Silver halide emulsion

Details Silver halide emulsion Silver halide emulsion

1984-08-08

1986-09-30

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, E03C 102

Patent

active

046147110

ABSTRACT:
A silver halide emulsion containing negative working silver halide grains each comprising a core of silver bromide or silver bromoiodide, a first coating layer exterior the core of silver iodide or silver bromoiodide, and a second coating layer exterior the first coating layer composed of silver bromide or silver bromoiodide different from that of the first coating layer in halide composition, and having a projected area diameter-to-thickness ratio of less than 5, in which:
(1) the first coating layer contains more iodide than the core by 10 mol % or more; and
(2) silver in the first coating layer accounts for 0.01 to 30 mol % of the total silver in the grain.

REFERENCES:
patent: 3317322 (1967-05-01), Porter
patent: 3935014 (1976-01-01), Klotzer et al.
patent: 4045228 (1977-08-01), Vanassche et al.
patent: 4477564 (1984-10-01), Cellone et al.
patent: 4495277 (1985-01-01), Becker et al.
patent: 4504570 (1985-03-01), Evans et al.

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