27 is conveyed, and the sheet S on the upper surface 27a of the medium support unit 27 is conveyed. The second medium pressing member 51B is mounted on the X (−) direction side of the position. The first medium pressing member 51A and the second medium pressing member 51B have the same shape.
In the following description, the first medium pressing member 51A and the second medium pressing member 51B may be collectively referred to as the medium pressing member 51.

  The medium pressing member 51 has a main body portion 52 and a holding portion 55. The main body 52 is longer in the Y direction (conveyance direction F) than in the X direction. The holding unit 55 is provided at the end of the main body unit 52 on the downstream side in the transport direction F. That is, the medium pressing member 51 has the holding portion 55 on the downstream side in the transport direction F. On the downstream side of the medium pressing member 51 in the transport direction F, the holding unit 55, the main body unit 52, and the holding unit 55 are configured to be sequentially arranged along the X direction.

  The main body 52 has a first portion 53 disposed in the center and a second portion 54 disposed so as to sandwich the first portion 53. That is, the main body 52 is configured such that the second portion 54, the first portion 53, and the second portion 54 are sequentially arranged along the X direction.

  An opening 515 is formed near the center of the first portion 53 of the main body 52. A first fixing member 531 (see FIG. 4), which will be described later, is formed in a portion where the opening 515 is formed.

  A plurality of holes 514 are formed in the second portion 54 of the main body 52. In plan view, the end of the sheet S is disposed at a portion where the second portion 54 of the main body 52 and the upper surface 27a of the medium support 27 overlap. Therefore, it is possible to visually recognize the edge of the paper S through the plurality of holes 514.

  The sizes of the paper S are various, and the paper S has various widths (lengths in the X direction). When the paper S is attached to the recording apparatus 1, the position of the second medium pressing member 51B is moved in the X direction to adjust the distance between the first medium pressing member 51A and the second medium pressing member 51B. The sheet S is, for example, white, and has a higher reflectance than the upper surface 27a of the medium support unit 27, so that the boundary between the edge of the sheet S and the upper surface 27a of the medium support unit 27 can be easily determined (visually recognized). . The position of the second medium pressing member 51B is adjusted while checking the position of the end of the sheet S through the plurality of holes 514 so that the end of the sheet S is arranged at the center of the plurality of holes 514 in plan view. To do. Further, whether or not the first medium pressing member 51A is disposed at an appropriate position with respect to the paper S is confirmed through the plurality of holes 514, and if there is inconvenience, the position of the first medium pressing member 51A is also adjusted. To do.

  The medium pressing member 51 can be attached / detached or moved with respect to the medium supporting portion 27, and whether or not the medium pressing member 51 is arranged (attached) at an appropriate position with respect to the paper S or the medium supporting portion 27. In order to confirm, a plurality of holes 514 are formed in the second portion 54 of the main body 52 of the medium pressing member 51.

  As shown in FIGS. 4 and 5, the medium support portion 27 has a bottomed box shape, the bottom portion is disposed on the upper side, and is fixed below the moving region of the carriage 31. A box-shaped suction chamber forming member 35 is assembled to the lower part of the medium support portion 27. A negative pressure chamber 36 is formed by the medium support portion 27 and the suction chamber forming member 35.

  The suction chamber forming member 35 has a suction chamber 37 that communicates with the negative pressure chamber 36. That is, the negative pressure chamber 36 communicates with the suction chamber 37 via the suction hole 45. An exhaust fan 38 for discharging the air in the suction chamber 37 to the outside is attached to the suction chamber forming member 35. The suction chamber forming member 35 and the exhaust fan 38 constitute a suction mechanism 28.

