JP3926545B2 - Paper processing apparatus, paper processing system, and image forming system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet processing apparatus and a sheet processing system that perform sheet processing such as binding, punching, and folding on sheets, and relates to a sheet output apparatus such as a copying machine, a printer, a facsimile machine, and a printing machine. Further, the present invention relates to a sheet processing apparatus, a sheet processing system, and an image forming system which are attached to the sheet output apparatus and implement the above functions.
[0002]
[Prior art]
For example, a paper processing apparatus that performs processing such as binding on a sheet on which an image is recorded by an image forming apparatus such as a copying machine, a printer, a facsimile, punching for filing, and folding the bound sheet Various proposals have been made in the past. For example, there is a sheet post-processing apparatus having a function of performing saddle stitching and center folding of a plurality of sheets as disclosed in, for example, Japanese Patent Application Laid-Open No. 11-289368. The sheet post-processing apparatus aligns a plurality of sheets on which an image is formed with reference to one edge, and staples the center of these aligned sheets, that is, performs saddle stitching and staples the center. Thus, the sheet bundle is folded into two, so-called center folding is performed and the sheet is discharged.
[0003]
As related techniques, for example, the inventions disclosed in JP-A-6-105367, JP-A-7-48062, and JP-A-10-181990 are known.
[0004]
[Problems to be solved by the invention]
However, JP-A-11-289368, JP-A-7-48062, and JP-A-10-181990 disclose a saddle stitching mechanism that binds at the center of a sheet bundle and an intermediate folding mechanism that performs folding. However, there is no disclosure regarding control that determines whether or not to perform saddle stitching or folding according to the number and properties of sheets. Japanese Laid-Open Patent Publication No. 6-105367 discloses that the operation is prohibited when the middle folding and the edge binding are selected at the same time. However, in consideration of usability and productivity, the saddle stitching and the middle folding are performed. The control configuration is not disclosed.
[0005]
When executing the saddle stitching / folding function in this way, for example,
1) Saddle stitching recording paper groups of the same image is not very meaningful except in the case of memo paper, for example.
[0006]
2) If the folding process is performed one sheet at a time when the recording sheets of the same image are folded, productivity is poor.
[0007]
3) When a plurality of image groups having the same image configuration are ejected from the image forming apparatus, if they are collected for each recording paper group of each group and subjected to half-fold processing, productivity decreases.
[0008]
4) When a plurality of image groups having the same image configuration are collectively folded, it is difficult to understand the boundary between the groups.
[0009]
5) If a group of recording sheets of the same image is not folded in a lump, productivity will be reduced, but if the number of sheets increases, folding will be insufficient.
These problems all cause a decrease in usability.
[0011]
The present invention has been made in view of such problems, and an object thereof is to provide a sheet processing apparatus, a sheet processing system, and an image forming system having a saddle stitching and center folding function that are excellent in usability. .
[0012]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention provides:During ~Depending on the folding means and the mode information sent from the paper output device sideIn the middleA sheet processing apparatus including a control unit that controls the folding unit;Further comprising a punching means for punching paper,The control means includesWhen the middle folding mode is designated, the punching operation by the punching means is prohibited.It is characterized by that.
  The present invention also provides a sheet processing apparatus comprising a saddle stitching means, a saddle folding means, and a control means for controlling the saddle stitching means and the saddle folding means in accordance with mode information sent from the sheet output device side. And further comprising a punching means for punching paper, wherein the control means performs punching operation by the punching means when any one of the saddle stitching mode, the saddle stitching mode and the saddle stitching / saddle folding mode is designated. Is prohibited.
Further, the present invention provides a sheet processing apparatus including a saddle stitching unit and a control unit that controls the saddle stitching unit according to mode information sent from the sheet output device side.
A punching unit for punching paper is further provided, and the control unit prohibits a punching operation by the punching unit when the saddle stitching mode is designated..
[0013]
In addition, when the control unit determines that the number of sheets is one per number of copies when the center folding mode is instructed, the control unit collects all the sheets in the center folding mode and then collectively collects the sheets. A half-folding operation is performed by the middle folding means.
[0014]
In addition, when the control unit determines that the number of sheets is one per number of copies when the saddle stitching / center folding mode is instructed, the control unit performs the sheeting operation without executing the binding operation by the saddle stitching unit. After all of the above are collected, it is also possible to execute the folding in half by the middle folding means at once.
[0015]
In addition, when the half-folding mode is instructed, the control unit collects the output sheet groups having the same image configuration in a plurality of groups of output sheet groups having the same image configuration, and then collectively. It is also possible to execute a half-folding operation by the middle folding means.
[0016]
Further, when the intermediate folding mode is instructed, the control means determines whether or not the sheet bundle to be processed is within the range of the number of sheets that can be folded if the output is only the output sheet group having the same image configuration. When the range exceeds the possible number of sheets, the sheet bundle is folded twice within the foldable number of sheets, and then the processing set for the output sheet group having the same image configuration is continued.
[0017]
In addition, when the saddle stitching / saddle folding mode is instructed, the control unit determines whether the number of processed sheets is within a predetermined number of sheets set in advance. Saddle stitching is also prohibited from being folded in half by the middle folding means. Here, the specified number of sheets is set to the maximum number of sheets to be bound.
[0018]
In addition, when the saddle stitching / folding mode is instructed, the control means determines whether or not the number of processed sheets is within a range of a first specified number of sheets set in advance, and is within the range of the first specified number of sheets. In some cases, it is further determined whether or not it is within the range of the second prescribed number set in advance that is smaller than the first prescribed number. When the number of processed sheets exceeds the range of the first specified number, the binding operation by the saddle stitching unit and the double folding operation by the middle folding unit are prohibited. The first specified number is a foldable number.
[0019]
Further, the control means prohibits the binding operation by the saddle stitching means when the number of processed sheets is within the range of the first specified number and exceeds the second specified number. The second specified number is the number of sheets that can be bound.
[0020]
The control means determines whether the number of processing copies is within a preset number of processing copies when the folding operation is performed by the half-folding means, and the result of the determination is within the number of processing copies Then, a half-folding operation is performed by the middle folding means.
[0021]
In addition, when the saddle stitching mode is instructed, the control means determines whether or not the stack amount of the tray on which the discharged sheet bundle is stacked is within a range of a maximum stack amount set in advance for the tray. If it exceeds the range of the maximum stacking amount, it is further determined whether or not stacking is possible on another tray. If stacking is possible, the discharge destination of the sheet bundle is switched to the other tray and discharged. At that time, if the other tray cannot be stacked, the operation is interrupted.
