JP2009298509A - Sheet conveying device and image processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet conveying device capable of reducing loads applied to a member. <P>SOLUTION: This sheet conveying device 200 is provided with a shutter 210 for limiting the insertion of a sheet P by being brought into a front edge of the sheet P, a discharge mechanism 220 for moving the shutter 210 to a limitation position where the insertion of the sheet P is limited or a non-limitation position where the insertion of the sheet P is not limited, a delivering mechanism 230 for delivering the sheet P when the shutter 210 is moved to the non-limitation position, a conveying mechanism 240 for conveying the sheet P delivered by the delivering mechanism 230, a retard pad 250 for separating the sheets P double-fed by the delivering mechanism 230 one by one by holding the sheets P together with the conveying mechanism 240, and an interlocking mechanism 260 for making the movement of the retard pad 250 interlocked with the movement of the shutter 210. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sheet conveying apparatus and an image processing apparatus.

  As conventional sheet conveying apparatuses, there are sheet conveying apparatuses described in Patent Documents 1 to 4, for example. The sheet conveying apparatus described in Patent Document 1 sandwiches a sheet by a sheet feeding table that is supported by a shaft and places a sheet thereon, a sheet feeding roller that conveys a sheet placed on the sheet feeding table, and a sheet feeding roller. And a separation pad for separating the sheets one by one. In this sheet conveying apparatus, when the sheet feeding table is moved to the sheet feeding position with the shaft as a fulcrum, the separation pad comes into contact with the sheet feeding roller to convey the sheet placed on the sheet feeding table. On the other hand, when the paper feed table is moved to the storage position, the separation pad is separated from the paper feed roller. For this reason, the contact state between the separation pad and the paper feed roller is released, so that the paper feed roller is prevented from being deformed.

  The sheet conveying apparatus described in Patent Document 2 is configured to hold a sheet one by one by sandwiching the sheet between a sheet feeding cassette on which a sheet is loaded, a sheet feeding roller that conveys a sheet placed on a sheet feeding table, and a sheet feeding roller. And a separating / contacting means for moving the friction plate. In this sheet conveying apparatus, the friction plate is moved so that no force is applied to the sheet except during recording paper conveyance. Therefore, the front end of the sheet is prevented from being deformed.

  The sheet conveying apparatus described in Patent Document 3 includes a feed roller that conveys a sheet formed of a rubber material, a retard roller that separates the sheets one by one by sandwiching the sheet between the feed rollers, and a feed of the retard roller. The pressure means for contacting the roller and the contact releasing means for separating the retard roller from the feed roller were provided. In this sheet conveying apparatus, the retard roller is brought into contact with the feed roller in a predetermined case, and the retard roller is separated from the feed roller. Therefore, the plastic deformation of the rubber material of the feed roller and the bleeding of the oil component are prevented.

A sheet conveying apparatus described in Patent Document 4 includes a sheet feeding roller that conveys a sheet, a sheet discharging roller that conveys a sheet downstream of the sheet feeding roller in the sheet conveying direction, and a driving force from the sheet feeding roller to the sheet discharging roller And a transmission roller for transmitting. In this sheet conveying apparatus, the hardness of the transmission roller is higher than the hardness of the paper feeding roller. Therefore, the oil component of the transmission roller is prevented from moving from the transmission roller to the paper feeding roller.
Japanese Patent Application Laid-Open No. 07-237769 JP 09-240863 A Japanese Patent Laid-Open No. 06-171784 JP 2000-072278 A

  The present invention has been made on the basis of the technical background as described above, and an object of the present invention is to provide a technique for reducing a load applied to a member.

  According to the first aspect of the present invention, there is provided a restricting unit that restricts insertion of a sheet beyond a predetermined position, and a first position that restricts insertion of the sheet or the second that does not restrict insertion of the sheet. A moving means for moving the restricting means to a position; a feeding means for sending the sheet when the restricting means is moved to the second position; and a conveying means for conveying the sheet fed by the feeding means. Separating means for separating the sheets fed by the feeding means between the conveying means one by one, and interlocking means for interlocking movement of the separating means with movement of the restricting means. This is a sheet conveying apparatus.

