JP2020194429A - Paper sheet inspection system and paper sheet inspection method - Google Patents

Abstract

To easily identify which step of a plurality of manufacturing steps causes a defective product when the defective product is detected in paper sheets.SOLUTION: A paper sheet inspection system associates a position on a sheet of an individual paper sheet with an identification number for identifying the individual paper sheet, inspects a print state of the individual paper sheet having the identification number to associate at least the identification number with the inspection result of the print state, and stores cause step identification information in which an arrangement position of the individual paper sheet on the sheet is associated with information for identifying which step of a plurality of steps, including a step of printing a drawing pattern on the sheet, a step of printing the identification number, and a step of cutting the sheet, causes an error according to the inspection result of the past print state, in a storage unit, and identifies the step causing the error on the basis of the inspection result and the cause step identification information.SELECTED DRAWING: Figure 1

Description

The embodiment relates to a paper leaf inspection system and a paper leaf inspection method.

A sheet-shaped object to be inspected is irradiated with light, an image of the object to be inspected is taken by the reflected light and / or transmitted light, and the image to be inspected is inspected based on the feature amount obtained by processing the photographed image data. A sheet inspection device that detects an abnormality contained in an object is known.

Japanese Unexamined Patent Publication No. 2018-179698

By the way, for example, securities such as gift certificates and coupons, or paper leaves such as banknotes may be manufactured by cutting a plurality of securities or large-sized sheets on which paper leaves are printed. is there. For example, this manufacturing process includes a process of printing a plurality of paper sheets on a large-sized sheet, numbering each sheet, and then cutting the large-sized sheet into each sheet. Finally, in the finishing process, the paper sheets produced through such a process are inspected one by one to see if the quality is cleared for each predetermined inspection item. The inspection results for each inspection item are stored on the server. Then, according to the instruction of the user, the server displays the inspection result for each inspection item to the operator to ensure the quality of the manufactured paper sheets.

However, some defective products whose quality cannot be cleared may be detected in the produced paper sheets. In this case, it is necessary to identify which of the plurality of paper leaf manufacturing processes is the cause. In order to identify the cause, it is necessary to investigate by an expert, so it takes time to identify the cause, which leads to a decrease in the production efficiency of paper sheets.
Here, with the technique described in Patent Document 1, even if the abnormality contained in the object to be inspected can be detected, it is not possible to grasp which step the abnormality occurred in.

The problem to be solved by the present invention is that when a defective product is detected in paper leaves, it is possible to easily identify which of the plurality of manufacturing processes is the cause of the defective product. It is an object of the present invention to provide a kind inspection system and a paper leaf inspection method.

Inspection of a paper leaf inspection system that cuts a sheet on which a plurality of paper leaves having identification numbers are printed according to an embodiment into individual paper leaves and inspects the quality of the cut individual paper leaves. The method links the position of the individual paper sheets on the sheet with the identification number for identifying the individual paper sheets, inspects the printing state of the individual paper sheets having the identification number, and at least The correspondence between the identification number and the inspection result of the printing state is linked, and from the inspection result of the past printing state, the arrangement position of the individual paper sheets on the sheet, the pattern printing on the sheet, the identification number printing, The cause process identification information associated with the information for identifying in which of the plurality of processes including the process of cutting the sheet the error has occurred is stored in the storage unit, and the inspection result and the cause process identification are stored. Based on the information, identify the process in which the error occurred.

