| 摘要 |
Photographic elements are disclosed comprising a silver halide emulsion layer having associated therewith a dye forming coupler and a compound of the following Formula I: R<1>R<2>N-C(O)-(R)p-C(O)-NR<3>R<4> wherein R represents a hydrocarbon linking group; p=0 or 1; and each of R<1>, R<2>, R<3 >and R<4 >independently represents an aromatic, cyclic, linear or branched chain hydrocarbon group, or R<1 >and R<2 >or R<3 >and R<4 >combine together to form a ring with the associated nitrogen atom to which they are attached; with the proviso (i) at least one of R<1>, R<2>, R<3 >and R<4 >comprises an aromatic, cyclic, secondary alkyl, or otherwise or branched hydrocarbon group, or (ii) at least R<1 >and R<2 >or R<3 >and R<4 >combine together to form a ring with the associated nitrogen atom. Photographic elements of the present invention upon exposure and photographic processing exhibit good activity and yield dye images that have unexpected and substantial improvements in the stability of the formed image dyes.
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