JP5402309B2 - Recording material processing apparatus and image forming system - Google Patents

Description

  The present invention relates to a recording material processing apparatus and an image forming system.

  2. Description of the Related Art Conventionally, a recording material processing apparatus that punches after positioning a recording material has been proposed. For example, Patent Document 1 discloses that post-processing productivity is ensured by performing a pre-alignment operation of the pressing member during correction of paper bending in the punching process, and the punching position can be arbitrarily adjusted. A post-processing device has been proposed in which variations are eliminated.

JP 2005-138972 A

Here, in general, in the punching device of the recording material processing apparatus, the behavior of the recording material becomes unstable with the punching operation of the punch, and for example, the generation of noise has become a problem.
It is an object of the present invention to stabilize the behavior of a recording material that is the target of perforation in the perforation device of a recording material processing apparatus.

According to the first aspect of the present invention, there is provided a conveyance unit that conveys a recording material, a chute member that guides the recording material conveyed by the conveyance unit, and a recording material that is conveyed in the first direction by the conveyance unit. Changing means for changing the conveying direction of the recording material so that the recording material is conveyed in a second direction opposite to the first direction; receiving means for receiving the recording material whose conveying direction has been changed by the changing means; and the receiving means An abutting portion against which the rear end of the recording material that is received is abutted, a perforating means that perforates the recording material that is abutted against the abutting portion, and a recording material that is guided to the receiving means. and a induction regulating means perforation means regulates the direction of operation of drilling, said induction regulation means extend from the chute member is provided on the transport path formed by the chute member, said first A guide unit for guiding the recording material conveyed in the direction of the first direction, and a downstream side of the first direction with respect to the guide unit. A guiding portion that guides the recording material changed in the direction to the receiving means; a pressing portion that is provided downstream of the guiding portion in the second direction and presses the recording material received by the receiving means; A recording material processing apparatus, wherein one end of the guide restricting means is fixed to the chute member, and the guide portion is formed by movably configuring the other end of the guide restricting means as a free end. is there.
According to a second aspect of the present invention, the guidance restricting means is composed of a thin plate-like elastic member, and one surface of the elastic member functions as the guide portion, and the other surface is the back side of the one surface. There is a recording material processing apparatus according to claim 1, characterized that you function as the pressing portion.
According to a third aspect of the present invention, in the recording material processing apparatus according to the first aspect, the recording material abutted against the abutting portion further includes a loop portion capable of forming a loop.
Invention according to claim 4, wherein the abutting portion is set forth in claim 1, characterized in that one end of the guide regulating means guides the recording material is composed of a part of the chute member fixed Recording material processing apparatus.
The invention according to claim 5 is characterized in that the punching means includes a punch for punching the recording material by reciprocating motion, and the guide restricting means has a hole through which the punch that reciprocates passes. A recording material processing apparatus according to claim 1.
According to a sixth aspect of the present invention, there is provided a conveying unit that conveys a recording material, a chute member that guides the recording material conveyed by the conveying unit, and a recording material that is conveyed in the first direction by the conveying unit. Changing means for changing the conveying direction of the recording material so that the recording material is conveyed in a second direction opposite to the first direction; receiving means for receiving the recording material whose conveying direction has been changed by the changing means; and the receiving means An abutting portion against which the rear end of the recording material that is received is abutted, a perforating means that perforates the recording material that is abutted against the abutting portion, and a recording material that is guided to the receiving means. Guidance regulating means for regulating the direction of the punching means to perforate, the guidance regulating means extending from the chute member to the recording material provided on the conveyance path and conveyed in the first direction. A guide unit that guides on one side of the control unit, and a recording material whose conveyance direction has been changed by the change unit after passing through the guide unit is guided to the receiving unit on the other side that is the back side of the one side A recording material processing apparatus comprising: a guiding portion; and a pressing portion that presses the recording material received by the receiving means.
According to a seventh aspect of the present invention, there is provided a conveying means for conveying a recording material, a chute member for guiding the recording material conveyed by the conveying means, and a recording material conveyed in the first direction by the conveying means. Changing means for changing the conveying direction of the recording material so that the recording material is conveyed in a second direction opposite to the first direction; receiving means for receiving the recording material whose conveying direction has been changed by the changing means; and the receiving means An abutting portion against which the rear end of the recording material that is received is abutted, a perforating means that perforates the recording material that is abutted against the abutting portion, and a recording material that is guided to the receiving means. and a induction regulating means perforation means regulates the direction of operation of drilling, the when the recording medium received in the receiving means is pierced by the piercing means, the succeeding recording material conveyed after said induction It is a recording material processing apparatus according to claim which has reached the regulating means.
The invention according to claim 8 is an image forming apparatus that forms an image on a recording material, a recording material post-processing device that performs a predetermined post-processing on a recording material on which an image is formed by the image forming apparatus, The recording material post-processing apparatus includes a conveying unit that conveys the recording material, a chute member that guides the recording material conveyed by the conveying unit, and a recording material that is conveyed in the first direction by the conveying unit. Changing means for changing the conveying direction of the recording material so that the recording material is conveyed in a second direction opposite to the first direction, receiving means for receiving the recording material whose conveying direction has been changed by the changing means, An abutting portion against which the rear end of the recording material received by the receiving means is abutted; a punching means for perforating the recording material abutted against the abutting portion; and the recording material is guided to the receiving means, and the recording material The perforation hand There a induction regulating means for regulating the direction of operation of drilling, the induction regulating means, the provided extending from the chute member in the conveying path formed by the chute member is conveyed to the first direction A recording unit that guides the recording material, and a recording unit that is provided downstream of the guide unit in the first direction, and whose conveyance direction is changed to the second direction by the change unit after passing through the guide unit. A guide portion for guiding a material to the receiving means; and a pressing portion provided downstream of the guide portion in the second direction and pressing the recording material received by the receiving means. one end of the means is fixed to the chute member, an image forming system characterized that you form the inductive portion by configuring the movable other end of the induction regulating means as a free end.
The invention according to claim 9 is an image forming apparatus that forms an image on a recording material, a recording material post-processing device that performs predetermined post-processing on a recording material on which an image is formed by the image forming apparatus, The recording material post-processing apparatus includes a conveying unit that conveys the recording material, a chute member that guides the recording material conveyed by the conveying unit, and a recording material that is conveyed in the first direction by the conveying unit. Changing means for changing the conveying direction of the recording material so that the recording material is conveyed in a second direction opposite to the first direction, receiving means for receiving the recording material whose conveying direction has been changed by the changing means, An abutting portion against which the rear end of the recording material received by the receiving means is abutted; a punching means for perforating the recording material abutted against the abutting portion; and the recording material is guided to the receiving means, and the recording material The perforation hand And a guide restricting means for restricting the direction of the punching operation, and when the recording material received by the receiving means is punched by the punching means, the subsequent recording material conveyed later reaches the guide restricting means. An image forming system characterized by

