JP7400420B2 - Post-processing equipment and image forming system - Google Patents

Description

The present invention relates to a post-processing device and an image forming system that cut sheets.

2. Description of the Related Art Post-processing devices are known that cut the outer edge of a sheet printed by an image forming apparatus or cut it to a desired size.
Some of these post-processing devices allow the user to set the amount of cutting at the leading edge and trailing edge in the transport direction by inputting keys on the operating unit in order to cut the desired size. (For example, see Patent Document 1).
Additionally, if the cutting amount at the leading end of the sheet is less than the required length, poor conveyance or cutting will occur.Therefore, there are known post-processing devices that predetermine the minimum cutting amount when cutting (for example, (See Patent Document 2).

Japanese Patent Application Publication No. 10-6605 Japanese Patent Application Publication No. 2016-137628

However, in the case of the post-processing device of Patent Document 1, if the user sets the cutting amount arbitrarily, there is a risk that poor cutting or poor conveyance may occur depending on the set value.
Furthermore, in the case of the post-processing apparatus of Patent Document 2, simply determining the minimum amount of cutting at the leading edge of the sheet was not sufficient to deal with various problems within the apparatus.

An object of the present invention is to perform more appropriate cutting.

A post-processing device according to the present invention includes a cutting means for cutting a sheet;
A first size in the conveyance direction of the sheet to be cut, a second size in a direction perpendicular to the conveyance direction of the sheet to be cut, and a downstream end of the sheet in the conveyance direction perpendicular to the conveyance direction. a leading end cutting position for cutting in the direction of cutting, a third size in the conveyance direction of the product resulting from cutting, a first side edge cutting position for cutting one end in the direction perpendicular to the conveyance direction in the conveyance direction, and a result of cutting. Setting means for setting a fourth size in a direction perpendicular to the conveying direction of the object;
a first determining unit that determines a trailing edge cutting position for cutting an upstream end of the sheet in a direction perpendicular to the conveying direction from the leading edge cutting position and the third size;
a second determining means for determining, from the first side edge cutting position and the fourth size, a second side edge cutting position at which the other end of the sheet in a direction perpendicular to the conveying direction is cut in the conveying direction;
The upper and lower limits of the leading edge cutting position, the lower limits of the third size, the upper and lower limits of the first side edge cutting position, the lower limits of the fourth size, the upper limit of the trailing edge cutting position, and a storage means for storing in advance a lower limit value, an upper limit value and a lower limit value of the second side edge cutting position as a settable value range;
As a range of settable values, the upper limit value of the third size is calculated from the first size and the tip cutting position, and the upper limit value of the fourth size is calculated from the second size and the first side edge cutting position. a calculation means to
The values of the setting parameters including the leading edge cutting position, the third size, the first side edge cutting position, the fourth size, the trailing edge cutting position, and the second side edge cutting position are the settable values. a means of determining whether the range is within the range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
It is characterized by having the following.

Further, the image forming system according to the present invention includes:
an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
A first size in the conveyance direction of the sheet to be cut, a second size in a direction perpendicular to the conveyance direction of the sheet to be cut, and a downstream end of the sheet in the conveyance direction perpendicular to the conveyance direction. a leading end cutting position for cutting in the direction of cutting, a third size in the conveyance direction of the product resulting from cutting, a first side edge cutting position for cutting one end in the direction perpendicular to the conveyance direction in the conveyance direction, and a result of cutting. Setting means for setting a fourth size in a direction perpendicular to the conveying direction of the object;
a first determining unit that determines a trailing edge cutting position for cutting an upstream end of the sheet in a direction perpendicular to the conveying direction from the leading edge cutting position and the third size;
a second determining means for determining, from the first side edge cutting position and the fourth size, a second side edge cutting position at which the other end of the sheet in a direction perpendicular to the conveying direction is cut in the conveying direction;
The upper and lower limits of the leading edge cutting position, the lower limits of the third size, the upper and lower limits of the first side edge cutting position, the lower limits of the fourth size, the upper limit of the trailing edge cutting position, and a storage means for storing in advance a lower limit value, an upper limit value and a lower limit value of the second side edge cutting position as a settable value range;
As a range of settable values, the upper limit value of the third size is calculated from the first size and the tip cutting position, and the upper limit value of the fourth size is calculated from the second size and the first side edge cutting position. a calculation means to
The values of the setting parameters including the leading edge cutting position, the third size, the first side edge cutting position, the fourth size, the trailing edge cutting position, and the second side edge cutting position are the settable values. a means of determining whether the range is within the range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
It is characterized by having the following.
Further, the image forming system according to the present invention includes:
an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
a discharge port for cutting waste produced by cutting the sheet in a direction perpendicular to the conveyance direction of the sheet by the cutting means;
a first size in the conveyance direction where cutting is performed; a tip cutting position where the downstream end of the sheet in the conveyance direction is cut in a direction perpendicular to the conveyance direction; and a third size of the cut product in the conveyance direction. a setting means for setting the
a first determining unit that determines a trailing edge cutting position for cutting an upstream end of the sheet in a direction perpendicular to the conveying direction from the leading edge cutting position and the third size;
Storage means for storing in advance the upper and lower limits of the leading edge cutting position, the lower limit of the third size, and the upper and lower limits of the trailing edge cutting position as a settable value range;
Calculating means for calculating an upper limit value of the third size as a settable value range from the first size and the tip cutting position;
determining means for determining whether values of setting parameters including the leading edge cutting position, the third size, and the trailing edge cutting position are within the settable value range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
It is characterized by having the following.
Further, the image forming system according to the present invention includes:
an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
a discharge port for cutting waste produced by cutting the sheet in the conveyance direction by the cutting means;
A first side edge cutting position is set for cutting one end in the direction perpendicular to the conveyance direction in the conveyance direction, and a second side edge cutting position is set for cutting the other end in the direction perpendicular to the conveyance direction in the conveyance direction. a setting means for
storage means for storing in advance an upper limit value and a lower limit value of the first side edge cutting position and an upper limit value and a lower limit value of the second side edge cutting position as a settable value range;
determining means for determining whether values of setting parameters including the first side edge cutting position and the second side edge cutting position are both within the settable value range;
It is characterized by having the following.
Further, the image forming system according to the present invention includes:
an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
a discharge port for cutting waste produced by cutting the sheet in the conveyance direction by the cutting means;
a second size in a direction perpendicular to the conveyance direction in which cutting is performed; a first side edge cutting position where one end in the direction perpendicular to the conveyance direction is cut in the conveyance direction; and a cut product in the conveyance direction. a setting means for setting a fourth size in the orthogonal direction;
a second determining means for determining, from the first side edge cutting position and the fourth size, a second side edge cutting position at which the other end of the sheet in a direction perpendicular to the conveying direction is cut in the conveying direction;
a storage means for storing in advance an upper limit value and a lower limit value of the first side edge cutting position, a lower limit value of the fourth size, and an upper limit value and a lower limit value of the second side edge cutting position as a settable value range; ,
Calculation means for calculating an upper limit value of the fourth size from the second size and the first side edge cutting position;
determining means for determining whether values of setting parameters including the first side edge cutting position, the fourth size, and the second side edge cutting position are within the settable value range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
It is characterized by having the following.

