Light sensitive, direct positive silver halide emulsions and...

Details Light sensitive, direct positive silver halide emulsions and... Light sensitive, direct positive silver halide emulsions and...

G - Physics

03

C

96/75

G03C 1/08 (2006.01) G03C 1/485 (2006.01)

Patent

CA 1057106

LIGHT SENSITIVE, DIRECT POSITIVE SILVER HALIDE EMULSIONS AND PROCESS OF MANUFACTURE Abstract Direct positive silver halide emulsions with improved sensitometric properties can be made by fogging the silver halide grains in the presence of at least 100 micromoles per mole of silver halide of a compound of a metal more electropositive than silver, in the presence of a low concentration of free silver ions in the emulsion, and in the presence of a hydrogen ion concentration different from neutrality.

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