Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1987-01-14
1989-05-16
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430267, 430522, 430606, 430949, G03C 136
Patent
active
048309508
ABSTRACT:
A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer; wherein said emulsion layer comprises a silver chloride emulsion or a silver chlorobromide emulsion containing 90 mol % or more silver chloride, which is prepared in the presence of a water-soluble rhodium salt in an amount of 1.times.10.sup.-7 to 2.times.10.sup.-5 mol per mol of silver halide; and wherein at least one of said emulsion layer and hydrophilic colloidal layers of said material contains a dye compound represented by formula (I) ##STR1## wherein: R.sub.1 represents an alkyl group, an alkoxy group, a hydroxy group, an amino group, a substituted amino group, an alkoxycarbonyl group, a carboxy group, a cyano group, a carbamoyl group, a sulfamoyl group, an ureido group, a thioureido group, an acylamido group, a sulfonamido group or a phenyl group, Q represents a sulfoalkyl group, a sulfoalkoxyalkyl group, or an aryl group having at least one sulfo group; R.sub.2 represents a hydrogen atom, an alkyl group, an alkoxy group, a hydroxy group or a halogen atom, and R.sub.3 and R.sub.4, which may be the same or different, each represents an alkyl group or a substituted alkyl group, or when taken together, R.sub.3 and R.sub.4 may form a 5- to 6-membered ring, provided that R.sub.1, R.sub.3, and R.sub.4 do not represent a methyl group at the same time.
REFERENCES:
patent: 3984247 (1976-10-01), Nakamura et al.
patent: 4452882 (1984-06-01), Akimura et al.
patent: 4681836 (1987-07-01), Inoue et al.
patent: 4762769 (1988-08-01), Takahashi et al.
Adachi Keiichi
Kuwabara Ken-ichi
Okada Masahiro
Takahashi Toshiro
Fuji Photo Film Co. , Ltd.
Michl Paul R.
Wright Lee G.
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