JPS5884769A - Production of matrix for printing plate - Google Patents

Abstract

PURPOSE:To produce a matrix for a printing plate inexpensively and easily without requiring experienced skill or labor, by a method wherein films provided with opaque rules are laminated with each other, and a liquid photo-sensitive resin is washed away by water while retarding the solidification of the liquid resin to produce grooves. CONSTITUTION:A printing film 1 is prepared from a printing paper printed thereon by a phototypesetter, and a rule film 5 wherein parts other than the rules 5' are transparent is prepared. Thereafter, the film 1 is placed on a transparent plate (a) in a double-side exposer A, a transparent cover film 2 is placed on the film 1, a liquid photo-sensitive resin 3 is cast on the cover film 2 in the form of a layer, a transparent base film 4 is placed on the resin 3, the film 5 is placed on the base film 4 so that the rules 5' are located between printing rows, and exposure to light is conducted on both sides of the laminate. The resin 3 is solidified at the parts where light is transmitted, and after exposure to light is conducted for a predetermined period of time, the resin 3 at unexposed parts is washed away, whereby the matrix C for a printing plate having grooves 13 between characters can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a rotary type printing plate matrix such as a date stamp.

The matrix for printing plates is made by metal engraving, which requires skill and time. After making a film from photographic paper printed with a phototypesetting machine, a cover film is placed on the film, and then a liquid photosensitive film is placed on the cover film. Pour in layers of 111'e
A method of manufacturing the mother mold is adopted in which the exposed portion is solidified by exposure, and after a certain period of time, the unhardened resin is washed away by a stream of water.

In this case, since the character stand is continuous, when the manufactured printing plate is made into an endless band, there are no grooves between the characters, and the printing surface does not become flat.

For this reason, a metal engraving matrix was used, which required a high level of skill and labor and was expensive.

The object of the present invention is to eliminate the above-mentioned drawbacks by forming grooves between the character bases of a printing plate manufactured using the above-mentioned liquid photosensitive resin.

This invention involves overlaying a film having ruled lines that do not transmit light on top of the liquid photosensitive resin, and allowing the liquid photosensitive resin to flow away by washing with water while assimilating the multi-liquid photosensitive resin to the ruled lines. To provide a method for manufacturing a matrix for a first printing plate, in which a seal is provided on the other side.

Embodiments of the present invention will be described below with reference to all accompanying drawings.

First, film 1 is made from photographic paper printed with a phototypesetting machine.

In this film 1, only the printed characters 1' transmit light.

Next, after placing the film 1 on the transparent plate α of the double-sided exposure device N, a transparent cover film 2 is placed on the film 1.

At this time, the film 1 and the cover film 2 are vacuumed.

After that, a liquid photosensitive resin 3 is poured onto the base film 2 so as to form a layer with a predetermined thickness, and then a transparent base film 4 is poured onto the liquid photosensitive resin 3.
A ruled film 5 and a transparent plate 6 are sequentially stacked.

The ruled lines 5' of the ruled line film b are designed so that no light passes through them, and the ruled lines 5' are positioned between the upper and lower rows of the printed characters 1'.

Further, on the surface of the base film 4 that comes into contact with the liquid photosensitive resin 5, an adhesive (for example, a polymeric bond described in Japanese Patent Publication No. 3 Otsu-237 Otsu/No. 1983) is applied. A photopolymerizable composition is provided, which comprises a photopolymerizable agent, an ethylenically unsaturated polymer capable of forming a high polymer by photopromoted polymerization, and an additional polymerization promoter activated by actinic radiation.

When exposed by the lamps B arranged above and below in the exposure unit N, the area was irradiated with light (on the ruled line film 5, the area other than the ruled line 5', on the printing film 1, The liquid photosensitive resin 3 in the portion (printed 1' only) begins to gradually solidify.

At this time, unexposed areas that do not transmit light (areas other than the print 1' on the print film 1 and the ruled line 6' on the ruled line film 5)
The liquid photosensitive resin 3 (only) does not solidify.

Then, after a certain period of time, the exposure is stopped, the exposure device A is opened, the transparent plate 6 is removed, and the ruled line film 5, printing film 1, and cover film 2 are peeled off and washed with water to harden. After pouring off the liquid photosensitive resin, a matrix C as shown in FIG. 3 is obtained.

The above matrix C has a character stand 11, this character stand 110, and then characters 12 integrally formed by irradiating light onto one side of a base film 40, and a base film 4 between the character stand 11
Debris 13 is formed where r=.

In addition, as shown in FIG. 2, a spacer 7 is provided on the periphery of the upper surface of the transparent plate α, and a liquid photosensitive resin 3 is provided inside the spacer 7.
An edge can be formed at the periphery of the mother die C by placing the flow prevention member d and by overlapping the peripheral edge of the cover film 2 on the upper surface of the flow prevention member 8.

As described above, according to the method for manufacturing a printing plate matrix according to the present invention, a three-stage character stand is formed by solidifying a liquid photosensitive resin by irradiating light on one side of a base film, and from this character stand. Since a groove is formed between the protruding characters and the above-mentioned character stand, with the base film serving as the bottom, the mother mold can be produced more cheaply and easily than the conventional mother mold for metal engraving, which requires skill and labor. Can be done.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 7 is a perspective view of each film, a cross-sectional view is an enlarged front view of the longitudinal section during manufacture, and FIG.
The figure is a partially cutaway oblique view of the matrix obtained in the same manner. A: exposure device, α: transparent plate, B: lamp, C: matrix,
1・Film, 1′・Printing, 2・Base film, 3
...liquid photosensitive resin, 4. base film, 5...
Ruled film, 5... Ruled line, 6... Transparent plate, 7...
Spacer, 8... Stopper member, 11 - Character stand, 1
2...letter, 13...groove Patent applicant: Hashino Sangyo Co., Ltd. Agent: sickle 1) Letter 2

Claims (1)

[Claims] Print film with photographic paper marked with 1:1 on a phototypesetting machine,
In addition, after making each lined film that is transparent except for the lined line, print the printed film on the transparent plate of the double-sided D light device.
Transparent cover films are layered one after another, and then a liquid photosensitive resin is poured in a layer on top of the cover film so that the transparent base film is placed on top of the liquid photosensitive resin and the lines are positioned between the printed rows. After layering the ruled film one after another,
A printing plate matrix characterized by solidifying the liquid photosensitive resin in the areas through which light has passed through double-sided exposure, and then, after a certain period of exposure, washing away the liquid photosensitive resin that has not hardened due to non-exposure. Production method.