JP2019202467A - Conveying device and recording device - Google Patents

Abstract

To suppress abrasion of a press roller with a simple structure.SOLUTION: A conveying device 102 can convey a recording sheet 50 of which a size in a width direction orthogonal to a conveying direction of the recording sheet 50 is different, and includes: a conveying belt 116 which conveys the recording sheet 50; a plurality of following rollers 201 which press the recording sheet 50 conveyed by the conveying belt 116 in a pressing position to the conveying belt 116, and are arranged in the width direction; and a cam member 208 which separates the following roller 201, which is in non-contact with the recording sheet 50 conveyed by the conveying belt 116, from the pressing position in response to the size in the width direction of the recording sheet 50.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a conveying apparatus capable of conveying recording sheets having different sizes in the width direction perpendicular to the conveying direction of a recording sheet such as recording paper.

  As a conventional ink jet recording apparatus, there is an ink jet recording apparatus provided with a conveying apparatus that conveys a recording sheet nipped between a conveying belt and a driven roller by a moving annular conveying belt. In such an ink jet recording apparatus, when ink is ejected from the recording head and printing is performed on the recording sheet, it is necessary to suppress the recording sheet from floating from the conveyance belt immediately below the recording head. In general, as a means for suppressing the floating of the recording sheet from the conventional conveying belt, an apparatus using an intake system in which the recording sheet is sucked onto the conveying belt by sucking air from a plurality of intake holes formed in the conveying belt is known. It has been.

  Further, an inkjet recording apparatus capable of printing on recording sheets having various sheet widths includes a plurality of conveying belts and a plurality of driven rollers in the sheet width direction up to a position corresponding to the maximum sheet width that can be conveyed. . Therefore, when a recording sheet having a small sheet width is conveyed, a combination in which no recording sheet is interposed between the conveying belt and the driven roller occurs. When printing is performed in such a state, the driven roller in the area where no recording sheet is interposed is driven by the surface of the driven roller being in contact with the edge of the suction hole of the conveying belt and the like. A lot of surface wear will progress. In particular, the wear becomes more remarkable in a driven roller made of a sponge material.

  In this way, when the follower roller wears due to the contact of the conveying belt, the wear amount of each of the plurality of follower rollers varies depending on the presence or absence of the recording sheet. As a result, the nip state between the transport belt and the driven roller is not uniform, and the transport accuracy in the transport device decreases as durability increases.

  On the other hand, Patent Document 1 discloses a paper width guide that comes into contact with an edge of a recording sheet that is conveyed, and a paper width guide that can be moved integrally with the paper width guide according to the paper width of the recording sheet. A printing apparatus having a driven roller that presses against a conveying roller is disclosed. In the printing apparatus of Patent Document 1, since the recording sheet is always interposed between the conveyance roller and the driven roller, and all the driven rollers always press the recording sheet, wear of the driven roller can be suppressed. .

JP 2016-120652 A

  However, in Patent Document 1, when a plurality of driven rollers arranged in the width direction are moved in the width direction according to different sheet widths of the recording sheets, all the driven rollers are placed at positions corresponding to the size of the recording sheets. A moving structure is required, and the moving mechanism is complicated.

  The objective of this invention is providing the conveying apparatus which can suppress abrasion of a press roller by simple structure.

  The transport apparatus of the present invention is a transport apparatus capable of transporting recording sheets having different sizes in the width direction orthogonal to the transport direction of the recording sheet, the transport means transporting the recording sheet, and the recording transported by the transport means The sheet is pressed against the conveying unit at the pressing position, and is not in contact with the plurality of pressing rollers arranged in the width direction and the recording sheet conveyed by the conveying unit according to the size of the recording sheet. Separating means for separating the pressing roller from the pressing position.

  According to the present invention, wear of the pressing roller can be suppressed with a simple configuration.

