JP3655407B2 - Paper post-processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is installed on the rear side (sheet discharge unit side) of an image forming apparatus such as a copying machine or a printer, and binds copy paper discharged from the image forming apparatus in a state of being aligned and bundled on a staple tray ( Paper having a stapling process and discharging the bound sheet bundle to a discharge tray, and a non-stipple mode in which a copy sheet discharged from the image forming apparatus is directly discharged to the discharge tray. The present invention relates to a post-processing apparatus.
[0002]
[Prior art]
As described above, the copy sheets are placed on the rear side (sheet discharge unit side) of the image forming apparatus such as a copying machine and a printer, and the copy sheets discharged from the image forming apparatus are aligned and bundled on the staple tray. (Stipple) processing, and further, a stapling mode for discharging the bound sheet bundle to the discharge tray and a non-stipple mode for discharging the copy sheet discharged from the image forming apparatus to the discharge tray as it is. Paper post-processing devices are widely known.
Such a sheet post-processing apparatus has a sheet bundle binding processing apparatus (stipple unit). The staple unit generally includes a staple tray that receives copy paper that is carried in from the image forming apparatus, a jogger fence that aligns copy paper that is carried into the staple tray, and paper that is aligned on the staple tray. It has a stapler that staples the bundle.
For example, the paper post-processing apparatus disclosed in Japanese Patent Application Laid-Open No. 2-27691 has a configuration in which a pair of jogger fences moves from both ends of the copy paper to the center to bring the copy paper to the center. Further, the movement of the stapler for binding is performed by a drive unit different from the jogger fence.
[0003]
[Problems to be solved by the invention]
As described above, the sheet bundle aligning means in the conventional sheet post-processing apparatus is a system in which a pair of jogger fences moves from both ends of the copy sheet to the center and brings the copy sheet to the center, and there are many moving parts. Thus, since the mass increases, the load applied to the drive unit increases. In addition, since there are many operation units that operate for each copy sheet, the operation sound increases.
In addition, the conventional stippling device has a single drive unit, and the stapler moves according to the paper size and the staple closing position mode. However, since it is separate from the movement of the jogger fence, the alignment position of the paper bundle There is a possibility of deviation from This may cause a problem that the binding position differs depending on the size of the copy paper.
[0004]
Challenge of the present invention, the reference plane of the paper stack aligning can be set freely, it becomes possible and be attached to various image forming apparatuses having different copy sheet discharge standard, versatile sheet finisher Is to provide.
Challenge of the present invention, there is no difference in the binding position for each sheet size, to provide a good sheet finisher of binding position quality.
[0005]
[Means for Solving the Problems]
Upper Symbol challenges may store a plurality of copy sheets discharged from the sheet discharge unit of the image forming apparatus, aligned, and the sheet bundle binding processing apparatus for performing a binding process, a sheet bundle is stapled onto the discharge tray in the sheet post-processing apparatus having a sheet bundle dispensing device for releasing the paper bundle binding processing apparatus includes a staple tray, a side fence as a reference surface of the copy sheet to be carried into the staple tray and carried move the copy sheet in the sheet transport direction and the vertical direction one by one with the jogger fence to pressing aligned with the side fences, the service id fence and the jogger fence, the movable independently by a separate drive unit , wherein the sheet bundle binding processing apparatus having a stapler for stapling the sheet bundle on the staple tray, the stapler is integral with the side fences It is solved by a first section provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall configuration diagram of a paper post-processing apparatus according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a staple tray portion thereof, FIG. 3 is an enlarged configuration diagram of the vicinity of a paper inlet portion of the staple tray, and FIG. FIG. 5 is a perspective view from the front side of the entire pull unit, and FIG. 5 is a perspective view from the back side of the entire staple unit.
[0009]
In FIG. 1, a sheet post-processing apparatus denoted by reference numeral 100 includes a sheet conveyance system (sheet bundle discharging apparatus) denoted by reference numeral 200, a paper discharge tray denoted by reference numeral 300, and a staple unit (sheet binding) denoted by reference numeral 400. Processing device).
[0010]
Hereinafter, the specific configuration will be described together with its operation and action.
A copy sheet carried into the sheet post-processing apparatus 100 from a sheet discharge unit of an image forming apparatus (not shown) is conveyed between the upper and lower relay guide plates 202, and is conveyed by a conveyance roller 203 to a conveyance guide plate 206 and an entrance guide plate 205. It is conveyed between.
When the non-stipple mode is selected, since the branching claw 208 is normally in the non-stipple conveyance path direction position 208a, the copy paper is conveyed between the vertical guide plate 211 and the conveyance guide plate 206 by the branching claw 208, The paper is discharged onto the paper discharge tray 300 by the transport rollers 209 and 210 and the paper discharge roller 217.
