Sheet processing apparatus, image forming system, and program

Abstract

To improve sheet processing accuracy.SOLUTION: A sheet processing apparatus 20 comprises: a sheet processing unit (cutting device 30) that performs sheet processing on a sheet to be conveyed along a width direction orthogonal to a conveyance direction; a conveying unit (sheet conveying unit 25) that can convey the sheet to the sheet processing unit; and a control unit (CPU 21) that controls the sheet processing unit and the conveying unit. The control unit (CPU 21) executes a warm-up operation of the conveying unit for a longer time than the warm-up time of the sheet processing unit and / or the warm-up time of an image forming apparatus connectable to the sheet processing apparatus.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a paper processing apparatus, an image forming system, and a program. [Background technology]

[0002] Conventionally, there is known a paper processing apparatus that conveys a paper sheet by a conveying roller and performs a predetermined process on the paper sheet. For example, a paper processing apparatus includes a cutting device that cuts the paper sheet at a cutting position. The cutting device is required to have high cutting accuracy so as to cut the paper sheet accurately at the cutting position.

[0003] Therefore, as a technique for improving cutting accuracy, Patent Document 1 describes a technique for cutting based on a cut mark on the paper. Specifically, when cutting the paper in a direction perpendicular to the conveying direction, the movement distance from the leading edge of the paper to the position of the cut mark is counted, and the paper is stopped at a predetermined timing for cutting. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-232700 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the conveyor belt that conveys the paper and the rollers that drive the conveyor belt expand and contract with temperature changes, which causes changes in the roller diameter, belt length, belt tension, etc., and can cause the conveying speed of the paper on the conveyor belt to become unstable. Therefore, even if a cut mark is provided, the distance from the detection of the cut mark to the cutting position may vary depending on the transport of the paper, and the paper may not be stopped accurately at the cutting position, resulting in variation in the cutting position.

[0006] SUMMARY OF THE PRESENT EMBODIMENT It is therefore an object of the present invention to improve paper processing accuracy. [Means for solving the problem]

[0007] In order to solve the above problems, the paper processing device according to the present invention comprises: a paper processing section that processes the paper in a width direction perpendicular to the conveying direction of the conveyed paper; a conveying unit capable of conveying the sheet to the paper processing unit; A control unit that controls the paper processing unit and the transport unit; Equipped with The control unit executes the warm-up operation of the transport unit for a time longer than a warm-up time of the paper processing unit or a warm-up time of an image forming device connectable to the paper processing apparatus.

[0008] Further, the image forming system according to the present invention comprises: A paper processing device including a paper processing section that processes a paper along a width direction perpendicular to a conveying direction of the conveyed paper, and a conveying section that can convey the sheet to the paper processing section; an image forming apparatus including an image forming unit that forms an image on the sheet; a control unit that controls the paper processing unit, the conveying unit, and the image forming unit; Including, The control unit executes the warm-up operation of the transport unit for a time longer than a warm-up time of the paper processing unit or a warm-up time of an image forming device connectable to the paper processing apparatus.

[0009] In addition, the program according to the present invention is a paper processing section that processes the paper in a width direction perpendicular to the conveying direction of the conveyed paper; a conveying unit capable of conveying the paper to the paper processing unit, The controller functions to execute the warm-up operation of the transport unit for a time longer than the warm-up time of the paper processing unit and / or the warm-up time of an image forming device connectable to the paper processing apparatus. Effect of the Invention

[0010] According to the present invention, the paper processing accuracy can be improved. [Brief description of the drawings]

