Photographic silver halide materials containing aryl hydrazides

Details Photographic silver halide materials containing aryl hydrazides Photographic silver halide materials containing aryl hydrazides

1991-02-20

1993-03-02

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430598, G03C 106

Patent

active

051908476

ABSTRACT:
Photographic silver halide materials containing aryl hydrazides as defined and novel aryl hydrazides with a cationic group in the acyl radical enables the preparation of photographic materials that can be developed rapidly to ultrahigh contrast at a relatively low pH value. The photographic materials are useful in reprography, particularly screening for halftone images.

REFERENCES:
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patent: 4224401 (1980-09-01), Takada et al.
patent: 4937160 (1990-06-01), Ruger
patent: 5013844 (1991-05-01), Ruger
patent: 5028510 (1991-07-01), Okamura et al.
patent: 5061594 (1991-10-01), Okamura et al.
patent: 5130480 (1992-07-01), Ruger
Research Disclosure 23510, Anonymous, Nov. 1983.
Katritsky, Alan R., et al., Chemical Abstracts, vol. 99:158195W.

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