N-BRANCHED ALKYL SUBSTITUTED CARBAMOYLHYDRAZINE COLOR DEVELOPING AGENT, SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL USING THE SAME AND IMAGE FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To obtain a high coloring silver halide color photographic sensitive material having vividness of a hue and shelf stability of a color image. SOLUTION: This color developing agent represented by the formula is incorporated into a photographic constituent layer. In the formula, Ca is carbon atom, Q is a group of atoms forming an unsaturated ring together with C a and R1 and R2 are each a linear or cyclic alkyl or may bond to each other to form a ring.