High contrast photographic silver halide material

Details High contrast photographic silver halide material High contrast photographic silver halide material

1996-01-04

1996-12-31

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430567, 430571, 430598, 430604, G03C 1035, G03C 108

Patent

active

055893180

ABSTRACT:
A high-contrast photographic material, adapted for use in the field of graphic arts, includes a hydrazide nucleating agent and comprises a silver halide emulsion layer containing silver halide grains which are spectrally sensitized with a non-desorbing sensitizing dye and silver halide grains which are not spectrally sensitized. Preferably, the photographic material also contains a booster compound which enables it to be processed in a developer having a pH of below 11.

REFERENCES:
patent: 3152907 (1964-10-01), Godowsky et al.
patent: 3989527 (1976-11-01), Locker
patent: 4276372 (1981-06-01), Wernicke et al.
patent: 4812390 (1989-03-01), Giannesi
patent: 5210002 (1993-05-01), Adin
Research Disclosure, Item 17643, Chapters VI and VII, pp. 24-25, Dec. 1978, Kenneth Mason Publications.
Research Disclosure, Item 18431, Aug. 1979, Kenneth Mason Publications.

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