Direct positive type light sensitive silver halide photographic

Details Direct positive type light sensitive silver halide photographic Direct positive type light sensitive silver halide photographic

1981-09-09

1984-02-21

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430940, 430598, 430564, 430599, 430567, 430543, 430559, 430547, 430552, 430554, 430556, 430212, 430217, 430223, 430226, G03C 102

Patent

active

044330502

ABSTRACT:
A direct positive type light sensitive silver halide photographic material is disclosed. At least one layer containing an unfogged internal latent image type silver halide emulsion, is provided on a support, and an internal latent image type silver halide emulsion having fog centers in silver halide grains, is incorporated in said layer or in another constituent layer of the photographic material. A dye image forming substance may be incorporated in the same layer or in a separate layer to form a color diffusion transfer type light sensitive photograhic material. The photographic materials present a positive image having a high maximum density and a low minimum density.

REFERENCES:
patent: 3178282 (1965-04-01), Luckey et al.
patent: 3600180 (1971-08-01), Judd et al.
patent: 3772030 (1973-11-01), Gilman et al.
patent: 4035185 (1977-07-01), Evans et al.

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