Photographic silver halide emulsion comprising epitaxial composi

Details Photographic silver halide emulsion comprising epitaxial composi Photographic silver halide emulsion comprising epitaxial composi

1980-05-29

1982-09-14

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430568, 430569, G03C 102

Patent

active

043496229

ABSTRACT:
There are provided a photographic silver halide emulsion which comprises composite silver halide crystals consisting essentially of multi-faceted silver iodobromide crystals containing 15-40 mole % of silver iodide and silver halide crystals containing not more than 10 mole % of silver iodide, said silver halide crystals being combined as epitaxial silver halide crystals with said multi-faceted silver iodobromide crystals, at least half of the facetes of said multi-faceted crystals being substantially free of said epitaxial crystals and the amount of said epitaxial crystals being limited to not more than 75 mole % based on the total silver halide forming said composite crystals, a silver halide emulsion comprising silver halide grains consisting essentially of silver iodobromide containing 15-40 mole % of silver iodide substantially homogeneously distributed therein, and a process for preparing the same.

REFERENCES:
patent: 4094684 (1978-06-01), Maskasky
patent: 4142900 (1979-03-01), Maskasky
patent: 4150994 (1979-04-01), Maternaghan
patent: 4184878 (1980-01-01), Maternaghan

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