[0023]
Further, the present invention determines whether or not the number of processing copies is within a preset processing portion range when executing the half-folding operation by the half-folding means, and performs predetermined processing such as processing according to the determination result. If it is within the range of the number of copies, control information is received from the sheet processing apparatus that executes the middle folding and the first control means provided on the sheet processing apparatus side, and the control information is sent to the first control means. In a paper processing system comprising a paper output device having a second control means for transmission, when the number of processing copies set in advance is exceeded, a warning is given to that effect, and the subsequent operation of the paper processing device is performed. Display selection means for selecting is provided on the paper output device side.
[0024]
Further, according to the present invention, when the middle folding mode is instructed, the output paper groups having the same image configuration are collected in the middle folding portion for a plurality of groups of output paper groups having the same image configuration, and then collectively by the middle folding means. Control information is received from the sheet processing apparatus that executes the folding operation, the image forming unit that forms an image based on the input image data, and the first control unit provided on the sheet processing apparatus side. In an image forming system including an image forming apparatus including a second control unit that transmits control information to the first control unit, the second control unit includes a plurality of groups having the same image configuration. Among these, the image forming unit is controlled to output an image so that the image forming directions of adjacent groups are different.
[0025]
Further, the present invention provides control information from a sheet processing apparatus having a folding function, an image forming unit that forms an image based on input image data, and a first control unit provided on the sheet processing apparatus side. In an image forming system including an image forming apparatus having a second control unit that receives and transmits control information to the first control control unit, a medium on which an image is formed by the image forming unit is an OHP In the case of either a sheet or a cardboard, the first control unit prohibits the folding operation by the half-folding unit. In the case of a paper processing apparatus having a saddle stitching function instead of the half-folding function, the first control is performed when the medium on which the image is formed by the image forming means is either an OHP sheet or cardboard. The means prohibits the binding operation by the saddle stitching means.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0027]
1. overall structure
FIG. 1 is a diagram showing a schematic configuration of a sheet post-processing apparatus connected to a copying machine. The configuration and operation of each unit will be described with reference to this figure.
[0028]
The paper post-processing device 2 is connected to the paper discharge port of the copying machine 1. As a result, the copy paper discharged from the copying machine main body 1 is carried into the paper post-processing apparatus main body from the entrance guide plate 201 of the paper post-processing apparatus 2 and conveyed into the paper post-processing apparatus 2 by the conveying rollers 202 and 203. The A rotary punch 301 is provided on the upstream side of the branching claws 211 and 221. If there is an instruction for punching operation from the copying machine 1, the rotary punch 301 is driven to punch at a predetermined position (sheet rear end) of the sheet. .
[0029]
When the non-staple mode is selected in the operation unit 11 of the copying machine main body 1 (see FIG. 20 described later), the sheet passes through the branch claws 211 and 221 (normally, the branch claws 211 and 221 are transported in a non-staple manner). The paper is discharged and stacked on the lower stacking tray 301 and the upper stacking tray 321 by the paper discharge roller 211 (located in the direction of the path 220). At this time, the paper discharge guide plate 231 is in a closed state.
[0030]
The lower stacking tray 301 and the upper stacking tray 321 can be moved up and down by independent drive units (not shown), and can be moved to the sheet discharge position of the discharge roller 211, respectively. The lower stacking tray 301 and the upper stacking tray 321 move according to the selected discharge mode, and the stacking tray can be switched. The paper post-processing apparatus is provided with an interrupt tray 214. When the interrupt tray ejection mode is selected in the operation unit of the copying machine 1, the branch claw 211 rotates and the paper is stored in the interrupt tray. The paper is transported to the transport path 210, discharged to the interrupt tray 214 by the paper discharge roller 213, and stacked. In addition, sensors S1 and S2 for detecting the paper surface of the upper stacking tray 321 or the lower stacking tray 301 are provided at the sheet discharge positions of the discharge roller 211 and the folding roller 451. The load amount can be known from the detection outputs of the paper surface sensors S1 and S2 and the respective positions of the lower stacking tray 301 and the upper stacking tray 321.
[0031]
In the combination in which the stapling mode is selected in the operation unit 11 of the copying machine main body 1, the branching claw 221 operates to carry the paper into the staple conveyance path 240, and the staple conveyance path 240 is moved to the staple tray 402 side by the conveyance roller 241. Further, the sheet is discharged to the stable tray 402 by the staple tray discharge roller 242 and stacked on the staple tray 402. The paper discharged to the staple tray 402 is dropped downward on the staple tray 402 one by one by the hitting roller 250 and pressed against the paper trailing edge reference fence 410 to align the paper trailing edges. Further, the jogger fence 422 performs alignment in the sheet width direction (direction orthogonal to the sheet conveyance direction) for each sheet. The staple tray 402 is used when executing functions such as sheet alignment, saddle stitching (stapling), and center folding, and functions as a sheet processing tray.
[0032]
When edge binding is further selected from the operation unit 11 when the mode is selected, the sheet discharge guide plate 231 is opened through the link 233 by the rotation of the cam 234 as shown in FIG. When the last sheet is selected, after the final sheet is aligned by the jogger fence 422, the end surface binding stapler 401 performs one or two binding processes at a predetermined position at the rear end of the sheet bundle. Then, the bundle of sheets subjected to the binding process is lifted by a discharge claw 423 integrated with a discharge belt (not shown) until the leading end reaches the position of the paper discharge roller 211. Thereafter, the paper discharge guide plate 231 is closed by the rotation of the cam 234, and the paper discharge roller 211 is pressurized by the weight of the paper discharge guide plate 231. It is discharged and stacked on the stacking tray 321.
[0033]
1.1 Saddle stitching mechanism
FIG. 2 is a diagram illustrating a schematic configuration of a mechanism unit that performs saddle stitching processing.
[0034]
If the saddle stitching is further selected from the operation unit 11 when the mode is selected, after the final sheet is aligned by the jogger fence 422, the central portion of the sheet bundle is moved to the saddle stitching position by the discharge claw 423 as described above. Two center stitching processes are performed at the center by two saddle stitching staplers 403 which are lifted upward so as to be positioned and spaced apart by a predetermined distance (120 mm in this embodiment). At the position facing the saddle stitch stapler 403, two clinchers 407 attached to a fixing member 408 that is rotatably attached have a saddle stitch stapler rotated by the eccentric cam 409 as shown in the operation explanatory diagram of FIG. It moves in the 403 direction and stops at a predetermined position, and the saddle stitching stapler 403 moves in the direction of the clincher 407 to pinch the sheet bundle and perform a binding process at a predetermined position of the sheet bundle. This operation is shown in more detail in FIG. That is, the sheet bundle that is saddle-stitched by the operation shown in FIGS. 3 and 4 is lifted upward by the discharge claw 423 as described above, and the position of the staple bound by the saddle-stitching stapler 403 is set to a predetermined position. Stop when it reaches. Next, the paper discharge guide plate 231 in the open state indicated by the chain line in FIG. 11 is closed as indicated by the solid line, and the vicinity of the front end of the sheet bundle is sandwiched. Further, the drive motor (not shown) of the paper discharge roller 211 is locked and the paper discharge roller 211 is fixed to fix the leading end of the paper bundle. As shown in FIG. 12, the folding plate 466 is folded so that the needle position of the paper bundle is opposed. After pressing in the direction of the rollers 451 and 452 and folding processing is performed on the center of the sheet by the folding rollers 451 and 452, the sheet bundle is discharged and stacked on the stacking tray 301.