According to the present invention, it is possible to provide a post-processing device or an image forming system that performs more appropriate cutting.

1 is a configuration diagram of an image forming system in an embodiment of the present invention. FIG. 1 is a block diagram showing the functional configuration of an image forming system. This is a display example of a settings input screen. FIG. 6 is an explanatory diagram showing parameters related to the cutting position along the direction perpendicular to the conveyance of the paper. FIG. 7 is an explanatory diagram showing parameters related to the cutting position along the paper conveyance direction. This is an example of an error message displayed during processing. This is an example of a highlighted display displayed during processing. 5 is a flowchart showing the processing of the CPU when setting parameters regarding the cutting position. 7 is a flowchart showing other processing by the CPU when setting parameters regarding the cutting position. 7 is a flowchart showing further processing by the CPU when setting parameters related to the cutting position.

[Overview of image forming system]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated example.
FIG. 1 is a configuration diagram of an image forming system 100 in an embodiment of the present invention. The image forming system 100 includes an image forming apparatus 10 as an image forming means that forms an image on a paper P as a sheet, a post-processing apparatus 20 that performs a cutting process on the paper P on which an image has been formed by the image forming apparatus 10, It is configured with.

The image forming apparatus 10 forms an image on the paper P according to an operation instruction input from the operation display section 18 or an image formation instruction received from a PC (Personal Computer) or the like via a communication network. The image forming apparatus 10 carries out the paper P on which the image has been formed to the post-processing apparatus 20 .
The image forming apparatus 10 includes a paper feeding section 15, an image reading section 16, an image forming section 17, an operation display section 18, and the like.

The paper feed unit 15 includes a plurality of paper feed trays T1 to T3 that can accommodate paper P of different sizes, types (paper types), basis weights, etc., and the sheets are stored in designated paper feed trays T1 to T3. The paper P is supplied to the image forming section 17.

The image reading unit 16 reads a document and generates image data. Specifically, the image reading unit 16 uses a CCD (Charge Coupled Device) image sensor or the like to read the reflected light emitted from the light source and reflected by the document.

The image forming section 17 forms an image on the paper P. The image forming section 17 charges the photoconductor with a charging section, exposes and scans the photoconductor with a laser beam emitted by an exposure section based on image data to form an electrostatic latent image, and forms an electrostatic latent image using a developing section. The image is developed with toner, the toner image is transferred onto paper P by a transfer section, and the toner image is fixed onto paper P by a fixing section.

The operation display unit 18 is configured by an LCD (Liquid Crystal Display) and includes a display unit that displays various screens, and an operation unit configured by a touch panel and various keys stacked on the display unit. The operation display section 18 outputs operation signals input by touch operations or key operations to the CPU (Central Processing Unit) 11 (see FIG. 2).

[Post-processing device]
The post-processing device 20 is a cutting machine that performs cutting processing on the paper P. The post-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 paper output trays T11, T12 or card tray T13. .
The post-processing device 20 includes a conveyance path D1, a cutting device 30, a sensor 27, a waste box 29, and the like.

The conveyance path D1 is also provided with a long paper conveyance path D2 that branches from the conveyance path D1 and merges downstream thereof. The long paper transport path D2 is used as a buffer when transporting long paper.
Furthermore, conveyance rollers 35 are provided in the conveyance paths D1 and D2 to convey the paper P by rotation of a pair of rollers provided to sandwich the paper P on the front and back sides at a prescribed interval along each path. There is.

The cutting device 30, which serves as a cutting device, performs a cutting process to cut the paper P being conveyed. The cutting device 30 includes FD cutting sections 31 to 33 and a CD cutting section 34 at a plurality of positions on the sheet P conveyance path D1.
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 respectively cut the ends (rear side and front side) in a direction C parallel to the plane of the paper P and perpendicular to the transport direction F (hereinafter referred to as the "orthogonal transport direction"). It's a slitter. The FD cutting unit 33 is a gutter cutting slitter that cuts the margins between adjacent products in the direction C orthogonal to the conveyance direction C of the paper P along the conveyance direction F.
The FD cutting sections 31 to 33 are equipped with, for example, an actuator such as a motor (not shown), and can adjust the cutting position in the transport orthogonal direction C within a specified range. Thereby, cutting can be performed along the conveyance direction F at a position that is a specified distance from both ends of the paper P in the conveyance direction C orthogonal to the conveyance direction C.
The CD cutting section 34 is a guillotine cutter that cuts the paper P along the direction C orthogonal to the conveyance direction. The CD cutting section 34 can arbitrarily adjust the cutting position of the paper P in the transport direction F by cooperating with the transport roller 35.

The sensor 27 detects cutting waste at a predetermined position in the depth direction (Z direction shown in FIG. 1) in the waste box 29, and outputs the detection result to the CPU 21 (see FIG. 2). That is, the sensor 27 detects that a certain amount of cutting waste has been loaded in the waste box 29.

The waste box 29 is installed below the cutting device 30 and stores cutting waste generated during the cutting operation of the cutting device 30 and falling from the cutting device 30. The user opens the door of the post-processing device 20, takes out the waste box 29, and discards the cutting waste in the waste box 29.
This waste box 29 has a discharge port of a predetermined size below the falling position of the cutting waste in the FD cutting units 31 to 33 and the CD cutting unit 34, and the cutting waste in each of the cutting units 31 to 34 is discharged from each of the cutting parts 31 to 34. The structure is such that the cutting waste is thrown into the waste box 29 through the outlet. Further, each of the discharge ports of the FD cutting sections 31 to 33 is formed of a long rectangular opening along the transport direction F, and the discharge port of the CD cutting section 34 is formed of a long rectangular opening along the transport direction C. It consists of an opening.

[Control system of image forming system]
FIG. 2 is a block diagram showing the functional configuration of the image forming system 100.
The image forming apparatus 10 includes a CPU 11, a ROM (Read Only Memory) 12, a RAM (Random Access Unit) 13, a storage section 14, a paper feed section 15, an image reading section 16, an image forming section 17, an operation display section 18, and a communication I/O section. Equipped with F (InterFace) 19 etc. Descriptions of the functional units that have already been described will be omitted.

The CPU 11 reads out a program stored in the ROM 12, loads it in 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 composed of a nonvolatile semiconductor memory or the like, and stores a system program, various processing programs executable on the system program, various data, and the like.
The RAM 13 is composed of a volatile semiconductor memory, etc., and forms a work area that temporarily stores programs, input or output data, parameters, etc. read from the ROM 12 in various processes executed by the CPU 11. .

The storage unit 14 is composed of an HDD (Hard Disk Drive), a nonvolatile semiconductor memory, and the like, and stores various data.
The communication I/F 19 includes a NIC (Network Interface Card), a modem, and the like, and transmits and receives data to and from the post-processing device 20 and a PC (Personal Computer).

The post-processing device 20 includes a CPU 21, a ROM 22, a RAM 23, a storage section 24, a paper transport section 25, a setting input section 26, a sensor 27, a communication I/F 28, a cutting device 30, a leading edge detection means 36, and the like.

The CPU 21, the ROM 22, and the RAM 23 are the same as the CPU 11, the ROM 12, and the RAM 13, except that the post-processing device 20 is controlled by the CPU 21.