The figure for demonstrating the manufacturing process which manufactures the banknote which concerns on embodiment. The plan view which shows an example of the large-sized size sheet which concerns on the same embodiment. The figure which shows a part example of the large-sized size sheet which concerns on the same embodiment. The figure which shows the transport direction which the numbering printing apparatus which concerns on the same embodiment conveys a large-sized sheet. The figure which shows an example of the position where the number which concerns on this embodiment is printed. The figure which shows an example of the large-sized sheet bundle which concerns on the same embodiment. The figure which shows the transport direction which transports a large-sized sheet bundle by the cutting apparatus which concerns on the same embodiment. The figure which shows an example of the paper leaf bundle of the position A part cut from the large-sized sheet bundle which concerns on embodiment. The figure which shows an example of the structure of the print inspection apparatus which concerns on the same embodiment. The figure which shows an example of the configuration of the management server which concerns on the same embodiment. The figure which shows an example of the data used when performing the inspection process of the paper leaf which concerns on the same embodiment. The figure which shows an example of the correspondence relation data part which concerns on embodiment. The figure which shows an example of the statistical result data part which concerns on the same embodiment. The figure which shows an example of the cause process data part which concerns on the same embodiment. The flowchart which shows an example of the inspection process of the print inspection apparatus which concerns on the same embodiment. The flowchart which shows an example of the display process of the inspection result which concerns on the same embodiment. The figure which shows an example of the display of the display part when the position which detected the error which concerns on the same embodiment does not exist. The figure which shows an example of the display of the display part when the position which detected the error which concerns on the same embodiment exists. The figure which shows an example of the display of the display part when the position which detected the error which concerns on the same embodiment exists.

Hereinafter, embodiments will be described with reference to the drawings. The disclosure is merely an example, and the invention is not limited by the contents described in the following embodiments. Modifications that can be easily conceived by those skilled in the art are naturally included in the scope of disclosure. In order to clarify the explanation, in the drawings, the size, shape, etc. of each part may be changed with respect to the actual embodiment and represented schematically. In a plurality of drawings, the corresponding elements may be given the same reference numbers and detailed description may be omitted.

FIG. 1 is a diagram for explaining a manufacturing process for manufacturing paper sheets. In the following embodiment, a case where paper leaves are processed in units of 100 sheets will be described as an example, but paper leaves can be processed in units of 100 sheets × n (n: natural number). .. Further, the paper leaves may be processed not in units of 100 sheets but in units of a predetermined number of sheets.
As shown in FIG. 1, the manufacturing process includes a large-format sheet printing process, a numbering printing process, a cutting process, and a finishing process. In the present embodiment, the large-format sheet printing step includes a step of inspecting a large-format sheet, the numbering step includes a step of inspecting numbering, and the cutting step includes a step of inspecting the size. This will be explained in the case of. The large-format sheet printing step is executed by the large-format sheet printing device 10 and the large-format sheet inspection device 20. The numbering printing step is executed by the numbering printing apparatus 30 and the numbering inspection apparatus 40. The cutting step is performed by the cutting device 50 and the size inspection device. The finishing step is executed by the print inspection device 100 and the management server 200.

The large-format sheet printing step is a step of printing a plurality of paper leaf patterns on the large-format sheet by the large-format sheet printing apparatus 10. For example, 9 sheets of 3 × 3 paper patterns are printed on the large size sheet. The large-format sheet printing device 10 includes a transport path for transporting paper sheets, and prints a pattern (various patterns such as patterns) on the surface of the large-format sheet that is transported one by one through the transport path. Is performed for 9 sheets, and then the back side pattern (various patterns such as patterns) is printed on the back side of the large size sheet. In the present embodiment, the large-format sheet will be described in the case where nine sheets of paper patterns are printed, but the present invention is not limited to this. For example, the large-format sheet is 3 × 4, 12 minutes. It may include a paper leaf pattern, or it may include a 4 × 4 16-minute paper leaf pattern.

FIG. 2 is a plan view showing an example of the large size sheet P. The large-format sheet P is a rectangular sheet, which is large enough to print 9 sheets of 3 × 3. This large-format sheet P is conveyed by the large-format sheet printing device 10 along the direction of the arrow in the figure, in other words, the longitudinal direction of the large-format sheet P, and is sequentially formed into nine sheets of paper on the upper surface and the back surface. The corresponding pattern is printed. FIG. 3 is a diagram showing an example of a part of the large format sheet P printed in the large format sheet printing process. As shown in FIG. 3, a pattern of paper leaves on the surface is printed on the large size sheet P.

