JP2000198612A - Paper sheets processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of the filing work by controlling the punching so as to punch a tip and a rear end of a recording paper with a mode of copying plural documents on one recording paper with a single-sided copying mode. SOLUTION: Position and number of punch hole 110 to be formed in a recording paper is changed in response to a copying mode, for example, punch holes are drilled at a tip and a rear end of the recording paper or drilled at two positions of a central part. A copy mode of copying two pieces of documents on the single side of a recording paper and a punch mode of drilling a punch hole at a tip and a rear end of the recording paper P are selected when necessary. Punch holes 110 are automatically provided at the tip and the rear end of the recording paper P. The drilled recording paper P is folded into two so that an image formed surface is arranged outside, and both the punch holes 110 are overlapped with each other so that filing can be performed immediately. With this structure, filing holes 10 can be formed at positions easy to be filed at the time of filing, and the total working time including the work from drilling to the filing can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet processing apparatus which is attached to an image forming apparatus or is integrated with the image forming apparatus as a system. More specifically, the present invention relates to a paper processing apparatus in which an image is formed by image forming means. The present invention relates to a paper processing apparatus having a punch unit for punching filing holes for recording paper on which an image has been formed, and further has a discharge tray for stacking recording paper on which an image has been formed, and a staple device in addition to these. To a paper processing apparatus.

[0002]

2. Description of the Related Art In a process of receiving an image-formed recording sheet discharged from a sheet discharge unit of an image forming apparatus and conveying the same on a conveyance path, a punching unit provided in the conveyance path punches a filing punch on the recording sheet. There has been proposed a paper processing apparatus capable of performing a so-called punching process for forming a hole.

In such a paper processing apparatus, in a normal copy mode in which the image forming apparatus copies one original on one side of one recording sheet, the image forming apparatus applies one original to one end of the recording sheet. A normal punch mode for performing a punching process is executed. For example, a rotary punch unit is known to perform such a punching process. In a rotary punch unit, for example, in the case of a two-hole punch, two sets of punches and dies are arranged in a straight line in a direction orthogonal to the sheet conveyance direction, and the punches and dies are mounted on a rotating roller. When the rollers rotate simultaneously, the punch and the die overlap, and two holes are formed in the paper.

On the other hand, in recent years, digitization of image forming apparatuses has progressed, and so-called weekly magazine copy (saddle stitch copy) has been made possible by image processing. In saddle-stitch copying, binding is performed by folding the book in half at the center of the copied paper, so that the binding process is also performed at the center of the paper by the saddle-stitch stapler, and a punch hole is also formed near the center of the paper. It was necessary to make punch holes in places (four holes in the case of two holes), that is, in such a form that filing could be performed when the paper was folded in half in the center.

[0005]

In the image forming apparatus, in addition to the normal copy mode, a copy mode (2) for copying a plurality of documents on one sheet of recording paper is included in the copy mode. In one mode, four in one mode, etc.). More specifically, a copy mode in which a plurality of (for example, two) originals are copied on one side of a recording sheet, and a plurality of (for example, a total of four sheets of two) each on both sides of the recording sheet
There is a copy mode for copying originals. When such a special copy mode is selected and the punch mode is selected, it is desired to improve the filing work efficiency by performing an appropriate punching process.

On the other hand, a sheet processing apparatus having a staple device in addition to the punch mode is also known. In a paper processing apparatus that also includes such a stapling apparatus, if the stapling is performed even though the ring file is available by performing the punching processing, the punching processing becomes meaningless, and the processing is not performed. It can be wasted.
When the treatment is wasted in this way, the image must be formed again to perform the punching process, and the recording paper and the staples are wasted.

Further, as described above, when punching a punched hole so that filing can be performed when the recording paper is folded in half at the center, two sets of punches and dies are provided in a direction orthogonal to the recording paper conveyance direction. Since only the first punch hole was provided in a straight line, when a punch hole for saddle stitching was drilled, the first punch hole was drilled, and then another rotation was made to drill a second punch hole. In such a configuration,
If a hole for a saddle stitch is to be made in a recording sheet discharged from a highly productive image forming apparatus having a high copy speed (image forming speed), it takes time to make another rotation after forming the first punch hole. There was a problem that it disappeared.

When a first punch hole is made in a recording sheet discharged from the image forming apparatus, basically, the punching and the die speed are adjusted in accordance with the recording sheet transport speed. However, when moving to the operation of drilling the second punch hole at the same speed, when the second punch hole is bent to a predetermined position, in other words, when the second punch hole is folded in half, the drilling positions of the first and second punch holes match. I can't get to where you are.

All the holes need only be holes for saddle stitching. However, if holes for saddle stitching are not required, that is, holes for single stitching are formed near the end of the recording paper. This must be addressed when required.

In the case where a hole for saddle stitching is formed on recording paper in one job, if the hole for saddle stitching is formed in the same position on all recording papers in one job, the recording paper is removed. There is a problem that the punch hole is shifted due to the thickness of the recording paper when the booklet is folded in half from the center and stapled. If the punch holes are displaced when folded as described above, inconvenience may occur in filing, and there may be a case where there is no point in drilling a hole for saddle stitching. At this time, the greater the thickness of the recording paper, the more noticeable the deviation of the punch holes.

SUMMARY OF THE INVENTION The present invention has been made in view of such a background, and a first object of the present invention is to provide a sheet processing apparatus capable of performing a punching operation capable of efficiently performing a filing operation when a special copying mode is selected. It is to provide a device.

It is a second object of the present invention to provide a sheet processing apparatus in which a stapling process for binding a recording sheet cannot be executed when a punching process is selected.

A third object of the present invention is to perform a plurality of punching processes on the leading and trailing edges or the center of a recording sheet copied in a copy mode of a plurality of originals on one sheet of recording paper, thereby performing a filing operation. It is an object of the present invention to provide a sheet processing apparatus capable of efficiently performing the sheet processing.

A fourth object is to automatically switch between a mode in which staple processing is performed at the center and a mode in which staple processing is performed on an end portion according to the selected punch processing mode, thereby eliminating staple processing errors. An object of the present invention is to provide a processing device.

A fifth object of the present invention is to provide a sheet processing apparatus capable of forming a saddle stitching punch hole without reducing productivity.

A sixth object of the present invention is to provide a sheet processing apparatus in which a punch hole for saddle stitching can be accurately overlapped when a recording sheet is bent at the center, and a punch hole shape and a punch hole position of stable quality can be obtained. Is to provide.

A seventh object of the present invention is to provide a sheet processing apparatus capable of punching a single binding punch hole at an end of a recording sheet by a saddle stitching punch unit.

An eighth object of the present invention is to provide a sheet processing apparatus capable of punching a recording sheet so that a punch hole does not shift due to a thickness of the recording sheet when filing the recording sheet.

[0019]

In order to achieve the above object, a first means is a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after an image is formed. In a mode in which a document is copied onto one sheet of recording paper, control is performed such that punch processing is performed on the leading and trailing ends of the recording paper.

The second means is that in a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after forming an image, a mode of copying a plurality of documents on one recording sheet is used. It is characterized in that control is performed such that a plurality of punching processes are performed at the center.

The third means is that, in the first or second means, when the copy mode is switched to a normal mode in which one document is copied onto one sheet of recording paper, one side end face of the recording sheet is provided. It is characterized in that control is performed so as to switch to a punch mode so as to perform a punching process.

The fourth means is characterized in that, in the first or second means, when the copy mode is prohibited, the control is performed such that the punching operation is prohibited.

The fifth means is a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after forming an image, in a mode in which a plurality of originals are copied onto one recording sheet in a single-sided copying mode. A first punch mode for performing a punching process on the leading and trailing edges of the recording paper, and a second punching mode for performing a plurality of punching processes on a central portion of the recording paper; When one of the modes is selected, if the recording sheet in the short direction is selected from the recording sheets set in the sheet feeding unit for feeding the image forming means, the punch mode is executed. Is controlled to be prohibited.

The sixth means is a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after image formation and a discharge tray for receiving a stack of recording sheets and stacking the recording sheet bundle. In a mode in which a document is copied onto one sheet of recording paper, a first punch mode in which a leading edge and a trailing edge of the recording sheet are punched, and a second punch mode in which a plurality of punching operations are performed in the center of the recording sheet In the case where one of the image surfaces of the recording paper is formed with one image in the double-sided copy mode, the control is performed so that the execution of the punch mode is prohibited.

The seventh means is a paper processing apparatus provided with a punch unit for punching a punched hole in the recording paper after image formation and a stapling device for stapling the recording paper bundle, and a plurality of originals in a single-sided copy mode. In a mode in which is copied onto one sheet of recording paper, a first punch mode in which the leading edge and the trailing edge of the recording sheet are punched, and a second punch mode in which a plurality of punching processes are performed in the center of the recording sheet. And when one of the first and second punch modes is selected, control is performed so as to prohibit execution of the staple mode for performing the staple binding.

An eighth means is provided in the fifth, sixth or seventh means, when the execution is prohibited, to that effect,
It is characterized by displaying.

A ninth means is a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet discharged from an image forming apparatus and a stapling apparatus for stapling a recording sheet bundle in a single-sided copying mode. Multiple manuscripts 1
In the mode of copying on a sheet of recording paper, there are a first punch mode in which the leading edge and the trailing edge of the recording sheet are punched, and a second punch mode in which a plurality of punching processes are performed in the center of the recording sheet. When one of the first and second punch modes is selected and the staple mode for performing the staple binding is selected, the transport path is set so that the recording sheet is not transported to the staple device. Is switched. In this case, a message indicating that the transport route has been switched may be displayed.

A tenth means is a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after forming an image and a stapling apparatus for stapling a bundle of recording sheets. In a mode in which is copied onto one sheet of recording paper, a first punch mode in which the leading edge and the trailing edge of the recording sheet are punched, and a second punch mode in which a plurality of punching processes are performed in the center of the recording sheet. And control means for automatically switching stapling processing for the recording sheets stacked on the staple tray according to the selected punch mode.

The eleventh means is characterized in that the control means in the tenth means selects the mode in which the end of the recording paper bundle is stapled in the mode in which the edge of the recording paper is punched. When the mode is changed to a mode in which a plurality of punching processes are performed on the central portion of the recording paper, or a mode in which the punching process is performed on the front and rear ends, the mode is switched to a mode in which the central portion of the recording paper bundle is stapled. .