  According to a second aspect of the present invention, in the first aspect of the invention, the interlocking unit is configured such that the limiting unit moves to the second position when the limiting unit moves to the first position. Moving the separation means to a position where the pressure exerted on the conveying means by the separating means when the restricting means is moved to the first position than the pressure exerted on the conveying means by the separating means; It is characterized by.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the interlocking unit includes a support unit that supports the separating unit, and the limiting unit moves from the first position to the second position. A first moving member that moves the support means as it moves to a second position, and a second member that moves the support means as the restriction means moves from the second position to the first position. And a moving member.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects of the present invention, a member of a part of the conveying unit that contacts the separating unit and a conveying unit of the separating unit are in contact with each other. The member of a part is the same material, It is characterized by the above-mentioned.

  According to a fifth aspect of the present invention, there is provided an image processing apparatus comprising the sheet conveying apparatus according to any one of the first to fourth aspects.

  According to the first aspect of the present invention, the load on the member can be reduced as compared with the case where the present invention is not applied.

  According to invention of Claim 2, compared with the case where this invention is not applied, it can prevent that the shape or physical property of a conveyance means or a separation means changes.

  According to the third aspect of the present invention, the interlocking means can be configured with a simple configuration as compared with the case where the present invention is not applied.

  According to the invention described in claim 4, the manufacturing cost of the apparatus can be reduced as compared with the case where the present invention is not applied.

  According to the fifth aspect of the present invention, the load on the member can be reduced as compared with the case where the present invention is not applied.

(1) First Embodiment (Configuration of MFP)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, a multifunction peripheral (image processing apparatus) 100 including a sheet conveying apparatus 200 will be described with reference to the drawings. Here, the multifunction peripheral 100 having three functions of copying (copying), FAX, and printing (printing) will be described. FIG. 1 is a schematic configuration diagram illustrating a multifunction machine.

  An MFP 100 includes a placement member 101 having a flat surface for setting a document or printing paper as a transported sheet, and a sheet transport device for transporting the sheet set on the placement member 101 into the MFP 100. 200. Details of the sheet conveying apparatus 200 will be described later.

  The sheet set on the arrangement member 101 is conveyed in the multifunction peripheral 100 by the sheet conveying device 200 and the conveying roll mechanism 102 and further conveyed on the conveying path 103 or 104. A conveyance path 103 is a conveyance path for reading an image on a document. The conveyance path 104 is a conveyance path when an image is formed (printed) on the conveyed printing paper. In FIG. 1, a mechanism for selectively using the two transport paths is not shown.

  In the middle of the conveyance path 103, an optical system 105 for imaging a linear region is disposed. Using this optical system 105, the CCD 106 captures an image while scanning the document. The CCD 106 outputs a data signal of the captured image to the image data creation circuit 107. The image data creation circuit 107 creates image data in a predetermined data format based on the data signal output from the CCD 106, and sends it to the image forming unit control circuit 108, the FAX transmission / reception unit 109, and the like. The document from which the image has been read is discharged to the document discharge unit 120 below the arrangement member 101.

  The image forming unit control circuit 108 takes in image data sent from a terminal (for example, a personal computer) into the multifunction peripheral 100 via a USB standard line or a LAN line. The image forming unit control circuit 108 controls the image forming unit 110 to form (print) an image on the sheet based on the sent image data. A FAX transmission / reception unit 109 receives FAX image data received from a communication line and sends it to the image forming unit control circuit 108. Further, the FAX transmission / reception unit 109 transmits the image data of the original read by the CCD 106 to another FAX apparatus via a communication line.

