JP6213766B2 - Conveying apparatus, post-processing apparatus, and image forming apparatus - Google Patents

Description

  The present invention relates to a transport device that transports paper, a post-processing device including the same, and an image forming apparatus such as a copying machine, a printer, a facsimile, or a multifunction peripheral or a printing machine including the same, In particular, the present invention relates to a conveying apparatus, a post-processing apparatus, and an image forming apparatus in which a pair of conveying rollers for conveying a sheet in a state where the sheet is sandwiched between two conveying rollers.

  Conventionally, in an image forming apparatus such as a copying machine or a printer, or a post-processing apparatus installed in the image forming apparatus, a pair of conveying rollers is configured to remove paper jammed at the position of the conveying roller pair. Of these two conveying rollers, one configured so that one conveying roller can be separated from the other conveying roller is widely used (see, for example, Patent Documents 1 and 2).

  In Patent Documents 1 and 2, etc., the two transport rollers constituting the transport roller pair are composed of a drive roller connected to a drive unit (drive source) and a driven roller (transport roller) that is in pressure contact with the drive roller. ing. In addition, a pair of conveyance guide members (an upper guide plate and a lower guide plate) are provided facing each other so that only the roller portions of the two conveyance rollers are exposed to the sheet conveyance path. During jam processing, the driven roller is moved upward with the other conveyance guide member (upper guide plate) away from the fixed one conveyance guide member (lower guide plate) and the driving roller. Thus, a sufficient space can be formed between the two transport rollers (a pair of transport guide members) to remove the jammed paper.

  When the conventional conveying apparatus is configured to connect the two conveying rollers constituting the conveying roller pair to the driving unit, the conventional conveying device is connected to the driving unit so that neither of the two conveying rollers can move in the separating direction. Therefore, as in the above-described Patent Documents 1 and 2, etc., it is difficult to configure such that the other conveyance roller can be separated from the one conveyance roller in order to perform jam processing.

  The present invention has been made in order to solve the above-described problems. Even when the two conveying rollers constituting the conveying roller pair are respectively connected to the driving unit, the jam processing is performed. An object of the present invention is to provide a transport device, a post-processing device, and an image forming apparatus that can separate the other transport roller from the one transport roller when performing the above process.

According to a first aspect of the present invention, a transport apparatus includes a pair of transport rollers that rotate in different directions while transporting the paper in a predetermined transport direction in a state where the paper is sandwiched between two transport rollers facing each other. The two transport rollers are each connected to a drive unit, and at least one of the two transport rollers is divided in the width direction, and the divided rotary shafts are connected to each other. The connecting member is formed of an elastic material, and the width from a state in which the rotating shaft portion on the other end side in the width direction is in close contact with the divided rotating shaft portion on the one end side in the width direction. A hollow portion is formed to move to a state separated in the direction, and when the jam processing is performed, the rotation shaft portion on the other end side in the width direction is separated from the rotation shaft portion on the one end side in the width direction in the width direction. In the connected state The wood and the rotation shaft portion of the widthwise end side is elastically deformed by rotating around the position of the connecting member is intended to let the displacement in the detaching direction relative to the conveying rollers of the other side.

  According to the present invention, even when the two conveying rollers constituting the conveying roller pair are configured to be connected to the driving unit, respectively, when the jam processing is performed, the other conveying roller is compared with the other conveying roller. It is possible to provide a conveying device, a post-processing device, and an image forming apparatus that can separate the conveying rollers.

1 is an overall configuration diagram illustrating an image forming apparatus according to Embodiment 1 of the present invention. It is a block diagram which shows a post-processing apparatus. It is a block diagram which shows a conveying apparatus. It is a perspective view which shows a part of drive part in a conveying apparatus. It is a perspective view which shows a conveyance guide member and a part of conveyance roller. It is a figure which shows the state of the conveying apparatus at the time of jam processing. It is sectional drawing which shows a connection member. It is a figure which shows the conveying apparatus in Embodiment 2 of this invention. It is a figure which shows the principal part of the conveyance roller in the conveying apparatus of FIG. It is a figure which shows the conveying apparatus in Embodiment 3 of this invention. It is a figure which shows the principal part of the conveyance roller in the conveying apparatus of FIG. It is a figure which shows the principal part of the conveyance roller in the conveying apparatus of FIG. 10 as a modification. It is a figure which shows the conveying apparatus in Embodiment 4 of this invention. It is a figure which shows the principal part of the conveyance roller in the conveying apparatus of FIG. It is a perspective view which shows the principal part of the conveyance guide member of the conveying apparatus in Embodiment 5 of this invention. It is the schematic front view which looked at the conveyance guide member in the conveyance apparatus of FIG. 15 from the operation side. FIG. 16 is a schematic front view of a transport guide member in the transport apparatus of FIG. 15 as a modification, as viewed from the operation side. FIG. 16 is an enlarged view of a main part of a conveyance guide member in the conveyance apparatus of FIG. 15 as another modified example when viewed in the width direction.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
A first embodiment of the present invention will be described in detail with reference to FIGS.
First, the configuration and operation of the entire image forming apparatus will be described with reference to FIG.
In FIG. 1, 1 is a copying machine as an image forming apparatus, 2 is a document reading unit that optically reads image information of a document D, and 3 is a photosensitive member that exposes light L based on the image information read by the document reading unit 2. An exposure unit for irradiating the drum 5, 4 an image forming unit for forming a toner image (image) on the photosensitive drum 5, and 7 for transferring the toner image formed on the photosensitive drum 5 to a sheet P (sheet) A transfer unit (image forming unit), 10 a document transport unit that transports a set document D to the document reading unit 2, 12 to 14 a paper feed unit storing paper P, and 17 and 18 to the transfer unit 7. A registration roller (timing roller) that conveys the paper P toward the paper, 20 a fixing device that fixes an unfixed image on the paper P, 21 a fixing roller installed in the fixing device 20, and 22 installed in the fixing device 20. The pressure roller, 30 has an image formed on the front side Was inverts the paper P after showing the two-sided conveyance unit, which transported toward the image forming unit.
Further, 50 is a post-processing device that performs post-processing on the paper P discharged from the image forming apparatus main body 1 and carried in, 60 is a transporting device that transports the paper P toward the staple tray 61, and 71 to 73 are rear-processing devices. A paper discharge tray on which the processed paper P (or paper bundle) is discharged and stacked is shown. The post-processing device 50 is detachably installed on the image forming apparatus main body 1.

