JP2012061813A - Recording medium support device and recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium support device capable of preventing the deformation of a support member, and a recorder.SOLUTION: An energizing member support for supporting an energizing member is held to a part different from the support member. The direct action of an energizing force of the energizing member on the support member can thereby be avoided, and the deformation of the support member can be reduced. Furthermore, since the energizing member support is provided between the support member and a seal substrate, the dimensional accuracy of a covering member can be improved in comparison with the case of supporting the energizing member directly to the support member. Consequently, there is no need to increase the energizing force for securing the sealing of the covering member more than necessary, and the deformation of the support member can be reduced. As a result, the conveying accuracy of the recording medium can be improved by reducing the deformation of the support member.

Description

  The present invention relates to a recording medium support device and a recording device.

  Patent Document 1 below discloses an ink jet printer as a recording apparatus. This ink jet printer uses roll paper as a recording medium. In the printing area by the ink jet head, the roll paper is adsorbed on the platen in order to maintain the flatness of the roll paper. Thereby, it is possible to print on the roll paper in a flat state.

  In such a platen, the support surface of the roll paper is formed by a plate-like support member. A plurality of suction holes are formed in the support member. A plurality of chambers are formed inside the platen to suck the suction holes. Therefore, the platen is configured such that the support member is in contact with the hollow chamber.

JP 2003-211749 A

  However, in the configuration in which the support member is in contact with the hollow chamber, there is a problem that the support member is easily deformed by the action of force. When the support member is deformed, the flatness of the roll paper is impaired, so that the conveyance accuracy of the roll paper is lowered and the recording quality may be lowered.

  In view of the circumstances as described above, it is an object of the present invention to provide a recording medium support device and a recording device that can prevent deformation of a support member.

  A recording medium support device according to the present invention has a support surface for supporting a recording medium, and a support member in which a plurality of through-holes penetrating between the support surface and a second surface on the back side of the support surface are formed. A partition member that is provided on the second surface of the support member and divides a space on the second surface into a plurality of chambers in contact with at least one of the plurality of through holes, and the support member and the partition A plurality of air chambers surrounded by a member and sealed with a plurality of connection holes connected to the plurality of air chambers, and a plurality of the connection holes. A suction part that sucks a space on the sealing member connected to the plurality of air chambers, and a predetermined air chamber among the plurality of air chambers, and the connection hole and a part of the sealing member And the sealing member so as to close the connection hole. An urging member for urging the member side, a pressing portion capable of pressing the covering member in a direction away from the sealing member so as to open the connection hole, and the support member and the seal in a predetermined air chamber It is provided between the board | substrate, and it is hold | maintained in the part different from the said support member, and is provided with the biasing member support part which supports the said biasing member.

  According to the present invention, since the urging member supporting portion that supports the urging member is held in a portion different from the supporting member, it is possible to avoid the urging force of the urging member from acting directly on the supporting member. Can do. For this reason, deformation of the support member can be reduced. In addition, since the urging member support portion is provided between the support member and the sealing substrate, the dimensional accuracy of the covering member is increased as compared with the case where the urging member is directly supported by the support member. Can do. For this reason, it is not necessary to increase the urging force for ensuring the sealing of the covering member more than necessary, and the deformation of the support member can be reduced. As described above, the conveyance accuracy of the recording medium can be increased by reducing the deformation of the support member.

The recording medium support device is characterized in that the urging member support portion is provided on the partition member.
According to the present invention, since the urging member support portion is provided on the partition member, it is possible to avoid the urging force by the urging member from acting directly on the support member. For this reason, deformation of the support member can be reduced.

In the recording medium support apparatus, the support surface includes a first support area that supports the recording medium regardless of the dimensions of the recording medium, and a second support area that is different from the first support area. The predetermined air chamber is provided so as to be in contact with the through hole arranged in the second support region.
According to the present invention, since it is not necessary to provide a biasing member for a chamber other than the predetermined chamber, the biasing force of the biasing member acting on the entire apparatus can be reduced accordingly.