When the stipple mode is selected, the leading edge of the copy sheet is detected by the entrance sensor 204, and at the same time, the branching claw 208 at the non-stipple conveyance path direction position 208a is moved in the direction of the staple conveyance path by the operation of the branching claw sonolide (not shown) Rotates to position 208b. Accordingly, the copy sheet is discharged onto the staple tray 401 along the side surface of the branching claw 208 by the transport roller 207.
The side surface of the branching claw 208 at the staple conveyance path direction position 208 b is set to an angle at which copy paper can smoothly enter the paper receiving portions of the jogger fence 402 and the side fence 408 provided on the staple tray 401. .
[0011]
At the same time that the trailing edge of the copy sheet passes through the transport roller 207, the branch claw solenoid is turned off, the branch claw 208 at the staple transport path direction position 208b rotates to the non-stipple transport path direction position 208a, and the staple transport path is closed.
As a result, the copy paper once discharged onto the staple tray 401 does not return to the transport roller 207 again, but the trailing edge falls downward along the guide member 409 by the operation of the tapping roller 219, and the end fence Fits on 403.
[0012]
The timing at which the branching claw 208 at the staple conveyance path direction position 208b rotates to the non-stipple conveyance path direction position 208a is determined by the entrance sensor 204 detecting the trailing edge of the copy sheet.
When the copy sheet falls on the end fence 403, the jogger fence 402 that has been waiting in advance at a position 10 mm away from the width of the copy sheet is opposed to the jogger fence 402 and is stopped at a position separated by 10 mm from the end surface of the copy sheet. It moves in the direction of the fence 408 and presses and aligns the copy paper against the side fence surface.
An open / close paper discharge guide plate 212 having a paper discharge driven roller 213 is provided above the staple tray 401, and can be opened / closed by a drive motor 214, a gear 215, and a cylindrical cam 216.
[0013]
When the staple mode is selected, the open / close paper discharge guide plate 212 is moved to the release position. The distance from the end fence 403 to the tip of the staple tray 401 is 300 mm, and the distance from the end fence 403 to the paper discharge roller 217 is 80 mm. Are discharged with the leading edge of the copy paper protruding from the paper discharge roller 217 and stacked. Since the distance from the transport roller 207 to the paper discharge roller 217 is 320 mm, when stacking copy paper longer in the transport direction than this, the front end of the copy paper jumps out from the paper discharge roller 217 and is stacked.
[0014]
When the next copy sheet reaches the entrance sensor 204, the above-described series of operations is repeated again, and the above-described operation is sequentially repeated for each of a plurality of copy sheets discharged from the image forming apparatus.
When a predetermined number of copy sheets are stacked and aligned on the staple tray 401 and subjected to the binding process by the stapler 400, the discharge belt 405 is rotated by driving the motor 406, and the discharge claw 404 fixed to the discharge belt 405. Lifts the rear edge of the stack of paper.
When the sheet bundle is lifted up to the vicinity of the leading end of the staple tray 401, the open / close sheet discharge guide plate 212 is closed, and the sheet bundle is conveyed by driving the sheet discharge roller 217 and discharged to the sheet discharge tray 300. When the sheet bundle is completely discharged to the sheet discharge tray 300, the open / close sheet discharge guide plate 212 moves to the release position again, and the next series of copy sheets is stacked on the staple tray 401.
[0015]
Here, the stipple unit indicated by reference numeral 400 will be described in more detail.
As shown in FIG. 5, the jogger fence 402 and the side fence 408 move along a guide shaft 417 fixed to the staple tray 401 in a direction perpendicular to the paper discharge direction. The jogger fence 402 can be moved by the driving stepping motor 414 via the timing belt 415, and the side fence 408 is moved by the driving stepping motor 411 and the timing belt 412. Reference numerals 413 and 416 denote pulleys around the timing belts 412 and 415.
When the copy sheet is conveyed to the staple unit and the rear end of the copy sheet is received in the end fence 403 provided below the staple tray 401, as described above, 10 mm from the side in the width direction of the copy sheet from the home position in advance. The jogger fence 402 that has moved to the distant position is also moved to a position that is 10 mm away from the end face on the copy paper side, starts moving in the direction of the stopped side fence 408, moves forward by 20 mm, and moves to the copy paper side The end surface is pressed against the reference surface of the side fence 408. The jogger fence 402 moves backward, returns again to a position 10 mm away from the end face on the copy paper side, stops, repeats the above operation when the next copy paper is discharged and fits in the end fence 403.