With reference to FIG. 1, an operation during normal image formation in the image forming apparatus main body 1 will be described.
First, the document D is transported from the document table in the direction of the arrow in the drawing by the pair of transport rollers of the document transport unit 10 and passes over the document reading unit 2. At this time, the document reading unit 2 optically reads the image information of the document D passing above.
Then, the optical image information read by the document reading unit 2 is converted into an electric signal and then transmitted to the exposure unit 3 (writing unit). Then, exposure light L such as laser light based on the image information of the electrical signal is emitted from the exposure unit 3 toward the photosensitive drum 5 of the image forming unit 4.

On the other hand, in the image forming unit 4, the photosensitive drum 5 is rotated in the clockwise direction in the drawing, and image information is transferred onto the photosensitive drum 5 through a predetermined image forming process (charging process, exposure process, development process). An image (toner image) corresponding to is formed.
Thereafter, the image formed on the photosensitive drum 5 is transferred onto the paper P conveyed by the registration rollers 17 and 18 in the transfer unit 7 as an image forming unit.

On the other hand, the sheet P conveyed to the transfer unit 7 (image forming unit) operates as follows.
First, one of the plurality of paper feeding units 12, 13, and 14 of the image forming apparatus main body 1 is automatically or manually selected (for example, the uppermost paper feeding unit 12 is selected). To do.)
Then, the uppermost sheet P of the paper P stored in the paper feeding unit 12 is transported toward the position of the transport path K1.

  Thereafter, the sheet P passes through a conveyance path K1 in which a plurality of conveyance roller pairs are disposed, and reaches the position of the registration rollers 17 and 18. Then, the sheet P that has reached the position of the registration rollers 17 and 18 is conveyed toward the transfer unit 7 (image forming unit) at the same timing in order to align with the image formed on the photosensitive drum 5. Is done.

  Then, after the transfer process, the sheet P passes through the position of the transfer unit 7 and then reaches the fixing device 20 through the conveyance path. The sheet P that has reached the fixing device 20 is fed between the fixing roller 21 and the pressure roller 22, and the image is fixed by the heat received from the fixing roller 21 and the pressure received from both members 21 and 22. . The sheet P on which the image is fixed is delivered from between the fixing roller 21 and the pressure roller 22 (a nip portion), and then discharged from the image forming apparatus main body 1.

  Note that when the “double-sided printing mode” for performing printing on both sides of the paper P (the front side and the back side) is selected, the paper P that has undergone the fixing process on the front side is described above. The paper is not discharged as it is when the “single-sided printing mode” is selected, but is guided to the double-sided conveyance path K2, and the conveyance direction is reversed by the double-sided conveyance unit 30, and then the transfer unit 7 ( It is conveyed toward the position of the image forming unit. Then, an image is formed on the back surface of the sheet P by the same image forming process as described above at the position of the transfer unit 7, and then passes through the conveyance path through a fixing process in the fixing device 20. And discharged from the image forming apparatus main body 1.

Here, in the first exemplary embodiment, the post-processing device 50 is installed in the image forming apparatus 1, and the paper P discharged from the image forming apparatus main body 1 is transported to the post-processing device 50 and transported paper. Post-processing is performed on P.
Referring to FIG. 1, post-processing device 50 according to the first embodiment transports paper P transported from apparatus main body 1 to one of three transport paths K3 to K5, and performs different post-processing. It is comprised so that processing can be performed. The first transport path K3 is a transport path for discharging the paper P transported from the image forming apparatus main body 1 to the first paper discharge tray 71 as it is without performing post-processing. In the second transport path K4, the paper P transported from the image forming apparatus main body 1 is directly discharged to the second paper discharge tray 72, the alignment process, and the binding process to the rear end of the paper by the first stapler 90 are performed. This is a conveyance path for discharging the sheet to the second sheet discharge tray 72. In the third transport path K5, the paper P transported from the image forming apparatus main body 1 is transported once to the second transport path K4 and switched back, and then the second stapler 83 binds to the center of the paper, This is a conveyance path for performing a folding process by the sheet folding blade 84 and the like and discharging the sheet to the third sheet discharge tray 73 (see also FIG. 2).
The above-described switching of the three transport paths K3 to K5 is performed by a switching operation (rotation) of the branch claw 81.
Note that a punch processing unit for performing punching processing (punching processing) on the paper P can be provided in the vicinity of the carry-in port of the post-processing device 50.

More specifically, referring to FIG. 2, a first conveyance roller pair 51 and a paper detection sensor are installed in the vicinity of the carry-in port of the post-processing device 50, and the paper P detected by the paper detection sensor is the first one. 1, and transported into the apparatus 50 by the second transport roller pair 51, 52. Then, based on the post-processing mode selected in advance by the user, the branching claw 81 rotates so that the paper P is guided to the desired transport paths K3 to K5.
When the mode in which no post-processing is performed is selected, the paper P transported to the first transport path K3 is discharged by the third transport roller pair 53 and discharged onto the first paper discharge tray 71. . Alternatively, when the mode in which no post-processing is performed is selected, the paper P transported to the second transport path K4 is discharged by the paper discharge roller pair 55 (fifth transport roller pair) and is discharged to the second discharge path. It is placed on the paper tray 72.

When the “sort mode” is selected, the sheet P transported to the second transport path K4 serves as a transport roller pair configured to be movable in the width direction (the direction perpendicular to the paper surface in FIG. 2). Each paper P is transported while being shifted in the width direction by a predetermined amount by the fourth transport roller pair 54, transported by the paper discharge roller pair 55, and sequentially stacked on the second paper discharge tray 72.
The paper discharge roller pair 55 is configured to be able to release (contact / separate) the pressure contact state between the driving roller and the driven roller, and during the shift movement of the paper P by the fourth transport roller pair 54. It is controlled to be in a separated state.
Further, the second paper discharge tray 72 is provided with side fence portions 82 formed so as to stand up with respect to the placement surface 72a at both ends in the width direction, whereby the second paper discharge tray 72 is provided. The positions in the width direction of the sheets P stacked thereon are aligned as necessary.

  In the first embodiment, the height direction position of the second paper discharge tray 72 is fixed, but the height direction position of the second paper discharge tray 72 may be variable. . Specifically, a filler is provided above the second paper discharge tray 72 so as to be rotatable around a support shaft at the upper end, and the second paper discharge tray 72 is configured to be movable up and down by a moving mechanism (not shown). The second discharge tray is detected by detecting a state in which the central portion in the transport direction of the sheets P sequentially stacked on the second discharge tray 72 is in contact with the filler by a sensor installed in the vicinity of the support shaft of the filler. The height of the paper P stacked on 72 is recognized. Then, the vertical position of the second paper discharge tray 72 is adjusted in accordance with the increase or decrease in the number of sheets P stacked on the second paper discharge tray 72. Further, when the vertical position of the second paper discharge tray 72 reaches the lower limit position, it is assumed that the number of sheets P stacked on the second paper discharge tray 72 has reached the upper limit (full). A stop signal is transmitted from 50 to the image forming apparatus 1 to stop the image forming operation.

