Silver halide photosensitive material

Details Silver halide photosensitive material Silver halide photosensitive material

1989-05-31

1990-07-31

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430568, 430570, 430571, 430582, 430583, 430599, 430966, G03C 118

Patent

active

049450360

ABSTRACT:
A silver halide photosensitive material is described, comprising two or more monodisperse silver halide emulsions of different average grain size on a support, wherein at least one of the said monodisperse silver halide emulsions has an average grain size of at least 0.7 .mu.m, and at least one of the silver halide emulsions has a smaller average grain size than the other, the average grain size of the silver halide emulsion as a whole being within the range of from 0.33 to 0.54 .mu.m, with a coated silver weight of from 2.3 to 3.8 g/m.sup.2, and which contains a sensitizing dye represented by formula (I) ##STR1## wherein Z and Z.sub.1 each represents a group of non-metallic atoms forming a thiazole nucleus, a benzothiazole nucleus, or a benzoxazole nucleus; R.sub.0 represents an alkyl group having from 1 to 6 carbon atoms, an allyl group, or an aralkyl group; R and R.sub.1 each represents an alkyl group or an aryl group; L, L.sub.1, and L.sub.2 each represents a methine group; X represents an anion; and m represents 0 or 1, and an internal salt is formed when m is 0.

REFERENCES:
patent: 3941595 (1976-03-01), Ranz et al.
patent: 4388401 (1983-06-01), Hasebe et al.
patent: 4659646 (1987-04-01), Inoue
patent: 4677052 (1987-06-01), Inoue
patent: 4689292 (1987-08-01), Metoki et al.
patent: 4746593 (1988-05-01), Kitchin et al.

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