PHOTOTHERMOGRAPHIC REDUCING AGENTS WITH BICYCLIC OR TRICYCLIC SUBSTITUTION

Bis phenol reducing agents incorporating bicyclic and tricyclic substituents ortho to the hydroxyl groups on the aromatic rings have been found to provide photothermographic materials with improved silver efficiency and stability without significant loss in sensitometric properties. L'invention...

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Bibliographische Detailangaben
Hauptverfasser:	HANSEN, ANDREA, LYNNAE, RAMSDEN, WILLIAM, DONALD, LYNCH, DOREEN, CATHERINE, ULRICH, STACY, MARIE
Format:	Patent
Sprache:	eng ; fre
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:	Bis phenol reducing agents incorporating bicyclic and tricyclic substituents ortho to the hydroxyl groups on the aromatic rings have been found to provide photothermographic materials with improved silver efficiency and stability without significant loss in sensitometric properties. L'invention concerne des agents réducteurs bis phénol comprenant des substituants bicycliques et tricyclique en ortho par rapport aux groupements hydroxyle sur les cycles aromatiques, on a découvert que lesdits agents permettent d'obtenir des matériaux photothermographiques présentant une "efficacité en argent" améliorée et une meilleure stabilité, sans perte significative des propriétés sensitométriques.