JPH10337850A - Method for imparting identification of printing plate, method and apparatus for confirming fixing of press plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for imparting identification of a press plate, and method and apparatus for confirming the fixing of the press plate in which an identification of the press plate can be imparted automatically and erroneous fixing of the press plate can be detected surely and rationally. SOLUTION: An identification area comprising two columns and a plurality of rows is sectioned at a desired position of press plates 3A, 3B, 3C, 3D and a required code is marked with an ink of different color from the press plates 3A, 3B, 3C, 3D in the identification area of first column and desired row. When a required code is not marked in the identification area of first column, a required code is marked with an ink of different color from the press plates 3A, 3B, 3C, 3D in the identification area of second column marked with no code.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for identifying a printing plate when mounting an appropriate number of printing plates on a plate cylinder of a printing press, and for checking and mounting the printing plate. And its device.

[0002]

2. Description of the Related Art Conventionally, in newspaper printing, one or two folding machines and about eight to ten rotary machines are connected and combined.
One unit (usually, one set) of rotary press trains is configured. In a large-scale printing factory, a plurality of sets of rotary press trains are installed, and one or a plurality of newspapers of different paper organization are allocated to the newspaper distribution districts according to the number of print copies. The mounting position of the printing plate to be mounted on each rotary press in one set is determined by rotary press operating conditions such as the number of pages of a newspaper, the number of rotary presses in a set, and the type of rotary press.

For example, to print a 32-page newspaper, 4
If one rotary press is used, eight types of printing plates are mounted on one plate cylinder. Further, two plates of the same printing plate are mounted on the same plate cylinder. Then, a total of 64 printing plates are required to print a 32 page newspaper. Therefore, when the operator (operator) mounts a large number of printing plates for each rotary press, there is a risk that the printing plates may be incorrectly mounted.

Conventionally, in order to prevent such erroneous mounting of the printing plate, the operator relies on the attention of the operator when mounting the printing plate and the visual inspection of the operator immediately after the start of printing. Recently, due to the rationalization of personnel, the amount of work performed by one operator has been increased and the work density has been increased. At the same time, the number of newspaper pages has been increased, the printing speed has been improved, and so on. In addition, if an incorrect mounting of a printing plate is found by this paper inspection work, it is necessary to immediately stop the rotary press train and remount the incorrectly mounted printing plate, which is an extremely complicated operation.

[0005]

In the method in which the erroneous mounting of the printing plate is detected by the judgment of the operator, the possibility of the erroneous mounting cannot be reduced to zero due to the misunderstanding of the operator. In addition, the paper inspection operation itself is complicated, and the re-attachment of a printing plate that is found and incorrectly mounted by the paper inspection operation is more complicated. For this reason, without depending on the judgment of the operator,
Moreover, it is strongly desired that erroneous mounting of the printing plate can be reliably detected before printing is started.

Therefore, the present inventors have already proposed, for example, Japanese Patent Laid-Open No. 5-16938 as a printing plate erroneous mounting detection device capable of reliably detecting erroneous mounting of a printing plate. Intricate and not complete.

Recently, a bar code is printed and displayed on the surface of a printing plate with ink, and the bar code is read by a bar code reader to prevent erroneous mounting of the printing plate. In the means for preventing erroneous mounting by a bar code, small pores are present on the surface of the printing plate and the surface is rough, so when printing with a water-soluble ink for a bar code, the drying property is poor, and it spreads due to a capillary phenomenon and spreads. , It is difficult to create a barcode. Also, 1 for barcode
It is necessary to use an infrared barcode reader on a one-to-one basis, and reading a barcode on a printing plate requires a plurality of barcode readers, which increases costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus for automatically identifying a printing plate, and to more reliably and rationally detect erroneous mounting of a printing plate. It is an object of the present invention to provide a mounting confirmation method and a device therefor.

[0009]

According to a first aspect of the present invention, there is provided a printing plate identifying and assigning method according to the first aspect of the present invention, wherein an identifying area including two columns and a plurality of rows is defined at a desired position on the printing plate. If the required code in the identification area of the desired row in the first column is marked with ink of a color different from the color of the printing plate and the required code is not marked in the identification area of the first column, The identification area of the second column row, which is not marked, is provided with a necessary code using ink of a color different from the color of the printing plate.