In the recording medium support device, the pressing portion includes a plurality of cam members arranged corresponding to the plurality of connection holes, and the plurality of cam members can rotate to a portion different from the support member. It is connected to the rotating shaft supported by this.
According to the present invention, the pressing portion has a plurality of cam members arranged corresponding to the plurality of connection holes, and the plurality of cam members are connected to a rotation shaft that is rotatably supported by a portion different from the support member. Since it is set as the structure comprised, the pressing force to the rotating shaft received via a coating | coated part and a cam member from a biasing member acts on a different part from a support member. For this reason, deformation of the support member can be reduced.

The recording medium support device further includes a space forming member that surrounds a space on the sealing member that is sucked by the suction portion, and the rotation shaft is supported by the space forming member. .
According to the present invention, the pressing force applied to the rotation shaft from the biasing member via the covering portion and the cam member acts on the space forming member. For this reason, deformation of the support member can be reduced.

In the recording medium support device, the pressing unit includes a rotation shaft driving unit that rotates the rotation shaft by switching the rotation shaft to a plurality of angles, and the plurality of cam members are convex portions that are in contact with the covering unit. The convex portion is provided at a different angle for each cam member.
According to the present invention, the pressing portion has the rotation shaft driving portion that rotates the rotation shaft by switching the rotation shaft to a plurality of angles, the plurality of cam members have the protrusions that contact the covering portion, and the protrusions are the cam members. Each of the connection holes can be controlled so that the open / close state is different by switching the angle of the rotation shaft.

In the recording medium support device, the support member and the sealing member are formed using a metal material, and the partition member is formed using a resin material.
According to the present invention, since the support member and the sealing member are formed using a metal material, and the partition member is formed using a resin material, the support member, the partition member, and the sealing member Deformation due to the difference in linear expansion coefficient can be suppressed.

  A recording apparatus according to the present invention includes a recording medium support apparatus that supports a recording medium, and a recording unit that performs a recording process on the recording medium supported by the recording medium support apparatus, and the recording medium support apparatus includes: It is said recording medium support apparatus, It is characterized by the above-mentioned.

  According to the present invention, a recording medium support device that supports a recording medium and a recording unit that performs a recording process on the recording medium supported by the recording medium support device, the recording medium support device conveying accuracy of the recording medium. Therefore, the quality of recording by the recording unit can be improved.

1 is a schematic configuration diagram illustrating a printer according to an embodiment of the present invention. It is a perspective view which shows the recording part which concerns on embodiment of this invention. It is a top view which shows the platen which concerns on embodiment of this invention. It is a disassembled perspective view of the support apparatus which concerns on embodiment of this invention. It is a disassembled perspective view of the support apparatus which concerns on embodiment of this invention. It is a disassembled perspective view of the main-body member which concerns on embodiment of this invention. It is sectional drawing of the support apparatus which concerns on embodiment of this invention. It is a perspective view which shows the cam mechanism of the suction switching device in embodiment of this invention. It is sectional drawing which shows the cam mechanism of the suction switching device in embodiment of this invention. It is sectional drawing which shows the other structure of the support apparatus which concerns on embodiment of this invention.

  Hereinafter, an embodiment of a recording apparatus according to the present invention will be described with reference to the drawings. In the drawings used in the following description, an XYZ orthogonal coordinate system is set, and the positional relationship of each member may be described with reference to the XYZ orthogonal coordinate system. Here, the predetermined direction in the horizontal plane is the X-axis direction (width direction), the direction orthogonal to the X-axis direction in the horizontal plane is the direction orthogonal to the Y-axis direction (conveying direction), the X-axis direction, and the Y-axis direction ( (Vertical direction) is defined as the Z-axis direction. In the present embodiment, an ink jet printer (hereinafter simply referred to as a printer) is illustrated as a recording apparatus.

