JP2012192690A - Recording apparatus - Google Patents

Recording apparatus Download PDF

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Publication number
JP2012192690A
JP2012192690A JP2011059709A JP2011059709A JP2012192690A JP 2012192690 A JP2012192690 A JP 2012192690A JP 2011059709 A JP2011059709 A JP 2011059709A JP 2011059709 A JP2011059709 A JP 2011059709A JP 2012192690 A JP2012192690 A JP 2012192690A
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Japan
Prior art keywords
suction
recording
roll paper
platen
suction holes
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Granted
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JP2011059709A
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Japanese (ja)
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JP5772108B2 (en
Inventor
Jun Yamada
Akihiro Toya
山田  純
昭寛 戸谷
Original Assignee
Seiko Epson Corp
セイコーエプソン株式会社
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Application filed by Seiko Epson Corp, セイコーエプソン株式会社 filed Critical Seiko Epson Corp
Priority to JP2011059709A priority Critical patent/JP5772108B2/en
Priority claimed from CN201210072021.5A external-priority patent/CN102673141B/en
Publication of JP2012192690A publication Critical patent/JP2012192690A/en
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Publication of JP5772108B2 publication Critical patent/JP5772108B2/en
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Abstract

PROBLEM TO BE SOLVED: To provide a recording apparatus that can reliably suction and hold a medium to be recorded and improve functionality and operability.SOLUTION: The recording apparatus includes: a platen 25 in which a plurality of suction holes 26 passing through from a medium support surface 25a to a rear surface are formed; pressure chambers 27A provided for each of the suction holes 26 in a one for one manner on the rear surface side while communicating with the suction holes 26; a pressure chamber 27B disposed on the side opposite to the platen 25 of the plurality of pressure chambers 27A and communicating with the plurality of pressure chambers 27A; a wall section 30 which is disposed between the pressure chambers 27A and the pressure chamber 27B and in which a plurality of suction holes 32 each making the pressure chambers 27A and the pressure chamber 27B communicate with each other are formed; a suction mechanism 28 which suctions rolled paper R disposed on the medium support surface 25a through the suction holes 26 and the suction holes 32; and a slide plate 52 movable in a parallel fashion along the wall section 30 on the pressure chambers 27A side and provided with a plurality of blocking portions 34 having different lengths in a direction of parallel movement and capable of blocking the 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. Then, the suction hole of the platen and the through hole formed in the shutter member are overlapped, and the opening area of the suction hole is adjusted according to the degree of 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, 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 bring them into close contact with each other.
  In addition, by providing a sheet that covers the surface of the platen, the area to be sucked is limited according to the width of the recording medium, and the area where no recording medium is present is blocked from the surface side of the platen, thereby sucking the recording medium. The structure which suppresses the fall of the adsorption | suction power to suppress as much as possible is also disclosed.
  However, since a sheet covering the surface of the platen is arranged, the risk of collision with the recording head must be avoided. Also, 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 that functionality and operability are It becomes a trade-off.
  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 according to the present invention includes 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, and a recording processing portion that performs a recording process on the recording medium And a plurality of first suction portions provided on the back surface side and communicating with the plurality of first suction holes, and a second suction disposed on the opposite side of the plurality of first suction portions from the medium support portion. And a wall part formed between the first suction part and the second suction part, and formed with a plurality of second suction holes for communicating each 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 the wall disposed on the wall portion on the first suction portion side. And a plurality of second suctions having different lengths in the direction of the parallel movement. A slide member which selectively closable plurality of occlusion is provided with, characterized in that it comprises a.
  According to this, when the second suction hole is not closed by the closing portion, air (outside air) on the medium support surface can be sucked through the first suction hole and the first suction portion. When the slide member is translated along the wall portion, the second suction hole is closed by the closing portion, and air leakage from the second suction hole is suppressed. That is, by selectively closing the second suction hole located in the area where the recording medium does not exist, air on the medium support surface cannot be sucked through the corresponding first suction hole. The suction action effectively acts on the other first suction holes. As a result, the recording medium can be reliably sucked and held on the medium support surface without deteriorating the functionality and operability.