[0011] [Figure 1] 1 is a configuration diagram of an image forming system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram showing a functional configuration of the image forming system. [Diagram 3] 13 is a diagram showing the relationship between the warm-up time of the paper transport unit, the amount of transport deviation, and the temperature inside the machine. [Figure 4] 13 is a flowchart of a process for determining a warm-up time for a paper transport unit. FIG. [Diagram 5] FIG. 13 is an image diagram of a cutting accuracy input screen. [Figure 6] FIG. 13 is a table showing warm-up times for the paper transport unit. [Figure 7] FIG. 4 is a flow diagram of a warm-up process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings, however, the scope of the present invention is not limited to the illustrated examples. [Image formation system overview] First, the configuration of an image forming system 100 will be described with reference to FIGS. Fig. 1 is a configuration diagram of an image forming system 100 according to an embodiment of the present invention. Fig. 2 is a block diagram showing the functional configuration of the image forming system 100. The image forming system 100 is configured to include an image forming device 10 that performs image formation processing on paper P, and a paper processing device 20 that performs paper processing on the paper P on which an image has been formed by the image forming device 10. The paper processing includes cutting processing, creasing processing, perforation forming processing, and the like. In the following, a case will be described in which the paper processing is cutting processing.

[0013] [Image forming device] The image forming apparatus 10 forms an image on a sheet P in accordance with an image formation instruction received from a PC (Personal Computer) or the like via a communication network. The image forming apparatus 10 conveys the sheet P on which the image has been formed to the sheet processing apparatus 20. The image forming apparatus 10 includes a CPU 11, a ROM (Read Only Memory) 12, a RAM (Random Access Unit) 13, a memory unit 14, a paper feeding unit 15, an image reading unit 16, an image forming unit 17, a paper inversion unit 18, an operation display unit 19, a communication I / F (InterFace) 19, etc.

[0014] The CPU 11 reads out a program stored in the ROM 12, loads it into the RAM 13, and controls the operation of each part of the image forming apparatus 10 in cooperation with the loaded program. The ROM 12 is configured from a non-volatile semiconductor memory or the like, and stores the system program, various processing programs that can be executed on the system program, various data, and the like. The RAM 13 is configured from a volatile semiconductor memory or the like, and forms a work area for temporarily storing programs read from the ROM 12, input or output data, parameters, and the like during various processes executed by the CPU 11.

[0015] The storage unit 14 is configured with a HDD (Hard Disk Drive), a non-volatile semiconductor memory, etc., and stores various data.

[0016] The paper feed unit 15 has multiple paper feed trays T1 to T3 that can store paper P of different sizes, types (paper grades), basis weights, etc., and supplies the paper P stored in the specified paper feed tray T1 to T3 to the image forming unit 17.

[0017] The image reading unit 16 reads an original document and generates image data. Specifically, the image reading unit 16 reads light that is irradiated from a light source and reflected by the original document using a CCD (Charge Coupled Device) image sensor or the like.

[0018] The image forming unit 17 forms an image on the paper P. The image forming unit 17 charges a photoconductor in a charging unit, exposes and scans the photoconductor with a laser beam emitted from an exposure unit based on image data to form an electrostatic latent image, develops the electrostatic latent image with toner in a developing unit, transfers the toner image to the paper P in a transfer unit, and fixes the toner image to the paper P in a fixing unit (fixing device).

[0019] The paper inverting section 18 inverts the paper that has passed through the image forming section 17, and conveys it to the image forming section 17 again.

[0020] The operation display unit 19 includes a display unit configured with an LCD (Liquid Crystal Display) that displays various screens, and an operation unit configured with a touch panel and various keys stacked on the display unit. The operation display unit 19 outputs operation signals input by touch operations or key operations to the CPU (Central Processing Unit) 11 (see FIG. 2).

[0021] The communication I / F 110 is composed of a NIC (Network Interface Card), a modem, etc., and transmits and receives data to and from the paper-sheet processing apparatus 20 and a PC (Personal Computer).

[0022] [Paper handling device] The paper processing device 20 is a cutter that performs cutting processing on the paper P. The paper processing device 20 performs cutting processing on the paper P carried in from the image forming device 10 as necessary, and discharges the product created by the cutting processing onto the paper output tray T11, T12 or the card tray T13. The paper processing device 20 includes a CPU 21, a ROM 22, a RAM 23, a memory unit 24, a paper transport unit 25, a setting input unit 26, a sensor 27, a communication I / F 28, a cutting device 30 as a paper processing unit, a leading edge detection unit 36, and the like.