[0010] Therefore, in the identification area consisting of two columns and a plurality of rows divided at a desired position of the printing plate, the identification area of the desired row in the first column is required to have a code required by ink of a color different from the color of the printing plate. Is marked. In addition, when the required code is not marked in the identification area of the first row, the identification area of the second row without the code is made of a color different from the color of the printing plate. By assigning the necessary code with ink, the cylinder position identification code is reliably and clearly printed and displayed at the desired position of the printing plate without blurring.

According to a second aspect of the present invention, there is provided a printing plate identification providing method according to the first aspect, wherein
It is characterized in that the color of the code required for the identification area in the second column is different. .

[0012] Therefore, the necessary codes for the identification areas in the first and second columns are marked with inks of different colors, so that when the necessary codes are imaged later, the code locations may be stained or blurred. Is easily, reliably and accurately taken without mistake.

According to a third aspect of the present invention, there is provided a printing plate mounting / checking method for mounting and checking an appropriate number of printing plates on a plate cylinder of a printing press. (B) a conveying step of conveying the printing plate selected from the cylinder position identification code including the cylinder position information to a position corresponding to the ink jet printer; A required code is printed and displayed by an ink jet printer with ink of a color different from the color of the printing plate in an identification area of a desired row in the first column of the identification area partitioned at a desired position on the surface of the printing plate, If the required sign is not in the identification area of the first row,
A print display step of printing and displaying a required code by an ink jet printer with an ink having a color different from the color of the printing plate on the identification area of the second column row without the code; (C). A mounting step of mounting a printing plate, on which a required code is printed and displayed on a front surface, in a predetermined position of the plate cylinder, (D). Repeating the above steps (A) to (C), and After the printing plate has been mounted on the plate cylinder, an imaging step of capturing the actual required code of each printing plate mounted on the plate cylinder with a color imaging means for comparison, (E). A comparison / collation step of comparing and collating an actual trunk position identification code composed of necessary codes with a preset trunk position identification code stored in advance. is there.

Therefore, the printing plate selected from the cylinder position identification code including the mounting position information is conveyed to a position corresponding to the ink jet printer. At this position, the identification area of the first row of the identification area composed of two columns and a plurality of rows partitioned at a desired position on the surface of the printing plate by the ink jet printer from the color different from the color of the printing plate. The necessary code is printed and displayed with the new ink. When the necessary code is not marked in the identification area of the first row, the color of the printing plate is added to the identification area of the second row without the code by the ink jet printer. The necessary codes are printed and displayed with inks of different colors. On the basis of the cylinder position identification code printed and displayed, for example, a printing plate is mounted at a desired position of the plate cylinder designated by the operator.

When an appropriate number of printing plates are mounted on the plate cylinder in the above-described manner, the actual necessary code of each printing plate, which is the cylinder position identification code of the actual printing plate mounted on the plate cylinder, is checked. Are simultaneously imaged by the color image pickup means. The actual torso position identification code, which is a necessary code imaged by the color image pickup means for comparison, is compared with a preset torso position identification code inputted and stored in advance.

Thus, even if the operator mistakenly mounts each printing plate on the plate cylinder, the actual cylinder position identification code and the preset cylinder position identification code are compared and collated. Since the erroneous mounting is automatically detected at the time, the printing press can be operated with ease. Moreover, the ink of the cylinder position identification code printed and displayed on the surface of each printing plate is erased by, for example, dampening solution, and does not affect printing.

According to a fourth aspect of the present invention, there is provided a printing plate mounting / checking method according to the second aspect.
(F). After operating the printing press, when removing the printing plate at a desired position on the plate cylinder and replacing it with a new printing plate, a new printing plate is subjected to the above-described steps (A) to (D). After mounting at a desired position on the plate cylinder, a step of comparing at least the actual cylinder position identification code of the newly mounted printing plate and the cylinder position identification code of a preset and stored setting, It is characterized by comprising.

