Supersensitized silver halide photographic emulsion

Details Supersensitized silver halide photographic emulsion Supersensitized silver halide photographic emulsion

1975-07-28

1977-04-19

Brown, J. Travis

Gas separation: apparatus

Solid sorbent apparatus

Plural solid sorbent beds

96 3, 96 29R, 96 82, 96 74, 96 95, 961141, 96132, 96119PQ, G03C 114

Patent

active

040186105

ABSTRACT:
A spectrally sensitized silver halide photographic emulsion containing, in combination, supersensitizing amounts of at least one sensitizing dye represented by the following general formula (I): ##STR1## wherein Z.sup.1 and Z.sup.2 each represents an atomic group necessary for completing a benzimidazole nucleus, an oxazole nucleus, a benzoxazole nucleus, a naphthoxazole nucleus, a thiazole nucleus, a benzothiazole nucleus, a naphthothiazole nucleus, a selenazole nucleus, a benzoselenazole nucleus or a naphthoselenazole nucleus excepting that both of Z.sup.1 and Z.sup.2 do not simultaneously represent an atomic group necessary for completing an oxazole nucleus, a benzoxazole nucleus or a naphthoxazole nucleus; R.sup.1 and R.sup.2 each represents an aliphatic group which may be substituted and the carbon chain of which may be interrupted with an oxygen atom or a sulfur atom; R.sup.0 represents a hydrogen atom, an alkyl group or an aralkyl group; X.sub.(1).sup.- represents an anion; and m is 1 or 2, with m being 1 when the dye forms an intramolecular salt; and at least one sensitizing dye represented by the following general formula (II): ##STR2## wherein Z.sup.3 and Z.sup.4 each represents an atomic group necessary for completing a pyrroline nucleus, a pyridine nucleus, an indolenine nucleus, a benzimidazole nucleus, an oxazole nucleus, a benzoxazole nucleus, a naphthoxazole nucleus, a thiazoline nucleus, a thiazole nucleus, a benzothiazole nucleus, a naphthothiazole nucleus, a selenazole nucleus, a benzoselenazole nucleus, or a naphthoselenazole nucleus; R.sup.3 and R.sup.4 each represents an aliphatic group which may be substituted and the carbon chain of which may be interrupted with an oxygen atom or a sulfur atom, and at least one of R.sup.3 and R.sup.4 represents an aliphatic group containing a hydroxy group, a carboxy group or a sulfo group; X.sub.(2).sup.- represents an anion; and n is 1 or 2, with n being 1 when the dye forms an intramolecular salt.

REFERENCES:
patent: 2701198 (1955-02-01), Carroll et al.
patent: 3038800 (1962-06-01), Luckey et al.
patent: 3432303 (1969-03-01), Jones et al.
patent: 3667960 (1972-06-01), Shiba et al.
patent: 3717468 (1973-02-01), Sakazume et al.
patent: 3752670 (1973-08-01), Needler et al.
patent: 3847613 (1974-11-01), Sakazume et al.

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