[0023] The CPU 21, the ROM 22, and the RAM 23 are similar to the CPU 11, the ROM 12, and the RAM 13, except that the object controlled by the CPU 21 is the paper-sheet processing apparatus 20. The CPU 21 functions as a control unit that controls the cutting device 30 and the paper transport unit 25 . The CPU 21 functions as a time acquisition unit that acquires the current time. The CPU 21 functions as a stop time calculation unit that calculates the machine stop time from the time when the power was last turned off and the time when the power was last turned on.

[0024] The storage unit 24 is configured with a HDD, a non-volatile semiconductor memory, etc., and stores various data. The storage unit 24 stores the warm-up time of the paper transport unit 25, etc.

[0025] The paper transport section 25 is composed of multiple transport rollers 35 arranged along the transport paths D1 and D2, and transports the paper P brought in from the image forming device 10 until it is discharged onto the paper output trays T11 and T12 or the card tray T13. The paper transport section 25 functions as a transport section, and is composed of components including at least one of a transport roller and a transport belt.

[0026] A long paper transport path D2 is provided adjacent to the transport path D1, branching off from the transport path D1 and joining the transport path D1 downstream. The long paper transport path D2 is used as a buffer when transporting the long paper. The transport rollers 35 are a pair of rollers arranged at a specified interval along the transport paths D1 and D2 to sandwich the paper P from the front and back. The paper P is transported by the rotation of the transport rollers 35. The transport paths D1 and D2 may be provided with a transport belt on which the paper P is placed and transported. A drive motor for driving the transport rollers 35 and the transport belt is connected to the transport rollers 35 and the transport belt. The transport rollers 35 and the transport belt are driven by the operation of the drive motor.

[0027] The setting input unit 26 includes a display unit configured with an LCD for displaying various screens, and an operation unit configured with a touch panel and various keys stacked on the display unit. The setting input unit 26 outputs operation signals input by touch operations or key operations to the CPU 21. The setting input unit 26 functions as an input unit that can input at least one of information related to the warm-up time and paper processing accuracy. The paper processing accuracy includes cutting accuracy, crease accuracy, perforation accuracy, and the like.

[0028] The communication I / F 28 is composed of a NIC, a modem, and the like, and transmits and receives data to and from the image forming apparatus 10 .

[0029] The cutting device 30 performs a cutting process to cut the transported paper P. The cutting device 30 includes FD cutting units 31 to 33 and a CD cutting unit 34 at a plurality of positions on the transport path D1 of the paper P. The FD cutting units 31 to 33 are slitters that cut the paper P along the feed direction F. The FD cutting units 31 and 32 are top and bottom slitters that cut the ends (rear and front sides) of the paper P in a direction C that is parallel to the plane of the paper P and perpendicular to the feed direction F (referred to as the "transport perpendicular direction"). The FD cutting unit 33 is a gutter cut slitter that cuts the margins between adjacent products in the transport perpendicular direction C of the paper P along the feed direction F. The FD cutting units 31 to 33 are each equipped with an actuator such as a motor (not shown) and can adjust the cutting position within a specified range in the conveyance orthogonal direction C. This allows the paper P to be cut along the conveyance direction F at positions that are a specified distance from both ends of the paper P in the conveyance orthogonal direction C. The CD cutting unit 34 is a guillotine cutter that cuts the sheet P along the conveyance orthogonal direction C. The CD cutting unit 34 can arbitrarily adjust the cutting position in the conveyance direction F of the sheet P in cooperation with the conveyance roller 35.

[0030] The leading edge detection unit 36 ​​is provided at a position on the upstream side (hereinafter also referred to as the rear side) of the cutting device 30 in the conveying direction on the conveying path D1, immediately before the cutting device 30. This leading edge detection unit 36 ​​is a sensor that detects the end (leading edge) of the conveyed paper P on the downstream side (hereinafter also referred to as the front side) in the conveying direction. For example, any sensor capable of detecting the passage of the leading edge of the paper P can be used. Examples include a photointerrupter that optically detects the leading edge, or a microswitch that detects by contact. The CPU 21 reads the driving rotation number and driving time of each transport roller 35 after the leading edge of the paper P is detected by the leading edge detection unit 36, and can recognize where on the transport path D1 the leading edge of the paper P is located. Then, the CPU 21 controls the cutting units 31-34 of the cutting device 30 to cut the transported paper P at an appropriate timing.

