The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 1986
Filed:
Aug. 16, 1985
Yukihide Urata, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide photographic emulsion comprising silver halide, binder, and sensitizing dyes of formulas (I), (II), (III): ##STR1## R.sub.1, R.sub.2 represent substituted or unsubstituted alkyl, one of R.sub.1 and R.sub.2 being sulfoalkyl or carboxyalkyl; R represents alkyl or aralkyl; W.sub.1, W.sub.2, W.sub.3, W.sub.4, being the same or different, represent hydrogen, halogen, aryl, alkyl, substituted alkyl, alkoxy, alkoxycarbonyl, carboxy, or hydroxy, provided W.sub.1 and W.sub.2 are not both a phenyl; X.sup..crclbar. represents an acid anion; n represents 1 or 2, n being 1 when the dye forms an intramolecular salt; ##STR2## R.sub.4, R.sub.5 represent substituted or unsubstituted alkyl; at least one of R.sub.4 and R.sub.5 being sulfoalkyl or carboxyalkyl; R.sub.3 represents ethyl, propyl, or aralkyl; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6, V.sub.7, being the same or different, represent hydrogen, halogen, aryl, alkyl, substituted alkyl, alkoxy, alkoxycarbonyl, carboxy, or hydroxy, provided any of V.sub.1 and V.sub.2, V.sub.2 and V.sub.3, V.sub.3 and V.sub.4, V.sub.5 and V.sub.6, or V.sub.6 and V.sub.7 may combine into a benzene ring; X.sub.1.sup..crclbar. represents an acid anion; m represents 1 or 2, m being 1 when the dye forms an intramolecular salt; ##STR3## R.sub.6, R.sub.7, R.sub.8, being the same or different, represent an aliphatic group; U.sub.1, U.sub.2, U.sub.3, U.sub.4, being the same or different, represent hydrogen, halogen, aliphatic hydrocarbon, acyl, acyloxy, alkoxycarbonyl, carbamoyl, sulfamoyl, cyano, trifluoromethyl or hydroxy; A represents a sulfo or carboxy; X.sub.2.sup..crclbar. represents an acid anion; h is 1 to 6; and e represents 1 or 2.