The storage unit 24 is composed of an HDD, a nonvolatile semiconductor memory, etc., and stores various data. The storage section 24 serving as a storage means stores various parameters for cutting positions for cutting the paper P, their settable numerical ranges, and the like.

The paper conveyance unit 25 is composed of a plurality of conveyance rollers 35 provided along the conveyance paths D1 and D2, and discharges the paper P carried in from the image forming apparatus 10 to the paper discharge trays T11 and T12 or the card tray T13. Transport until.

A communication I/F 28 serving as a communication unit includes a NIC, a modem, and the like, and transmits and receives data to and from the image forming apparatus 10.

The setting input section 26 is configured with an LCD and includes a display section that displays various screens, and an operation section that is configured with a touch panel and various keys stacked on the display section. The setting input unit 26 outputs an operation signal input by touch operation or key operation to the CPU 21.
Further, the setting input section 26 functions as a setting means for setting various parameters that are the cutting position of the sheet P of the post-processing device 20.

The leading end detection means 36 is provided at a position immediately before and upstream (hereinafter also referred to as rear side) of the cutting device 30 in the transport direction in the transport path D1. The leading edge detection means 36 is a sensor that detects the downstream (hereinafter also referred to as front side) end (referred to as the leading edge) of the paper P being transported in the transport 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 tip, a microswitch that detects by contact, and the like.
The CPU 21 reads the driving rotation speed of each transport roller 35 after the leading edge of the paper P is detected by the leading edge detection means 36, and can recognize in which position of the transport path D1 the leading edge of the paper P is located. can. Then, the CPU 21 controls each of the cutting sections 31 to 34 of the cutting device 30 to cut the transported paper P at an appropriate timing.

[Settings related to cutting work]
An overview of the settings related to the cutting work performed by the post-processing device 20 will be explained based on the display example of the setting input screen shown in FIG. 3 and the explanatory diagrams showing the setting targets of the paper P shown in FIGS. 4 and 5.
The above setting input operation is performed from the setting input unit 26 of the post-processing device 20, and the setting input screen shown in FIG. 3 is displayed on the display unit included in the setting input unit 26.
Note that the specific numerical values shown in the following description are merely examples, and are not limited thereto.

Setting parameters required for the cutting operation include parameters relating to the paper size and cutting position along the transport direction C, and parameters relating to the cutting position along the transport direction F.
The paper size consists of a paper size L1, which is the width of the paper P to be cut in the transport direction F, and a paper size L2, which is the width in the transport orthogonal direction C. The setting values of these paper sizes L1 and L2 are set in advance. Multiple combinations are available, and the selection is made by selecting one of them. Note that it may be possible to input numerical values for paper sizes L1 and L2 individually.

[Parameters related to the cutting position along the orthogonal direction of conveyance]
As shown in FIG. 4, the parameters related to the cutting position along the transport orthogonal direction C include the "leading edge position "Rear edge position A1" is the trailing edge cutting position where the rear edge is cut in the transport direction C, and "Number of products N1" is the number of divisions when the paper P is divided into a plurality of parts in the transport direction F. , "finished size Y1" which is the width of each product in the transport direction F when the paper P is divided into multiple parts in the transport direction F, and the gap in the transport direction F between the products divided into multiple parts in the transport direction F An example of this is the width "gutter cutting width Z1".

Among these, the user can arbitrarily set numerical values for "tip position X1,""finished size Y1," and "gutter cutting width Z1" from the setting input section 26.
Specifically, on the setting input screen shown in Figure 3, select the "tip position", "finished size (width)", and "gutter cutting width (horizontal direction)" items individually, and enter the values using the number keys. . The minimum unit of numerical value that can be input is set to, for example, 0.1 [mm].
Regarding these numerical settings, the CPU 21 determines whether the numerical range of each input parameter is appropriate, and calculates the remaining parameters "back end position A1" and "number of products N1".
Note that the "trailing edge position A1" and "number of products N1" are determined based on the settings of "leading edge position , "Number of deliverables N1" can also be said to be indirectly set.

[Tip position setting]
Hereinafter, the process executed by the CPU 21 when setting the "tip position X1" will be explained. FIG. 6 is a display example of an error message displayed during processing, FIG. 7 is a display example of a highlight display displayed during processing, and FIG. 8 is a flowchart showing the processing of the CPU 21 when setting parameters regarding the cutting position. be.

First, the CPU 21 determines whether or not the "tip position X1" has been input from the setting input screen shown in FIG. It is determined whether or not is greater than or equal to the lower limit of a predetermined "tip position X1" (step S3).
That is, for the "leading edge position is stored in.

When cutting the front edge of the paper P, if the distance from the leading edge to the cutting position is too small, the paper P may not be held in front of the cutting position and may not be cut and may be bent. There may be cases where cutting cannot be performed. For this reason, the distance from the leading edge of the front edge of the paper P to the cutting position (leading edge position) is set to the lower limit value (which is larger than the actual lower limit value with some margin) that allows for good cutting. (including the value) are determined in advance and prepared in the storage unit 24. For example, the lower limit of the tip position X1 is set to 10 [mm].

When the input value of the tip position X1 is less than the lower limit value, the CPU 21 executes a notification process (step S5). As the notification process, for example, an error message as shown in FIG. 6 indicating that the input value is outside the appropriate range is displayed on the setting input section 26. Note that the error message is not limited to being displayed as a pop-up as described above, and any other means capable of making the user aware of the error message can be used.
In this way, the setting input section 26 functions as a notification means by notifying that the input value of the tip position X1 is outside the appropriate range.

Furthermore, when an operation to close the error message pop-up display is input, the CPU 21 displays a highlight on the setting input screen to let the user recognize the parameters that are outside the appropriate range, as shown in FIG. The setting input section 26 is controlled so as to perform the following steps (step S7).
In addition, in FIG. 7, an example is shown in which "Tip position In the case of only "tip position X1", only "tip position X1" is highlighted.
Furthermore, as long as it is possible to make the user aware of the parameters that are outside the appropriate range, other displays other than highlight display may be used.

On the other hand, if the input value of the tip position X1 is greater than or equal to the lower limit, the CPU 21 determines whether the input value of the tip position X1 is less than or equal to the upper limit (step S9).
That is, for the "leading edge position is stored in.

The cutting waste generated by cutting at the tip position X1 becomes a long strip, and falls into the waste box 29 through the discharge port located below the CD cutting section 34. In that case, if the cutting waste is wider than the width of the discharge port in the conveyance direction F, it will not be able to pass through the discharge port and cause a blockage, so the width of one cutting will be It must be smaller than the width. However, even if the width of the leading edge position The upper limit value of the tip position X1 is not limited to the width of the discharge port in the conveying direction F, since it is possible to discharge the paper by repeatedly cutting the paper a plurality of times with a width smaller than or equal to the width).
However, if cutting is repeated, the cutting time increases, so from the viewpoint of preventing delays in working time, the upper limit value of the tip position X1 is also stored in the storage unit 24. For example, the upper limit of the tip position X1 is set to 100 [mm].

If the input value of the tip position X1 exceeds the upper limit value, as in the case of the lower limit value, the CPU 21 displays the error message shown in FIG. The parameters that were found are highlighted (step S7).