[0031] Although the cutting device 30 has been described above as an example of the paper processing section, the paper processing section is not limited to this. The paper processing section may be a crease device or a perforation forming device.

[0032] The sensor 27 can detect the temperature at a predetermined location in the machine and functions as a temperature detection unit. For example, the sensor 27 may detect the temperature of the conveying roller 35A immediately before the cutting device 30.

[0033] The waste box 29 is installed below the cutting device 30, and stores cutting waste generated during the cutting operation by the cutting device 30 and dropping from the cutting device 30. The user opens the door of the paper processing device 20, removes the waste box 29, and discards the cutting waste in the waste box 29.

[0034] In the above, the paper processing section has been described using the cutting device 30, but the paper processing section may also be a crease device or a perforation forming device. The crease device is configured to include a crease section and the like. The crease section is used to make a crease in the paper. The crease is used, for example, in the corners of the spine of the paper or in the gutter of a cover in a case binding. The crease section is configured to be able to crease the paper at least along the width direction perpendicular to the conveying direction. The perforation forming device is configured to include a perforation forming unit, etc. The perforation forming unit performs a process of forming perforations in the paper and has a perforation blade. The perforation forming unit is configured to be able to form perforations in the paper at least along the width direction perpendicular to the conveying direction.

[0035] [Warm-up operation] Before the image forming process in the image forming apparatus 10 or the paper processing in the paper processing apparatus 20 starts, a warm-up operation is performed. The warm-up operation includes a warm-up operation for the image forming apparatus 10, a warm-up operation for the cutting device 30 which is a paper processing section in the paper processing apparatus 20, and a warm-up operation for the paper transport section 25. The warm-up operation in the image forming apparatus 10 includes initial operations such as a temperature adjustment operation (warm-up operation for the fixing unit) for raising or lowering the temperature of the fixing unit of the image forming unit 17 to a desired temperature, and an image stabilization operation for image adjustment. The warm-up operation of the cutting device 30 in the paper processing device 20 includes initial operations such as a cutter position adjustment operation to move the cutter to a home position. The warm-up operation of the crease device in the paper processing device 20 includes initial operations such as a crease unit position adjustment operation. The warm-up operation of the perforation forming device in the paper processing device 20 includes initial operations such as a perforation forming unit position adjustment operation. The warm-up operation in the paper transport unit 25 is performed by driving the drive motor. The drive motor may be driven at a constant speed for a predetermined time, or may be driven repeatedly with stops at predetermined time intervals. In the latter case, the amount of heat generated increases due to inrush current at start-up and regenerative energy generated at stop, so the paper transport unit 25 is warmed up efficiently. In addition, the drive speed during warm-up should be faster than that during normal paper transport, because the higher the speed, the greater the power input to the drive motor and the greater the amount of heat generated.

[0036] [Setting the warm-up time for the paper transport unit] The following describes how to set the warm-up time for paper transport section 25. The warm-up operation for paper transport section 25 needs to be performed for a predetermined time until the conditions of paper transport section 25, such as the roller diameter of transport roller 35, the belt length of the transport belt, and the belt tension, are stabilized. Specifically, the warm-up time of paper transport section 25 needs to be set longer than the warm-up operation of image forming apparatus 10 and / or the warm-up operation of cutting device 30. By setting it in this way, the state of paper transport section 25 becomes substantially stable, improving the transport accuracy and paper processing accuracy. Furthermore, if the warm-up time for paper transport section 25 is at least twice as long as the warm-up time for image forming apparatus 10, the state of paper transport section 25 becomes more stable, improving transport accuracy and paper processing accuracy.