A twelfth means is a mode in which the control means in the tenth means performs a plurality of punching processes on a central portion of the recording paper or a mode in which a leading edge and a trailing edge are punched. If the mode for punching the edge of the recording paper is changed while the mode for stapling the set is selected, the mode is switched to the mode for stapling the edge of the recording paper bundle. .

The thirteenth means is that, when the control means in the eleventh or twelfth means selects the punch mode and the staple mode corresponding to the punch mode, when the staple mode is changed, The punch mode is switched according to the staple mode.

The fourteenth means is characterized by further comprising a display means for displaying that the mode change has been executed by the control means in the eleventh or twelfth means.

A fifteenth means is a paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after image formation, wherein the punch unit is arranged in a direction perpendicular to the recording sheet conveyance direction. A plurality of sections.

The sixteenth means is the fifteenth means,
The plurality of rows of perforated portions are provided in first and second two rows, and after a first perforated portion is made on the conveyed recording paper by the first perforated portion, a second perforated portion is provided by the second perforated portion. Is performed.

The seventeenth means is the sixteenth means,
After performing the first perforation in the first perforated portion, while performing the second perforated portion in the second perforated portion, the feed speed of the perforated portion and / or the transport speed of the recording paper for performing the perforated portion are changed. It is characterized by comprising a speed control means for changing.

The eighteenth means is the seventeenth means,
The change in the speed by the speed control means is such that when the recording paper is bent at the center after the perforation, the punch hole formed by the second perforation matches the punch hole formed by the first perforation. Features.

The nineteenth means is the sixteenth means,
When perforating near the end of the recording paper, the perforation is performed at the first perforated portion.

According to a twentieth means, in the fifteenth means,
A control unit is provided for setting a punching timing for each row of the plurality of rows of punching units, and the control unit sets the punching timing to a different value within one image forming job.

According to a twenty-first means, in the twentieth means,
The control means sets the punching timing to a different value according to the thickness of the recording paper.

A twenty-second means is the twentieth or twenty-first means, wherein the speed control means for changing the feed speed of the perforation section and / or the conveying speed of the recording paper in accordance with the perforation timing set by the control means. It is further characterized by being provided.

[0041]

Embodiments of the present invention will be described below with reference to the drawings.

1. First Embodiment FIG. 1 is a configuration diagram of an entire sheet processing apparatus according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a driving mechanism of a jogger fence and a return roller, and FIG. FIG. 4 is a perspective view mainly showing a staple device, FIG. 5 is a perspective view showing a state in which a bundle of recording paper is discharged by a discharge belt, and FIG. 6 is an enlarged view of a main part. FIG. 7 is a perspective view showing a sheet ejection tray up-down mechanism, FIG. 8 is a configuration diagram of a punch unit, and FIG. 9 is a sheet processing apparatus according to a first embodiment of the present invention. FIG. 2 is a block diagram of the electrical system of FIG.

1.1 Mechanical Configuration of Sheet Processing Apparatus In FIG. 1, a sheet processing apparatus M includes an entrance sensor 36, an entrance roller 1, and a branch claw at the entrance of a recording paper discharge conveyance path from an image forming apparatus (copier). The branch claw 8 separates recording paper going in the direction of the paper discharge tray 12 and recording paper going in the direction of the staple device (staple unit) 11. Further, a punch unit A described later is installed near the upstream side of the branch claw 8.

The transport path in the direction of the paper discharge tray 12 includes a plurality of upper transport rollers 2, a paper discharge sensor 38, a discharge roller 3, a pulling roller 7 for moving recording paper to one side, a paper surface lever 13 which moves up and down by the stacked recording paper, A paper surface sensor 33 for detecting the height of the stacked recording paper is disposed. On the other hand, in the transport path in the direction of the staple device 11, a plurality of lower transport rollers 4, a paper discharge sensor 37, a brush roller 6 as a paper feed roller, and the like are arranged. The lower transport roller 4 is provided with a transport motor 5 described later.
4, the paper discharge tray 12 is moved up, down, left and right by a vertical motor 51 and a shift motor 52, which will be described later.

The staple device 11 is provided below the staple tray 21. The staple tray 21 has a jogger fence 9 for aligning recording paper, a return roller 5, and a position behind the jogger fence 9. Discharge belts 10 for discharging the stapled bundle of recording paper are arranged. Reference numeral 39 denotes a discharge belt home sensor. As shown in FIG. 2, the jogger fence 9 is driven in the width direction of the recording paper by a jogger motor 26 via a jogger belt 49, and the return roller 5 is moved by a return solenoid 30 so as to move toward and away from the recording paper. It is configured to be. The brush roller 6 is configured to rotate in a direction indicated by an arrow in FIG. As shown in FIG. 3, a rear end fence 19 is provided below the jogger fence 9 for abutting against the rear end of the recording paper. As shown in FIG. 4, the stapling apparatus 11 is driven by the stapler moving motor 27 via the stapling belt 50 and moves laterally. Reference numeral 22 denotes a stapler home sensor. The rear end fence 19 is a fixed piece 1
9a and 19b, and movable pieces 19c and 19d that move together when the stipple device 11 moves.

Even if the paper ejection sensor 37 detects the trailing end of the recording paper and immediately issues an ON command to the return solenoid 30 to operate the return roller 5, the return roller 5 is driven at the timing by the return roller 5. It is arranged at a position where it can be hit against the end. Further, as shown in FIG. 5, the trailing end of the recording paper bundle bound by the staple device 11 is locked by a discharge claw 10 a provided on the discharge belt 10, and the discharge belt 10 is driven by a discharge motor 57. The paper is discharged to the paper discharge tray 12 by rotation.

As shown in FIG. 6, a mechanism for performing a shift operation for moving the discharge tray 12 right and left includes a shift motor 52, the cylindrical cam 24 driven by the shift motor 52, and the discharge tray 12 And an engaging projection 23a which engages with a spiral cam groove formed on the peripheral surface of the cylindrical cam 24. 35
Is a shift sensor for detecting the stop position of the end face 23. As shown in FIG. 7, the vertical movement of the discharge tray 12 is performed by a vertical motor 51 via a gear train and a discharge tray belt, and the rotation of the discharge roller 3 is controlled by a discharge motor 55 via a drive belt. Will be

The punch unit A is, as shown in FIG.
The punch 102 includes a die 103 facing the punch 102 with the recording paper path interposed therebetween, and a punch motor 101 (see FIG. 9) for operating the punch 102 and the die 103. Below the punch unit A,
A collection box 104 is provided for collecting a piece of paper 105 that has been punched and dropped.

1.2 Electrical Configuration of Sheet Processing Apparatus Next, an electrical system of the sheet processing apparatus configured as described above will be described with reference to FIG.

As shown in FIG. 9, signals from each switch and each sensor in the sheet processing apparatus M are input to the CPU 70 via the I / O interface 60. CPU7
0 indicates a vertical motor 51, a shift motor 52, a branch solenoid 53, and a return solenoid 3 according to the input signal.
0, a transport motor 54, a paper discharge motor 55, a staple motor 56, a discharge motor 57, a stapler moving motor 27,
The jogger motor 26 and the punch motor 101 are driven.
The pulse signal of the transport motor 54 is input to the CPU 70 and counted, and the return solenoid 30 is controlled according to the count. The recording paper alignment control means is a CPU 70
And various operation programs for operating the CPU 70.

1.3 Operation Mode 1.3.1 Non-Stipple Mode Next, the operation when the non-stipple mode in which no stapling is performed in the above embodiment is selected will be described.

The copied recording paper is received by the entrance roller 1, sent by the upper transport roller 2, and discharged by the discharge roller 3 onto the discharge tray 12. Then, the recording paper is aligned in the vertical direction by the shifting roller 7 and is stacked on the paper discharge tray 12. At this time, the shifting roller 7
Is decelerated when the paper ejection sensor 38 detects the trailing edge of the recording paper, thereby improving the stacking property. When the copied recording paper is sequentially discharged, the paper surface lever 13 moves up (swings clockwise), and this is detected by the paper surface sensor 33. 12 is lowered and always kept at the proper height. In the sort and stack modes, the discharge tray 12 is shifted left and right by the shift motor 52 in accordance with a partition signal output from a control panel or the like of the apparatus main body, and sorting is performed until the end of the job. In the shift operation, the cylindrical cam 24 driven by the shift motor 52 engages with the engagement protrusion 23a provided integrally with the end fence 23, and the end fence 2
3 is performed by sliding. The stop position is detected by the shift sensor 35. At the end of the job, the paper discharge tray 12 is lowered by about 30 mm.

1.3.2 Stipple Mode Next, the case where the staple mode is selected will be described.

When the staple mode is selected, as shown in FIG. 2, the jogger fence 9 moves from the home position and stands by at a position 7 mm away from the recording paper width on one side. The recording paper is transferred to the lower transport roller 4 (transport motor 5
When the trailing edge of the recording paper passes the paper ejection sensor 37, the jogger fence 9 jogs (reciprocates in the direction of the arrow) 5 mm inward from the standby position. Further, the paper discharge sensor 37 detects this at the time of passing the trailing edge of the recording paper, and inputs the signal to the CPU 70. The CPU 70 counts the transmission pulse from the conveyance motor 54 from the time of receiving this signal, and After the transmission, the return solenoid 30 is turned on. Return roller 5
Makes a pendulum motion when the return solenoid 30 is turned on and off. When the return solenoid 30 is turned on, it hits the recording paper to return downward and strikes the rear end fence 19 to vertically align the recording paper. The recording paper stored in the staple tray 21 is the entrance sensor 3
6 (or the sheet ejection sensor 37), the signal is input to the CPU 70, and the number of recording sheets is counted. After a lapse of a predetermined time after the return solenoid 30 is turned off, the jogger fence 9 is moved inward by 2 mm by the jogger motor 26 and temporarily stopped, thereby completing the horizontal alignment of the recording paper. The jogger fence 9 is then
Return millimeters and wait for the next recording paper. This operation is performed up to the last page. On the last page, jogging of 7 mm is performed again, and both ends of the recording paper bundle are pressed to prepare for the stapling operation.