  Suction holes 46, 47, 48 (see FIG. 3) formed in the upper surface 27 a of the medium support portion 27 communicate with the negative pressure chamber 36. The sheet S is held on the upper surface 27 a of the medium support portion 27 through the suction holes 46, 47 and 48. That is, the sheet S is sucked by the upper surface 27 a of the medium support unit 27 by the suction mechanism 28, and the distance between the sheet S and the liquid ejecting unit 32 is kept constant. As a result, the discharge state of the ink discharged from the liquid ejecting unit 32 onto the paper S becomes uniform, and a uniform image can be printed on the paper S.

  The reflection groove 43 formed on the upper surface 27 a of the medium support unit 27 faces the reflection type sensor 34. The light emitted from the reflective sensor 34 has a longer reflection distance when reflected by the reflecting groove 43 than when reflected by the upper surface 27 a of the medium support portion 27. As described above, when the paper S is white, the reflectance is higher than that of the medium support unit 27. Therefore, by setting the reflection groove 43 to be a reflection target of the light emitted from the reflective sensor 34, the light reflectance of the reflection groove 43 is clearly lower than the light reflectance of the paper S. The detection accuracy of is improved. Then, by performing the printing process according to the calculated width of the paper S, the ink does not adhere to the medium support portion 27 and the conveyed paper S is not contaminated.

  The first portion 53 of the main body portion 52 of the medium pressing member 51 is in contact with the upper surface 27 a of the medium support portion 27. The second portion 54 of the main body portion 52 of the medium pressing member 51 is separated from the upper surface 27 a of the medium support portion 27 so as to form a fixed interval with the upper surface 27 a of the medium support portion 27. The main body 52 of the medium pressing member 51 overlaps the region in which the liquid ejecting unit 32 moves in a plan view, and is disposed on the Z (−) direction side with respect to the liquid ejecting unit 32 so as not to interfere with the liquid ejecting unit 32. Yes.

Note that the holding portion 55 (see FIG. 3) of the medium pressing member 51 does not overlap the region in which the liquid ejecting portion 32 moves in a plan view, and the holding portion 55 of the medium pressing member 51 and the liquid ejecting portion 32 do not interfere with each other. It is like that.
Although details will be described later, the user holds the holding unit 55 and attaches / detaches or moves the medium pressing member 51. The holding portion 55 of the medium pressing member 51 is preferably enlarged so that the user can easily hold (hold) it within a range that does not interfere with the liquid ejecting portion 32 and other components.

As shown in FIGS. 4 and 6, the first portion 53 of the main body 52 of the medium pressing member 51 includes a first fixing member 531 and a second fixing member 532 formed in order along the transport direction F. ing.
The first fixing member 531 is disposed near the center of the first portion 53 of the main body 52. The second fixing member 532 is disposed on the downstream side in the transport direction F of the first portion 53 of the main body 52.
The second fixing member 532 is an example of the “fixing member” in the present invention.

  The first fixing member 531 is formed by cutting out the vicinity of the center of the first portion 53 of the main body 52 and bending it in the Z (−) direction. As a result, an opening 515 is formed in the portion where the first fixing member 531 is formed. The first fixing member 531 has a portion along the Z direction and a portion that intersects and inclines in the Z direction.

  The first fixing member 531 is a kind of spring member (locking member) that is elastically deformed. The first fixing member 531 is fitted into the groove portion 42 and is locked (fixed) to a convex portion that protrudes in the Y (−) direction of the groove portion 42.

The second fixing member 532 is formed by bending the downstream end portion in the transport direction F of the first portion 53 of the main body portion 52 in the Z (−) direction. The second fixing member 532 is attached so as to grip the downstream end portion of the medium support portion 27 in the transport direction F. The second fixing member 532 is a kind of spring member (engagement member) that is elastically deformed. The medium support portion 27 is engaged (fixed) with the downstream end portion in the transport direction F by the biasing force of the spring generated by deforming the second fixing member 532.
The second fixing member 532 is more strongly fixed to the medium support portion 27 than the first fixing member 531 and needs to be attached and detached with a stronger force. Further, the first fixing member 531 can be attached and detached with a weak force as compared with the second fixing member 532, and can be easily detached from the medium support portion 27.