1 is a schematic diagram illustrating a configuration of a recording apparatus according to Embodiment 1 of the present invention. It is a perspective view of the guide part of the conveying apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the conveyance mechanism part of the conveyance apparatus which concerns on Embodiment 1 of this invention. It is a rear view of the conveyance mechanism part of the conveying apparatus which concerns on Embodiment 1 of this invention. It is a schematic diagram of the conveyance machine rear part of the conveying apparatus which concerns on Embodiment 1 of this invention. It is a one part enlarged view of the conveying apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows operation | movement of the conveying apparatus which concerns on Embodiment 1 of this invention. It is a bottom view of the guide part of the conveying apparatus which concerns on Embodiment 2 of this invention. It is a rear view of the conveyance mechanism part of the conveying apparatus which concerns on Embodiment 2 of this invention. It is a one part schematic diagram of the conveying apparatus which concerns on Embodiment 2 of this invention. It is a block diagram which shows the structure of the conveying apparatus which concerns on Embodiment 2 of this invention. It is a flowchart which shows the recording control process which concerns on Embodiment 2 of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
<Configuration of recording apparatus>
The configuration of the recording apparatus 100 according to Embodiment 1 of the present invention will be described in detail with reference to FIG.

  The recording apparatus 100 can be connected to a personal computer 120, and includes a recording sheet feeding unit 101, a conveying apparatus 102, a cutter unit 105, and a print engine 109. Here, the recording apparatus 100 exemplifies an inkjet recording apparatus.

  The recording sheet feeding unit 101 can store the recording sheet 50 wound in a roll shape. The recording sheet feeding unit 101 is rotatable in the B direction or the C direction shown in FIG.

  The transport device 102 transports the recording sheet 50 fed from the recording sheet feeding unit 101 in the transport direction A. Here, the conveyance direction A is the moving direction of the recording sheet 50 during recording in the recording apparatus 100.

  The cutter unit 105 cuts and separates the recording sheet 50 that is conveyed by the conveying device 102 and on which an image is recorded by the recording head 106.

  The print engine 109 records an image on the recording sheet 50 conveyed by the conveying device 102. The print engine 109 includes a recording head 106, a recording head lifting / lowering unit 107, and a recovery unit 108.

  The recording head 106 records an image on the recording sheet 50 conveyed by the conveying device 102 by an inkjet method or the like.

  The recording head lifting / lowering unit 107 lowers the recording head 106 to the recording position or raises the recording head 106 to the standby position.

  The recovery unit 108 maintains stable ejection of the recording head 106.

  In the recording apparatus 100 having the above-described configuration, when the recording sheet 50 wound and accommodated in the recording sheet feeding unit 101 is pulled out by the user, the pulled recording sheet 50 is conveyed by the conveying apparatus 102 in the conveying direction A. Transport toward Further, the recording apparatus 100 records an image on the recording sheet 50 conveyed by the conveying apparatus 102 by the recording head 106. Then, the recording apparatus 100 conveys the recording sheet 50 on which an image is recorded by the conveying device 102, and separates the conveyed recording sheet 50 by the cutter unit 105.

<Configuration of transport device>
The configuration of the transfer apparatus 102 according to the first embodiment of the present invention will be described in detail with reference to FIGS.

  The transport apparatus 102 includes a guide unit 103 and a transport mechanism unit 104.

  The guide unit 103 guides the recording sheet 50 fed from the recording sheet feeding unit 101 toward the conveyance mechanism unit 104 while restricting movement in the width direction orthogonal to the conveyance direction A of the recording sheet 50.

  The conveyance mechanism unit 104 conveys the recording sheet 50 fed while being guided by the guide unit 103 in the conveyance direction A.

  The conveyance device 102 having the above-described configuration is configured such that when the recording sheet 50 wound and stored in the recording sheet feeding unit 101 is pulled out by the user, the drawn recording sheet 50 is conveyed by the guide unit 103 to the conveyance mechanism unit 104. To guide. Further, the transport device 102 transports the recording sheet 50 guided to the transport mechanism unit 104 by the guide unit 103 in the transport direction A by the transport mechanism unit 104.

<Configuration of guide section>
The configuration of the guide unit 103 according to Embodiment 1 of the present invention will be described in detail with reference to FIG.

  2A shows a state where the recording sheet 50 is set on the guide portion 103, and FIG. 2B shows a state before the recording sheet 50 is set on the guide portion 103. FIG.

  The guide unit 103 includes a feeding base 1, a fixed side width restriction guide part 2, and a movable side width restriction guide part 3.

  A recording sheet 50 fed from the recording sheet feeding unit 101 is placed on the feeding table 1.