  The image forming unit 110 includes a photosensitive drum 111, a developing device 112, an exposure scanning device 113, a transfer belt 114, a transfer roll 115, and a backup roll 116. Scanning light is applied to the photosensitive drum 111 from an exposure scanning device 113 having a laser irradiation device and an optical system when rotating, and an electrostatic latent image is formed on the surface thereof. According to the charge distribution state of the electrostatic latent image, toner is supplied from the developing device 112, and a toner image is formed on the photosensitive drum 111. This toner image is transferred to the transfer belt 114 and conveyed to the transfer roll 115 and the backup roll 116 by the circulation of the transfer belt 114. The transfer roll 115 has a built-in heater, and the transfer toner image on the transfer belt 114 is transferred onto the sheet by sandwiching the sheet and the transfer belt 114 between the transfer roll 115 and the backup roll 116. At this time, the toner image transferred onto the sheet is fixed on the sheet by being heated. In this way, a predetermined image is formed (printed) on the print sheet. The printed sheet is discharged to the sheet discharge unit 117.

  There are two sheet supply paths. One of them is the conveyance path 104 described above. The conveyance path 104 is used when a sheet is set on the arrangement member 101 and printed on the sheet. Another sheet supply path is a conveyance path 118. A conveyance path 118 is a conveyance path for feeding a sheet from the sheet supply apparatus 119 to the image forming unit 110.

(MFP operation: copy operation)
When the original to be copied is set on the arrangement member 101 and the operation is started, the original is conveyed one by one into the copying machine 100 by the sheet conveying device 200. The document transported into the multifunction peripheral 100 is transported along the transport path 103, and an image on the document is read by the CCD 106 via the optical system 105 at that time. The image read by the CCD 106 is converted into image data of a predetermined standard by the image data creation circuit and sent to the image forming unit control circuit 108. Upon receiving this image data, the image forming unit control circuit 108 controls the image forming unit 110 to form (print) an image. At this time, the image forming unit 110 forms (prints) an image on a sheet stored in the sheet supply device 119.

(MFP operation: FAX transmission)
When a document to be transmitted by FAX is set on the arrangement member 101 and the operation is started, the document is conveyed one by one into the multi-function device 100 by the sheet conveying device 200. The document transported into the multifunction peripheral 100 is transported along the transport path 103, and an image on the document is read by the CCD 106 via the optical system 105 at that time. The image read by the CCD 106 is converted into image data of a predetermined standard by the image data creation circuit 107 and sent to the FAX transmission / reception unit 109. This image data is converted into data of the FAX communication standard by the FAX transmission / reception unit 109 and transmitted from the FAX transmission / reception unit 109 to the counterpart FAX apparatus via the communication line.

(MFP operation: FAX reception)
When the FAX transmission / reception unit 109 receives the FAX signal, the image data is sent to the image forming unit control circuit 108. Receiving the FAX image data, the image forming unit control circuit 108 controls the image forming unit 110 to form (print) an image. At this time, the image forming unit 110 forms (prints) an image on a print sheet set on the arrangement member 101 or a print sheet stored in the sheet supply device 119.

(MFP operation: printing operation)
When image data is transmitted from a terminal (not shown) to the multifunction peripheral 100 via a line (not shown), the image data is received by the image forming unit control circuit 108. The image forming unit control circuit 108 controls the image forming unit 110 based on the received image data. In response to this control, the image forming unit 110 forms (prints) an image on a sheet set on the arrangement member 101 or a sheet stored in the sheet supply device 119.

(Configuration of sheet conveying device)
Next, the sheet conveying apparatus 200 will be described with reference to the drawings. FIG. 2 is a perspective view illustrating the sheet conveying apparatus. FIG. 3 is a perspective view showing the transport surface. FIG. 4 is a cross-sectional view showing a case where the shutter is moved to the restriction position. FIG. 5 is a cross-sectional view showing a case where the shutter is moved to the unrestricted position.

  As shown in FIG. 2, the sheet conveying apparatus 200 includes a conveying surface 201, a shutter (restricting means) 210, a discharge mechanism (moving means) 220, a feeding mechanism (feeding means) 230, a conveying mechanism (conveying means) 240, a retard pad. (Separation means) 250 and an interlocking mechanism (interlocking means) 260 are provided. The sheet conveying apparatus 200 conveys a sheet P such as a document or printing paper.

