JP2010121941A - Inspection apparatus and method for print position displacement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection method and apparatus for print position displacement, capable of guaranteeing the quality of entire printed matters and removing a defective printed matter. <P>SOLUTION: The inspection method for print position displacement applies to the printed matters, obtained by printing the variable information containing register marks, against the printed matter, on which the fixed information containing timing marks, register marks and a print number are printed beforehand. The method includes: a timing mark detection step for detecting the timing mark printed on the running printed matters; a flashing light emission step for emitting flashing light on the detection timing and for illuminating the register mark area where the fixed information and the register mark and the print number of the variable information are adjacently printed; an imaging step for obtaining the image by taking an image of the register mark area on the flashing light emission; and an inspection information log storage step for obtaining the print misregistration quantity and the print number based on the picked-up image and storing by attaching a string as an inspection information log. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention belongs to a technical field for detecting a printing position shift. In particular, the present invention relates to a printing misregistration inspection apparatus and method for detecting a misalignment of a printing position between fixed information and variable information in a printed matter obtained by printing variable information on a printed matter on which fixed information is printed in advance.

  On the printed matter on which the fixed information is printed as the common information, the variable information as the unique information of each printed matter is overprinted using an ink jet printer or the like. For example, in a direct mail production line, variable information such as an address name as a destination and individual notification information (credit card usage details) is printed on encapsulated paper (form). Also, in the study collection and text production line at the cram school, booklets with various contents according to the selected subjects and the progress of learning are printed in the same lot. In such a printed matter, as a matter of course, there is an allowable range for the deviation amount of the printing position between the fixed information and the variable information in the printed matter, and there should be no deviation amount that deviates from that.

As a conventional method for inspecting the quality of printed matter, a method is known in which a predetermined test mark is printed on a sheet by a printer and the printing accuracy is inspected. For example, hold the paper on which the test mark is printed by the printer on the table, detect both corners of the front edge of the paper with the camera, measure the inclination angle of the front edge of the paper, and then use the camera as the measurement start point A method is known in which test marks serving as measurement end points are detected, the positions of the start and end test marks are measured, and the printing accuracy is measured by recording and calculating these measurement values (Patent Document 1). However, this method is too inefficient to perform quality assurance inspection of a printer output product (printed matter) that uses continuous paper and prints at a high speed. In addition, there are various factors that cause a shift in the printing position, and there may be sudden fluctuations. Therefore, there is a problem that 100% quality assurance cannot be performed by the sampling method.
Further, as a method for inspecting the quality of a conventional printed matter, one of n colors is set as a reference color, and a printing register mark of the reference color is arranged at a predetermined position at (n-1) locations in the printed matter. Each of the (n-1) color printing registration marks is printed on a printed material so that the printing registration marks corresponding to the printing registration marks of the reference color are arranged in the vicinity thereof. (N-1) Print registration misregistration amount is detected based on (n-1) captured images obtained by individually capturing (n-1) predetermined positions where color printing registration marks are printed. A printing misregistration amount detection device is known (Patent Document 2). However, this method is detection for the purpose of controlling the printing press so that the printing misregistration amount is within the allowable range. Therefore, it is difficult to identify and remove the printed matter when a deviation amount outside the allowable range occurs.
JP-A-2-88907 JP2002-137368

  The present invention has been made to solve the above problems. The purpose is to be able to efficiently carry out quality assurance inspections of printer output products (printed products) that use continuous paper and print at high speed, and to guarantee the quality of all printed products (total number). It is an object of the present invention to provide an inspection method and an inspection apparatus capable of specifying and removing a printed matter when a deviation amount outside the range occurs.