  The fixed-side width regulating guide portion 2 is fixed to the feeding table 1 with a screw (not shown) and includes a sheet abutting surface 4. One end in the width direction of the recording sheet 50 pulled out from the recording sheet feeding unit 101 by the user abuts against the sheet abutting surface 4.

  The movable side width regulating guide portion 3 as the regulating means is movable in the direction D in FIG. 2A along the shaft portion 5 provided along the width direction of the recording sheet 50, and In order to facilitate the setting, it can be opened and closed in the E direction of FIG. The movable side width regulating guide portion 3 moves to a position where it abuts against the other end in the width direction of the recording sheet 50, which is a position that matches the sheet width of the recording sheet 50 to be used, and stops. The movable side width restriction guide part 3 includes a pin 210 as an engaging means that moves as the movable side width restriction guide part 3 moves. Here, the sheet width of the recording sheet 50 is the length of the recording sheet 50 in the width direction.

  The fixed side width restriction guide part 2 and the movable side width restriction guide part 3 having the above-described structure restrict the movement of the recording sheet 50 placed on the feeding table 1 in the upward direction and the width direction.

<Configuration of transport mechanism>
The configuration of the transport mechanism unit 104 according to the first embodiment of the present invention will be described in detail with reference to FIGS. 3 to 6.

  In FIG. 5, FIG. 5A shows a state where the driven roller 201 is in contact with the recording sheet 50 when the recording sheet 50 exists between the conveyance belt 116 and the driven roller 201. FIG. 5B shows a state in which the driven roller 201 is separated from the conveyance belt 116 when the recording sheet 50 is not present between the conveyance belt 116 and the driven roller 201.

  The transport mechanism unit 104 includes a transport belt 116, a drive unit 132, a suction fan 133, a driven roller 201, a roller holder 202, and a pinch holder 203. The transport mechanism unit 104 includes a support metal plate 204, a shaft unit 205, an urging member 207, a cam member 208, a lock member 209, and an urging member 214.

  As shown in FIG. 3, the conveyance belt 116 as the conveyance means includes a plurality of suction holes 117 along the conveyance direction A. The conveyance belt 116 is driven in the conveyance direction A by the driving unit 132 and conveys the recording sheet 50 in the conveyance direction A. A plurality of conveyor belts 116 are provided along the width direction. In this example, as shown in FIG. 3, the conveyance belt 116 is provided with three conveyance belts 116a, 116b, and 116c.

  The driving unit 132 drives the conveyor belt 116.

  The suction fan 133 sucks the recording sheet 50 onto the conveyance belt 116 through a plurality of suction holes 117 provided in the conveyance belt 116 by sucking air.

  The driven roller 201 as a pressing roller can be rotated by driving the conveying belt 116 with the shaft portion 205 shown in FIG. 5 as a rotation axis, and is conveyed with the recording sheet 50 nipped between the conveying belt 116. To do. The driven roller 201 is supported by the roller holder 202 and is movable together with the roller holder 202, and the pressing position shown in FIG. 5A for pressing the recording sheet 50 against the conveying belt 116 and the non-shown state shown in FIG. It moves with the roller holder 202 between the pressing positions. The driven rollers 201 are provided in the same number as the number of the conveying belts 116 and are arranged in the width direction. The driven rollers 201 are independently urged toward the respective conveying belts 116 so that the recording sheets 50 are respectively urged. The conveyor belt 116 is pressed.

  Here, the driven roller 201 includes a driven roller 201a, a driven roller 201b, and a driven roller 201c provided at positions corresponding to each of the plurality of conveyor belts 116a, the conveyor belt 116b, and the conveyor belt 116c, as shown in FIGS. The case where it consists of is illustrated.

  The roller holder 202 supports the driven roller 201 rotatably. As shown in FIG. 5, the roller holder 202 is urged by the urging member 207 to urge the driven roller 201 to the conveyance belt 116. When the roller holder 202 is pressed by the cam member 208 or when the pressing by the cam member 208 is released, the roller holder 202 is supported by the pinch holder 203 so as to be rotatable about the shaft 206 shown in FIG. Here, as shown in FIG. 4, the roller holder 202 is exemplified by a case where the roller holder 202a includes a plurality of driven rollers 201a, a driven roller 201b, and a driven roller 201c, the roller holder 202b, and the roller holder 202c.