  As described above, the first portion 53 of the main body 52 of the medium pressing member 51 includes the first fixing member 531 and the second fixing member 532 that can be fixed to the medium support portion 27, and the first fixing member 531 and the second fixing member 532 are fixed. The medium support unit 27 is fixed by a fixing member 532.

  As shown in FIG. 5, the second portion 54 of the main body 52 of the medium pressing member 51 is disposed so as to be separated from the upper surface 27 a of the medium support 27 and parallel to the upper surface 27 a of the medium support 27. ing. For this reason, a gap having a constant interval is formed between the second portion 54 of the main body 52 and the upper surface 27 a of the medium support portion 27.

  The sheet S (the end portion of the sheet S) discharged from the pair of transport rollers 25 in the transport direction F is between the upstream end in the transport direction F of the second portion 54 of the main body 52 and the upper surface 27a of the medium support unit 27. The second portion 54 of the main body portion 52 and the upper surface 27a of the medium support portion 27 pass between the second portion 54 of the main body portion 52 and the upper end 27a of the medium supporting portion 27, and the downstream end of the second portion 54 of the main body portion 52 in the transport direction F From the upper surface 27a of the medium support part 27, it is discharged to the medium guide part 17 side.

  The sheet S is unwound from the roll body R <b> 1 and conveyed to the medium support unit 27 via the conveyance roller pair 25. The paper S is affected by the shape of the roll body R1 wound in a cylindrical shape, and firewood is generated, and warpage in the Z (+) direction is likely to occur due to the firewood. The sheet S is passed between the second portion 54 of the main body 52 and the upper surface 27a of the medium support section 27, and the second portion 54 (the second portion 54 of the main body 52 is disposed on the Z (+) direction side with respect to the paper S. The medium pressing member 51) suppresses warping (lifting) of the sheet S from the upper surface 27a of the medium support portion 27 in the Z (+) direction. Therefore, the uniformity of the distance between the paper S and the liquid ejecting unit 32 is improved, and the print quality printed on the paper S can be improved.

  As described above, the medium pressing member 51 is a member capable of pressing the sheet S with the medium support portion 27. As described above, the medium pressing member 51 can be attached / detached or moved with respect to the medium support part 27, and has the main body part 52 and the holding part 55.

  As shown in FIG. 7, in the medium pressing member 51, the holding portion 55, the second portion 54 of the main body portion 52, the first portion 53 of the main body portion 52, the second portion 54 of the main body portion 52, and the holding portion. 55 are arranged in order along the X direction.

  One holding portion 55 is disposed at an end portion of the second portion 54 on the X (−) direction side of the main body portion 52. Specifically, one holding portion 55 projects in the X (−) direction from the second portion 54 of the main body portion 52, and away from the upper surface 27 a of the medium support portion 27 as the distance from the second portion 54 of the main body portion 52 increases. It is inclined.

  The other holding portion 55 is disposed at the end portion of the second portion 54 on the X (+) direction side of the main body portion 52. Specifically, the other holding portion 55 projects in the X (+) direction from the second portion 54 of the main body portion 52, and is separated from the upper surface 27 a of the medium support portion 27 as the distance from the second portion 54 of the main body portion 52 increases. It is inclined.

In other words, the holding portion 55 projects from the main body portion 52 and inclines so as to move away from the medium support portion 27 as it moves away from the main body portion 52 in the direction (X direction) intersecting the transport direction F. Since the holding portion 55 projects from the main body portion 52 (arranged outside the main body portion 52), the holding portion 55 is gripped by a human hand compared to the case where the holding portion 55 is arranged inside the main body portion 52. It is easy to (hold).
The user holds (holds) the holding unit 55 and attaches / detaches or moves the medium pressing member 51 with respect to the medium support unit 27.