Then, after a predetermined time, the staple device 11
Operates to perform the binding process. At this time, if a plurality of bindings are specified, the stapling movement motor 27 is driven after the binding processing at one location is completed, and the staple device 1
1 is moved to an appropriate position along the rear end of the recording paper, and the second binding process is performed. When the binding process is completed, the ejection motor 57 is driven, and the ejection belt 10 is driven. At this time, the paper discharge motor 55 is also driven, and starts rotating to receive the recording paper bundle lifted by the discharge claw 10a. At this time, the operation of the jogger fence 9 is controlled so as to differ depending on the size and the number of the joggers. For example, when the number of sheets to be bound is smaller than the set number or smaller than the set size, the trailing end of the sheet bundle is hooked and conveyed by the ejection claw 10a while the sheet bundle is held by the jogger fence 9. Then, from the release belt home sensor 39,
After a predetermined pulse, the jogger fence 9 is retracted by 2 mm, and the constraint on the recording paper by the jogger fence 9 is released (this predetermined pulse is applied after the ejection claw 10a collides with the rear end of the recording paper bundle, and then the leading edge of the jogger fence 9 is released). Is set between exits). When the number of sheets to be stapled is larger than the set number or larger than the set size, the jogger fence 9 is retracted by 2 mm in advance, and the discharge is performed. In either case, when the recording paper bundle passes through the jogger fence 9, the jogger fence 9 further moves by 5 mm, returns to the standby position, and prepares for the next recording paper. Also, depending on the distance of the jogger fence 9 with respect to the recording paper,
It is also possible to adjust the binding force.

The above series of operations are repeated until the last job.

1.3.3 Punch Mode When the punch mode is selected, each time a recording sheet passes through the punch unit A, the punch unit A is driven by the punch motor 101 to punch a punch hole in the recording sheet. . That is, the trailing edge of the recording paper is detected by the entrance sensor 36, and after a predetermined time, the punch motor 101 is driven.
Punch holes are drilled. Punch motor 10 always synchronized
A punch hole is punched by a punch 102 and a die 103 which are configured to rotate by 1, and a paper piece 105 is stored in a collection box 104.

1.3.3.1 Form of Punching Process Next, the format of the punching process performed on the recording paper will be described with reference to FIGS. FIG. 10 is a diagram showing a recording sheet having a punched edge at the front and rear ends, FIG. 11 is a diagram showing a state where the recording sheet shown in FIG. 10 is folded, and FIG. FIG. 13 is a diagram showing the folded recording paper, and FIG. 13 is a diagram showing a state where the recording paper shown in FIG. 12 is folded.

In the present invention, the positions and the number of punch holes 110 to be made in the recording paper in the copy mode are changed so as to be made at the leading and trailing ends of the recording paper or at two places at the center. For example, two originals of A4 are copied to one of A3
A copy mode in which copying is performed on one side of a sheet of recording paper;
When the punch mode in which punch holes 110 are formed at the front and rear ends of the recording paper P is selected, the punch holes 110 are automatically formed at the front and rear ends of the recording paper P as shown in FIG. When the perforated recording paper P is folded in two, as shown in FIG. 11, with the image side facing out, the punched holes 110 just come together, and filing can be performed immediately. Also,
Using two-sided copy mode, two A4 originals on the front,
A copy mode in which four A4 originals are copied on one A3 recording paper, such as two A4 originals on the back side, and punch holes 110 are made in two central portions of the recording paper P. When the mode is selected, a punch hole 110 is automatically formed in the center as shown in FIG. When the perforated recording paper P is folded in two as shown in FIG. 13, the punch holes 110 just come into contact with each other, and filing can be performed immediately.

As described above, when the punch mode is selected according to the copy mode, the punch hole 110 is formed at a place where filing is easy at the time of filing, so that the total work time including the work of filing after drilling can be reduced. In this embodiment, an A4 document has been described. However, when copying a plurality of documents on one sheet of recording paper P for other sizes, similar processing can be performed. Further, the case where the number of originals is two and four has been described, but the same applies to the case of more than that.

1.3.3.2 Punching of Leading Edge and Trailing Edge of Recording Paper Next, the punching operation of the leading edge and trailing edge of the recording paper P will be described.

After receiving the recording paper P discharged from the image forming apparatus (copier) 81 and detecting the leading end of the recording paper P by the entrance sensor 36, the punch unit A
Is driven by a punch motor 101 to make a punch hole 110 at the leading end of the recording paper P. When the entrance sensor 36 is the recording paper P
When the trailing edge of the recording paper P is detected, the punch unit A is driven by the punch motor 101 after a predetermined time, and a punch hole 110 is formed in the trailing edge of the recording paper P. Thus, FIG.
As shown in FIG.
0 is burned. In this case, the trigger for punching the punched hole 110 is performed separately for the leading edge and the trailing edge of the recording paper P.
The timing may be performed only at the tip.

1.3.3.3 Punching process at the center of recording paper When punching a hole at the center of the recording paper P, the recording paper P discharged from the image forming apparatus is received. When the entrance sensor 36 detects the leading end of the recording paper P, the punch unit A is driven by the punch motor 101 after a predetermined time, first punches a punch hole 110 once in the center of the recording paper P, and then after a predetermined timing, the punch unit A Is driven by a punch motor 101 to make a second punch hole 110 in the center of the recording paper P. Thus, FIG.
As shown in FIG. 2, two punch holes 110 are formed at the center.

1.3.3.4 Normal Punch Processing From the above-mentioned special copy mode (a mode in which a plurality of originals are copied on one side or both sides of a recording sheet), a normal copy mode (one original is When the mode is switched to the mode of copying on a sheet of recording paper), normal punch processing is performed.
That is, as shown in FIG. 23, a punch hole 110 is formed in one end surface of the recording paper P. By switching the punch mode in this manner, unnecessary punching processing can be eliminated, and re-copying for eliminating filing defects caused by the punch holes 110 being excessively bright can be omitted. Therefore, waste of recording paper can be eliminated.

If a copy cannot be made on one recording paper P while a plurality of originals are being copied on one recording paper P, the punch mode described above is not performed. By doing so, waste of recording paper can be eliminated in the same manner as described above.

1.3.3.5 Punch Check Processing Next, the punch check will be described with reference to the flowchart of FIG. This flowchart shows a process for checking where the recording sheet discharged from the image forming apparatus is to be punched. In this process,
First, it is checked whether the punch mode start flag (start F) is set, that is, whether it is set to "1" (step S1). If the start flag (start F) is set, step S2 is performed. Is performed to determine whether the mode is the punch mode. On the other hand, when the activation flag (activation F) is not set, the routine returns. The start flag is transmitted from the image forming apparatus to the sheet processing apparatus by a start signal. When the sheet processing apparatus receives the start signal, the start signal is internally replaced with a start flag (a start signal is transmitted when a recording sheet is discharged from the image forming apparatus to the sheet processing apparatus. Start the transport unit, etc.). If the check in step S2 indicates that the mode is the punch mode, a determination process is performed in step S3 to determine whether the mode is the leading edge or trailing edge punch mode.

The leading and trailing edge punch mode determination processing in step S3 determines whether the punch mode in step S2 is a mode in which the leading and trailing edges of the recording paper P are punched. If it is determined that the mode is the punch mode, the punch flag 1 (punch F1) is set (step S4). If the mode is not the leading edge or trailing edge punch mode, a process of determining whether or not the mode is a mode of performing a punching process on the central portion of the recording paper P in step S5 is executed. If it is determined that the mode is the center punch mode, the punch flag (punch F2) is set (step S6), and if it is determined that the mode is not the center punch mode, the process returns. By the return, the punching process is performed on one end face of the ordinary recording paper.

1.3.3.6 Entrance Sensor ON Check Next, the procedure of the entrance sensor ON check for checking whether the entrance sensor 36 has been turned ON will be described with reference to the flowchart of FIG. This processing is to check whether the recording paper discharged from the image forming apparatus has been conveyed to the entrance sensor 36 of the paper processing apparatus. In this process, first, it is checked whether the entrance sensor 36 has been turned on (step S11), and if it has been turned on, the process of step S12 is performed. If the entrance sensor 36 is off, it is checked whether TIM1CU is greater than 100 (step S10). If TIM1CU is larger than 100, a subroutine for jam is called (step 17). Accordingly, a jam signal is transmitted from the sheet processing apparatus to the image forming apparatus, and it is recognized that the sheet processing apparatus has been jammed. When TIM1CU is 100 or less, the routine returns.

If it is determined in step S11 that the entrance sensor 36 is on, then in step S12 the punch timer 1
Is cleared, that is, “0”, and furthermore, step S13
To check whether the punch flag 1 (punch F1) is set. When the punch flag 1 (punch F1) is set, the punch job counter (PUNC)
JC) is set to "1" (step S14). If the punch flag 1 (punch F1) is not set,
Further, in step 15, punch flag 2 (punch F2)
Check if is set. If the punch flag 2 (punch F2) is set in this check, the punch job counter (PUNCJ) is set in step S14.
C) is set to "1", and if the punch flag 1 is not set, the routine returns.

1.3.3.7 Inlet Sensor Off Check Next, the inlet sensor off check for checking whether the inlet sensor 36 has been turned off will be described with reference to the flowchart of FIG. This process is a process for checking whether the recording paper has passed through the entrance sensor 36 after the entrance sensor 36 is turned on. In this process, first, the entrance sensor 36
Is turned off (step S21), and if it is off, it is further checked in step S22 whether the punch mode is set. In this check, if the mode is the punch mode, "1" is set to the punch job counter (PUNCJC) (step S23), and if not, the process returns. On the other hand, if the entrance sensor 36 is not off, it is checked in step S24 whether the TIM1CU has exceeded 200 and has increased. TIM1CU is 20
If it is larger than 0, it is determined in step S25
Call the jam subroutine. Accordingly, a jam signal is transmitted from the sheet processing apparatus to the image forming apparatus, and it is recognized that the sheet processing apparatus has been jammed. TI
When M1CU is 200 or less, the process returns.

1.3.3.8 Processing Procedure of Punch Processing Next, the punch processing will be described with reference to FIGS. 17 to 22. 17 is a flowchart for explaining the setting of the job counter of the punching process, FIG. 18 is a flowchart when the job counter is 0, FIG. 19 is a flowchart when the job counter is 1, and FIG. 21 is a flowchart when the job counter is 3, and FIG. 22 is a flowchart when the job counter is 4.