  The pinch holder 203 supports the roller holder 202.

  The shaft portion 205 is rotatably supported by the roller holder 202.

  One end of the biasing member 207 is fixed to the support metal plate 204, and the other end biases the roller holder 202 toward the transport belt 116 to bias the driven roller 201 toward the transport belt 116. .

  The cam member 208 as the separation means is provided with a groove 211 as an engaged means to which the pin 210 of the movable side width regulating guide portion 3 is movably engaged on the surface facing the upstream side in the transport direction A. . The cam member 208 is supported by the pinch holder 203 so as to be movable only in the H direction in FIG.

  As shown in FIG. 4, the lock member 209 is urged and engaged with the cam member 208 by the urging member 214 to hold the cam member 208 in a predetermined position.

  The biasing member 214 biases the lock member 209 toward the cam member 208.

  The cam member 208, the lock member 209, and the urging member 214 having the above-described configuration are members necessary for separating the driven roller 201 from the conveyance belt 116.

  In the case of FIG. 4, the driven roller 201a is always in contact with the recording sheet 50 because the recording sheet 50 is always present on the conveying belt 116a. Therefore, the driven roller 201a does not need to be separated from the transport belt 116a. Therefore, the cam member 208, the lock member 209, and the urging member 214 are not arranged at positions corresponding to the driven roller 201a.

  On the other hand, the driven roller 201b and the driven roller 201c may not have the recording sheet 50 on the conveying belt 116b and the conveying belt 116c depending on the sheet width of the recording sheet 50. In this case, the driven roller 201b and the driven roller 201c are not in contact with the recording sheet 50. . Therefore, the driven roller 201b or the driven roller 201c needs to be separated from the conveyance belt 116b or the conveyance belt 116c. Therefore, the cam member 208, the lock member 209, and the biasing member 214 are disposed at positions corresponding to the driven roller 201b and the driven roller 201c.

<Operation of transport device>
The operation of the transfer apparatus 102 according to the first embodiment of the present invention will be described in detail with reference to FIGS.

  7A shows the same state as FIG. 5A in which the cam member 208c is supported by the lock member 209c at a position separated from the roller holder 202c. FIG. 7B shows a state where the cam member 208c is being pushed down by the pin 210 or is being pushed up. FIG. 7C shows the same state as FIG. 5B in which the cam member 208c is supported by the lock member 209c at a position where the roller holder 202c is pushed down. FIG. 7D shows a state where the pin 210 is engaged with the cam member 208b.

  The recording sheets 50 having various sheet widths conveyed by the conveying device 102 are set with reference to the sheet abutting surface 4 of the fixed side width regulating guide portion 2. At this time, for example, the recording sheet 50 having a narrow sheet width is on the conveying belt 116a and the conveying belt 116b close to the sheet abutting surface 4 in the width direction, but on the conveying belt 116c far from the sheet abutting surface 4 in the width direction. May not be.

  FIG. 7 shows the movement when the movable side width regulating guide portion 3 moves from the position set in accordance with the recording sheet 50 having a wide sheet width to the position set in accordance with the recording sheet 50 having a narrow sheet width. ing. In this case, before the operation is started, the pin 210 protruding from the movable side width regulating guide portion 3 is in the state of FIG. 7A where it is engaged with the groove 211c provided in the cam member 208c.

  From this state, the movable side width regulating guide portion 3 is moved in the direction I in FIG. 7A by the user's operation, whereby the pin 210 moves in the groove 211c. As a result, the cam member 208c is pushed down in the G direction in FIG. 7B, and after further contact with the roller holder 202c, is further pushed down in the G direction in FIG. 7B against the biasing force of the biasing member 207. It is done. Thus, in the configuration in which the recording sheet 50 is reliably pressed against the conveying belt 116c by the urging force of the urging member 207, the wear of the driven roller 201c can be suppressed.

  Further, the roller holder 202c moves in the G direction in FIG. 7B together with the cam member 208c after contacting the cam member 208c. Furthermore, the lock member 209c is pressed and moved in the J direction of FIG. 7B by the cam member 208c, and enters the state shown in FIG. 7B where the support of the cam member 208c is released.

