Process for preparing printing plates

Photocopying – Projection printing and copying cameras – Methods

Patent

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Details

355 32, 355 85, G03B 2732

Patent

active

046260978

ABSTRACT:
A process comprising the steps of preparing from a positive original transparent film pieces bearing the image of the original in a positive form for color separation, fixedly laying out each of the film pieces on a transparent film for each of the separated colors, and making a printing plate for each color with use of the transparent film having the film piece thereon.

REFERENCES:
patent: 874222 (1907-12-01), Mertens
patent: 1916282 (1933-07-01), Peacock
patent: 2420636 (1947-05-01), Yule

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