[0037] The warm-up time of the paper transport section 25 may be set using experimental data such as that shown in FIG. Fig. 3 is a diagram showing the warm-up time of paper transport section 25, the temperature of paper transport section 25 detected by sensor 27, and the amount of transport deviation of paper transport section 25. In Fig. 3, the temperature of paper transport section 25 is indicated by a solid line, and the amount of transport deviation of paper transport section 25 is indicated by a dashed line. The amount of transport deviation of paper transport section 25 is the amount of deviation from the planned transport distance of paper P. As shown by the dashed line in Fig. 3, the conveyance deviation amount changes around the first inflection point C1 where the warm-up time is 10 minutes. Therefore, if the warm-up time is 10 minutes or more, the state of paper conveying section 25 is approximately stable, improving conveyance accuracy and paper processing accuracy. In this way, it is possible to improve paper processing accuracy while shortening the warm-up time as much as possible. 3, the degree of change in the conveyance deviation amount changes significantly before and after the second inflection point C2 where the warm-up time is 20 minutes. In other words, if the warm-up time is 20 minutes or more, the state of paper conveying section 25 becomes more stable, improving conveyance accuracy and paper processing accuracy. 3, the conveyance deviation amount becomes substantially constant after the third inflection point C3 where the warm-up time is 30 minutes. In other words, if the warm-up time is 30 minutes or more, the state of paper conveying section 25 becomes more stable, improving conveyance accuracy and maximizing paper processing accuracy.

[0038] 4, 5, and 6, the warm-up time of the paper transport unit 25 may be set to a value corresponding to the cutting accuracy. FIG. 4 is a diagram showing a flow of a warm-up time determination process executed by the CPU 21. First, the CPU 21 acquires the cutting accuracy input from the setting input unit 26 (step S1).

[0039] Here, an example of a method for a user to input cutting accuracy using the setting input unit 26 will be described with reference to Fig. 5. Fig. 5 is an image diagram of a cutting accuracy input screen O1 displayed on the display unit of the setting input unit 26. The user can display options for the cutting accuracy by pressing the pull-down PD, and input the cutting accuracy by pressing a displayed option. In this way, the cutting accuracy of the sheet-processing device 20 can be set as desired.

[0040] 5 on the operation display unit 19 via the communication I / F 28. The user may input the cutting accuracy using the cutting accuracy input screen O1 displayed on the operation display unit 19 at the same time as setting the job. In this way, the cutting accuracy can be arbitrarily set for each job. Although a pull-down PD has been used as an example in the above, the present invention is not limited to this and various user interfaces may be used.

[0041] Next, CPU 21 determines the warm-up time for paper transport unit 25 (step S2), and ends the warm-up time determination process.

[0042] Here, an example of a method for determining the warm-up time by the CPU 21 will be described with reference to FIG. 6. FIG. 6 shows the warm-up time (WUP time) for cutting accuracy expressed in four stages: none, low, medium, and high. For example, when the cutting accuracy input in step S1 is "high," the CPU 21 determines the warm-up time to be "30 minutes." In this way, the warm-up time of the paper transport unit 25 becomes variable, and an appropriate time can be set according to the user's needs.

[0043] [Warm-up process flow] 7, a flow of the warm-up process executed by the CPU 21 will be described. The warm-up process is started, for example, when the CPU 21 acquires job information. The job information may also include cutting accuracy.

[0044] First, the CPU 21 starts a warm-up operation in the cutting device 30 and a warm-up operation in the image forming apparatus 10 (step S11).

[0045] Next, CPU 21 determines whether a warm-up operation is necessary for paper transport unit 25 (step S12). If CPU 21 determines that a warm-up operation is necessary (step S12; YES), CPU 21 advances the warm-up process to step S13. If CPU 21 determines that a warm-up operation is not necessary (step S12; NO), CPU 21 advances the warm-up process to step S17.