According to the first aspect of the present invention, compared with the case where the present invention is not adopted, the behavior of the recording material to be perforated can be further stabilized and the behavior of the recording material can be stabilized when perforating . The recording material processing apparatus can be configured more simply.
According to the second aspect of the present invention, the recording material conveyance in the first direction and the recording material conveyance in the second direction are better performed in a relatively narrow space as compared with the case where the present invention is not adopted. Yes.
According to claim 3 of the present invention, it is possible to further improve the drilling position accuracy as compared with the case where the present invention is not adopted.
According to the fourth aspect of the present invention, the positional relationship between the abutting portion and the guide regulating means can be easily determined as compared with the case where the present invention is not adopted.
According to the fifth aspect of the present invention, it is possible to realize a better biasing to the periphery of the punch than in the case where the present invention is not adopted.
According to the sixth aspect of the present invention, compared with the case where the present invention is not adopted, the behavior of the recording material to be perforated can be further stabilized and the behavior of the recording material can be stabilized at the time of drilling. The recording material processing apparatus can be configured more simply.
According to the seventh aspect of the present invention, compared to the case where the present invention is not adopted, the behavior of the recording material that is the target of perforation can be further stabilized during perforation, and noise in the recording material processing apparatus can be improved. Can be reduced.
According to claim 8 of the present invention, compared to the case where the present invention is not employed, the behavior of the recording material that is the target of perforation can be further stabilized and the behavior of the recording material can be stabilized at the time of drilling . The recording material post-processing apparatus can be configured more simply.
According to the ninth aspect of the present invention, compared to the case where the present invention is not adopted, the behavior of the recording material that is the target of perforation can be made more stable during drilling, and the noise in the recording material post-processing device can be further reduced. It can be reduced well.

1 is a configuration diagram illustrating a configuration of an image forming system. It is the block diagram which showed the structure of the sheet | seat post-processing apparatus. 1 is a configuration diagram showing a configuration of a perforation apparatus in Embodiment 1. FIG. FIG. 3 is an external view of an elastic member in the first embodiment. FIG. 6 is an explanatory diagram showing an operation of the perforation apparatus in the first embodiment. FIG. 6 is a configuration diagram showing a configuration of a perforation apparatus in a second embodiment. FIG. 10 is an explanatory view showing the operation of the perforating apparatus in the second embodiment. FIG. 6 is an external view of an elastic member in a third embodiment. FIG. 6 is a configuration diagram showing a configuration of a perforation apparatus in a third embodiment.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a configuration diagram showing the configuration of the image forming system. An image forming system shown in FIG. 1 includes, for example, an image forming apparatus 1 such as a printer or a copier that forms a color image by an electrophotographic method, and a recording material (paper, sheet) after the image is formed by the image forming apparatus 1. The sheet post-processing apparatus 2 is an example of a recording material processing apparatus that performs post-processing such as binding.

