JP2012196821A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device which can surely suck and hold a medium to be recorded, and can improve functionality and operability.SOLUTION: An inkjet printer 1 comprises: a plurality of pressure chambers 27A which communicate with at least one suction hole 26 at the rear face side of a platen 25 having a plurality of the suction holes 26; a pressure chamber 27B arranged at a side opposite to the platens 25 of the plurality of pressure chambers 27A; a wall 30 at which a plurality of suction holes 32 for making each pressure chamber 27A and the pressure chamber 27B communicate with each other; a suction mechanism 28 which sucks rolled paper R arranged on a medium support face via the suction holes 26 and the suction holes 32; and a slide member which has an area smaller than the rolled paper R, is arranged at the rear face side of the wall 30 in parallel with the wall 30, can move along a direction crossing the transfer direction of the rolled paper R in parallel therewith, is different in length in the direction of the parallel movement, and formed with a blocking part which can selectively block the plurality of suction holes 32.

Description

  The present invention relates to a recording apparatus.

  In a recording apparatus such as an ink jet printer, when recording processing is performed on a recording medium such as recording paper, it is necessary to support the recording medium with a platen so that the recording medium is in a certain posture (parallel) with respect to the recording head. is there.

In particular, when roll paper is used as the recording medium, the end of the roll paper is lifted from the platen by curling, so a paper suction unit is provided for sucking the roll paper to the platen to suppress the lift. There is something.
This paper suction unit usually has a large number of suction holes in the platen, and sucks and holds the roll paper on the platen by sucking outside air through the suction holes by a fan built in the back side of the platen (negative load). Pressure suction).

When a recording medium such as roll paper is placed on the platen and transported, all the suction holes are not necessarily provided depending on the size change of the recording medium (size change in the width direction), the transport state (position), etc. It is not necessarily covered by the recording medium. That is, since there is an open suction hole that is not covered by the recording medium, air leaks from the suction hole (air leak occurs).
If the number of suction holes in such an open state increases, the suction force for sucking the recording medium decreases, and it becomes incomplete to prevent the recording medium from rising.

  For this reason, as shown in Patent Document 1, a shutter mechanism that opens and closes a large number of suction holes in stages is provided on the back side of the platen on which a large number of suction holes are formed. A printer device that operates a shutter mechanism has been proposed.

JP 2002-205855 A

  In the invention disclosed in Patent Document 1, a flat shutter member disposed on the back side of the platen is configured to reciprocate by a cam mechanism. The platen suction hole and the suction hole formed in the shutter member are overlapped, and the opening area of the suction hole is adjusted according to the degree of the overlap.

  However, the above-described invention has a problem that air leakage tends to occur particularly when applied to a large printer. In order to suppress air leakage when the suction hole of the platen is closed by the shutter member (sliding member), it is necessary to bring the platen and the shutter member into close contact with each other. However, in a large printer, since the areas of the platen and the shutter member are large, the shutter member disposed on the back side of the platen is easily bent by its own weight, and it is not always easy to make them closely contact each other.

  In this way, in the case of a structure that is arranged on the pressure chamber side below the platen and closes the suction hole from the back side of the platen, the structure part that partitions the adsorption area is required to have rigidity and adhesion, so functionality and operability Is a trade-off.

  In addition, since the conventional shutter member is manufactured by processing a thin metal plate into a sheet metal, it is difficult to obtain a flatness as the size is large. If the flatness of the shutter member is low, the adhesion with the platen is deteriorated, and air leakage is likely to occur from the suction hole.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a recording apparatus that can reliably suck and hold a recording medium and can improve functionality and operability. To do.

  The recording apparatus of the present invention includes a recording processing unit that performs recording processing on a recording medium, and a medium support unit in which a plurality of first suction holes that penetrate from the medium supporting surface that supports the recording medium to the back surface are formed. A plurality of first suction portions each communicating with at least one of the first suction holes, and a second side of the plurality of first suction portions opposite to the medium support portion. A wall having a plurality of second suction holes that are disposed between the suction part, the plurality of first suction parts, and the second suction part to communicate the first suction part and the second suction part. A suction mechanism for sucking the recording medium disposed on the medium support surface through the first suction hole and the second suction hole, and an area smaller than the medium support surface, A method of conveying the recording medium while being arranged in parallel with the wall on the back side of the wall A slide member provided with a closing portion that can be translated along a direction intersecting with each other, has a different length in the direction of the parallel movement, and can selectively close the plurality of second suction holes. It is characterized by that.

  According to this, since the slide member disposed on the back surface side of the wall portion has a smaller area than the medium support surface, the slide member can be mounted even on the configuration placed on the back surface side of the wall portion. Due to its own weight, it becomes difficult to bend, and the blocking portion can be brought into close contact with the wall portion. For this reason, it is easy to ensure the adhesion of the blocking portion to the second suction hole, and air leakage from the suction hole to be blocked is prevented. Accordingly, the second suction hole provided in the wall portion can be selectively closed by the closing portion without deteriorating the functionality and operability as the slide member, and the recording medium can be blocked with respect to the medium support surface. Can be adsorbed and held. Thereby, the recording accuracy can be maintained.