The job counter (PUNCJC) is shown in FIG.
Are set from 0 to 4, as shown in FIG. 18, and the routine returns when the job counter is 0, as shown in FIG. When the job counter is 1, as shown in the flowchart of FIG. 19, first, it is checked whether or not the punch flag 1 (punch F1) is set, that is, whether or not the punch flag 1 is set to "1" (step S31). . If the punch flag 1 (punch F1) is set, it is checked whether or not the punch timer T1 (punch T1) is larger than 10 (step S32). If it is larger than 10, the punch flag 1 (punch F1) is set. Reset, that is, "0" (step S33). And the punch motor 101
Is turned on, 2 is set in PUNCJC, and the punch timer T1 (punch T1) is reset (step S3).
4).

On the other hand, in step S31, the punch flag 1
If (punch F1) is not set, it is checked whether the punch flag 2 (punch F2) is set to "1" or not (step S35). If it is set, the punch timer T1 (punch F2) is set. It is checked whether T1) is greater than 80 (step S36). If the punch timer T1 (punch T1) is larger than 80, the process of step S34 is performed.

On the other hand, if the punch flag 2 (punch F2) is not set in step S35, it is checked whether the punch timer T1 (punch T1) is larger than 15 (step S37). The process of step S34 is performed. If the value is 80 or less in step S36, or if the punch timer T1 (punch T1) is determined in step S37.
Is 15 or less.

When the job counter is 2, as shown in the flowchart of FIG.
It is checked whether or not (punch T1) is larger than 20 (step S41). If it is larger, the punch home position sensor (punch HP not shown)
Check whether the sensor has been turned off (step S4).
2). If the punch home position sensor (punch HP sensor) is off, then in step 43 the PUNCJ
Set 3 to C and return. On the other hand, if the punch home position sensor (punch HP sensor) is not turned off, a jam subroutine is called (step S).
44) Return.

When the job counter is 3, as shown in the flow chart of FIG. 21, first, it is checked whether or not a punch home position sensor (punch HP sensor) not shown is on (step S51). If the punch home position sensor (punch HP sensor) is on, the punch motor 101 is turned off, "0" is set in PUNCJC (step S52), and the punch flag 2 in the punch mode for punching a punch hole 110 at the center is set.
It is checked whether (punch F2) is set (step S53). Punch flag 2 (punch F2)
Is set, punch flag 2 (punch F2)
And the punch timer T1 (punch T1) is reset,
PUNCJC is set to 4 (step S54).

On the other hand, if the punch home position sensor (punch HP sensor) is off at the check in step S51, it is checked whether the punch timer T1 (punch T1) is greater than 250 (step S55), and the punch timer T1 (punch T1) is checked. If the punch T1) is larger than 250, a jam subroutine is called (step S56). As a result, a jam signal is transmitted from the sheet processing apparatus M to the image forming apparatus 81, and it is recognized that the sheet processing apparatus M has been jammed. Punch timer T1 (punch T1) is 25
When the value is 0 or less, the routine returns.

When the job counter is 4, as shown in the flowchart of FIG.
It is checked whether (punch T1) is greater than 5 (step S61), and the punch timer T1 (punch T1) is set to 5
If it is larger, the process jumps to step S34 in FIG. 19, and returns if the punch timer T1 (punch T1) is 5 or less.

Note that the copy mode is set to one normal document.
When the mode is switched to the normal copy mode for copying on a sheet of recording paper and the punch processing mode is set, the mode is switched to the punch mode in which punching is performed on one end face of the recording paper P as shown in FIG. As a result, when performing the punching process in the above-described punching mode when copying in the normal copy mode, holes are opened on both sides of the recording paper P, and a problem occurs when filing is performed, and copying is performed again. However, by switching to the punch processing mode as shown in FIG. 23, re-copying can be avoided, and waste of recording paper can be eliminated.

Next, the recording paper conveyance direction and the state of the image recorded on the recording paper are checked to prevent unnecessary punching, thereby eliminating waste of recording paper and performing punching that cannot be filed. An example in which there is no such a case will be described with reference to FIGS. FIG. 24 shows a recording sheet fed in the longitudinal direction, FIG. 25 shows a recording sheet fed in the short direction, and FIG. 26 shows a case where the punch mode is selected according to the conveying direction of the recording sheet and the contents of the duplex copying mode. It is a processing flowchart.

The conveying direction (the direction of the arrow) of the recording paper P is as shown in FIG.
In the longitudinal direction (vertical direction) as shown in FIG. 4, when the copy mode is one-sided copying, punch processing is performed at two positions, the leading end and the rear end. The punching process is performed. As shown in FIG. 25, when the recording paper P in the short direction is selected from the recording papers in the image forming apparatus 81 and copying is performed, it is necessary to perform two punching processes. Prohibition. That is, when two images are copied on the same surface on the recording paper P in the short direction as shown in FIG. 25, the two images are formed vertically (vertically) in the figure. In such a case, if the recording paper P is cut from the center by punching a punch hole 110 at the front and rear ends or the center of the recording paper P, it will be elongated vertically and the image will be divided into front and back. Therefore, in such a case, useless punch processing is prevented from being performed by prohibiting the two punch modes. In addition, even when the double-sided mode is performed, even when one of the front side and the back side is formed with one image, the two punch modes are prohibited by prohibiting the punching mode.
Avoid unnecessary punching.

1.3.3.9 Selection of Punch Mode and Combination with Other Modes Hereinafter, the processing in the case of selecting the punch mode according to the recording paper conveyance direction and the contents of the duplex copying mode will be described with reference to FIG.
This will be described with reference to the flowchart of FIG. In this process, first, it is checked whether or not the mode is the punch mode (step S71), and if not, the process returns. In the case of the punch mode, it is checked whether or not the copy mode is a mode for copying a plurality of images on one sheet of recording paper (step S72). Move to This processing is omitted because it is a normal one-side punch mode. If it is determined in step S72 that the mode is a mode in which a plurality of images are to be copied, it is checked whether or not a two-point prohibition flag (two-point prohibition F) is set (step S7).
3). When the two places prohibition flag (two places prohibition F) is set, the routine returns.

If it is determined in step S73 that the two places prohibition flag (two places prohibition F) is not set, it is checked whether the recording paper P is in the longitudinal direction shown in FIG. 24 (step S74). In the case of the longitudinal direction, it is checked whether or not the copy mode is the duplex mode (step S75).
It is checked whether or not KF) is set (step S76). Center punch OK flag (Center punch OK
If F) is set, the subroutine for center punch is called (step S77), and the routine returns. As a result, a signal in the center punch mode is transmitted to the sheet processing apparatus M side, and two punching processes are performed at the center of the recording sheet P.

If it is determined in step S76 that the center punch OK flag (center punch OKF) has not been set, the two-point prohibition flag (two-point prohibition F) is set (step S78). (S79), a reset signal for punching two places is transmitted to the sheet processing apparatus M, and the punch processing is not performed. Is displayed (step S80).

On the other hand, if the mode is not the double-sided mode in step S75, it is checked whether the leading end trailing end punch OK flag (leading end trailing punch OKF) is set to "1" (step S81), and the leading end trailing end punch is checked. If the OK flag (front end trailing end punch OK F) is set to "1", the front end trailing end punch subroutine is called (step S).
82). As a result, a signal in the leading-end trailing-end punch mode is transmitted to the sheet processing apparatus M, and punching processing is performed on two portions of the leading end and the trailing end of the recording sheet P.

In step S81, it is determined that the leading end trailing end punch OK flag (leading end trailing end punch OKF) is not set, and in step S74, it is determined that the recording sheet is not in the longitudinal direction shown in FIG. Sets a two-point prohibition flag (two-point prohibition F) (step S83) and calls a subroutine for prohibiting two-point punching (step 84). As a result, the reset signal of the two punches is transmitted to the sheet processing apparatus M, and the punch processing is not performed. Then, the display subroutine is called to display that the punching process is prohibited (step S85).

The center punch OK flag (center punch OKF) is set by another subroutine not shown. This flag is set when the image is not chipped even when the center portion of the recording sheet P is punched, or when the image is not difficult to see even if it is folded in two (one of the front and back sides is formed by one image. This flag is not set even if Also, the leading end trailing end punch OK flag (leading end trailing end punch OKF) is set in another subroutine not shown. If only one image has been formed on the recording paper, this flag is not set.

Next, when the stapling process is further performed after the above-described punching process is performed, there is a case where the meaning of the punching process becomes meaningless in the filing process. Therefore, when the punching process is performed as described above, it is desired that the stapling process is not performed. That is, as shown in FIGS. 10 and 12, when punching is performed on the front and rear ends in the longitudinal direction of the recording paper P, or two places at the center, when filing is actually performed even when staple binding is performed, There is no point in performing staple folding to fold in half, and the staple needle is wasted. Therefore, when the punching process is selected, the stapling process is not performed, so that the waste of the recording paper and the waste of the stapling needle are eliminated. This processing will be described with reference to the flowchart in FIG.

When the start signal is sent from the image forming apparatus 81, the sheet processing apparatus M starts preparing to accept the recording paper discharged from the image forming apparatus 81. First, the start signal is set. It is checked whether or not the activation signal is present (step S91). If the activation signal is not "1", the routine returns. If the start signal has been set, the start flag (STARTF) is checked (step S9).
2) If the start flag (STARTF) is set, that is, if the start flag is "1", the process returns. If the start flag (STARTF) is not "1", the paper discharge signal is checked (step S93). The start flag (STARTF) is reset by another subroutine (not shown) at the timing when the next recording sheet can be received.

The paper discharge signal is a signal transmitted from the image forming apparatus 81. When the paper discharge signal is "1", the recording paper is discharged from the image forming apparatus 81. Therefore, it is checked in step S93 whether the signal is a paper discharge signal. If the paper discharge signal is not "1", the process returns. If the paper discharge signal is "1", it is checked whether the apparatus is in the stapling mode (step S94). ). If this check is in stipple mode,
In the next step S95, it is checked whether or not the two-point punch mode is set. If the check is not in the two-punch mode, the inconvenience as described above does not occur, so the subroutine of the staple mode is called (step S96). Thus, the recording paper discharged from the image forming apparatus 81 is discharged to the staple tray 21. After calling the staple mode subroutine in step S96, the start flag (STARTF) is set to "1" (step S97).