The image forming apparatus 1 is configured in a so-called tandem method, and includes four image forming units 100Y, 100M, 100C, and 100K (also collectively referred to as “image forming unit 100”) that perform image formation based on each color image data. . Further, a laser exposure apparatus 101 that exposes a photosensitive drum 107 provided in each image forming unit 100 is provided.
In addition, the image forming apparatus 1 includes an intermediate transfer belt 102 onto which the toner images of the respective colors formed by the respective image forming units 100 are transferred, and the intermediate transfer belt 102 to which the respective color toner images formed by the respective image forming units 100 are transferred. A primary transfer roll 103 that sequentially transfers (primary transfer) to each other, and a secondary transfer roll 104 that collectively transfers (secondary transfer) each color toner image transferred onto the intermediate transfer belt 102 to a recording material (paper). In addition, a fixing device 105 for fixing each color toner image on a sheet, and a main body control unit 106 for controlling the operation of the image forming apparatus 1 are provided.

  In each image forming unit 100 of the image forming apparatus 1, the charging process to the photosensitive drum 107, the electrostatic latent image forming process on the photosensitive drum 107 by the scanning exposure from the laser exposure apparatus 101, and the formed electrostatic latent image The toner image of each color is formed through the development process of each color toner. Each color toner image formed on each image forming unit 100 is sequentially electrostatically transferred onto the intermediate transfer belt 102 by the primary transfer roll 103. Each color toner image is conveyed toward the position where the secondary transfer roll 104 is disposed as the intermediate transfer belt 102 moves.

On the other hand, in the image forming apparatus 1, a plurality of sheets P1 to P4 (collectively referred to as “sheet P” and “sheet bundle P”) of different sizes and types are accommodated in the sheet accommodating portions 110A to 110D, respectively. Yes. For example, when the paper P1 is designated by the main body control unit 106, the paper P1 is taken out from the paper storage unit 110A by the pickup roll 111, and conveyed one by one to the position of the registration roll 113 by the conveyance roll 112. The same applies to the case where the sheets P2 to P4 are designated by the main body control unit 106.
Then, the paper P is supplied from the registration roll 113 in accordance with the timing when each color toner image on the intermediate transfer belt 102 is conveyed to the arrangement position of the secondary transfer roll 104. As a result, the toner images of the respective colors are collectively electrostatically transferred (secondary transfer) onto the paper P by the action of the transfer electric field formed by the secondary transfer roll 104.

  Thereafter, the paper P onto which the color toner images are secondarily transferred is peeled off from the intermediate transfer belt 102 and conveyed to the fixing device 105. In the fixing device 105, each color toner image is fixed on the paper P by a fixing process using heat and pressure, and an image is formed. Then, the sheet P on which the image is formed is discharged from the sheet discharge unit T of the image forming apparatus 1 by the transport roll 114 and is transported to the sheet post-processing apparatus 2 connected to the image forming apparatus 1.

The sheet post-processing device 2 is disposed downstream of the paper discharge unit T of the image forming apparatus 1 and performs post-processing such as punching and binding on the paper P on which the image is formed.
FIG. 2 is a configuration diagram showing the configuration of the sheet post-processing apparatus 2. As shown in FIG. 2, the sheet post-processing device 2 is predetermined for the transport unit 21 connected to the paper discharge unit T of the image forming apparatus 1 and the paper P taken into the transport unit 21. And a finisher unit 22 for performing post-processing. In addition, the sheet post-processing apparatus 2 includes a sheet processing control unit 23 that controls each mechanism unit of the sheet post-processing apparatus 2. The paper processing control unit 23 is connected to the main body control unit 106 through a signal line (not shown), and transmits and receives control signals and the like. In the sheet post-processing apparatus 2 in FIG. 1, the sheet processing control unit 23 is provided in the casing of the finisher unit 22, but the sheet processing control unit 23 may be provided in the casing of the image forming apparatus 1. Further, the main body control unit 106 of the image forming apparatus 1 may be configured to include the control function of the paper processing control unit 23.

In the transport unit 21 of the sheet post-processing device 2, a punching device 30 for punching holes such as 2 holes and 4 holes, and the paper P after image formation by the image forming apparatus 1 is directed toward the finisher unit 22. And a plurality of transport rolls 211 to be transported.
On the other hand, the finisher unit 22 is provided with a folding function unit 40 that forms a fold in the central portion of the paper P, and a compile tray 60 that accumulates a required number of paper P and generates a paper bundle P. Further, the finisher unit 22 is provided with an end binding stapling function unit 50 that executes staple binding (end binding) at the end of the sheet bundle P. Further, the finisher unit 22 holds a saddle stitching staple function unit 70 that performs staple binding (saddle stitching) on the center portion of the sheet bundle P that has been creased by the folding function unit 40, and the sheet bundle P. And a stacker tray 80 that moves up and down in accordance with the amount of the sheet bundle P to be held. Further, the finisher unit 22 is provided with a carry-out roll (first roll member) 61 that constitutes a carrying member for carrying out the sheet bundle P collected on the compilation tray 60. Further, the finisher unit 22 moves to a position retracted from the carry-out roll 61 when the paper P is accumulated on the compile tray 60 with the rotation shaft 62a as the movement center, and when the paper P is carried out from the compile tray 60. Is provided with a movable roll (second roll member) 62 constituting a conveying member that moves to a position where the carry-out roll 61 is pressed.