  The conveyance surface 201 is a member for conveying the sheet P in cooperation with the conveyance mechanism 240 and the like. That is, the sheet P is conveyed on the conveyance surface 201. As shown in FIGS. 2 to 5, the transport surface 201 is provided with a shutter hole 202 and a pad hole 203. The shutter hole 202 is a hole for inserting the shutter 210. The pad hole 203 is a hole for inserting the retard pad 250.

  As shown in FIGS. 4 and 5, the shutter 210 is provided upstream of the transport mechanism 240 and the retard pad 250 in the transport direction (arrow A direction) of the sheet P. The shutter 210 has a convex portion (first moving member) 211. The shutter 210 has a T-shaped cross section. A discharge mechanism 220 is connected to one end of the shutter 210. The shutter 210 protrudes from the shutter hole 202 by the discharge mechanism 220 and is moved to the restriction position (first position), and is retracted from the shutter hole 202 and moved to the non-restriction position (second position). As shown in FIG. 4, when the shutter 210 is moved to the restriction position, the shutter 210 contacts the front edge of the sheet P and restricts the sheet P from being inserted beyond a predetermined position. On the other hand, as shown in FIG. 5, the shutter 210 does not contact the sheet P and does not restrict insertion of the sheet P when moving to the non-restricted position.

  As shown in FIGS. 4 and 5, the discharge mechanism 220 is provided on the downstream side of the conveyance mechanism 240 in the conveyance direction (arrow A direction) of the sheet P. The discharge mechanism 220 includes a drive shaft 221, a rubber roll 222, a torque limiter 223, a link 224, a drive motor 225, and the like. The discharge mechanism 220 discharges the sheet P to the document discharge unit 120. Further, the discharge mechanism 220 moves the shutter 210 to a restricted position or an unrestricted position. That is, the discharge mechanism 220 has a function of discharging the sheet P and a function of moving the shutter 210.

  The drive shaft 221 is rotated by a drive motor 225. The drive shaft 221 is provided with a rubber roll 222 and a torque limiter 223, and a link 224 is provided via the torque limiter 223. The rubber roll 222 and the link 224 rotate as the drive shaft 221 rotates. The link 224 is connected to one end of the shutter 210.

  When the drive shaft 221 rotates in the direction of arrow B in FIG. 5, the discharge mechanism 220 contacts the sheet P on which the rubber roll 222 has been conveyed, and discharges the sheet P to the document discharge unit 120. Further, the discharge mechanism 220 moves the shutter 210 to the unrestricted position via the link 224. On the other hand, when the drive shaft 221 rotates in the direction of arrow C in FIG. 4, the discharge mechanism 220 moves the shutter 210 to the limit position via the link 224.

  The torque limiter 223 uses a coil spring. When the applied torque exceeds a predetermined value, the drive shaft 221 is idled with respect to the link 224 while transmitting the predetermined torque from the drive shaft 221. According to this structure, when the shutter 210 moved as the drive shaft 221 rotates in the direction of arrow B in FIG. 5 comes into contact with other members and cannot move any more, the torque limiter 223 causes the action. While a predetermined rotational torque is applied to the shutter 210, the shutter 210 does not move any more, and the drive shaft 221 rotates to discharge the sheet P conveyed to the document discharge unit 120.

  As shown in FIGS. 4 and 5, the feeding mechanism 230 is provided on the upstream side of the transport mechanism 240 in the transport direction (arrow A direction) of the sheet P. The feeding mechanism 230 includes a rotating shaft 231 and a nudger roll 232. The feeding mechanism 230 feeds the sheet P when the shutter 210 is moved to the unrestricted position.