Therefore, when the printing plate is mounted on a desired position of the plate cylinder, a suitable number of printing plates are mounted on the plate cylinder, and the printing press is operated, the cylinder position displayed on the surface of each printing plate is displayed. Since the ink with the identification code is erased in a short time with, for example, a fountain solution, it is operated without affecting printing. Then, when a desired printing plate among the printing plates mounted during the operation is removed and a new printing plate is mounted in the steps (A) to (D), the actual cylinder of the new printing plate is mounted. At least the position identification code is compared with a preset trunk position identification code.

Thus, the cylinder position identification code of the replaced printing plate is compared and collated in a short time, and the ink is erased in a short time. In addition, a case where a wrong mounting is performed at a place where the other body position identification code is deleted is also detected.

According to a fifth aspect of the present invention, there is provided a printing plate mounting / checking device for mounting and checking an appropriate number of printing plates on a plate cylinder of a printing press. A higher-level control device having a cylinder position identification code and a memory for previously inputting and storing a set cylinder position identification code including a mounting cylinder position on the printing plate; and (B) a cylinder from the cylinder position identification code and the memory. A control device for the ink jet printer controlled based on the position identification code; and (C) a control device for the ink jet printer which is controlled by the control device for the ink jet printer. The necessary code is printed and displayed in the identification area of the desired row of the first column with an ink having a color different from the color of the printing plate, and the required code is not marked in the identification area of the first column. , The second column without this sign In another area, an ink jet printer that prints and displays an ink having a color different from the color of the printing plate, and (D) a cylinder position identification code of a required code printed and displayed on the surface of the printing plate by the ink jet printer. A color image pickup unit for collation which mounts an appropriate number of the printing plates on the plate cylinder based on the above, and images an actual cylinder position identification code printed and displayed on the surface of the printing plate mounted on the plate cylinder, E) .The actual body position identification code imaged by the color image capturing means for comparison is compared with the set body position identification code stored in advance in the body position identification code / memory provided in the host controller. And a comparing / collating means provided in the higher-level control device.

Therefore, the plate mounting / confirming method according to the third and fourth aspects is carried out by the plate mounting / confirming device according to the fifth aspect.
Since the actual cylinder position identification code and the preset cylinder position identification code are automatically compared and collated by the comparing / collating means, almost erroneous detection can be performed, and the printing press can be operated with peace of mind.

When the printing press is operated, the ink of the cylinder position identification code printed on the surface of each printing plate is erased in a short time, so that printing is not affected.

According to a sixth aspect of the present invention, there is provided a plate mounting and checking device according to the fifth aspect.
(F) a start position reading sensor for reading a start position of a printing plate mounted on the plate cylinder of the printing press; and (G) the color imaging operation based on the start position read by the start position reading sensor. And a shutter provided in the means.

Therefore, when the cylinder position identification code printed and displayed on the surface of an appropriate number of printing plates mounted on the plate cylinder is imaged by the collation color imaging means, when the plate cylinder is rotated,
The start position of the printing plate is read by the start position reading sensor. The shutter of the color image pickup means for collation is actuated by the read signal, so that the cylinder position identification code printed on the surface of an appropriate number of printing plates is immediately, easily, reliably and accurately imaged in a short time.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a plate cylinder 1 of a rotary press in a printing press is extended in the left-right direction, and a plurality of partitioned areas are formed in the longitudinal direction of the plate cylinder 1. For example, a plurality of printing plates 3A, 3B, 3C, 3D are mounted in each of the divided areas by an operator (operator).

An operator mounts the printing plates 3A, 3B, 3C, 3D on a plurality of partitioned areas of the plate cylinder 1, and a mounting / confirming device 5 for the printing plates 3A, 3B, 3C, 3D for confirming the mounting. Are located. This mounting / confirmation device 5
Is provided with a body position identification code / memory 7 and a comparing / collating means 9 for preliminarily storing body position identification codes corresponding to the printing plates 3A, 3B, 3C, 3D by input means, An ink jet printer 13 for printing and displaying a cylinder position identification code at a desired position on the front surface 3S of the plates 3A, 3B, 3C, 3D; a control device 15 for the ink jet printer for operating the ink jet printer 13; Printing plates 3A, 3B attached to the plate cylinder 1,
The image processing apparatus includes a color television set 17 as a color imaging means for collation for imaging 3C and 3D body position identification codes, and an image processing device 19.

