Manufacturing process for silver halide photographic emulsion

Details Manufacturing process for silver halide photographic emulsion Manufacturing process for silver halide photographic emulsion

1988-11-29

1989-07-11

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430596, 430605, 430606, G03C 136, G03C 1485

Patent

active

048471909

ABSTRACT:
A process for manufacturing a silver halide direct positive type emulsion comprising primarily silver bromide prepared in the presence of a water-soluble rhodium salt said process comprising; simultaneously adding and mixing a silver aqueous solution and a halide aqueous solution to form an aqueous solution containing a hydrophilic colloid, said resultant mixture having a silver potential maintained with a range of from 100 mV to 200 mV, the speed at which the solutions are added being not more than the critical growth speed of existing silver halide grains, and fogging said silver halide grains.

REFERENCES:
patent: 3501307 (1970-03-01), Illingsworth
patent: 3672900 (1972-06-01), Kurz
patent: 3901713 (1975-08-01), Yamasue et al.
patent: 4242445 (1980-12-01), Saito
patent: 4288535 (1981-09-01), Kanisawa et al.
patent: 4334012 (1982-06-01), Migot
patent: 4469783 (1984-09-01), Kuwabara et al.
patent: 4495274 (1985-01-01), Yoshida
patent: 4533627 (1985-08-01), Yates et al.
patent: 4585733 (1986-04-01), Ezaki et al.

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