  The rotating shaft 231 is rotatably supported by a frame not shown. The rotary shaft 231 is provided with a nudger roll 232 and a gear (not shown). The nudger roll 232 rotates as the rotating shaft 231 rotates in the direction of arrow D in FIG. The nudger roll 232 is in a position where it does not come into contact with the uppermost surface of the sheet P even if the sheet P is set in the maximum set number before the operation of the sheet conveying apparatus 200 is started. The nudger roll 232 descends to a position where it comes into contact with the sheet P when the operation of the sheet conveying apparatus 200 is started. When the operation of the sheet conveying apparatus 200 is started, the feeding mechanism 230 feeds the sheet P by the nudger roll 232 contacting the sheet P and rotating in the direction of arrow D in FIG.

  As shown in FIGS. 4 and 5, the conveyance mechanism 240 is provided on the downstream side of the feeding mechanism 230 in the conveyance direction (arrow A direction) of the sheet P. The transport mechanism 240 includes a drive shaft 241 and a feed roll 242. The transport mechanism 240 transports the sheet P sent by the feed mechanism 230.

  The drive shaft 241 is rotatably supported by a frame (not shown) via a torque limiter (not shown). The drive shaft 241 is provided with a feed roll 242 and a gear (not shown). The drive shaft 241 is rotated in the direction of arrow E in FIG. 5 by a drive motor (not shown). The feed roll 242 is made of a resin such as ethylene-propylene rubber. The feed roll 242 rotates as the drive shaft 241 rotates in the direction of arrow E in FIG. When the operation of the sheet conveying apparatus 200 is started, the conveying apparatus 240 conveys the sheet P fed by the feeding mechanism 230 by the feed roll 242 contacting the sheet P and rotating in the arrow E direction.

  In addition, when the drive shaft 241 rotates in the direction of arrow E, the conveyance device 240 rotates the frame (not shown) about the drive shaft 241 in the direction of arrow E and lowers the nudger roll 232. When this rotation proceeds and the nudger roll 232 comes into contact with the sheet P, the action of a torque limiter (not shown) prevents the frame (not shown) from rotating any further, and the nudger roll 232 is pressed against the sheet P. The drive shaft 241 is in a rotating state. At this time, the action of a torque limiter (not shown) causes the nudger roll 232 to press the sheet P from the upper surface with a predetermined pressure. Further, the driving force of the drive shaft 241 is transmitted to the rotary shaft 231 via a gear (not shown), and the nudger roll 232 is rotated in the arrow D direction.

  The retard pad 250 is provided at a position facing the feed roll 242 as shown in FIGS. The retard pad 250 is formed by providing a resin such as ethylene-propylene rubber at a portion in contact with the feed roll 242. That is, the feed roll 242 that is a portion that contacts the retard pad 250 of the transport mechanism 240 and the member that contacts the feed roll 242 of the retard pad 250 are the same material. Therefore, the manufacturing cost is reduced as compared with the case of using relatively expensive silicon, although one is highly durable.

  The retard pad 250 separates the sheets P, which are double-fed by the feeding mechanism 230, between the feed rolls 242 one by one. When the shutter 210 is moved to the unrestricted position, the retard pad 250 contacts the feed roll 242. On the other hand, when the shutter 210 is moved to the restriction position, the retard pad 250 is separated from the feed roll 242. That is, when the shutter 210 is moved to the restriction position, the sheet P is not fed by the feeding mechanism 230 and it is not necessary to use the retard pad 250, so that the retard pad 250 is separated from the feed roll 242.

  The interlocking mechanism 260 includes a rotating shaft 261, a retard holder (supporting means) 262, a retard spring 263, a spring (second moving member) 264, and the like. The interlocking mechanism 260 interlocks the movement of the retard pad 250 with the movement of the shutter 210. Specifically, the interlock mechanism 260 brings the retard pad 250 into contact with the feed roll 242 when the discharge mechanism 220 moves the shutter 210 to the limit position. Further, the interlocking mechanism 260 separates the retard pad 250 from the feed roll 242 when the discharging mechanism 220 moves the shutter 210 to the unrestricted position.

  In other words, the interlocking mechanism 260 is configured so that when the discharge mechanism 220 moves the shutter 210 to the restriction position, the retard pad 250 exerts on the feed roll 242 when the discharge mechanism 220 moves the shutter 210 to the non-restriction position. When the discharge mechanism 220 moves the shutter 210 to the limit position, the retard pad 250 is moved to a position where the pressure exerted on the feed roll 242 by the retard pad 250 is weaker.

