Process for producing photographic silver halide emulsions havin

Details Process for producing photographic silver halide emulsions havin Process for producing photographic silver halide emulsions havin

1976-08-23

1978-01-24

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

961148, G03C 102

Patent

active

040701905

ABSTRACT:
The invention is a process of producing a lithographic silver halide emulsion having a core/shell structure exhibiting improved halftone dot quality and increased photographic speed, comprising: (1) precipitating a silver chloride emulsion in a protective colloid, (2) converting said silver chloride emulsion to a silver bromide emulsion, and (3) precipitating a silver chloride shell on the surfaces of the silver bromide grains.

REFERENCES:
patent: 2592250 (1952-04-01), Davey et al.
patent: 3477852 (1969-11-01), Allentoff
patent: 3561971 (1971-02-01), Pestalozzi
patent: 3957488 (1976-05-01), Klotzer et al.

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