FIG. 1 is a schematic configuration diagram illustrating a printer 11 according to an embodiment of the present invention.
The printer 11 ejects ink (fluid) from a recording head 31 onto a long paper (recording medium) P extended from a roll paper (roll body) RP wound in a roll shape, thereby generating images, characters, and the like. Is printed. The printer 11 includes a conveyance unit (conveyance device) 20 that conveys the paper P extended from the roll paper RP, a recording unit 30 that performs printing on the paper P, and a cutting that cuts the paper P that has undergone printing into a predetermined size. And a control unit CONT that comprehensively controls the operation of each component.

  The printer 11 includes a case 12 that accommodates the roll paper RP, and a main body case 13 that accommodates the transport unit 20, the recording unit 30, the cutting unit 40, the back surface printing unit 50, and the like. A paper discharge tray 17 is provided on the front side (+ Y side) of the main body case 13 for discharging the paper Ps that has been printed and cut. Further, a container 14 (hereinafter referred to as a “scrap container”) 15 that receives and accumulates the cut pieces Pk generated by cutting the paper P is formed on the right side surface of the main body case 13 so as to be slightly recessed from the surface. It is arranged in the inside. In this embodiment, the chip container 15 can be pulled out from the main body case 13 in the direction (X-axis direction) orthogonal to the transport direction (Y-axis direction), and the end surface in the orthogonal direction is exposed in the recess 14. In addition, a handle 16 for pulling out the chip container 15 is provided at the end face.

  Hereinafter, each component provided in the printer 11 will be described in accordance with the conveyance order of the sheets P conveyed by a plurality of roller pairs functioning as the conveyance unit 20 provided in the printer 11. The transport unit 20 includes a paper feed roller pair 21, transport roller pairs 22, 23, 24, 25 and a paper discharge roller pair 26. First, the paper P unrolled from the roll paper RP is fed to the recording unit 30 by the paper feed roller pair 21. The recording unit 30 includes a recording head 31 that ejects ink and a support device (recording medium support device) 32 that supports the paper P.

  In the recording unit 30, the paper P fed from the roll paper RP is conveyed, and an image or the like is printed on the upper surface (front surface) of the paper P. First, the paper P is sent out between the recording head 31 and the support device 32 by the transport roller pair 22. The upper surface (front surface) of the fed paper P is conveyed with a predetermined distance from the recording head 31. At this time, ink is ejected from the recording head 31 onto the upper surface of the paper P to perform printing. Thereafter, the paper P is transported to the cutting unit 40 by the transport roller pair 23.

  The cutting unit 40 has a cutter 41 constituted by a rotary blade or the like as a functional component, and cuts the paper P for each region corresponding to a printed image or the like. At this time, the cutting unit 40 cuts the printed area so as to remove an unnecessary area existing at the end in the transport direction. For this reason, as shown in the drawing, the sheet P is cut to generate a cut piece Pk, and the generated cut piece Pk falls in the direction of gravity. Therefore, the chip container 15 is disposed below the cutting portion 40 in order to receive and collect the falling cut pieces Pk.

  The cut paper Ps is then conveyed to the back surface printing unit 50 that prints characters on the back surface. The back side printing unit 50 includes a so-called impact dot type printing unit 51 that presses an ink ribbon against the lower surface (back side) of the paper Ps to form ink dots, a support base 52 that supports the paper Ps from above during printing, have. In the back surface printing unit 50, the paper Ps to be transported is first sent out between the printing unit 51 and the support base 52 by the transport roller pair 24. The sent paper Ps is printed with dots on the lower surface (rear surface) of the paper Ps by the printing unit 51, and is sent in the transport direction by the transport roller pair 25.

  Thereafter, the paper Ps is conveyed to, for example, a drying unit (not shown), dried by a heater unit (not shown) as a functional component, and finally discharged by the paper discharge roller pair 26. The paper is discharged to the paper tray 17.

Next, the configuration of the recording unit 30 of this embodiment will be described in detail.
FIG. 2 is a perspective view showing the recording unit 30 in the embodiment of the present invention. FIG. 3 is a plan view of the support device 32 according to the embodiment of the present invention.