[Embodiment 1]
Next, the punching device 30 of the sheet post-processing device 2 will be described.
FIG. 3 is a configuration diagram showing the configuration of the perforating apparatus 30 in the first embodiment. 3A and 3B are a side sectional view of the punching device 30 and a plan view around the punch 302, respectively.
A punching device 30 shown in FIG. 3 includes an elastic member 301 as an example of a guide regulating unit that presses the paper P, a punch 302 that moves up and down as an example of a punching unit that punches the paper P, and a die 303 into which the punch 302 enters. A tray pressing unit 311 that is a part of the tray unit 304 that receives the paper P and is located below the elastic member 301, and a transport roll 307 as an example of a transport unit that transports the paper P are provided.
Here, the gap formed between the tray pressing portion 311 and the elastic member 301 functions as a receiving means for receiving the paper P.

  The elastic member 301 is a thin plate-like member having elasticity, and is formed of, for example, a polyester sheet such as a Mylar sheet (Mylar is a registered trademark). One end (see FIG. 4 described later) of the elastic member 301 is bonded to a chute member 309 constituting a conveyance path above an abutting portion 305 (described later). Note that one end of the elastic member 301 is bonded so as not to protrude from the paper guide surface of the chute member 309 so as not to hinder the conveyance of the paper P. On the other hand, the other end (see FIG. 4 described later) of the elastic member 301 is movable as a free end. The elastic member 301 is provided corresponding to a pair of punches 302 and a die 303.

  Here, FIG. 4 is an external view of the elastic member 301 in the first embodiment. The elastic member 301 extends from the chute member 309 (see FIG. 3) and guides the paper P conveyed before reversing, and the tray P presses the paper P whose conveyance direction has been changed by a conveyance roll 307 described later. A guide unit 321 that leads to 311; and a pressing unit 322 that presses the paper P placed on the tray pressing unit 311.

The elastic member 301 has a hole 331 having a hole diameter larger than the outer diameter of the punch 302 while avoiding interference with the punch 302 that moves up and down. Note that the shape of the hole 331 does not have to be circular, such as an ellipse or a rhombus, as long as the end portion is not caught during conveyance of the paper. Further, in this embodiment, one elastic member 301 is combined with one punch 302, but one elastic member 301 may be combined with a plurality of punches 302. The elastic member 301 is curved when attached to the chute member 309 and forms a conveyance path so that the paper P conveyed from the upstream side passes through the concave surface (upper surface) of the curved portion. ing. In addition, the elastic member 301 is configured such that the guide portion 321 which is the other end side of the elastic member 301 is separated from the surface on which the paper of the tray portion 304 is placed, and the paper P which is reversely conveyed by the conveyance roll 307 is trayed. Guide to the pressing portion 311. In other words, the paper P can pass from the upstream side to the downstream side on the concave surface (upper surface), but conversely passes from the downstream side to the upstream side on the concave surface (upper surface). do not do.
In addition, after the paper P passes through the concave surface (upper surface) of the elastic member 301, a gap is formed between the free end of the elastic member 301 and the chute member 309, and the paper P to be conveyed while being reversed is concave. A notch 308 is provided in the chute member 309 so as not to enter the side surface (upper surface) again. The free end of the elastic member 301 is preferably a curved shape, but may be a bent shape as long as the end portion is not caught during the conveyance of the paper.

  Further, the punch 302 and the die 303 shown in FIG. 3 are cutting tools for punching the conveyed paper P. A plurality of punches 302 and dice 303 are provided in a direction crossing the paper transport direction. As the punch 302 reciprocates in the vertical direction, the sheet sandwiched between the punch 302 and the die 303 is punched.

  The tray unit 304 is for receiving the conveyed paper. The sheet P conveyed in reverse from the tray unit 304 and placed on the tray pressing unit 311 is punched by the punch 302 and the die 303.

  The transport roll 307 transports the paper P by sandwiching the paper P between upper and lower rolls that are in contact with each other. The transport roll 307 can rotate forward and reverse. More specifically, the transport roll 307 not only transports the paper P, which has been forwardly transported from the upstream side, to the downstream side as it is, but also reversely rotates based on an instruction from a control unit (not shown). The sheet P can be conveyed so as to return to the initial position. That is, the transport roll 307 can change the transport direction of the paper P. Here, the control unit that performs reverse rotation of the transport roll 307 functions as a changing unit.

