JP2018047962A - Image formation apparatus and recording medium supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image formation apparatus and conveyance apparatus which can be downsized in comparison to a technique of performing adjustment of pressure between a sorting roll and a delivery roll by using a unique drive source.SOLUTION: An image formation apparatus 10 includes: a pressing mechanism 400 which presses a delivery roll 310 to a sheet P supported by a support unit 402; a sorting mechanism 500 which has a sorting roll 510 and a facing roll 520 sorting the sheets P; an image formation unit 100 which forms images on the sheets P sorted by the sorting mechanism 500; and a pressure adjustment mechanism 600 which adjusts the pressure between the sorting roll 510 and the facing roll 520. The pressure adjustment mechanism 600 changes the physical relation between the sorting roll 510 and the facing roll 520 in conjunction with movement of the support unit 402.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an image forming apparatus and a recording medium supply apparatus.

  In Patent Document 1, a sheet of paper stored in a paper feed tray or the like is provided with a nudger roller that is pressed to the upper part of the sheet feeding section, and a sheet separating mechanism that is disposed downstream of the nudger roller. In the sheet feeding device that separates and feeds the sheet, a detection unit using a misfeed detection sensor and / or a double feed detection sensor is disposed at a predetermined position of a sheet conveyance path disposed in the downstream portion of the sheet feeding device. A control device for instructing a control operation based on the detected information, and a means for adjusting a nip pressure between a feed roller and a retard roller constituting the paper separating mechanism, and a detection device disposed in the paper conveyance path A paper feeding device of an image forming apparatus is described in which the nip pressure between both rollers is automatically adjusted according to information.

JP-A-5-32356

  The pressure between the scissor roll that rolls the recording medium and the scissor area forming member that is in contact with the scissor roll and forms a scissor area between the scissors roll depends on, for example, the type of the recording medium and the conveyance state of the recording medium. It is desirable to adjust.

  It is an object of the present invention to provide an image forming apparatus and a conveying apparatus that can be reduced in size as compared with a technique in which adjustment of pressure between a reed roll and a delivery roll is performed using a dedicated mechanism. .

  According to a first aspect of the present invention, there is provided a recording medium that includes a support portion that supports a recording medium in a stacked state from below in the direction of gravity, and is positioned at the top of the recording media in a stacked state. On the other hand, a pressing mechanism that presses the delivery roll that feeds the recording medium, a scissor roll that squeezes the recording medium fed by the delivery roll, and a scooping area that contacts the scissor roll and nips the recording medium between the scissors roll A wrinkle mechanism having a wrinkle region forming member that forms a sheet, an image forming unit that forms an image on a recording medium wound by the wrinkle mechanism, and a pressure between the wrinkle roll and the wrinkle region forming member A pressure adjustment mechanism, and the pressure adjustment mechanism is an image forming apparatus that changes a positional relationship between the heel roll and the heel region forming member in conjunction with the movement of the support portion.

  According to a second aspect of the present invention, the pressure adjusting mechanism rotates about a rotating shaft, the delivery roll is mounted on one side with respect to the rotating shaft, and the saddle roll on the other side with respect to the rotating shaft. The image forming apparatus according to claim 1, further comprising a rotating member on which is mounted.

  The present invention according to claim 3 further includes a drive transmission mechanism that transmits drive to the delivery roll and the saddle roll, and the drive transmission mechanism includes a first planetary gear mounted on the delivery roll; A second planetary gear mounted on the roll, and a sun gear that transmits drive to the first planetary gear and the front second planetary gear, and the sun gear is a rotating shaft of the rotating member. The image forming apparatus according to claim 2, wherein the image forming apparatus is arranged so as to be coaxial with the image forming apparatus.

  According to a fourth aspect of the present invention, the pressing mechanism includes a conversion mechanism that converts a rotational motion into a reciprocating motion for moving the support portion, and the drive transmission mechanism is connected to the first from the drive source. A first one-way clutch provided in a path for transmitting drive to the planetary gear and the second planetary gear, and a second one-way clutch provided in a path for transmitting drive from the drive source to the conversion mechanism When the drive source rotates in the first direction, the first one-way clutch transmits the drive, the feed roll and the saddle roll rotate, and the second When the one-way clutch disconnects the drive, the support does not drive, and the drive source rotates in the second direction, the first one-way clutch disconnects the drive, and the feed roll and the saddle roll Without rotation The second one-way clutch transmits the driving, the support portion is an image forming apparatus according to claim 3 wherein the movement.