On the other hand, if the input value of the tip position X1 is less than or equal to the upper limit value, the CPU 21 registers the input value of the tip position X1 as a set value in the storage unit 24 (step S11).
In addition, although the example in which the CPU 21 performs notification processing when the input value of the tip position Alternatively, a process may be performed in which the value is automatically changed to one of the two values and registered in the storage unit 24.

[Gutter cutting width setting]
Hereinafter, the process executed by the CPU 21 when setting the "gutter cutting width Z1" will be described. This case will also be explained with reference to FIGS. 6 to 8.
First, the CPU 21 determines whether or not the "gutter cutting width Z1" has been input from the setting input screen of FIG. 3 (step S1), and if the input has been made, the "gutter cutting width Z1" has been input. It is determined whether the input value is greater than or equal to the lower limit of a predetermined "gutter cutting width Z1" (step S3).
In other words, the "gutter cutting width Z1" is the lower limit value (a larger value with some margin in the actual lower limit value) that ensures a width that allows good cutting, similar to the "tip position X1" described above. (including the value) are prepared in the storage unit 24. For example, the lower limit value of the gutter cutting width Z1 is set to 10 [mm].

If the input value of the gutter cutting width Z1 is less than the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S5), and displays the high value of the parameter that is outside the appropriate range shown in FIG. A light display is performed (step S7). In this case, of the "tip position X1", "finished size Y1", and "gutter cutting width Z1" shown in FIG. 7, only the "gutter cutting width Z1" is highlighted.

On the other hand, if the input value of the gutter cutting width Z1 is greater than or equal to the lower limit value, the CPU 21 determines whether the input value of the gutter cutting width Z1 is less than or equal to the upper limit value (step S9).
In the case of the gutter cutting width Z1, as in the case of the above-mentioned "tip position It is stored in the storage unit 24. For example, the upper limit of the gutter cutting width Z1 is set to 100 [mm].

If the input value of the gutter cutting width Z1 exceeds the upper limit value, as in the case of the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S5), indicating that it is outside the appropriate range. The parameters are highlighted (step S7).
On the other hand, if the input value of the gutter cutting width Z1 is less than or equal to the upper limit value, the CPU 21 registers the input value of the gutter cutting width Z1 as a set value in the storage unit 24 (step S11).
In addition, although the example in which the CPU 21 performs notification processing when the input value of the gutter cutting width Z1 is less than the lower limit value or exceeds the upper limit value, the CPU 21 performs notification processing when the input value is either the lower limit value or the upper limit value. It is also possible to perform a process of automatically changing the value to a closer value and registering it in the storage unit 24.

[Finish size settings]
The process executed by the CPU 21 when setting the "finished size Y1" will be described below. This case will also be explained with reference to FIGS. 6 to 8.
First, the CPU 21 determines whether or not the "finished size Y1" has been input from the setting input screen of FIG. 3 (step S1), and if the input has been made, the input value of the "finished size Y1" It is determined whether or not is equal to or larger than the lower limit of a predetermined "finished size Y1" (step S3).
That is, when cutting the "finished size Y1", it is required that the width of the product resulting from cutting in the transport direction F is long enough to be transportable to the downstream side. In this case, the lower limit of the width of the product in the conveying direction F is required to be the length from the cutting position by the CD cutting section 34 to the conveying roller 35 located immediately downstream thereof. A lower limit value of this finished size Y1 (including a larger value with some margin than the actual lower limit value) is prepared in the storage unit 24.

If the input value of the finished size Y1 is less than the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S5), and displays the highlight of the parameter outside the appropriate range shown in FIG. Display is performed (step S7). In this case, of the "tip position X1", "finished size Y1", and "gutter cutting width Z1" shown in FIG. 7, only "finished size Y1" is highlighted.

On the other hand, if the input value of the finished size Y1 is equal to or greater than the lower limit value, the CPU 21 determines whether the input value of the finished size Y1 is equal to or less than the upper limit value (step S9).
In the case of the finished size Y1, no cutting waste is generated, so unlike the cases of the above-mentioned "tip position X1" and "gutter cutting width Z1", the upper limit is set to a physically possible range. That is, the upper limit is set to a value obtained by subtracting the setting value of "leading edge position X1" from the setting value of "paper size L1" that has already been set.

If the input value of the finished size Y1 exceeds the upper limit value, as in the case of the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S5), and displays the parameter that is outside the appropriate range. is highlighted (step S7).
On the other hand, if the input value of the finished size Y1 is less than or equal to the upper limit value, the CPU 21 registers the input value of the finished size Y1 as a set value in the storage unit 24 (step S11).
Although the example in which the CPU 21 performs notification processing when the input value of the finished size Y1 is less than the lower limit value or exceeds the upper limit value is shown, the CPU 21 does not notify the user when the input value is less than the lower limit value or exceeds the upper limit value, whichever is closer to the lower limit value or the upper limit value. Alternatively, a process may be performed in which the value is automatically changed to one of the two values and registered in the storage unit 24.

[Calculation of rear end position and number of artifacts]
When the values of "leading edge position X1", "finished size Y1", and "gutter cutting width Z1" are set, the CPU 21 calculates "rear end position A1" and "number of products N1". FIG. 9 is a flowchart showing the processing of the CPU 21 when calculating the rear end position A1 and the number N1 of products.

When the values of “paper size L1”, “leading edge position .
As can be seen from FIG. 4, the relationship between the "number of products N1", "paper size L1", "leading edge position X1", "finished size Y1", and "gutter cutting width Z1" is expressed by the following equation (1). To establish.
X1+Y1×N1+Z1×(N1-1)<L1 (1)
N1<(L1+Z1-X1)/(Y1+Z1) (2)

Calculate the value of the maximum "number of artifacts N1" that satisfies the above equation (2) by expanding equation (1). However, since N1 is a positive integer, the value obtained by rounding down the value of N1 determined by the above equation (2) to the first decimal place is set as N1.
Once the "number of products N1" is calculated, the following equation (3) holds true, so the "rear end position A1" can be calculated (step S23). The CPU 21 thus functions as a first determining means.
A1=L1-(X1+Y1×N1+Z1(N1-1)) (3)

When the "rear end position A1" is calculated, the CPU 21 determines whether the calculated value of the "rear end position A1" is equal to or greater than a predetermined lower limit value of the "rear end position A1" (step S25).
The lower limit value of "rear end position A1" is the lower limit value that ensures a width that allows good cutting (the lower limit value is set with some leeway than the actual lower limit value), similar to the "tip position X1" mentioned above. (including large values) are prepared in the storage unit 24. For example, the lower limit value of the rear end position A1 is set to 10 [mm].

If the calculated value of the rear end position A1 is less than the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S27), and displays the high value of the parameter that is outside the appropriate range shown in FIG. A light display is performed (step S29). In this case, the trailing edge position A1 is not a parameter whose numerical value is arbitrarily set by the user, but is a numerical value determined by the set values of "tip position X1,""finished size Y1," and "gutter cutting width Z1." As shown, "tip position X1,""finished size Y1," and "gutter cutting width Z1" are all highlighted.
In other words, the user is prompted to modify any or all of the values of "tip position X1,""finished size Y1," and "gutter cutting width Z1."

