JPH025058A - Printing system - Google Patents

Abstract

PURPOSE:To manufacture a negative lithographic film by a simple method by providing a thermal transfer light shield layer to a transparent base sheet, and transferring the light shield layer to a peel sheet with the heat of a thermal head and separating the layer. CONSTITUTION:This is a new printing system which manufactures the negative lithographic film by a thermal printer and easily obtain a printing plate from the lithographic film. Namely, the negative lithographic film provides the thermal transfer light shield layer on the transparent base sheet and the layer is transferred to the peel sheet with the heat of the thermal head and separated to form a transparent image. Consequently, the negative lithographic film is easily manufactured by the thermal transfer printer, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] In the present invention, a negative lith film is prepared using a thermal printer, and then the lith film 11 or j) is slightly opened.

[Prior Art] Conventionally, when printing; according to one draft, a phototypesetter made a positive block copy on photographic paper, and then made a negative lithographic film to create Ihj W of various types of printing. It takes time and effort to wake up negative lithographic film,
It was even more troublesome work to fix.

[1-1 objective] The present invention produces a negative lithium film with a simple plane θ;
This is a new printing system that creates printing plates.

[Construction] In order to achieve the above-mentioned objective 1, the present invention is capable of inverting a negative film to a positive film or directly converting the negative film into a positive film.
In off-seno I-printing systems in which the image is taken onto the plate, or in letterpress printing systems in which a negative film is exposed directly to a light-sensitive f1 resin plate, or in screen printing systems in which a negative film is exposed directly to a light-sensitive screen plate, a negative film is exposed directly to a light-sensitive screen plate. A negative film in which a transparent base sheet 1- is provided with a heat-transferable light-shielding layer R11, and a transparent image is produced by transferring and peeling the light-shielding layer onto a release sheet 1- using heat from a thermal heater 1-. The present invention relates to a printing system characterized by the use of film.

Ru.

[Example] Hereinafter, Example 1 will be described based on an example of the present invention.
Cant the size and make it lith fill l\. A negative lithographic film is prepared by partially peeling off the light-shielding layer from the surface of the light-shielding layer using a thermal head, particularly a peeling sheet 1 using a word processor thermal transfer printer. Furthermore, this lith film 11 allows the positive lith film to be warped using the silver halide photography method! Then raise the positive lithium film. A printing plate is prepared by proof-stopping with Posilis film and printing on a positive type Offseno L-PS plate. The work was completed in nine minutes, especially since I was able to perform the repair 11: [-1] at the repair workbench. Also, when printing directly from a negative film onto a negative type Offseno l-11S plate, the result is 111. was able to complete the work in a short time.

Example 2 A convex printing plate was prepared by directly applying light from the negative film 1' produced in Example 1 onto a photosensitive resin bottle. Negative film has sufficient contrast, so it becomes a letterpress with clear edges, and even unusual printing is possible!・It was 1, also, 〃; (Revisions to the manuscript are in the example] Same as simple 1) 1
It will be finished in a short time.

[Effects] As explained above, the printing system of the present invention prints negative film to M and Q+ using a thermal transfer printer, etc., and also performs corrections such as 111 using a word processor, thereby making it possible to print on conventional positive photographic paper. The present invention provides a printing system that can omit the preparation and repair of plate 1, and can easily perform printing on offset plate 1, letterpress printing, and screen printing.

Claims (1)

[Claims] (1) Reversal from negative lithium film to posilithic film,
Or, in an offset printing system in which an image is directly captured onto a PS plate, in a letterpress printing system in which a negative film is directly exposed to a photosensitive resin plate, or in a screen printing system in which a negative film is directly exposed to a photosensitive screen plate, the negative film is A printing system characterized in that a transparent base sheet is provided with a thermally transferable light-shielding layer, and a transparent image is produced by transferring and peeling the light-shielding layer onto a release sheet using heat from a thermal head, using a negative lithium film. .