High contrast photographic element and emulsion and process for

Details High contrast photographic element and emulsion and process for High contrast photographic element and emulsion and process for

1988-03-14

1992-04-14

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430598, G03C 134

Patent

active

051047691

ABSTRACT:
Photographic elements and emulsions are described which are capable of providing high contrast images. The elements and emulsions comprise negative working silver halide and contrast enhancing arylhydrazide nucleating agents. A process for utilization of the elements and emulsions is also described.

REFERENCES:
patent: 4323643 (1982-04-01), Mifune et al.
patent: 4332878 (1982-05-01), Akimura et al.
patent: 4975354 (1990-12-01), Machonkin et al.

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