On the other hand, if the calculated value of the rear end position A1 is greater than or equal to the lower limit value, the CPU 21 determines whether the calculated value of the rear end position A1 is less than or equal to the upper limit value (step S31).
The cutting waste generated by cutting at the rear end position A1 becomes a long strip, and falls into the waste box 29 through the discharge port located below the CD cutting section 34. In that case, if the cutting waste is wider than the width of the discharge port in the conveying direction F, it will not be able to pass through the discharge port and cause a blockage. also needs to be made smaller.
Note that in the case of cutting at the rear end position A1, the rear end position A1 is sent downstream from the cutting position in one cutting, so it cannot be repeatedly performed like the cutting at the leading end position X1.
Therefore, the width of the rear end position A1 must be set to be less than or equal to the width of the discharge port in the conveyance direction F. It is set to a somewhat smaller value with some margin.
The upper limit value of the rear end position A1 is stored in the storage unit 24. For example, the upper limit value of the rear end position A1 is set to 13 [mm].

If the calculated value of the trailing end position A1 exceeds the upper limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S27), as in the case of the lower limit value. The "finished size Y1" and "gutter cutting width Z1" are highlighted (step S29).
On the other hand, if the calculated value of the rear end position A1 is less than or equal to the upper limit value, the CPU 21 registers the calculated value of the rear end position A1 as a set value in the storage unit 24 (step S33).

[Parameters related to the cutting position along the conveyance direction]
As shown in FIG. 5, the parameters related to the cutting position along the conveyance direction F include the first side where one end side (referred to as the back side) of the paper P in the conveyance direction C is cut in the conveyance direction F. "Back side position X2" as an edge cutting position, and "near side position "Position A2", "Number of products N2" which is the number of divisions when the paper P is divided into a plurality of parts in the transport orthogonal direction C, and the transport orthogonal position of each product when the paper P is divided into a plurality of parts in the transport orthogonal direction C. Examples include a "finished size Y2" which is the width in the direction C, and a "gutter cutting width Z2" which is the gap width in the transport direction C between products that are divided into a plurality of products in the transport direction C.

Among these, the user can arbitrarily set numerical values for "rear side position X2" and "finished size Y2" from the setting input section 26. On the other hand, the "gutter cutting width Z2" has a fixed value because the interval between the pair of blades in the direction C orthogonal to the conveyance direction is fixed. The "gutter cutting width Z2" is set to, for example, 8 [mm].

Further, the "number of products N2" is also a fixed value because it is determined by the number of the pair of blades that perform the gutter cutting that cuts one side of the product in the transport direction C along the transport direction F. For example, the number of "number of artifacts N2" is set to 3.

Specifically, on the setting input screen shown in FIG. 3, the items ``back position'' and ``finished size (vertical width)'' are individually selected, and numerical values are input using the numeric keys. The minimum unit of numerical value that can be input is set to, for example, 0.1 [mm].
Regarding these numerical settings, the CPU 21 determines whether the numerical range of each input parameter is appropriate and calculates the remaining parameter "front side position A2."
Note that the "front position A2" is determined based on the settings of the "back side position X2" and "finished size Y2", so it can be said that the "front side position A2" is also set indirectly. can.

[Setting the rear position]
Hereinafter, the process executed by the CPU 21 when setting the "back side position X2" will be explained with reference to FIGS. 6 to 8.
First, the CPU 21 determines whether or not the "back side position X2" has been input from the setting input screen of FIG. It is determined whether the input value is equal to or greater than a predetermined lower limit value of "rear side position X2" (step S3).

That is, for the "back side position It is stored in the section 24.
In this case as well, when cutting the far end of the paper P along the conveyance direction F, if the distance from the far end to the cutting position is too small, it may not be possible to perform good cutting. A lower limit value (including a value larger than the actual lower limit value with some margin) that allows good cutting is determined in advance and prepared in the storage unit 24. For example, the lower limit value of the back position X2 is set to 8 [mm].

If the input value of the rear position A light display is performed (step S7). In this case, instead of the "tip position X1," "finished size Y1," and "gutter cutting width Z1" shown in FIG. 7, only the "rear side position X2" is highlighted.

On the other hand, if the input value for the back position X2 is greater than or equal to the lower limit, the CPU 21 determines whether the input value for the back position X2 is less than or equal to the upper limit (step S9).
The cutting waste generated by cutting at the back position X2 becomes a long strip and falls into the waste box 29 through the discharge port located below the FD cutting section 31. In that case, if the cutting waste is wider than the width of the discharge port in the direction C perpendicular to the conveyance direction, it will not be able to pass through the discharge port and cause a blockage. It is necessary to set the value to be the same as the width or slightly smaller with some margin.
The upper limit value of the back position X2 is stored in the storage unit 24. For example, the upper limit value of the rear end position A1 is set to 26 [mm].

When the input value of the back position X2 exceeds the upper limit value, the CPU 21 displays the error message shown in FIG. Only the "rear side position X2" is highlighted instead of "position X1", "finished size Y1", and "gutter cutting width Z1" (step S7).

On the other hand, if the input value for the back position X2 is less than or equal to the upper limit value, the CPU 21 registers the input value for the back position X2 as a set value in the storage unit 24 (step S11).
In addition, although the example in which the CPU 21 performs notification processing when the input value of the rear side position It is also possible to perform a process of automatically changing the value to a closer value and registering it in the storage unit 24.

[Finish size settings]
The process executed by the CPU 21 when setting the "finished size Y2" will be described below. This case will also be explained with reference to FIGS. 6 to 8.
First, the CPU 21 determines whether or not the "finished size Y2" has been input from the setting input screen of FIG. 3 (step S1), and if the input has been made, the input value of the "finished size Y2" It is determined whether or not is equal to or larger than the lower limit of a predetermined "finished size Y2" (step S3).
The "finished size Y2" has a lower limit value and an upper limit value. The lower limit value is determined according to the movable range in the transport direction C of a pair of blades that perform cutting according to the gutter cutting width Z2 on one side of the product obtained by cutting in the transport direction C.
Further, the upper limit value is for the case where cutting of the gutter cutting width Z2 is not performed, and the upper limit value is the value obtained by subtracting the setting value of "back side position X2" from the setting value of "paper size L2".
The lower limit value of this finished size Y2 (including a value larger than the actual lower limit value with some margin) and the upper limit value are prepared in the storage unit 24.

If the input value of the finished size Y2 is less than the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S5), and displays the highlight of the parameter outside the appropriate range shown in FIG. Display is performed (step S7). In this case, only "finished size Y2" is highlighted instead of "tip position X1," "finished size Y1," and "gutter cutting width Z1" shown in FIG.

On the other hand, if the input value of the finished size Y2 is equal to or greater than the lower limit value, the CPU 21 determines whether the input value of the finished size Y2 is equal to or less than the upper limit value (step S9).
If the input value of finished size Y2 exceeds the upper limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S5), as in the case of the lower limit value, and displays the parameter that is outside the appropriate range. is highlighted (step S7).
On the other hand, if the input value of the finished size Y2 is less than or equal to the upper limit value, the CPU 21 registers the input value of the finished size Y2 as a set value in the storage unit 24 (step S11).
Although the example in which the CPU 21 performs notification processing when the input value of the finished size Y2 is less than the lower limit value or exceeds the upper limit value is shown, the CPU 21 does not notify the user when the input value is less than the lower limit value or exceeds the upper limit value, whichever is closer to the lower limit value or the upper limit value. Alternatively, a process may be performed in which the value is automatically changed to one of the two values and registered in the storage unit 24.