When the “stapling mode (binding processing mode)” is selected, the sheet P transported to the second transport path K4 is transported by the fourth transport roller pair 54 without being shifted, and the staple tray 61 It is sequentially loaded on top. When a desired number of sheets P (sheet bundle) are stacked on the staple tray 61, the tapping roller 64 disposed above the staple tray 61 moves to a position where it abuts on the uppermost sheet P, and is not shown. The tapping roller 64 is driven to rotate counterclockwise by the drive motor, whereby a plurality of sheets P (sheet bundle) are conveyed (moved) toward the fence 66. As a result, the rear end (rear end in the transport direction) of the plurality of sheets P (sheet bundle) abuts against the fence 66 and the positions in the transport direction of the plurality of sheets P are aligned.
At this time, the jogger fences 68 installed at both ends in the width direction of the staple tray 61 move in the width direction so as to sandwich the plurality of sheets P stacked on the staple tray 61, and The position in the width direction is aligned.
Then, the first stapler 90 performs the binding process on the rear end of the paper P (paper bundle) in which the transport direction and the width direction are aligned. Thereafter, the sheet P (sheet bundle) subjected to the binding process is moved obliquely upward along the inclination of the tray surface by the movement of the discharge claw 67 in the sheet discharge direction. 2 is placed on the paper discharge tray 72.

When the “folding processing mode” is selected, the sheet P is first transported to the second transport path K4 and the fourth end of the fourth transport roller pair 54 is sandwiched between the fourth transport roller pair 54. 54 is reversely rotated to be switched back and conveyed to the third conveyance path K5. Then, the sheet P transported to the third transport path K5 is transported by the sixth to eighth transport roller pairs 56 to 58 to a position where the central portion of the sheet P faces the second stapler 83. Then, after a desired number of sheets P (sheet bundle) is stacked at that position, the second stapler 83 performs a binding process on the central portion of the sheet bundle. Thereafter, the plurality of sheets P (sheet bundle) subjected to the binding process are positioned so that the central portion of the sheet P (sheet bundle) faces the sheet folding blade 84 by the seventh and eighth conveyance roller pairs 57 and 58. It is conveyed to. At this time, the sheet P (sheet bundle) is in a state where the leading end of the sheet P abuts against a stopper portion 85 (configured to be movable in the transport direction by a moving mechanism not shown).
Then, the sheet P (sheet bundle) is subjected to folding processing in a state where the center portion is folded by the sheet folding blade 84 moving to the left in FIG. Will be. Thereafter, the sheet P (sheet bundle) after the folding process is transported by the ninth transport roller pair 59 and discharged onto the third paper discharge tray 73.

Hereinafter, the characteristic configuration and operation of the transport device 60 (the post-processing device 50) according to the first embodiment will be described in detail.
As described above with reference to FIG. 2 and the like, the conveyance device 60 (the post-processing device 50) according to the first embodiment is different from each other in a state where the paper P is sandwiched between two opposed conveyance rollers 541 and 542. A conveyance roller pair 54 (fourth conveyance roller pair) is installed that rotates in the direction and conveys the paper P in a predetermined conveyance direction.
Specifically, referring to FIG. 3 and the like, the conveyance roller pair 54 includes a lower conveyance roller 541 and an upper conveyance roller 542. The lower conveying roller 541 is formed by forming a plurality of roller portions 541a (formed of a rubber material or a resin material) on a rotating shaft portion 541b made of a metal material such as stainless steel. Are supported rotatably on the main body side plate 600 via a bearing 601. The upper conveying roller 542 is formed by forming a plurality of roller portions 542a (formed of a rubber material or a resin material) on the rotating shaft portions 542b1 and 542b2 made of a metal material such as stainless steel. The other end side is rotatably supported by the main body side plate 600 via a bearing 602, and the one end side in the width direction is rotatably supported by the upper transport guide plate 552 via a bearing. Then, with the paper P sandwiched between the nips of the roller portions 541a and 542a of the two transport rollers 541 and 542, the two transport rollers 541 and 542 rotate in different directions, so that the paper P is downstream in the transport direction. It will be conveyed to.

In the first embodiment, a pulley 505 is installed on the other end in the width direction of the rotation shaft portion 541b of the lower transport roller 541 (on the left side in FIG. 3). A timing belt is stretched around a drive pulley of a drive motor (drive unit). Then, the driving force of the driving motor is transmitted to the pulley 505 via the timing belt, and the lower conveying roller 541 is rotationally driven in the counterclockwise direction of FIG. Further, the upper conveying roller 542 is driven to rotate in the clockwise direction in FIG. 2 as the lower conveying roller 541 rotates due to the frictional resistance of the roller portions 541a and 542a (or the frictional resistance through the paper P). Become.
In the first embodiment, the lower conveyance roller 541 is directly driven to rotate and the upper conveyance roller 542 is driven to rotate. However, the upper conveyance roller 542 is directly rotated to drive the lower conveyance roller. 541 may be configured to be driven and rotated, or the two transport rollers 541 and 542 may be configured to be directly rotationally driven at the same time.

In the first embodiment, driving units 500 to 503 (thrust driving units) that move the conveying roller pair 54 (the lower conveying roller 541 and the upper conveying roller 542) in the width direction are provided. The drive units 500 to 503 are for performing the “sort mode” using the transport roller pair 54 (fourth transport roller pair) as described above with reference to FIG.
Specifically, referring to FIGS. 3 and 4, the drive unit (thrust drive unit) includes a drive motor 500 (stepping motor) in which a drive gear 501 is installed on a drive shaft, a driven gear 502 meshed with the drive gear 501, A link 503, a position detection sensor 504 (photo sensor), and the like that rotatably hold the rotation shaft portions 541b and 542b1 of the two transport rollers 541 and 542, respectively. Further, the driven gear 502 includes a boss portion 502a that engages with the elongated hole portion 503a of the link 503, and a protrusion 502b (detected portion) for detecting the position of the driven gear 502 in the rotational direction by the position detection sensor 504. Is provided.
Then, the rotational driving force of the drive motor 500 is transmitted to the link 503 via the driven gear 502, and the rotational driving force is converted into a movement force in the width direction, so that the two transport rollers 541 and 542 (the transport roller pair 54). Are integrally reciprocated in the width direction (the left-right direction in FIG. 3), and the “sort mode” is performed. The reference position (home position) in the width direction of the transport roller pair 54 is detected by the position detection sensor 504.
3 and 6 are illustrated by changing the orientation of components such as the drive motor 500 in FIG. 4 for easy understanding.