Further, the plurality of blocking portions may be configured such that the lengths are sequentially different according to the position in the direction of the parallel movement.
According to this, since the plurality of second suction holes can be opened and closed stepwise according to the parallel movement amount of the slide member, the suction amount by the suction mechanism is variably controlled according to the width of the recording medium. be able to.

In addition, a plurality of partition portions that are arranged between the medium support portion and the wall portion and partition the plurality of first suction portions adjacent in the transport direction of the recording medium may be provided. Good.
According to this, since each 1st suction part is connected to at least 1 1st suction hole, the 2nd suction which makes the some 1st suction part and the 2nd suction part which were partitioned off by the partition part communicate with each other By selectively closing the hole, air leakage from the first suction hole located in the area where the recording medium does not exist is suppressed, and the other first suction hole located in the area where the recording medium exists is used. It is possible to prevent the adsorption force of the recording medium from being lowered. Accordingly, the side portions of the recording medium having different width dimensions can be attracted and held on the medium support surface.

Moreover, it is good also as a structure where the said obstruction | occlusion part is incorporated in the state elastically deformed toward the said wall part.
According to this, it is possible to ensure the closed state of the second suction hole by the closed portion.

Further, there may be a configuration in which a plurality of hole rows formed by the plurality of second suction holes arranged in the transport direction of the recording medium are provided in the transport direction, and a plurality of slide members are provided for each hole row. Good.
According to this, since the side portion of the recording medium placed on the medium support surface can be adsorbed over a wide range along the transport direction, the recording target area of the recording medium can be in a good posture. Can be held. Further, since the inside of the first suction part can be quickly made negative pressure through the plurality of second suction holes communicating with each first suction part, the recording medium placed on the medium support surface can be It is possible to quickly hold and hold the recording processing time.

1 is a side view illustrating a schematic configuration of an ink jet printer according to a first embodiment. FIG. 2 is a top view illustrating a schematic configuration of an inkjet printer. Sectional drawing which shows typically the structure of a suction mechanism, a shutter mechanism, and a wall part. The perspective view which shows the structure of a shutter mechanism and a wall part. Sectional drawing which shows typically the positional relationship of a shutter mechanism and a wall part. Sectional drawing which shows an effect | action at the time of driving the suction mechanism of a medium support table. (A) is a schematic sectional drawing which shows the initial position of a slide plate, (b) is a schematic sectional drawing which shows the case where a slide plate is moved only one step toward the X direction from the initial position. The top view which shows schematic structure of the shutter mechanism which concerns on 2nd Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In each drawing used for the following description, the scale of each member is appropriately changed to make each member a recognizable size.

[First Embodiment]
FIG. 1 is a side view illustrating a schematic configuration of the ink jet printer according to the present embodiment. FIG. 2 is a top view illustrating a schematic configuration of the ink jet printer 1. FIG. 3 is a cross-sectional view schematically showing the configuration of the suction mechanism, the shutter mechanism, and the wall portion.

As shown in FIG. 1, the ink jet printer (recording apparatus) 1 includes a feeding unit 10, a recording unit (recording processing unit) 20, and a discharge unit 40.
The feeding unit (medium transport unit) 10 is provided so that roll paper R, which is an example of a recording medium (supported medium), can be fed to the recording unit 20. Specifically, the roll medium holder 11 is provided, and the roll medium holder 11 holds the roll-shaped roll paper R. Then, by rotating the roll-shaped roll paper R, the roll paper R in a state where the roll state is released to the recording unit 20 on the downstream side in the conveyance direction (arrow direction of the Y axis) via the first roller 12. It is comprised so that it can feed.

The recording unit 20 is provided so that recording can be executed by ejecting ink, which is an example of a liquid, to the roll paper R sent from the feeding unit 10.
Specifically, the recording unit 20 includes a carriage 21, a recording head 22, a medium support table 24, a curl pressing unit 301, and the like.

The carriage 21 faces the medium support table 24 and is provided so as to be moved in the transport direction Y of the roll paper R by the power of a carriage motor (not shown) while being guided by a second guide shaft (not shown). ing.
FIG. 1 shows a state in which the carriage 21 is retracted from the medium support table 24 to the upstream side in the transport direction.

The recording head 22 is provided on the carriage 21 so as to be able to move integrally with the carriage 21 in the transport direction Y.
Further, the recording head 22 is configured to be able to move relative to the carriage 21 in the width direction X. Specifically, it is provided so that it can be moved in the width direction X by the power of a recording head motor (not shown) while being guided by a second guide shaft (not shown).

That is, the recording head 22 is configured to be able to move in the Y direction (sub-scanning direction) that is the transport direction and the X direction (main scanning direction) that is the width direction within a range facing the medium support table 24. ing.
Then, it is possible to perform recording on the roll paper R by ejecting ink from the nozzle row 23 provided on the surface of the recording head 22 facing the medium support table 24.