The large-format sheet inspection device 20 inspects the print quality of the large-format sheet P printed by the large-format sheet printing device 10. The large-format sheet inspection device 20 includes, for example, a transport path (not shown) for transporting paper sheets, captures a large-format sheet P transported on the transport path with a sensor or the like, and uses the captured image as image data. Based on this, it is inspected whether or not the symbols (various symbols such as patterns) are printed in the correct position and size, and whether or not the hues are printed correctly. The large-format sheet P whose quality has cleared a certain standard is processed in the next numbering printing process.

The numbering printing step is a step of printing a number (identification number) for identifying the paper leaves on the pattern of the paper leaves printed on the large-format sheet P. The numbering printing device 30 prints the number at a predetermined position on the paper leaf. FIG. 4 is a diagram showing a transport direction in which the numbering printing device 30 transports the large-format sheet P. The numbering printing apparatus 30 includes a transport path (not shown) for transporting the large format sheet P, and transports the large format sheet P along the longitudinal direction as shown in FIG.

As described above, the large-format sheet P is printed with the patterns of nine 3 × 3 banknotes. The positions of the patterns of these nine sheets of paper are in the order of positions A, B, C on the right side when viewed from the top surface, in the order of positions D, E, F in the center, and in the order of positions G, on the left side. The order is H and I. Therefore, when the large-format sheet P is conveyed to a predetermined position, the numbering printing device 30 prints the numbers at the predetermined positions of the symbols at positions A, D, and G at substantially the same time, and then prints the numbers at the positions B, E, and H. The numbers are printed at predetermined positions of the symbols of No. 1 at substantially the same time, and finally, the numbers are printed at the predetermined positions of the symbols at positions C, F, and I at substantially the same time. In this embodiment, the number is composed of 7-digit alphanumeric characters. The predetermined position where this number is printed is, for example, at the lower right of the pattern on the surface of the paper leaf, as shown in FIG. The numbering printing device 30 executes a process of printing a number on the large-format sheet P in this way every time the large-format sheet P is conveyed.

Here, the correspondence between the positions of the nine symbols on the large-format sheet P and the numbers will be described. In the present embodiment, as will be described later, 9 × 100 paper sheets are produced by cutting a bundle of large-sized sheets in which 100 large-sized sheets P are laminated in a cutting step. Therefore, the paper leaf bundles of each paper leaf are numbered so as to be serial numbers in the stacking direction. In addition, the management server 200 is configured to be able to acquire the correspondence between the positions of the nine symbols and the numbers.

The numbering inspection device 40 is a device that inspects the number printed on the large-format sheet P. The numbering inspection device 40 acquires, for example, an image of a number printed on a large-format sheet P using a sensor such as a camera, and whether alphanumeric characters, positions, colors, etc. are correctly printed from the acquired image. Judge whether or not. In the present embodiment, the numbering inspection device 40 obtains information on the large-format sheet P and the number printed on the large-format sheet P in advance by a predetermined method, and prints the information at a predetermined position on the large-format sheet P. When nine numbers are acquired, it is determined whether or not each of the acquired numbers is correct as the number given to the large-format sheet P, and whether or not the correct number is printed on the large-format sheet. inspect. In this way, the numbering inspection is executed, and the large-sized sheet whose quality has cleared a certain standard is processed in the next cutting step.

The cutting device 50 is a device that cuts the laminated large-sized sheet bundle P (100 sheets in the present embodiment) into each paper leaf. FIG. 6 is a diagram showing an example of a large format sheet bundle P100 in which 100 large format sheets are laminated. In the present embodiment, the cutting device 50 will be described, for example, in the case where the large-sized sheet bundle P100 shown in FIG. 6 is cut into paper sheets for each position.