The perforating apparatus 30 shown in FIG. 3 includes an abutting part 305 and a loop part 306.
The abutting portion 305 abuts the rear end portion of the paper P (the rear end side of the paper P before reversing (switchback), that is, the front end side of the paper after reversing (switchback)), so that the paper P is removed. It is a part to be positioned in the transport direction. The abutting portion 305 is formed continuously with the tray portion 304, and is configured by a part of the chute member 309 in the first embodiment. The loop portion 306 is a portion that forms a space for bending the paper P abutted against the abutting portion 305. While the paper P is abutted against the abutting portion 305 and the paper P is bent by the loop portion 306, the inclination (skew) with respect to the transport direction of the paper P is corrected.

Next, the operation of the punching device 30 will be described. FIG. 5 is an explanatory diagram showing the operation of the punching device 30 according to the first embodiment. As will be described later, the transport direction of the paper P is reversed in the punching device 30. However, in the following description, the left side of FIG. 5 is described as the upstream side (an example of the first direction) and the right side of FIG. 5 is the downstream side (an example of the second direction) regardless of the transport direction.
(1) First, the sheet P on which an image is formed is conveyed along the guide unit 320 from the upstream side (left side in FIG. 5). The conveyed paper P passes through the concave surface (upper surface) while pushing down the guiding portion 321 of the curved elastic member 301 with the weight of the paper itself (FIG. 5A).
(2) Next, the transport roll 307 rotates in the direction of the arrow (positive direction) in FIG. 5B, and further downstream until the rear end side of the paper P sandwiched between the transport rolls 307 completely passes through the elastic member 301. It is conveyed to the side (right side in FIG. 5) (FIG. 5B). The elastic member 301 is released from the load of the paper P after the rear end side of the paper P has passed. As a result, the elastic member 301 returns to the natural state with the guide portion 321 rising.
(3) Next, the transport roll 307 is reversed (in the direction of the arrow in FIG. 5C (reverse direction)), the paper P is transported so as to be returned to the upstream side, and the transport direction of the paper P is reversed. The reverse rotation of the transport roll 307 is based on the detection of the paper P by a paper sensor (not shown), acquires the timing at which the rear end side of the paper P completely passes through the elastic member 301, and controls the paper processing based on the acquisition result. The unit 23 controls. Note that the timing at which the rear end side of the paper P completely passes through the elastic member 301 is determined by using a paper feed start timing or a detection timing of a detector (not shown) provided on the upstream side of the guide unit 321. The result calculated from the speed relationship may be used.
(4) Next, the sheet P comes into contact with the convex surface (lower surface) of the elastic member 301, but receives the conveying force of the conveying roll 307, and the sheet P enters the lower part of the elastic member 301. Further, when the transport roll 307 pushes the paper P back to the upstream side, the rear end portion of the paper P (the front end side of the paper P after switchback) hits the abutting portion 305 and the paper P bends in the loop portion 306 ( FIG. 5 (d)). In this state, the rotation of the transport roll 307 is stopped by the control by the paper processing control unit 23, and the skew of the paper P is corrected. The sheet P is pressed toward the tray unit 304 by the tray pressing unit 311 by the elastic force of the elastic member 301, so that the sheet P is not only held in the conveying direction by the abutting unit 305, but also the operation direction of the punch 302. (Vertical direction) is also retained.
(5) Next, the punch 302 reciprocates up and down to punch the paper P (FIG. 5E). When the punch 302 reciprocates up and down, the paper P is pressed toward the tray portion 304 side by the elastic member 301. In the state where flapping of the paper P is suppressed by this pressing, the paper P is punched by the vertical movement of the punch 302.
During punching, the paper P to be punched next is conveyed to the front of the punch 302, and the front end of the paper P (the leading edge of the paper P before switchback) is formed on the concave surface (upper surface) of the elastic member 301. The side) can be placed (overlapping in the vertical space).
(6) Finally, the transport roll 307 rotates again in the forward direction shown in FIG. 5B, and the punched paper P is transported downstream in the transport direction (not shown). During punching, the paper P to be punched next is conveyed to the front of the punch 302, and the front end of the paper P (the leading edge of the paper P before switchback) is formed on the concave surface (upper surface) of the elastic member 301. Side) is placed (in an overlapped state in the vertical space), the overlapped state is set by increasing the conveyance speed of the punched paper P by a predetermined amount from the speed before punching. It can be solved.

As described above, in the punching device 30 according to the first embodiment, the elastic member 301 provided in the transport path passes the paper P transported downstream in the transport direction, and is transported upstream in the transport direction. P is guided to the tray pressing portion 311 and pressed to the tray pressing portion 311. By this pressing, the top and bottom flapping of the paper P due to the punching operation of the punch 302 is suppressed, and the punching operation is performed in a state where noise caused by the fluttering is reduced.
Further, in the punching device 30 according to the first embodiment, the trailing edge of the paper P being punched and the leading edge of the paper P to be punched next can be overlapped. By adopting such an aspect, it is possible to reduce the interval between the sheets P that are sequentially conveyed, so that the time required for the punching operation of the punch 302 can be increased accordingly. As a result, compared with a case where the punching operation of the punch 302 is performed in a short time, noise caused by the punching operation of the punch 302 is further reduced.

