Photographic element and process employed combination of surface

Details Photographic element and process employed combination of surface Photographic element and process employed combination of surface

1983-06-22

1984-07-10

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Developing

430202, 430502, 430506, 430509, 430564, 430566, 430596, 430955, 430957, 430223, G03C 554, G03C 146, G03C 538

Patent

active

044593511

ABSTRACT:
A redox release compound that is capable upon oxidation of releasing a silver ion complexing heterocyclic thio moiety enables reduction of the concentration of silver required in a photographic silver halide material comprising a combination of (i) photographic silver halide capable of forming a surface latent image, and (ii) a photographic silver halide capable of forming an internal latent image. The silver halide capable of forming an internal latent image preferably has lower photosensitivity than the silver halide capable of forming a surface latent image. The redox release compound preferably comprises a silver ion complexing 1,2,4-triazolium-3-thio moiety. An image is developed in such an exposed photographic silver halide element by means of a surface type silver halide developer.

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Research Disclosure, Dec. 1978, Item No. 17643.

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