Process for obtaining half-tone picture of irregular structure

Details Process for obtaining half-tone picture of irregular structure Process for obtaining half-tone picture of irregular structure

1977-11-28

1979-12-25

Kelley, Mary F.

Radiation imagery chemistry: process, composition, or product th

Plural exposure steps

430265, 430567, G03F 702, G03C 530, G03C 102

Patent

active

041804023

ABSTRACT:
A process for obtaining a half-tone picture of irregular structure consists in exposing a coarse-grained silver-halide material with an average linear size of silver halide micro-crystals of 4 to 6 microns, developing the exposed material in an infectious developer, printing the resulting picture on a high-contract photosensitive material, and developing the exposed high-contract photosensitive material. The process permits obtaining a high-quality half-tone picture with the optical densities of the original being reproducible within the range of more than 1.0. The process is simple and easily controllable.

REFERENCES:
patent: Re26601 (1969-06-01), Allen
patent: 2566265 (1951-08-01), Tuttle
patent: 3655381 (1972-04-01), Roemer
patent: 3737313 (1973-06-01), Rosecrants

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