  The present invention according to claim 5 is the image forming apparatus according to claim 4, wherein a DC motor is used as the drive source.

  According to a sixth aspect of the present invention, there is provided a support portion for supporting the recording medium in a stacked state from the lower side in the direction of gravity, and recording is performed on the recording medium positioned at the top of the recording media in the stacked state. A pressing mechanism that presses the delivery roll that feeds out the medium, a roll that rolls the recording medium fed by the feed roll, and a contact area that contacts the roll and forms a roll-up area for the recording medium between the rolls A scissor mechanism having a region forming member, and a pressure adjusting mechanism for adjusting the pressure between the scissor roll and the scissor region forming member, and the pressure adjusting mechanism is interlocked with the movement of the support portion. The recording medium supply device changes the positional relationship between the heel roll and the heel region forming member.

  According to the first aspect of the present invention, it is possible to provide an image forming apparatus that can be reduced in size as compared with a technique that adjusts the pressure between the roller roll and the delivery roll using a dedicated mechanism. Can do.

  According to the second aspect of the present invention, the configuration of the pressure adjusting mechanism that adjusts the pressure between the saddle roll and the delivery roll can be simplified as compared with the technique that does not include the rotating member.

  According to the third aspect of the present invention, even if the feed roll and the saddle roll are moved, it is possible to make it difficult to cause the meshing failure of the gear as compared with the technique not using the sun gear and the planetary gear.

  According to the fourth aspect of the present invention, the feed roll, the heel roll and the pressing mechanism can be driven by one drive source.

  According to the fifth aspect of the present invention, since the DC motor is used, the output can be controlled by controlling the current value.

  According to the sixth aspect of the present invention, there is provided a recording medium supply device that can be reduced in size as compared with a technique that adjusts the pressure between the saddle roll and the delivery roll using a dedicated mechanism. be able to.

1 is a diagram showing a configuration of an image forming apparatus used in a first embodiment of the present invention from the front side. It is a figure which shows the structure of the paper feeder used in the 1st Embodiment of this invention from the front side. It is a figure which shows the structure of the drive transmission mechanism used in the 1st Embodiment of this invention from the upper side (from the arrow AA side shown in FIG. 2). It is a figure which shows the gearwheel which the drive transmission mechanism used in the 1st Embodiment of this invention has from the front side (from the arrow BB side shown in FIG. 3). It is a block diagram which shows the control part used in the 1st Embodiment of this invention. It is a flowchart explaining the operation | movement of the 1st Embodiment of this invention. It is a figure which shows the drive transmission mechanism used by the 2nd Embodiment of this invention from the upper side. It is a figure which shows the conversion mechanism which the drive transmission mechanism used in the 2nd Embodiment of this invention has from the front side. It is a flowchart explaining the operation | movement of the 2nd Embodiment of this invention.

  Next, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows an image forming apparatus 10 according to an embodiment of the present invention. As shown in FIG. 1, the image forming apparatus 10 includes an image forming apparatus main body 12, and a recording medium that supplies the image forming unit 100 and paper P that is a recording medium into the image forming apparatus main body 12. A paper feeding device 300 as a feeding device is arranged.

  The image forming unit 100 forms an image on a sheet P that is a recording medium that is rolled by a folding mechanism 500 described later. The image forming unit 100 employs, for example, an electrophotographic method, and includes a photosensitive drum 102 that is an image holding member, a charging device 104 that charges the photosensitive drum 102, and a latent image that forms a latent image on the photosensitive drum 102. An image forming device 106, a developing device 108 that develops a latent image and forms a toner image, a transfer device 110 that transfers the toner image onto paper P, a cleaning device 112 that cleans the surface of the photosensitive drum 102, and a paper And a fixing device 120 that fixes the toner image to P.

  Details of the sheet feeder 300 will be described later.

  In the image forming apparatus main body 12, a paper transport path 200 used for transporting paper is formed. On the downstream side of the paper feeding path 300 in the paper conveyance direction of the paper conveyance path 200 and on the upstream side of the image forming unit 100, conveyance failure detection is a conveyance failure detection means for detecting a conveyance failure of the paper. A sensor 210 and a double feed detection sensor 220 that is a double feed detection means for detecting double feed of paper are arranged.