[Calculation of near side position]
When the values of "rear side position X2" and "finished size Y2" are set, the CPU 21 calculates the "near side position A2". The calculation process will be explained with reference to the flowchart in FIG.

When the values of "paper size L2", "rear side position From this, the "front side position A2" is calculated using the following equation (4) (step S41). The CPU 21 thereby functions as a second determining means.
A2=L2-(X2+Y2×N2+Z2(N2-1)) (4)

When the "near side position A2" is calculated, the CPU 21 determines whether the calculated value of the "near side position A2" is greater than or equal to the predetermined lower limit value of the "near side position A2" (step S43).
The lower limit of "front side position A2" is the same as the above-mentioned "back side position (including larger values) are prepared in the storage unit 24. For example, the lower limit value of the near side position A2 is set to 8 [mm].

If the calculated value of the near side position A2 is less than the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S45), and displays the high value of the parameter that is outside the appropriate range shown in FIG. A light display is performed (step S47). In this case, the near side position A2 is not a parameter whose numerical value is arbitrarily set by the user, but is a numerical value determined by the set values of "back side position X2" and "finished size Y2", so the "tip position X1" shown in FIG. , "Finished size Y1" and "Gutter cutting width Z1", "Back side position X2" and "Finished size Y2" are highlighted.
In other words, the user is prompted to modify the numerical value of either or both of "back side position X2" and "finished size Y2".

On the other hand, if the calculated value of the near side position A2 is greater than or equal to the lower limit value, the CPU 21 determines whether the calculated value of the near side position A2 is less than or equal to the upper limit value (step S49).
In the case of the front side position A2 as well as the back side position The width needs to be the same as or slightly smaller than the width of the discharge port in the direction C orthogonal to the conveyance direction C, with some margin.
The upper limit value of the near side position A2 is stored in the storage unit 24. For example, the upper limit value of the near side position A2 is set to 26 [mm].

If the calculated value of the near side position A2 exceeds the upper limit value, as in the case of the lower limit value, the CPU 21 displays the error message shown in FIG. 6 as a notification process (step S45), , "finished size Y2" is highlighted (step S47).
On the other hand, if the calculated value of the near side position A2 is less than or equal to the upper limit value, the CPU 21 registers the calculated value of the near side position A2 as a set value in the storage unit 24 (step S51).

[Cutting operation]
As described above, when all of the setting parameters necessary for the cutting operation, such as the paper size, the cutting position along the transport direction C, and the cutting position along the transport direction F, are set, the CPU 21 , performs cutting operation.
During the cutting operation, the CPU 21 controls the FD cutting units 31 to 33 to cut the paper along the conveying direction F according to the set values of "back side position X2", "front side position A2", and "finished size Y2". Cutting is performed, and the CD cutting unit 34 is controlled to cut along the transport orthogonal direction C according to the "leading edge position The paper P is then cut to form a product, and the product is delivered to paper delivery trays T11, T12 or card tray T13.

[Technical effects of embodiments of the invention]
The post-processing device 20 of the image forming system 100 includes a storage unit 24 that stores a numerical range that can be set for each parameter of a plurality of cutting positions of the paper P set by the setting input unit 26. Therefore, each cutting position can be set within an appropriate range, and it is possible to suppress the occurrence of conveyance defects and achieve good cutting.

Further, the parameters related to the cutting position that are directly or indirectly set by the setting input section 26 include the leading edge position X1 and the trailing edge position A1.
Therefore, a plurality of cutting positions along the conveyance direction F can be set within an appropriate range, and it is possible to suppress the occurrence of cutting defects and the like and realize good cutting.

In addition, since the settable range of the tip position X1 is set to be equal to or greater than the lower limit of the distance from the tip of the downstream end in the conveying direction F, cutting at the tip position X1 can be performed better and more stably. becomes possible.

Further, as a settable range of the rear end position A1, the upper limit is a distance that is greater than or equal to the lower limit value of the distance from the tip of the upstream end in the conveyance direction F, and that is a width that allows the cutting waste to be discharged from the discharge port. Since it is less than this value, it is possible to perform cutting particularly at the rear end position A1 better and more stably, suppress the occurrence of clogging with cutting waste, etc., and make it possible to continuously perform good cutting. .

Further, using the setting input unit 26, a leading edge position X1 for cutting the front edge of the paper P in the transport direction F in the transport direction C and a finished size Y1, which is the size of the cut product in the transport direction F, are set. Then, the CPU 21 functions as a first determining unit that determines the trailing edge position A1 at which the trailing edge of the paper P is cut in the transport orthogonal direction C from these.
This eliminates the need for the user to calculate and determine an appropriate position for the rear end position A1, and it becomes possible to dramatically reduce the burden of setting work in cutting. Furthermore, it is possible to reduce the occurrence of cutting defects due to setting errors.

In addition, the cutting device 30 is provided with a discharge port for cutting waste from cutting in the direction C orthogonal to the conveyance, and the settable range of the trailing edge position A1 is set to a specified lower limit of the distance from the tip of the trailing edge of the paper P. The width is set to be less than or equal to the upper limit that allows the cutting waste to be discharged from the discharge port.
Then, the CPU 21 performs control to notify when the calculated rear end position A1 is greater than or equal to the lower limit value and outside the range less than or equal to the upper limit value.
As a result, the cutting at the rear end position A1 can be performed better and more stably, and the occurrence of clogging with cutting waste can be suppressed, so that good cutting can be performed continuously. It becomes possible to set it within an appropriate range.

In addition, the parameters related to the cutting position that are directly or indirectly set by the setting input unit 26 include a back position This includes a cutting position A2 on the near side.
Therefore, the cutting positions of both ends in the direction C orthogonal to the conveyance can be set within an appropriate range, and it is possible to suppress the occurrence of cutting defects and achieve good cutting.

In addition, the range in which the rear side position Since the width is less than the upper limit that can be ejected from the paper, it is possible to perform cutting at the back position It becomes possible to perform good cutting.

Further, when the setting input unit 26 sets the back position X2 and the finished size Y2, which is the size of the product in the transport orthogonal direction C, the CPU 21 uses the second determining means to determine the near side position A2 from these. functions as
This eliminates the need for the user to calculate and determine an appropriate position for the near side position A2, and it becomes possible to dramatically reduce the burden of setting work in cutting. Furthermore, it is possible to reduce the occurrence of cutting defects due to setting errors.

Further, the cutting device 30 is provided with a discharge port for cutting waste from cutting in the transport direction F, and the settable range of the front side position A2 is such that the distance from the tip of the other end of the paper P in the transport direction C is specified. The width is set to be equal to or greater than the lower limit value and equal to or less than the upper limit value at which the width allows the cutting waste to be discharged from the discharge port.
Then, the CPU 21 performs control to notify when the calculated near side position A2 is greater than or equal to the lower limit value and outside the range less than or equal to the upper limit value.
As a result, the cutting at the near side position A2 can be performed better and more stably, and the occurrence of clogging with cutting waste can be suppressed, so that good cutting can be performed continuously. It becomes possible to set it within an appropriate range.