On the other hand, if the two-punch mode is selected in step S95, the staple mode is also selected. In this case, the staple mode is prohibited and the mode is switched to the shift mode. Is displayed (step S98). This can eliminate the confusingness of the copying operation. In response to step S98, the subroutine of the shift mode is called (step S99), and the recording paper discharged from the image forming apparatus 81 and punched by the punch unit A is discharged to the discharge tray 1.
Discharge to 2. After calling the shift mode subroutine, the start flag (STARTF) is set to "1" (step S100).

In this way, when the punching process is selected, the stapling process can be prevented from being performed in advance, or the stapling process can be prevented from being performed by switching the transport path. At this time, it is possible to display that the transport path has been switched.

FIG. 28 is a view showing a state in which a punching process is performed on the leading end and the trailing end of the recording paper P to make a punched hole 110, and a stapling process is further performed on the central portion to be stapled 120. FIG. 30 is a diagram showing a state in which a punching process and a stapling process are performed on a central portion of the recording paper P to form a punched hole 110 and a stapling process is performed. FIG. It is a figure which shows the state which performed. In this case, the stapling process can be executed by selecting from three types of positions, that is, two central positions and one of the end positions, and the respective staple positions 121, 122, and 123 are as shown in the figure. . In this embodiment, when a mode in which punching is performed on the leading edge and the rear edge of the recording paper P or a punching mode in which staple processing is performed on the center is selected, the staple mode is changed to a mode in which staple processing is performed on the center. When the mode in which the punching process is performed on the edge of the recording paper P is selected, the mode is switched to the mode in which the stapling process is performed on the edge of the recording paper.

Since there are three types of modes for performing staples at the edges, the operation screen is switched so that the staple mode can be selected from the three types at the edges, so that the mode for staples at the center cannot be selected. Also, as shown in FIG. 30, when the mode in which the punching process is performed on the edge of the recording paper P is selected, and the stapling mode is selected, the stapling process is also performed on the edge of the recording paper P, as shown in FIG. When the mode is switched to the punch mode for punching the leading and trailing ends of the recording paper P or the punch mode for punching the center of the recording paper P as shown in FIG. Mode for stippling in the center,
That is, the mode is switched to a mode as shown in FIGS.

As shown in FIG. 28, when the punch mode in which the leading edge and the trailing edge of the recording paper P are punched and the stapling mode in which the central portion is stapled are selected,
As shown in FIG. 29, when the punch mode for punching at the center of the recording paper P and the staple mode for staple at the center are selected, the mode for staple at the end of the recording paper P shown in FIG. When the mode is switched, the punch mode is switched to a mode for performing a punching process on the edge of the recording paper P.

When the punch mode is changed or the staple mode is changed in the mode already set as described above, the punch mode or the staple mode is changed. In the mode of punching the leading edge and the trailing edge or the mode of punching the central portion of the recording paper P in FIG. 12, there is no possibility that a problem that the end portion of the recording paper P is stapled will occur. Further, in the mode in which the edge of the recording sheet P is punched as shown in FIG. 30, there is no possibility that a problem that the stapling process is performed on the central portion of the recording sheet P occurs.

FIG. 31 is a perspective view of a sheet processing apparatus showing a portion where staple processing is performed at the center of the recording paper P as shown in FIGS. 28 and 29. It is a stippler.

FIG. 32 is a flowchart showing a processing procedure for checking a combination when the staple mode and the punch mode are selected. More specifically, in the end stipple mode, when a mode for punching a punch hole 110 in the center is selected in the punch mode, or when the mode is the center stipple mode, a hole is punched in the end in the punch mode. This is a subroutine for checking the combination of the staple mode and the punch mode when the mode for performing the selection is selected.

In this subroutine, first, it is checked whether or not the activation flag is set, that is, whether or not the activation flag is "1" (step S11).
1). If the activation flag has been set, it is checked in step S112 whether or not the apparatus is in the stapling mode. If the activation flag has not been set, the routine returns. The activation flag (activation F) is generated by replacing an activation signal inside the sheet processing apparatus M. That is,
A start signal is transmitted from the image forming apparatus 81 to the sheet processing apparatus M, and when the sheet processing apparatus M receives the transmitted start signal, the start signal is internally replaced with a start flag.

If the mode is the stapling mode in step S112, it is further checked whether or not the mode is the punch mode in step S113. If not, the process returns. If it is the punch mode in step S113, it is further checked in step S114 whether or not it is in the edge binding mode. If not in step S113, the process returns. The edge binding mode determined in step S114 is a mode in which staple processing is performed at the edge of the recording paper P as shown in FIG. If it is determined that the mode is the edge binding mode, it is checked in step S115 whether the mode is the edge punch mode. If the mode is the edge binding mode, the process returns. This is because if the binding mode is edge mode and punch punching is also in edge punch mode,
This is because there is no problem in combining the two.

On the other hand, if the check in step S115 is not the end punch mode, that is, if the center punch (FIG. 29) or the leading or trailing punch mode (FIG. 28) is selected, steps S116 and S117 are performed. Execute the processing of That is, when the center punch mode or the leading and trailing punch modes are selected in the edge binding mode, the combination of modes does not match the image forming apparatus 81, so a subroutine for sending a signal from the sheet processing apparatus M is called ( Step S11
6). Accordingly, the image forming apparatus 81 recognizes that the stapling position in the staple mode does not match the punch position in the punch mode. Thus, in step S117, a subroutine for preventing the processing from proceeding in the sheet processing apparatus M is called.

If it is determined in step S114 that the mode is not the edge binding mode, it is checked in step S118 whether the mode is the punch mode of the center or the front and rear ends.
In this check, if the mode is the punch mode of the center portion or the front end and the rear end, there is no problem in the combination, and the process returns without doing anything. On the other hand, if the punch mode is not the center or front end and rear end punch modes, in other words, if the end punch mode is selected, the processing of steps S119 and S120 is further executed. That is, if the edge punch mode is selected in the center binding mode, the combination of modes does not match the image forming apparatus 81, and thus a subroutine for sending a signal from the sheet processing apparatus M is called (step S119). Accordingly, the image forming apparatus 81 recognizes that the stapling position in the staple mode does not match the punch position in the punch mode. Therefore, step S
At 120, a subroutine for preventing the processing from proceeding in the paper processing apparatus M is called.

2. Second Embodiment Hereinafter, a second embodiment will be described. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

2.1 Mechanical Configuration of Sheet Processing Apparatus FIG. 33 is a diagram showing a schematic configuration of a sheet post-processing apparatus M according to the second embodiment. In the figure, an entrance sensor 36 for detecting the entrance of recording paper, an entrance roller 1 for carrying recording paper inside, and filing for recording paper are provided at the entrance of the paper discharge conveyance path from the image forming apparatus (copier) 81. Punching device A composed of a rotary punch or the like for punching holes for use
And two branch claws 8a, 8 for switching the conveyance path so as to convey the perforated recording paper in one of three directions.
b is provided. By the branching claws 8a and 8b, recording paper going to the discharge tray 12 also called a shift tray, recording paper going to the stapling device 11, and recording paper going to the proof tray 14 are separated.

In the transport path in the direction of the paper discharge tray 12, an upper transport roller 2b for transporting the recording paper from the branch claw 8b to the paper discharge tray 12, and the recording paper transported by the upper transport roller 2b is detected. Paper discharge sensor 38, paper discharge roller 3 for discharging recording paper to paper discharge tray 12, paper discharge tray 12
A paper feed lever 1 for detecting recording paper on a paper discharge tray 12;
3, and paper surface sensors 32 and 33 for detecting the position of the paper surface lever 13 are arranged. Output tray 12
Is moved up, down, left and right as appropriate by a tray elevating motor (vertical motor) 51 (FIG. 7) and a shift motor 52 (FIG. 7).

When the recording paper is fed to the proof tray 14, the conveying path to the proof tray 14 is released by switching the tip of the branch claw 8a downward in the drawing. Thus, the recording paper introduced into the conveyance path by the conveyance roller 2a is sent to the proof tray 14 side.
In addition, a branch claw 2 is provided on the conveyance path in the direction of the stapling apparatus 11.
b, a conveying roller 2 c for conveying the recording paper from the stapling apparatus 11 to the stapling apparatus 11, a lower conveying roller 4,
Sensor 3 for detecting the recording paper conveyed by the
7, a paper feed roller 6 composed of a brush roller and the like are arranged. The lower transport roller 4 includes a transport motor 54
(FIG. 9). In this embodiment, the recording paper is fed into the conveyance path D functioning as a stack tray by the branching claw 8c, and the leading edge of the recording paper is aligned by the registration roller 16, and a predetermined number of recording papers, for example, two recording papers are collectively stapled. It can be sent to the 11 side. The stapling apparatus 11 is provided below the staple tray as in the case of FIG. 1, and the staple tray is provided with a jogger fence 9, a return roller 5, and a stapling position behind the jogger fence 9 for aligning the recording paper. Discharge belts 10 for discharging the recording paper bundle are arranged respectively.

With such a configuration, the punching device (hereinafter referred to as “the piercing device”) can be used in any of the proof mode, the shift mode, and the staple mode for discharging the recording paper to the proof tray 14, the discharge tray 12, and the staple tray. A punching operation (punch operation) can be performed by the punch unit 15. In addition, the first
2, the jogger fence 9 is driven by the jogger motor 26 as shown in FIG.
, And the return roller 5 is supported by a hitting solenoid 30 so as to be capable of pendulum movement. As shown in FIG. 3, a rear end fence 19 is provided below the jogger fence 9 for abutting the recording paper side. As shown in FIG. 4, the stapling apparatus 11 is driven by a stapler moving motor 27 via a staple belt 50 and moves sideways. On the other hand, the discharge belt 10 is driven by a discharge motor 57 as shown in FIG. In the vicinity of the discharge belt 10, a discharge belt home sensor 39 for detecting that the discharge belt 10 is located at the home position is provided. The sheet ejection sensor 37 detects the rear end of the recording sheet and immediately issues an ON command to the return roller 5 to operate the return roller 5 so that the return roller 5 can strike the rear end of the recording sheet. Are located in

As shown in FIG. 7, the discharge tray 12 is suspended by a pair of upper and lower lift belts 48. The upper and lower lift belts 48 are driven by a tray lifting motor 51 via a gear train and a timing belt. And rises or falls by the forward or reverse rotation of the tray elevating motor 51. The home position (HP) of the discharge tray 12 and the height at the time of movement are detected by a lever 13 rotatable in the vertical direction and paper surface sensors 32 and 33, and when the discharge tray 12 is full of recording paper, the lower limit is reached. It is detected by the sensor 34. Further, if the shifting roller 7 is pushed up by the paper discharge tray 12 when the paper discharge tray 12 is raised, the upper limit switch 31 is turned off, the rotation of the tray lifting motor 51 is stopped, and the paper discharge tray 12 is damaged by overrun. Has been prevented.

