JPH1052906A - Machine plate mounting method and display device used for the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machine plate mounting method capable of being mounted more positively than in a conventional method, and an indication device employed in the method by avoiding nearly mounting errors upon mounting of a designated machine plate to a form cylinder by a worker prior to using of a detecting device for a machine plate mounting errors. SOLUTION: When the appropriate numbers of machine plates 3 are mounted on the form cylinder 1 of a printing machine, each form cylinder mounting position information (3P-A)-(3P-D) to the form cylinder 1 is print-indicated in advance to the machine plate 3 over the printing range 3S visually extensively with ink giving no affection to printing, e.g. being hydrophilic and decomposed by water, light, and heat, and the machine plate 3 is mounted at the predetermined place of the form cylinder 1 in terms of each form cylinder mounting information (3P-A)-(3P-D) indicated in this manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate mounting method for mounting an appropriate number of printing plates on a plate cylinder of a printing press, and a display device used in the method.

[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 having different page layouts are allocated to the newspaper distribution areas 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 mounts a large number of printing plates for each rotary press, there is a fear that the printing plates may be erroneously mounted.

Conventionally, in order to prevent such erroneous mounting of the printing plate, the operator relies on the attention of the operator at the time of mounting and the visual inspection of the operator immediately after the start of printing. Recently, due to the rationalization of personnel, the work volume of one worker has increased and the working density has been increased, and the number of newspaper pages and the printing speed have been increased, so that the paper inspection work has reached its limit. . 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 based on the judgment of the operator, the possibility of the erroneous mounting cannot be eliminated due to the misunderstanding of the operator. Also,
The paper inspection work itself is complicated, and the re-attachment of a printing plate that is found and erroneously mounted by the paper inspection work is more complicated. For this reason, it is strongly desired that erroneous mounting of a printing plate can be reliably detected without depending on the judgment of an operator and before starting printing.

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.

An object of the present invention is to substantially eliminate erroneous mounting when an operator mounts a specified printing plate on a plate cylinder before using a printing plate erroneous mounting detection device, and to mount the printing plate more securely than before. It is an object of the present invention to provide a printing plate mounting method and a display device used in the method.

[0008]

According to the first aspect of the present invention, there is provided a plate mounting method according to the first aspect of the present invention, wherein a suitable number of plates are mounted on a plate cylinder of a printing press. The mounting cylinder position information on the plate cylinder is visually pre-printed and displayed with ink that is visually large over the printing area and does not affect printing, and a printing plate is printed based on the displayed mounting cylinder position information. The plate cylinder is mounted on a predetermined position of the plate cylinder.

Therefore, when a suitable number of printing plates are mounted on the plate cylinder of a printing press, the mounting cylinder position information on the plate cylinder is previously determined using ink that does not affect printing over the printing area of the printing plate. Printed and displayed. This print display is displayed on a printing plate large enough to be visible to the operator.

The printing plate is mounted on a predetermined plate cylinder position by the operator based on the mounting cylinder position information displayed by printing. Thus,
Since the display of the mounting torso position information is displayed so as to be visually larger than in the past, there is almost no erroneous mounting, and the mounting is more securely performed than in the past.

According to a second aspect of the present invention, there is provided a display device for displaying, on a printing plate, positional information of a mounting cylinder on the plate cylinder before mounting an appropriate number of printing plates on the plate cylinder of a printing press. A host controller having a plate cylinder management information / memory storing the plate cylinder management information including the mounting cylinder position information; and a higher-level control device based on the mounting cylinder position information from the upper controller. Control device for an ink jet printer, and an ink jet for printing and displaying mounting cylinder position information with ink that does not affect printing over a printing area of a printing plate specified by control of the control device for the ink jet printer. And a printer.

Therefore, when the mounting cylinder position information is transmitted from the plate cylinder management information and the plate cylinder management information stored in the memory provided in the host controller to the ink jet printer controller, the ink jet printer controller is controlled. The ink jet printer is operated under the control, and the mounting cylinder position information is visually and largely printed on the surface of the printing plate to which the ink is applied without affecting printing.

Since the mounting cylinder position information printed and displayed on the printing plate can be easily seen by the operator, when mounting the printing plate on the plate cylinder, erroneous mounting is almost eliminated, and the mounting is more securely performed than in the past. Is done.

According to a third aspect of the present invention, there is provided a display device for displaying, on a printing plate, information on the position of a mounting cylinder mounted on the plate cylinder before mounting an appropriate number of printing plates on the plate cylinder of a printing press. A cylinder position identification symbol reading unit that reads a cylinder position identification symbol including mounting cylinder position information provided on a part of the printing plate;
A control device for the ink jet printer controlled based on the mounting cylinder position information read by the cylinder position identification code reading means, and a printing area of the printing plate designated by the control of the control device for the ink jet printer. And an ink jet printer for printing and displaying the mounting cylinder position information with ink that does not affect printing.