  Reference numeral 33 in FIG. 2 indicates a carriage on which the recording head 31 is mounted. The recording head 31 of this embodiment is a so-called serial type inkjet head mounted on a carriage 33 that moves in the width direction (X-axis direction) of the conveyed paper P. 2 is a flushing box for performing maintenance by flushing (preliminary ejection) of the recording head 31.

  The carriage 33 is supported by a guide rod 35 so as to be movable in the width direction. The carriage 33 is configured to move along the guide rod 35 by driving a belt 37 stretched around the pulley 36. The belt 37 is driven by a carriage motor 38. The recording unit 30 is provided with a linear encoder 39 along the movement path of the carriage 33. The linear encoder 39 detects the position of the carriage 33 in the width direction. This detection signal is transmitted to the control device CONT as position information. The control device CONT recognizes the scanning position of the recording head 31 based on the position information from the linear encoder 39, and controls the printing operation and the like by the recording head 31.

  The support device 32 includes a platen (support member) 60 having a support surface 60 a that supports the paper P. The platen 60 is made of, for example, a metal material such as stainless steel or an alloy. As shown in FIGS. 2 and 3, a plurality of suction holes 61 are formed in the support surface 60 a of the platen 60 in order to maintain the flatness of the paper P. Further, the platen 60 is provided with a plurality of ink receiving portions (fluid receiving portions) 62 that open to the support surface 60a and receive ink in order to perform so-called borderless printing. The ink receiving unit 62 includes, for example, an ink absorber such as a sponge or a nonwoven fabric that absorbs ink. The paper feeding form of the paper P of the present embodiment employs so-called center paper feeding, and the ink receiving portion 62 is disposed symmetrically with respect to the center position of the platen 60. The ink receiving unit 62 is provided at a position corresponding to the paper width according to the standard of the paper P (A4, B4, A3, B3, etc.).

  The suction area A for sucking the paper P through the plurality of suction holes 61 extends in the width direction (X-axis direction). The suction through the suction hole 61 is performed by the fan 63 shown in FIG. The fan 63 and the bottom of the support device 32 are connected via a duct 64. The recording unit 30 according to the present embodiment includes a suction switching device 90 that stops suction by the suction holes 61 in the suction region A that is out of the paper P in the width direction in order to suppress the flying curve of ink during printing.

Next, the configuration of the support device 32 including the suction switching device 90 of the present embodiment will be described in detail.
FIG. 4 is an exploded perspective view of the support device 32 according to the embodiment of the present invention. FIG. 5 is an exploded perspective view of the support device 32 according to the embodiment of the present invention. FIG. 6 is an exploded perspective view of the main body member 70 in the embodiment of the present invention. FIG. 7 is a diagram showing a configuration along a DD section in FIG. 3. FIG. 8 is a perspective view showing the cam mechanism 91 of the suction switching device 90 according to the embodiment of the present invention.

  As shown in FIGS. 4 and 7, the support device 32 is configured by combining a platen 60, a main body member (partition member) 70, and a bottom frame (space forming member) 80. The main body member 70 is formed using a resin material such as plastic. An air chamber 71 connected to the suction hole 61 and an ink receiving chamber 72 communicating with the ink receiving portion 62 are formed in the main body member 70.

  The air chamber 71 has a first chamber 71a to a sixth chamber 71f that are divided into a plurality of portions according to the position in the width direction. The first chamber 71 a to the sixth chamber 71 f are divided for each region sandwiched between the ink receiving chambers 72. The air chamber 71 at the center in the X direction is the first chamber 71a. The second chamber 71b is provided at a position adjacent to the first chamber 71a on the end side in the X direction. Hereinafter, the third chamber 71c, the fourth chamber 71d, the fifth chamber 71e, and the sixth chamber 71f are arranged in this order toward the end in the X direction.

  Regarding the positional relationship between the platen 60 and the air chamber 71 of the main body member 70, as shown in FIG. 7, the suction hole 61a communicates with the first chamber 71a, the suction hole 61b communicates with the second chamber 71b, and the suction hole 61c communicates with the third chamber 71c, the suction hole 61d communicates with the fourth chamber 71d, the suction hole 61e communicates with the fifth chamber 71e, and the suction hole 61f communicates with the sixth chamber 71f.