[Embodiment 2]
In the first embodiment, a loop portion 306 is provided in the conveyance path, and the deflection of the paper P returned to the upstream side by the conveyance roll 307 is released. In the second embodiment, a slip roll 310 (see FIG. 6) is provided instead of the loop unit 306 and the conveyance roll 307, and the inclination (skew) with respect to the conveyance direction of the paper P is corrected.
In the second embodiment, components similar to those in the first embodiment are denoted by the same reference numerals, and detailed description thereof may be omitted.

FIG. 6 is a configuration diagram illustrating a configuration of the perforation apparatus 30 according to the second embodiment. 6A and 6B are a side sectional view of the punching device 30 and a top view around the punch 302, respectively.
The punching device 30 according to the second embodiment includes a slip roll 310. The slip rolls 310 are formed at a plurality of locations in a direction that intersects the paper transport direction. When a certain force in the sheet conveyance direction is applied to the sheet being conveyed during sheet conveyance, the sheet rotates idly. That is, the slip roll 310 limits the force applied to the paper when a torque greater than a predetermined value is applied.

Next, the operation of the punching device 30 will be described. FIG. 7 is an explanatory diagram showing the operation of the punching device 30 according to the second embodiment. As will be described later, the transport direction of the paper P is reversed in the punching device 30.
(1) First, the sheet P on which an image is formed is conveyed along the guide unit 320 from the upstream side (left side in FIG. 7). The conveyed paper P passes through the concave surface (upper surface) while pushing down the guiding portion 321 of the curved elastic member 301 with the weight of the paper itself (FIG. 7A).
(2) Next, the slip roll 310 rotates in the direction of the arrow (positive direction) in FIG. 7B, and further downstream until the rear end side of the paper P sandwiched between the slip rolls 310 completely passes through the elastic member 301. It is conveyed to the side (right side of FIG. 7) (FIG. 7B). The elastic member 301 is released from the load of the paper P after the rear end side of the paper P has passed. As a result, the guiding portion 321 rises and the elastic member 301 returns to the natural state.
(3) Next, the slip roll 310 is reversed (in the direction of the arrow in FIG. 7C (reverse direction)), the paper P is conveyed so as to be returned to the upstream side, and the conveyance direction of the paper P is reversed. The reverse rotation of the slip roll 310 is based on the detection of the paper P by a paper sensor (not shown), acquires the timing at which the rear end side of the paper P completely passes through the elastic member 301, and controls the paper processing based on the acquisition result. The unit 23 controls. Note that the timing at which the rear end side of the paper P completely passes through the elastic member 301 is determined by using a paper feed start timing or a detection timing of a detector (not shown) provided on the upstream side of the guide unit 321. The result calculated from the speed relationship may be used.
(4) Next, the paper P comes into contact with the convex surface (lower surface) of the elastic member 301, but receives the conveying force of the slip roll 310, and the paper P enters the lower part of the elastic member 301. Further, when the slip roll 310 pushes the paper P back to the upstream side, the front end portion of the paper P (the front end side of the paper P before switchback) hits the abutting portion 305 (FIG. 7D). When the rear end portion of the paper P (the front end side of the paper P after switchback) hits the abutting portion 305, the slip roll 310 idles. In this state, the skew of the paper P is corrected. The sheet P is not only held in the conveying direction by the abutting unit 305 but also moved in the operation direction of the punch 302 (vertical direction) by being pressed toward the tray unit 304 side by the tray pressing unit 311 by the elastic force of the elastic member 301. ) Is also retained.
(5) Next, the punch 302 reciprocates up and down to punch the paper P (FIG. 7E). When the punch 302 reciprocates up and down, the paper P is pressed toward the tray portion 304 side by the elastic member 301. In the state where the flapping of the paper is suppressed by this pressing, the paper is punched by the vertical movement of the punch 302.
During punching, the paper P to be punched next is conveyed to the front of the punch 302, and the front end of the paper P (the leading edge of the paper P before switchback) is formed on the concave surface (upper surface) of the elastic member 301. The side) can be placed (overlapping in the vertical space).
(6) Finally, the slip roll 310 rotates in the forward direction shown in FIG. 7B, and the punched paper P is transported downstream in the transport direction (not shown). During punching, the paper P to be punched next is conveyed to the front of the punch 302, and the front end of the paper P (the leading edge of the paper P before switchback) is formed on the concave surface (upper surface) of the elastic member 301. Side) is placed (in an overlapped state in the vertical space), the overlapped state is set by increasing the conveyance speed of the punched paper P by a predetermined amount from the speed before punching. It can be solved.

