JP3058469B2 - Plate manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate manufacturing apparatus used in offset printing and the like.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional printing plate manufacturing process involves (1) preparing a sheet-shaped original plate 1, (2) fixing the original plate 1 on a printing stand, and (3) using a printing device 2. The image of the original film 3 is printed on the original 1, (4) the original 1 is developed and fixed by the developing device 4 to form a printing plate, and (5) the printing plate is stocked in the stock device 6.

[0003]

However, the prior art has the following problems.

[0004] A large space is required as an original storage space.

That is, since the types (especially dimensional types) of stencils required for the production of a printing plate exceed 100 types, a wide stencil such as a storage shelf must be prepared in order to prepare all types of stencils. Requires storage space.

[0006] It takes time to transport the master.

That is, it is necessary to transport the original from the original storage to the printing apparatus.

It takes time to set the master at the printing position.

The positioning member for positioning the original on the printing stand needs to be changed in accordance with a change in the dimensions of the original, which requires time.

In the case of multicolor printing, printing plates are produced in a number corresponding to the number of colors (a plurality of printing plates form one set). At this time, when a sheet-shaped original plate that has been cut in advance is supplied to a printing apparatus, the amount of positional deviation and the direction of deviation of the original plate from the printing position differ for each plate in one set. Is performed, printing is performed in a state where the color is misaligned.

[0011] The present invention, upon producing a printing plate, without requiring large space as an original Area, without even taken time to transport the original, and to allow the set to facilitate the image forming position an original, multi in the color printing is possible produce a set of printing plates without causing a color shift, further appropriately each plate
It is intended to be able to cut out .

[0012]

According to the present invention, there is provided a plate manufacturing apparatus for forming an image on an original plate to form a plate.
And a roll-shaped original supply device and an image on the rolled original
An image forming processing apparatus to be formed, and an image-formed row
And a dividing device for dividing the original plate into unit printing plates.
The cutting device is capable of running across the width of the roll
Cut the roll-shaped master in the width direction
Row cutter is set at an appropriate position in the width direction of the plate.
This allows the original to be cut in the longitudinal direction .

According to a second aspect of the present invention, there is provided a printing plate manufacturing apparatus for forming an image on an original plate to form a printing plate, comprising: a roll-shaped original plate supplying device; and an image forming processing device for forming an image on the rolled original plate. , and a cutting device for cutting the rolled precursor is image forming process for each unit plate, the image forming apparatus
Uses a laser to write image data to the original using a laser.
Stencil making machine, and the cutting device uses a laser cutter.
Of the image formed on the roll original by the direct plate making machine
The roll-shaped original plate can be cut based on the data of the position .

The present invention according to claim 3 provides the present invention as defined in claim 1 or
In the present invention described in 2, the dividing device further comprises:
The remaining rolled original plate that has been cut is wound up in a cutting device .

[0015]

According to the present invention, by preparing a roll-shaped original plate, the roll-shaped original plate is sequentially sent to an image forming position in the image forming apparatus, set, and an image forming process is performed at an appropriate position. be able to. Then, a required printing plate can be obtained by cutting out each unit printing plate from the roll-shaped original plate subjected to the image forming process.

[0016]

FIG. 1 is a schematic view showing a first embodiment of the present invention, FIG. 2 is a schematic view showing a roll-shaped original plate subjected to image forming processing, FIG. 3 is a schematic view showing a second embodiment of the present invention, FIG. 4 is a schematic diagram showing a roll-shaped original plate subjected to image formation processing, FIG. 5 is a schematic diagram showing an example of a cutting device, and FIG. 6 is a schematic view showing a roll-shaped original plate subjected to image formation processing.

(First Embodiment) (See FIGS. 1, 2 and 5) A printing plate manufacturing apparatus 11 includes a roll-shaped original supply apparatus 12, a printing apparatus 13 and a developing apparatus 1 constituting an image forming processing apparatus.
4, a cutting device 15 and a stock device 16, and an image is formed on the roll-shaped original plate 10 to obtain a printing plate 10A.

The roll-shaped original supply device 12 is provided with an original support 17 for supporting the roll-shaped original 10, and is provided with a feeding motor 18 capable of sequentially feeding the originals 10. The roll-form original supply device 12 intermittently feeds the roll-form original 10 in accordance with an image area in cooperation with a feed roller (not shown) of the developing device 14, and moves the image forming area of the original form 10 to a printing position. Stop the positioning.

The printing device 13 prints the image of the original film 19 on the roll-shaped master 10 positioned and stopped at the printing position. However, the original surface of the roll original 10 that should not be subjected to the baking treatment is shielded from light.

The developing device 14 develops and fixes the roll-shaped original plate 10 to form an image-formed printing plate 10A.

The dividing device 15 divides the rolled original plate 10 subjected to the image forming process into unit printing plates 10A. The separating device 15 cuts the roll-shaped original plate 10 in the width direction by a transverse cutting cutter 15A that can travel in the width direction of the roll-shaped original plate 10, and the longitudinal direction of the roll-shaped original plate 10 by a pair of left and right vertical cutting cutters 15B and 15B. Cut into pieces. Each vertical cutting cutter 15B
Is screwed into a left-hand thread portion and a right-hand thread portion of a screw shaft 21 driven by a motor 20, and is opposed to each other about a center line of the roll-shaped master 10. It is set at an appropriate position. The rest of the roll-shaped original plate 10 from which the printing plate 10A has been divided is taken up in a dividing device 15.

The stock device 16 stocks the printing plate 10A divided by the dividing device 15.

Next, the operation of the plate manufacturing apparatus 11 will be described.