2.2 Punch Unit The punch unit 15 according to this embodiment is of a rotary punch type, in which a punch and a die are incorporated in a pair of rollers, and the punch and the dies are rotated by rotating the pair of rollers. And punch a punch hole at a predetermined position on the recording paper. The punching timing is set at a timing after a predetermined timing from the detection of the rear end of the recording paper by the entrance sensor 36 provided at the entrance of the paper processing apparatus M.

On the other hand, as described above, there is also an example in which a so-called weekly magazine (for saddle stitching) is copied by digitally processing an image scanned by digitization of a recent image forming apparatus, reading the image into a memory, and editing the image. It has increased. However, in the saddle stitching copy, since a binding bundle is created by bending from the center of the recording paper in a direction orthogonal to the transport direction, when holes are made in the copied recording paper, symmetrical punching is performed on both sides of the center of the recording paper. A hole must be drilled. Therefore, in the case where the punch 102 and the die 103 as shown in FIG. 8 are provided only in one row in a direction orthogonal to the recording paper conveyance direction, the punch 102 is formed after the first punch hole is made.
And the die 103 are further rotated once to make a second punch hole. According to this control, the recording sheet discharged from the high-productivity image forming apparatus having a high conveying linear speed is provided with a first punch hole, and is further rotated by one rotation to form a second punch hole. I can't afford time until the day is over. For this reason, there have been problems that stable drilling quality cannot be maintained, and that the conveying linear speed is reduced in order to maintain the quality, thereby sacrificing productivity.

Therefore, in the present invention, the same roller 15a is used.
A first punch 102a and a second punch 102b are provided on (hereinafter, referred to as a "first roller"), and on another identical roller 15b (hereinafter, referred to as a "second roller"). A first die 103a and a second die 103b are provided at positions corresponding to the first and second punches 102a and 102b.
The punch side (first roller 15a) rotates clockwise in the figure, and the die side (second roller 15b) rotates counterclockwise in the figure, and the punch side (first roller 15a) Is the first die 103a and the second die 103a
The second die 103b meshes with each of the punches 102b, and punches holes in the recording paper passing through the conveyance path 17. In addition, these rollers 1
In the axial direction of 5a, 15b, that is, in the direction perpendicular to the recording paper conveyance direction B, the first and second punches 102 for punching a punch hole at intervals of filing hardware.
a, 102b and first and second dies 103a, 103a,
03b are provided respectively. That is, two punches and two dies are provided in a line, and two holes can be simultaneously formed.

2.2.1 Punching Operation FIGS. 35 and 36 are explanatory diagrams showing the operation when punching holes in the recording paper P. The upper part of the drawing shows the relationship between the punch and the die of the punch unit A. , The lower side shows the state of the recording paper P in a corresponding manner. Image forming apparatus 81
When the first row of punch holes is made in the recording paper conveyed from the recording paper P, the rotation of both the first punch 102a and the first die 103a causes a predetermined position closer to the leading end side of the recording paper P than the center line C in the conveyance direction B. Punch hole 106a at a position L1 away
Is perforated. At the time of punching, the transport linear velocity of the recording paper P and the rotational linear velocity of the first punch 102a and the first die 103a are the same. After the first punched holes (first-row punched holes) 106a are thus drilled, the second punched-holes (second-row punched holes) 106b are formed as shown in FIG. That is, the second row of punched holes 106b is drilled at a position separated from the center line C of the recording paper P by a predetermined distance L1 on the rear end side in the transport direction B, so that the first row of punched holes 106a is drilled. The paper P is transported as it is, and in parallel with this, the first roller 15 having the punches 102a and 102b is provided.
roller 1 provided with a and dies 103a and 103b
5b also rotates, and the second row of punched holes 106b is punched at the position. In this manner, the punched hole 106a is located at a position separated from the center line C by a predetermined distance L1 toward the front end and the rear end in the transport direction.
And 106b are perforated, so that when the recording paper P is folded from the center line C, the punch holes 106a and 106b coincide. In this embodiment, the first punch 102a and the second punch 102b and the first die 103a and the second die 103b are respectively provided at positions shifted by 90 degrees, and the first punch hole 106a is formed. After that, it is set to rotate 90 degrees to open the second punch hole 106b. The punching position is determined by the entrance sensor 36 on the recording paper P.
Is set in accordance with the lapse of time (pulse count result) from the detection of the leading edge of. First and second punch 1
The angle between 02a and 102b is appropriately set in accordance with the relationship between the set linear velocity of the recording paper P and the rotational linear velocity of the rollers 15a and 15b.

In general, the punch hole 10
6a and 106b are opened, but the transport linear speed of the paper processing apparatus also varies depending on the productivity of the image forming apparatus, in other words, the linear velocity of the paper discharge. After opening at the same rotational linear velocity, the rotational linear velocity of the rollers 15a and 15b is adjusted by increasing or decreasing the rotational velocity, and the punch holes 106b in the second row are adjusted to the linear velocity of the recording paper P by the punch 102b and the die 103b. It is necessary to pierce the recording paper P at a position L away from the center C at the same rotational linear velocity as described above. Also, when punching the first and second rows of punched holes 106a and 106b, it may be necessary to adjust the rotational linear velocity of the first roller 15a on the punch side and the second roller 15b on the die side. For example, when the positions of the punch holes are changed by operating the operation unit on the image forming side even in the same image forming apparatus, the positions of the punch holes 106a in the first row and the punch holes 106b in the second row in the transport direction B are different. This is because the distance is different.

On the other hand, in the case of normal single binding, as shown in FIG. 37, a two-hole, one-row punch hole 106c is located at a predetermined distance L2 from the end of the recording paper P toward the leading end in the transport direction B.
Dawn. In this case, the first punch 102a and the first
With the die 103a. As described above, the punching is performed when a predetermined time set by the punching position has elapsed after the trailing edge of the recording sheet P is detected by the entrance sensor 36 (when the counting of the predetermined pulse ends). . Thereafter, the second punch 102b and the second die 103b are blanked between the next recording paper P, stop at a predetermined position, and wait for punching of the next recording paper P.

For stopping the predetermined position, a punch home position sensor 107 is provided on the first roller 15a on the punch side as shown in FIG.
As shown in FIG. 9, the CPU 70 controls the motor driver 1 in accordance with the output from the punch home position sensor 107.
08, the punch motor 101 is controlled to control stopping at a predetermined position and driving at a predetermined timing.

2.2.2 Operation Procedure of Punching Operation The operation procedure of this embodiment will be described with reference to the flowchart of FIG.

In this processing, first, it is checked whether or not the punching operation is selected ((Step S20)
1). The selection of the punch operation is performed from the operation unit of the image forming apparatus 81. If the punch operation has not been selected in this check, the routine returns and exits from this routine. On the other hand, if the punching operation is selected in step S201, it is checked whether or not there are a plurality of perforations on the recording paper P (step S202). If there is more than one hole, the place where the hole is to be drilled is recognized (step S203), and it is confirmed whether or not speed adjustment is necessary between the hole in the first row and the hole in the second row (step S204). If there is no need for speed adjustment,
The punching operation is started as it is to perform drilling (step S205), and if speed adjustment is necessary, first, the drilling operation of the first row is started (step S206), and the drilling of the first row is completed. (Step S207), the rotational linear speeds of the punch and the die are adjusted, and the second row drilling operation is started (Step S208), and the process returns.

If it is determined in step S202 that there are not a plurality of holes to be drilled, a place to be drilled is recognized (step S209), and a drilling operation is started (step S21).
0), return.

By operating as described above, it is possible to reliably and accurately punch a hole at a position corresponding to the input position of the punching position from the image forming apparatus 81, and to form two rows for saddle stitching. When the punched holes are formed, the holes coincide with each other when the recording paper P is bent from the center, and good filing can be performed.

2.2.3 Setting of Perforation Position According to Thickness of Recording Paper One job is composed of a plurality of recording papers P, and which recording is performed when the recording papers P in one job are saddle-stitched. As described above, if two rows of holes are made in the same position on the paper P, filing may not be performed well. More specifically, as shown in FIG. 41, for example, saddle stitching is performed on recording paper P, which is composed of four sheets, and the recording paper P is folded in half from the center and bound as shown in FIG. In such a case, inconvenience may occur. That is,
As shown in FIG. 35 and FIG. 36 described above, a process of punching a punch hole at the same distance L1 from the center with respect to the recording paper P is performed on all the recording papers P in the same manner. When the recording paper P is saddle-stitched as shown in FIG. 42, the punched holes 106a,
6b, punch holes 106a, 106
The recording paper is shifted to the end side of the recording paper (in the direction of arrow F) from b. This shift becomes more conspicuous as the number of sheets bound increases. This shift is due to the thickness of the recording paper P, and such a shift causes inconveniences such as difficulty in inserting a filing rod into the punch holes 106a and 106b when filing. Further, even after the filing is performed by inserting the filing rod, the center side of the recording paper P is shifted and overlapped, so that there is a problem that the filing during the filing is poor.