[0035]
When the leading end of the sheet bundle is fixed by the sheet discharge guide plate 231 in this way, the movement of the sheet bundle due to the deflection caused by the pressing of the folding plate 466 is only from a certain direction at the rear end of the unfixed sheet bundle. The folding position is stable. In addition, by locking the paper discharge roller 211, the paper bundle can be reliably fixed by the paper discharge guide plate 231.
[0036]
Note that, after the saddle stitching, the sheet bundle discharging operation when the center folding is not performed is the same as in the case of the edge binding described above, and the sheet is discharged via the discharge roller 211.
[0037]
1.2 Folding mechanism
FIG. 5 is a diagram illustrating a schematic configuration of a mechanism unit that performs a sheet folding process.
[0038]
In the drawing, a folding plate 466 is provided with a shaft portion 464 integrated with the folding plate 466 so as to be movable along the guide groove 465, and the rotational driving force of the folding plate drive motor 461 causes the intermediate gear 462 to move. Via the link 463, the folding plate 466 is reciprocated. Further, as can be seen from the perspective view showing the positional relationship between the folding plate 466 and the folding rollers 451 and 452 in FIG. 6, three convex portions 466a, 466b, and 466c are provided at the tip of the folding plate 466, The two convex portions 466a and 466c on both sides are provided so as to be at the same position as the needle position of the saddle stitching stapler 403 (in this embodiment, at an interval of 120 mm). The central convex portion 466b is provided so as to be positioned at the central portion of the two needle positions of the saddle stitching stapler 403.
[0039]
As shown in FIG. 5, the folding rollers 451 and 452 transmit the driving force of the folding roller driving motor 453 to the driving gear pulley 455 via the timing belt 454, and further transmit the driving force to the intermediate gear 456 and the driven gear 457. The folding rollers 451 and 452 are both driven to rotate. The drive gear pulley 455, the intermediate gear 456, and the driven gear 457 are connected by arms 458 and 459, and are configured to be movable while maintaining the distance between the axes. As a result, even when the sheet bundle is sandwiched between the folding rollers 451 and 452 and the rollers are separated from each other, the rotational driving force can be reliably transmitted to both the folding rollers 451 and 452. The folding rollers 451 and 452 are elastically biased toward each other by a tension spring (not shown) and are pressed against each other with a predetermined force at the nip portion.
[0040]
1.3 Folding operation
FIG. 7 is an operation explanatory view showing the operation when folding and discharging the sheet bundle by the folding plate 466. In these drawings, the convex portions 466a, 466b, 466c of the folding plate 466 press the needle position of the sheet bundle as shown in FIG. 9 to be described later, and advance from the nipping position of the folding rollers 451, 452 to a position where it overlaps further. Then, the folding process is performed on the central portion of the sheet bundle by the pressing and rotation of the folding rollers 451 and 452. Since the folding roller pair 451 and 452 cannot directly press the portion of the sheet bundle sandwiched between the convex portions 466a, 466b, and 466c of the folding plate 466 and the folding rollers 451 and 452, the folding state is poor due to the thickness of the folding plate 466. Become. Since the folding state of the needle position is worse than that where there is no needle depending on the thickness of the needle, the convex portions 466a and 466c of the folding plate 466 are made to coincide with the needle position of the sheet bundle as shown in FIGS. As a result, the position at which the folded state becomes worse coincides with the needle position, and a minimum folded state can be ensured.
[0041]
Further, the convex portions 466a, 466b, and 466c of the folding plate 466 press the sheet bundle, and the leading end portion of the sheet bundle is fixed at a position overlapping from the nipping position of the folding rollers 451 and 452, and the folding plate 466 is attached to the sheet bundle. After pressing the needle position in the direction of the opposing folding rollers 451 and 452 and performing folding processing on the center of the sheet by the folding rollers 451 and 452, the sheet bundle is discharged onto the stacking tray 301 and stacked. At this time, as described above, the folding position is stabilized by fixing the leading end of the sheet bundle with the discharge guide plate 231 as shown in FIG. In addition, by locking the paper discharge roller 211, the paper bundle can be reliably fixed by the paper discharge guide plate 231.
[0042]
Further, the convex portions 466a, 466b, and 466c of the folding plate 466 press the sheet bundle and advance from the nipping position of the folding rollers 451 and 452 to an overlapped position, and the sheet bundle is pressed and rotated by the folding rollers 451 and 452. In the operation of performing the folding process on the central portion of the paper, the convex portions 466a, 466b, 466c of the advanced folding plate 466 need to be retracted from the pressurization state of the folding rollers 451, 452 and the sheet bundle. The portions where 466 is sandwiched between the folding rollers 451 and 452 are only the convex portions 466a, 466b and 466c. Since the area is small, the frictional force of the folding rollers 451 and 452 is small, and the load on the driving unit when retreating is small. I'll do it.
[0043]
Further, when the convex portions of the folding plate 466 are two places, as shown in FIG. 13, when the paper bundle is pressed against the folding rollers 451 and 452, the central portion of the paper bundle is not completely pressed and is bent. Since wrinkles occur in the central portion in the folded state, three convex portions 466a, 466b, and 466c are provided. Further, the folding plate 466 pushes directly above the position of the staple bound by the saddle stitch stapler 403 (FIGS. 8 and 9), and the sheet discharge guide plate 231 catches the needle of the sheet bundle whose tip is fixed, thereby causing friction. The folding roller is pushed in the directions of 451 and 452 while receiving the resistance of FIG. 10 (FIG. 10). As a result, a folding process in which the needle position and the folding position of the sheet bundle are surely matched can be performed.
[0044]
2. Control configuration
2.1 Overall configuration
FIG. 14 is a block diagram illustrating a schematic configuration of a sheet processing system including a sheet post-processing apparatus according to the present embodiment.