[Embodiment 3]
The third embodiment is different from the above embodiments in the shape of the elastic member 301.
FIG. 8 is an external view of the elastic member 301 in the third embodiment. As shown in FIG. 8A, the elastic member 301 is provided on both sides of the pressing portion 322 and the pressing portion 322 for pressing the paper P placed on the tray portion 304, and is conveyed in the first direction. A guide portion 320 that guides P and a guide portion 321 that is provided at an end (the other end) opposite to the pressing portion 322 and guides the paper P conveyed in the second direction. The elastic member 301 is curved from the guide part 320 to the guide part 321. The pressing portion 322 has a hole 331 having a hole diameter larger than the outer diameter of the punch 302 to avoid interference with the punch 302 that moves up and down. Note that the shape of the hole 331 does not have to be circular, such as an ellipse or a rhombus, as long as the end portion is not caught during conveyance of the paper. Further, in this embodiment, one elastic member 301 is combined with one punch 302, but one elastic member 301 may be combined with a plurality of punches 302.
The elastic member 301 in the third embodiment is a thin plate-like member having the same elasticity as that in the first embodiment, and is made of, for example, a polyester sheet such as a Mylar sheet (Mylar is a registered trademark). And each functional part is formed in this mylar sheet by notching along the conveyance direction of a sheet.

FIG. 8B is a diagram showing an application example of the elastic member 301 shown in FIG.
In this application example, one end side of the pressing portion 322 has a protruding portion 322 a that is longer than the one end side of the guide portion 320 and protrudes. The protruding portion 322a is inserted into a notch provided in a part of the abutting portion 305. (Refer to FIG. 9C described later)

FIG. 9 is a configuration diagram illustrating a configuration of the perforation apparatus 30 according to the third embodiment. FIGS. 9A and 9B are a side sectional view and a plan view around the punch 302 of the punching device 30 provided with the elastic member 301 shown in FIG. 8A, respectively.
As in the first and second embodiments, the elastic member 301 in the third embodiment is curved while the sheet P conveyed from the upstream side passes through the upper surface of the guide unit 320 and pushes down the guide unit 321. It passes through the concave surface (upper surface) of the part. Thereafter, the paper P is conveyed so as to be returned to the upstream side, and contacts the lower surface of the guide portion 321. Then, the paper P enters the lower portion of the pressing portion 322, and the front end portion in the transport direction hits the abutting portion 305.
Here, the elastic member 301 in the third embodiment is different from the elastic member 301 in the first and second embodiments in the shape of the pressing portion 322. The pressing portion 322 is formed in a planar shape so as to cover the surface on which the paper P on the tray portion 304 is placed from the die 303 to the abutting portion 305. Accordingly, the pressing portion 322 can further stabilize the behavior of the paper P that is the target of punching, further suppresses flapping of the paper P, and reduces noise.

Moreover, FIG.9 (c) is a sectional side view of the punching apparatus 30 provided with the elastic member 301 shown in FIG.8 (b).
As shown in FIG. 8B, the pressing portion 322 of the elastic member 301 is formed in a planar shape with the protruding portion 322a of the pressing portion 322 extending longer than the elastic member 301 shown in FIG. 8A. . The pressing portion 322 covers the surface on which the paper on the tray portion 304 is placed without gaps from the die 303 to the abutting portion 305, and fluttering of the paper P is suppressed to reduce noise.

  In the third embodiment, the elastic member 301 is integrally formed. However, some or all of the guide part 320, the guide part 321 and the pressing part 322 are separate members, and these separate members. You may comprise by bonding together.

As described above, in the punching device 30 according to the third embodiment, the elastic member 301 shown in FIG. 8A includes the planar pressing portion 322, and the tray portion 304 extends from the die 303 to the abutting portion 305. The surface on which the paper P is placed is covered. This planar pressing portion 322 suppresses flapping of the paper P, and noise is reduced.
Further, according to the application example of the elastic member 301 shown in FIG. 8B, the paper P that is the target of perforation is pressed by the pressing portion 322 until the end of the paper P pressed against the abutting portion 305. The noise can be reduced by reducing the fluttering of the paper P, for example.

DESCRIPTION OF SYMBOLS 301 ... Elastic member, 302 ... Punch, 303 ... Die, 304 ... Tray part, 305 ... Butting part, 306 ... Loop part, 307 ... Conveyance roll, 309 ... Chute member, 310 ... Slip roll, 320 ... Guide part, 321 ... guide part, 322 ... pressing part

Claims (9)