  The position where the pressure is weak is a position where the pressure applied to the feed roll 242 by the retard pad 250 is weaker in a state where the retard pad 250 is in contact with the feed roll 242 without being separated from the feed roll 242. But you can.

  One end of a retard holder 262 is fixed to the rotating shaft 261. The retard holder 262 supports the retard pad 250. A retard spring 263 that presses the retard pad 250 is provided on the upper surface of the retard holder 262. A spring 264 that presses the retard holder 262 is provided on the lower surface of the retard holder 262. The other end of the retard holder 262 contacts the convex portion 211 of the shutter 210. The retard spring 263 is a spring for sandwiching the sheet P with a predetermined pressure when the sheet P is sandwiched between the feed roll 242 and the retard pad 250.

  When the shutter 210 is moved from the restricted position to the non-restricted position, the retard holder 262 is pushed by the convex portion 211 of the shutter 210, so that the retard holder 262 moves around the rotation shaft 261 against the elasticity of the spring 264. When the retard holder 262 moves, the retard pad 250 comes into contact with the feed roll 242. At this time, a predetermined rotational torque is applied to the shutter 210 by the action of the torque limiter 223, and the shutter 210 does not move any further, so that the retard pad 250 is kept in contact with the feed roll 242.

  On the other hand, when the shutter 210 is moved from the non-restricted position to the restricted position, the retard holder 262 moves around the rotation shaft 261 by the elasticity of the spring 264. When the retard holder 262 moves, the retard pad 250 is separated from the feed roll 242. Therefore, when the retard pad 250 does not need to be used, the pressure exerted on the feed roll 242 by the retard pad 250 is eliminated, so that the shape of the feed roll 242 or the retard pad 250 is prevented from changing. Alternatively, the physical properties of the feed roll 242 or the retard pad 250 due to the oil content of the feed roll 242 or the retard pad 250 moving to the opposing member are prevented.

(Operation of sheet conveying device)
Next, the operation of the sheet conveying apparatus 200 will be described with reference to the drawings. A case where the sheet P is a plurality of documents will be described.

  The sheet P is restricted from being inserted by the shutter 210, and the sheet P is set at a predetermined position. That is, the sheet P is set on the arrangement member 101 by a user (not shown) of the multifunction peripheral 100. When the user of the multifunction peripheral 100 starts the operation of the sheet conveying apparatus 200, the drive shaft 221 of the discharge mechanism 220 rotates in the direction of arrow B in FIG. To do. At this time, the retard pad 250 comes into contact with the feed roll 242 by the interlocking mechanism 250.

  Next, the nudger roll 232 descends and comes into contact with the sheet P, the nudger roll 232 rotates in the direction of arrow D, and the sheet P is fed. Next, the fed sheet P is sandwiched between the feed roll 242 and the retard pad 250, and the feed roll 242 is rotated and conveyed in the direction of arrow E. At this time, when the sheet P is double-fed by the nudger roll 232, the sheet P is sandwiched between the feed roll 242 and the retard pad 250, separated one by one, and conveyed by the feed roll 242 one by one.

  Then, the sheet P on which the image is read by the CCD 106 is discharged to the document discharge unit 120 by the rubber roll 222 of the discharge mechanism 220 rotating in the arrow B direction. As described above, after all of the plurality of sheets P are discharged to the original discharge unit 120 by the discharge mechanism 260, the nudger roll 232 moves to a position before starting the operation of the sheet conveying apparatus 200. Further, the drive shaft 221 of the discharge mechanism 220 rotates in the direction of arrow C in FIG. 4, and the shutter 210 moves from the unrestricted position to the restricted position. At this time, the retard pad 250 is separated from the feed roll 242 by the interlock mechanism 260.