  When the movable side width regulating guide portion 3 is further moved in the direction I in FIG. 7A by the user's operation from the state shown in FIG. 7B, the pin 210 further moves the groove 211c in the cam member 208c. As a result, it is further pushed down in the G direction of FIG. Thereby, the lock member 209c is in the state shown in FIG. 7C which supports the cam member 208c. Further, the roller holder 202c is rotated in the clockwise direction in FIG. 5 around the shaft 206 by the end portion being pushed in the G direction of FIG. 5B by the cam member 208c, and the driven roller 201c is separated from the conveying belt 116c. .

  When the movable side width regulating guide portion 3 is further moved from the state shown in FIG. 7C by the user operation in the direction I in FIG. 7A, the pin 210 is moved from the groove 211c of the cam member 208c to the cam member 208b. It moves to the groove 211b. At this time, the roller holder 202c is in the state shown in FIG. 7D, in which the cam member 208c is kept pressed because the movement of the cam member 208c is restricted by the convex portion 212c of the lock member 209c. As a result, the driven roller 201c is kept away from the transport belt 116c. In this way, the driven roller 201c is separated from the conveyance belt 116c in conjunction with the movement of the pin 210 that engages with the groove 211c of the cam member 208c with respect to the groove 211c.

  When the movable side width regulating guide portion 3 is aligned with the recording sheet 50 having a narrower sheet width, the movable side width regulating guide portion 3 further moves from the state shown in FIG. 7D in the I direction in FIG. 7A. As a result, the driven roller 201b is separated from the conveyor belt 116b by the same operation as described above. In this manner, the driven roller 201b is separated from the conveyance belt 116b in conjunction with the movement of the pin 210 engaged with the groove 211b of the cam member 208b with respect to the groove 211b. At this time, the roller holder 202c is maintained in the position of the roller holder 202c being pushed down by the convex portion 212c of the lock member 209c so as to maintain the position thereof, so that the driven roller 201c is also kept away from the conveying belt 116c.

  The conveyance device 102 drives the conveyance belt 116 after the above operation, so that the driven roller 201 rotates following the recording sheet 50 that moves in accordance with the movement of the conveyance belt 116. At this time, the driven roller 201c is separated from the driving conveyor belt 116c and does not follow the movement of the conveyor belt 116c, so that surface wear due to the edge of the suction hole 117 or the like is suppressed.

  As described above, according to the present embodiment, the driven roller 201 that is not in contact with the recording sheet 50 conveyed by the conveying belt 116 according to the size of the recording sheet 50 in the width direction is used, and the recording sheet 50 is used as the conveying belt 116. It is made to separate from the pressing position which presses toward. Thereby, abrasion of the driven roller 201 can be suppressed with a simple configuration.

  Further, according to the present embodiment, the driven roller 201 can be easily separated from the pressing position in conjunction with the movement of the movable side width regulating guide portion 3 in the width direction.

(Embodiment 2)
Since the configuration of the recording apparatus according to the second embodiment is the same as the configuration of the recording apparatus 100 according to the first embodiment except that the conveyance apparatus 1102 is provided instead of the conveyance apparatus 102, the description thereof is omitted. .

  Further, the transport apparatus 1102 according to the second embodiment of the present invention includes a guide unit 1103, a transport mechanism unit 1104, and a drive control unit 1105.

<Configuration of guide section>
The configuration of the guide unit 1103 according to Embodiment 2 of the present invention will be described in detail with reference to FIG.

  8 that are the same as those in FIG. 2 are assigned the same reference numerals, and descriptions thereof are omitted. Further, the description and description of portions of the guide portion 1103 that have the same configuration as the guide portion 103 are omitted.

  The guide unit 1103 includes a feeding base 1, a fixed side width regulation guide unit 2, a movable side width regulation guide unit 3, a rack gear 301, an idler gear 303, an idler gear 304, a volume sensor gear 305, and an electronic volume sensor. 306.

  The fixed side width regulation guide portion 2 includes an engagement portion 302 that engages with the rack gear 301.

  The rack gear 301 is engaged with the engaging portion 302, the idler gear 303, and the idler gear 304 of the movable side width restriction guide portion 3, and moves in the direction D in FIG. 8 in conjunction with the movement of the movable side width restriction guide portion 3. .