[0045]
As can be seen from FIGS. 1 and 14, the system comprises a paper post-processing device 2 and a copier (paper output device) 1 to which the paper post-processing device 2 is connected. Each of the devices 1 and 2 is provided with control units 10 and 20 each having a CPU and a ROM and a RAM associated therewith, and by sending / receiving processing information between them, the saddle stitching unit of the sheet post-processing device 2 21 and the control content of the middle folding part 22 are determined. In other words, the sheet post-processing apparatus 2 has a configuration in which the control unit 20 controls the saddle stitching unit 21 and the middle folding unit 22, and the folding unit 22 and folding plate unit 24 are further controlled as the middle folding unit 22. As described above, the folding roller unit 23 controls the folding motor 453 and the folding plate unit 24 controls the driving of the folding plate drive motor 461. Further, the driving unit of the punch unit 31, the end binding unit 32, and the paper discharge guide unit 33 is also controlled by the control unit 20. On the other hand, on the copier 1 side, the display unit 11, the operation unit 12, and the paper output control unit 13 are controlled by the control unit 10.
[0046]
In such a control configuration, the information input to the operation unit 12 of the copying machine 1 includes the presence / absence information of the saddle stitching process and the presence / absence information of the middle folding process as shown in FIG. By touching a desired display portion of the unit 12, the selection is made as described later, and it is transmitted to the paper post-processing side. Based on these input information, information such as paper size and processing mode is transmitted from the control unit 10 of the copying machine 1 to the control unit 10 of the paper post-processing apparatus 1, and the control unit 20 of the paper post-processing apparatus 2 includes these information. Based on this, the saddle stitching portion 21 and the middle folding portion 22 are controlled. In this embodiment, as a processing mode,
(1) Mode that only performs saddle stitching
(2) Mode to perform only half-folding
(3) Mode to perform saddle stitching and center folding simultaneously
There are three modes.
[0047]
Further, according to this mode, eight types of saddle stitching and half-folding processing are performed, and one type of paper discharge control is performed.
[0048]
FIG. 15 is a diagram illustrating a display state of the operation unit 12 in which the user inputs the saddle stitching / folding process. FIG. 15A shows a normal operation screen in which various processes of the sheet post-processing apparatus 2 can be selected. In this embodiment, in addition to the process related to saddle stitching, as shown in FIG. 15A, an end stapling process for binding the rear end part of the sheet bundle and a punching process for punching the rear end part of the sheet are also performed. It can be selected. Note that the edge stapling process and the saddle stitching process for binding the central portion of the sheet bundle are exclusive selection, and these two processes cannot be selected at the same time. When the saddle stitching process is selected on this screen, the display is switched to the screen shown in FIG. 15B so that saddle stitching and half-folding can be selected. Processing mode information is transmitted to the control unit 20 of the sheet post-processing apparatus 2 according to the processing mode selected here, and the control unit 20 controls the saddle stitching unit 21 and the middle folding unit 22. The default processing is set in advance, but can be changed by the user's selection.
[0049]
2.2 Control corresponding to the mode
2.2.1 Process 1 (Process that does not perform saddle stitching in the saddle stitching & saddle folding mode)
FIG. 16 is a flowchart showing the processing procedure of processing 1.
[0050]
In this routine, when the processing mode is other than the processing mode {circle around (3)} (the saddle stitching & folding mode) (step 1-1), the processing according to each processing mode selected or set in advance is performed (step 1). -5) In the case of processing mode (3), it is determined whether or not the number of output sheets per copy is 1 (step 1-2). If the number is 2 or more, the saddle stitching and center folding process is continued ( (Steps 1-1, 2 and 4) When the number of sheets is 1, the saddle stitching process is canceled and only the middle folding process is performed (Step 1-3) so that unnecessary saddle stitching process is not performed. As a result, the processing is efficiently performed and the usability is improved.
[0051]
2.2.2 Processing 2 (Processing when only one sheet is output in the middle folding mode and other cases)
FIG. 17 is a flowchart showing the processing procedure of processing 2.
[0052]
In this routine, when the processing mode is other than the processing mode {circle around (2)} (only the middle folding mode) (step 2-1), processing according to each processing mode selected or set in advance is performed (step 2-). 5) In the case of processing mode {circle around (2)}, it is determined whether or not the number of output sheets per copy is 1 (step 2-2). The output sheets are collected for each copy, and the sheet folding collected by the sheet folding means is folded in half (step 2-4). After collecting in the folding part, the middle folding process is performed (step 2-3) to increase the productivity of the process.
[0053]
2.2.3 Processing 3 (processing when one output per copy is in saddle stitching & folding mode)
FIG. 18 is a flowchart showing the processing procedure of processing 3.
[0054]
In this routine, when the processing mode is other than (3) (saddle stitching & bi-folding mode) (step 3-1), processing according to each processing mode selected or set in advance is performed (step 3). -5) In the case of processing mode {circle over (3)}, it is determined whether or not the number of output sheets per copy is 1 (step 3-2). Step 3-4) When one sheet is output, the output sheets are collected together in the middle folding section, and then the middle folding process is performed (step 3-3) to increase the productivity of the process. .
[0055]
2.2.4 Process 4 (Processing for paper with the same image configuration in the mode of only folding)
FIG. 19 is a flowchart showing the processing procedure of processing 4.
[0056]
In this routine, when the processing mode is other than (2) (only the middle folding mode) (step 4-1), processing according to each processing mode selected or set in advance is performed (step 4-5). In the case of the processing mode (2), it is checked whether or not there is a group having the same image configuration in the output paper group (step 4-2). Then, the middle folding process is performed (step 4-4). If the output sheet group exists, the output sheet group having the same image configuration is collected in the middle folding section and then the middle folding process is performed (step 4-3). To increase productivity.
[0057]
2.2.5 Process 5 (Process performed according to the same image configuration and the number of sheets that can be folded in the middle folding only mode)
FIG. 20 is a flowchart showing the processing procedure of processing 5.
[0058]
In this routine, when the processing mode is other than (2) (only the middle folding mode) (step 5-1), processing according to each processing mode selected or set in advance is performed (step 5-6). In the case of the processing mode (2), it is checked whether or not only the output sheet group having the same image configuration is output (step 5-2). Otherwise, the processing according to each processing mode is performed (step 5). -6).
[0059]
On the other hand, in the case of only the same image group, it is checked whether or not the sheet bundle to be processed is within the foldable sheet number range (step 5-3). Folding is executed (step 5-4), the number of copies (number of copies) is subtracted from the designated number of copies (or the number of copies) (step 5-5), and the process returns to step 5-3 to determine whether the number of foldable sheets is within the range. Check if. If it is not within the range of the foldable number of sheets, the processing of steps 5-4 and 5-5 is executed. When the number of foldable sheets is within the range of the foldable number of sheets, the designated number of copies (number of sheets) is collected and the middle folding is performed (step 5). -7). In this way, the productivity of the processing is increased while the paper is folded in half for all the paper.