“Effects of the holding part”
FIG. 8A is an enlarged view of a portion where the holding unit according to the present embodiment is arranged. FIG. 8A is an enlarged view of a portion where the holding portion 55 on the X (+) direction side in FIG. 7 is arranged, and illustrates a state of a force acting on the holding portion 55 when gripped by a human hand. Has been. FIG. 8B is an enlarged view of a portion where the holding unit according to Comparative Example 1 is arranged, and illustrates a state of a force acting on the holding unit 55A when gripped by a human hand. FIG. 8C is an enlarged view of a portion where the holding unit according to Comparative Example 2 is arranged, and illustrates a state of a force acting on the holding unit 55B when gripped by a human hand.
In FIGS. 8A and 8B, the holding portions 55 and 55A that are deformed by the force in the X (−) direction are illustrated by broken lines.

The holding portion 55 according to the present embodiment protrudes from the main body portion 52 (arranged outside the main body portion 52), and is separated from the upper surface 27a of the medium support portion 27 as the distance from the main body portion 52 (end portion of the main body portion 52) increases. So as to be inclined. An angle θ1 formed by the holding portion 55 and the main body portion 52 is an obtuse angle larger than 90 degrees.
The holding portion 55A according to the comparative example 1 is disposed along the Z direction. An angle θ2 formed by the holding portion 55A and the main body portion 52 is 90 degrees.
The holding part 55 </ b> B according to the comparative example 2 is disposed inside the main body part 52. The further away from the end of the main body portion 52, the more inclined it is from the upper surface 27 a of the medium support portion 27. An angle θ3 formed by the holding portion 55B and the main body portion 52 is an acute angle smaller than 90 degrees.
These points are the differences between the present embodiment, Comparative Example 1, and Comparative Example 2.

  As described above, the width of the paper S (dimensions in the X direction) varies, and when the paper S having different widths is loaded, the medium pressing member 51 is moved (slid) in the X direction so that the proper position is obtained. Adjust to. In the maintenance of the recording apparatus 1, the medium pressing member 51 is attached / detached or moved (position adjustment). That is, when changing the size of the paper S or maintaining the recording apparatus 1, the user holds the holding portion 55 of the medium pressing member 51 and attaches / detaches or moves (position adjustment) the medium pressing member 51.

  As described above, the medium pressing member 51 sandwiches the end portion of the paper S between the medium support portion 27 and the warp (lift) of the paper S from the upper surface 27a of the medium support portion 27 in the Z (+) direction. This suppresses the uniformity of the distance between the paper S and the liquid ejecting unit 32.

  When it is difficult for the user to hold (hold) the holding portion 55 of the medium pressing member 51, it is difficult to attach / detach or move the medium pressing member 51. Further, an excessive load (excessive force) is likely to act on the medium pressing member 51, and the medium pressing member 51 is likely to be deformed. If the medium pressing member 51 is deformed, it becomes difficult to uniformly suppress the lifting of the sheet S from the medium support portion 27 by the medium pressing member 51, and the separation distance between the sheet S and the liquid ejecting unit 32 is not good. It becomes uniform, and it becomes difficult for the medium pressing member 51 to uniformly suppress warpage of the paper S in the Z (+) direction from the upper surface 27a of the medium support portion 27. As a result, the print quality may be reduced. In addition, when the medium pressing member 51 is deformed, the medium pressing member 51 and the liquid ejecting unit 32 may interfere with each other, and the liquid ejecting unit 32 may be defective (failed).

In the medium pressing member 51 of the present embodiment, the user can easily attach and detach and move the medium pressing member 51 by gripping the holding portion 55, and an extra load (extra force) acts on the medium pressing member 51. And the medium pressing member 51 is not easily deformed. That is, it is difficult to apply an extra load other than the holding portion 55, and the medium pressing member 51 is not easily deformed, and the operability when the medium pressing member 51 is attached or detached is improved.
Details will be described below with reference to FIGS. 8A to 8C.

