Photothermographic element and process comprising an ammonia or

Details Photothermographic element and process comprising an ammonia or Photothermographic element and process comprising an ammonia or

1982-08-27

1984-02-07

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied after imaging

430554, 430617, 430619, 430620, 430543, 430936, G03C 102

Patent

active

044304200

ABSTRACT:
In a photothermographic silver halide material and process for preparing an enhanced silver image, an aminosulfonylhydrazone that is capable of developing an image in the photothermographic material and that is capable, upon oxidation, of releasing an aminosulfinic acid, which, in turn, thermally releases ammonia or amine provides a silver image in the photothermographic material and provides ammonia or amine for activation of an ammonia or amine responsive imaging material. After imagewise exposure of the photothermographic material, a silver image enhanced by an image in the ammonia or amine responsive imaging material is produced by heating the photothermographic material.

REFERENCES:
patent: 4273860 (1981-06-01), Adin
Research Disclosure, vol. 185, Sep. 1979, 18535, 18560.
Research Disclosure, vol. 194, Jun. 1980, 19415.
Research Disclosure, vol. 170, Jun. 1978, 17029.
Research Disclosure, vol. 176, Dec. 1978, 17643.

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