When the above-described series of operations are repeated for a plurality of copy sheets and the bundle of sheets is finished, the stapler 400 integrated by the side fence 408 and the fixing member 410 is operated, and the back corner portion of the bundle of sheets is operated. A closing process is applied to.
When the sheet bundle is closed, as described above, the discharge belt 405 rotates, the discharge claw 404 fixed to the discharge belt 405 lifts the rear end of the sheet bundle, and the sheet bundle is moved to the upper surface of the staple tray 401. And is discharged to the paper discharge tray 300.
[0016]
In such an embodiment, a sheet bundle binding processing device that stores, aligns, and binds a plurality of copy sheets discharged from the sheet discharge unit of the image forming apparatus, and a bound sheet bundle. In the sheet post-processing apparatus having a sheet bundle discharge device that discharges the sheet onto the sheet discharge tray 300, the sheet bundle binding processing apparatus serves as a staple tray 401 and a reference plane for copy sheets carried into the staple tray 401. A side fence 408 and a jogger fence 402 that moves the copy paper to be carried one by one in the direction perpendicular to the paper conveyance direction and presses and matches the side fence 408, and the side fence 408 and the jogger fence 402 are individually provided. Independently of the size of the copy paper by the drive unit (drive stepping motor 411, drive stepping motor 414) Therefore, the jogger fence 402 and the side fence 408 for aligning the sheet bundle can be independently moved by separate drive units (drive stepping motor 411, drive stepping motor 414). The reference plane can be freely set, and can be mounted on various image forming apparatuses having different copy sheet discharge standards, and a highly versatile sheet post-processing apparatus can be provided.
In the embodiment, the sheet bundle binding processing apparatus has the stapler 400 that binds the sheet bundle on the staple tray 401, and the stapler 400 is installed integrally with the side fence 408. Therefore, it is possible to provide a sheet post-processing apparatus that has no difference in binding position with respect to each sheet size and has high binding position quality.
In the embodiment, the jogger fence 402 and the side fence 408 have a predetermined distance from the side end face in the width direction of the copy paper discharged on the staple tray 401 in advance when the staple mode is selected. When the copy paper is discharged onto the staple tray 401, only the jogger fence 402 moves in the direction of the side fence 408, and the copy paper is pressed against the side fence 408 to perform alignment operation. Therefore, it is only necessary to drive the jogger fence 402 for each of a plurality of copy sheets to be ejected, and as a result, a paper post-processing apparatus that requires less load on the drive unit and that has a low operating sound can be provided. it can.
[0017]
【The invention's effect】
According to the first aspect of the invention, Ri movable der by jogger fences and side fences independently in separate driving unit for aligning the paper bundle, integral with the side fence stapler is the reference of the sheet bundle aligning because going on provided, the position of the side fences as a reference plane of the paper stack aligning can be set freely, it is it is possible to mount the various image forming apparatuses having different copy sheet discharge standard, general purpose Therefore, it is possible to provide a sheet post-processing apparatus having a good binding position quality with no difference in binding position with respect to each sheet size.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a sheet post-processing apparatus according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of the staple tray portion.
FIG. 3 is an enlarged configuration diagram in the vicinity of a paper inlet portion of a staple tray.
FIG. 4 is a perspective view from the front side of the entire staple unit.
FIG. 5 is a perspective view from the back side of the entire staple unit.
[Explanation of symbols]
201 Lower relay guide plate 202 Upper relay guide plate 203 Conveying roller 204 Entrance sensor 205 Inlet lower guide plate 206 Conveying guide plate 207 Conveying roller 208 Branching claws 209 and 210 Conveying roller 211 Vertical guide plate 212 Opening / closing discharge guide plate 214 Drive motor 215 Gear 216 Cylindrical cam 217 Paper discharge roller 219 Strike roller 300 Paper discharge tray 400 Stapler 401 Staple tray 402 Jogger fence 408 Side fence 411 Drive stepping motor 414 Drive stepping motor

Claims (1)

A sheet bundle binding processing apparatus that stores, aligns, and binds a plurality of copy sheets discharged from the sheet discharge unit of the image forming apparatus, and a sheet bundle discharge device that discharges the bound sheet bundle onto the discharge tray. In a paper post-processing apparatus having
The paper bundle binding processing apparatus moves the staple tray, a side fence as a reference surface of the copy sheet to be carried into the staple tray, the copy paper in the paper transport direction and the vertical direction one by one to be carried includes a jogger fence to match pressed against the side fence Te,
Said service id fence and the jogger fence, the movable independently by a separate drive unit,
The sheet bundle binding processing apparatus includes a stapler that binds a sheet bundle on the staple tray, and the stapler is installed integrally with the side fence .

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