Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1997-03-10
1998-02-10
Powers, Fiona T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
534775, 534798, 548146, 548181, C09B 2928, C09B 2950, C09B 5714
Patent
active
057170797
ABSTRACT:
There are described color-providing compounds having at least two cyclic 1,3-sulfur-nitrogen moieties and one complete dye or dye intermediate. The color-providing compound is stable in the photographic processing composition but capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex made available as a function of development to liberate a complete dye or dye intermediate in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The color-providing compounds are useful as image-forming materials in color photographic, photothermographic, thermographic, and other processes.
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Viski Peter
Waller David P.
Kispert Jennifer A.
Polaroid Corporation
Powers Fiona T.
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