3 and 5, in the first embodiment, the roller portions 541a and 542a of the two transport rollers 541 and 542 are arranged to face each other so as to be exposed to the transport path of the paper P. Transport guide plates 551 and 552 are installed as a pair of transport guide members.
Specifically, referring to FIG. 5, the upper conveyance guide plate 552 has an opening 552 a at a position corresponding to the roller portion 542 a of the upper conveyance roller 542. Similarly, an opening is formed in the lower conveyance guide plate 551 at a position corresponding to the roller portion 541a of the lower conveyance roller 541. Then, through the openings of the conveyance guide plates 551 and 552, the roller portions 541a and 542a of the two conveyance rollers 541 and 542 are pressed against each other to form a nip (for sandwiching the paper P). Will be. Further, the paper P is conveyed by using the space between the two conveyance guide plates 551 and 552 as a conveyance path while being guided by the two conveyance guide plates 551 and 552.

Here, referring to FIG. 3, FIG. 6, FIG. 7 (A1), etc., in the conveyance roller pair 54 in the first embodiment, the rotation shaft portions 542b1, 542b2 of the upper conveyance roller 542 are arranged in the width direction (FIG. 3). A connecting member 543 that connects the divided rotating shaft portions 542b1 and 542b2 to each other is provided.
Specifically, the rotation shaft portion of the upper transport roller 542 is divided into a first rotation shaft portion 542b1 on the other end side in the width direction and a second rotation shaft portion 542b2 on the one end side in the width direction. The second rotation shaft portion 542b2 occupies a large range in the range in the width direction sandwiched between the main body side plates 600 at both ends in the width direction, and both end portions in the width direction rotate to the upper conveyance guide plate 552 via bearings. Two roller portions 542a are formed at the center portion of the support portion. The first rotating shaft portion 542b1 extends outward from a slight inner side of the main body side plate 600 on the other end in the width direction and is directly connected to the driving units 500 to 503 (link 503). The main body side plate 600 (and the link 503) is rotatably supported via a bearing 602.

Then, the connecting member 543 rotates the second rotating shaft portion 542b2 (the divided rotating shaft portion on the one end side in the width direction) around the position of the connecting member 543 to lower the lower conveying roller 541 (the other conveying roller). ) In the separating direction.
Specifically, referring to FIGS. 7A1 and 7A2, the connecting member 543 is made of an elastic material such as a rubber material. Further, referring to FIG. 7A2 showing the A cross section of FIG. 7A1, D-cut portions formed respectively on the two rotary shaft portions 542b1 and 542b2 are fitted (press-fit) to the connecting member 543. The D-shaped hole portion is formed, whereby the first rotating shaft portion 542b1 rotates together with the connecting member 543 and the second rotating shaft portion 542b2 or shifts in the width direction. become.
Then, as shown in FIG. 6, the connecting member 543 is elastically deformed (bent), and the second rotating shaft portion 542 b 2 (the rotating shaft portion at one end in the width direction) is rotated around the position of the connecting member 543. It is displaced in the separating direction (upward direction) with respect to the lower conveying roller 541 (the opposite conveying roller).

  As described above, in the first exemplary embodiment, the upper transport roller is compared with the lower transport roller 541 even if the two transport rollers 541 and 542 constituting the transport roller pair 54 are both connected to the driving units 500 to 503. Since the 542 can be separated, even if a jam (paper jam) occurs at the position of the conveying roller pair 54, the jammed paper P can be easily removed (jam processing). it can.

In the first embodiment, the upper conveyance guide plate 552 (the conveyance guide member installed on the side of the upper conveyance roller 542 configured to be displaceable in the separating direction with respect to the lower conveyance roller 541 on the counterpart side). .) Is configured to rotate and displace in the same direction in conjunction with the displacement of the second rotation shaft portion 542b2 of the upper conveying roller 542 in the separation direction. Specifically, although not shown, the upper conveyance guide plate 552 is supported by the main body side plate 600 so as to be rotatable around a support shaft formed on the other end in the width direction. Then, as shown in FIG. 6, the upper conveyance guide plate 552 is rotated around the other end in the width direction together with the second rotation shaft portion 542b2 during the jam processing.
Thereby, the improvement of workability at the time of the above-described jam processing is further ensured.

Note that the structure of the connecting member 543 formed of an elastic material is not limited to that shown in FIG. 7A. For example, as shown in FIG. May be formed of a spring material.
Moreover, it is preferable to select a suitable material, shape, or the like for the connecting member 543 so as to satisfy the function of the connecting member 543 described above.

  As described above, the conveyance device 60 according to the first embodiment is a case in which the two conveyance rollers 541 and 542 constituting the conveyance roller pair 54 are connected to the driving units 500 to 503, respectively. However, since the rotation shaft portions 542b1 and 542b2 of the upper conveying roller 542 are divided into two and the rotation shaft portions 542b1 and 542b2 are connected by a bendable connecting member 543, when the jam processing is performed. The upper conveyance roller 542 can be separated from the lower conveyance roller 541.

Embodiment 2. FIG.
A second embodiment of the present invention will be described in detail with reference to FIGS.
FIGS. 8A and 8B are diagrams illustrating the transport device according to the second embodiment. In particular, FIG. 8A is a diagram illustrating the normal transport device, and FIG. 8B is a diagram illustrating the transport device during jam processing. FIG. FIG. 9 is a diagram showing a main part of the upper conveying roller 542 in FIG. 8. In particular, FIG. 9B shows the vicinity of the detected part 542b11 in the first rotating shaft part 542b1 in FIG. 9A. FIG.
The conveyance device according to the second embodiment uses two connection shafts as the connection member 545 that connects the rotation shaft portions 542b1 and 542b2 divided into two in the upper conveyance roller 542. The connecting member 543 that connects the rotating shaft portions 542b1 and 542b2 divided into two parts is different from that of the first embodiment in which a member formed of an elastic material is used.

  Similarly to the first embodiment, the conveying device 60 according to the second embodiment is also provided with a conveying roller pair 54 including two conveying rollers 541 and 542, and the rotation shaft portion 542b1 of the upper conveying roller 542. , 542b2 are divided into two, and a connecting member for connecting the two rotating shaft portions 542b1, 542b2 is provided.