On the left side of the plate cylinder 1 in FIG. 1, a start mark 21 for determining a start position is provided. A start position reading sensor 23 for detecting the start mark 21 is provided near the plate cylinder 1. The start position reading sensor 23 is connected to a shutter 25 provided in the color television 17.

The surface 3 of the printing plates 3A, 3B, 3C, 3D
The desired area of S, for example, as shown in FIGS. 2 (A) to 2 (D), the identification area 27 composed of two columns and a plurality of rows (four rows in the present embodiment) of the body position identification code on the lower side. Is partitioned. In each identification area 27, for example, a binary "0" bit is printed and displayed in the first column and a binary "1" bit is displayed in the second column as a trunk position identification code. Further, since the colors of the printing plates 3A, 3B, 3C, 3D are generally blue, for example, red different from the blue is printed and displayed in the first column, and yellow is printed in the second column.

For example, the printing plate 3 is stored in the cylinder position identification code / memory 7.
As the trunk position identification code corresponding to A, 3B, 3C, 3D, for example, in a binary system, 1100, 1101, 1110, 10
11 is stored, the trunk position identification code
When a signal is sent from the memory 7 to the ink jet printer 13 via the ink jet printer control device 15, the ink jet printer 13 operates, and FIG.
As shown in (A), the first and second lines in the second column of the identification area 27 of the front surface 3S of the printing plate 3A are printed and displayed in yellow, and the first and third columns are printed and displayed in red. . FIG.
As shown in (B), the identification area 27 on the front surface 3S of the printing plate 3B is printed in yellow on the first, second, and fourth rows of the second column, and is printed and displayed in red on the third row of the first column. . FIG.
As shown in (C), the first, second, and third rows of the second column of the identification area 27 on the front surface 3S of the printing plate 3C are printed and displayed in yellow, and the fourth column of the first column is printed in red. . Similarly, as shown in FIG. 2D, the first, third, and fourth rows of the second column of the identification area 27 of the front surface 3S of the printing plate 3D are printed and displayed in yellow, and the first column, two rows are printed in red. Is displayed.

It is desirable to print and display in different colors as the color of the body position identification code in the first and second columns.
The same color may be used in the second and third rows as long as they are different from the blue color of the printing plates 3A to 3D. Moreover, this ink must be an ink that does not affect printing in the printing process, that is, an ink that is not printed, and the ink is hydrophilic,
It should be decomposed by water, light and heat. Further, it is preferable that the ink is dissolved in the fountain solution in the printing process and is not printed. The composition of the dampening solution is 99.5% water and 0.5% nonionic surfactant.

In FIG. 1, printing plates 3B, 3B,
When the printing plates 3B and 3D are shifted from each other, the printing plates 3B and
3C and 3D start marks can be provided to correspond to each other. In addition, a start mark and an end mark are printed and displayed on the left and right sides of the identification areas 27 of the printing plates 3A to 3D in FIGS.

As described above, by printing and displaying the colored body position identification codes in the first and second columns at desired positions, for example, the lower side of the surface 3S of the printing plates 3A to 3D, as compared with the related art. It is easy, reliable, and accurate. Also, the colors can be clearly identified later without blurring.

By the ink jet printer 13,
As shown in FIGS. 2A to 2D, printing plates 3A, 3B, 3
After the cylinder position identification code is printed and displayed on C and 3D, as shown in FIG. 1, the operator prints plates 3A, 3B and 3 on plate cylinder 1.
Attach C and 3D respectively. At this time, the operator simply mounts the printing plates 3A, 3B, 3C, 3D on the plate cylinder 1 by looking at the cylinder position identification code consisting of red and yellow printed and displayed in two columns and four lines. Since it is easier to see and distinguish than a barcode, erroneous mounting can be eliminated, and operation at the time of mounting becomes easier and mounting can be performed in a shorter time than before, thereby improving workability.