A printing position deviation inspection device according to claim 1 of the present invention is a printing position between the fixed information and the variable information in a printed material obtained by printing variable information on a printed material on which fixed information is printed in advance. A printing position misalignment inspection apparatus for detecting a misalignment, wherein the fixed information includes a timing mark, and detects that the timing mark printed on the traveling printed material has passed a predetermined position, and a timing mark detection signal A timing mark detection means for outputting the fixed information, the fixed information includes a fixed information printing register mark, and the variable information includes a variable information printing register mark printed adjacent to the fixed information printing register mark. The timing mark detection signal is input and light is emitted instantaneously, and the fixed information printing registration mark and the variable information printing registration mark are printed. An instantaneous light emitting means for illuminating a mark area; and an imaging means for obtaining a captured image obtained by simultaneously imaging the fixed information printing register mark and the variable information printing register mark by imaging the register mark area when the instantaneous light is emitted. The printing position deviation is inspected based on the captured image.
A printing misalignment inspection apparatus according to claim 2 of the present invention is the printing misalignment inspection apparatus according to claim 1, wherein the fixed information printing register mark and the variable information printing register mark in the captured image are extracted and registered. A registration mark extraction unit for obtaining a mark extraction image, a registration mark coordinate calculation unit for calculating coordinates of the extracted fixed information printing registration mark and the variable information printing registration mark, and the calculated fixed information printing registration mark Misregistration amount calculating means for calculating a misregistration amount from a difference between a detection difference that is a difference between the coordinates of the variable information printing registration mark and a reference difference that is a preset reference value, and the misregistration amount Printing position deviation quality determination means for determining whether or not the printing position deviation is acceptable depending on whether or not is within an allowable range.
According to a third aspect of the present invention, there is provided the printing misalignment inspection apparatus according to the first or second aspect, wherein the variable information includes a print number for specifying one printed matter among the plurality of printed matters. The print number is printed in the register mark area adjacent to the fixed information print register mark and the variable information print register mark, and the print number in the captured image is extracted to obtain the print number extracted image. A printing number extracting unit for obtaining the printing number, a printing number identifying unit for identifying the printing number as the extracted image as a printing number as a number, and linking the information obtained by the inspection with the printing number as the number Thus, inspection information log storage means for storing the inspection information log is provided.
According to a fourth aspect of the present invention, there is provided the print misregistration inspection apparatus according to the third aspect, wherein the print information, the pass / fail judgment, and the print misregistration amount are included in the inspection information log. A printing misregistration inspection apparatus characterized by being included.
According to a fifth aspect of the present invention, there is provided a printing misregistration inspection method including a variable information printing registration mark for a printed matter in which fixed information including a timing mark, a fixed information printing registration mark, and a printing number is printed in advance. A printing misalignment inspection method for detecting misalignment of a printing position between the fixed information and the variable information in a printed matter obtained by printing information, wherein a timing mark printed on a traveling printed matter has a predetermined position. A timing mark detection process for detecting passing, and a moment for illuminating a registration mark area in which the fixed information printing registration mark, the variable information printing registration mark, and the printing number are printed adjacent to each other and instantaneously emit light at the detection timing. A light emission process, an imaging process for obtaining a captured image by imaging the register mark area when the instantaneous light emission occurs, and Is obtained to have a, and examination information log saving process of saving the acquired string attached to examination information log and the printing number and the print position deviation amount Zui.

