Direct positive type silver halide photosensitive material

Details Direct positive type silver halide photosensitive material Direct positive type silver halide photosensitive material

1982-02-26

1983-07-26

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Positive

430567, 430596, 430597, 430412, 430936, G03C 524, G03C 136

Patent

active

043954839

ABSTRACT:
A high contrast, chemically fogged direct positive type silver halide photosensitive material is described containing at least one ammine complex salt selected from those including cobalt, nickel, ruthenium or chromium, by which the contrast in the lower optical density region is improved while retaining superior Dmax and sensitivity.

REFERENCES:
patent: 2717833 (1955-09-01), Wark
patent: 3501307 (1970-03-01), Illingsworth
patent: 3656961 (1972-04-01), Chang
patent: 3862842 (1975-01-01), Bissonette
patent: 4084969 (1978-04-01), Nakamura et al.

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