  The idler gear 303 is connected to the rack gear 301 and the volume sensor gear 305.

  The idler gear 304 is connected to the rack gear 301 and the volume sensor gear 305.

  The volume sensor gear 305 is rotatably engaged with an idler gear 303, an idler gear 304, and a rotation shaft (not shown) of the electronic volume sensor 306.

  An electronic volume sensor 306 serving as a detection unit outputs a voltage signal corresponding to the rotation of the rotating shaft engaged with the volume sensor gear 305.

<Configuration of transport mechanism>
The configuration of the transport mechanism unit 1104 according to Embodiment 2 of the present invention will be described in detail with reference to FIGS. 9 and 10.

  10A shows a state in which the driven roller 201 is in contact with the recording sheet 50 when the recording sheet 50 exists between the conveyance belt 116 and the driven roller 201. FIG. FIG. 10B shows a state where the driven roller 201 is separated from the conveying belt 116 when the recording sheet 50 is not present between the conveying belt 116 and the driven roller 201.

  9 and 10, parts having the same configurations as those in FIGS. 4 to 6 are denoted by the same reference numerals, and description thereof is omitted.

  The conveyance mechanism unit 1104 includes a conveyance belt 116, a driven roller 201, a roller holder 202, a support sheet metal 204, a shaft unit 205, a drive unit 132, a suction fan 133, a biasing member 207, and a latching solenoid 307. And a plunger 309.

  When the roller holder 202 is pressed by the plunger 309 or released by the plunger 309, the roller holder 202 is supported by the pinch holder 203 so as to be rotatable about the shaft 206 shown in FIG. It rotates together with the roller 201.

  A latching solenoid 307 is attached to the pinch holder 203.

  The shaft portion 205 is rotatably supported by the roller holder 202.

  The latching solenoid 307 includes a permanent magnet (not shown). The latching solenoid 307 is energized under the control of the CPU 1106 of the drive control unit 1105 described later, and moves the plunger 309 in the G direction of FIG. The latching solenoid 307 energizes the solenoid once in the direction in which the plunger 309 is attracted by the control of the CPU 1106, thereby holding the plunger 309 in the attracted state by the permanent magnet even when the solenoid is not energized.

  The plunger 309 serving as the separation means is not projected from the roller holder 202 by the action of the latching solenoid 307 as shown in FIG. It will be in the protrusion state of b).

<Configuration of drive control unit>
The configuration of the drive control unit 1105 according to Embodiment 2 of the present invention will be described in detail with reference to FIG.

  A drive control unit 1105 controls driving of the transport mechanism unit 1104 and the like. The drive control unit 1105 includes a CPU 1106, a ROM 1107, and a RAM 1108.

  The CPU 1106 executes the control program stored in the ROM 1107 to control the operation of the entire printing apparatus including the transport mechanism unit 1104 while using the RAM 1108. In particular, the CPU 1106 determines the sheet width of the recording sheet 50 based on the voltage of the signal input from the electronic volume sensor 306 when executing the recording control process described below, and determines the sheeting solenoid 307 according to the determination result. Energize.

  The ROM 1107 stores a control program executed by the CPU 1106 and the like.

  A RAM 1108 is a memory that mainly provides a work area for the CPU 1106.

<Operation of transport device>
The operation of the transport device according to the second embodiment of the present invention will be described in detail with reference to FIGS. 9 to 11.

  The electronic volume sensor 306 of the guide unit 1103 outputs a voltage signal corresponding to the rotation of the rotating shaft that rotates in conjunction with the movement of the movable side width regulating guide unit 3 in the width direction by a user operation. The CPU 1106 of the drive control unit 1105 detects the voltage of the signal input from the electronic volume sensor 306 and determines the sheet width of the recording sheet 50 based on the detection result.

  The CPU 1106 controls the operation of the plunger 309 by energizing the latching solenoid 307 based on the determined sheet width.

  Specifically, the CPU 1106 energizes the latching solenoid 307 in the direction in which the plunger 309 is attracted so as not to press the roller holder 202 that supports the driven roller 201 corresponding to the conveyance belt 116 on which the recording sheet 50 is present. To do. As a result, the driven roller 201 is urged toward the recording sheet 50 by the urging member 207.