  The medium support table (medium adsorption support device) 24 is provided so that the roll paper R can be supported from the back side. The medium support table 24 includes a platen (medium support part) 25 having a medium support surface 25a (FIG. 2) for supporting the roll paper R, a plurality of pressure chambers (first suction parts) 27A, and a pressure chamber (second suction part). ) A pressure chamber forming body 45 that forms 27B, and a suction mechanism 28 that supplies a negative pressure to the pressure chambers 27A and 27B.

  As shown in FIG. 2, the platen 25 has, for example, a suction hole (first suction hole) 26 formed of a through hole having an inner diameter of about several millimeters over substantially the entire medium support surface 25a that supports the roll paper R. Is formed. Specifically, the suction hole 26 having an inner diameter of 2 to 3 mm has a Y direction that is a longitudinal direction of the platen 25 (a conveyance direction of the roll paper R) and an X direction that is a width direction (a width direction of the roll paper R). Each is formed in an array.

  As shown in FIG. 3, the pressure chamber forming body 45 has a so-called double floor structure having a wall portion 30 disposed in parallel with the inner side of the pressure chamber forming body 45 so as to be separated from the bottom portion. The platen 25 is also spaced apart from the platen 25. The pressure chamber forming body 45 includes a plurality of pressure chambers 27 </ b> A disposed on the back surface side of the platen 25, and a pressure disposed on the back surface side of the wall portion 30 on the side opposite to the platen 25 of the plurality of pressure chambers 27 </ b> A. Chamber 27B. A plurality of pressure chambers 27A are stacked on a relatively large pressure chamber 27B.

  Each pressure chamber 27 </ b> A (six in this embodiment) communicates with the outside through a plurality of suction holes 26 formed in the platen 25. Here, the number of suction holes 26 opened in each pressure chamber 27A may be one or plural. The plurality of pressure chambers 27 </ b> A are arranged in the short direction of the platen 25, i.e., the direction intersecting the transport direction of the roll paper R (paper width direction), and the pressure chambers 27 </ b> A adjacent in the same direction are partitioned by the partition portion 33. It has been.

  The plurality of partition portions 33 (five in the present embodiment) are plate members that extend in the long side direction of the pressure chamber forming body 45 (the conveyance direction of the roll paper R), and include the platen 25 and the wall portion 30. The plurality of suction holes 26 which are erected so as to connect each other and are formed in the platen 25 are arranged between the suction holes 26 adjacent in the paper width direction.

  A plurality of suction holes (second suction holes) 32 penetrating in the thickness direction of the wall part 30 are formed in the wall part 30. One suction hole 32 is formed for each pressure chamber 27 </ b> A, and the pressure chambers 27 </ b> A and the pressure chambers 27 </ b> B communicate with each other through the suction holes 32.

  In the present embodiment, corresponding to each pressure chamber 27 </ b> A, a hole row L configured by a plurality of suction holes 32 arranged in a direction intersecting the conveyance direction of the roll paper R (short direction of the wall portion 30) is a roll It is located near the center in the transport direction of the paper R (near the center in the longitudinal direction of the wall portion 30), and negative pressure can be efficiently supplied to each pressure chamber 27A extending in the same direction.

  The suction hole 32 is a long hole having a predetermined length along the longitudinal direction of the wall portion 30, and is formed in the vicinity of each partition portion 33. Here, the shape and number of the suction holes 32 in plan view and the position of the hole row L in the longitudinal direction of the wall portion 30 can be appropriately changed, and are not limited to those described above.

  The plurality of pressure chambers 27A are small sealed spaces having the platen 25 as the top surface and the wall portion 30 as the bottom surface, and the pressure chamber 27B is a large size having the bottom surfaces of the plurality of pressure chambers 27A, that is, the wall portion 30 as the top surface. It is a sealed space. The suction mechanism 28 is coupled to the pressure chamber forming body 45 so as to be connected to the bottom surface of the pressure chamber 27B (the bottom surface of the pressure chamber forming body 45). The suction mechanism 28 may be coupled to the pressure chamber forming body 45 so as to be connected to the side surface of the pressure chamber 27B.

  Inside the pressure chamber forming body 45, a shutter mechanism 50 capable of selectively opening and closing a large number of suction holes 32 formed in the wall portion 30 is provided. The configuration of the shutter mechanism 50 will be described later.

  The suction mechanism 28 sucks air inside the pressure chambers 27A and 27B that are in communication with each other through the suction hole 32 to make each space have a negative pressure. Specifically, the air inside the pressure chambers 27 </ b> A and 27 </ b> B is sucked by the axial fan 29. As a result, the outside air is sucked through the numerous suction holes 26 formed in the platen 25, and the roll paper R placed on the platen 25 is sucked and held on the medium support surface 25a.