According to the printing misalignment inspection apparatus of the first aspect of the present invention, it is detected by the timing mark detection means that the timing mark printed on the printed material that has traveled has passed the predetermined position, and the timing mark detection signal is input. The registration mark area where the fixed information printing registration mark and the variable information printing registration mark are printed is illuminated by the instantaneous light emitting means that emits light instantaneously, and the registration mark area when the instantaneous light emission is performed is imaged by the imaging means. A picked-up image obtained by picking up the mark and the variable information printing register mark at the same time is obtained, and the print position deviation is inspected based on the picked-up image. Therefore, it is possible to efficiently perform quality assurance inspection of printer output products (printed materials) that use continuous paper and print at high speed, and to perform print position misalignment inspection that can perform quality assurance of all printed materials (total number). An apparatus is provided.
According to the printing misalignment inspection apparatus according to claim 2 of the present invention, in the printing misalignment inspection apparatus according to claim 1, the fixed information printing register mark and the variable information printing register mark in the captured image by the register mark extracting means. Is extracted, a registration mark extraction image is obtained, the coordinates of the fixed information printing registration mark and variable information printing registration mark extracted by the registration mark coordinate calculation means are calculated, and the fixed information printing registration calculated by the misregistration amount calculation means is calculated. The amount of print misalignment is calculated from the difference between the detection difference that is the difference between the coordinates of the mark and the variable information printing register mark and the reference difference that is a preset reference value, and the misalignment amount is determined by the print misalignment quality determination unit. Whether or not the print position is misaligned is determined depending on whether or not is within an allowable range. Therefore, it is possible to inspect the printing position deviation based on the captured image.
According to the printing misalignment inspection apparatus according to claim 3 of the present invention, in the printing misalignment inspection apparatus according to claim 1 or 2, the variable information includes a print number for specifying one printed material among a plurality of printed materials. The print number is printed in the register mark area adjacent to the fixed information print register mark and the variable information print register mark, and the print number in the captured image is extracted by the print number extracting means. The print number as the image extracted by the print number identifying means is identified as a print number as a number, and the information obtained by the inspection by the inspection information log storage means is associated with the print number as a number. Saved as inspection information log. Therefore, when a deviation amount outside the allowable range occurs, the printed matter can be specified, and can be removed or reprinted by the specification.
According to the printing misalignment inspection apparatus of the fourth aspect of the present invention, in the printing misalignment inspection apparatus according to the third aspect of the invention, the inspection information log includes a print number, pass / fail judgment, and print misalignment amount. ing. Therefore, it is possible to know inspection information on a specific printed matter from the inspection information log.
According to the printing misregistration inspection method of claim 5 of the present invention, the variable information printing registration mark is applied to the printed matter on which the fixed information including the timing mark, the fixed information printing registration mark, and the printing number is printed in advance. A printing misalignment inspection method for detecting a misalignment of a printing position between the fixed information and the variable information in a printed matter obtained by printing variable information including the printed information, which is printed on a printed matter traveling in a timing mark detection process. The registration mark area where the fixed timing print registration mark, the variable information printing registration mark, and the printing number are printed adjacent to each other and the fixed information printing registration mark and the printing number are printed in the instantaneous light emission process. Is captured and the registration mark area is captured when instantaneous light emission occurs during the imaging process. In the information log saving process, the print position deviation amount and the print number are acquired based on the captured image, and these are linked and saved as an inspection information log. Therefore, it is possible to efficiently carry out quality assurance inspections of printer output products (printed products) that use continuous paper and print at high speed, and to guarantee the quality of all printed products (total number). When a deviation amount that deviates occurs, an inspection method capable of specifying and removing the printed matter is provided.

Next, embodiments of the present invention will be described with reference to the drawings. An example of the configuration in the print misregistration inspection of the present invention is shown in FIGS. FIG. 1 shows a side view of the detection system, and FIG. 2 shows a top view of the detection system. 1 and 2, 1 is a timing sensor, 2 is a camera, 3a is a strobe light emission lamp, 3b is a strobe light emission power source, 4 is a printing misalignment inspection apparatus body, 4a is a data processing unit, 4b is a keyboard, and 4c is a mouse. 4d is a display monitor, 100 is a printed matter, and 200a, 200b, and 200c are parts of the printer.
1 and 2 show only a part 200a, 200b and 200c of the printer, the printed material 100 is set in the printer. The printed material 100 travels in the direction of the arrow indicating the travel direction in FIG. 2 in accordance with the progress of printing by the printer. Above the travel route, a timing sensor 1, a camera 2, and a strobe light emission lamp 3a are arranged.

