PHOTOGRAPHIC SILVER HALIDE COMPOSITON

PURPOSE: To attain increased dyestuff density and image contrast having the stable hues of dyestuff by incorporating at least one kind of couplers having specific coupling off groups into the compsn. CONSTITUTION: At least one kind of the couplers having the coupling off groups expressed by formula...

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Bibliographische Detailangaben
Hauptverfasser:	JIYARETSUDO BEN MUUBERII, SUTEIIBUN POORU SHINGAA
Format:	Patent
Sprache:	eng
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:	PURPOSE: To attain increased dyestuff density and image contrast having the stable hues of dyestuff by incorporating at least one kind of couplers having specific coupling off groups into the compsn. CONSTITUTION: At least one kind of the couplers having the coupling off groups expressed by formula I are incorporated into the compsn. (In the formula, L is a combination group, NR is a substd. nitrogen atom coupled to DYE and DYE is releasable dyestuff contg. an electrically neutral chromophore together with NR ). As a result, the dyestuff is stabilized and the formation of the increased dyestuff density is made possible. In addition, the contrast leading to the improved image is increased by using the higher concn. of the image reforming compds. in the photographic element.