Silver halide photographic emulsion

Details Silver halide photographic emulsion Silver halide photographic emulsion

1975-09-04

1976-10-26

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96100, 96124, 96131, 96132, G03C 114

Patent

active

039881555

ABSTRACT:
A silver halide photographic emulsion containing, in supersensitizing amounts, at least one sensitizing dye represented by the following general formula (I) ##EQU1## wherein Z.sub.11 represents the atoms necessary to complete a pyridine nucleus or a quinoline nucleus; Z.sub.12 represents the atoms necessary to complete an oxazole nucleus, a benzoxazole nucleus, a naphthoxazole nucleus, an imidazole nucleus, a benzimidazole nucleus or a naphthoimidazole nucleus; and R.sub.11 and R.sub.12 each represents an aliphatic group with at least one of R.sub.11 and R.sub.12 having a carboxy or sulfo group; and at least one sensitizing dye represented by the following general formula (II) ##EQU2## wherein Z.sub.21 and Z.sub.22, which can be the same or different, each represents the atoms necessary to complete a thiazole nucleus, a benzothiazole nucleus, a selenazole nucleus or a benzoselenazole nucleus; and R.sub.21 and R.sub.22 each represents an aliphatic group with at least one of R.sub.21 and R.sub.22 having a carboxy or sulfo group.

REFERENCES:
patent: 3149105 (1964-09-01), Larive et al.
patent: 3672898 (1972-06-01), Schwan et al.
patent: 3752670 (1973-08-01), Needler et al.
patent: 3847613 (1974-11-01), Sakazume et al.

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