An example of the timing mark and register mark area printed on the printed material 100 is shown in FIG. In FIG. 3, 101 is a timing mark, 110 is a register mark area, 111 is a fixed information print register mark, 112 is a variable information print register mark, and 113 is a print number.
The printed material 100 is a printed material obtained by further printing variable information with a printer on a printed material on which fixed information is printed in advance. The fixed information includes a fixed information printing register mark 111 and a timing mark 101. The variable information includes a variable information printing registration mark 112 and a printing number 113 which are printed adjacent to the fixed information printing registration mark 111. In the printed material 100, an area in which the fixed information printing registration mark 111, the variable information printing registration mark 112, and the printing number 113 are printed is referred to as a registration mark area 110 here.

The timing sensor 1 is a timing mark detection unit that detects that the timing mark 101 printed on the traveling printed material 100 has passed a predetermined position and outputs a timing mark detection signal. As the timing sensor 1, a well-known photoelectric sensor having a light projecting unit that projects light onto the surface of the printed material 100 and a light receiving unit that receives the reflected light can be used.
The strobe light emission lamp 3a and the strobe light emission power source 3b receive a timing mark detection signal output from the timing sensor 1 and emit light instantaneously, and a fixed information printing registration mark 111, a variable information printing registration mark 112, and a printing mark 113 are printed. Instantaneous light emitting means for illuminating the region 110. The strobe light-emitting lamp 3a is a light-emitting unit of the instantaneous light-emitting means, and the strobe light-emitting power source 3b is a power supply part that supplies power for causing the strobe light-emitting lamp 3a to emit light instantaneously at the timing when the timing mark detection signal is input. As the strobe light emitting lamp 3a, a xenon lamp, a light emitting diode, or the like can be used.

  The camera 2 is an imaging unit that obtains a captured image obtained by capturing the fixed information printing registration mark 111, the variable information printing registration mark 112, and the printing number 113 simultaneously by imaging the registration mark area 110. The timing sensor 1 and the strobe light emitting lamp 3a are matched so that the time when the timing mark 101 matches the detection area of the timing sensor 1, that is, a predetermined position, and the time when the register mark area 110 matches the irradiation area of the strobe light emitting lamp 3a. , And a timing mark 101 and a register mark area 110 are arranged. In addition, the camera 2 is arranged so that the imaging area of the camera 2 and the registration mark area 110 coincide with each other at the time of coincidence. With these arrangements, the camera 2 captures the registration mark area 110 in synchronization with the travel of the printed material 100 and outputs a captured image. As the camera 2, an area sensor camera using an image sensor such as a charge coupled device (CCD) or a metal oxide semiconductor (MOS) can be used.

The printing misalignment inspection apparatus body 4 is a part that performs control and data processing in the printing misalignment inspection apparatus of the present invention. The printing misalignment inspection apparatus body 4 can be realized by hardware and software in a data processing apparatus such as a PLC (Programmable Logic Controller), a personal computer, or the like. In the example shown in FIG. 1, the printing misalignment inspection apparatus main body 4 is a personal computer including a data processing unit 4a, a keyboard 4b, a mouse 4c, a display monitor 4d, and the like. The timing sensor 1, the camera 2, and the strobe light emission power source 3b are connected to an I / O (Input Output) interface board of the data processing unit 4a.
The printing misalignment inspection apparatus main body 4 performs data processing for inspecting the printing misalignment based on the captured image of the registration mark area 110 captured by the camera 2. An example of this data processing will be described. The data processing unit 4a of the printing misalignment inspection apparatus main body 4 includes a register mark extracting unit, a register mark coordinate calculating unit, a misregistration amount calculating unit, a pass / fail determining unit, a printing number extracting unit, a printing number identifying unit, by hardware and software. Implement inspection information log storage means, etc.