Therefore, the cylinder position identification symbol provided on a part of the printing plate is read by the cylinder position identification symbol reading means. When the mounted cylinder position information of the read cylinder position identification code is sent to the ink jet printer control device, the ink jet printer control device is controlled to operate the ink jet printer, and the printed plate is sent. The mounting cylinder position information is visually and largely printed on the surface of the printer with ink that does not affect printing.

Since the mounting cylinder position information printed and displayed on the printing plate can be easily seen by the operator, when mounting the printing plate on the plate cylinder, erroneous mounting is almost eliminated, and mounting is more securely performed than in the past. Is done.

According to a fourth aspect of the present invention, in the display device of the second and third aspects, the ink is a hydrophilic ink.

Therefore, since the ink is a hydrophilic ink, it is displayed on the printing plate so as not to affect the printing, and is removed at the time of printing so that the printing is not affected.

[0019]

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 extends 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 3 (3P-A, 3P-B,
3P-C, 3P-D) are mounted by the worker. In addition, if necessary, near the plate cylinder 1, for example, on the lower side in FIG.
An engraving plate 5 engraved with 3P-B, 3P-C, and 3P-D is provided, and when the operator mounts the printing plate 3 on the printing plate 1, it serves to assist the collation so as to make sure that the printing plate 3 is correct. To do.

In order for the operator to surely mount the printing plate 3 (3P-A to 3P-D) on the plurality of partitioned areas of the plate cylinder 1, the printing plate 3 is visually large over the printing area 3S. A display device 7 for printing and displaying the mounting cylinder position information 3P-A to 3P-D with ink that does not affect printing is provided.

The display device 7 operates the ink jet printer 9 for printing and displaying the mounting cylinder position information 3P-A to 3P-D in a print area on the front side of the printing plate 3. The control device 11 for the ink jet printer and the mounting cylinder position information 3P-A in advance
And a higher-level control device 15 having a plate cylinder management information / memory 13 in which plate cylinder management information including .about.3P-D is stored.

The ink for printing and displaying the mounting cylinder position information 3P-A to 3P-D from the ink jet printer 9 to the printing area on each printing plate 3 is an ink which does not affect printing in the printing process, ie, is not printed. It must be an ink. The ink is, for example, hydrophilic, water,
It is desirable to decompose by light and heat.

Specific examples of the ink are selected from those having the following compositions.

[0025]

Table 1 <Example 1> C.I. I. Acid Red 92 3 parts N-methyl-2-virolidone 3 parts Ethylene glycol 12.5 parts Purified water 81.1 parts Proxel GXL (Zeneca) 0.4 parts 100.0 parts <Example 2> Food color No. 106 (red) 3 parts Purified water 76.6 parts Glycerin 20.0 parts Proxel GXL (Zeneca) 0.4 parts 100.0 parts <Example 3> Direct Black 154 3 parts Glycerin 3 parts Triethylene glycol 6 parts Proxel GXL (Zeneca) 0. 3 parts Triethylene glycol monoethyl ether 2 parts Purified water 85.7 parts 100.0 parts The above ink is dissolved in the fountain solution in the printing process and is not printed. The composition of the dampening water is 99.5% water
And 0.5% of nonionic surfactant.

With the above arrangement, when the printing plate 3 is conveyed to be mounted on the designated plate cylinder 1 of the rotary press, the plate 3 is stored in the plate cylinder management information / memory 13 provided in the host controller 15. Mounting cylinder position information 3P in the plate cylinder management information
For example, 3P-A is selected from -A to 3P-D, and the signal is transferred to the control device 11 for the ink jet printer. The control device 11 for the ink jet printer receives the signal, activates the ink jet printer 9, and is visually large in the printing area which is the surface of the printing plate 3 conveyed. The image is printed and displayed by the printer 9 using the above-described ink.

The printing plate 3 on which the mounting cylinder position information 3PA is printed is displayed on the leftmost side of the plate cylinder 1 by an operator. When the operator mounts the printing plate 3 on the plate cylinder 1, the mounting cylinder position information 3 </ b> P-A is visually and largely printed over the printing area which is the surface of the printing plate 3. The user can mount the printer on the specified position of the specified plate cylinder 1 while carefully checking and checking the cylinder position information 3P-A.

Therefore, erroneous mounting is almost eliminated, and mounting can be performed more securely than in the past. Moreover, since the engraving plate 5 engraved with the mounting cylinder position information 3P-A to 3P-D is provided below the plate cylinder 1, this engraving plate 5 is provided.
If you attach while watching, you can further eliminate erroneous attachment.

When the required number of printing plates 3 are mounted on the plate cylinder 1 in the required number, the printing plates 3 are successively arranged in the manner described above.
Mounting body position information 3P-B, 3P- printed and displayed above
C, 3P-D can be attached to the designated position of the plate cylinder 1 while looking closely.

The operator can easily perform the mounting operation and can mount it in a short time than ever before, as well as eliminating the erroneous mounting, so that the workability can be improved.

Further, if necessary, for example, a CCD camera 17 as an image pickup device can be installed above the plate cylinder 1 to check whether the printing plate 3 has been mounted on the plate cylinder 1 without fail. .