Further, the plurality of blocking portions may be configured such that their lengths are sequentially different according to the position in the parallel movement direction.
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 may be provided that are disposed between the medium support portion and the wall portion and partition the first suction portions adjacent in the transport direction of the recording medium.
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 provided with the urging | biasing part which urges | biases the said obstruction | occlusion part to the said wall part side.
According to this, since the sliding part is always urged | biased by the urging | biasing part to the wall part side, the obstruction | occlusion state of a 2nd suction hole can be hold | maintained.
Moreover, it is good also as a structure which at least the said obstruction | occlusion part consists of elastic members.
According to this, since at least the closing part is made of an elastic member, the closing state of the second suction hole can be more reliably maintained by elastically deforming the slide part so as to enter the second suction hole. .
1 is a side view showing a schematic configuration of an ink jet printer according to an embodiment. FIG. 2 is a top view illustrating a schematic configuration of an inkjet printer. (A) is sectional drawing which shows typically the structure of a suction mechanism and a shutter mechanism, (b) is a fragmentary sectional view which expands and shows the principal part of a shutter mechanism. The side view which shows the structure of a partition part typically. The top view which shows typically the positional relationship of a shutter mechanism and a wall part. FIG. 4 is a schematic front cross-sectional view showing an operation when a suction mechanism of a medium support table is driven. (A), (b) is a schematic sectional drawing which shows the case where a slide board is moved only one step toward the X direction from the initial position. Sectional drawing which shows the modification of an obstruction | occlusion part. It is sectional drawing which shows typically the structure of the shutter mechanism which concerns on other 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.
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.
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 (recording medium) R, which is an example of a recording 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 as to perform recording 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 portion) 25 having a medium support surface 25a that supports the roll paper R, a pressure chamber forming body 45 that forms a plurality of pressure chambers 27A and pressure chambers 27B, and the pressure chamber 27A. , 27B and a suction mechanism 28 for supplying a negative pressure.
  As shown in FIGS. 1 and 2, the platen 25 has, for example, a suction hole (first suction hole) 26 formed of a through hole having an inner diameter of several millimeters, which is an abbreviation of the medium support surface 25a that supports the roll paper R. It is formed throughout. Specifically, the suction holes 26 having an inner diameter of 2 to 3 mm are arranged in the Y direction (the conveyance direction of the roll paper R) that is the longitudinal direction of the platen 25 and the X direction (the width direction of the roll paper R) that is the width direction. , Each is formed as an array.
  The pressure chamber forming body 45 has a so-called double floor structure having a wall portion 30 disposed in parallel to the platen 25 so as to be separated from the platen 25, and is disposed on the back surface side of the platen 25. The pressure chamber forming body 45 includes a plurality of pressure chambers (first suction portions) 27A, and a pressure chamber (second suction portion) disposed below the plurality of pressure chambers 27A and on the back side of the wall portion 30. 27B, and a plurality of pressure chambers 27A are stacked on a pressure chamber 27B that is relatively large with respect to the pressure chamber 27A.
  The plurality of pressure chambers 27 </ b> A are arranged in a direction (paper width direction) intersecting with the conveyance direction of the roll paper R, and the pressure chambers 27 </ b> A adjacent in the same direction are arranged between the platen 25 and the wall portion 30. Moreover, it is partitioned off by the partition part 33 connected to both sides.
  The partition portion 33 partitions a space formed between the platen 25 and the wall portion 30, and a plurality of the partition portions 33 are provided on the wall portion 30. The plurality of partition portions 33 are arranged at predetermined intervals along the width direction of the roll paper R, and the upper end sides thereof are connected to the back surface of the platen 25. The plurality of partition portions 33 may be formed integrally with the wall portion 30 or may be provided separately from the wall portion 30.