The registration mark extraction means performs data processing for extracting a fixed information printing registration mark and a variable information printing registration mark in the captured image to obtain a registration mark extraction image. For example, a captured image that is a grayscale image is binarized with a predetermined threshold. The binarized image is enlarged / reduced to remove isolated points (noise). Then, a labeling process for assigning a predetermined numerical value to the pixel based on the continuity of the pixel value of the register mark portion that is “1” or “0” is performed. Thereby, different numerical values are assigned to the fixed information printing registration mark and the variable information printing registration mark. That is, a register mark is extracted.
The registration mark coordinate calculation means calculates the coordinates of the extracted fixed information printing registration mark and variable information printing registration mark. For example, in the case of a circular registration mark as shown in FIG. 3, the registration mark can be defined as the barycentric coordinates of all the pixel coordinates constituting the registration mark. The method of calculating the coordinates of the registration mark by calculating the coordinates of the center of gravity is a method adapted to the registration marks of many other shapes. Further, when the register mark has a cross shape, the least square method or the like is applied from pixel coordinates constituting each orthogonal line segment to obtain an expression for each line segment, and the register mark can be defined as the intersection.

The misregistration amount calculation means calculates the misregistration amount from the difference between the calculated difference between the coordinates of the fixed information printing register mark and the variable information printing register mark and the reference difference that is a preset reference value. Calculate. As the reference value, a design value at which the amount of misalignment becomes zero or an actual measurement value at which the amount of misalignment in the printed material 100 becomes zero is set in the printing misalignment inspection apparatus.
The print misregistration determination unit determines whether the print misregistration is acceptable based on whether the misregistration amount is within an allowable range. The allowable range is set in the printing misalignment inspection apparatus according to the required quality of each printed matter 100.
The print number extracting means performs data processing for extracting a print number in the captured image and obtaining a print number extracted image. The extraction method is the same as the extraction method in the register mark extraction means described above.
The print number identifying means identifies the print number as the extracted image as a print number as a number. The identification method can be performed by applying a known method such as pattern matching.
The inspection information log storage means associates the information obtained by the inspection with a print number as a number, and stores it in the storage unit (memory) in the data processing unit 4a as an inspection information log. The inspection information log includes a print number, pass / fail judgment, and print position deviation amount.

The configuration has been described above. Next, the operation in the printing misalignment inspection apparatus of the present invention will be described. FIG. 4 is a flowchart showing the process of printing misalignment processing in the printing misalignment inspection apparatus of the present invention.
First, in step S1 (with timing mark detection signal?) In FIG. 4, it is determined whether or not the timing sensor 1 has output a timing mark detection signal, that is, whether or not the timing sensor 1 has detected the timing mark 101. . If not detected, step S1 is repeated (no). If detected, the process proceeds to step S2 (yes). That is, it waits until the timing sensor 1 detects the timing mark 101, and if it detects, it will progress to the next process.
Next, in step S2 (instantaneous light emission command output), the data processing unit 4a inputs a timing mark detection signal output from the timing sensor 1. Then, the data processing unit 4a outputs an instantaneous light emission command output to the strobe light emission power source 3b.
Next, in step S3 (instant light emission), the strobe light emission power source 3b inputs an instantaneous light emission command output. The strobe light emission power source 3b supplies power for causing the strobe light emission lamp 3a to emit light instantaneously. The strobe light emitting lamp 3a emits instantaneous light upon receiving the power supply. The registration mark area 110 on which the fixed information printing registration mark 111, the variable information printing registration mark 112, and the printing number 113 are printed is illuminated by the instantaneous light emission.

