Method of forming high contrast negative images

Details Method of forming high contrast negative images Method of forming high contrast negative images

1987-12-07

1989-08-22

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

Process using lithographic infectious developer

430267, 430268, G03C 106, G03C 524

Patent

active

048595675

ABSTRACT:
A method of forming a high contrast negative image is disclosed, comprising developing an imagewise exposed substantially surface latent image-type silver halide photographic material in the presence of a hydrazine derivative with a developer, said developer having a pH of 10.5 to 12.3 and containing

REFERENCES:
patent: 4569904 (1986-02-01), Okutsu et al.
patent: 4619886 (1986-10-01), Okutsu et al.
patent: 4668605 (1987-05-01), Okutsu et al.
patent: 4740452 (1988-04-01), Okutsu et al.

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