  FIG. 2 shows a paper feeding device 300. As shown in FIG. 2, the sheet feeding device 300 includes a delivery roll 310, a pressing mechanism 400, a hook mechanism 500, a pressure adjustment mechanism 600, a drive transmission mechanism 700 (see FIG. 3), a control Part 900. The delivery roll 310 rotates to send the paper P to the paper transport path 200.

  The pressing mechanism 400 has a support portion 402. The support unit 402 supports the stacked sheets P from the lower side in the direction of gravity. Further, the support unit 402 is supported so as to be rotatable with respect to the sheet feeding apparatus main body 302 using a hinge 404. The pressing mechanism 400 presses the delivery roll 310 against the uppermost sheet P among the stacked sheets P.

  The pressing mechanism 400 further includes an urging unit 408. As the biasing means 408, for example, a coil spring can be used. The urging unit 408 urges the delivery roll 310 in the direction of the stacked sheets P.

  The pressing mechanism 400 further includes a push-up member 412. The push-up member 412 pushes up the support portion 402 by rotating while being in contact with the lower portion of the support portion 402 in the direction of gravity. When the support portion 402 is pushed up by the push-up member 412, the support portion 402 rotates about the hinge 404 in the direction of the arrow a <b> 1.

  The push-up member 412 receives drive transmission from the motor 420 that is a drive source, and rotates around the shaft 414, for example, in the arrow b1 direction.

  The scissor mechanism 500 has a scissor roll 510. The reed roll 510 rotates in the direction of the arrow c <b> 1, turns the paper P sent out by the sending roll 310, and suppresses double feeding of the paper P. The heel roll 510 has the same outer diameter as the delivery roll 310. Here, the multi-feed means that a plurality of sheets P are fed to the sheet conveyance path 200 side in a state where they are stacked.

  The scissor mechanism 500 has a counter roll 520 that is a scissor region forming member. The facing roll 520 is disposed so as to face the heel roll 510. The opposing roll 520 is in contact with the reed roll 510 and forms a nip N that is a reed area for separating the paper P with the reed roll 510. A clutch (not shown) is attached to the opposing roll 520, and the opposing roll 520 rotates in the direction of the arrow d1 when a force exceeding a predetermined value is applied.

  The facing roll 520 is attached to the sheet feeding apparatus main body 302 so that it can rotate, for example.

  Instead of using the facing roll 520 as the heel region forming member, for example, a pad formed at least on the front side from rubber or the like may be used as the heel region forming member.

  The pressure adjustment mechanism 600 adjusts the pressure between the heel roll 510 and the opposing roll 520. The pressure adjustment mechanism 600 includes a rotating member 610. The rotating member 610 is supported by the shaft member 612 and rotates around the shaft member 612, for example, in the arrow e1 direction.

  On the downstream side of the shaft member 612 in the sheet conveyance direction of the rotating member 610, the above-described saddle roll 510 is mounted so as to be able to rotate. Further, the above-described delivery roll 310 is mounted on the upstream side of the shaft member 612 in the paper conveyance direction of the rotation member 610 so as to be able to rotate. Further, the distance from the center of the shaft member 612 to the rotation center of the heel roll 510 is equal to the distance from the center of the shaft member 612 to the rotation center of the delivery roll 310. Further, the rotation center of the delivery roll 310, the center of the shaft member 612, and the rotation center of the heel roll 510 are arranged on one straight line.

  The pressure adjustment mechanism 600 configured as described above changes the positional relationship between the heel roll 510 and the facing roll 520 in conjunction with the movement of the support portion 402. More specifically, when the support portion 402 rotates in the arrow a1 direction, the rotating member 610 rotates in the arrow e1 direction, and the heel roll 510 approaches the opposing roll 520. In this case, the pressure between the heel roll 510 and the opposing roll 520 increases.

  On the other hand, when the support portion 402 rotates in the direction of arrow a2, the rotating member 610 rotates in the direction of arrow e2, and the heel roll 510 moves away from the opposing roll 520. In this case, the pressure between the heel roll 510 and the opposing roll 520 becomes small.