Next, in step S4 (captured image reading), the data processing unit 4a reads an image captured by the camera 2. For example, in an example in which imaging is performed asynchronously, the camera 2 repeatedly performs imaging at a predetermined cycle. When there is no instantaneous light emission within the period, the captured image is an underexposed captured image. When there is instantaneous light emission within the period, the captured image is obtained with a proper exposure. The camera 2 is arranged so that the imaging area of the camera 2 and the registration mark area 110 coincide with each other at the time of instantaneous light emission. Therefore, the captured image read immediately after the instantaneous light emission is a captured image obtained by capturing the register mark area 110. Although the printed material 100 is running, a captured image without image flow is obtained by instantaneous light emission.
Next, in step S5 (extraction of register mark and print number), the register mark extracting means of the data processing unit 4a extracts the fixed information print register mark and the variable information print register mark in the captured image to obtain a register mark extracted image. Further, the print number identifying means of the data processing unit 4a extracts the print number in the captured image to obtain a print number extracted image.
Next, in step S6 (positional deviation calculation), the registration mark coordinate calculation means of the data processing unit 4a calculates the coordinates of the extracted fixed information printing registration mark and variable information printing registration mark. Further, the misregistration amount calculation means of the data processing unit 4a calculates a difference between the calculated fixed information print registration mark coordinate and the variable information print registration mark coordinate and a reference difference that is a preset reference value. The printing position deviation amount is calculated from the difference.
Next, in step S7 (print number identification), the print number identifying means of the data processing unit 4a identifies the print number as the extracted image as a print number as a number.

Next, in step S8 (is the misregistration amount within an allowable range?), The print misregistration determination unit of the data processing unit 4a determines whether the misregistration is acceptable based on whether the misregistration amount is within an allowable range. When the amount of positional deviation is not within the allowable range, that is, when the defect is determined, the process proceeds to step S9 (no). When the amount of positional deviation is within the allowable range, that is, when the determination is good, the process proceeds to step S10 (yes).
Next, in step S9 (defect determination output), the data processing unit 4a performs defect determination output. The defect determination output is output as display data of inspection information on the display monitor 4d. In addition, a warning is output to the alarm device for warning notification to the printer operator.
Next, in step S10 (good judgment output), the data processing unit 4a performs a good judgment output. The good judgment output is output as display data of examination information on the display monitor 4d.
Next, in step S11 (inspection information log generation / storage), the inspection information log storage means of the data processing unit 4a performs data processing as an inspection information log by associating information obtained by inspection with a print number as a number. The data is stored in a storage unit (memory) in the unit 4a. The inspection information log includes a print number, pass / fail judgment, and print position deviation amount.
Next, in step S12 (end?), It is determined whether printing of variable information by the printer continues or has ended. When it continues, it returns to step S1 and repeats the subsequent steps described above. When it is finished, the printing misregistration inspection process is finished (END).

An example of the inspection information log is shown in FIG. In FIG. 5, the inspection information of each sheet in the printed material 100 is shown in units of one line. In the right column of FIG. 5, numerical values “21” to “50” are shown. This numerical value is a number assigned to one batch of printed material (booklet) consisting of a plurality of printed materials (sheets). The column adjacent to the right of the numbered column shows the inspection information of the “second sheet” printed matter.
As the contents of the inspection information, “positional deviation NG” indicates that the printing positional deviation is not within the allowable range and the defect is determined.
“Horizontal: [5.00 mm]” indicates that the difference between the coordinates of the fixed information printing register mark and the variable information printing register mark in the traveling direction of the printed material 100 is 5.00 mm. In the foregoing description, it has been described that the reference value is set in the printing misalignment inspection apparatus as a design value where the misregistration amount becomes zero or an actual measurement value where the misregistration amount in the printed material 100 becomes zero. However, in the example shown in FIG. 5, the reference value is set so as to be 5.00 mm when the positional deviation amount is zero. That is, zero is set as the reference value.
“High: [0.16 mm]” indicates that the difference in coordinates between the fixed information printing register mark and the variable information printing register mark in the traveling direction of the printed material 100 is 0.16 mm.