[0046] Here, the determination method in step S12 will be described. For example, the CPU 21 may obtain the temperature inside the machine from the sensor 27 serving as a temperature detection unit, and if the temperature inside the machine is below a predetermined temperature, perform a warm-up operation of the paper transport unit 25, and if the temperature inside the machine is equal to or higher than the predetermined temperature, may not perform the warm-up operation of the paper transport unit 25. Here, if the sensor 27 is arranged so as to detect the temperature of the transport roller 35A immediately before the CD cutting section 34, the CPU 21 can more effectively determine whether or not the cutting is necessary. Also, for example, if the time that has elapsed since the power was turned off is short, the CPU 21 can infer that the roller diameter has not expanded or contracted. Therefore, the CPU 21 may calculate the elapsed time from the current time (when the power was turned on) and the time when the power was turned off last time, and may not perform the warm-up operation of the paper transport unit 25 if the elapsed time is less than a predetermined time. In this way, unnecessary warm-up operations can be reduced.

[0047] Next, the CPU 21 determines the warm-up time of the paper transport unit 25 (step S13). The CPU 21 sets the warm-up time of the paper transport unit 25 to a time longer than the warm-up operation of the image forming apparatus 10 or the warm-up operation of the paper processing device 20. For example, when the warm-up time of paper transport unit 25 is set in advance, CPU 21 obtains the warm-up time of paper transport unit 25 from storage unit 24 and determines it. Furthermore, for example, when the job information includes cutting accuracy, the CPU 21 executes the above-described warm-up time determination process and determines the warm-up time for the paper transport unit 25.

[0048] Next, CPU 21 starts a warm-up operation of paper transport unit 25 (step S14).

[0049] Next, when the warm-up operations of the cutting device 30 and the image forming device 10 are completed, the CPU 21 advances the warm-up process to step S16 (step S15; YES). If the warm-up operations of the cutting device 30 and the image forming device 10 are not completed, the CPU 21 advances the warm-up process to step S15 again (step S15; NO).

[0050] Next, when the warm-up operation of the paper transport unit 25 is completed, the CPU 21 advances the warm-up process to step S16 (step S15; YES), and ends the warm-up process. Then, the paper processing device or the image forming system transitions to a standby state in which a job can be executed. If the warm-up operation of paper transport unit 25 is not completed, CPU 21 advances the warm-up process to step S15 again (step S15; NO). In step S17, if the warm-up operations of the cutting device 30 and the image forming device 10 are completed, the CPU 21 ends the warm-up process (step S17; YES). If the warm-up operations of the cutting device 30 and the image forming device 10 are not completed, the CPU 21 advances the warm-up process to step S17 again (step S17; NO).

[0051] [effect] As described above, the paper processing device 20 includes a paper processing unit (cutting device 30) that processes the transported paper along the width direction perpendicular to the transport direction, a transport unit (paper transport unit 25) that can transport the paper to the paper processing unit, and a control unit (CPU 21) that controls the paper processing unit and the transport unit. The control unit (CPU 21) executes the warm-up operation of the transport unit for a time longer than the warm-up time of the paper processing unit and / or the warm-up time of an image forming device that can be connected to the paper processing apparatus. Therefore, the conditions of the paper transport section 25, such as the roller diameter of the transport roller 35, the belt length of the transport belt, and the belt tension, are stabilized, and the paper processing accuracy is improved.

[0052] [others] The above-described embodiments are merely examples of the paper processing device and image forming system according to the present invention, and the present invention is not limited to these. The detailed configurations and operations of the components constituting the device may be modified as appropriate without departing from the spirit of the present invention.

[0053] In addition, the CPU 21, ROM 22, RAM 23, memory unit 24, and setting input unit 26 of the above-mentioned paper processing device 20 may be shared with the CPU 11, ROM 12, RAM 13, memory unit 14, and operation display unit 19 of the image forming device 10, and this shared configuration may be used to execute processing for setting various parameters related to cutting of the paper processing device 20.

[0054] Furthermore, an external information processing terminal such as a personal computer may be connected to the image forming apparatus 10 or the paper processing apparatus 20, and the information processing terminal may perform the processes performed by the CPU 21 of the paper processing apparatus 20. Furthermore, various cutting parameters may be inputted through an input interface such as a keyboard or mouse provided on the information processing terminal such as a personal computer. In this case, a configuration including an information processing terminal such as a personal computer may be regarded as an image forming system.