Here, referring to FIGS. 8 and 9, the connecting member 545 in the second embodiment has the second rotation shaft portion 542 b 2 with respect to the first rotation shaft portion 542 b 1 (the rotation shaft portion on the other end side in the width direction). This is a connecting shaft that connects the rotating shaft portion on one end side in the width direction so as to be rotatable in one direction. Specifically, as shown in FIG. 9, in a state where the small diameter portion 542b21 provided at the tip of the second rotating shaft portion 542b2 is inserted (fitted) into the hole portion of the first rotating shaft portion 542b1, the connecting shaft 545 ( The connecting member is inserted through the through hole of the first rotary shaft portion 542b1 and the through hole formed in the small diameter portion of the second rotary shaft portion 542b2 (the state shown in FIG. 9A). With such a configuration, the second rotation shaft portion 542b2 can rotate with respect to the first rotation shaft portion 542b1 about the connection shaft 545 (connection member) as a rotation shaft.
Then, as shown in FIG. 8B, when the position of the upper conveying roller 542 in the rotational direction is adjusted so that the connecting shaft 545 (connecting member) is in a substantially horizontal state as shown in FIG. Then, the second rotation shaft portion 542b2 is rotated about the connection shaft 545 (connection member) as a rotation shaft, and the jam processing is performed.

  Referring to FIG. 9, photosensor 508 serving as a detection unit that detects the position of first rotation shaft portion 542b1 in the rotation direction is installed in conveyance device 60 in the second embodiment. Further, the first rotation shaft portion 542b1 is provided with a detected portion 542b11 (projection portion) in which the position of the rotation shaft portions 542b1 and 542b2 in the rotation direction is detected by the photosensor 508. The detected portion 542b11 is provided in the first rotating shaft portion 542b1 so as to extend with the same direction as the direction in which the connecting shaft 545 extends as a protruding direction.

During jam processing, after adjusting the position of the rotating shaft portions 542b1 and 542b2 in the rotating direction based on the detection result of the photosensor 508 (detecting means) so that the connecting shaft 545 is substantially horizontal, the second rotating shaft The portion 542b2 (rotary shaft at one end in the width direction) is rotated about the connecting shaft 545 and displaced in the separation direction with respect to the lower transport roller 541 (the other transport roller) (FIG. 8 ( B)).
When a jam occurs, the state is detected by a paper detection sensor (not shown), and the post-processing device 50 (conveyance device 60) is forcibly stopped based on the detection result. The positions in the rotational direction of the portions 542b1 and 542b2 may not be such a position that the connecting shaft 545 is substantially horizontal. Therefore, the drive motors for the pair of conveying rollers 54 until the position of the rotation shaft portions 542b1 and 542b2 in the rotation direction is such that the connection shaft 545 is in a substantially horizontal direction until the position is detected by the photosensor 508. Is driven alone (or the upper conveying roller 542 is manually rotated).

  In the second embodiment, the detected part 542b11 is provided in the first rotating shaft part 542b1, and the rotational position of the rotating shaft parts 542b1 and 542b2 is detected by the photosensor 508 (detecting means). It is also possible to provide a detected portion on the two rotation shaft portion 542b2 and detect the rotation position of the rotation shaft portions 542b1 and 542b2 by a photo sensor (detection means).

  As described above, the conveyance device 60 according to the second embodiment is a case where the two conveyance rollers 541 and 542 constituting the conveyance roller pair 54 are connected to the driving units 500 to 503, respectively. However, the rotation shaft portions 542b1 and 542b2 of the upper conveying roller 542 are divided into two parts, and the rotation shaft portions 542b1 and 542b2 are connected by a connection member 545 (connection shaft) that can rotate in one direction. Therefore, the upper transport roller 542 can be separated from the lower transport roller 541 when performing jam processing.

Embodiment 3 FIG.
A third embodiment of the present invention will be described in detail with reference to FIGS.
10A and 10B are diagrams showing the conveyance device according to the third embodiment. In particular, FIG. 10A is a diagram showing a normal conveyance device, and FIG. 10B is an upper conveyance roller 542 during jam processing. FIG. 10C is a diagram illustrating a state in which the first rotation shaft portion 542b1 is pulled out to the other end in the width direction, and FIG. 10C illustrates a state in which the second rotation shaft portion 542b2 of the upper conveying roller 542 is moved upward during jam processing It is a figure which shows a state. 11 (A1) is a view showing a main part of the upper conveying roller 542 in FIG. 10, FIG. 11 (A2) is a cross-sectional view thereof, and FIG. 11 (B) is a view showing the first rotating shaft portion 542b1. It is a figure which shows the state pulled out to the width direction other end side. Further, FIG. 12A is a view showing a main part of the upper conveying roller 542 as a modified example, and FIG. 12B is a cross-sectional view thereof.
The conveying device according to the third embodiment has a feature that the second rotating shaft portion 542b2 is rotated in a state where the first rotating shaft portion 542b1 is moved to the other end in the width direction and the hollow portion 543a is formed in the connecting member 543. This differs from that of the first embodiment.

  Similarly to the first embodiment, the conveying device 60 according to the third embodiment is also provided with a conveying roller pair 54 including two conveying rollers 541 and 542, and the rotation shaft portion 542b1 of the upper conveying roller 542. , 542b2 are divided into two, and a connecting member 543 (formed of an elastic material) that connects the two rotating shaft portions 542b1, 542b2 is provided.

  Here, with reference to FIGS. 10 and 11, the connecting member 543 according to the third embodiment has a first rotation shaft portion 542b1 (with respect to the second rotation shaft portion 542b2 (the rotation shaft portion on one end in the width direction)). A hollow portion 543a is formed to move from the state in which the rotation shaft portion on the other end side in the width direction is in close contact to the state separated in the width direction.

Specifically, as shown in FIG. 10 and FIG. 11 (A1), the two rotation shaft portions 542b1 and 542b2 are almost in close contact with each other inside the connecting member 543 in a normal state. The two rotary shaft portions 542b1 and 542b2 are formed with D-cut portions as in the first embodiment, and these D-cut portions are fitted into the D-shaped hole portions of the connecting member 543. doing. As a result, the two rotation shaft portions 542b1 and 542b2 and the connecting member 543 rotate integrally.
On the other hand, referring to FIG. 11B (and FIG. 10B), the first rotation shaft portion 542b1 is configured to be movable in the width direction in a direction away from the second rotation shaft portion 542b2. Thus, when the first rotary shaft portion 542b1 is moved in this manner, a hollow portion 542a (space) is formed between the two rotary shaft portions 542b1 and 542b2 as shown in FIG. 11B. It will be. The second rotating shaft portion 542b2 is formed with an engaging portion (a portion surrounded by a broken line in FIG. 11) that engages with the connecting member 543, and the second rotating shaft with respect to the connecting member 543. The part 542b2 is configured not to move in the width direction.