After the printing plates 3A, 3B, 3C and 3D on which the cylinder position identification code is printed are attached to the plate cylinder 1 and the start button of the printing press is pressed, the plate cylinder 1 is slowly rotated. At this time, when the start mark 21 is detected by the start position reading sensor 23, the shutter 21 of the color television camera 17 provided above the plate cylinder 1 operates,
Plates 3A, 3B, 3C, 3D with color TV camera 17
Are imaged.

The body position identification code picked up by the color television camera 17 is taken into the image processing device 19. In this image processing device 19, the three colors of blue on the surface of the printing plate and red and yellow of the body position identification code are distinguished, and the red and yellow colors are determined based on the number of vertical and horizontal pixels. , Let the yellow area be extracted. At this time, errors due to dirt and fading of colors are minimized.

The actual body position identification code image-processed by the image processing device 19 is taken into the comparing / collating means 9,
It is compared with a preset body position identification code that has already been fetched from the body position identification code / memory 7 and is collated. This collation result is immediately answered, displayed or warned.

Therefore, even if the operator mounts the rotary press incorrectly, the rotary press can be stopped without any trouble by detecting the incorrect mounting by the comparing / checking means 9, so that the rotary press can be operated with ease. In addition, instead of a bar code, a colored cylinder position identification code is applied to each of the printing plates 3A, 3B, 3
Since the images are printed and displayed on C and 3D, the image can be taken reliably.

By the time the rotary press is operated and good paper is produced, the drum position identification code printed and displayed by the dampening solution can be erased in a short time, and printing is not affected.

During operation of the rotary press, of the printing plates 3A, 3B, 3C and 3D mounted on the plate cylinder 1, for example, the second printing plate 3B from the left side of the plate cylinder 1 is removed and a new printing plate is removed. The cylinder position identification code is printed and displayed on the plate 3B in the manner described above,
When the operator mounts on the plate cylinder 1, the printing plates 3A, 3
The body position identification code of C and 3D is erased by the dampening solution.

Therefore, for the second and subsequent times, only the printing plate 3B which needs to be replaced is printed and displayed with only the cylinder position identification code, so that it is sufficient to check only the replacement and it can be performed in a short time. Since the cylinder position identification code is deleted from the other printing plates 3A, 3C, 3D, it can be determined that there is no cylinder position identification code (no exchange). Naturally, it is also possible to detect a case where the camera is erroneously attached to a place where there is no trunk position identification code. In addition, the newly printed and displayed trunk position identification code can be erased with the dampening solution in a short time at the same time when the operation is restarted.

In FIG. 1, the explanation has been given based on the cylinder position identification code provided in the host controller 11 and the cylinder position identification code stored in the memory 7.
For example, a bar code is pasted as a body position identification code in advance on a part of, for example, the upper right part of 3B, 3C, 3D, and a signal obtained by reading this bar code with a bar code reader is
The data may be transferred to the drum position identification code / memory 7 and the control device 15 for the ink jet printer.

Also, an appropriate number of printing plates 3 mounted on the plate cylinder 1 are provided.
The color television 17 of the color imaging means for collation is used to compare the body position identification code printed and displayed on the surface 3S of A, 3B, 3C, 3D.
When the plate cylinder 1 is rotated, the printing plate 3
The start marks 21 at the start positions of A, 3B, 3C, and 3D are read by the start position reading sensor 23. The shutter 25 of the color television 21 is actuated by the read signal and immediately the appropriate number of printing plates 3A, 3B, 3
The body position identification code printed on the surface 3S of C and 3D can be easily, reliably, and accurately imaged in a short time.

The present invention is not limited to the above-described embodiments of the present invention, but can be embodied in other forms by making appropriate changes. In the example of FIG. 1 described above, when transferring the trunk position identification code captured by the color television set 17 as the color image capturing means for comparison to the comparing / collating means 9 provided in the host control device 11 via the image processing device 19. Alternatively, the transfer may be performed using a communication unit.

