PURPOSE: To form a photosensitive material which is freely controlled of timings at which photographically useful groups are released by contg. specific compds. in the constituting layers of a silver halide photosensitive material.
CONSTITUTION: The compds. (e.g.; the compds. expressed by the formula II) expressed by the formulaI(Coup is coupling component for the oxidant of color developing agents; R1, R2 are H, alkyl, aryl; Z is a constituting element for formation of 6-membered heterocycles; PuG is a photographycally effective group (e.g.; mercaptotetrazole group); PuG is released after Coup is eliminated from the heterocycles) are incorporated in a photosensitive silver halide emulsion layer or the adjacent layer thereof at about 0.0005W0.1mol in one mole silver halide.
SATOU RIYOUSUKE
SUGITA HIROSHI