As shown in FIGS. 2 and 3, the curl pressing unit 301 presses the side edge Ra of the roll paper R placed on the platen 25 toward the medium support surface 25 a, so that the side edge of the roll paper R is pressed. Ra is curled and separated from the platen 25 to prevent so-called lifting.
Specifically, the curl pressing portion 301 includes a curl pressing member 31 made of a pair of band-shaped films having flexibility and flexibility. Each curl pressing member 31 is disposed across the entire region in the same direction along the Y direction (the conveyance direction of the roll paper R) on both ends in the X direction of the platen 25 (both ends in the width direction of the roll paper R). .
The curl pressing member 31 has, for example, a thickness of 0.5 mm or less and a width of about 30 mm. Moreover, as a raw material, a polyimide etc. can be used, for example.

  Both ends (ends in the Y direction) of each curl pressing member 31 are connected to a curl pressing mounting portion 35, respectively. Each of the curl pressing attachment portions 35 is a member having substantially the same length as the width direction (X direction) of the platen 25, and has a width at a position separated from the end portion in the longitudinal direction (Y direction) of the platen 25. Along the direction, it is fixed to a base portion (not shown) of the ink jet printer 1.

Further, the curl pressing attachment portion 35 connects both ends of the curl pressing member 31 so as to be movable along the X direction. Thereby, each curl pressing member 31 is moved in the longitudinal direction (Y direction) of the platen 25 at an arbitrary position in the width direction (X direction) of the platen 25 by moving both ends thereof along the curl pressing mounting portion 35. Arranged in parallel.
Therefore, both ends in the width direction (X direction) of the roll paper R placed on the upper surface of the platen 25 can be pressed over the entire length direction (Y direction).

The discharge unit 40 illustrated in FIG. 1 includes a take-up roller 41 and is configured to take up the roll paper R sent from the recording unit 20 around the take-up roller 41.
The discharge unit 40 heats the roll paper R sent from the recording unit 20 or the tensioner that removes the bending of the roll paper R when the roll paper R sent from the recording unit 20 is taken up by the take-up roller 41. A drying unit for performing a drying process may be provided.

Next, the configuration of the shutter mechanism 50 provided on the medium support table 24 will be described in detail.
FIG. 4 is a perspective view showing the configuration of the shutter mechanism and the wall portion, and FIG. 5 is a top view showing the positional relationship between the shutter mechanism and the wall portion.

  As shown in FIGS. 4 and 5, as described above, the shutter mechanism 50 selectively selects a number of suction holes 32 formed in the platen 25 in accordance with the size change (change in the width dimension) of the roll paper R. The suction force can be selectively applied to a large number of suction holes 26 formed in the platen 25.

The shutter mechanism 50 includes a slide plate 52 disposed in parallel to the back side of the wall portion 30 and a plurality of closing portions 34 that can selectively close a plurality of suction holes 32 provided in the wall portion 30. Has been.
The slide plate 52 is a plate-like member having a rectangular shape in plan view having a length in the short direction of the platen 25, and has a plurality of blocking portions 34 (5 in the present embodiment) on the surface facing the back surface of the wall portion 30. Is provided. The plurality of blocking portions 34 are arranged at a predetermined interval from each other so as to correspond to the numerous suction holes 32 formed in the wall portion 30. That is, the blocking portions 34 arranged on the slide plate 52 are arranged in a row so as to overlap the suction holes 32 of the wall portion 30 in a top view.

  Here, since it is not necessary to close all the suction holes 32, the closing part 34 corresponding to one suction hole 32a (32) located on the outermost side of the hole row L may not be provided. As will be described in detail later, the closing portion 34 corresponding to the suction hole 32 farthest from the drawing direction (parallel movement direction) of the slide plate 52 may not be provided. Thereby, the roll paper R having a width dimension smaller than the maximum width dimension of the roll paper R that can be handled by the inkjet printer 1 of the present embodiment can be sucked and held.

  The slide plate 52 is configured to be capable of being manually or automatically translated in the X direction (the width direction of the platen 25 and the roll paper R) while being arranged in parallel with the wall portion 30. Specifically, the slide plate 52 can be moved in parallel in a stepwise manner in the + X direction at a predetermined interval (pitch). For example, parallel translation can be performed in steps of 6 mm intervals (pitch), and parallel to positions of 6 mm, 12 mm, 18 mm, 24 mm, 30 mm, etc. from the initial position shown in FIGS. 3 and 4 toward the X direction. It can be moved.

In the present embodiment, since the slide plate 52 is translated along the wall portion 30, it is preferable to make the thickness of the slide plate 52 about several mm in order to reduce the load at that time.
Further, the closing portion 34 preferably has a height (thickness) of about several millimeters, and is preferably made of an elastic member such as rubber, a sponge that hardly allows air to pass through, a resin material, or the like. . As will be described later, the suction hole 32 can be closed by moving the slide plate 52 in parallel and disposing the corresponding closing portions 34 on the arbitrary suction holes 32.

