Silver halide emulsions with improved speed

Details Silver halide emulsions with improved speed Silver halide emulsions with improved speed

1989-02-23

1990-10-23

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430599, 430608, G03C 108

Patent

active

049651846

ABSTRACT:
Photographic, silver halide emulsions can be additionally sensitized without a deleterious increase in fog, by the addition of an alkali metal salt of 1-napthol-4-sulfonic acid. These emulsions are stable, and have good contrast and top density. The 1-napthol-4-sulfonic acid can be added conveniently from an aqueous solution and is totally compatible with conventional silver halide elements.

REFERENCES:
patent: 2099404 (1937-11-01), Kogel et al.
patent: 2527268 (1950-10-01), Hart et al.
patent: 3193386 (1965-07-01), White
patent: 3874947 (1975-04-01), Hayakawa et al.

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