[0055] Furthermore, in each of the above embodiments, a paper sheet P is used as the sheet, but the material of the sheet is not limited to paper, and may be sheet-shaped resin or the like. [Explanation of symbols]

[0056] 10 Image forming device 11 CPU 14 Storage section 17 Image forming section 18 Paper reversing section 19 Operation display section (input section) 20 Paper handling device 21 CPU (control unit, time acquisition unit, stop time calculation unit) 24 Memory section 25 Paper transport section (transport section) 26 Setting input section (input section) 27 Sensor (temperature detection part) 29 Waste bin 30 Cutting device (paper processing section) 31~33 FD cutting section 34 CD cutting section 35 Transport roller 36 Tip detection section 100 Image forming system

Claims

1. a paper processing section that processes the paper in a width direction perpendicular to the conveying direction of the conveyed paper; a conveying unit capable of conveying the paper to the paper processing unit; A control unit that controls the paper processing unit and the transport unit; A paper processing device comprising: The control unit executes the warm-up operation of the transport unit for a time longer than a warm-up time of the paper processing unit and / or a warm-up time of an image forming device connectable to the paper processing unit.

2. 2. The paper processing device of claim 1, wherein the paper processing section includes at least one of a cutting section capable of cutting the paper along a width direction perpendicular to the transport direction, a crease section capable of creasing the paper along the width direction perpendicular to the transport direction, and a perforation forming section capable of forming perforations in the paper along the width direction perpendicular to the transport direction.

3. 3. The paper processing apparatus according to claim 2, wherein the warm-up operation of the paper processing section includes a position adjustment operation in at least one of the cutting section, the crease section, and the perforation forming section.

4. 2. The sheet processing apparatus according to claim 1, wherein the warm-up operation of the image forming apparatus includes a warm-up operation or an image stabilization operation of a fixing unit provided in the image forming apparatus.

5. The paper processing apparatus according to claim 1 , wherein the transport section includes at least one of a transport roller and a transport belt.

6. The sheet processing apparatus according to claim 1 , wherein the warm-up operation of the transport unit is an operation for driving the transport unit.

7. 2. The sheet processing apparatus according to claim 1, wherein the warm-up operation of the transport unit is an operation of repeatedly driving and stopping the transport unit.

8. 8. The paper processing apparatus according to claim 6, wherein the driving speed of said transport section during the warm-up operation is faster than the driving speed when transporting the paper.

9. Equipped with a temperature detector capable of detecting the temperature inside the aircraft, The sheet processing apparatus according to claim 1 , wherein the control unit performs a warm-up operation for the transport unit when the internal temperature detected by the temperature detection unit is equal to or lower than a predetermined temperature when the power is turned on.

10. A time acquisition unit for acquiring a current time; a stop time calculation unit that calculates a machine stop time based on the time when the power was last turned off and the time when the power was last turned on; Equipped with The sheet processing apparatus according to claim 1 , wherein the control unit performs a warm-up operation for the transport unit when the machine stop time calculated by the stop time calculation unit is equal to or longer than a predetermined time.

11. 2. The paper processing apparatus according to claim 1, wherein the warm-up time of the transport section is 30 minutes or more.

12. 2. The paper processing apparatus according to claim 1, wherein the warm-up time of the transport section is 20 minutes or more.

13. 2. The paper processing apparatus according to claim 1, wherein the warm-up time of the transport section is at least twice as long as the warm-up time of the image forming apparatus.

14. an input unit capable of inputting at least one of information relating to a warm-up operation time of the conveying unit and information relating to paper processing accuracy; 2. The sheet processing apparatus according to claim 1, wherein the warm-up operation time of said transport section is determined based on input information inputted by said input section.

15. an image forming apparatus including an image forming unit that forms an image on a sheet; a sheet processing device according to claim 1, which processes the sheet on which the image is formed by the image forming device; An image forming system comprising:

16. a paper processing section that processes the paper in a width direction perpendicular to the conveying direction of the conveyed paper; a conveying unit capable of conveying the paper to the paper processing unit, A program that functions as a control unit to execute a warm-up operation of the transport unit for a time longer than a warm-up time of the paper processing unit and / or a warm-up time of an image forming device that can be connected to the paper processing apparatus.

Images