FIG. 7 is a diagram showing a transport direction in which the cutting device 50 transports the large-sized sheet bundle P100. In the cutting device 50, the large-sized sheet bundle P100 is conveyed along the lateral direction of the large-sized sheet bundle P100 as shown in FIG. When the large-sized sheet bundle P100 conveyed in this way is conveyed to a predetermined position, one row of position ABC is cut, and positions A, B, and C are cut at substantially the same time. Next, when the remaining large-sized sheet bundle P100 is conveyed to the predetermined position, one row of the position DEF is cut, and the positions D, E, and F are cut at substantially the same time. Finally, the position G, position H, and position I of the last row are cut. In this way, the large size sheet bundle P100 is cut into nine paper leaf bundles. FIG. 8 is a diagram showing an example of a paper leaf bundle PA100 at a position A portion cut from a large format sheet bundle P100.

The paper leaves produced as described above are finally inspected in the finishing process. That is, the print inspection device 100 and the management server 200 execute a process of inspecting whether or not the quality of paper sheets is cleared. In the present embodiment, the print inspection device 100 is a quality (including print quality and size) based on a plurality of inspection items for each of nine bundles of paper leaves (100 sheets of paper) set at predetermined positions. It is a device that inspects and discharges to a predetermined position. The management server 200 is a device that accumulates the inspection results of each paper leaf inspected by the print inspection apparatus 100 and processes the accumulated inspection results.

FIG. 9 is a diagram showing an example of the configuration of the print inspection device 100.
As shown in FIG. 9, the print inspection device 100 includes a CPU 101, a ROM 102, a RAM 103, an interface 104, an input unit 105, a display unit 106, an inspection unit 107, and a transport unit 108. The CPU 101 is a control device that controls the entire print inspection device 100 including the inspection unit 107 and the transport unit 108. Various programs for executing the print inspection are stored in the ROM 102. A work area is formed in the RAM 103 when the CPU 101 executes a program stored in the ROM 102. The interface 104 is an interface for enabling data communication with the management server 200. The input unit 105 is a device for the user to input instructions to the print inspection device 100. The display unit 106 is a device that displays predetermined information to the user. The inspection unit 107 is an apparatus for inspecting the quality of paper sheets. The inspection unit 107 determines the type of paper leaves, detects the positive loss of the paper leaves, determines the size, and the like. The transport unit 108 transports a plurality of paper sheets set at predetermined positions one by one to the inspection unit 107, and discharges the paper leaves whose quality has been inspected from the inspection unit 107 to the predetermined discharge unit. In this embodiment, the CPU 101 of the print inspection device 100 and the CPU 201 of the management server 200 constitute the control unit of the print inspection system 1.

The inspection unit 107 includes a sensor for detecting the position of the paper sheets transported by the transport unit 108, an optical sensor for determining the type and positive loss of the paper sheets, a sensor for detecting the size, and the like. The inspection unit 107 uses these to perform inspections on paper sheets according to a plurality of inspection items. Here, the inspection items of the paper leaves are, for example, each RGB color, the hue of the pattern, the position of the pattern, the accuracy of the number, the size, and the like. Even if the inspection items inspected in the large format sheet printing step, the numbering inspection step, and the cutting step described above are duplicated, the inspection unit 107 performs the inspection again. When the inspection unit 107 performs processing according to a plurality of inspection items on the paper sheets passing through the inspection unit 107, the inspection unit 107 transmits the inspection result to the management server 200.

FIG. 10 is a diagram showing an example of the configuration of the management server 200.
As shown in FIG. 10, the management server 200 includes a control unit, CPU 201, ROM 202, RAM 203, interface 204, input unit 205, display unit 206, and storage unit 210. The CPU 201 is a control device that controls the management server 200. Various programs for processing the inspection result received from the print inspection apparatus 100 are stored in the ROM 202. A work area is formed in the RAM 203 when the CPU 201 executes a program stored in the ROM 202. The interface 204 is an interface for enabling data communication with the print inspection device 100. The input unit 205 is a device in which a user inputs an instruction to the management server 200. The display unit 206 is a device that displays predetermined information to the user. The storage unit 210 is a data storage device including a hard disk drive, a flash memory, or the like.