[0045]

As will be understood from the above embodiments of the present invention, according to the first aspect of the present invention, of the identification area composed of two columns and a plurality of rows partitioned at a desired position of the printing plate, In the identification area of the desired row in the first column, necessary symbols are marked with ink having a color different from the color of the printing plate. In addition, when the required code is not marked in the identification area of the first row, the identification area of the second row without the code is made of a color different from the color of the printing plate. By assigning the necessary codes with ink, it is possible to reliably and clearly print and display the desired position on the printing plate without blurring the cylinder position identification code.

According to the second aspect of the present invention, the necessary codes for the identification areas in the first and second columns are marked with different colors of ink, so that when the necessary codes are imaged later, the codes are used. It is possible to easily, reliably, and accurately capture an image without confusing the location with dirt or fading.

According to the third aspect of the present invention, the printing plate selected from the body position identification code including the mounting position information is transported to a position corresponding to the ink jet printer. At this position, the identification area of the first row of the identification area composed of two columns and a plurality of rows partitioned at a desired position on the surface of the printing plate by the ink jet printer from the color different from the color of the printing plate. The necessary code is printed and displayed with the new ink. When the necessary code is not marked in the identification area of the first row, the color of the printing plate is added to the identification area of the second row without the code by the ink jet printer. The necessary codes are printed and displayed with inks of different colors.
On the basis of the cylinder position identification code printed and displayed, for example, a printing plate is mounted at a desired position of the plate cylinder designated by the operator.

When an appropriate number of printing plates are mounted on the plate cylinder in the manner described above, the actual necessary code of each printing plate, which is the cylinder position identification code of the actual printing plate mounted on the plate cylinder, is color. Images are taken simultaneously by the imaging means. The actual torso position identification code, which is a necessary code imaged by the color imaging means, is compared with a preset torso position identification code which is previously input and stored.

Thus, even if the operator mistakenly mounts each printing plate on the plate cylinder, the actual cylinder position identification code is compared with a preset cylinder position identification code, so that this is checked. Since the erroneous mounting is automatically detected at the time, the printing press can be operated with ease. Moreover, the ink of the cylinder position identification code printed and displayed on the surface of each printing plate is erased by, for example, dampening solution, and does not affect printing.

According to the fourth aspect of the present invention, a printing plate is mounted at a desired position on the plate cylinder, and a suitable number of printing plates are mounted on the plate cylinder. Since the ink of the cylinder position identification code printed and displayed in (1) is erased in a short time with, for example, dampening solution, the operation is performed without affecting printing. Then, when a desired printing plate among the printing plates mounted during the operation is removed and a new printing plate is mounted in the steps (A) to (D), the actual cylinder of the new printing plate is mounted. At least the position identification code is compared with a preset trunk position identification code.

Thus, the cylinder position identification code of the replaced printing plate can be compared and collated in a short time, and the ink can be erased in a short time. In addition, it is possible to detect a case where the body is erroneously attached to a place where the other body position identification code is deleted.

According to the fifth aspect of the present invention, the plate mounting / confirming method according to the second or third aspect is performed by the plate mounting / confirming apparatus according to the fourth aspect. However, since the actual cylinder position identification code and the preset cylinder position identification code are automatically compared and collated by the comparison / collation means, almost erroneous detection can be performed, and the printing press can be operated with peace of mind. .

When the printing press is operated, the ink of the cylinder position identification code printed on the surface of each printing plate is erased in a short time, so that printing is not affected.

According to the sixth aspect of the present invention, when the cylinder position identification code printed and displayed on the surface of an appropriate number of printing plates mounted on the plate cylinder is picked up by the color image pickup means, the plate cylinder is rotated. Then, the start position of the printing plate is read by the start position reading sensor. The read signal activates the shutter of the color image pickup means, so that the cylinder position identification code printed on the surface of an appropriate number of printing plates can be picked up easily, reliably and accurately in a short time.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a plate mounting and checking device according to an embodiment of the present invention.