  The slide plate 52 is incorporated in the pressure chamber 27B in a state where the closing portion 34 is elastically deformed (compressed) toward the wall 30 side. For example, in the case of the blocking part 34 having a thickness of 12 mm, 50% of the thickness is crushed.

  Note that most of the slide plate 52 is substantially accommodated inside the pressure chamber 27B. However, since the slide plate 52 translates in the X direction along the wall portion 30, the side wall 45a of the pressure chamber forming body 45 is provided with an opening 45A through which a part (end portion) of the slide plate 52 is inserted. And one end of the slide plate 52 is disposed so as to protrude to the outside of the pressure chamber 27B (pressure chamber forming body 45).

  Specifically, an airtight mechanism (not shown) is provided in the opening 45A provided in the side wall 45a of the pressure chamber forming body 45 so that air does not leak. Then, the slide plate 52 is inserted into the pressure chamber 27B through the opening 45A, and the slide plate 52 is pulled out from the opening 45A, so that the slide plate 52 can be translated in the + X direction.

  The plurality of blocking portions 34 are formed in a rectangular shape in plan view along the short side direction in the X direction, and are formed to have a size that can cover the suction holes 32. In the present embodiment, the length (width) of each closing portion 34 along the moving direction (X direction) of the slide plate 52 is at the arrangement position of the closing portion 34 in the X direction (width direction of the platen 25 and the roll paper R). Depending on it.

  Specifically, the width W1 of the closing portion 34a (34) arranged on one side (−X direction side) of the slide plate 52 in the moving direction is formed longer than the width W0 of the suction hole 32. The closing portion 34b adjacent to the closing portion 34a in the X direction has a length in the + X direction with respect to the width W1 of the closing portion 34a. Furthermore, as it goes to the + X direction, the closing part 34c, the closing part 34d, and the closing part 34e are formed so that only the width dimension thereof becomes longer in steps in the + X direction, and the closing parts 34a to 34e The width has a relationship of W1 <W2 <W3 <W4 <W5.

  On the other hand, the length L1 in the long side direction (Y direction) of the plurality of blocking portions 34 is constant and is formed to be longer than the length L2 of the suction hole 32. In this way, the respective suction portions 32 can be closed by the respective closed portions 34.

  In addition, the inner peripheral edge of each suction hole 32 is chamfered. In particular, the inner peripheral edge of the suction hole 32 on the pressure chamber 27B side contacts and rubs against the closing portion 34, and therefore it is preferable to perform various low friction processes in addition to the chamfering process.

  Note that the number, shape, and the like of the suction holes 32 and the blocking portions 34 are not limited to those illustrated, and can be changed as appropriate.

Next, the operation of the shutter mechanism 50 having the above configuration will be described.
In the state shown in FIG. 3, that is, in the initial state of the shutter mechanism 50 (the initial position of the slide plate 52), all of the plurality of suction holes 32 formed in the wall portion 30 are open. The pressure chambers 27A and 27B communicate with each other.

  In this initial state, the suction mechanism 28 connected to the pressure chamber 27B of the medium support table 24 is driven to rotate the axial fan 29 so that the pressure chamber 27B has a negative pressure. Then, the inside of the pressure chamber 27 </ b> A becomes a negative pressure through each suction hole 32 of the wall portion 30, and the air on the medium support surface 25 a of the platen 25 (all the suction holes 26 formed in the platen 25 ( Outside air) is aspirated. Thereby, the roll paper R can be adsorbed and held on the medium support surface 25a.

More specifically, it operates as described below.
FIG. 6 is a cross-sectional view showing the operation when the suction mechanism of the medium support table 24 is driven.
5 and 6, the width dimension (length in the X direction) of the roll paper (recording medium) R1 is substantially the same as the width dimension of the platen 25. FIG.

As shown in FIG. 6A, in the state where the roll paper R is fed onto the platen 25, the operator aligns the position of the curl pressing member 31 in the X direction with the position facing the side edge Ra of the roll paper R1, The curl pressing member 31 is placed on each side edge Ra of the roll paper R1.
At this time, the outer end E1 of the curl pressing member 31 is disposed so as to be positioned outside the side end Ra of the roll paper R1, and is brought into contact with the platen 25. On the other hand, the inner end E2 of the curl pressing member 31 is disposed so as to be located on the inner side of the side end Ra of the roll paper R, and is brought into contact with the side end Ra of the roll paper R1.

  Since a force for pressing the roll paper R1 toward the platen 25 is acting on the pair of curl pressing members 31, the outer ends E1 of the pair of curl pressing members 31 can be brought into at least line contact with the platen 25, and The inner ends E2 of the pair of curl pressing members 31 can be brought into contact with the side ends Ra of the roll paper R.

  As described above, the plurality of suction holes 26 are provided in the medium support surface 25a of the platen 25 at least in a region facing the side edge Ra of the roll paper R1 and the curl pressing member 31. Therefore, by driving the suction mechanism 28, the air in the space A surrounded by the platen 25, the roll paper R 1, and the curl pressing member 31 is sucked through the suction hole 26.