  The partition portion 33 is a plate member extending in the transport direction of the roll paper R, and is positioned between the suction holes 26 adjacent in the paper width direction among the many suction holes 26 formed in the platen 25. Has been placed.
  The plurality of pressure chambers 27 </ b> A communicate with the pressure chamber 27 </ b> B through a plurality of suction holes (second suction holes) 32 formed in the wall portion 30. The suction holes 32 are formed one-to-one with the suction holes 26 formed in the platen 25, and are provided on the bottom surface corresponding to each pressure chamber 27A. The pressure chambers 27 </ b> A and the spaces in the pressure chambers 27 </ b> B communicate with each other through these suction holes 32.
  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 wall 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. Thereby, 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.
The curl pressing unit 301 presses the side end Ra of the roll paper R placed on the platen 25 toward the medium support surface 25a, whereby the side end Ra of the roll paper R is curled and separated from the platen 25. In other words, so-called lifting is prevented.
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 over the entire area in the Y 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 is spaced apart from the end portion in the longitudinal direction (Y direction) of the platen 25 in the width direction. Are fixed to a base portion (not shown) of the ink jet printer 1 along the line.
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 has 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.
3A is a cross-sectional view schematically showing the configuration of the suction mechanism and the shutter mechanism, FIG. 3B is a partial cross-sectional view showing an enlarged main part of the shutter mechanism, and FIG. It is a side view which shows a structure typically. FIG. 5 is a plan view schematically showing the positional relationship between the shutter mechanism and the wall portion.
  As described above, the shutter mechanism 50 can selectively open and close the many suction holes 32 formed in the wall portion 30 in accordance with the size change (change in width dimension) of the roll paper R. A negative pressure is selectively supplied to a large number of suction holes 26 formed in 25 to cause the suction force to act.
  As shown in FIGS. 3A and 3B, the shutter mechanism 50 includes a slide plate (slide member) 52 that is spaced apart from and parallel to the back surface of the platen 25, and the thickness of the wall portion 30. It comprises a suction hole 32 penetrating in the vertical direction, a blocking portion 34 provided one-on-one, and an urging portion 36.
(Planar shape of slide plate)
On the slide plate 52, a large number of blocking portions 34 are formed at positions corresponding to the numerous suction holes 32 formed in the wall portion 30. That is, as shown in FIG. 5, when the slide plate 52 and the wall portion 30 are viewed from above in the initial state, the blocking portion 34 disposed on the slide plate 52 overlaps the suction hole 32 of the wall portion 30 on a one-to-one basis. They are arranged in rows.
  The slide plate 52 is configured to be movable in parallel in the X direction (the width direction of the platen 25 and the roll paper R) manually or automatically while being separated from the back surface of the platen 25 and arranged in parallel. Has been. 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, 6 mm, 12 mm, 18 mm, 24 mm, 30 mm, etc. from the initial position shown in FIG. 3A and FIG. 5 toward the X direction can be moved in parallel at intervals of 6 mm (pitch). The position can be translated.
  In the present embodiment, since the slide plate 52 is moved in parallel, it is preferable that the thickness of the slide plate 52 be about several mm in order to reduce the load at that time. Further, as the material of the slide plate 52, stainless steel or the like is suitable. Such a slide plate 52 is always urged toward the wall 30 by the urging portion 36 provided on the front surface side. The urging portion 36 is configured by an elastic member such as a leaf spring or a coil member, and one or more urging portions 36 are provided on the upper surface side of the slide plate 52.
  The closing portion 34 preferably has a height (thickness) of about several mm, 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 holes 32 can be selectively closed by moving the slide plate 52 in parallel to dispose the closing portions 34 corresponding to the predetermined suction holes 32. Here, since the slide plate 52 is always urged toward the wall portion 30 by the urging portion 36, the flexible closing portion 34 disposed on the suction hole 32 is placed in the suction hole 32. It is elastically deformed so as to enter, and the closed state of the suction hole 32 can be maintained.