  During jam processing, as shown in FIG. 10B, the first rotation shaft portion 542b1 (the rotation shaft on the other end in the width direction) with respect to the second rotation shaft portion 542b2 (the rotation shaft portion on the one end side in the width direction). 10C, the connecting member 543 is elastically deformed (bent) as shown in FIG. 10C, and the second rotary shaft portion 542b2 is rotated around the position of the connecting member 543. Therefore, the lower conveying roller 541 is displaced in the separating direction.

Here, in the third embodiment, in order to satisfy such a configuration, the driving units 500 to 503 (thrust driving unit) can be manually thrust-moved together with the first rotating shaft unit 542b1 during jam processing. (See FIGS. 10B and 10C).
And when comprised in that way, the lower conveyance roller 541 is not connected to the same drive parts 500-503 (thrust drive part) as the upper conveyance roller 542, and another thrust drive part (not shown). It is preferable that it is connected to.

In the third embodiment, as shown in FIG. 12, in order to ensure that the two rotating shaft portions 542b1 and 542b2 are in close contact with each other inside the connecting member 543 at the normal time, the first rotating shaft portion 542b1 is used. Is provided with an engaging portion 542b12 (D-cut portion), and the engaging portion 542b12 is an engaged portion (a portion surrounded by a broken line in FIG. 12) of the second rotating shaft portion 542b2, and a D-shaped hole portion. It is preferable to be configured so that it can be engaged.
As a result, the two rotating shaft portions 542b1 and 542b2 and the connecting member 543 rotate integrally without causing a twist or the like in the connecting member 543 in a normal state.

  As described above, the conveyance device 60 according to the third embodiment is configured such that the two conveyance rollers 541 and 542 constituting the conveyance roller pair 54 are connected to the driving unit, respectively. Since the rotation shaft portions 542b1 and 542b2 of the upper conveyance roller 542 are divided into two and the rotation shaft portions 542b1 and 542b2 are connected by a bendable connecting member 543, the lower conveyance roller is used when performing jam processing. The upper conveyance roller 542 can be separated from the 541.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described in detail with reference to FIGS.
FIG. 13 is a diagram illustrating the transport device according to the fourth embodiment. In particular, FIGS. 13A to 13C are diagrams illustrating the normal transport device, and FIGS. 13D and 13E. FIG. 5 is a diagram illustrating a transport device during jam processing. FIG. 14A is a view showing the main part of the upper transport roller 542 in a normal state, and FIGS. 14B and 14C are views showing the main part of the upper transport roller 542 in the jam processing. .
In the transport apparatus according to the fourth embodiment, a stopper member 548 and the like are provided on the first rotation shaft portion 542b1 that is pulled out to the other end in the width direction, and the lower transport roller 541 has two rotation shaft portions 541b1 and 541b2. This is different from the third embodiment in that the connecting member 546 is installed in a divided manner.

Similarly to the third embodiment, the conveying device 60 according to the fourth embodiment is also provided with a conveying roller pair 54 including two conveying rollers 541 and 542, and the rotation shaft portion 542b1 of the upper conveying roller 542. , 542b2 are divided into two, and a connecting member 543 (formed of an elastic material) that connects the two rotating shaft portions 542b1, 542b2 is provided.
Further, referring to FIG. 13 and FIG. 14, the connecting member 543 in the fourth embodiment also has a first rotating shaft portion 542b1 with respect to the second rotating shaft portion 542b2 as in the third embodiment. A hollow portion 543a is formed for moving from a close contact state to a separated state in the width direction.

Here, with reference to FIG. 14, a stopper member 548, a compression spring 549 (biasing member), a support member 547, and the like are installed on the upper conveyance roller 542 in the fourth embodiment.
The support member 547 is made of a resin material having a certain degree of rigidity, and is closely attached (adhered) to the connecting member 543 so as to cover the outer diameter portion of the first rotation shaft portion 542b1. Further, a fitting portion into which the stopper member 548 can be fitted is formed on the inner diameter portion of the support member 547.
The stopper member 548 is made of a resin material or the like, and is installed so as to be embedded in a hole formed in the first rotating shaft portion 542b1 while being biased toward the outer diameter portion by the compression spring 549. . At the upper end of the stopper member 548, a fitted portion that can be fitted into the fitted portion of the support member 547 and an inclined surface that can be engaged with the inner diameter portion of the bearing 602 are formed.

Then, as shown in FIG. 14A, in a normal state, the stopper member 548 is fitted to the support member 547, and the connecting member 543 is connected to the two rotating shaft portions 542b1 and 542b2 without being twisted. The member 543 rotates integrally. In the normal state, when the “sort mode” is performed, the lower conveying roller 541 and the upper conveying roller 542 are integrally moved (oscillated) in the width direction by driving of the driving units 500 to 503 (thrust driving unit). (The operations in FIGS. 13A to 13C can be referred to.)
And as shown in FIG.14 (B), at the time of jam processing, the 1st rotating shaft part 542b1 (drive part 500-503) is moved toward the left (width direction other end side). At this time, the second rotating shaft portion 542b2 also moves to the left together with the connecting member 543 and the supporting member 547 to a position where the supporting member 547 hits the bearing 602. When the support member 547 comes into contact with the bearing 602, the second rotary shaft portion 542b2, the connecting member 543, and the support member 547 are restricted from moving leftward at that position, and the stopper member 548 is brought into contact with the inner diameter portion of the bearing 602. It is pushed and moves downward so as to resist the urging force of the compression spring 549 (the fitting with the support member 547 is released).
Then, as shown in FIG. 14C, the first rotary shaft portion 542b1 in a state where the fitting between the support member 547 and the stopper member 548 is released is further moved to the left, and the two rotary shaft portions are moved. A hollow portion 543a is formed between 542b1 and 542b2, so that the connecting member 543 can be bent. That is, at the time of jam processing, the first rotation shaft portion 542b1 is moved to the left as shown in FIG. 13D, and the second rotation shaft portion 542b2 (and the upper conveyance guide as shown in FIG. 13E). The plate 552) is turned upward.