According to the plate manufacturing apparatus 11, by preparing the roll-shaped original plate 10 having a width dimension sufficient to cut out the printing plate 10A having the maximum width, the roll-shaped original plates 10 are sequentially placed in the printing device 13. The image can be sent to the printing position, set, and the image forming process can be performed at an appropriate position. Then, each unit plate 10A is transferred from the roll-shaped original plate 10 on which the image forming process is performed.
, The required printing plate 10A can be obtained.

Therefore, the plate manufacturing apparatus 11 has the following effects.

There is no need for a large space for the original plate.

Although a storage space for the roll-shaped original plate 10 is necessary, a single roll-shaped original plate 10 can handle various types of printing plates 10A, so that it is not necessary to prepare various types of original plates, and a wide original plate can be prepared. No storage space required.

It takes no time to transport the master.

The roll-shaped masters 10 are sequentially fed into the printing apparatus 13 from the front side of the printing apparatus 13, and it is not necessary to transport the roll-shaped master 10 from the original printing place to the printing apparatus 13.

The original plate can be easily set at the printing position.

Although it is necessary to set the roll-shaped original plate 10 at the printing position, it is not necessary to change the setting of the positioning member as in the related art even when the size of the printing plate 10A to be obtained is changed. High-precision positioning can also be automatically realized according to the stopping accuracy after intermittent feeding of the roll-shaped master 10.

In the production of a printing plate for multicolor printing, even if the roll-shaped master 10 is positioned and stopped with a slight shift from the reference printing position, the amount of shift in the printing plate 10A in one set,
The shift directions are all the same, and no color shift occurs in the printed product.

(Second Embodiment) (See FIGS. 3, 4, and 6) The plate manufacturing apparatus 31 includes a roll-shaped original plate supply apparatus 12, a cutting apparatus 15, and a stock apparatus similar to those in the plate manufacturing apparatus 11. 16 as well as a direct plate making machine 32 as an image forming processing device in place of the printing device 13 and the developing device 14 in the plate manufacturing device 11, and forming an image on the roll-shaped original plate 10 to obtain a printing plate 10A. .

The direct plate making machine 32 writes image data stored in a floppy disk or the like on the roll original plate 10 by using a gas laser, a semiconductor laser, or the like, performs toner development and fixing, and performs image forming plate processing. 10
A can be manufactured. The direct plate making machine itself is, for example, a product name of “SYNARDICA direct plate making system” or a product name of “Laser AZ-94K” of Dainippon Ink and Chemicals, or a product name of “CP-800 S” of Mitsubishi Paper Mills. And product name "CP-Multi 1100
V "is already known.

When using the direct plate making machine 32,
The layout of the printing plate 10A in the roll-shaped master 10 is not arranged in series on the center line of the roll-shaped master 10 as shown in FIG.
As shown in FIG.

By using the direct plate making machine 32, if the layout of the printing plate 10A in the rolled original plate 10 is random as shown in FIG.
As 5, it is preferable to use a laser cutter.
That is, the cutting device 15 having the laser cutter receives the data such as the position and the size of the image formed on the roll-shaped original plate 10 by the direct plate making machine 32, and shakes the laser according to the data to form each printing plate. 10A can be appropriately cut out.

The plate manufacturing apparatus 31 has substantially the same functions and effects as those of the plate manufacturing apparatus 11 described above.

[0038]

As described above, according to the present invention, when manufacturing a printing plate, a large space is not required as a space for the original plate.
Without even taken time to transport the original, and to allow the set to facilitate the image forming position an original, in the multicolor printing can be manufactured a pair of plate without causing a color shift
In addition, each printing plate can be appropriately cut out .

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a roll-shaped original plate on which an image forming process has been performed.

FIG. 3 is a schematic view showing a second embodiment of the present invention.

FIG. 4 is a schematic view showing a roll-shaped original plate on which an image forming process has been performed.

FIG. 5 is a schematic diagram showing an example of a cutting device.

FIG. 6 is a schematic diagram showing a roll-shaped original plate on which an image forming process has been performed.

FIG. 7 is a schematic view showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 roll original plate 10A printing plate 11, 31 printing plate manufacturing device 12 roll original printing plate supply device 13 printing device 14 developing device 15 separating device 32 direct plate making machine

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41C 1 / 00,1 / 18 B65H 20/04 G03F 1/00-1/16

Claims (3)

(57) [Claims] 1. A printing plate forming an image on an original plate to form a printing plate
In the forming apparatus, a roll-shaped original supply device and an image forming apparatus for forming an image on the roll-shaped original
Image forming processing apparatus, and an image-formed roll-shaped original
A separating device that separates the plate into unit printing plates, wherein the separating device is capable of traveling in the width direction of the roll-shaped original plate.
Cut the roll original in the width direction with a cutter
Use a vertical cutter set at an appropriate position in the width direction of the
A printing plate manufacturing apparatus capable of cutting a roll-shaped original plate in a longitudinal direction . 2. A printing plate manufacturing apparatus for forming an image on an original plate to form a printing plate, comprising: a roll-shaped original supply device; an image forming processing device for forming an image on the rolled original plate; A separating device that cuts the original into unit printing plates, and the image forming processing apparatus uses the laser to convert the image data to the original.
A direct plate-making machine that writes to the machine, and the cutting device uses a laser cutter.
Based on the image position data formed on the rolled master
A plate manufacturing apparatus, characterized in that the plate-shaped original plate can be cut . 3. A roll shape cut by the cutting device.
3. The printing plate manufacturing apparatus according to claim 1, wherein the rest of the original plate is wound into a cutting device.