Direct positive silver halide photographic light-sensitive mater

Details Direct positive silver halide photographic light-sensitive mater Direct positive silver halide photographic light-sensitive mater

1991-05-03

1993-04-27

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430547, 430596, 430597, 430598, 430606, 430963, G03C 136

Patent

active

052061329

ABSTRACT:
A direct positive silver halide photographic light-sensitive material which is improved in gradation and suitable for rapid processing comprises a support having thereon a silver halide emulsion layer containing surface-fogged type direct positive silver halide grains, wherein said direct positive silver halide emulsion layer comprises two or more silver halide emulsions substantially different in sensitivity and/or gradation; the ratio of the total area of (111) face to and total surface area of grains in said emulsions is not less than 50%; and the average silver iodide content of grains in said emulsions is not more than 5 mol%.

REFERENCES:
patent: 4495274 (1985-04-01), Toshida
patent: 4910130 (1990-03-01), Ogi et al.
patent: 4952490 (1990-08-01), Takada et al.
patent: 4983508 (1991-01-01), Ishiguro et al.
patent: 5045443 (1991-09-01), Urabe

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