  As shown in FIGS. 5 and 7, the bottom of the air chamber 71 other than the first chamber 71 a is closed by a frame 73 and a valve body 74. For example, similar to the platen 60, the frame 73 is formed using a metal material such as stainless steel or an alloy material. For this reason, the constituent materials of the platen 60, the main body member 70, and the frame 73 that are sequentially arranged in the Z direction are in the order of metal material-resin material-metal material. For this reason, for example, even when the linear expansion coefficient changes, the deformation of the platen 60, the main body member 70, and the frame 73 is suppressed.

  Since the first chamber 71a is provided in an area corresponding to the minimum paper width of the paper P, the first chamber 71a is always opened, and the suction hole 61 communicating with the first chamber 71a performs suction regardless of the paper width of the paper P. It is like that. As shown in FIG. 3, the first chamber 71 a is disposed at a position corresponding to the first region AR <b> 1 of the platen 60. Therefore, the first support area AR1 of the platen 60 is an area corresponding to the minimum paper width of the paper P, and is an area where suction is performed regardless of the paper width of the paper P. An area other than the first support area AR1 is a second support area AR2 in which suction is performed or not performed depending on the paper width of the paper P. The second chamber 71b to the sixth chamber 71f are connected to the suction holes 61b to 61f arranged in the second support area AR2, respectively.

  As shown in FIGS. 6 and 7, the valve element 74 is urged toward the frame 73 by the urging member 75. The valve body 74 has a rectangular base portion 74a extending in the transport direction and a protruding portion 74b protruding downward from the base portion 74a. The protrusion 74 b has a size that can be inserted into a connection hole 76 formed in the frame 73. The end portion on the frame 73 side of the urging member 75 is in contact with the base portion 74 a of the valve body 74. The platen 60 side end portion of the urging member 75 is supported by the urging member support portion SP.

  As shown in FIG. 7, the urging member support portion SP is provided on the main body member 70. For example, a part of the main body member 70 is provided to protrude from the second chamber 71b to the sixth chamber 71f. The urging member support portions SP provided in the second chamber 71b and the third chamber 71c are formed so as to protrude from the platen 60 side to the frame 73 side (−Z direction) in the drawing, for example. The urging member support portions SP provided in the fourth chamber 71d to the sixth chamber 71f are provided so as to protrude from the back side in the depth direction of the paper surface in the drawing to the near side (−Y direction), for example.

  The biasing member support portion SP is provided so that the support position of the biasing member 75 is disposed between the platen 60 and the frame 73. The urging member support portion SP is abutting on the platen 60 side end of the urging member 75, and projects from the abutting portion SPa toward the frame 73, and is latched to the urging member 75. And a locking portion SPb.

  Since the urging member support portion SP is held in a portion different from the platen 60, the urging force by the urging member 75 can be prevented from acting directly on the platen 60. Further, since the urging member support portion SP is provided between the platen 60 and the frame 73 in the Z direction, the urging member 75 can be supported at a position in the middle of reaching the platen 60 from the frame 73 side. it can. In this case, the dimensional accuracy of the valve body 74 can be increased as compared with the configuration in which the urging member 75 is supported by the platen 60. Therefore, the urging force for ensuring the sealing of the valve body 74 is more than necessary. There is no need to make it bigger. In this way, it is possible to reduce deformation of surrounding members such as the main body member 70, the platen 60, and the frame 73.

  As shown in FIGS. 4 and 7, the bottom frame 80 is connected to the bottom of the main body member 70 and is provided to seal the inside of the main body member 70. An opening 81 to which a duct 64 (see FIG. 2) is connected is provided at the center of the bottom frame 80.