  Note that most of the shutter mechanism 50 is substantially accommodated in the plurality of pressure chambers 27A. However, since the slide plate 52 translates in the X direction along the platen 25, each partition portion 33 arranged in one direction is provided with an opening 33a through which the slide plate 52 and the closing portion 34 are inserted. Yes. Furthermore, an opening 45a is also provided in the side wall of the pressure chamber 27A ′ (pressure chamber 27A) located on the outermost side in the moving direction (+ X direction) of the slide plate 52, that is, the side wall 45A of the pressure chamber forming body 45, One end of the plate 52 is disposed so as to protrude outside the pressure chamber forming body 45.
  Specifically, the opening 33a (FIG. 4) provided in the plurality of partition portions 33 and the opening 45a provided in the side wall 45A of the pressure chamber forming body 45 are not shown so as not to leak air. An airtight mechanism is provided. Then, the slide plate 52 can be translated in the + X direction by inserting the slide plate 52 from the opening 45a of the pressure chamber forming body 45 into the opening 33a of each partition 33 and pulling out the slide plate 52 from the opening 45a. It is configured as follows.
The plurality of blocking portions 34 are formed in an oval shape or a rectangular shape along the X direction. The length of each closing portion 34 in the extending direction differs depending on the arrangement position of the closing portion 34 in the X direction (the width direction of the platen 25 and the roll paper R).
Specifically, the closing part 34a (closing part 34) disposed on one side (−X direction side) in the moving direction of the slide plate 52 is formed in a substantially circular shape in plan view. The closing portion 34b adjacent to the closing portion 34a in the X direction is formed in an oval shape extending in the + X direction. Furthermore, as it goes in the + X direction, the closing portion 34c, the closing portion 34d, the closing portion 34e, the closing portion f, the closing portion 34e, etc. are formed so that only the major axis dimension is gradually increased in the + X direction. ing.
For example, when the major axis dimension of the blocking part 34a is 6 mm, the major axis dimension of the blocking part 34b is 12 mm, the major axis dimension of the blocking part 34c is 18 mm, the major axis dimension of the blocking part 34d is 24 mm, and the blocking part 34e The major axis dimension is 30 mm, the major axis dimension of the blocking portion 34g is 34 mm, etc.
  On the other hand, the length in the width direction (Y direction) of the plurality of blocking portions 34 is constant, for example, 6 mm. The length in the width direction is formed to be larger than the diameter (4 mm) of the suction hole 32. This is because, as will be described later, the corresponding suction holes 32 are closed by the respective closed portions 34.
  Further, the inner peripheral edge of each suction hole 32 is chamfered. In particular, since the inner peripheral edge of the suction hole 32 on the pressure chamber 27A side contacts and rubs against the closing portion 34 as will be described later, 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.
Next, the operation of the shutter mechanism 50 having the above configuration will be described.
In the state shown in FIGS. 3A and 5, that is, in the initial state of the shutter mechanism 50 (the initial position of the slide plate 52), the plurality of suction holes 32 formed in the wall portion 30 are all open. The pressure chambers 27 </ b> A and 27 </ b> B communicate with each other through the plurality of suction holes 32.
  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 negative through the suction holes 32 of the wall 30, and the air (outside air) on the upper surface side of the medium support table 24 is passed through all the suction holes 26 formed in the platen 25. ) Is aspirated. Thereby, the roll paper R placed on the upper surface of the medium support table 24 (medium support surface 25a of the platen 25) can be sucked and held on the medium support surface 25a of the platen 25.
More specifically, it operates as described below.
FIG. 6 is a schematic front sectional view showing an operation when the suction mechanism of the medium support table is driven.
3A and 6, the width dimension (length in the X direction) of the roll paper (recording medium) R <b> 1 is substantially the same as the width dimension of the platen 25.
