Photographic products and processes

Details Photographic products and processes Photographic products and processes

1983-06-02

1984-08-28

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430241, 430375, 430542, 430559, G03C 140, G03C 700, G03C 554

Patent

active

044684487

ABSTRACT:
This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety comprising a 1,3-sulfur-nitrogen group that undergoes cleavage in the presence of silver ion and/or soluble silver complex, which moiety maintains said precursor in its colorless form at least until the 1,3-sulfur-nitrogen group undergoes cleavage imagewise to correspond to the imagewise distribution of silver ion and/or soluble silver complex made available as a function of development.

REFERENCES:
patent: 3443941 (1969-05-01), Rogers
patent: 3719489 (1973-03-01), Cieciuch et al.
patent: 4060417 (1977-11-01), Cieciuch et al.
patent: 4248962 (1981-02-01), Lau
patent: 4358525 (1982-11-01), Mooberry et al.

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