PHOTOGRAPHIC ELEMENT AND PROCESS COMPRISING A DYE RELEASING GROUP

摘要

PHOTOGRAPHIC ELEMENT AND PROCESS COMPRISING A DYE RELEASING GROUP A new photographic coupler comprises a coupling-off group bonded to the coupler at the coupling position represented by the formula: -L-NR1-DYE wherein L is a linking group; NR1 is a substituted nitrogen atom bonded to DYE that together with NR1 is a releasable dye comprising an electrically neutral chromophore. Such a coupler enables dye hue stabilization without mordanting the dye formed. Such a new coupler is useful in a photographic silver halide element and process to provide increased dye density higher contrast dye images, and lower pH sensitivity upon processing.