JP4180811B2 - Sheet member post-processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet member post-processing apparatus such as a finisher or a sorter that performs binding processing by aligning sheet members into a bundle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a sheet member post-processing apparatus that receives a sheet member discharged from an image forming apparatus, aligns a plurality of sheet members, and binds an end of a bundle of aligned sheet members with a stapler has been put into practical use. Yes. However, in such a sheet member post-processing apparatus, the bundle of sheet members once accommodated in the staple tray is aligned by the fence of the aligning means and then bound by the stapler. However, the fence accurately aligns the sheet members. In order to do this, it is necessary that the sheet member is stored in the staple tray so as to be easily bound.
Until now, many techniques for aligning and binding sheet members in a bundle have been proposed, but sheet member post-processing devices that can be stored accurately when the sheet member is carried into the alignment member have been proposed so far. It has not been.
[0003]
[Problems to be solved by the invention]
Thus, as described above, the present invention provides a sheet member post-processing device that releases sheet members to the aligning unit for aligning and binding the sheet members, and when the leading end of the sheet member is curled, It is an object of the present invention to provide a sheet member post-processing device that prevents a jam from occurring due to the leading end of the tip.
[0004]
Further, when the guide member that guides the leading edge of the sheet member is located at a position away from the discharge portion of the sheet member, the sheet member post-processing that prevents the leading edge of the curled sheet member from being picked up and the occurrence of jamming. It is an object to provide an apparatus.
[0005]
In addition, a sheet member post-processing device that prevents a conveyance failure such as an ear or jam from occurring due to the leading edge of the sheet member being reversed and conveyed by the guide member when the sheet member is reversed in the aligning means. The issue is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 includes a conveying member that receives and conveys a sheet member on which an image is formed from the image forming apparatus, an aligning unit that aligns the sheet members for binding, and a sheet member. A sheet member post-processing apparatus comprising: a discharge unit that conveys the sheet member to the aligning unit; a binding unit that binds the aligned sheet members; and a stacking unit that stacks a bundle of bound sheet members or unbound sheet members. the provided alignment means, a guide member for guiding the leading end of the sheet member conveyed, Bei example an inverting means for switching back the conveyed sheet member to the aligning means by said release means, said guide member It is in the vicinity of the discharge means, and with is provided at a position not in contact, guide the trailing end of the sheet member according to the direction of conveyance of the sheet A shape to decrease the guide receiving area Te, the guide area is a sheet member post-processing apparatus the sheet member is landed on said aligning means when a 0.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram illustrating a configuration of a sheet member post-processing apparatus mounted on a side surface of the image forming apparatus. As shown in FIG. 1, the sheet member post-processing device 2 is mounted on the side surface of the image forming apparatus 1. FIG. 2 is a schematic view showing a configuration of a conventional sheet member post-processing apparatus. FIG. 3 is a schematic view showing a configuration of a sheet member post-processing apparatus according to an embodiment of the present invention. Here, the sheet member post-processing apparatus 2 is a stacking unit that stacks the transport rollers 23 and 29 that are transport members for transporting the sheet member P and the aligned sheet members P as main members. A bundle of sheet members P is bound by a staple tray 34, a fence 39 that is an aligning unit that pushes and aligns the side surfaces of the sheet member P on the staple tray 34, a discharge roller 27 that is a discharge unit that discharges the sheet member P to the staple tray 34, and a bundle of sheet members P. The stapler 35 is a binding unit, and includes a sheet discharge tray 33 on which the sheet members P are stacked regardless of binding processing or non-binding processing. Further, both end portions of the leading end of the sheet member P discharged from the discharge roller 27 are provided. A receiving guide member 40 is disposed. The guide member 40 may be continuous with the fence 39 and may be a part of the configuration.
[0008]
FIG. 4 is a schematic perspective view showing a configuration of main members of the sheet member post-processing apparatus according to the embodiment of the present invention. As shown in FIG. 4, a front fence 39a disposed on the front side of the fence 39 and a rear fence 39b disposed on the rear side of the fence 39a are provided. A front guide member 40a attached to the front fence 39a by the guide member 40 and a rear guide member 40b attached to the rear fence 39b by the guide member 40 are provided.
[0009]
Here, the sheet member post-processing apparatus 2 of the present invention operates as follows. As shown in FIGS. 2 and 3, a sheet discharge sensor (not shown), an inlet roller 24, and a branch claw 28 are provided at the sheet member discharge conveyance path inlet from the image forming apparatus 1 such as a copying machine. The branch claw 28 separates the sheet member P going in the direction of the paper discharge tray 33 and the sheet member P going in the direction of the staple tray 34. In the conveyance path in the direction of the sheet discharge tray 33, a plurality of conveyance rollers 29, a sheet discharge sensor, a moving roller that moves the sheet member P to one side, a paper surface lever that moves up and down by the stacked sheet member P, and the height of the stacked sheet member P are detected. A paper surface sensor or the like is arranged. A plurality of transport rollers and the like are arranged on the transport path in the direction of the staple tray 34. The staple tray 34 is provided with a fence 39 and a return roller 41 for aligning the sheet members P, and a discharge belt 38 for discharging a bundle of sheet members P bound to the position behind the fence 39.
[0010]
The fence 39 is driven by a motor in the width direction of the sheet member P via a belt, and a return roller 41 as a reversing means is configured to perform a pendulum motion so as to come in contact with and separate from the surface of the sheet member P by a return solenoid. ing. Further, an end fence 36 for abutting against the rear end of the sheet member P is provided below the fence 39. Further, the stapler 35 is driven via a belt by a stapler moving motor (not shown) and moves laterally. The rear end of the bundle of sheet members P bound by the stapler 35 is locked by a discharge claw 37 provided on the discharge belt 34, and discharged by rotation of the discharge belt 34 driven by a discharge motor (not shown). The tray 33 is discharged.
