Patent ID: 6426180
Filing Date: 2002-07-30
Classification: G03C,Y10S

Abstract:
A color silver halide photographic element comprising a support bearing:(1) a light sensitive silver halide emulsion layer; (2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a C log P sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a non-silver containing light insensitive layer adjacent to it; and (3) an electron transfer agent releasing compound (ETARC), in or adjacent to said light sensitive silver halide emulsion layer, that releases, upon reaction with oxidized developer, an electron transfer agent having a C log P of at least 2.40.