  Therefore, as shown in FIG. 6B, the roll paper R <b> 1 and the pair of curl pressing members 31 are in close contact with the platen 25 and are sucked and held by the medium support table 24. In this way, the roll paper R1 can be sucked and held in a planar state along the medium support surface 25a of the platen 25.

Next, instead of the roll paper R1, a case where a roll paper (recording medium) R2 having a narrower width than the roll paper R1 is sucked and held on the medium support table 24 will be described.
7A is a schematic cross-sectional view showing the initial position of the slide plate 52, and FIG. 7B is a schematic cross-sectional view showing a case where the slide plate 52 is moved from the initial position in the X direction by one step.
For example, the width dimension of the roll paper R2 is narrower than the roll paper R1 by the arrangement pitch (1 pitch) of the suction holes 26 in the X direction. When the roll paper R2 is placed on the medium support surface 25a of the platen 25, it is placed by so-called one-end alignment (end reference).

  When the width dimension of the roll paper R2 placed on the platen 25 is narrower than that of the roll paper R1, the operator moves the slide plate 52 from the initial position (FIG. 5) to the + X direction before driving the suction mechanism 28. Move towards parallel. In the case of the roll paper R2, the width dimension is narrower than the roll paper R1 by the arrangement pitch of the suction holes 26 in the X direction (one pitch), so the slide plate 52 is moved from the initial position by one step toward the + X direction. .

As described above, at the initial position of the shutter mechanism 50 (the initial position of the slide plate 52), all the suction holes 32 provided in the wall 30 are open. When the slide plate 52 is moved from the initial position by a predetermined distance in the + X direction, as shown in FIG. 7A, the slide plate 52 among the plurality of closing portions 34 provided on the slide plate 52 is used. The closing portion 34e is opposed to the suction hole 32a located on the outermost side in the moving direction (X direction), and the opening is closed so that a part of the blocking portion 3e enters the suction hole 32a. 27 '(27) is shut off from the pressure chamber 27B. The plurality of suction holes 32 located in the area where the roll paper R2 is present are opened, and the pressure chambers 27A and the pressure chambers 27B communicate with each other through the five suction holes 32 in the open state.
Simultaneously with the movement of the slide plate 52 in the + X direction, one of the curl pressing members 31 is moved in the −X direction so as to be aligned with the position facing the side edge Ra of the roll paper R2.

  Then, by driving the suction mechanism 28 in the above-described state, the roll paper R <b> 2 is attracted and held on the medium support surface 25 a of the platen 25 as shown in FIG. 7B.

  At this time, among the many suction holes 26 formed in the platen 25, the roll paper R2 and the curl pressing member 31 are not present above the suction holes 26 arranged in the + X direction. For this reason, in the conventional medium support table 24, when the suction mechanism 28 is driven, the outside air is always sucked from the suction holes 26 located in the area where the roll paper R2 does not exist. In some cases, the suction force of the suction holes 26 is reduced, and the roll paper R2 cannot be sufficiently sucked and held on the platen 25.

On the other hand, in the medium support table 24 according to the present embodiment, the outermost suction hole 32a is blocked by the blocking portion 34e by moving the slide plate 52 in the + X direction. Almost no outside air is sucked from the suction holes 26 corresponding to the suction holes 32a.
Therefore, the suction force of the other plurality of suction holes 26 located in the area where the roll paper R2 exists is not reduced. Thereby, even in the case of the roll paper R2 having a narrower width than the roll paper R1, it can be held by suction on the medium support surface 25a of the platen 25 with substantially the same suction force as in the case of the roll paper R1.

Further, when a roll paper or the like having a narrower width dimension (shorter in the X direction) than the roll papers R1 and R2 is sucked and held on the platen 25, the operator selects the slide plate 52 and curl according to the width dimension. The pressing member 31 is translated in the X direction.
As described above, even when the roll paper R (R2) having different width dimensions is adsorbed, the suction hole 32 located in the area where the roll paper R does not exist is closed, which is substantially the same as the case of the roll paper R1. Can be maintained, and the roll paper R2 can be satisfactorily adsorbed and held on the medium support surface 25a of the platen 25.

As described above, according to the inkjet printer 1 according to the present embodiment, the wall portion provided on the back side of the platen 25 and disposed between the plurality of pressure chambers 27A and the corresponding pressure chambers 27B. In a state where all the suction holes 32 of 30 are opened, the roll paper R1 can be sucked and held by sucking outside air from all the suction holes 26.
And when it replaces with roll paper (for example, roll paper R2) from which a width dimension differs, the suction hole in which roll paper R2 is not mounted is moved by moving the slide board 52 in parallel with respect to the wall part 30. The suction hole 32 corresponding to 26 is selectively closed by the closing portion 34, and suction is performed in this state. As a result, it is possible to suck and hold the roll paper R2 by sucking the going from the suction holes 26 corresponding to the area where the roll paper R2 exists.