As shown in FIG. 8A, in the medium pressing member 51 of the present embodiment, when the user grips the holding portion 55 of the medium pressing member 51, a force F1 in a direction intersecting the holding portion 55 (an oblique direction) is generated. Works. The force F1 is decomposed into a force F2 in the X (−) direction and a force F3 in the Z (+) direction. The force F2 is a force that deforms the holding portion 55 in the X (−) direction. The force F3 is a force that lifts the holding portion 55 (medium pressing member 51) from the medium support portion 27 in the Z (+) direction.
Therefore, a force F <b> 3 is applied to the medium pressing member 51 to lift the medium pressing member 51 from the medium support portion 27 in the Z (+) direction.

Even when the holding portion 55 is deformed in the X (−) direction by the force F2, the angle formed by the holding portion 55 deformed in the X (−) direction and the main body portion 52 is 90, as indicated by a broken line in the drawing. Since the obtuse angle is greater than the degree, a force in the same direction as the holding portion 55 (the holding portion 55 indicated by a solid line) before the deformation acts. That is, the diagonal force F4 (the force F5 in the X (−) direction, the force F6 in the Z (+) direction) acts on the holding portion 55 deformed in the X (−) direction.
Therefore, even when the holding portion 55 is deformed in the X (−) direction, the force F6 that lifts the medium pressing member 51 from the medium support portion 27 in the Z (+) direction acts on the medium pressing member 51. .

  As shown in FIG. 8B, in the medium pressing member 51-1 of Comparative Example 1, when the user grips the holding portion 55A of the medium pressing member 51-1, the holding portion 55A is deformed in the X (−) direction. The force F1A to be applied acts on the holding portion 55A.

When the holding portion 55A is deformed in the X (−) direction by the force F1A, the angle formed by the holding portion 55A deformed in the X (−) direction and the main body portion 52 is an acute angle smaller than 90 degrees, as indicated by a broken line in the figure. become. Then, an oblique direction force F4A acts on the holding portion 55A deformed in the X (−) direction. The oblique direction force F4A is decomposed into an X (−) direction force F5A and a Z (−) direction force F6A.
Therefore, the force F6A that presses the medium pressing member 51-1 against the medium support portion 27 acts on the holding portion 55A that is deformed in the X (−) direction.

As shown in FIG. 8C, in the medium pressing member 51-2 of Comparative Example 2, when the user grips the holding portion 55B of the medium pressing member 51-2, an oblique force F1B is applied to the holding portion 55B. Works. The force F1B is decomposed into a force F2B in the X (−) direction and a force F3B in the Z (−) direction.
Therefore, a force F3B that presses the medium pressing member 51-2 against the medium support portion 27 acts on the holding portion 55B.

  As described above, in the medium pressing member 51 of the present embodiment, when the user holds the holding unit 55, forces F <b> 3 and F <b> 6 that lift the medium pressing member 51 from the medium supporting unit 27 act on the holding unit 55. In the medium pressing members 51-1 and 51-2 according to the comparative example 1 and the comparative example 2, when the user holds the holding portions 55A and 55B, the medium pressing members 51-1 and 51-2 are pressed against the medium support portion 27. Forces F6A and F3B act on the holding portions 55A and 55B.

  In the medium pressing member 51 of the present embodiment, when the user grips the holding portion 55, the forces F3 and F6 that lift the medium pressing member 51 from the medium supporting portion 27 in the Z (+) direction are applied. Compared with the medium pressing members 51-1 and 51-2 of Comparative Example 2, the medium pressing member 51 can be easily detached from the medium support portion 27 and the medium pressing member 51 can be moved.

  In the medium pressing members 51-1 and 51-2 of the comparative example 1 and the comparative example 2, when the user grips the holding portions 55A and 55B, the force that presses the medium pressing members 51-1 and 51-2 against the medium support portion 27. Since F6A and F3B act, removal of the medium pressing member 51 from the medium support portion 27 and movement of the medium pressing member 51 become difficult as compared with the medium pressing member 51 of the present embodiment.