It is a figure which shows an example of the structure (a detection system is a side view) in the printing position shift inspection of this invention. It is a figure which shows an example of the structure (a detection system is a top view) in the printing position shift inspection of this invention. It is a figure which shows an example of the timing mark currently printed on printed matter, and a registration mark area | region. It is a flowchart which shows the process of the printing misalignment process in the printing misalignment inspection apparatus of this invention. It is a figure which shows an example of the test | inspection information log in the printing position shift test | inspection of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Timing sensor 2 Camera 3a Strobe light emission lamp 3b Strobe light emission power supply 4 Printing position shift inspection apparatus main body 4a Data processing part 4b Keyboard 4c Mouse 4d Display monitor 100 Printed matter 101 Timing mark 110 Registration mark area 111 Fixed information printing Registration mark 112 Variable information printing Register mark 113 Print number 200a, 200b, 200c Part of printer

Claims (5)

A printing misalignment inspection device that detects a misalignment of a printing position between the fixed information and the variable information in a printed matter obtained by printing variable information on a printed matter on which fixed information is printed in advance,
The fixed information includes a timing mark, a timing mark detection means for detecting that the timing mark printed on the printed printed material has passed a predetermined position and outputting a timing mark detection signal;
The fixed information includes a fixed information printing register mark, and the variable information includes a variable information printing register mark printed adjacent to the fixed information printing register mark, and the timing mark detection signal Instantaneous light emitting means for illuminating a registration mark area where the fixed information printing registration mark and the variable information printing registration mark are printed by instantaneous light emission by inputting;
Imaging means for obtaining a captured image obtained by simultaneously imaging the fixed information printing registration mark and the variable information printing registration mark by imaging the registration mark area when the instantaneous light emission occurs;
A printing misalignment inspection apparatus, characterized in that a printing misalignment is inspected based on the captured image. The printing misalignment inspection apparatus according to claim 1,
Registration mark extraction means for extracting the fixed information printing registration mark and the variable information printing registration mark in the captured image to obtain a registration mark extraction image;
Register mark coordinate calculating means for calculating coordinates of the extracted fixed information printing register mark and the variable information printing register mark;
A position at which a printing position deviation amount is calculated from a difference between a detection difference that is a difference between the calculated coordinates of the fixed information printing registration mark and the coordinates of the variable information printing registration mark and a reference difference that is a preset reference value. Deviation amount calculation means;
A print misalignment pass / fail judgment means for judging whether or not the print misalignment is acceptable depending on whether the misregistration amount is in an allowable range;
A printing misregistration inspection apparatus comprising: In the printing misalignment inspection apparatus according to claim 1 or 2,
The variable information includes a print number for identifying one print product among the plurality of print products, and the print number is adjacent to the fixed information print register mark and the variable information print register mark in the register mark area. Printed,
Print number extraction means for extracting the print number in the captured image and obtaining a print number extraction image;
A print number identifying means for identifying the print number as the extracted image as a print number as a number;
A printing misregistration inspection apparatus comprising: an inspection information log storage unit that associates information obtained by the inspection with a print number as the number and stores the information as an inspection information log. In the printing misalignment inspection apparatus according to claim 3,
The print misregistration inspection apparatus, wherein the inspection information log includes the print number, the pass / fail determination, and the print misregistration amount. The fixed information and the variable information in the printed material obtained by printing the variable information including the variable information printing registration mark on the printed material on which the fixed information including the timing mark, the fixed information printing registration mark, and the printing number is printed in advance. Printing position deviation inspection method for detecting a printing position deviation between
A timing mark detection process for detecting that a timing mark printed on the traveling printed material has passed a predetermined position;
An instantaneous light emission process of illuminating a register mark area in which the fixed information printing register mark, the variable information printing register mark, and a print number are printed adjacently by instantaneously emitting light at the detection timing;
An imaging process of obtaining a captured image by imaging the register mark area when the instantaneous light emission;
An inspection information log storage process for acquiring and associating the print position deviation amount and the print number based on the captured image and storing the acquired information as an inspection information log;
A printing misregistration inspection method characterized by comprising:

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