For example, in the case where there is one suction mechanism 28, there is a problem in that the suction force with respect to the roll paper R2 is reduced unless the region where the suction force is generated is controlled according to the width dimension of the roll paper R.
On the other hand, according to the configuration of the present embodiment, by selectively closing the suction hole 32 located in the area where the roll paper R2 does not exist, the platen 25 is placed on the platen 25 via the corresponding suction hole 26. Air cannot be sucked. For this reason, it is possible to effectively apply a suction force to the suction holes 26 located in the region where the roll paper R2 exists. Accordingly, a sufficient suction force with respect to the roll paper R2 can be obtained, so even the roll paper R2 having a different width dimension can be reliably sucked and held on the medium support surface 25a.

  Further, the size of the slide plate 52 in plan view is much smaller than that of the platen 25. For this reason, even if it is the structure arrange | positioned at the back surface side of the wall part 30, the slide plate 52 becomes difficult to bend by own weight, and the obstruction | occlusion part 34 can be stuck to the wall part 30. FIG. For this reason, it is easy to ensure the obstruction | occlusion property of the obstruction | occlusion part 34 with respect to the suction hole 32, and the air leak from the suction hole 32 which should be obstruct | occluded is prevented. Thus, the roll paper R can be sucked and held by selectively closing the suction hole 32 provided in the wall portion 30 by the closing portion 34 without deteriorating the functionality and operability as the shutter mechanism 50. it can.

  Further, since the parallel movement direction of the slide plate 52 coincides with the width direction of the roll paper R, the suction holes 32 can be selectively opened and closed according to the change in the width dimension of the roll paper R. That is, the lengths of the plurality of blocking portions 34 (34a to 34e) arranged in the moving direction of the slide plate 52 are sequentially different in accordance with the arrangement positions in the moving direction of the slide plate 52. The plurality of suction holes 32 can be opened and closed stepwise and selectively according to the amount of movement. Therefore, the suction amount (output) by the suction mechanism 28 can be variably controlled in accordance with the width dimension of the roll paper R.

  Furthermore, the moving distance of the slide plate 52 can be minimized by changing the extending length of the blocking portion 34 stepwise along the moving direction of the slide plate 52. For this reason, the installation area of the apparatus can be minimized.

  Further, by performing a process for reducing friction with the closing portion 34 of the slide plate 52, such as chamfering the inner peripheral surface of the suction hole 32, air leakage at the time of closing the suction hole 32 is suppressed for a long period of time. be able to.

Further, these frictional resistances may be reduced by applying a scientific treatment to the surface of the blocking portion 34 or the upper surface of the wall portion 30.
Further, even if one suction hole 26 communicates with one pressure chamber 27A, a plurality of suction holes 26 may communicate with one pressure chamber 27A.

The slide plate 52 is manufactured by sheet metal processing of a thin metal plate.
The slide plate 52 of the present embodiment is configured to be smaller and more difficult to bend than the conventional one. Further, since each of the closed portions 34 is compressed to about half from the thickness before being incorporated in the pressure chamber forming body 45, a part of the closed portions 34 are placed in the suction holes 32 when arranged opposite to the suction holes 32. The suction hole 32 is closed by being slightly elastically restored so as to enter.
For this reason, even if the flatness of the slide plate 52 is low, it can be said that the influence on the blocking effect is small. Therefore, with the configuration of the present embodiment, it is difficult for problems such as air leakage due to processing accuracy by sheet metal to occur.

[Second Embodiment]
Next, the configuration of the recording apparatus according to the second embodiment will be described focusing on the configuration of the shutter mechanism 60.
In the previous embodiment, one suction hole 32 was provided for each pressure chamber 27A. However, in this embodiment, a plurality of suction holes 32 are provided for one pressure chamber 27A. A shutter mechanism 60 including a plurality of slide plates 52 is provided in accordance with the increase in the suction holes 32.

FIG. 8 is a plan view showing a schematic configuration of the shutter mechanism 60.
As shown in FIG. 8, a plurality of hole arrays L including a plurality of suction holes 32 are formed in the wall portion 30 of the present embodiment along the longitudinal direction of the wall portion 30. In the present embodiment, four hole rows L are provided, but the present invention is not limited to this. In addition, a plurality of (four) slide plates 52 corresponding to each hole row L are provided on the back side of the wall portion 30, and these are partially connected by a connecting member (not shown). Thus, the slide plates 52 can be simultaneously moved in the slide direction. For example, it is good also as a structure by which the one end sides of the slide plate 52 which protrudes outside from the pressure chamber formation body 45 of the slide plate 52 were connected.

  In this way, by increasing the number of suction holes 32 communicating with one pressure chamber 27, the suction mechanism 28 can quickly reduce the pressure chamber 27 to a negative pressure, so that it is placed on the platen 25. The rolled paper R can be quickly adsorbed and the printing process can be started immediately. Therefore, the recording processing time is shortened.