[0011]
FIG. 5 is a schematic diagram for explaining a conveyance state of the sheet member in the sheet member post-processing apparatus according to the embodiment of the present invention.
The leading end of the sheet member P is guided by the guide member 40 and discharged onto the staple tray 34. At this time, both ends of the front end of the sheet member P are guided to the front fence 39a and the rear fence 39b, respectively. Thus, in the sheet member post-processing apparatus 2 for aligning and binding the sheet members P in a bundle, even if the leading end of the sheet member P is curled, the leading end of the sheet member P is guided and stably placed on the staple tray 34. In addition, it can be reliably discharged and transported to prevent jamming.
[0012]
FIG. 6 is an enlarged view of FIG. The guide member 40 is installed in the vicinity that does not interfere with the discharge roller 27. The discharge roller 27 is paired with a discharge driven roller 27b that is in contact with the discharge roller 27a with an appropriate pressure. As an example of the vicinity where interference does not occur, the end of the guide member 40 is perpendicular to the nip line between the discharge roller 27a and the driven roller 27b (the line connecting the center lines of the discharge roller 27a and the driven roller 27b) and the discharge roller 27a and the driven roller 27b. And a parallel line passing through the center of the discharge roller 27a. As a result, even the curled sheet member P can be reliably picked up and stably and stably discharged and conveyed onto the staple tray 34, thereby preventing jamming.
[0013]
FIG. 7 is a schematic view showing a configuration of a sheet member post-processing apparatus according to another embodiment of the present invention. FIG. 8 is a schematic perspective view for explaining a sheet member conveyance state in the sheet member post-processing apparatus according to the embodiment of the present invention. FIG. 9 is a schematic perspective view for explaining a sheet member conveyance state in the sheet member post-processing apparatus according to the embodiment of the present invention.
As shown in FIG. 7, both the front fence 39a and the rear fence 39b are inclined at the ends. As shown in FIG. 8, both ends of the leading end of the sheet member P discharged by the discharge roller 27 are guided on the front fence 39a and the rear fence 39b, respectively, and discharged to the staple tray 34. When both ends of the front end of the sheet member P discharged by the discharge roller 27 are respectively conveyed on the front fence 39a and the rear fence 39b, the guide area gradually decreases, and already on the staple tray 34 or the staple tray 34. Before landing on the stacked sheet member P, the guide area becomes zero. Further, as shown in FIG. 9, the sheet member P completely discharged to the staple tray 34 is switched back and conveyed by the return roller 41, and the leading end of the sheet member P at that time, the trailing end being discharged to the staple tray 34. That is, it passes through the hypotenuses of the front fence 39a and the rear fence 39b. Thus, when the sheet member P is reversed, the guide member 40 does not exist from the conveyance path on the staple tray 34 of the sheet member P being reversed and conveyed, and the leading end of the sheet member P is caught. Prevents poor transport such as ears and jams.
[0014]
【The invention's effect】
As described above, in the sheet member post-processing apparatus according to the present invention, when the sheet member is aligned and released to the aligning means for binding and binding, the leading end of the sheet member is guided even if it is curled. As a result, it is possible to discharge and transport the staple tray stably and securely, thereby preventing jamming.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating a configuration of a sheet member post-processing apparatus mounted on a side surface of an image forming apparatus.
FIG. 2 is a schematic view showing a configuration of a conventional sheet member post-processing apparatus.
FIG. 3 is a schematic view showing a configuration of a sheet member post-processing apparatus according to an embodiment of the present invention.
FIG. 4 is a schematic perspective view showing a configuration of main members of the sheet member post-processing apparatus according to the embodiment of the present invention.
FIG. 5 is a schematic diagram for explaining a conveyance state of a sheet member in a sheet member post-processing apparatus according to an embodiment of the present invention.
FIG. 6 is an enlarged view of FIG.
FIG. 7 is a schematic view showing a configuration of a sheet member post-processing apparatus according to another embodiment of the present invention.
FIG. 8 is a schematic perspective view for explaining a conveyance state of the sheet member in the sheet member post-processing apparatus according to the embodiment of the present invention.
FIG. 9 is a schematic perspective view for explaining a conveyance state of the sheet member in the sheet member post-processing apparatus according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Sheet | seat member post-processing apparatus 21a Under relay guide plate 21b Above relay guide plate 23 Conveyance roller 24 Entrance sensor 25, 26 Guide plate 27 Release roller 28 Separation claw 29 Conveyance roller 31 Vertical guide plate 32 Discharge guide plate 33 discharge tray 34 stearyl over Purutorei 35 stearyl over plug <br/> 36 end fence 37 discharge claw 38 discharge belt 39 fence <br/> 39a before fence 39b after fence 40 guide member 40a before the guide members 40b after the guide member 41 Return roller P sheet member

Claims (1)

A conveying member that receives and conveys a sheet member on which an image is formed from the image forming apparatus, an aligning unit that aligns the sheet member for binding, a discharge unit that conveys the sheet member to the aligning unit, and an aligned sheet member In a sheet member post-processing apparatus comprising binding means for binding, and stacking means for stacking a bundle of bound sheet members or non-binding sheet members,
A guide member that is provided in the aligning unit and guides a leading end of a sheet member that is conveyed; and a reversing unit that switches back the sheet member that is conveyed to the aligning unit by the discharge unit . When it is provided in the vicinity of the discharge means and at a position where it does not come in contact with the guide member, the guide area is reduced by guiding the rear end of the sheet member according to the sheet conveying direction, and the guide area becomes zero. A sheet member post-processing apparatus, wherein a sheet member is landed on the aligning means .

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