Note that after the jam processing is completed, a procedure reverse to the above-described procedure is performed, and the upper conveying roller 542 is returned to the state shown in FIG.
Here, in order to satisfy such a configuration, the range in which the first rotation shaft portion 542b1 can be moved toward the other end in the width direction during the jam processing is outside the swing range of the upper conveying roller 542 in the normal state. is there. That is, the movement range in the width direction of the first rotation shaft portion 542b1 is greater than that in FIG. 13C (the position at which the upper conveyance roller 542 moves to the left at the maximum in normal times) (D). ) (Which is a position moved to the left during jam processing) is set to the left.

In the fourth embodiment, referring to FIG. 13, similarly to the upper conveyance roller 542, the lower conveyance roller 541 is divided into two rotation shaft portions 541 b 1 and 541 b 2, and the two rotation shaft portions 541 b 1, A connecting member 546 (formed of an elastic material) that connects 541b2 is provided.
With this configuration, during the jam processing, in addition to moving the upper conveyance roller 542 upward, the lower conveyance roller 541 can also be moved downward, and therefore, between the two conveyance rollers 541 and 542. A larger space is secured, and the jam paper removability is improved. In particular, although both ends of the lower conveying roller 541 are fixed to the main body side plate 600 via bearings 601, the two connecting members 543 and 546 are provided on the other end side in the width direction. By causing the roller 541 to elastically deform the connecting member 546 and inclining the second rotation shaft portion 541b2, the separation distance between the two transport rollers 541 and 542 on the other end in the width direction can be increased, and the jammed paper The removability is improved.

  As described above, the conveyance device 60 according to the fourth embodiment is a case where the two conveyance rollers 541 and 542 constituting the conveyance roller pair 54 are connected to the driving units 500 to 503, respectively. Even so, the rotation shafts of the two transport rollers 541 and 542 are divided into two parts, and the divided rotation shafts are connected by bendable connecting members 543 and 546, respectively. When carrying out, both the conveyance rollers 541 and 542 can be separated.

Embodiment 5. FIG.
A fifth embodiment of the present invention will be described in detail with reference to FIGS.
FIG. 15 is a perspective view illustrating a main part of the upper transport guide plate 552 according to the fifth embodiment. FIG. 16 is a schematic front view of the upper transport guide plate 552 of FIG. 15 as viewed from the operation side. FIG. 17 is a schematic front view of the upper conveyance guide plate 552 as a modification, as viewed from the operation side, and corresponds to FIG. Further, FIG. 18 is an enlarged view of the main part of the upper transport guide plate 552 as another modified example when viewed in the width direction.
The transfer device according to the fifth embodiment is provided with restriction means for restricting movement of the upper transfer guide plate 552 and the second rotation shaft portion 542b2 in the transfer direction and the rotation direction. Is different.

  Similarly to the above-described embodiments, the conveyance device 60 according to the fifth embodiment is also provided with a conveyance roller pair 54 including two conveyance rollers 541 and 542, and the rotation shaft portion 542 b 1 of the upper conveyance roller 542. , 542b2 are divided into two, and a connecting member for connecting the two rotating shaft portions 542b1, 542b2 is provided.

  Here, as shown in FIGS. 15 and 16, in the transport device 60 according to the fifth embodiment, an opening 600 a is formed in the main body side plate 600 on one end side in the width direction, and the upper transport is performed from the opening 600 a. A handle 552 c of the guide plate 552 is configured to be exposed to the outside of the main body side plate 600. During jam processing, the user opens the open / close cover (not shown) of the post-processing device 50 and holds the handle 552c exposed from the main body side plate 600 together with the upper conveyance guide plate 552. The upper conveyance roller 542 is rotated so as to be lifted upward, and the jammed paper is removed from the exposed conveyance path.

In the fifth embodiment, the upper conveyance guide plate 552 (conveyance guide member) and the second rotation shaft portion 542b2 (the rotation shaft portion at one end in the width direction) of the upper conveyance roller 542 are rotated in the separation direction. Restricting means is provided for restricting movement of the upper transport guide plate 552 and the second rotation shaft portion 542b2 in the transport direction (the direction perpendicular to the paper surface of FIG. 3) when displaced.
Specifically, as shown in FIG. 16, the handle 552c of the upper conveyance guide plate 552 has a range in the conveyance direction (the left-right direction in FIG. 16) substantially matching the range in the conveyance direction of the opening 600a. Even if a force that causes the upper conveyance guide plate 552 or the upper conveyance roller 542 to shift in the conveyance direction is applied, the handle 552c interferes with the opening 600a, and the movement is restricted. FIG. 16A is a diagram showing the positional relationship between the opening 600a and the handle 552c during normal operation, and FIG. 16B is a diagram showing the positional relationship between the opening 600a and the handle 552c during jam processing. However, the handle 552c moves along both edges of the opening 600a, and the upper conveyance guide plate 552 and the upper conveyance roller 542 are moved substantially straight up and down.
With such a configuration, after the jam processing is performed, the upper conveyance guide plate 552 and the upper conveyance roller 542 can be reliably returned to the original positions, and the conveyance function of the conveyance device 60 in the normal state is reliably maintained. be able to.

  As shown in FIG. 17, even when the width of the opening 600a in the transport direction (in the left-right direction) is set large, a slide groove 600b is formed in the main body side plate 600 to form the upper transport guide plate. By providing the shaft portion 552d that engages with the slide groove 600b in 552, the shaft portion 552d moves along the slide groove 600b, and the upper transport guide plate 552 and the upper transport roller 542 are moved substantially straight up and down. It will be.

In the fifth embodiment, the upper conveyance guide plate 552 (conveyance guide member) and the second rotation shaft portion 542b2 (rotation shaft portion on one end in the width direction) of the upper conveyance roller 542 are rotated in the separation direction. A restricting means that restricts the movement of the upper conveyance guide plate 552 and the second rotation shaft portion 542b2 in the rotational direction when displaced is also possible.
Specifically, referring to FIG. 18, a substantially arc-shaped guide portion 600c (concave portion) is formed on the main body side plate 600 on one end side in the width direction, and a protrusion that engages with the guide portion 600b on the upper conveyance guide plate 552. 552e is provided. The guide portion 600c is moved from the position of the normal protrusion 552e shown in FIG. 18A along the trajectory of the protrusion 552e during the jam processing shown in FIG. 18B. Are formed so as to define the end of the turning locus of the protrusion 552e during the jam processing shown in FIG.
With such a configuration, it is possible to prevent the upper conveyance guide plate 552 and the upper conveyance roller 542 from rotating more than necessary or being displaced toward one end in the width direction when performing a sham treatment. it can. Furthermore, after the jam processing is performed, the upper conveyance guide plate 552 and the upper conveyance roller 542 can be reliably returned to their original positions, and the conveyance function of the conveyance device 60 in the normal state can be reliably maintained.