  A rotating shaft SF of a cam mechanism 91 that selectively lifts the valve element 74 is supported on the bottom frame 80. As described above, since the rotation shaft SF is supported by a portion different from the platen 60, the deformation of the platen 60 can be suppressed. The cam mechanism 91 is rotatably supported around an axis extending in the width direction, and includes a cam 92 having a shape corresponding to each valve body 74 at a position corresponding to each valve body 74.

  The cam mechanism 91 includes a cam 92b corresponding to the valve body 74 of the second chamber 71b, a cam 92c corresponding to the valve body 74 of the third chamber 71c, a cam 92d corresponding to the valve body 74 of the fourth chamber 71d, A cam 92e corresponding to the valve body 74 of the fifth chamber 71e and a cam 92f corresponding to the valve body 74 of the sixth chamber 71f are provided. The cams 92b to 92f are attached to the rotation shaft SF.

  As shown in FIGS. 8A and 8B, the shape of the cam 92 has different shapes depending on the position in the width direction. The cam 92 has a convex portion 93 having a diameter capable of coming into contact with the protruding portion 74b of the valve body 74, and the ratio of the convex portion 93 in the circumferential direction differs among the cams 92b to 92f. The ratio of the convex part 93 in the cam 92b is the largest, and then decreases in the order of the cams 92c to 92f.

  Specifically, when the cam mechanism 91 is rotated around the axis, all of the cams 92b to 92f are not in contact with the valve body 74, and only the cam 92b lifts the valve body 74 and opens the second chamber 71b. The cams 92b and 92c lift the valve body 74 to open the second chambers 71b and 72c, the cams 92b to 92d lift the valve body 74 and open the second chamber 71b to the fourth chamber 71d, and the cam 92b. -92e lifts the valve body 74 and opens the second chamber 71b to the fifth material 71e, and all the cams 92b to 92f lift the valve body 74 and opens the second chamber 71b to the sixth chamber 71f. It is possible to switch to.

  Thus, since the convex part 93 is the structure provided in the different angle for every cam 92b-92f, it controls so that the opening / closing state may differ about each connection hole 76 by switching the angle of rotating shaft SF. be able to.

  The cam mechanism 91 having the above configuration is configured to be rotationally driven by a motor 95 (see FIG. 2) connected via a gear mechanism 94. The control device CONT is configured to drive the motor 95 based on the paper width information of the set paper P and control the rotation angle of the cam mechanism 91.

For example, the case where the opening / closing of the valve body 74 provided in the second chamber 71b is switched will be described as an example. FIG. 9A and FIG. 9B are diagrams showing a configuration along the section EE in FIG.
When the paper P having the paper width shown in FIG. 3 is set, the cam mechanism 91 is rotated from the state shown in FIG. By this operation, as shown in FIG. 9B, the cam 92b lifts the valve body 74 and opens the second chamber 71b. Then, in the width direction, the suction holes 61b in the suction area A that is out of the paper P are sucked, and the suction holes 61c to 61f are stopped. Of course, the same explanation can be made when the valve bodies 74 provided in the third chamber 71c to the sixth chamber 71f (not shown) are switched.

Next, a printing operation in the recording unit 30 of the printer 11 configured as described above will be described.
First, based on the paper width of the set paper P, suction by the suction holes 61 in the suction area A that is out of the paper P is stopped in the width direction. Specifically, the control device CONT drives the suction switching device 90. When the paper P having the paper width shown in FIG. 3 is set, the control device CONT drives the motor 95 based on the paper width information of the set paper P to control the rotation angle of the cam mechanism 91, and only the cam 92b is The valve body 74 is lifted to open the second chamber 71b. Then, by driving the fan 63, suction from the suction hole 61a communicating with the first chamber 71a that is always open and the suction hole 61b communicating with the second chamber 71b that is opened is started. On the other hand, since the third chambers 71c to 71f are closed by the valve body 74, the suction by the suction holes 61c to 61f in the suction region A that is removed from the paper P can be stopped in the width direction.

