Photographic material and process comprising dir coupler

A photographic DIR (development inhibitor-releasing) acetanilide coupler containing a carboxy group on the anilide moiety or a DIR naphtholic coupler containing on the 2-position a -CONH2 or -CONHCH3 group, capable upon oxidative coupling of forming a dye capable of being washed out of a photographi...

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Bibliographische Detailangaben
Hauptverfasser:	BEGLEY, WILLIAM JAMES, LING, HANS GWAY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HOLOGRAPHY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A photographic DIR (development inhibitor-releasing) acetanilide coupler containing a carboxy group on the anilide moiety or a DIR naphtholic coupler containing on the 2-position a -CONH2 or -CONHCH3 group, capable upon oxidative coupling of forming a dye capable of being washed out of a photographic element upon processing, contains, in the coupling position, a coupling-off group comprising, in sequence, at least one ballasted linking group and at least one releasable development-inhibitor group (INH) which is a mercaptotetrazole group which enables a Log P in a pH 10 buffer of lower than -0.8. Such a DIR coupler is especially useful in a color photographic silver halide material and process which enables the dye formed from the DIR coupler to be washed out of the photographic material upon processing and enhanced color saturation through interimage effects.