JPS6241263B

PURPOSE:To use a specified merocyanine dye as a photographic dye having superior stability on standing in an aqueous soln. and free from residual coloring after development. CONSTITUTION:A merocyanine dye having a substituted indolenyl group at the 4- position of the pyrazolone ring through a methin...

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Bibliographische Detailangaben
Hauptverfasser:	SATO SHOICHI, AKASHI MEGUMI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY DYES ELECTROGRAPHY HOLOGRAPHY LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS POLISHES
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Beschreibung
Zusammenfassung:	PURPOSE:To use a specified merocyanine dye as a photographic dye having superior stability on standing in an aqueous soln. and free from residual coloring after development. CONSTITUTION:A merocyanine dye having a substituted indolenyl group at the 4- position of the pyrazolone ring through a methine chain and represented by the general formula [where R1 is alkyl, aryl, alkoxycarbonyl, carboxy, amino, anilino, sulfamoyl, acylamino or hydroxy; and R2 is alkyl (aryl) having a sulfo group] is used as a light absorbing dye for a silver halide photographic material. When the photographic emulsion layer is colored, the above-mentioned dye is preferably added in a concn. of about 1-3%.