Process for the production of color photographic copies

Details Process for the production of color photographic copies Process for the production of color photographic copies

1990-06-06

1992-08-04

Bowers, Jr, Charles L.

Radiation imagery chemistry: process, composition, or product th

Including exposure step or specified pre-exposure step...

430357, 430358, 430359, 430367, 430379, 430 30, G03C 746

Patent

active

051358417

ABSTRACT:
Colored copies of outstanding quality are obtained from half tone originals by means of a color paper of extremely hard gradation if the silver halide emulsions of the color paper consists substantially of silver chloride and if, before the material is processed, a filtered, homogeneous exposure is carried out, extending from sub-threshold pre-exposure to an exposure which reduces the maximum color densities by 0.4 density units.

REFERENCES:
patent: 4021831 (1977-05-01), Bercher
patent: 4440851 (1981-04-01), Tosaka et al.
patent: 4619889 (1986-10-01), Yuyama et al.
patent: 4904573 (1988-11-01), Hara

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