  Further, in the medium pressing member 51 of the present embodiment, when the user grips the holding portion 55, the forces F3 and F6 that lift the medium pressing member 51 from the medium supporting portion 27 in the Z (+) direction act. Compared with the medium pressing members 51-1 and 51-2 of Example 1 and Comparative Example 2, the medium pressing member 51 can be attached and detached and moved with a small force. Since the medium pressing member 51 of the present embodiment can be attached / detached and moved with a small force compared to the medium pressing members 51-1 and 51-2 of the comparative example 1 and the comparative example 2, An extra load (excessive force) is unlikely to act on a portion other than the holding portion 55 (main body portion 52), and the medium pressing member 51 is unlikely to be deformed or damaged.

  As described above, the medium pressing member 51 according to the present embodiment extends from the main body portion 52 from the main body portion 52, that is, from the main body portion 52, that is, the holding portion 55 whose obtuse angle is greater than 90 degrees. Since the holding portion 55 is inclined so as to be farther away from the medium support portion 27, the medium pressing member 51 of the medium pressing member 51 is compared with the medium pressing members 51-1 and 51-2 according to the first and second comparative examples. The attachment and detachment and movement become easy, and deformation and breakage of the medium pressing member 51 hardly occur.

(Embodiment 2)
FIG. 9 is a diagram corresponding to FIG. 3, and is a schematic plan view illustrating a state of the medium support unit and the medium pressing member according to the second embodiment. FIG. 10 is a schematic cross-sectional view along the line EE ′ of FIG.

In the present embodiment, the formation position of the holding portion 55C of the medium pressing member 51-3 is different from that in the first embodiment, and other configurations are the same as those in the first embodiment.
Hereinafter, with reference to FIGS. 9 and 10, the recording apparatus according to the present embodiment will be described focusing on differences from the recording apparatus 1 according to the first embodiment. Moreover, about the same component as Embodiment 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIGS. 9 and 10, the holding portion 55 </ b> C of the medium pressing member 51-3 according to the present embodiment is an end portion in the direction (X direction) intersecting the transport direction F of the first portion 53 of the main body portion 52. Among them, they are provided both on the upstream side in the transport direction F and on the downstream side in the transport direction F.
That is, in the present embodiment, the holding portion 55C is provided at the end of the main body 52 in the direction intersecting with the conveyance direction F of the first portion 53. In the first embodiment, the second portion 54 of the main body 52 is conveyed. A holding portion 55 is provided at an end portion in the direction F. This is the difference between the present embodiment and the first embodiment.

  The user holds the holding portion 55C of the medium pressing member 51-3 and attaches / detaches the medium pressing member 51-3 or removes the medium pressing member 51-3 when the size of the paper S is changed or the recording apparatus 1 is maintained. Move it.

  The holding portion 55C projects from the main body portion 52 (arranged outside the main body portion 52), and in the transport direction F, the holding portion 55C is inclined so as to be separated from the upper surface 27a of the medium support portion 27. The angle that the holding portion 55C makes with the main body portion 52 is the same θ1 as the angle that the holding portion 55 of Embodiment 1 makes with the main body portion 52, and is an obtuse angle larger than 90 degrees. Therefore, in the medium pressing member 51-3 of the present embodiment, when the user holds the holding portion 55C, similarly to the medium pressing member 51 of the first embodiment, the medium pressing member 51-3 is moved from the medium support portion 27 to Z ( Since a force that lifts in the + direction acts, the attachment and detachment and movement of the medium pressing member 51-3 are facilitated, and deformation and breakage of the medium pressing member 51-3 are less likely to occur. That is, the same effect as the medium pressing member 51 according to the first embodiment can be obtained.