  FIG. 3 shows a drive transmission mechanism 700. The drive transmission mechanism 700 is a mechanism for transmitting drive to the above-described delivery roll 310 and the above-described saddle roll 510. As shown in FIG. 3, the drive transmission mechanism 700 includes a planetary gear G22 that is a first planetary gear, a planetary gear G24 that is a second planetary gear, and a sun gear G20. The drive transmission mechanism 700 has an internal gear constituting the planetary gear mechanism together with the planetary gear G22, the planetary gear G24, and the sun gear G20, but the illustration of the internal gear is omitted.

  The planetary gear G22 is attached to the shaft portion 312 of the delivery roll 310. Further, the planetary gear G24 is attached to the shaft portion 512 of the kite roll 510.

  The sun gear G20 transmits drive to the planetary gear G22 and the planetary gear G24. The sun gear G20 is arranged so as to be coaxial with the rotation axis of the rotation member 610 (the central axis of the shaft member 612). Further, the sun gear G20 has a shaft portion 712 attached to, for example, a main body frame (not shown) that forms a part of the paper feeding device main body 302 or the image forming apparatus main body 12. The sun gear G20 is connected to a motor 720 that is a drive source.

  When the drive is transmitted to the planetary gear G22 using the drive transmission mechanism 700, the delivery roll 310 rotates in the direction of the arrow shown in FIG. 2, and the drive is transmitted to the planetary gear G24 using the drive transmission mechanism 700. Thus, the scissors roll 510 rotates in the direction of the arrow c1 (see FIG. 2).

  FIG. 4 shows a planetary gear G22, a planetary gear G24, and a sun gear G20. When the push-up member 412 pushes up the support portion 402, the delivery roll 310 moves upward and moves in the direction of the arrow f1 (see FIG. 2) about the shaft member 612, the planetary gear G22 is also integrated with the delivery roll 310. As shown in FIG. When the sending roll 310 moves in the direction of arrow f2 (see FIG. 3), the planetary gear G22 also moves in the direction of arrow f2 together with the sending roll 310.

  At this time, since the planetary gear mechanism is used, even if the planetary gear G22 moves, the meshing failure between the planetary gear G22 and the sun gear G20 hardly occurs.

  Further, the push-up member 412 pushes up the support portion 402, the delivery roll 310 moves in the direction of arrow f1, the rotating member 610 rotates in the direction of arrow e1, and the heel roll 510 moves in the direction of arrow g1 (see FIG. 2). Then, the planetary gear G24 also moves in the direction of the arrow g1 together with the coffin roll 510. Further, when the reed roll 510 moves in the direction of the arrow g2 (see FIG. 2), the planetary gear G24 also moves in the direction of the arrow g2.

  At this time, since the planetary gear mechanism is used, even if the planetary gear G24 moves, the meshing failure between the planetary gear G24 and the sun gear G20 hardly occurs.

  FIG. 5 is a block diagram showing the control unit 900. As illustrated in FIG. 5, the control unit 900 includes a control circuit 902, and image data is input to the control circuit 902 via the communication interface 904, and the image forming unit 100 forms an image under the control of the control circuit 902. To do. The control circuit 902 receives the output from the conveyance failure detection sensor 210 and the output from the double feed detection sensor 220, and the motor 420 and the motor 720 are controlled by the output from the control circuit 902.

  FIG. 6 is a flowchart showing control of the sheet feeding device 300. As shown in FIG. 6, after confirming the input of the image data in step S <b> 10, the control circuit 902 determines whether a conveyance failure of the paper P has occurred based on the output from the conveyance failure detection sensor 210. If it is determined that a conveyance failure of the paper P has occurred, the process proceeds to step S14. If it is determined that a conveyance failure of the paper P has not occurred, the process proceeds to step S20.

  In step S14, the control circuit 902 controls the motor 420 to increase the pressure between the heel roll 510 and the facing roll 520. That is, by driving the motor 420 and rotating the push-up member 412, the support portion 402 is rotated in the arrow a1 direction, the rotating member 610 is rotated in the arrow e1 direction, and the reed roll 510 is moved in the arrow g1 direction.

  In step S16, the control circuit 902 determines whether or not a double feed of the paper P has occurred based on the output from the double feed detection sensor 220. If it is determined that the double feed of the paper P has occurred, In step S18, if it is determined that the double feeding of the paper P has not occurred, the process proceeds to step S20.

