Photographisches Element, das einen ein 1,2,4,-Triazol freisetzenden Pyrazolon-DIR-Kuppler enthält

This invention provides a photographic element comprising a support bearing one or more silver halide emulsions and one or more pyrazolone magenta dye-forming DIR couplers of structure I: wherein: the R1 substituents are individually selected from halogen atoms and alkyl, phenyl, alkoxy, phenoxy, al...

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Bibliographische Detailangaben
Hauptverfasser:	STEELE, DAVID ARNOLD, MERKEL, PAUL BARRETT, POSLUSNY, JERROLD NEAL
Format:	Patent
Sprache:	ger
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS
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Beschreibung
Zusammenfassung:	This invention provides a photographic element comprising a support bearing one or more silver halide emulsions and one or more pyrazolone magenta dye-forming DIR couplers of structure I: wherein: the R1 substituents are individually selected from halogen atoms and alkyl, phenyl, alkoxy, phenoxy, alkylthio, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, and aryloxycarbonyl groups; n is 0 to 5; R2 is an alkyl group or a phenyl group; and R3 is an alkylthio group, an arylthio group, an alkoxycarbonyl group or an aryloxycarbonyl group.