Process for forming super high contrast negative images

Details Process for forming super high contrast negative images Process for forming super high contrast negative images

1991-02-12

1992-08-18

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430438, 430464, 430487, 430566, G03C 526

Patent

active

051399210

ABSTRACT:
A process of forming super high contrast negative photographic materials in a developer having a pH of from 9.6 to 11.0 wherein the photographic material contains a hydrazine compound and a nucleation accelerator. The nucleation accelerator is represented by formula (Ia):

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