Source: {"pile_set_name": "USPTO Backgrounds"}

This invention relates to a light-sensitive silver halide color photographic material containing a novel cyan coupler.
By carrying out color developing processing of a light-sensitive silver halide color photographic material after giving exposure thereto, an aromatic primary amine developing agent reacts with a dye forming coupler (hereinafter merely called "coupler") to form a color image. In this method, color reproduction according to the subtractive color photography is effected, whereby yellow, magenta and cyan color images in complementary color relationships with blue, green and red, respectively, are formed.
As the cyan coupler, generally phenols or naphthols have been widely used, but the cyan coupler selected from phenols and naphthols of the prior art had some problems to be solved. For example, the color images obtained from 2,5-diacylaminophenol type cyan couplers as described in U.S. Pat. No. 2,367,531, No. 2,369,929, No. 2,423,730, No. 2,801,171, etc. are generally inferior in heat fastness, while the acylaminophenol type cyan couplers as described in U.S. Pat. No. 2,772,162, No. 2,895,826, etc. had the drawback that the light fastness of the color image obtained was generally bad. Also, 1-hydroxy-2-naphthoamide type cyan couplers are also insufficient in both light and heat (particularly humid heat) fastness.