(Embodiment 3)
FIG. 11 is a diagram corresponding to FIG. 10 and is a schematic cross-sectional view illustrating a state of the medium pressing member according to the third embodiment.
In the present embodiment, the formation position of the holding portion 55C is different from that of the second embodiment, and other configurations are the same as those of the second embodiment.

  As shown in FIG. 11, the holding portion 55 </ b> C of the medium pressing member 51-4 according to the present embodiment is among the end portions in the direction (X direction) intersecting the transport direction F of the first portion 53 of the main body portion 52. It is provided on one downstream side in the transport direction F. In the second embodiment, the holding portions 55C are provided on both the upstream side and the downstream side in the transport direction F among the end portions in the direction (X direction) intersecting the transport direction F of the first portion 53 of the main body 52. ing. This is the difference between the present embodiment and the second embodiment.

  A second fixing member 532 that can be fixed to the medium support portion 27 at one of the ends in the direction (X direction) intersecting the transport direction F of the first portion 53 of the main body 52 on the downstream side of the transport direction F. Is provided. That is, the second fixing member 532 is disposed near the holding portion 55C.

The holding portion 55C serves as an action point at which a force for attaching / detaching or moving the medium pressing member 51-4 acts. The second fixing member 532 serves as a fulcrum for allowing the medium pressing member 51-4 to remain stationary on the medium support portion 27 and to be stabilized. When the action point (holding part 55C) is arranged near the fulcrum (second fixing member 532), the action point (holding part 55C) is arranged far from the fulcrum (second fixing member 532). , The influence of the force of the action point (holding portion 55C) on the fulcrum (second fixing member 532) side is reduced by the lever principle, and the medium pressing member 51-4 on the fulcrum (second fixing member 532) side is reduced. Becomes difficult to deform.
In the present embodiment, both the holding portion 55C and the second fixing member 532 are provided on the downstream side in the transport direction F of the medium pressing member 51-4, and the holding portion 55C is provided near the second fixing member 532. Therefore, compared to the case where the holding portion 55C is provided far from the second fixing member 532, the medium pressing member 51-4 is not easily deformed.

  Furthermore, since the angle θ1 formed by the holding portion 55C and the main body portion 52 is an obtuse angle larger than 90 degrees, when the user holds the holding portion 55C, the medium pressing member 51-4 is moved from the medium support portion 27 to Z (+ ) Acts to lift in the direction, and the medium pressing member 51-4 can be easily attached and detached.

  In the first embodiment, both the holding unit 55 and the second fixing member 532 are disposed on the downstream side in the transport direction F of the medium pressing member 51 (see FIG. 3). That is, since the holding portion 55 is disposed near the second fixing member 532, the medium pressing member 51 is not easily deformed as compared with the case where the holding portion 55 is disposed far from the second fixing member 532.

  Thus, it is preferable to arrange | position the holding | maintenance part which a user holds (hold | maintains) near the fixing member (2nd fixing member 532). Furthermore, it is preferable that the fixing member (first fixing member 531) arranged away from the holding portion can be attached and detached with a weaker force than the fixing member (second fixing member 532) arranged near the holding portion. For this reason, in this embodiment, the fixing member (first fixing member 531) arranged away from the holding unit is weaker than the fixing member (second fixing member 532) arranged near the holding unit. Can be removed.

The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification. A recording apparatus having a medium pressing member is also included in the technical scope of the present invention.
Various modifications other than the above embodiment are conceivable.

(Modification 1)
FIG. 12 is a diagram corresponding to FIG. 8A, and is an enlarged view of a portion where the holding unit according to Modification 1 is arranged.
In the present modification, the shape of the holding portion 55D is different from that of the first embodiment, and other configurations are the same as those of the first embodiment.

  As shown in FIG. 12, the holding portion 55D extends from the main body portion 52 and includes a first portion 55D1 that is inclined so as to be farther from the medium support portion 27 as it is farther from the main body portion 52, and a second portion 55D2 along the Z direction. Have. That is, the holding portion 55D includes a first portion 55D1 having an obtuse angle of 90 ° with respect to the main body 52 and a second portion 55D2 having an angle of 90 ° with the main body 52. .

