Sun Chemical Corporation

Penny M Mullen

John F Pilot

Allan P Piechowski

Burton H Waxman

Syeda Husain

Shirley M Madamba

A hybrid lith photographic film substantially resistant to the formation of scratch-related defects that occur during the manufacturing and handling process having an anti-abrasion coating on the silver halide emulsion layer containing a polyalkylene oxide surfactant.

Reduced scratch sensitization in nucleated photographic film

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.

Photographic contrast promoting agents

The present invention features a negative-type, silver halide photographic emulsion containing hydrazides that has reduced scratch sensitivity (i.e., the emulsion will have a reduced tendency to develop black scratches on non-exposed areas). The emulsion will resist developing black scratches due to the introduction to the emulsion of hydroquinone and ascorbate. The stability of the emulsion is further enhanced by the addition of sodium formaldehyde bisulfite.

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Howell, NJ, United States of America

Penny M Mullen