(2) Second Embodiment In the second embodiment, the shape of the shutter of the first embodiment is changed. Therefore, the shape of the shutter will be mainly described, and the description of the same configuration as that of the first embodiment will be omitted. FIG. 6 is a cross-sectional view illustrating a case where the shutter according to the second embodiment is moved to the restriction position. FIG. 7 is a cross-sectional view illustrating a case where the shutter according to the second embodiment is moved to an unrestricted position.

  As shown in FIGS. 6 and 7, the shutter (restricting means) 310 has a contact portion 311 in which the shape of the tip portion of the convex portion 211 of the first embodiment is changed. An upper portion (first moving member) 311a and a lower portion (second moving member) 311b are provided at the tip of the contact portion 311 on the retard holder 262 side. The other end of the retard holder 262 is provided between the upper part 311a and the lower part 311b.

  In this embodiment, when the shutter 310 is moved from the restriction position to the non-restriction position, the retard holder 262 is pushed by the upper part 311a, so that the retard holder 262 moves around the rotation shaft 261. When the retard holder 262 moves, the retard pad 250 comes into contact with the feed roll 242. On the other hand, when the shutter 310 is moved from the non-restricted position to the restricted position, the retard holder 262 is pushed by the lower portion 311b of the shutter 310, so that the retard holder 262 moves around the rotation shaft 261. When the retard holder 262 moves, the retard pad 250 is separated from the feed roll 242.

  Note that, as in the shutter 210 of the first embodiment, the shutter 310 of the second embodiment, etc., the shape of the restricting means may be changed to be a part of the interlocking means.

  The present invention can be used for a printing apparatus, a FAX apparatus, a copying apparatus, an image reading apparatus, an image processing apparatus having functions of these apparatuses, and the like.

1 is a schematic configuration diagram illustrating a multifunction machine. It is a perspective view which shows a sheet conveying apparatus. It is a perspective view which shows a conveyance surface. It is sectional drawing which shows the case where a shutter is moved to a restriction position. It is sectional drawing which shows the case where a shutter is moved to an unrestricted position. It is sectional drawing which shows the case where the shutter concerning 2nd Embodiment is moved to a restriction | limiting position. It is sectional drawing which shows the case where the shutter concerning 2nd Embodiment is moved to an unrestricted position.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Multifunction machine, 200 ... Sheet conveying apparatus, 210 ... Shutter, 211 ... Convex part, 220 ... Discharging mechanism, 230 ... Feeding mechanism, 240 ... Conveying mechanism, 250 ... Retarding pad, 260 ... Interlocking mechanism, 262 ... Retard holder, H.264 ... Spring, 310 ... Shutter, 311a ... Upper part, 311b ... Lower part, P ... Sheet.

Claims (5)

Restriction means for restricting the sheet from being inserted beyond a predetermined position;
Moving means for moving the restricting means to a first position that restricts insertion of the sheet or a second position that does not restrict insertion of the sheet;
A feeding means for feeding the sheet when the restriction means is moved to the second position;
Conveying means for conveying the sheet fed by the feeding means;
Separating means for separating the sheets fed by the feeding means one by one by sandwiching the sheets with the conveying means;
Interlinking means for interlocking movement of the separating means with movement of the restricting means.   The interlocking means is configured such that when the restricting means is moved to the first position, the restricting means is caused by the pressure exerted on the conveying means by the separating means when the restricting means is moved to the second position. The sheet conveying apparatus according to claim 1, wherein the separating unit is moved to a position where the pressure applied to the conveying unit by the separating unit when moved to the position 1 is weaker.   The interlocking means includes a supporting means for supporting the separating means, a first moving member for moving the supporting means as the restricting means moves from the first position to the second position, 3. The seat according to claim 1, further comprising: a second moving member that moves the supporting unit as the restricting unit moves from the second position to the first position. 4. Conveying device.   The member of the part which contacts the said separation means of the said conveyance means and the member of the part which contacts the said conveyance means of the said separation means are the same materials, The Claim 1 characterized by the above-mentioned. The sheet conveying apparatus according to the description.   An image processing apparatus comprising the sheet conveying apparatus according to claim 1.

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