[0060]
2.2.6 Processing 6 (processing performed according to the number of sheets to be processed in the saddle stitching & center folding mode)
FIG. 21 is a flowchart showing the processing procedure of processing 6.
[0061]
In this routine, when the processing mode is other than (3) (saddle stitching & center folding mode) (step 6-1), processing according to each processing mode selected or set in advance is performed (step 8- 5) In the case of processing mode {circle over (3)}, it is checked whether or not the number of processed sheets exceeds 15 (step 6-2). If not, the processing is continued (step 6-4). Both the saddle stitching and the middle folding are canceled (step 6-3), and control is performed so that processing not intended by the user is not performed. In the case of this embodiment, the number of sheets that can be saddle-stitched is 15 and the number of sheets that can be folded is 20; therefore, the number of sheets that can be processed is different. The processing is canceled.
[0062]
2.2.7 Processing 7 (processing performed according to two specified processing number of sheets in the saddle stitching & center folding mode)
FIG. 22 is a flowchart showing the processing procedure of processing 7.
[0063]
In this routine, when the processing mode is other than (3) (saddle stitching & center folding mode) (step 7-1), processing according to each processing mode selected or set in advance is performed (step 7-). 7) In the case of processing mode {circle over (3)}, it is checked whether or not the number of processed sheets exceeds 20 (step 7-2), and if it exceeds, both the saddle stitching and center folding processes are canceled (step 7-6). If not, it is checked whether the number of processed sheets exceeds 15 (step 7-3). If not, the process is continued (step 7-4). If it exceeds, only saddle stitching is processed. Is canceled and the process of only the middle folding is continued (step 7-5), and control is performed so that the process desired by the user can be performed as much as possible. In the present embodiment, as described above, the number of saddle stitchable sheets is 15 and the number of halffoldable sheets is 20. Although the same applies to the case of the process 6, in the present embodiment, the number of saddle stitchable sheets is 15 and the number of halffoldable sheets is 20, so the determination is made based on 15 sheets and / or 20 sheets. Needless to say, this standard number of sheets differs if the ability of saddle stitching or folding is different.
[0064]
2.2.8 Processing 8 (Processing performed according to the number of processing copies in the mode including the half-folding processing)
FIG. 23 is a flowchart showing the processing procedure of processing 8.
[0065]
In this routine, the processing is set to be changed depending on whether the specified processing mode includes the half-folding processing. In this process, first, the presence / absence of the half-folding process is checked (step 8-1), and if it is not included, the process is performed according to each processing mode selected or set in advance (step 8-5). ). On the other hand, if half-folding is included, it is checked whether the number of copies exceeds 25 (step 8-2). If not, the processing is continued as it is (step 8-4). If it exceeds the upper limit, the middle folding process is canceled (step 8-3), and the set operation other than the middle folding is continued to control the stacking at the time of ejection.
[0066]
In the case of the present embodiment, when a folded sheet bundle is discharged, if it exceeds 25 copies, the stacking property on the stacking trays 301 and 321 cannot be ensured at the time of discharging, and the sheets fall from the stacking trays 301 and 321. In order to avoid this problem, the half-folding process is canceled so that the folding operation is not performed when the number of copies is large. In this case as well, it goes without saying that the criterion of step 8-2 changes according to the stack capability.
[0067]
FIG. 24 shows a display example in which a warning is displayed to the user when the number of copies to be processed exceeds the specified number in this process 8, and the subsequent operation is selected. When the number of processing copies is exceeded, confirmation is made to the user to determine whether to continue as it is or to cancel the half-folding processing, and processing that more meets the user's request is performed.
[0068]
2.2.9 Processing 9 (processing corresponding to stacking amount of stacking tray in saddle stitching mode)
FIG. 25 is a flowchart showing the control procedure of process 9.
[0069]
In this routine, when the processing mode is other than (1) (saddle stitching only mode) (step 9-1), processing according to each processing mode selected or set in advance is performed (step 9-7). . On the other hand, in the processing mode (1), it is checked whether or not the lower stacking tray 301 from which the sheet bundle is discharged after saddle stitching is full (step 9-2). It is checked whether or not the upper stacking tray 321 is full (step 9-3), and if it is also full, the processing is interrupted (step 9-4), and control is performed to prevent problems such as paper jams. ing. In step 9-3, if the upper stacking tray 321 is not yet full, the stacking tray is switched to a not full state, and the processing is continued so that a larger number of processing copies can be discharged. In the case of the present embodiment, in the case of a sheet bundle in which only saddle stitching is performed, it can be discharged to either the lower stacking tray 301 or the upper stacking tray 321, and by performing such control, the number of copies is processed. Can be more. Therefore, the determination in step 9-2 is the state of the stacking tray being discharged at the time of discharging, and if it is full, the state of the stacking tray on the side that has not been discharged at that time is checked. become.
[0070]
As described above, the surface of the uppermost sheet of the sheet bundle stacked on the lower stacking tray 301 is detected by the sheet surface sensor S1, and the surface of the uppermost sheet of the sheet bundle of the upper stacking tray 321 is detected by the sheet surface sensor. Since the lowermost position of the stacking tray 301 and the lowermost position of the upper stacking tray 321 are known on the lower side as detected by S2, the lower stacking tray 301 or the upper stacking tray 321 is positioned at the lowermost position. If the paper surface sensor S1 or the paper surface sensor S2 detects the paper surface, the lower stacking tray 301 or the upper stacking tray 321 is regarded as full. By making such a determination in steps 9-2 and 903, it is possible to know when the upper stacking tray 301 and / or the lower stacking tray 321 are full.
[0071]
2.3 Other controls
2.3.1 Control related to drilling
As described above with reference to FIG. 1, in this embodiment, a punching device called a rotary punch 301 is provided immediately after a paper receiving opening from the copier 1 side, and a hole is formed at the rear end of the paper. It is configured to be able to do. This punching is for filing paper using punch holes, and there is no point in punching paper that will be folded or saddle-stitched. Prohibited the drilling process. Since this type of rotary punch 301 itself is known, a detailed description thereof is omitted here.
[0072]
2.3.2 Image formation direction rotation control
In the subroutine of the process 4, if there are sheets having the same image configuration in step 4-2, the same image configuration group is collected in a lump in step 4-3, and then folded and ejected. For those having a configuration, an image is formed on the copier 1 side so as to be distinguished from a group having the same image configuration, for example, the image is formed by rotating 180 degrees, and sequentially discharged to the paper post-processing device 2 side. Then, as shown in FIG. 26, when a plurality of groups of sheets having the same image configuration are discharged in advance, the sheets are collectively folded and discharged onto the stacking tray. Therefore, the paper groups of different groups having the same image configuration can be clearly distinguished as paper groups having different image forming directions.