Next, the paper P is transported in the Y-axis direction along the support surface 60 a of the platen 60 by the transport unit 20. When the leading end of the paper P enters the suction area A, the suction force by the suction holes 61a and 61b acts. In the suction region A, the suction holes 61a and 61b are formed in the same shape and the same pitch in each row along the transport direction, so that the suction force acting as the paper P is transported is constant. The fluctuation can be suppressed. For this reason, the conveyance accuracy of the paper P can be increased.
Further, since the shape of the suction hole 61b sandwiched between the ink receiving portions 62 is a long hole shape extending in the transport direction, the sheet P can be sucked even in a narrow region where the width cannot be taken.

  Then, as shown in FIG. 3, the leading end of the paper P in the transport direction reaches the position that covers the suction hole 61 formed at the most downstream position in the transport direction on the support surface 60a beyond the printing area B. Sometimes, the control device CONT causes the recording head 31 to perform printing. In the present embodiment, since the suction area A extends downstream in the transport direction with respect to the print area B, the portion where the leading end of the paper P floats can be removed from the print area B. At this time, since the suction holes 61a and 61b are all closed by the paper P, unnecessary air flow is not formed around the paper P. Therefore, the recording head 31 can perform printing on the paper P that is ensured to be flat without causing the ink to bend. Thereby, a high quality image or the like can be formed on the surface of the paper P.

  As described above, according to the present embodiment, since the urging member support portion SP is held in a portion different from the platen 60, it is possible to avoid the urging force of the urging member 75 from acting directly on the platen 60. be able to. Further, since the urging member support portion SP is provided between the platen 60 and the frame 73 in the Z direction, the urging member 75 can be supported at a position in the middle of reaching the platen 60 from the frame 73 side. it can. In this case, the dimensional accuracy of the valve body 74 can be increased as compared with the configuration in which the urging member 75 is supported by the platen 60. Therefore, the urging force for ensuring the sealing of the valve body 74 is more than necessary. The deformation of the platen 60 can be reduced without increasing the size. From the above, the conveyance accuracy of the paper P can be increased by reducing the deformation of the platen 60.

  Further, a support device 32 that supports the paper P and a recording unit 30 that performs a recording process on the paper P supported by the support device 32, and the support device 32 can improve the conveyance accuracy of the paper P. Therefore, the quality of recording by the recording unit 30 can be improved.

  As mentioned above, although preferred embodiment of this invention was described referring drawings, this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  FIG. 10 is a diagram illustrating a configuration of a fixing member that fixes the bottom frame 80 and the main body member 70. As shown in FIG. 10, a stepped screw SC may be used as the fixing member. The stepped screw SC has a head SCh, a first part SCa connected to the head SCh, and a second part SCb connected to the first part SCa. In the stepped screw SC, the diameter of the second part SCb is smaller than the diameter of the first part SCa. That is, it is formed so as to become thinner stepwise from the head SCh to the tip.

  On the other hand, the bottom frame 80 and the main body member 70 also have a configuration corresponding to the stepped screw SC. That is, the screw hole 80 </ b> P formed in the bottom frame 80 has a larger diameter than the screw hole 70 </ b> P formed in the main body member 70. When the stepped screw SC is inserted into the screw hole 80P and the screw hole 70P, a gap is formed between the head SCh corresponding surface 80a of the bottom frame 80 and the head SCh of the stepped screw SC as shown in FIG. It has come to be. By using such a stepped screw SC, for example, even when the bottom frame 80 is formed of a resin material and expands or contracts due to heat, the metal material sequentially disposed in the Z direction is used. The effect of suppressing the deformation of the platen 60 due to the configuration of the platen 60, the resin material main body member 70, and the metal material frame 73 can be maintained.

  In the above embodiment, the ink jet printer 11 that ejects ink is employed as an example of the recording apparatus. However, a recording apparatus that ejects or discharges liquid other than ink may be employed. The present invention can be used in various recording apparatuses including a recording head that discharges a minute amount of liquid droplets. The droplet means a state of the liquid ejected from the recording apparatus, and includes a liquid having a granular shape, a tear shape, or a thread shape.

