Method for preparing photosensitive silver halide emulsions

Details Method for preparing photosensitive silver halide emulsions Method for preparing photosensitive silver halide emulsions

1980-10-06

1982-06-01

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, 430603, G03C 102, G03C 128

Patent

active

043328873

ABSTRACT:
Narrow grain size distribution silver halide emulsions are prepared by:
1. Forming photosensitive silver halide grains in the presence of a water-soluble thiocyanate compound with a halide/silver molar ratio ranging from not more than about 5% molar excess of halide to not more than about a 25% molar excess of silver; and
2. Growing said grains in the presence of said water-soluble thiocyanate compound for a time sufficient to grow said grains to a predetermined grain size distribution.

REFERENCES:
patent: 2222264 (1940-11-01), Nietz et al.
patent: 3260605 (1966-07-01), Sutherns
patent: 3672901 (1972-06-01), Ohkubo et al.
patent: 4046576 (1977-09-01), Terwilliger et al.
patent: 4150994 (1979-04-01), Maternaghan
patent: 4177071 (1979-12-01), De Brabandere et al.
Photographic Emulsion Chemistry, G. F. Duffin, The Focal Press, London, 1966, p. 59.
Making and Coating Photographic Emulsions, The Focal Press, N.Y., 1964, p. 96.

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