Therefore, when the thickness of the recording paper P becomes a problem, the interval between the punch holes 106a and 106b formed on the first to fourth recording papers P is changed from the first to the fourth. As you get to the eye, gradually increase as LA <LB <LC <LD. In this case, the degree of increase for each sheet is set in consideration of the thickness of the recording paper P. Therefore, punch holes 106a, 106
In the step of punching b, the punch holes 106a and 106b that are gradually punched are shifted outward from the center C of the recording sheet P by an amount corresponding to the thickness of the recording sheet P. Thus, the punch holes 106a, 106
When the recording paper P is bent from the center line C as shown in FIG. 44 by increasing the distances LA, LB, LC, and LD of b, punch holes formed in each of the four recording papers P as shown in FIG. The filing rods 106a and 106b are overlapped and aligned without any displacement, and the filing rod can be inserted smoothly.

In order to shift in this manner, the movable timing of the first punch 102a and the first die 103a is gradually advanced from the first recording sheet P to the fourth recording sheet P. First, the punch holes 106a in the first row are moved closer to the leading end side in the transport direction B of the recording paper P as the first to fourth punch holes 106a are turned. On the other hand, the first row of punched holes 106
a, the speed is adjusted and the second punch 102
b and the punching timing by the second die 103b is gradually delayed, and the punch holes 106b in the second row are moved closer to the rear end side in the recording paper conveyance direction B. By performing the punching operation under such control, the punch holes 106a and 106b in the first and second rows as shown in FIG. 43 can be punched.

Here, the driving timing of the first and second rollers 15a and 15b having punches and dies is controlled to control the punching positions of the punch holes 106a and 106b. The punching position of the punched holes 106a and 106b can be controlled by controlling the transport speed of the recording paper P by using
Needless to say, the punching positions of the punch holes 106a and 106b can be controlled by combining the speed control of the transport motors 5a and 15b and the transport motor 54.

Although the adjustment of the shift amount according to the thickness of the recording paper P has been described above, the shift amount must be larger for thick paper than for thin paper. In other words, in the case of thick paper, LA and LB, LB and LC, LC
And the distance between LD and LD must be larger than in the case of thin paper. Therefore, it is necessary to determine the thickness of the recording paper P. Here, the data input from the operation unit of the image forming apparatus 81 is transferred to the CPU 70 of the paper processing apparatus M, and the determination is performed. In this case, the determination result may be transmitted from the image forming apparatus 81 side, or the input processing may be simply transmitted to the sheet processing apparatus M and the determination processing may be performed on the sheet processing apparatus M side. The shift amount is set in advance according to the thickness of the recording paper P and stored in the ROM 71. When the thickness of the recording paper P is known, the shift amount corresponding to the thickness is read from the ROM 71 and an appropriate amount is read. Set the shift amount. The processing procedure at this time is shown in FIG.

That is, first, it is checked whether or not the punching operation is selected (step S301). If the punching operation is not selected, the process directly returns to exit from this routine. It is checked whether P is thin paper (step S3).
02). If this check determines that the paper is thin,
The control of the operation for thin paper is started (step S303), a punch hole is formed by shifting the set amount of thin paper, and if it is determined that the paper is thick, the control of the operation for thick paper is started ((step S304) A punch hole is made by shifting the shift amount set in step 2, and the process returns.

Although only two types, that is, thin paper and thick paper are illustrated here, when setting the thickness of three or more recording papers, operation control according to the thickness may not be performed. Needless to say.

[0127]

According to the first aspect of the present invention, in the mode of copying a plurality of originals onto one sheet of recording paper in the one-sided copy mode, punch processing is performed on the leading edge and the trailing edge of the recording sheet. Therefore, holes can be formed in places where filing is easy, so that the entire operation time from punching to filing can be shortened, and productivity of post-processing of recording paper can be improved.

According to the second aspect of the present invention, in a mode in which a plurality of originals are copied on one sheet of recording paper, a plurality of punching processes are performed on the central portion of the recording paper, so that filing is easy. Since the holes can be formed, the entire operation time from punching to filing can be shortened, and the productivity of post-processing of recording paper can be improved.

According to the third aspect of the present invention, when the copy mode is switched to the normal mode in which one document is copied onto one recording sheet, the punch mode for performing the punching process on one end face of the recording sheet. If the punching holes are clear at both ends of the recording paper, filing will not cause a problem and re-copying will not be performed. This saves copying work and waste of recording paper. .

According to the fourth aspect of the present invention, when a plurality of originals are copied on one sheet of recording paper, the punching operation is not performed if copying is not possible on one sheet of recording paper. In this way, if the punched hole is clear, filing will not cause a problem when filing, and copying will not be performed again. This saves copying work and waste of recording paper.

According to the fifth aspect of the present invention, the conveyance direction of the recording paper is checked to eliminate the useless punching process, so that the punching process that cannot be filing is not performed, so that the copying work and the recording paper are reduced. Waste can be eliminated.

According to the sixth aspect of the present invention, the state of the image formed on the recording paper is checked to eliminate the useless punching process. Time and waste of recording paper can be saved.

According to the seventh aspect of the present invention, when the punching mode is selected, the stapling process is prohibited, so that the waste of the recording paper and the waste of the stapling needle can be eliminated.

According to the eighth aspect of the present invention, by displaying that the punch mode or the staple mode is prohibited, it is possible to prompt the user to perform subsequent operations.
Usability is improved.

According to the ninth aspect of the present invention, when the punching mode is selected, even if the staple mode is selected, the recording paper is not conveyed to the stapling apparatus. Waste can be eliminated, and the efficiency of copy processing can be improved.

According to the tenth aspect of the present invention, the mode in which the stapling is performed at the center is switched to the mode in which the stapling is performed at the end according to the selected punching mode, so that there is no mistake in the stapling process.

According to the eleventh aspect of the present invention, when the mode in which the end portion of the bundle of recording sheets is stapled in the mode in which the leading end and the trailing end of the recording sheet are punched is selected, the central portion of the recording sheet is selected. When the mode is changed to the one in which a plurality of punching processes are performed, the mode is switched to the mode in which the stapling process is performed at the central portion of the recording paper bundle, so that the stipple processing error is eliminated.

According to the twelfth aspect of the present invention, when the mode for performing staple processing on the central portion of the recording bundle is selected in the mode for performing a plurality of punching processes on the central portion of the recording paper, the leading edge and the trailing edge of the recording paper are selected. When the mode is changed to the punching mode, the mode is switched to the stapling mode at the end of the bundle of recording sheets, so that there is no mistake in the stapling process.

According to the thirteenth aspect, when the staple mode is changed while the punch mode and the staple mode corresponding to the punch mode are selected, the punch mode is set according to the staple mode. , The mistake in the stapling process is eliminated.

According to the fourteenth aspect of the present invention, the fact that the mode has been changed is displayed, so that a work error can be suppressed.

According to the fifteenth aspect of the present invention, since the punch unit has a plurality of rows of perforated portions arranged in a direction perpendicular to the recording paper transport direction, a plurality of rows of punches are provided in the recording paper transport direction. In the case of drilling holes, the punch unit may be driven to the next punching section, and it is possible to efficiently punch holes.

According to the sixteenth aspect of the present invention, a plurality of rows of perforated portions are provided in the first and second rows, and the first perforated portion is formed on the conveyed recording paper by the first perforated portion. Thereafter, since the second perforation is performed in the second perforation section, the punch hole can be efficiently perforated when performing the second perforation.

According to the seventeenth aspect, after the first perforation is performed in the first perforation section by the speed control means, the second perforation is performed.
Since the feed speed and / or the transport speed of the recording paper for performing the perforation are changed while the second perforation is performed in the second perforation, the perforation position of the second perforation can be adjusted.

According to the eighteenth aspect of the present invention, the change of the speed by the speed control means is such that when the recording paper is bent at the center after the perforation, the punched hole formed by the second perforation is formed by the first perforation. Since the speed is set to match the punched hole, it is possible to obtain a punched hole shape and a punched hole position with stable quality.
Punch holes in a row can be reliably and accurately overlapped.

According to the nineteenth aspect of the present invention, when the recording paper is pierced in the vicinity of the end, the piercing is performed at the first piercing portion. Can be punched.

According to the twentieth aspect of the present invention, the puncturing timing for each row of the piercing section provided with a plurality of rows is set,
Since the punching timing is set to a different value in one job, it is possible to prevent a shift of a punch hole when a plurality of recording papers are filed by saddle stitching.

According to the twenty-first aspect of the present invention, the punching timing is set to different values according to the thickness of the recording paper, so that the displacement of the punch holes when performing the saddle stitching of a plurality of thin papers or thick papers is prevented. be able to.

According to the twenty-second aspect, the feed speed of the perforated portion and / or the transport speed of the recording paper are changed according to the set perforation timing. This can be achieved by controlling not only the drive speed of the unit but also the transport speed of the recording paper, and the degree of freedom in control can be increased.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an entire sheet processing apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a driving mechanism of a jogger fence and a return roller.

FIG. 3 is an enlarged configuration diagram near a rear end fence.

FIG. 4 is a perspective view mainly showing a staple device.

FIG. 5 is a perspective view showing a state in which a bundle of recording sheets after binding is released by a release belt.

FIG. 6 is an enlarged perspective view of a main part of the paper ejection tray shift mechanism.

FIG. 7 is a perspective view showing a vertical movement mechanism of a paper discharge tray.

FIG. 8 is a configuration diagram of a punch unit.

FIG. 9 is a block diagram of an electrical system of the sheet processing apparatus according to the first embodiment of the present invention.

FIG. 10 is a diagram showing a recording sheet on which a leading end and a trailing end have been subjected to a punching process.

11 is a diagram illustrating a state where the recording paper illustrated in FIG. 10 is folded.

FIG. 12 is a diagram illustrating a recording sheet on which a plurality of punching processes have been performed in a central portion.

13 is a diagram illustrating a state where the recording paper illustrated in FIG. 12 is folded.

FIG. 14 is a flowchart of a punch check.

FIG. 15 is a flowchart of an entrance sensor ON check.

FIG. 16 is a flowchart of an entrance sensor off check.

FIG. 17 is a diagram for explaining the setting of a job counter for punch processing.

FIG. 18 is a flowchart when the job counter is 0.

FIG. 19 is a flowchart when the job counter is 1.

FIG. 20 is a flowchart when the job counter is 2.

FIG. 21 is a flowchart when the job counter is 3.

FIG. 22 is a flowchart when the job counter is 4.

FIG. 23 is a diagram illustrating punch processing in a normal copy mode.

