PHOTOGRAPHIC RECORDING MATERIAL CONTAINING A PRECURSOR OF A PHOTOGRAPHICALLY-ACTIVE COMPOUND

"Photographic recording material containing a precursor of a photographically active compound" Precursor compounds from which photographicallyactive compounds are released with a time delay correspond to the following general formula < IMG > wherein A represents the residue of a comp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BERGTHALLER, PETER, MATEJEC, REINHARD, ODENWAELDER, HEINRICH
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY METALLURGY ORGANIC CHEMISTRY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS
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Beschreibung
Zusammenfassung:	"Photographic recording material containing a precursor of a photographically active compound" Precursor compounds from which photographicallyactive compounds are released with a time delay correspond to the following general formula < IMG > wherein A represents the residue of a compound which undergoes oxidative coupling; X represents -O-, -S- or -NR1 -; Y represents a releasable group which may consist of or contain the residue of a photographicallyactive compound; and R represents a group for controlling the kinetics of release. Advantageous pictorial properties (interimage effect, edge effect, modulation transfer function) are obtained with compound according to the present invention if the photographically-active residue is the residue of a development inhibitor.