Photographic materials comprising azo sensitizing dyes

Details Photographic materials comprising azo sensitizing dyes Photographic materials comprising azo sensitizing dyes

1978-07-31

1979-11-06

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied after imaging

430591, 430617, G03C 102

Patent

active

041734785

ABSTRACT:
Certain azo compounds are useful as spectral sensitizing dyes in photographic silver halide materials, and particularly in photothermographic materials. These azo compounds comprise moieties capable of forming substantially insoluble silver salts thereby substantially improving sensitization of silver halides.

REFERENCES:
patent: 3666477 (1972-05-01), Goffe
patent: 3870523 (1975-03-01), Ikenoue et al.
patent: 3909271 (1975-09-01), Ikenoue et al.
patent: 4081278 (1978-03-01), Dedinas et al.

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