FIG. 11 is a diagram for explaining an example of data used when inspecting paper leaves. As shown in FIG. 11, the data unit 300 includes a correspondence data unit 310, a statistical result data unit 320, and a cause process data unit 330. The data stored in the correspondence data unit 310, the statistical result data unit 320, and the cause process data unit 330 is temporarily stored in a memory (for example, RAM 103 of the print inspection device 100, or management) when inspecting paper sheets. It may be generated in the RAM 203) of the server 200. The data stored in the correspondence data unit 310 and the cause process data unit 330 is stored in a predetermined area (for example, the storage unit 206 of the management server 200), and is used when inspecting paper sheets. It may be acquired from a predetermined area.

The correspondence data unit 310 is information in which the position of the paper leaf on the large-format sheet P and the number printed on the paper leaf are associated with each other. FIG. 12 is a diagram showing an example of the correspondence data unit 310. As shown in FIG. 12, there are nine positions of the paper sheets on the large size sheet P, from position A to position I. The number is stored in association with these nine positions. Further, as shown by the broken line in the figure, nine (that is, one vertical row) of XXXXX101 to XXX901 indicate that they are paper sheets manufactured from one large-format sheet P. For the correspondence relationship stored in the correspondence relationship data unit 310, information when printing a number on the large-format size sheet P by the numbering printing apparatus 30 is used.

The statistical result data unit 320 is information in which the number stored in the correspondence storage unit and the inspection result of the paper sheets identified by the number are associated with each other. FIG. 13 is a diagram showing an example of the statistical result data unit 320. As shown in FIG. 13, the statistical result data unit 320 is generated in association with the inspection item, the number, the position on the large size sheet P, and the inspection result. In addition, there are a plurality of inspection items, and for each inspection item, inspection results classified by position A to position I on the large size sheet P are generated. Further, the field of the inspection result is in a histogram format in increments of 0.4, and the inspection result is stored by incrementing the area corresponding to the inspection result of the paper sheets. FIG. 13 illustrates the inspection results of 900 sheets of paper sheets manufactured from the above-mentioned large-sized sheet bundle P100. The number and position of each leaf (for example, XXX101 to XXX200, position A) are associated with the test result 1, and the number of test results according to the distribution in 0.4 increments is displayed in the test result column. Is remembered. Of the 100 test results of the paper leaf bundle PA100, 40 in the columns 49.2 to 49.6, 50 in the columns 49.6 to 50.0, and 10 test results in the columns 50 to 50.04. Is stored. The inspection results are similarly stored for the other positions B to I. In addition, a threshold value is set for each inspection item. For example, in the case of inspection item 1, when the threshold value is set to 49.6 or more and 50.04 or less, the paper leaf bundle PA100 shown in FIG. 13 satisfies the threshold value. Further, when displaying the inspection results described later, if all the inspection results are within the threshold value at each position, it is determined to be normal, and if even one inspection result is outside the threshold value, the position is determined to be an error. .. Further, at each position, if all the inspection items among the plurality of inspection items are normal, it is finally determined to be normal, and if an error is detected even in one inspection item, the position is determined to be an error. The threshold value can be arbitrarily set according to the inspection item.

Cause Process data unit 330 has generated an error in any of a plurality of processes (large format sheet printing process, numbering printing process, cutting process) according to the arrangement of the positions of paper sheets on the large format sheet P. Information that identifies. FIG. 14 is a diagram showing an example of the cause process data unit 330. As shown in FIG. 14, when an error occurs at the position “ABC”, “DEF”, or “GHI” on the large size sheet, information indicating that there was an error in the cutting process is stored. Further, when an error occurs at the position "ADG", "BEH", or "CFI" on the large format sheet, information indicating that an error has occurred in the large format sheet printing process is stored. The relationship between the arrangement of the position where the error is detected and the process causing the error can be obtained empirically, for example.

