Photographic contrast promoting agents

Details Photographic contrast promoting agents Photographic contrast promoting agents

G - Physics

03

C

G03C 1/06 (2006.01) G03C 1/10 (2006.01)

Patent

CA 2163378

Photographic film nucleating agents comprising aryl sulfonamidophenyl hydrazides containing alkene, alkadienyl, alkapolyenyl or cycloalkenyl substituted pyridinium functionality; these nucleators produce better dot quality and superior contrast characteristics in image-wise exposed film elements and wider compatibility with standard rapid access developers and obviate the need to include boosters in the film or in the developer.

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