As shown in FIG. 3A, in a state where the roll paper R is fed onto the platen 25, the operator positions the pair of curl pressing members 31 in the X direction so as to face the side edge Ra of the roll paper R1. In addition, 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 the 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 at least in line contact with the platen 25, and The inner end E2 of the curl pressing member 31 can be brought into contact with the side end 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 end 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. 6, the roll paper R <b> 1 and the pair of curl pressing members 31 are in close contact with the platen 25. That is, it is in a state of being 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 (the upper surface of the medium support table 24).
Next, instead of the roll paper R1, a case where a roll paper (recording medium) R2 having a narrower width dimension (a shorter length in the X direction) than the roll paper R1 is sucked and held on the medium support table 24 will be described.
FIGS. 7A and 7B are schematic cross-sectional views showing a case where the slide plate 52 is moved by one step from the initial position in the X direction.
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, the roll paper R2 is placed by so-called one-side alignment (edge 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 to the initial position (see FIG. 3A) before driving the suction mechanism 28. ) To + X direction.
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 to the + X direction by one step (6 mm). Just move.
As described above, in the initial state of the shutter mechanism 50 (the initial position of the slide plate 52), all the suction holes 32 provided in the wall portion 30 are open.
From this initial state, when the slide plate 52 is moved by 6 mm in the + X direction, as shown in FIG. 7A, the closing portion 34g provided on the slide plate 52 faces the suction hole 32g, and the biasing force is applied. Due to the urging force of the portion 36, the opening is closed so that a part thereof enters the suction hole 32g.
In this way, the suction hole 32g is closed by the closing portion 34g. Therefore, even if the suction mechanism 28 is driven, air in the pressure chamber 27A ′ is not sucked through the suction hole 32g, and as a result, outside air is sucked through the suction hole 26 of the platen 25 communicating with the pressure chamber 27A ′. Can not do.
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, the roll paper R2 is sucked and held on the medium support table 24 as shown in FIG. 7B.
At this time, the roll paper R2 and the curl pressing member 31 do not exist above the suction holes 26g arranged in the + X direction among the many suction holes 26 formed in the platen 25. 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 26g, so that the suction force of the other suction holes 26b to 26f is reduced, and the roll paper R2 May not be sufficiently adsorbed and held on the medium support table 24.
  On the other hand, in the medium support table 24 in the present embodiment, the outermost suction hole 32g is closed by the closing portion 34g by moving the slide plate 52 in the + X direction. The outside air is hardly sucked from. Accordingly, the suction force of the other suction holes 26 (26a to 26f) is not reduced. Thus, even in the case of the roll paper R2 having a width smaller than that of the roll paper R1, the upper surface of the medium support table 24 (medium support surface 25a of the platen 25) with substantially the same suction force as that of the roll paper R1. Can be adsorbed and retained.
  Further, when a roll paper or the like whose width dimension is narrower than the roll papers R1 and R2 (short in the X direction) is sucked and held on the medium support table 24, the operator selects the slide plate 52 according to the width dimension. Then, the curl pressing member 31 is translated in the X direction.
  As described above, even when the roll paper R (R2) having different width dimensions is sucked, the suction force is maintained on the upper surface of the medium support table 24 while maintaining substantially the same suction force as that of the roll paper R1. Can do.
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, by moving parallel the slide board 52 with respect to the wall part 30, it is in the suction hole 26 in which roll paper is not mounted. The corresponding suction hole 32 is selectively closed by the closing portion 34, and suction is performed in this state.
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 R decreases 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, the suction hole 32 located in the area where the roll paper R does not exist is selectively closed, and the medium support surface 25a is thereby connected via the corresponding suction hole 26. It becomes impossible to suck the air. For this reason, a suction force can be effectively applied to the suction holes 26 located in the region where the roll paper R exists. Therefore, since sufficient suction force for the roll paper R can be obtained, even the roll paper R having different width dimensions can be reliably sucked and held on the medium support surface 25a.
