BLUE-SENSITIVE PIGMENT WITH HETEROCYCLIC SUBSTITUENT

摘要

PURPOSE: To impart excellent color reproducibility to an element regardless of dyestuff having blue sensitivity of a relatively short wavelength and simultane ously to provide excellent speed sensitive response. CONSTITUTION: This photographic element contains a silver halide emulsion spectrally sensitized to blue light by the dyestuff of the formula having the max.. blue sensitivity in <485nm. In the formula, X and X' independently denote the atoms, etc., necessary for completing thiazole, benzothiazole, naphthothiazole, oxazole, benzooxazol enaphthoxaole selenazole, enazole, benzoselenazole, naphthoselenazole, imidazole benzoimidazole or naphthoimidazole; Z1 denotes pyrrole or furan-contg. group, etc.; R1 and R2 independently denote 1 to 10C hydrocarbon; A deniotes paired ions.