[0073]
It should be noted that whether the images are the same, the image forming direction, and the number of images formed are determined by the control unit 10 on the copier 1 side based on input from the operation unit 12, and to that effect, the control unit 20 on the sheet post-processing apparatus 2 side. The control unit 20 executes predetermined control based on the received information.
[0074]
2.3.3 Processing for paper that cannot be saddle stitched or folded
The control so far has been based on the premise that half-folding and saddle stitching can be performed, but as papers (sheets) on which an image is formed by an image forming apparatus such as a copying machine, an OHP sheet or a thick thick paper is used. and so on. The OHP sheet is made of a transparent synthetic resin sheet, and transmits light to the image formed on the sheet. Since the image cannot be projected by an overhead projector when being folded or saddle stitched, Even if center folding or saddle stitching is designated, the copying machine 1 side prohibits center folding and saddle stitching, or transmits an OHP sheet to the control unit 20 on the paper post-processing apparatus 2 side. The control unit 20 prohibits center folding and saddle stitching. In the case of thick paper, middle folding of thick paper that cannot be folded is prohibited. This naturally prohibits saddle stitching.
[0075]
OHP sheets and cardboard are not fed from a normal sheet feeding unit that is fed from a cassette due to the nature of the sheet, and are generally fed from a manual feed tray. When the manual feed tray is opened or a sheet (sheet) is set in the manual feed tray, the copying machine 1 displays a dialog for inquiring about the paper type on the display unit 11 and selecting the paper type. The paper type is selected from the operation unit 12 based on the screen. Based on this, the control unit 10 of the copying machine 1 recognizes the type of paper and executes the above-described control based on this recognition. When the display screen of the display unit 11 of the copying machine 1 is configured by a touch panel, the display unit 11 and the operation unit 12 are the same.
[0076]
【The invention's effect】
As described above, according to the present invention configured as described above, the following effects can be obtained.
[0077]
  That is, claim 13According to the described invention,The punching means for punching paper is further provided, and when any of the saddle stitching mode, the saddle stitching mode and the saddle stitching / saddle folding mode is designated, the punching means prohibits the punching operation. Unnecessary drilling is not performed in each mode,A paper processing apparatus excellent in usability can be provided.
[0079]
  Claim4According to the described invention, when it is determined that the number of sheets is one per copy when the middle folding mode is instructed, all the sheets in the middle folding mode are collected and then collectively folded. Since the folding operation by means is executed, one copyEveryA plurality of sheets are folded in at a time without being folded one by one and processed efficiently.
[0080]
  Claim5According to the invention described above, when it is determined that the number of sheets is one per number of copies when the saddle stitching / folding mode is instructed, the sheets are fed without executing the binding operation by the saddle stitching means. After all of the data has been collected, the center folding is performed by the center folding means.EveryA plurality of sheets are folded in at a time without being folded one by one and processed efficiently.
[0081]
  Claim6According to the described invention, when the half-folding mode is instructed, the output sheet groups having the same image configuration are collected in the middle folding section for a plurality of groups of output paper groups having the same image configuration, and then are collectively centered. Since the center folding is performed by the folding means, batch processing is performed for each group, and processing can be performed efficiently.
[0082]
  Claim7According to the described invention, when the middle folding mode is instructed, if only the output sheet group having the same image configuration is output, it is determined whether or not the sheet bundle to be processed is within the range of the foldable number. Depending on the determination result, it is possible to efficiently process for each output sheet group having the same image configuration.
[0083]
  Claim8According to the described invention, when the sheet bundle to be processed exceeds the foldable sheet number range, the sheet bundle is temporarily folded within the foldable sheet number, and then the processing is continued. Can be processed efficiently.
[0084]
  Claim9According to the described invention, when the saddle stitching / center folding mode is instructed, it is determined whether or not the number of processed sheets is within a predetermined number of sheets set in advance, and the appropriate number corresponding to the specified number of sheets is determined according to the determination result. Can be performed.
[0085]
  Claim10According to the described invention, when the determination result exceeds the specified number, the binding operation by the saddle stitching unit and the double folding operation by the middle folding unit are prohibited, and neither operation is performed. Inconveniences are not caused by processing the excess capacity sheets during the folding process. In addition, since processing not intended by the user is not performed, it is possible to prevent the usability from being impaired.
[0086]
  Claim11According to the described invention, since the specified number of sheets is set to the maximum number of sheets to be bound, if the saddle stitching cannot be performed, the sheets are discharged without being executed. As a result, processing unintended by the user is not performed.
[0087]
  Claim12According to the described invention, when the saddle stitching / center folding mode is instructed, it is determined whether or not the number of processed sheets is within the range of the first predetermined number of sheets set in advance. Further, since it is determined whether or not it is within the range of the second predetermined number set in advance that is smaller than the first specified number, the processing desired by the user can be performed as much as possible according to the specified number.
[0088]
  Claim13According to the described invention, when the number of processed sheets exceeds the range of the first specified number of sheets, the binding operation by the saddle stitching unit and the bi-folding operation by the middle folding unit are prohibited, and neither operation is performed. Inconvenience is not caused by processing the excess capacity sheets at the time of saddle stitching or folding. In addition, since processing not intended by the user is not performed, it is possible to prevent the usability from being impaired.
[0089]
  Claim14According to the described invention, the first specified number of sheets is the number of foldable sheets.BecauseWhen the folding is impossible, the binding operation is not performed, so that the inconvenience does not occur due to the processing of the excess capacity sheets during the saddle stitching or the middle folding process. In addition, since processing not intended by the user is not performed, it is possible to prevent the usability from being impaired.
[0090]
  Claim15According to the invention described above, when the number of processed sheets is within the range of the first specified number of sheets and exceeds the second specified number of sheets, the binding operation by the saddle stitching unit is prohibited. This prevents the binding operation from being performed, thereby preventing inconveniences during the saddle stitching process.
[0091]
  Claim16According to the described invention, since the second specified number of sheets is the number of sheets that can be bound, the binding operation is not performed beyond the number of sheets that can be bound, thereby preventing inconvenience due to saddle stitching. .
[0092]
  Claim17According to the described invention, since it is determined whether or not the number of processing copies is within a preset number of processing copies when the center folding operation is performed by the center folding means, processing according to the number of processing copies is performed based on the determination result. A paper processing apparatus that is selected and excellent in usability can be provided.
[0093]
  Claim18According to the described invention, when the determination result is within the range of the number of copies, the half-folding operation is performed by the half-folding unit, so that the processing that is not intended by the user is not performed, and the sheet has excellent usability. A processing device can be provided.