  Further, the CPU 1106 energizes the latching solenoid 307 so that the plunger 309 moves in the G direction in FIG. 10B, thereby supporting the roller holder that supports the driven roller 201 corresponding to the conveyance belt 116 without the recording sheet 50. 202 is pressed. At this time, the plunger 309 presses the roller holder 202 against the biasing force of the biasing member 207 by pressing the roller holder 202 with a pressing force larger than the biasing force of the biasing member 207. As a result, the driven roller 201 is separated from the conveyor belt 116 against the urging force of the urging member 207. As described above, in the configuration in which the recording sheet 50 is reliably pressed against the conveying belt 116 by the urging force of the urging member 207, the wear of the driven roller 201 can be suppressed.

  As described above, the driven roller 201 is separated from the conveying belt 116 according to the sheet width of the recording sheet 50 determined based on the detection result of the electronic volume sensor 306, thereby suppressing the wear of the driven roller 201 with a simple configuration. be able to.

<Recording control process>
The recording control process according to the second embodiment of the present invention will be described in detail with reference to FIG.

  FIG. 12 shows a recording control process in a recording apparatus having the conveying belt 116a, the conveying belt 116b, and the conveying belt 116c in the width direction of the recording sheet 50 to be conveyed.

  The recording control process shown in FIG. 12 is started at a timing when a main power source (not shown) of the recording apparatus is turned on.

  First, the recording apparatus receives a print command from a personal computer (S1).

  Next, the CPU 1106 of the drive control unit 1105 detects the voltage of the signal input from the electronic volume sensor 306 (S2).

  Next, the CPU 1106 obtains the sheet width of the recording sheet 50 based on the detected voltage (S3).

  Next, the CPU 1106 determines whether or not the sheet width is equal to or less than the threshold value Xmm (S4). Here, the threshold value X is the maximum value of the sheet width when there is no recording sheet 50 between the driven roller 201c and the conveyance belt 116c.

  When the sheet width is equal to or less than the threshold value Xmm (S4: Yes), the CPU 1106 energizes the latching solenoid 307c so as to move in the direction in which the plunger 309c protrudes (S5). Accordingly, the roller holder 202c is rotated clockwise in FIG. 10 with the shaft 206 as a rotation axis in order to be pressed in the G direction of FIG. 10B by the plunger 309c. Accordingly, the driven roller 201c is separated from the transport belt 116c.

  Next, the CPU 1106 determines whether or not the sheet width is equal to or smaller than the threshold Ymm (S6). Here, the threshold value Y is the maximum value of the sheet width when there is no recording sheet 50 between the driven roller 201b and the conveyance belt 116b.

  When the sheet width is equal to or smaller than the threshold Ymm (S6: Yes), the CPU 1106 energizes the latching solenoid 307b so that the plunger 309b moves in the protruding direction. Accordingly, the roller holder 202b is rotated clockwise in FIG. 10 by using the shaft 206 as a rotation axis in order to be pressed in the G direction of FIG. 10B by the plunger 309b. Accordingly, the driven roller 201b is separated from the transport belt 116b.

  Next, the CPU 1106 performs a printing operation (S7), and ends the recording control process after the printing is completed.

  On the other hand, when the sheet width is larger than Xmm (S4: No), the CPU 1106 energizes the latching solenoid 307c so as to move in the direction in which the plunger 309c is attracted (S9), and then performs the operation of step S8. Accordingly, the roller holder 202c is not pressed in the G direction in FIG. 10B by the plunger 309c. Accordingly, the driven roller 201c presses the recording sheet 50 toward the conveyance belt 116c.

  Further, when the sheet width is larger than Ymm (S6: No), the CPU 1106 energizes the latching solenoid 307b so as to move in the direction in which the plunger 309b is attracted (S10), and then performs the operation of step S8. Accordingly, the roller holder 202b is not pressed in the G direction in FIG. 10B by the plunger 309b. Accordingly, the driven roller 201b presses the recording sheet 50 toward the conveyance belt 116b.