  The shutter mechanism 50 according to the present embodiment includes a slide plate 52 having a size (area) corresponding to all the suction holes 32 formed in the wall portion 30. Even in the case of such a large slide plate 52, the bending due to its own weight can be suppressed by installing it on the upper surface side of the wall portion 30, and the adhesion between the blocking portion 34 and the suction hole 32 can be easily secured. Thereby, the several suction hole 32 provided in the wall part 30 can be selectively obstruct | occluded favorably, without reducing the functionality and operativity as a shutter mechanism.
  Further, since the parallel movement direction of the slide plate 52 coincides with the width direction of the roll paper R, the plurality of suction holes 32 can be selectively opened and closed according to the change in the width dimension of the roll paper. That is, each of the plurality of blocking portions 34 arranged in the moving direction of the slide plate 52 is sequentially different in length according to the arrangement position in the moving direction of the slide plate 52, and accordingly, according to the parallel movement amount of the slide plate 52. The plurality of suction holes 32 can be opened and closed stepwise and selectively. 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, since the extending length of the blocking portion 34 is configured to be changed stepwise along the moving direction of the slide plate 52, the moving distance of the slide plate 52 can be minimized. For this reason, the installation area of the apparatus can be minimized.
  In the present embodiment, the slide plate 52 is always urged toward the wall 30 by the urging portion 36, so that the adhesion of the blocking portion 34 to the suction hole 32 is improved and the suction hole 32. Can be prevented from leaking, and the suction hole 32 can be reliably closed.
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.
Furthermore, these frictional resistances may be reduced by performing chemical treatment on the surface of the blocking portion 34 or the upper surface of the wall portion 30.
In the present embodiment, one suction hole 26 communicates with one pressure chamber 27A. However, a plurality of suction holes 26 may communicate with one pressure chamber 27A.
8 (a) and 8 (b) show a modified example of the closed portion. For example, as shown in FIG. 8 (a), a slide plate 52 having a closed portion 341 formed of a resin material and having a hemispherical shape may be used. However, as shown in FIG. 8B, a slide plate 52 having a convex closing portion 342 formed of rubber, a film, or the like may be used.
Next, another embodiment of the shutter mechanism will be described.
9A and 9B are cross-sectional views schematically showing the configuration of a shutter mechanism according to another embodiment. Note that the same members and the like as those of the shutter mechanism 50 described above are denoted by the same reference numerals and description thereof is omitted, and different members and the like are mainly described.
  The shutter mechanism 60 shown in FIG. 9A is provided with a pressing portion 62 disposed at a position facing the suction hole 32 of the wall portion 30, and between the pressing portion 62 and the wall portion 30. And a slide plate 63 that can be translated along. The slide plate 63 is configured using, for example, a mesh plate as a base material, and communicates the suction hole 26 and the suction hole 32 formed in the platen 25 and has a blocking portion provided corresponding to the suction hole 32. The suction hole 32 can be closed by 64. The blocking portion 64 is made of an elastic member such as rubber with a thickness substantially the same as the thickness of the base material, and is disposed in a plurality of through holes 63a that penetrate the thickness direction of the base material.
  The head portion 62 a of the pressing portion 62 that is movable with respect to the base portion 65 is always urged toward the wall portion 30 by the urging portion 61. For this reason, when the blocking portion 64 is disposed opposite to the pressing portion 62 by sliding the slide plate 63, the pressing portion 62 deforms so that the closing portion 64 is pushed into the suction hole 32, and the suction hole 32 will be blocked. Even if it is such a structure, the effect similar to the said embodiment is acquired, and the suction hole 32 of the wall part 30 can be obstruct | occluded by the press part 62. FIG.
  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 a recording apparatus (liquid ejecting apparatus). However, the recording apparatus (liquid ejecting apparatus) is not limited to an 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. However, 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, the liquid ejecting apparatus that ejects a liquid such as ink has been described as an example of the recording apparatus. However, the recording apparatus is applied to a liquid ejecting apparatus that ejects or discharges liquid other than ink. can do. The liquid that can be ejected by the liquid ejecting apparatus includes a liquid material in which particles of the functional material are dispersed or dissolved, and a gel-like fluid.