The user holds the first portion 55D1 and the second portion 55D2 of the holding portion 55D, and attaches / detaches or moves the medium pressing member 51-5.
Since the holding portion 55D has a first portion 55D1 having an obtuse angle greater than 90 degrees with the main body portion 52, when the user holds the holding portion 55D, the medium pressing member 51-5 is moved to the medium. A force that lifts up in the Z (+) direction from the support portion 27 acts, so that the medium pressing member 51-5 can be easily attached and detached, and the medium pressing member 51-5 is hardly deformed or damaged.

  As described above, when the holding portion of the medium pressing member has a portion that protrudes from the main body portion and is inclined so as to move away from the medium support portion 27 as the distance from the main body portion increases, the medium pressing member is a technique of the present invention. Included in the scope.

(Modification 2)
The number of holding portions provided in the medium pressing member may be one as in the third embodiment, or may be two as in the first and second embodiments. Furthermore, as long as it is formed in a range that does not interfere with the liquid ejecting unit 32 and other parts, the number of holding units formed on the medium pressing member may be more than two.

  DESCRIPTION OF SYMBOLS 1 ... Recording device, 12 ... Wheel, 13 ... Leg part, 14 ... Case part, 14a ... Discharge port, 15 ... Feeding part, 16 ... Winding part, 17 ... Medium guide part, 18 ... Tension applying mechanism, 19 DESCRIPTION OF SYMBOLS ... Arm member, 20 ... Tension roller, 21 ... Holder, 22 ... Control part, 23 ... Operation panel, 24 ... Liquid container, 25 ... Conveying roller pair, 26 ... Recording part, 27 ... Medium support part, 27a ... Upper surface, 28 ... Suction mechanism, 29 ... Guide shaft, 30 ... Guide shaft, 31 ... Carriage, 32 ... Liquid ejecting section, 33 ... Adjustment mechanism, 34 ... Reflective sensor, 35 ... Suction chamber forming member, 36 ... Negative pressure chamber, 37 DESCRIPTION OF SYMBOLS ... Suction chamber, 38 ... Exhaust fan, 42 ... Groove part, 43 ... Reflection groove part, 46, 47, 48 ... Suction hole, 51 ... Medium pressing member of Embodiment 1, 51-1 ... Medium pressing member of Comparative Example 1, 51-2: Medium presser of Comparative Example 2 Material: 51-3: Medium pressing member of Embodiment 2; 51-4: Medium pressing member of Embodiment 3; 51-5: Medium pressing member of Modification 1; 51A: First medium pressing member; 51B: Second Medium pressing member, 52... Body portion, 53... First portion of body portion, 54... Second portion of body portion, 55 .. holding portion of embodiment 1, 55 A. holding portion of comparative example 1, 55 B. comparative example 2 55C ... the holding part of the second and third embodiments, 55D ... the holding part of the first modification, 531 ... the first fixing member, 532 ... the second fixing member.

Claims (4)

A medium pressing member that is mounted on a medium supporting part and capable of pressing a medium with the medium supporting part,
The main body,
A holding section for holding the detachable or moving;
I have a,
In a state of being mounted on the medium support unit,
The medium holding member , wherein the holding portion is provided at both ends of the main body portion in a direction intersecting the medium conveyance direction . 2. The medium according to claim 1 , wherein the holding unit protrudes from the main body unit and is inclined so as to move away from the medium support unit as the distance from the main body unit increases in a direction intersecting the transport direction. Holding member. The main body portion has a fixing member that can be fixed to the medium support portion on the downstream side in the transport direction,
The medium holding member according to claim 1, wherein the holding portion is provided on the downstream side of the main body portion in the transport direction. A recording section;
A medium support;
The medium pressing member according to any one of claims 1 to 3 ,
A recording apparatus comprising:

Images