  In the present embodiment, the driven roller 201 that is not in contact with the recording sheet 50 and the recording sheet 50 that are conveyed based on the width of the recording sheet 50 determined based on the detection result of the electronic volume sensor 306 are conveyed. It moves away from the pressing position which presses toward. As a result, when the recording roller 50 having various sheet widths is pressed toward the conveying belt 116 by the driven roller 201 and conveyed while preventing floating, the wear of the driven roller 201 can be suppressed with a simple configuration.

  Further, according to the present embodiment, the driven roller 201 can be easily separated from the pressing position in conjunction with the movement of the movable side width regulating guide portion 3 in the width direction.

  It goes without saying that the present invention is not limited to the first and second embodiments described above, and various modifications can be made without departing from the scope of the invention.

  Specifically, in the first and second embodiments, the recording sheet 50 is conveyed by the conveyance belt 116, but the recording sheet 50 may be nipped and conveyed by the driven roller 201 and the driving roller.

  In the first embodiment and the second embodiment, any configuration may be used as long as the driven roller 201 is separated from the conveying belt 116 when the recording sheet 50 is not present between the conveying belt 116 and the driven roller 201. But you can.

  In the first and second embodiments, the recording sheet 50 is pressed against the conveyance belt 116 by the driven roller 201. However, the recording sheet 50 is applied to the conveyance belt 116 by a pressing roller such as a driving roller other than the driven roller 201. You may press.

  In the first and second embodiments, the suction hole 117 is provided in the conveyance belt 116. However, the recording belt is provided with a plurality of driven rollers along the conveyance direction A without providing the suction hole in the conveyance belt. You may make it prevent the lift from 50 conveyance belts.

DESCRIPTION OF SYMBOLS 2 Fixed side width regulation guide part 3 Movable side width regulation guide part 4 Sheet | seat abutting surface 5 Shaft part 50 Recording sheet 100 Recording apparatus 102 Conveyance apparatus 103 Guide part 104 Conveyance mechanism part 106 Recording head 116 Conveyance belt 116a Conveyance belt 116b Conveyance belt 116c Conveying belt 117 Suction hole 132 Drive unit 133 Suction fan 201 Followed roller 201a Followed roller 201b Followed roller 201c Followed roller 202 Roller holder 202a Roller holder 202b Roller holder 202c Roller holder 203 Pinch holder 204 Support sheet metal 205 Shaft member 208 Shaft member 207 208b Cam member 208c Cam member 209 Lock member 209c Lock member 210 Pin 211 Groove 214 Energizing member 301 Rack gear 302 Engaging portion 303 Eye Ragia 304 idler gear 305 volume sensor gear 306 electronic volume sensor 307 latching solenoid 309 plunger 1102 conveying apparatus 1103 guide portion

Claims (7)

A transport device capable of transporting recording sheets having different sizes in the width direction perpendicular to the transport direction of the recording sheet,
Conveying means for conveying the recording sheet;
A plurality of pressing rollers arranged in the width direction while pressing the recording sheet conveyed by the conveying unit against the conveying unit at a pressing position;
Separating means for separating the pressing roller, which is not in contact with the recording sheet conveyed by the conveying means, from the pressing position according to the size of the recording sheet;
A conveying apparatus comprising: A regulation unit that regulates movement in the width direction of the recording sheet that moves in the width direction and is conveyed by the conveyance unit;
The spacing means is
In conjunction with the movement of the restricting means in the width direction, the pressing roller is separated from the pressing position;
The conveying apparatus according to claim 1. The regulating means is
Engaging means,
The spacing means is
The engaging means includes an engaged means that is movably engaged, and the pressing roller is separated from the pressing position in conjunction with the movement of the engaging means with respect to the engaged means;
The conveying apparatus according to claim 2. Detecting means for detecting movement of the restricting means in the width direction;
The spacing means is
Based on the detection result by the detection means, the pressing roller is separated from the pressing position,
The conveying apparatus according to claim 2. Biasing means for biasing the pressing roller toward the pressing position;
The spacing means is
Separating the pressing roller from the pressing position against the biasing force of the biasing means;
The conveying apparatus according to any one of claims 1 to 4, wherein the conveying apparatus is characterized in that The conveying means is
Intake holes for sucking the recording sheet to the conveying means,
The conveying apparatus according to claim 1, wherein The transport device according to any one of claims 1 to 6,
Recording means for recording an image on a recording sheet conveyed by the conveying device;
A recording apparatus comprising:

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