  Further, since the side portion of the roll paper R placed on the medium support surface 25a of the platen 25 can be adsorbed over a wide range along the transport direction, the print target area of the roll paper R can be placed in a good posture. Can be held in. Thereby, printing accuracy can be improved.

  As described above, the preferred embodiments according to the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the examples. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

In the above-described embodiment, an ink jet printer has been described as an example of the recording apparatus. However, the recording apparatus is not limited to the ink jet printer, and may be an apparatus such as a copying machine or a facsimile.
In the above-described embodiment, the roll paper R is described as an example of the recording medium, but a cut sheet or a film material may be used.

  Further, the number of axial fans 29 of the suction mechanism 28 is not limited to one, and a plurality of axial fans 29 may be provided.

  In the above-described embodiment, an example of an inkjet printer (liquid ejecting apparatus) that ejects a liquid such as ink has been described as the recording apparatus. However, liquid other than ink is ejected or ejected. It can be applied to a liquid ejecting apparatus. The liquid that can be ejected by the liquid ejecting apparatus includes a liquid state in which particles of the functional material are dispersed or dissolved and a gel-like flow state.

  In the above-described embodiment, as the liquid ejected from the recording apparatus (liquid ejecting apparatus), not only ink but also a liquid corresponding to a specific application can be applied. By providing the liquid ejecting apparatus with an ejecting head capable of ejecting a liquid corresponding to the specific application, ejecting the liquid corresponding to the specific application from the ejecting head, and attaching the liquid to a predetermined object, A given device can be manufactured. For example, a liquid ejecting apparatus disperses (dissolves) a material such as an electrode material and a color material used in manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display (FED) in a predetermined dispersion medium (solvent). It is applicable to a liquid ejecting apparatus that ejects a liquid (liquid material).

In addition, the fluid ejecting apparatus may be a liquid ejecting apparatus that ejects a bio-organic matter used for biochip manufacturing, or a liquid ejecting apparatus that ejects a liquid that is used as a precision pipette as a sample.
In addition, transparent resin liquids such as UV curable resin to form liquid injection devices that pinpoint lubricant oil onto precision machines such as watches and cameras, and micro hemispherical lenses (optical lenses) used in optical communication elements. May be a liquid ejecting apparatus that ejects a liquid onto the substrate, a liquid ejecting apparatus that ejects an etching solution such as acid or alkali to etch the substrate, or a fluid ejecting apparatus that ejects gel. The present invention can be applied to any one of these liquid ejecting apparatuses.

  DESCRIPTION OF SYMBOLS 1 ... Inkjet printer (recording apparatus), L ... Hole row | line | column, Y ... Conveyance direction, 20 ... Recording part (recording process part), 25 ... Platen (medium support part), 25a ... Medium support surface, 26, 32, 32a ... Suction hole 26 ... Suction hole (first suction hole), 27A ... Pressure chamber (first suction part), 27B ... Pressure chamber (second suction part), 28 ... Suction mechanism, 30 ... Wall part, 31 ... Curl presser Member 32 ... Suction hole (second suction hole) 33 ... Partition part 34, 34a, 34b, 34c, 34d, 34e ... Closed part, L1, L2 ... Length, R1, R2 ... Roll paper (recording medium) )

Claims (5)

A recording processing unit that performs recording processing on the recording medium;
A medium support portion in which a plurality of first suction holes penetrating from the medium support surface supporting the recording medium to the back surface are formed;
A plurality of first suction portions each communicating with at least one first suction hole on the back surface side;
A second suction unit disposed on the opposite side of the plurality of first suction units from the medium support unit;
A wall portion formed between the plurality of first suction portions and the second suction portion, and formed with a plurality of second suction holes for communicating each of the first suction portions and the second suction portion;
A suction mechanism for sucking the recording medium disposed on the medium support surface through the first suction hole and the second suction hole;
Having an area smaller than the medium support surface, arranged parallel to the wall portion on the back surface side of the wall portion, and capable of parallel movement along a direction intersecting a conveyance direction of the recording medium, A recording apparatus comprising: a slide member having a different length in a parallel movement direction and provided with a closing portion capable of selectively closing the plurality of second suction holes. The recording apparatus according to claim 1, wherein the plurality of blocking portions are sequentially different in length according to a position in the parallel movement direction. A plurality of partition portions that are disposed between the medium support portion and the wall portion and partition the plurality of first suction portions adjacent to each other in the transport direction of the recording medium are provided. The recording apparatus according to claim 1 or 2. The recording apparatus according to claim 1, wherein the closing portion is incorporated in a state of being elastically deformed toward the wall portion. A plurality of hole rows formed by a plurality of the second suction holes arranged in a direction intersecting a conveyance direction of the recording medium are provided in the conveyance direction, and a plurality of slide members are provided for each of the hole rows; The recording apparatus according to claim 1, wherein:

Images