FIGS. 2A to 2D are explanatory diagrams showing examples of printing and displaying a cylinder position identification code on a printing plate;

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 plate cylinder 3A to 3D printing plate 5 plate mounting / confirming device 7 cylinder position identification code / memory 9 comparing / collating means 11 host control device 13 ink jet printer 15 ink jet printer control device 17 color television camera (for collation Color imaging means) 19 Image processing device 21 Start mark 23 Start position reading sensor 25 Shutter

Claims (6)

[Claims] 1. An identification area consisting of two columns and a plurality of rows is defined at a desired position of a printing plate, and a required code is marked with an ink having a color different from the color of the printing plate in an identification area of a desired row in the first column. In addition, when the required code is not marked on the identification area of the first column row, the identification area of the second column row without this code is made of a color different from the color of the printing plate. A plate identification providing method, wherein a necessary code is attached with ink. 2. The color of a code required for the identification area of the first and second columns is different.
The printing plate identification and assignment method described above. 3. A method of mounting and confirming a printing plate for mounting and confirming an appropriate number of printing plates on a plate cylinder of a printing press, comprising: (A) printing a plate selected from a cylinder position identification code including mounting cylinder position information; (B) a transporting step of transporting the plate to a position corresponding to the ink jet printer; (B) an identifying area defined at a desired position on the surface of the printing plate transported to a position corresponding to the ink jet printer in the transporting step; In the identification area of the desired row in the first column, a necessary code is printed and displayed by an ink jet printer with ink having a color different from the color of the printing plate, and the code required in the identification area of the first column is printed. If not,
A print display step of printing and displaying a required code by an ink jet printer with an ink having a color different from the color of the printing plate on the identification area of the second column row without the code; (C). A mounting step of mounting a printing plate, on which a required code is printed and displayed on a front surface, in a predetermined position of the plate cylinder, (D). Repeating the above steps (A) to (C), and After the printing plate has been mounted on the plate cylinder, an imaging step of capturing the actual required code of each printing plate mounted on the plate cylinder with a color imaging means for comparison, (E). A printing / printing process, comprising: comparing and collating an actual trunk position identification code consisting of necessary codes with a preset trunk position identification code input and stored in advance. How to attach and confirm. (F). When the printing press is operated, the printing plate at a desired position on the plate cylinder is removed and replaced with a new printing plate. ), After being mounted at a desired position on the plate cylinder, at least a comparison is made between the actual cylinder position identification code of the mounted new printing plate and the preset cylinder position identification code that is input and stored. 4. The method of mounting and confirming a printing plate according to claim 3, further comprising a step of performing collation. 5. A printing plate mounting / checking device for mounting and checking an appropriate number of printing plates on a plate cylinder of a printing press, comprising: (A) setting a set cylinder position identification code including a mounting cylinder position in each printing plate; (B) a higher-level control device having a cylinder position identification code and a memory that is input and stored in advance, and (B) for an ink jet printer controlled based on the cylinder position identification code from the cylinder position identification code and the memory. A control device; and (C) the printing plate in the desired area of the first row of the identification area defined at the desired position on the surface of the printing plate designated by the control of the control device for the ink jet printer. A necessary code is printed and displayed with ink of a color different from the color, and if the required code is not marked in the identification area of the first row, the identification area of the second column without the code is marked. In addition, an ink made of a color different from the color of the printing plate (D) an ink jet printer that prints and displays the printing plate on the plate cylinder based on a required cylinder position identification code printed on the surface of the printing plate by the ink jet printer. (E) a collation color imaging unit that is mounted and images the actual cylinder position identification code printed and displayed on the surface of the printing plate mounted on the plate cylinder; And a comparing / collating means provided in the upper-level control device for comparing and collating the torso position identification code of the upper-level control device with a set torso position identification code stored in the memory provided in the upper-level control device in advance. A printing plate mounting / checking device characterized by being provided. 6. A start position reading sensor for reading a start position of a printing plate mounted on the plate cylinder of the printing press; and (G) a start position read by the start position reading sensor. The plate mounting / confirming device according to claim 5, further comprising: a shutter provided on the color imaging unit to be operated.