  In step S18, the control circuit 902 controls the motor 420 to decrease the pressure between the heel roll 510 and the facing roll 520. That is, by driving the motor 420 and rotating the push-up member 412, the support portion 402 is rotated in the arrow a2 direction, the rotating member 610 is rotated in the arrow e2 direction, and the reed roll 510 is moved in the arrow g2 direction.

  In step S20, the control circuit 902 determines whether the image data is the last image data in the series of image data. If it is determined that the image data is the last image data, the control circuit 902 ends the series of controls, If it is determined that it is not image data, the process returns to step S12 and the above-described processing is repeated.

  FIG. 7 shows a paper feeder 300 used in the second embodiment of the present invention. In the following description, the difference between the first embodiment and the second embodiment described above will be described, and the description of the parts common to the first embodiment in the second embodiment will be omitted.

  In the first embodiment, the motor 420 is used for driving the pressing mechanism 400 and the pressure adjusting mechanism 600, and the motor 720 is used for driving the delivery roll 310 and the saddle roll 510. On the other hand, in the second embodiment, the motor 720 is used not only for driving the delivery roll 310 and the saddle roll 510 but also for driving the pressing mechanism 400 and the pressure adjusting mechanism 600. It is done. The motor 720 is preferably a DC motor (direct current motor).

  In the second embodiment, the pressing mechanism 400 includes a conversion mechanism 450. The conversion mechanism 450 is a mechanism that converts the rotational motion into a reciprocating motion for moving the support portion 402. Details of the conversion mechanism 450 will be described later.

  In the second embodiment, the drive transmission mechanism 700 includes a clutch 730 that is a first one-way clutch and a clutch 740 that is a second one-way clutch. The clutch 730 is provided in a path for transmitting drive from the motor 720 to the planetary gear G22 and the planetary gear G24. The clutch 740 is provided in a path for transmitting drive from the motor 720 to the conversion mechanism 450.

  FIG. 8 shows the conversion mechanism 450. The conversion mechanism 450 includes a rotating member 452 that rotates when a drive is transmitted from the motor 720, and a connecting member 454 that connects the rotating member 452 and the support portion 402. One end of the connecting member 454 is connected to the rotating member 452, and the other end is connected to the support portion 402. The conversion mechanism 450 includes a guide plate 456 that guides the linear motion of the support portion 402. A long guide hole 458 is formed in the guide plate 456.

  The conversion mechanism 450 converts the rotational motion of the rotating member 452 indicated by the arrow h1 into the linear motion of the support portion 402 indicated by the arrow i.

  In the drive transmission mechanism 700, when the motor 720 rotates in the first direction, the clutch 730 transmits the drive and the feed roll 310 and the saddle roll 510 rotate, but the clutch 740 disconnects the drive. Driving is not transmitted to the support portion 402, and the support portion 402 does not move.

  On the other hand, in the drive transmission mechanism 700, when the motor 720 rotates in the second direction, the first one-way clutch disconnects the drive, so the drive is not transmitted to the delivery roll 310 and the saddle roll 510, and the delivery roll 310 And the reed roll 510 does not rotate. Further, when the motor 720 rotates in the second direction, the clutch 740 transmits drive, and the drive is transmitted to the support portion 402, so that the support portion 402 moves linearly as indicated by an arrow i.

  FIG. 9 is a flowchart illustrating control of the sheet feeding device 300 according to the second embodiment. As shown in FIG. 9, after confirming the input of the image data in step S102, in step S104, the control circuit 902 starts the rotation of the motor 720 in the first direction, and the feed roll 310, the saddle roll 510, and so on. Start rotating.

  After confirming that the image formation is completed in step S106, in step S108, the control circuit 902 stops the rotation of the motor 720 and stops the rotation of the feed roll 310 and the reed roll 510.

  In the next step S110, the control circuit 902 determines whether one of the conveyance failure of the paper P or the double feeding of the paper P has occurred based on the output of the conveyance failure detection sensor 210 and the output of the double feed detection sensor 220. If it is determined that neither the conveyance failure of the paper P nor the double feeding of the paper P has occurred, the process proceeds to step S114, and either the poor conveyance of the paper P or the double feeding of the paper P has occurred. If it is determined that there is, the process proceeds to step S112.

  In step S112, the control circuit 902 rotates the motor 720 in the second direction, and moves the support unit 402 so that poor conveyance of the paper P and double feeding of the paper P are less likely to occur.