  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), 10 ... Feeding part (medium conveyance part), 20 ... Recording part (recording processing part), 24 ... Medium support table (medium adsorption support apparatus), 25 ... Platen (medium support surface) , 25a: medium support surface, 26 (26a to 26g) ... 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 pressing member, 32 (32a-32g) ... 2nd suction hole, 33 ... Partition part, 34 (34a-34g), 64 ... Closure part, 36, 61 ... Energizing part, 52 ... Slide plate (slide member), R1, R2, R3 ... Roll paper (recording medium)

Claims (5)

  1. A medium support part having a plurality of first suction holes penetrating from the medium support surface supporting the recording medium to the back surface;
    A recording processing unit that performs a recording process on the recording medium;
    A plurality of first suction portions provided on the back surface side and communicating with the plurality of first suction holes;
    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 first suction portion and the second suction portion, and formed with a plurality of second suction holes for communicating each first suction portion 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;
    It is arranged on the wall part on the first suction part side, can be translated along the wall part, can have a different length in the direction of the parallel movement, and can selectively close the plurality of second suction holes. And a slide member provided with a plurality of closing portions.
  2. The recording apparatus according to claim 1, wherein the plurality of blocking portions have different lengths sequentially in accordance with the position in the parallel movement direction.
  3. 2. A plurality of partition portions arranged between the medium support portion and the wall portion and partitioning the first suction portions adjacent in the transport direction of the recording medium. The recording apparatus according to 1 or 2.
  4. The recording apparatus according to claim 1, further comprising an urging portion that urges the blocking portion toward the wall portion.
  5. The recording apparatus according to claim 1, wherein at least the closing portion is made of an elastic member.
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JP2011059709A JP5772108B2 (en) 2011-03-17 2011-03-17 recording device
CN201210072021.5A CN102673141B (en) 2011-03-17 2012-03-16 Recording apparatus
US13/422,851 US8714735B2 (en) 2011-03-17 2012-03-16 Recording apparatus

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Publication number Priority date Publication date Assignee Title
WO2020226185A1 (en) * 2019-05-08 2020-11-12 積水化学工業株式会社 Film processing device

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JPS53104073A (en) * 1977-02-18 1978-09-09 Siemens Ag Pneumatic brake
JPH0537863U (en) * 1991-10-22 1993-05-21 石川島検査計測株式会社 Sucker device
JP2001316011A (en) * 2000-05-11 2001-11-13 Tohoku Ricoh Co Ltd Paper suction conveying device and printing device on stencil printing plate
JP2002205855A (en) * 2001-01-10 2002-07-23 Seiko Epson Corp Recorder
JP2003159841A (en) * 2001-11-28 2003-06-03 Noritsu Koki Co Ltd Ink jet printer
JP2009280320A (en) * 2008-05-20 2009-12-03 Seiko Epson Corp Conveying device, recording apparatus equipped with conveying device and conveying method for recording medium

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Publication number Priority date Publication date Assignee Title
JPS53104073A (en) * 1977-02-18 1978-09-09 Siemens Ag Pneumatic brake
JPH0537863U (en) * 1991-10-22 1993-05-21 石川島検査計測株式会社 Sucker device
JP2001316011A (en) * 2000-05-11 2001-11-13 Tohoku Ricoh Co Ltd Paper suction conveying device and printing device on stencil printing plate
JP2002205855A (en) * 2001-01-10 2002-07-23 Seiko Epson Corp Recorder
JP2003159841A (en) * 2001-11-28 2003-06-03 Noritsu Koki Co Ltd Ink jet printer
JP2009280320A (en) * 2008-05-20 2009-12-03 Seiko Epson Corp Conveying device, recording apparatus equipped with conveying device and conveying method for recording medium

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020226185A1 (en) * 2019-05-08 2020-11-12 積水化学工業株式会社 Film processing device

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