[0094]
  Claim19According to the described invention, when the saddle stitching mode is instructed, it is determined whether the stacking amount of the tray on which the discharged sheet bundle is stacked is within the range of the maximum stacking amount set in advance for the tray, If it exceeds the maximum load capacity range, it is further determined whether or not it can be stacked on another tray. If the stack is possible, the discharge destination of the sheet bundle is switched to the other tray and discharged. A series of processing can be continuously performed up to the maximum loadable amount, and efficient processing can be performed.
[0095]
  Claim20According to the described invention, if other trays cannot be stacked, the process is interrupted, so that the stacked paper bundle does not drop or jam occurs at the paper discharge port, and the usability is impaired. Can be prevented.
[0097]
According to a twenty-first aspect of the present invention, when the number of copies that can be processed is exceeded, a warning is given to that effect, and display selection means for selecting a subsequent sheet processing operation is provided on the sheet output device side. Thus, paper processing corresponding to the number of copies that can be processed is possible, and a paper processing system that is easy to use can be provided.
[0098]
According to the twenty-second aspect of the present invention, control information is received from the sheet processing apparatus, the image forming means for forming an image based on the input image data, and the first control means provided on the sheet processing apparatus side. And an image forming apparatus comprising a second control unit that transmits control information to the first control control unit, wherein the second control unit includes a plurality of groups having the same image configuration. Among them, the image forming unit is controlled so that the image forming directions of adjacent groups are different, and image output is performed, so that groups of different image configurations can be easily distinguished from a bundle of sheets folded together. Therefore, it is possible to provide an image forming system that is easy to use.
[0099]
According to a twenty-third aspect of the present invention, a sheet processing apparatus having a folding function, an image forming means for forming an image based on input image data, and a first control means provided on the sheet processing apparatus side In an image forming system comprising an image forming apparatus having a second control means for receiving control information from the first control means and transmitting control information to the first control control means, an image is formed by the image forming means. When the medium is an OHP sheet or thick paper, the half-folding operation by the half-folding means is prohibited. Therefore, an unnecessary sheet or a sheet that cannot be folded does not enter the middle folding process, and image formation is easy to use. A system can be provided.
[0100]
According to the twenty-fourth aspect of the present invention, the sheet processing apparatus having the saddle stitching function, the image forming means for forming an image based on the input image data, and the first provided on the sheet processing apparatus side. In an image forming system including an image forming apparatus including a second control unit that receives control information from a control unit and transmits control information to the first control control unit, an image is formed by the image forming unit. When the medium to be printed is an OHP sheet or cardboard, saddle stitching is prohibited, so an unnecessary sheet or a sheet that cannot be saddle stitched does not enter the saddle stitching process, and an image forming system excellent in usability is provided. can do.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a schematic configuration of a sheet post-processing apparatus according to an embodiment connected to a copying machine for explaining the embodiment of the invention.
FIG. 2 is a diagram illustrating a schematic configuration of a mechanism unit that performs saddle stitching processing of the sheet post-processing apparatus according to the present embodiment;
3 is an operation explanatory diagram of a saddle stitch mechanism unit in FIG. 2; FIG.
FIG. 4 is a diagram showing the operation of the mechanism unit of FIG. 3 in more detail.
FIG. 5 is a diagram illustrating a schematic configuration of a mechanism unit that performs sheet folding processing of the sheet post-processing apparatus according to the present embodiment;
6 is a perspective view showing a positional relationship between a folding plate and a folding roller in FIG. 5. FIG.
FIG. 7 is an operation explanatory diagram illustrating an operation when a sheet bundle is folded and discharged by a folding plate.
FIG. 8 is an operation explanatory diagram illustrating a folding position and a folding operation when a sheet bundle is folded by a folding plate.
FIG. 9 is a perspective view illustrating a folding position when a sheet bundle is folded by a folding plate.
FIG. 10 is a diagram illustrating a state in which the folding plate is folded together with the sheet bundle to advance deeper from the nip of the folding roller.
FIG. 11 is a diagram illustrating a state in which a paper discharge guide plate is closed and a folding operation is started by sandwiching the vicinity of the front end of a sheet bundle.
FIG. 12 is a diagram illustrating a state where the leading end of the sheet bundle is fixed and the folding plate presses the needle position of the sheet bundle in the direction of the opposing folding roller to perform folding processing on the center of the sheet.
FIG. 13 is a diagram showing inconveniences when there are two convex portions at the front end of the folding plate.
FIG. 14 is a block diagram illustrating a schematic configuration of a sheet processing system including a sheet post-processing apparatus according to the present embodiment.
FIG. 15 is a diagram illustrating a display state of an operation unit through which a user inputs saddle stitching and center folding processing;
FIG. 16 is a flowchart showing the processing contents of a process in which saddle stitching is not performed in the saddle stitching & center folding mode;
FIG. 17 is a flowchart showing the processing contents when the output per copy is one in the middle folding only mode.
FIG. 18 is a flowchart illustrating processing contents when the output per copy is one sheet in the saddle stitching & folding mode.
FIG. 19 is a flowchart illustrating processing contents for sheets having the same image configuration in a mode of only folding.
FIG. 20 is a flowchart showing the processing contents of processing performed in accordance with the same image configuration and the number of foldable sheets in only the middle folding mode.
FIG. 21 is a flowchart showing the processing contents of processing performed according to the number of processed sheets in the saddle stitching & center folding mode.
FIG. 22 is a flowchart showing the processing contents of processing performed in accordance with the two prescribed processing numbers in the saddle stitching & center folding mode.
FIG. 23 is a flowchart illustrating processing contents of processing performed according to the number of processing copies in a mode including half-fold processing.
24 is a diagram showing an example of a display that displays a warning to the user when the number of copies to be processed exceeds the specified number in the process of FIG.
FIG. 25 is a diagram illustrating processing contents of processing corresponding to the stacking amount of the stacking tray in the saddle stitching mode.
FIG. 26 is a diagram illustrating a state in which a plurality of paper groups having the same image configuration are output with different image formation directions.
[Explanation of symbols]
1 Paper output device (copier)
2 Paper post-processing equipment
10 Control unit
11 Display
12 Operation unit
13 Paper output controller
20 Control unit
21 Saddle stitching
22 Folding part
23 Folding roller
24 Folding plate

Claims (24)

A folding unit, in the sheet processing apparatus having a control means for controlling the means folding during the previous SL according to the mode information sent from the paper output device side, and
A paper processing apparatus , further comprising a punching means for punching paper, wherein the control means prohibits a punching operation by the punching means when a half-folding mode is designated . In a sheet processing apparatus comprising: a saddle stitching means; a saddle folding means; and a control means for controlling the saddle stitching means and the saddle folding means in accordance with mode information sent from the paper output device side.