FIG. 24 is a diagram illustrating a recording sheet fed in a longitudinal direction.

FIG. 25 is a diagram illustrating a recording sheet fed in the short direction.

FIG. 26 is a processing flowchart in a case where a punch mode is selected according to the recording paper conveyance direction and the content of a double-sided copy mode.

FIG. 27 is a processing flowchart in a case where staple processing is selected in accordance with the recording paper conveyance direction and the contents of a punch mode.

FIG. 28 is an explanatory view showing a state in which a punching process has been performed on the leading and trailing edges of a recording sheet, and a stapling process has been performed on a central portion.

FIG. 29 is an explanatory diagram showing a state where a punching process has been performed on a central portion of a recording sheet and a staple process has been performed on the central portion.

FIG. 30 is an explanatory diagram showing a state in which punch processing and stapling processing have been performed on an end portion of a recording sheet.

FIG. 31 is a perspective view showing an appearance of a mechanism for performing saddle stitching.

FIG. 32 is a flowchart showing the processing contents when performing the processing shown in FIGS. 28 to 30;

FIG. 33 is an overall configuration diagram of a sheet processing apparatus according to a second embodiment.

FIG. 34 is a schematic configuration diagram of a punch unit according to a second embodiment.

FIG. 35 is an explanatory diagram showing an operation when punching a first-row punch hole for saddle stitching in the punch unit according to the second embodiment.

FIG. 36 is an explanatory diagram showing an operation when punching a second row of punch holes for saddle stitching in the punch unit according to the second embodiment.

FIG. 37 is an explanatory diagram showing an operation when punching a single binding punch hole at an end of a recording sheet by the punch unit according to the second embodiment;

FIG. 38 is a diagram showing a configuration for position control of a punch unit according to a second embodiment.

FIG. 39 is a block diagram schematically illustrating a control configuration of a punch unit according to a second embodiment.

FIG. 40 is a flowchart showing a control procedure of a punching operation of a first row and a second row of punch holes.

FIG. 41 is an explanatory diagram showing a state in which a punch hole for saddle stitching is opened at a position separated by the same distance from the center with respect to recording paper of one job.

42 is a perspective view showing a state where the bundle of recording sheets of FIG. 41 is saddle stitched.

FIG. 43 is an explanatory diagram showing a state in which a punch hole for saddle stitching is punched in a position farther from the center of a recording sheet positioned outside on recording sheets of one job;

FIG. 44 is a perspective view showing a state where the bundle of recording sheets of FIG. 43 is saddle stitched.

FIG. 45 is a flowchart illustrating a processing procedure when controlling the interval between punch holes for saddle stitching in accordance with the thickness of recording paper.

[Explanation of symbols]

 2 Upper transport roller 4 Lower transport roller 5 Return roller (vertical alignment means) 6 Paper feed roller 8 Branch claw 9 Jogger fence 10 Release belt 11 Staple device (staple unit) 12 Paper discharge tray 15a Punch side roller 15b Dice side roller 70 CPU 81 Image forming apparatus (copier) 101 Punch motor 102, 102a, 102b Punch 103, 103a, 103b Dice 106a, 106b Punch hole 110 Punch hole 120, 121, 122, 123 Staple (position) A Punch unit B Recording paper transport Direction C Center line L1 Distance from center line to punch hole L2 Distance from recording paper edge to punch hole M Paper processing device P Recording paper S Stipler

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Junichi Iida 1-3-6 Nakamagome, Ota-ku, Tokyo Stock inside Ricoh Company (72) Inventor Yukitaka Nakazato 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Inside Ricoh Company (72) Inventor Nobuyoshi Suzuki 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh Company (72) Kenji Yamada 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh Company (72) Inventor Yoshihiko Nakayama 2-2-13 Nishiki, Naka-ku, Nagoya-shi, Aichi F-term in Ricoh Elemex Co., Ltd. 2H072 CA05 GA02 GA08 3F108 GA02 GB01 GB07 HA02 HA39 HA43 HA55

Claims (22)

[Claims] 1. A paper processing apparatus comprising a punch unit for punching a punched hole in a recording sheet after forming an image, wherein when a mode in which a plurality of originals are copied onto one recording sheet in a single-sided copy mode, the recording sheet is A sheet processing apparatus comprising a control unit for performing a punching process at a front end and a rear end of a sheet. 2. A paper processing apparatus having a punch unit for punching a punched hole in a recording sheet after image formation, wherein in a mode of copying a plurality of documents on one recording sheet,
A sheet processing apparatus comprising a control unit for performing a plurality of punching processes at a central portion of a recording sheet. 3. When the copy mode is switched to a normal mode in which one document is copied onto one sheet of recording paper, control means is provided for switching to a punch mode in which a punching process is performed on one end surface of the recording paper. 3. The paper processing apparatus according to claim 1, wherein 4. When the copy mode is prohibited,
3. The sheet processing apparatus according to claim 1, further comprising control means for prohibiting the punching operation. 5. A sheet processing apparatus provided with a punch unit for punching a punched hole in recording paper after image formation, wherein in a one-sided copy mode, a plurality of originals are copied onto one recording paper. A first punch mode for punching the leading and trailing edges, and a second punch mode for performing a plurality of punching processes on the central portion of the recording paper, wherein one of the first and second punch modes is provided. Is selected, if the short-side recording paper is selected from the recording papers set in the paper supply unit that is supplied to the image forming unit, the execution of the punch mode is prohibited. A sheet processing apparatus comprising a control unit. 6. A paper processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after image formation, wherein in a single-sided copy mode, a plurality of originals are copied onto one sheet of recording paper. A first punch mode for punching the leading and trailing edges, and a second punch mode for punching a plurality of punches at the center of the recording paper. Surface side is 1
A sheet processing apparatus comprising: a control unit that prohibits execution of the punch mode when the image is formed by one image. 7. A sheet processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after image formation and a stapling apparatus for stapling a recording sheet bundle, wherein a plurality of originals are processed in one-side copy mode. In a mode for copying on a recording sheet, the apparatus has a first punch mode for performing a punching process on the leading and trailing edges of the recording sheet, and a second punching mode for performing a plurality of punching processes on a central portion of the recording sheet. A sheet processing apparatus comprising: a control unit that prohibits execution of the staple mode for performing the stapling when one of the first and second punch modes is selected. 8. The apparatus according to claim 5, wherein when the execution is prohibited, the control means displays a message to that effect.
The sheet processing apparatus according to any one of claims 1 to 7. 9. A sheet processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after image formation and a stapling apparatus for stapling a bundle of recording sheets, wherein a plurality of originals are printed in one-sided copy mode. In a mode for copying on a recording sheet, the apparatus has a first punch mode for performing a punching process on the leading and trailing edges of the recording sheet, and a second punching mode for performing a plurality of punching processes on a central portion of the recording sheet. If either of the first and second punch modes is selected and the staple mode for performing the staple binding is selected, the transport path is switched so that the recording paper is not transported to the staple device. A sheet processing apparatus comprising a control unit. 10. A sheet processing apparatus provided with a punch unit for punching a punched hole in a recording sheet after image formation and a stapling apparatus for stapling a recording sheet bundle, wherein a plurality of originals are processed in one-side copy mode. In a mode for copying on a recording sheet, the apparatus has a first punch mode for performing a punching process on the leading and trailing edges of the recording sheet, and a second punching mode for performing a plurality of punching processes on a central portion of the recording sheet. A sheet processing apparatus comprising: a control unit that automatically switches stapling processing for recording sheets stacked on a staple tray according to the selected punch mode. 11. The control device according to claim 7, wherein a mode in which a stapling process is performed on an edge of the recording paper bundle is selected in a mode in which an edge of the recording paper is punched. 11. The sheet processing apparatus according to claim 10, wherein when the mode is changed to a mode for performing a punching process or a mode for performing a punching process on a front end and a rear end, the mode is switched to a mode for performing a stapling process on a central portion of a recording sheet bundle. . 12. The control means selects a mode in which a plurality of punching processes are performed on a central portion of the recording paper or a mode in which a punching process is performed on a front end and a rear end, and a mode in which a central portion of a recording paper bundle is stapled. 11. The sheet processing apparatus according to claim 10, wherein when the mode is changed to a mode in which the end of the recording sheet is punched, the mode is changed to a mode in which the end of the recording sheet bundle is stapled. . 13. When the staple mode is changed while the punch mode and the staple mode corresponding to the punch mode are selected, the control means switches the punch mode in accordance with the staple mode. The sheet processing apparatus according to claim 11, wherein: 14. The sheet processing apparatus according to claim 11, further comprising a display unit for displaying that a mode change has been performed by said control unit. 15. A sheet processing apparatus provided with a punch unit for punching a hole in a recording sheet after image formation, wherein the punch unit includes a plurality of rows of perforations arranged in a direction orthogonal to a recording sheet conveyance direction. A sheet processing apparatus, comprising: 16. The method according to claim 16, wherein the plurality of rows of perforated portions are first and second perforated portions.
16. The method according to claim 15, wherein the first perforation is performed on the conveyed recording paper in the first perforation portion, and then the second perforation is performed on the second perforation portion. Paper handling equipment. 17. A feed rate and / or recording of a piercing part for performing piercing while performing a second piercing in the second piercing part after performing a first piercing in the first piercing part. 17. The paper processing apparatus according to claim 16, further comprising speed control means for changing a paper conveyance speed. 18. The method according to claim 18, wherein the change of the speed by the speed control means is such that when the sheet is bent at the center after the punching, the punched hole formed by the second punching matches the punched hole formed by the first punching. The sheet processing apparatus according to claim 17, wherein: 19. The sheet processing apparatus according to claim 16, wherein when the recording paper is punched in the vicinity of the end, the first punching unit punches the recording paper. 20. A control unit for setting punching timing for each row of the plurality of rows of punching units, wherein the control unit sets the punching timing to different values in one image forming job. The sheet processing apparatus according to claim 15, wherein: 21. The sheet processing apparatus according to claim 20, wherein said control means sets said punching timing to a different value according to the thickness of the recording paper. 22. The apparatus according to claim 20, further comprising speed control means for changing a feed speed of said perforation portion and / or a conveyance speed of recording paper in accordance with a perforation timing set by said control means. Or the paper processing apparatus according to 21.