  At this time, if it is determined in step S110 that the conveyance failure of the paper P has occurred, the control circuit 902 stops the support unit 402 at a position where the pressure between the saddle roll 510 and the opposing roll 520 becomes weak. The timing for stopping the motor 720 is controlled. If it is determined in step S110 that the paper P has been double-fed, the control circuit 902 stops the support unit 402 at a position where the pressure between the saddle roll 510 and the opposing roll 520 becomes strong. The timing for stopping the motor 720 is controlled.

  In step S114, the control circuit 902 determines whether the image data is the last image data in the series of image data. If the control circuit 902 determines that the image data is the last image data, the control circuit 902 ends the series of controls, If it is determined that it is not image data, the process returns to step S104 and the above-described processing is repeated.

DESCRIPTION OF SYMBOLS 10 ... Image forming apparatus 100 ... Image forming part 300 ... Paper feeding apparatus 310 ... Sending roll 400 ... Pushing mechanism 402 ... Support part 420 ... Motor 450 ... Conversion mechanism 452... Rotating member 454... Linking member 456... Guide plate 500... 捌 mechanism 510 ... 捌 roll 520. ... Shaft member 700 ... Drive transmission mechanism 720 ... Motor 730 ... Clutch 740 ... Clutch G20 ... Sun gear G22 ... Planet gear G24 ... Planet gear

Claims (6)

A delivery roll that includes a support portion that supports the recording medium in a stacked state from below in the direction of gravity, and that feeds the recording medium to the recording medium positioned at the top of the recording medium in the stacked state A pressing mechanism for pressing
A scissor mechanism that has a scissor roll that scoops the recording medium sent out by the delivery roll, and a scissor area forming member that contacts the scissor roll and forms a scooping area for scooping the recording medium between the scissors roll;
An image forming unit that forms an image on a recording medium rolled by the folding mechanism;
A pressure adjusting mechanism for adjusting the pressure between the heel roll and the heel region forming member;
Have
The pressure adjusting mechanism is an image forming apparatus that changes a positional relationship between the heel roll and the heel region forming member in conjunction with the movement of the support portion.   The pressure adjusting mechanism includes a rotating member that rotates about a rotating shaft, the feeding roll is mounted on one side of the rotating shaft, and the heel roll is mounted on the other side of the rotating shaft. The image forming apparatus according to claim 1. A drive transmission mechanism for transmitting drive to the delivery roll and the heel roll;
The drive transmission mechanism is
A first planetary gear mounted on the delivery roll;
A second planetary gear mounted on the saddle roll;
A sun gear that transmits drive to the first planetary gear and the front second planetary gear;
Have
The image forming apparatus according to claim 2, wherein the sun gear is disposed so as to be coaxial with a rotation axis of the rotating member. The pressing mechanism has a conversion mechanism that converts a rotational motion into a reciprocating motion for moving the support portion;
The drive transmission mechanism is
A first one-way clutch provided in a path for transmitting drive from a drive source to the first planetary gear and the second planetary gear;
A second one-way clutch provided in a path for transmitting drive from the drive source to the conversion mechanism;
Have
When the drive source rotates in the first direction, the first one-way clutch transmits the drive, the feed roll and the saddle roll rotate, and the second one-way clutch disconnects the drive. And the support part does not drive,
When the drive source rotates in the second direction, the first one-way clutch disconnects the drive, the feed roll and the saddle roll do not rotate, and the second one-way clutch transmits the drive, The image forming apparatus according to claim 3, wherein the support portion moves.   The image forming apparatus according to claim 4, wherein a DC motor is used as the drive source. A pressing mechanism that includes a support portion that supports the recording medium in a stacked state from below in the direction of gravity, and that presses a delivery roll that sends the recording medium to the recording medium positioned at the top of the recording medium in the stacked state When,
A scissor mechanism that has a scissor roll that scoops the recording medium sent out by the delivery roll, and a scissor area forming member that contacts the scissor roll and forms a scooping area for scooping the recording medium between the scissors roll;
A pressure adjusting mechanism for adjusting the pressure between the heel roll and the heel region forming member;
Have
The pressure adjusting mechanism is a recording medium supply device that changes a positional relationship between the heel roll and the heel region forming member in conjunction with the movement of the support portion.

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