Further, since the ink as the mounting cylinder position information printed and displayed on the printing plate 3 is decomposed by the dampening solution during the printing process, it hardly affects the printing.

FIG. 2 shows an example of another embodiment instead of FIG. In a part of the printing plate 3 conveyed in FIG.
9 is affixed. A bar code reader 21 as reading means for reading the bar code 19 is provided at an upper portion, and a signal read by the bar code reader 21 is transferred to the control device 11 for an ink jet printer.

With the above configuration, the barcode 19 attached to the printing plate 3 that has been transported is read by the barcode reader 21, and the signal is transferred to the control device 11 for the ink jet printer. The control device 11 for the ink jet printer operates the ink jet printer 9 based on the signal, and prints and displays the mounting cylinder position information 3P-A to 3P-D with ink over the printing area on the printing plate 3. Is done.

Therefore, the printing plate 3 by the subsequent worker
The method and the effect of mounting on the plate cylinder 1 are almost the same as those of the above-described embodiment, and therefore the description is omitted.

A bar code 19 to be attached to a part of the printing plate 3
Other characters and symbols may be used.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.

[0038]

As will be understood from the above embodiment, according to the first aspect of the present invention, when a suitable number of printing plates are mounted on the plate cylinder of a printing press, the number of printing plates is reduced. Information on the position of the mounting cylinder on the plate cylinder is printed and displayed in advance with ink that does not affect printing over the printing area. This print display can be displayed on a printing plate large enough to be visible to the operator.

The printing plate is mounted at a predetermined plate cylinder position by the operator according to the mounting cylinder position information displayed by printing. Thus,
Since the display of the mounting torso position information is displayed so as to be visually larger than in the conventional case, there is almost no erroneous mounting, and the mounting can be performed more securely than in the past.

According to the second aspect of the present invention, when the mounting cylinder position information is transmitted from the plate cylinder management information and the plate cylinder management information stored in the memory provided in the host control device to the ink jet printer control device, The control device for the ink jet printer is controlled and the ink jet printer is operated, and the printing cylinder position information can be visually displayed on the surface of the printing plate with ink that does not affect the printing, so that the mounting cylinder position information is visually large. it can.

Since the mounting cylinder position information printed and displayed on the printing plate can be easily seen by the operator, when mounting the printing plate on the plate cylinder, erroneous mounting is almost eliminated, and the mounting is more securely performed than before. I can do it.

According to the third aspect of the present invention, the cylinder position identification symbol provided on a part of the printing plate is read by the cylinder position identification symbol reading means. When the mounted cylinder position information of the read cylinder position identification code is sent to the ink jet printer control device, the ink jet printer control device is controlled to operate the ink jet printer, and the printed plate is sent. The mounting cylinder position information can be visually and largely printed on the surface of the printer with ink that does not affect printing.

Since the mounting cylinder position information printed and displayed on the printing plate can be easily seen by the operator, when mounting the printing plate on the plate cylinder, erroneous mounting is almost eliminated, and the mounting is more securely performed than before. I can do it.

According to the fourth aspect of the present invention, since the ink is a hydrophilic ink, it is displayed on the printing plate so as not to affect the printing. It won't.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an example of an embodiment embodying the present invention.

FIG. 2 is a conceptual diagram of another example of the display device of the present invention.

[Explanation of symbols]

 Reference Signs List 1 plate cylinder 3 printing plate 3P-A to 3P-D mounting cylinder position information 5 marking plate 7 display device 9 ink jet printer 11 control device for ink jet printer 13 plate cylinder management information / memory 15 host control device 17 CCD camera 19 bar Code 21 Barcode reader

Claims (4)

[Claims] When mounting an appropriate number of printing plates on a plate cylinder of a printing press, position information of a mounting cylinder mounted on the plate cylinder is visually large over a printing area on the printing plate, and printing is performed. A printing plate mounting method, wherein printing is performed in advance by using ink having no influence, and a printing plate is mounted at a predetermined position of the plate cylinder based on the displayed mounting cylinder position information. 2. A display device for displaying mounting cylinder position information on said plate cylinder on said plate before mounting an appropriate number of printing plates on the plate cylinder of a printing press, wherein said mounting cylinder position information is displayed. A higher-level control device having a plate cylinder management information / memory storing the plate cylinder management information including the same; a control device for an ink jet printer controlled based on mounting cylinder position information from the higher-level control device; An ink jet printer that prints and displays mounting cylinder position information with ink that does not affect printing over the printing area of the printing plate specified by the control of the ink jet printer control device. Display device. 3. A display device for displaying mounting cylinder position information on said plate cylinder on said plate before mounting an appropriate number of plates on a plate cylinder of a printing press, said display device comprising: Body position identification code reading means for reading a body position identification symbol including mounting body position information provided in the printer, and control for the ink jet printer controlled based on the mounting body position information read by the body position identification code reading means. An ink jet printer that prints and displays the mounting cylinder position information with ink that does not affect printing over the printing area of the printing plate specified by the control of the ink jet printer control device. A display device characterized by the above-mentioned. 4. The display device according to claim 2, wherein the ink is a hydrophilic ink.