Negative type silver halide photographic material comprising sil

Details Negative type silver halide photographic material comprising sil Negative type silver halide photographic material comprising sil

1991-10-23

1994-05-10

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, G03C 1035

Patent

active

053106415

ABSTRACT:
A negative type silver halide photographic material having silver halide grains of a core-shell structure. An inner core essentially consists of silver bromide or silver iodobromide and a plurality of shells consists essentially of silver bromide or silver iodobromide. The shells of each silver halide grain have (1) an outermost shell containing silver iodide of 0 to 10 mol %, (2) a highly iodide-containing shell provided inside the outermost shell and having a silver iodide content at least 6 mol % higher than that of the outermost shell, and (3) an intermediate shell provided between the outermost shell and the high iodide-containing shell. The silver iodide content of the intermediate shell is 3 mol % higher than that of the outermost shell and at least 3 mol % lower than that of the high iodide-containing shell.

REFERENCES:
patent: 4444877 (1984-04-01), Koitabashi et al.
patent: 4477564 (1984-10-01), Cellone et al.
patent: 4507386 (1985-03-01), Matsuzaka et al.
patent: 4565778 (1986-01-01), Migamoto et al.
patent: 4614711 (1986-09-01), Sugimoto et al.
patent: 4668614 (1987-05-01), Takada et al.
patent: 4692400 (1987-09-01), Kumashiro et al.
patent: 4990437 (1991-02-01), Iijima et al.

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