Next, the inspection process of the print inspection apparatus 100 will be described. FIG. 15 is a flowchart showing an example of the inspection process of the print inspection apparatus 100. A program for realizing this process is stored in, for example, the ROM 102. Further, in the print inspection device 100, after a plurality of paper sheets are set at predetermined positions by the user, a predetermined instruction such as the type of paper sheets and the number of sheets to be inspected is input from the input unit 105 by the user. , Inspections for paper leaves are performed.

First, the CPU 101 reads the numbers from the paper sheets transported one by one by the transport unit 108 by the inspection unit 107 (ST101), and then executes a predetermined inspection on the paper sheets (ST102). After executing the inspection in this way, the CPU 101 stores the number read from the paper sheets and the inspection result in association with each other (ST103). In the present embodiment, the CPU 101 outputs the number and the inspection result (inspection item and inspection result value) to the management server 200 in association with each other. Then, the CPU 201 of the management server 200 associates the statistical result data unit 220 with the inspection item and the number (in other words, the position on the large format sheet P) and increments the area according to the inspection result.

Next, the CPU 101 determines whether all the inspections have been completed (ST104). The CPU 101 determines, for example, whether or not all the preset inspection items have been completed according to the type of paper sheets designated by the user. If it is determined that all the inspections have not been completed (ST104: NO), the process returns to step ST102 and performs the next inspection of the paper sheets.

On the other hand, when it is determined that all the inspections have been completed (ST104: YES), the CPU 101 determines whether or not the processing of all the paper sheets has been completed (ST105). For example, the CPU 101 makes the determination based on the number of paper sheets (the number of bundles of paper sheets) specified by the user. When it is determined that the processing of all the paper sheets has not been completed (ST105: NO), the processing returns to step ST101, and the CPU 101 performs the processing of steps ST101 to ST104 for the next transferred paper sheets. Run. Further, when it is determined that the processing of all the paper sheets is completed (ST105), the CPU 101 ends this processing. By executing the inspection of the paper leaves in this way, the inspection results of all the set paper leaves are stored in the statistical result data unit 320 of the management server 200.

Next, a process in which the management server 200 displays the inspection result will be described. FIG. 16 is a flowchart showing an example of inspection result display processing. A program for realizing this process is stored in, for example, ROM 203.

The CPU 201 accepts an input in a specified range for displaying the inspection result (ST201). For example, the user instructs the input unit 205 to specify the large format sheet bundle P100. After that, the CPU 201 determines whether or not the execution instruction has been accepted (ST202). When it is determined that the execution instruction has been accepted (ST202), the following processing is executed.

The CPU 201 acquires the inspection result (ST203). That is, when the large-format sheet bundle P100 is specified, the CPU 201 acquires the inspection results of each inspection item of the associated number of the large-format sheet bundle P100 from the statistical result data unit 320 for each position.

Next, the CPU 201 determines whether or not there is a position where an error is detected from the inspection results of the acquired inspection items (ST204). More specifically, the CPU 201 determines whether or not there is an inspection result that deviates from the threshold value for each inspection item from position A to position I, and the CPU 201 determines whether or not there is an inspection result that deviates from the threshold value. Determines that an error has been detected.

When it is determined that the position where the error is detected exists (ST204: YES), the CPU 201 changes the display of the position where the error is detected (ST205). Specifically, when the CPU 201 displays the processing result on the display unit 206, the position on the large format sheet in which the error is detected is different from the position in which the error is not detected, for example, a warm color (red). ) To change.

Next, the CPU 201 identifies the causative process from the arrangement of the position where the error is detected (ST206). Specifically, the CPU 201 searches the cause process data unit 330 for an arrangement that matches the arrangement of the position where the error is detected, and acquires information that identifies the cause process associated with the searched arrangement.