Conveying means for conveying the recording material;
A chute member for guiding the recording material conveyed by the conveying means;
Changing means for changing the recording material conveyance direction so that the recording material conveyed in the first direction by the conveying means is conveyed in a second direction opposite to the first direction;
Receiving means for receiving a recording material whose conveyance direction has been changed by the changing means;
An abutting portion against which the rear end of the recording material received by the receiving means is abutted;
Perforating means for perforating the recording material abutted against the abutting portion;
Guidance regulating means for guiding the recording material to the receiving means, and regulating the recording material in a direction in which the punching means perforates;
Including
The guide restricting means is provided on the conveyance path formed by the chute member so as to extend from the chute member, and guides a recording material conveyed in the first direction;
A guide unit that is provided downstream of the guide unit in the first direction and guides the recording material whose conveyance direction has been changed to the second direction by the change unit after passing through the guide unit. When,
A pressing portion that is provided downstream of the guiding portion in the second direction and presses the recording material received by the receiving means;
With
One end of the guide restricting means is fixed to the chute member, and the guide portion is formed by movably configuring the other end of the guide restricting means as a free end . Said induction regulation means is constituted by a thin plate-shaped elastic member acts on one surface of the elastic member as the guide portion, to function the other surface to be the back side of the one surface is as the pressing portion Rukoto The recording material processing apparatus according to claim 1.   The recording material processing apparatus according to claim 1, wherein the recording material abutted against the abutting portion further includes a loop portion capable of forming a loop. The abutting portion, the recording material processing apparatus according to claim 1, characterized in that one end of the guide regulating means guides the recording material is composed of a part of the chute member fixed. The punching means comprises a punch for punching the recording material by reciprocating motion,
The recording material processing apparatus according to claim 1, wherein the guide regulating unit has a hole through which the punch that reciprocates passes. Conveying means for conveying the recording material;
A chute member for guiding the recording material conveyed by the conveying means;
Changing means for changing the recording material conveyance direction so that the recording material conveyed in the first direction by the conveying means is conveyed in a second direction opposite to the first direction;
Receiving means for receiving a recording material whose conveyance direction has been changed by the changing means;
An abutting portion against which the rear end of the recording material received by the receiving means is abutted;
Perforating means for perforating the recording material abutted against the abutting portion;
Guidance regulating means for guiding the recording material to the receiving means, and regulating the recording material in a direction in which the punching means perforates;
Including
The guidance regulating means extends on the chute member and guides the recording material that is provided on the conveyance path and conveyed in the first direction on one surface of the guidance regulating means, and
A guide unit that guides the recording material whose conveyance direction has been changed by the changing unit after passing through the guide unit to the receiving unit on the other side that is the back side of the one side;
A pressing portion for pressing the recording material received by the receiving means;
A recording material processing apparatus comprising: Conveying means for conveying the recording material;
A chute member for guiding the recording material conveyed by the conveying means;
Changing means for changing the recording material conveyance direction so that the recording material conveyed in the first direction by the conveying means is conveyed in a second direction opposite to the first direction;
Receiving means for receiving a recording material whose conveyance direction has been changed by the changing means;
An abutting portion against which the rear end of the recording material received by the receiving means is abutted;
Perforating means for perforating the recording material abutted against the abutting portion;
Guidance regulating means for guiding the recording material to the receiving means, and regulating the recording material in a direction in which the punching means perforates;
Including
The recording material processing apparatus according to claim 1, wherein when the recording material received by the receiving means is punched by the punching means, a subsequent recording material conveyed later reaches the guidance restricting means. An image forming apparatus for forming an image on a recording material;
A recording material post-processing device that performs a predetermined post-processing on a recording material on which an image is formed by the image forming apparatus,
The recording material post-processing device comprises:
Conveying means for conveying the recording material;
A chute member for guiding the recording material conveyed by the conveying means;
Changing means for changing the recording material conveyance direction so that the recording material conveyed in the first direction by the conveying means is conveyed in a second direction opposite to the first direction;
Receiving means for receiving a recording material whose conveyance direction has been changed by the changing means;
An abutting portion against which the rear end of the recording material received by the receiving means is abutted;
Perforating means for perforating the recording material abutted against the abutting portion;
Guidance regulating means for guiding the recording material to the receiving means, and regulating the recording material in a direction in which the punching means perforates;
With
The guide restricting means is provided on the conveyance path formed by the chute member so as to extend from the chute member, and guides a recording material conveyed in the first direction;
A guide unit that is provided downstream of the guide unit in the first direction and guides the recording material whose conveyance direction has been changed to the second direction by the change unit after passing through the guide unit. When,
A pressing portion that is provided downstream of the guiding portion in the second direction and presses the recording material received by the receiving means;
With
One end of the induction regulating means is fixed to the chute member, an image forming system characterized that you form the inductive portion by configuring the movable other end of the induction regulating means as a free end. An image forming apparatus for forming an image on a recording material;
A recording material post-processing device that performs a predetermined post-processing on a recording material on which an image is formed by the image forming apparatus,
The recording material post-processing device comprises:
Conveying means for conveying the recording material;
A chute member for guiding the recording material conveyed by the conveying means;
Changing means for changing the recording material conveyance direction so that the recording material conveyed in the first direction by the conveying means is conveyed in a second direction opposite to the first direction;
Receiving means for receiving a recording material whose conveyance direction has been changed by the changing means;
An abutting portion against which the rear end of the recording material received by the receiving means is abutted;
Perforating means for perforating the recording material abutted against the abutting portion;
Guidance regulating means for guiding the recording material to the receiving means, and regulating the recording material in a direction in which the punching means perforates;
With
An image forming system according to claim 1, wherein when the recording material received by the receiving means is punched by the punching means, a subsequent recording material conveyed later reaches the guidance restricting means.

Images