  The liquid here may be any material that can be ejected by the recording apparatus. For example, it may be in a state in which the substance is in a liquid phase, such as a liquid with high or low viscosity, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melts ) And a liquid as one state of a substance, as well as a material in which particles of a functional material made of a solid such as a pigment or metal particles are dissolved, dispersed or mixed in a solvent. A typical example of the liquid is ink as described in the above embodiment. Here, the ink includes general water-based inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks.

  Further, a specific example of the recording apparatus is not limited to an apparatus including a container (case 12) having a roll paper in which a paper sheet is wound in a roll shape as described in the above embodiment. For example, any apparatus provided with a container in which a long recording medium such as a flexible substrate, a metal plate, a plastic sheet, or a cloth is wound in a roll shape is used as a recording apparatus. Can be adopted. Furthermore, the long recording medium provided in the container does not necessarily have to be wound in a roll shape, for example, in a twisted manner.

  P ... paper CONT ... control device SP ... biasing member support portion SPa ... contact portion SPb ... locking portion SF ... rotating shaft AR1 ... first region AR2 ... second region 11 ... printer 32 ... support device 60 ... platen 60a ... Support surface 61 (61a-61f) ... Suction hole 70 ... Main body member 71 ... Air chamber 71a ... First chamber 71b ... Second chamber 71c ... Third chamber 71d ... Fourth chamber 71e ... Fifth chamber 71f ... Sixth chamber 73 ... Frame 74 ... Valve body 74a ... Base part 74b ... Projection part 75 ... Biasing member 76 ... Connection hole 80 ... Bottom frame 90 ... Suction switching device 91 ... Cam mechanism 92 (92b to 92f) ... Cam 93 ... Projection part 94 ... Gear mechanism 95 ... Motor 30 ... Recording part

Claims (8)

A support member having a support surface for supporting the recording medium, and a plurality of through holes penetrating between the support surface and a second surface on the back side of the support surface;
A partition member that is provided on the second surface of the support member and divides a space on the second surface into a plurality of air chambers in contact with at least one of the plurality of through holes;
A sealing member provided to seal a plurality of the air chambers surrounded by the support member and the partition member, and a plurality of connection holes connected to the plurality of air chambers;
A suction part for sucking spaces on the sealing member connected to the plurality of air chambers via the plurality of connection holes;
A covering member that is provided in the predetermined air chamber among the plurality of air chambers and covers the connection hole and a part of the sealing member;
A biasing member that biases the covering member toward the sealing member so that the connection hole is closed;
A pressing part capable of pressing the covering member in a direction away from the sealing member so that the connection hole is opened;
A recording medium support comprising: an urging member support portion that is provided between the support member and the sealing substrate in a predetermined air chamber, is held at a portion different from the support member, and supports the urging member. apparatus. The recording medium support device according to claim 1, wherein the urging member support portion is provided on the partition member. The support surface includes a first support region that supports the recording medium regardless of the size of the recording medium, and a second support region that is different from the first support region,
The recording medium support device according to claim 1, wherein the predetermined air chamber is provided in contact with the through hole disposed in the second support region. The pressing portion has a plurality of cam members arranged corresponding to the plurality of connection holes,
The recording medium support device according to any one of claims 1 to 3, wherein the plurality of cam members are connected to a rotation shaft that is rotatably supported by a portion different from the support member. A space forming member surrounding the space on the sealing member sucked by the suction portion;
The recording medium support device according to claim 4, wherein the rotation shaft is supported by the space forming member. The pressing unit includes a rotation shaft driving unit that rotates the rotation shaft by switching to a plurality of angles,
The plurality of cam members have a convex portion that comes into contact with the covering portion,
The recording medium support device according to claim 5, wherein the convex portion is provided at a different angle for each cam member. The support member and the sealing member are formed using a metal material,
The recording medium support device according to claim 1, wherein the partition member is formed using a resin material. A recording medium support device for supporting the recording medium;
A recording unit that performs a recording process on a recording medium supported by the recording medium support device,
The recording medium support device is the recording medium support device according to any one of claims 1 to 7. The recording device.

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