Next, the CPU 201 displays on the display unit 206 that an error has been detected, changes the display of the position where the error is detected, and displays the image of the large format sheet P on the display unit 206 (ST207). The cause process in which the error is detected is displayed on the display unit 206 (ST208).

On the other hand, when it is determined that the position where the error is detected does not exist (ST204: NO), the CPU 201 displays on the display unit 206 that it is normal, and also displays the image of the large format sheet P on the display unit 206 (ST204: NO). ST209). When the processing result is displayed on the display unit 206 in any of steps ST208 and ST209, the CPU 201 ends this processing.

Next, the inspection results displayed on the display unit 206 will be described with reference to FIGS. 17 to 19.
FIG. 17 is a diagram showing an example of the display of the display unit 206 when the position where the error is detected does not exist. As shown in FIG. 17, as the designated range, the numbers XXXXX101 to XXX1000 of the large format sheet bundle P are shown, and the plan view of the large format sheet bundle P is shown in the center. At this time, information indicating the positions A to I on the large size sheet P is also displayed. Since no error is detected, the display of the position I from each position A of the large size sheet P is not changed, and all are the same. Further, on the lower side of the display unit 206, there is a display indicating that the inspection result "The inspection result is passed" is normal.

FIG. 18 is a diagram showing an example of the display of the display unit 206 when an error is detected at the positions A, B, and C. As shown in FIG. 18, as the designated range, XXXXX101 to XX1000, which are the numbers of the large-format sheet bundle P, are shown, and the top view of the large-format sheet bundle P is shown in the center in the case of FIG. Is similar to. However, since an error has been detected at positions A, B, and C, the positions of positions A, B, and C have been changed to warm colors (indicated by diagonal lines in the figure). Since this is the case when an error is detected, a message indicating that there was an error in the inspection result "Inspection result failed" is displayed on the lower side of the display unit 206, and at positions A, B, and C. The causal process according to the arrangement is displayed. Since the cutting process is associated with positions A, B, and C (see Fig. 14), it is probable that the cutting process is the cause because there was an error in "ABC". Information that identifies the cause as the cutting process is displayed.

FIG. 19 is a diagram showing an example of the display of the display unit 206 when an error is detected at the positions A, D, and G. As shown in FIG. 19, as a designated range, XXXXX101 to XXX1000, which are the numbers of the large-format sheet bundle P, are shown, and the top view of the large-format sheet bundle P is shown in the center in the case of FIG. Is similar to. However, since an error has been detected at positions A, D, and G, the positions of positions A, D, and G have been changed to warm colors (indicated by diagonal lines in the figure). Since this is a case where an error is detected, it is displayed that there was an error in the inspection result, and the causal process according to the arrangement of the positions A, D, and G is displayed. On the lower side of the display unit 206, it is displayed that there was an error in the inspection result "Inspection result failed", and the large format sheet printing process corresponds to the positions A, D, and G. Because it is attached, there was an error in "ADG", so it is thought that the cause is in the large format sheet printing process. Information is displayed to identify that the cause is the large format sheet printing process.

According to the print inspection device 100 and the management server 200 described above, the CPU 201 is on the large-format sheet P from the inspection results stored in the statistical result data unit 320 based on the instructions input from the input unit 205. It is determined whether or not an error has occurred for each position of, and based on the result of the determination and the position of the paper sheets stored in the cause process data unit 330, the error occurs in a plurality of processes, that is, a large format. It is possible to easily identify which of the size sheet printing process, the numbering printing process, and the cutting process is the cause of the error.

Further, the CPU 201 can display the cause process indicating the process in which the error has occurred on the display unit 206. As a result, the user can visually recognize the process that is the cause of the error.

The display unit 206 displays the position of the paper sheets of the large-format sheet P, and at the time of the display, the display of the position where the error is detected is changed from the display of the position where the error is not detected to be a warm color. it's shown. Therefore, the user can easily grasp the position where the error is detected. This clarifies the points to be re-examined.