  As described above, the conveyance device 60 according to the fifth embodiment is a case in which the two conveyance rollers 541 and 542 constituting the conveyance roller pair 54 are connected to the driving units 500 to 503, respectively. However, since the rotation shaft portions 542b1 and 542b2 of the upper conveyance roller 542 are divided into two and the rotation shaft portions 542b1 and 542b2 are connected by the connecting member 543, the lower conveyance roller is used when the jam processing is performed. The upper conveyance roller 542 can be separated from the 541.

In each of the above embodiments, the present invention is applied to the post-processing apparatus 50 installed in the monochrome image forming apparatus 1. However, the present invention is naturally applied to the post-processing apparatus installed in the color image forming apparatus. The present invention can be applied to.
In each of the above embodiments, the present invention is applied to the post-processing apparatus 50 installed in the electrophotographic image forming apparatus 1. However, the application of the present invention is not limited to this, and the other Naturally, the present invention can also be applied to a post-processing apparatus installed in an image forming apparatus of a type (for example, an ink jet type image forming apparatus or a stencil printing apparatus).
Further, in the above-described embodiments, the present invention is applied to the conveyance device 60 in the post-processing apparatus 50. However, the present invention can also be applied to conveyance devices installed in various image forming apparatuses. .
Even in those cases, the same effects as those of the above-described embodiments can be obtained.

In each of the above embodiments, another post-processing device (for example, a device that performs Z-folding processing on the paper P) is installed between the image forming apparatus main body 1 and the post-processing device 50. You can also.
In each of the above embodiments, the rotation shaft portions 542b1 and 542b2 of the upper transport roller 542 are divided into two in the width direction, and the two divided rotation shaft portions 542b1 and 542b2 are connected by the connecting member 543. However, the rotation shaft portion of the upper conveying roller 542 can be divided into three or more in the width direction, and the divided rotation shaft portions and the rotation shaft portions adjacent to each other can be connected by connecting members.
In each of the above embodiments, the present invention is applied to the conveyance device 60 in which the two conveyance rollers 541 and 542 are arranged in the vertical direction to form a substantially horizontal conveyance path. Naturally, the present invention is also applied to a transport device in which a transport path is formed in a direction (for example, a transport device in which two transport rollers are arranged in a horizontal direction to form a transport path in a substantially vertical direction). Can be applied.

  It should be noted that the present invention is not limited to the above-described embodiments, and within the scope of the technical idea of the present invention, the embodiments can be modified as appropriate in addition to those suggested in the embodiments. Is clear. In addition, the number, position, shape, and the like of the constituent members are not limited to the above embodiments, and can be set to a number, position, shape, and the like that are suitable for carrying out the present invention.

1 image forming apparatus (image forming apparatus main body),
50 aftertreatment devices,
54 transport roller pair (fourth transport roller pair),
60 conveying device,
500 drive motor (drive unit),
541 Lower conveying roller (conveying roller),
541a roller part, 541b rotating shaft part,
542 Upper conveying roller (conveying roller),
542a roller part,
542b1 first rotating shaft portion (the divided rotating shaft portion on the other end side in the width direction),
542b2 second rotating shaft portion (the divided rotating shaft portion on one end side in the width direction),
543, 545, 546 connecting member,
551 Lower transport guide plate (transport guide member),
552 Upper transport guide plate (transport guide member),
552c handle,
547 support member,
548 stopper member,
549 compression spring,
P Paper (sheet).

Japanese Patent No. 3484477 JP 2001-171917 A

Claims (7)

A pair of conveyance rollers for conveying the paper in a predetermined conveyance direction by rotating in different directions while the paper is sandwiched between two opposed conveyance rollers;
Each of the two transport rollers is connected to a drive unit,
At least one of the two transport rollers includes a connecting member that divides the rotation shaft portion in the width direction and connects the divided rotation shaft portions.
The connecting member is made of an elastic material and moves from a state in which the rotating shaft portion on the other end side in the width direction is in close contact with the divided rotating shaft portion on the one end side in the width direction to a state separated in the width direction. A hollow part is formed,
When jamming is performed, the connecting member is elastically deformed in a state where the rotation shaft portion on the other end side in the width direction is separated from the rotation shaft portion on the one end side in the width direction, and the one end side in the width direction The rotation device is rotated about the position of the connecting member and is displaced in the separating direction with respect to the opposite conveyance roller. A pair of conveyance rollers for conveying the paper in a predetermined conveyance direction by rotating in different directions while the paper is sandwiched between two opposed conveyance rollers;
Each of the two transport rollers is connected to a drive unit,
At least one of the two transport rollers includes a connecting member that divides the rotation shaft portion in the width direction and connects the divided rotation shaft portions.
The connecting member includes a connecting shaft that rotatably connects the rotating shaft portion on one end side in the width direction to the rotating shaft portion on the other end side in the width direction.
A detecting means for detecting the position of the rotating shaft portion in the rotation direction ;
When performing jam processing, after adjusting the position of the rotation shaft portion in the rotation direction based on the detection result of the detection means, the rotation shaft portion on one end side in the width direction is rotated around the connection shaft. A transport device that is displaced in a separating direction with respect to the transport roller on the other side. A pair of conveyance guide members disposed so as to face each other so that the roller portions of the two conveyance rollers are exposed to the conveyance path of the paper;
The pair of transport guide members are arranged at one end side in the width direction of the transport roller, the transport guide member installed on the side of the transport roller configured to be displaceable in the separating direction with respect to the transport roller on the other side. The conveying apparatus according to claim 1, wherein the conveying device is configured to rotate and displace in the same direction in conjunction with a displacement in a separation direction of the rotating shaft portion. When the transport guide member and the rotation shaft at one end in the width direction are rotated and displaced in the separation direction, the transport direction between the transport guide member and the rotation shaft at the one end in the width direction or / and The conveying apparatus according to claim 3, further comprising a regulating unit that regulates movement in the rotation direction. The rotation shaft at the other end in the width direction is connected to the drive unit that moves the transport roller pair in the width direction and / or the drive unit that rotationally drives the transport roller pair. The conveying apparatus in any one of Claims 1-4. A post-processing apparatus that performs post-processing on a sheet on which an image is formed by an image forming apparatus,
A post-processing apparatus comprising the transfer apparatus according to claim 1. An image forming apparatus comprising the transport device according to claim 1.

Images