Direct-positive silver halide emulsion fogged with a tin (II) ch

Details Direct-positive silver halide emulsion fogged with a tin (II) ch Direct-positive silver halide emulsion fogged with a tin (II) ch

1974-01-14

1976-04-20

Louie, Jr., Won H.

Gas separation: apparatus

Solid sorbent apparatus

G03C 128

Patent

active

039516652

ABSTRACT:
The present invention relates to a modification of the sensitivity of photographic silver halide emulsions: A chelate of divalent tin is added to the emulsion before drying.

REFERENCES:
patent: 2487850 (1949-11-01), Carroll
patent: 3501311 (1970-03-01), Lincoln et al.
patent: 3501313 (1970-03-01), Willems et al.
patent: 3549677 (1970-12-01), Griebstein et al.
Westerback, et al., Journal of the American Chemical Society, 87:12, June 20, 1965, pp. 2567-2572.
Research Disclosure, 1973, pp. 44-46.

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