Further, in the above embodiment, the case where the paper leaf inspection system 1 is configured from the print inspection device 100 and the management server 200 is described, but the function realized by the management server 200 is included in the print inspection device 100. As described above, the print inspection device 100 may be used as a paper leaf inspection system.

In the above embodiment, the case where one large-format sheet bundle P100 is printed and inspected is described, but the paper leaf inspection system 1 of the present embodiment processes a plurality of large-format sheet bundles. Is possible. In this case, by assigning a control number to each bundle of large format sheets and managing the information stored in the statistical result data unit 212 in association with this control number, the paper leaf inspection system 1 can be used for many large format sheets. It can also be applied to the case of continuously inspecting paper leaves produced from the bundle P.

Further, in the above embodiment, the display process is executed after the range to be inspected is specified by the user, but the timing of the display process is not limited to this. For example, the CPU 201 may automatically display the inspection result on the display unit 206 at the timing when the inspection of the plurality of paper sheets set at the predetermined positions is completed.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Paper leaf inspection system, 10 ... Large format sheet printing device, 30 ... Numbering printing device, 50 ... Cutting device, 100 ... Printing inspection device, 200 ... Management server, 101, 201 ... CPU, 107 ... Inspection unit, 108 ... transport unit, 206 ... display unit, 210 ... storage unit, 310 ... correspondence data unit, 320 ... statistical result data unit, 330 ... cause process data unit, AI ... position on large format sheet, P ... large format size Sheet, P100 ... Large size sheet bundle

Claims (5)

It is an inspection method of a paper leaf inspection system that cuts a sheet on which a plurality of paper leaves having an identification number are printed into individual paper leaves and inspects the quality of the cut individual paper leaves.
The correspondence between the position of the individual paper leaf on the sheet and the identification number for identifying the individual paper leaf is linked.
The printing state of the individual paper sheets having the identification number is inspected, and at least the correspondence between the identification number and the inspection result of the printing state is linked.
Based on the inspection results of the past printing state, an error occurs in any of a plurality of steps including the arrangement position of the individual paper sheets on the sheet, the pattern printing on the sheet, the identification number printing, and the step of cutting the sheet. Stores the cause process identification information associated with the information that identifies whether or not has occurred in the storage unit.
Identify the process in which the error occurred based on the inspection result and the cause process identification information.
Inspection method of paper leaf inspection system. Display the process in which the error occurred,
The inspection method of the paper leaf inspection system according to claim 1. When displaying the process in which the error has occurred, the position of the individual paper sheets on the sheet is displayed, and at the time of the display, the position where the error is detected is displayed at the position where the error is not detected. Change from the display,
The inspection method of the paper leaf inspection system according to claim 2. The inspection results of the individual paper leaves are a plurality of inspection results obtained by performing a plurality of types of inspections on one individual paper leaf.
If even one of the plurality of inspection results has an inspection result that is determined to be an error, the position of the individual paper sheets that has detected the error on the sheet is determined to be the position of the error.
The inspection method of the paper leaf inspection system according to any one of claims 1 to 3. It is a paper leaf inspection system that cuts a sheet on which a plurality of paper leaves having an identification number are printed into individual paper leaves and inspects the quality of the cut individual paper leaves.
The correspondence between the position of the individual paper leaf on the sheet and the identification number for identifying the individual paper leaf is linked, the printing state of the individual paper leaf having the identification number is inspected, and at least the identification number is used. And the correspondence of the inspection result of the printing state, and from the inspection result of the past printing state, the arrangement position of the individual paper sheets on the sheet, the pattern printing on the sheet, the identification number printing, and the sheet The cause process identification information associated with the information specifying which of the plurality of processes including the cutting process has caused the error is stored in the storage unit, and the inspection result and the cause process identification information are stored. A control unit for identifying the process in which the error occurred based on the error is provided.
Paper leaf inspection system.

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