The punching means for punching paper is further provided, and the control means prohibits punching operation by the punching means when any one of the saddle stitching mode, the saddle stitching mode and the saddle stitching / saddle folding mode is designated. A paper processing apparatus. In a paper processing apparatus comprising saddle stitching means and control means for controlling the saddle stitching means in accordance with mode information sent from the paper output device side,
A paper processing apparatus , further comprising punching means for punching paper, wherein the control means prohibits punching operation by the punching means when the saddle stitching mode is designated . In a paper processing apparatus comprising: a center folding means; and a control means for controlling the center folding means in accordance with mode information sent from the paper output device side.
When it is determined that the number of sheets is one per number of copies when the middle folding mode is instructed , the control unit collects all the sheets in the middle folding mode and then collectively performs the middle folding. sheet processing apparatus for you, characterized in that to perform the folded operation by means. In a sheet processing apparatus comprising: a saddle stitching means; a saddle folding means; and a control means for controlling the saddle stitching means and the saddle folding means in accordance with mode information sent from the paper output device side.
When the control unit determines that the number of sheets is one per copy when the saddle stitching / center folding mode is instructed, the control unit collects all sheets without executing the binding operation by the saddle stitching unit. after, paper processing device for you, characterized in that to perform the folded operation by means folding in the collectively. In a paper processing apparatus comprising: a center folding means; and a control means for controlling the center folding means in accordance with mode information sent from the paper output device side.
When the half-folding mode is instructed , the control unit collects all output sheet groups having the same image configuration for a plurality of output sheet groups having the same image configuration , and then collectively 2 sheet processing apparatus for you, characterized in that to perform the folding operation. In a paper processing apparatus comprising: a center folding means; and a control means for controlling the center folding means in accordance with mode information sent from the paper output device side.
The control means determines whether or not the sheet bundle to be processed is within the range of foldable sheets if only the output sheet group having the same image configuration is output when the middle folding mode is instructed . that for the sheet processing apparatus. If the result of the determination exceeds the foldable sheet number range, the sheet folding is once folded by the middle folding means within the foldable sheet number, and then set for the output sheet group having the same image configuration. 8. The sheet processing apparatus according to claim 7, wherein the processing is continued . In a sheet processing apparatus comprising: a saddle stitching means; a saddle folding means; and a control means for controlling the saddle stitching means and the saddle folding means in accordance with mode information sent from the paper output device side.
Wherein, when the saddle stitch-folding mode is instructed, the process number is sheet processing apparatus for you, wherein the determining whether the range of preset prescribed number of sheets. 10. The sheet processing apparatus according to claim 9 , wherein when the determination result exceeds the prescribed number, the binding operation by the saddle stitching unit and the two-folding operation by the middle folding unit are prohibited . Sheet processing apparatus according to claim 9 or 10, wherein the predetermined number is set to the maximum number of stapled sheets. In a sheet processing apparatus comprising: a saddle stitching means; a saddle folding means; and a control means for controlling the saddle stitching means and the saddle folding means in accordance with mode information sent from the paper output device side.
The control means determines whether the number of sheets to be processed is within a preset first specified number of sheets when the saddle stitching / center folding mode is instructed. the first sheet processing apparatus for you, wherein the determining whether the range of the second predetermined number of small preset than the stipulated number. Wherein if the number of processing sheets exceeds the range of the first predetermined number, according to claim 1 2, wherein the prohibiting Folded operation by stapling operation and the in-folding unit by the saddle stitching unit Paper processing device. 14. The sheet processing apparatus according to claim 12, wherein the first specified number is a foldable number . Wherein said control means is a range processed number of the first predetermined number, when it exceeds the second predetermined number, according to claim 12, characterized in that prohibiting stapling operation by the saddle stitching unit Paper processing equipment. 16. The sheet processing apparatus according to claim 12, wherein the second specified number is the number of sheets that can be bound . 7. The control unit according to claim 1 , wherein when the half-folding operation is performed by the half-folding unit, the number of processing copies is determined to be within a preset number of processing copies. , 7, 9 and 12. The paper processing apparatus according to any one of the above. 18. The sheet processing apparatus according to claim 17 , wherein when the determination result is within the range of the number of processing copies, a folding operation by the half-folding unit is executed . In a paper processing apparatus comprising saddle stitching means and control means for controlling the saddle stitching means in accordance with mode information sent from the paper output device side,
When the saddle stitching mode is instructed , the control means determines whether or not the stacking amount of the tray on which the discharged sheet bundle is stacked is within the range of the maximum stacking amount set in advance with respect to the tray. when it exceeds the range of the amount, further, it characterized by determining a possible loading assimilated into other trays, to the discharge destination of the loading if the sheet bundle is discharged by switching to the other tray side the paper processing apparatus. Before SL control means, said long another tray is impossible stacking, sheet processing apparatus according to claim 19, wherein the suspend operation. A paper processing apparatus according to claim 17 or 18 ,
A paper output device comprising second control means for receiving control information from the first control means provided on the paper processing apparatus side and transmitting control information to the first control means;
In a paper processing system consisting of
When the number of preset processing copies is exceeded, a warning is given to that effect, and display selection means for selecting a subsequent operation of the sheet processing apparatus is provided on the sheet output apparatus side. Paper handling system. A sheet processing apparatus according to claim 6 ;
Control information is received from image forming means for forming an image based on input image data and first control means provided on the paper processing apparatus side, and control information is transmitted to the first control means. An image forming apparatus provided with a second control means,
In an image forming system comprising:
The second control unit controls the image forming unit to output an image so that adjacent groups among the plurality of groups having the same image configuration have different image forming directions. system. Control information is received from the sheet processing apparatus having the center folding function, the image forming means for forming an image based on the input image data, and the first control means provided on the sheet processing apparatus side and the first An image forming apparatus including a second control unit that transmits control information to the control control unit.
If the medium on which an image is formed by said image forming means one of the OHP sheet and cardboard, said second control means transmits to that effect the first control means, first control means folded into An image forming system for prohibiting a folding operation by means. The control unit receives the control information from the sheet processing apparatus having the saddle stitching function, the image forming unit that forms an image based on the input image data, and the first control unit provided on the sheet processing apparatus side, and An image forming system comprising: an image forming apparatus including a second control unit that transmits control information to the first control control unit;
When the medium on which the image is formed by the image forming means is either an OHP sheet or cardboard, the second control means sends a message to that effect to the first control means, and the first control means An image forming system, wherein a binding operation by a binding unit is prohibited.

Images