[others]
Note that the description in each of the above embodiments is an example of a post-processing device and an image forming system according to the present invention, and the present invention is not limited thereto. The detailed configuration and detailed operation of each part constituting the device can also be changed as appropriate without departing from the spirit of the present invention.

Further, the CPU 21, ROM 22, RAM 23, storage section 24, and setting input section 26 of the above-mentioned post-processing device 20 are shared with the CPU 11, ROM 12, RAM 13, storage section 14, and operation display section 18 of the image forming apparatus 10. These configurations may be configured to execute processing for setting various parameters related to cutting of the post-processing device 20.

Further, an information processing terminal such as an external personal computer may be connected to the image forming apparatus 10 and the post-processing apparatus 20, and the information processing terminal may perform the processing performed by the CPU 21 of the post-processing apparatus 20 described above. Further, various cutting parameters may be input using an input interface such as a keyboard or a mouse provided on an information processing terminal such as a personal computer.
In that case, a configuration including an information processing terminal such as a personal computer may be regarded as an image forming system.

Further, in the above-mentioned post-processing device 20, the CPU 21 functions as the first or second determining means to calculate the rear end position A1 and the front side position A2, but the rear end position A1 and the front side position A2 may be set to an arbitrary numerical value using the setting input section 26. In that case, it is preferable that the CPU 21 determines whether the input value satisfies the range between the upper limit value and the lower limit value.

Furthermore, in each of the above embodiments, a case has been described in which paper P is used as the sheet, but the material of the sheet is not limited to paper, and may be a sheet-shaped resin or the like.

10 Image forming device 11 CPU
14 Storage section 17 Image forming section 18 Operation display section 20 Post-processing device 21 CPU (first determining means, second determining means)
24 Storage section 26 Setting input section (setting means, notification means)
29 Waste box 30 Cutting devices 31 to 33 FD cutting section 34 CD cutting section 35 Conveying roller 36 Leading edge detection means 100 Image forming system A1 Trailing edge position ( trailing edge cutting position)
A2 Front side position (second side edge cutting position)
C Orthogonal direction of conveyance F Conveyance direction L1, L2 Paper size P Paper (sheet)
X1 Tip position (tip cutting position)
X2 Back position (first side edge cutting position)
Y1 Finished size (size in conveyance direction)
Y2 Finished size (size in the direction perpendicular to the transport direction)
Z1 Gutter cutting width Z2 Gutter cutting width

Claims (18)

