BLACK-AND-WHITE SEPIA KIT

PROBLEM TO BE SOLVED: To provide an improved means of providing warm sepia images using great many varieties of silver halide photographic positive materials and providing an image having improved stability. SOLUTION: A two-part sepia kit can be used so as to give a desired stable warm sepia image i...

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Bibliographische Detailangaben
Hauptverfasser:	MCGUCKIN HUGH G, BADGER JOHN S, VALVO DAVID J
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To provide an improved means of providing warm sepia images using great many varieties of silver halide photographic positive materials and providing an image having improved stability. SOLUTION: A two-part sepia kit can be used so as to give a desired stable warm sepia image in a black-and-white photographic positive or negative image such as a black-and-white photographic print. The first part of the kit contains a silver bleaching composition comprising hexacyanoferrate ions and halide ions as bleaching agents in a molar ratio of at least 2.25:1. The second part is a toning composition containing a sulfur-containing toning agent.