a cutting means for cutting the sheet;
A first size in the conveyance direction of the sheet to be cut, a second size in a direction perpendicular to the conveyance direction of the sheet to be cut, and a downstream end of the sheet in the conveyance direction perpendicular to the conveyance direction. a leading end cutting position for cutting in the direction of cutting, a third size in the conveyance direction of the product resulting from cutting, a first side edge cutting position for cutting one end in the direction perpendicular to the conveyance direction in the conveyance direction, and a result of cutting. Setting means for setting a fourth size in a direction perpendicular to the conveying direction of the object;
a first determining unit that determines a trailing edge cutting position for cutting an upstream end of the sheet in a direction perpendicular to the conveying direction from the leading edge cutting position and the third size;
a second determining means for determining, from the first side edge cutting position and the fourth size, a second side edge cutting position at which the other end of the sheet in a direction perpendicular to the conveying direction is cut in the conveying direction;
The upper and lower limits of the leading edge cutting position, the lower limits of the third size, the upper and lower limits of the first side edge cutting position, the lower limits of the fourth size, the upper limit of the trailing edge cutting position, and a storage means for storing in advance a lower limit value, an upper limit value and a lower limit value of the second side edge cutting position as a settable value range;
As a range of settable values, the upper limit value of the third size is calculated from the first size and the tip cutting position, and the upper limit value of the fourth size is calculated from the second size and the first side edge cutting position. a calculation means to
The values of the setting parameters including the leading edge cutting position, the third size, the first side edge cutting position, the fourth size, the trailing edge cutting position, and the second side edge cutting position are the settable values. a means of determining whether the range is within the range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
A post-processing device comprising: 2. The post-processing apparatus according to claim 1 , wherein the settable range of the leading edge cutting position is such that a distance from the leading edge of the downstream end in the conveyance direction of the sheet is equal to or greater than a predetermined lower limit value. comprising a discharge port for cutting waste produced by cutting in a direction perpendicular to the conveyance direction by the cutting means;
The range in which the trailing edge cutting position can be set is such that the distance from the tip of the upstream end in the conveyance direction of the sheet is equal to or greater than a prescribed lower limit value, and the cutting is performed in a direction perpendicular to the conveyance direction. The post-processing device according to claim 1 or 2, wherein the width is equal to or less than an upper limit value that allows waste to be discharged from the discharge port. comprising a discharge port for cutting waste produced by cutting in a direction perpendicular to the conveyance direction by the cutting means;
The range in which the trailing edge trimming position can be set is such that the distance from the tip of the upstream end in the conveyance direction of the sheet is equal to or greater than a specified lower limit, and the cutting waste is generated by cutting in a direction perpendicular to the conveyance direction. is below the upper limit of the width that can be discharged from the discharge port,
4. Any one of claims 1 to 3, further comprising a notification unit for notifying when the trailing edge cutting position determined by the first determining unit is greater than or equal to the lower limit value and deviates from a range less than or equal to the upper limit value. The post-processing device according to item 1 . comprising a discharge port for cutting waste produced by cutting in the conveyance direction by the cutting means,
The range in which the first side edge cutting position and the second side edge cutting position can be set includes the distance from the tip of one end to the first side edge cutting position in the direction orthogonal to the conveyance direction of the sheet, and the sheet. The distance from the tip of the other end to the second side edge cutting position in the direction perpendicular to the conveyance direction is equal to or greater than a specified lower limit value, and the cutting waste from the cutting in the conveyance direction is removed from the waste. The post-processing device according to any one of claims 1 to 4, characterized in that the width is equal to or less than an upper limit value that allows the waste to be discharged from the outlet. comprising a discharge port for cutting waste produced by cutting in the conveyance direction by the cutting means,
The range in which the second side edge cutting position can be set is such that the distance from the tip of the other end in the direction perpendicular to the conveying direction of the sheet is equal to or greater than a specified lower limit, and the cutting waste due to cutting in the conveying direction is is below the upper limit of the width that can be discharged from the discharge port,
5. Claims 1 to 5, further comprising a notification unit that notifies when the second side edge cutting position determined by the second determining unit is greater than or equal to the lower limit value and deviates from a range that is less than or equal to the upper limit value. The post-processing device according to any one of the above . an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
A first size in the conveyance direction of the sheet to be cut, a second size in a direction perpendicular to the conveyance direction of the sheet to be cut, and a downstream end of the sheet in the conveyance direction perpendicular to the conveyance direction. a leading end cutting position for cutting in the direction of cutting, a third size in the conveyance direction of the product resulting from cutting, a first side edge cutting position for cutting one end in the direction perpendicular to the conveyance direction in the conveyance direction, and a result of cutting. Setting means for setting a fourth size in a direction perpendicular to the conveying direction of the object;
a first determining unit that determines a trailing edge cutting position for cutting an upstream end of the sheet in a direction perpendicular to the conveying direction from the leading edge cutting position and the third size;
a second determining means for determining, from the first side edge cutting position and the fourth size, a second side edge cutting position at which the other end of the sheet in a direction perpendicular to the conveying direction is cut in the conveying direction;
The upper and lower limits of the leading edge cutting position, the lower limits of the third size, the upper and lower limits of the first side edge cutting position, the lower limits of the fourth size, the upper limit of the trailing edge cutting position, and a storage means for storing in advance a lower limit value, an upper limit value and a lower limit value of the second side edge cutting position as a settable value range;
As a range of settable values, the upper limit value of the third size is calculated from the first size and the tip cutting position, and the upper limit value of the fourth size is calculated from the second size and the first side edge cutting position. a calculation means to
The values of the setting parameters including the leading edge cutting position, the third size, the first side edge cutting position, the fourth size, the trailing edge cutting position, and the second side edge cutting position are the settable values. a means of determining whether the range is within the range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
An image forming system comprising: 8. The image forming system according to claim 7 , wherein the settable range of the leading edge cutting position is such that a distance from the leading edge of the downstream end in the conveyance direction of the sheet is equal to or greater than a predetermined lower limit value. comprising a discharge port for cutting waste produced by cutting in a direction perpendicular to the conveyance direction by the cutting means;
The range in which the trailing edge cutting position can be set is such that the distance from the tip of the upstream end in the conveyance direction of the sheet is equal to or greater than a prescribed lower limit value, and the cutting is performed in a direction perpendicular to the conveyance direction. 9. The image forming system according to claim 7 , wherein the width is set to be less than or equal to an upper limit value that allows waste to be discharged from the discharge port. comprising a discharge port for cutting waste produced by cutting in a direction perpendicular to the conveyance direction by the cutting means;
The range in which the trailing edge trimming position can be set is such that the distance from the tip of the upstream end in the conveyance direction of the sheet is equal to or greater than a specified lower limit, and the cutting waste is generated by cutting in a direction perpendicular to the conveyance direction. is below the upper limit of the width that can be discharged from the discharge port,
10. Any one of claims 7 to 9, further comprising notification means for notifying when the trailing edge cutting position determined by the first determining means is greater than or equal to the lower limit value and out of a range less than or equal to the upper limit value. The image forming system according to item 1 . comprising a discharge port for cutting waste produced by cutting in the conveyance direction by the cutting means,
The range in which the first side edge cutting position and the second side edge cutting position can be set includes the distance from the tip of one end to the first side edge cutting position in the direction orthogonal to the conveyance direction of the sheet, and the sheet. The distance from the tip of the other end to the second side edge cutting position in the direction perpendicular to the conveyance direction is equal to or greater than a specified lower limit value, and the cutting waste from the cutting in the conveyance direction is removed from the waste. The image forming system according to any one of claims 7 to 10, characterized in that the width is equal to or less than an upper limit value that is a width that can be discharged from the exit. comprising a discharge port for cutting waste produced by cutting in the conveyance direction by the cutting means,
The range in which the second side edge cutting position can be set is such that the distance from the tip of the other end in the direction perpendicular to the conveying direction of the sheet is equal to or greater than a specified lower limit, and the cutting waste due to cutting in the conveying direction is is below the upper limit of the width that can be discharged from the discharge port,
Claims 7 to 11 further comprising a notification unit that notifies when the second side edge cutting position determined by the second determining unit is greater than or equal to the lower limit value and deviates from a range that is less than or equal to the upper limit value. The image forming system according to any one of the above . an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
a discharge port for cutting waste produced by cutting the sheet in a direction perpendicular to the conveyance direction of the sheet by the cutting means;
a first size in the conveyance direction where cutting is performed; a tip cutting position where the downstream end of the sheet in the conveyance direction is cut in a direction perpendicular to the conveyance direction; and a third size of the cut product in the conveyance direction. a setting means for setting the
a first determining unit that determines a trailing edge cutting position for cutting an upstream end of the sheet in a direction perpendicular to the conveying direction from the leading edge cutting position and the third size;
Storage means for storing in advance the upper and lower limits of the leading edge cutting position, the lower limit of the third size, and the upper and lower limits of the trailing edge cutting position as a settable value range;
Calculating means for calculating an upper limit value of the third size as a settable value range from the first size and the tip cutting position;
determining means for determining whether values of setting parameters including the leading edge cutting position, the third size, and the trailing edge cutting position are within the settable value range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
An image forming system comprising: an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
a discharge port for cutting waste produced by cutting the sheet in the conveyance direction by the cutting means;
A first side edge cutting position is set for cutting one end in the direction perpendicular to the conveyance direction in the conveyance direction, and a second side edge cutting position is set for cutting the other end in the direction perpendicular to the conveyance direction in the conveyance direction. a setting means for
storage means for storing in advance an upper limit value and a lower limit value of the first side edge cutting position and an upper limit value and a lower limit value of the second side edge cutting position as a settable value range;
determining means for determining whether values of setting parameters including the first side edge cutting position and the second side edge cutting position are both within the settable value range;
An image forming system comprising: an image forming means for forming an image on the sheet;
a cutting means for cutting the sheet;
a discharge port for cutting waste produced by cutting the sheet in the conveyance direction by the cutting means;
a second size in a direction perpendicular to the conveyance direction in which cutting is performed; a first side edge cutting position where one end in the direction perpendicular to the conveyance direction is cut in the conveyance direction; and a cut product in the conveyance direction. a setting means for setting a fourth size in the orthogonal direction;
a second determining means for determining, from the first side edge cutting position and the fourth size, a second side edge cutting position at which the other end of the sheet in a direction perpendicular to the conveying direction is cut in the conveying direction;
a storage means for storing in advance an upper limit value and a lower limit value of the first side edge cutting position, a lower limit value of the fourth size, and an upper limit value and a lower limit value of the second side edge cutting position as a settable value range; ,
Calculation means for calculating an upper limit value of the fourth size from the second size and the first side edge cutting position;
determining means for determining whether values of setting parameters including the first side edge cutting position, the fourth size, and the second side edge cutting position are within the settable value range;
Notifying means for notifying when the determining means determines that the value of the setting parameter is outside the range of settable values;
An image forming system comprising: The cutting positions by the cutting means include a tip cutting position where the downstream end of the sheet in the conveyance direction is cut in a direction perpendicular to the conveyance direction, and a tip cutting position where the upstream end of the sheet in the conveyance direction is cut in the conveyance direction. The image forming system according to any one of claims 13 to 15, further comprising a rear end cutting position for cutting in a direction orthogonal to the paper. 17. The image forming system according to claim 16 , wherein the settable range of the leading end cutting position is such that a distance from the leading end of the downstream end in the conveyance direction of the sheet is equal to or greater than a prescribed lower limit value. . comprising a discharge port for cutting waste produced by cutting in a direction perpendicular to the conveyance direction by the cutting means;
The range in which the trailing edge cutting position can be set is such that the distance from the tip of the upstream end in the conveyance direction of the sheet is equal to or greater than a prescribed lower limit value, and the cutting is performed in a direction perpendicular to the conveyance direction. 18. The image forming system according to claim 16 or 17 , wherein the width is equal to or less than an upper limit value that allows waste to be discharged from the discharge port.

Images