Patent ID: 6022681
Filing Date: 2000-02-08
Classification: G03C

Abstract:
A method for producing a light-sensitive silver halide photographic emulsion, comprising:(a) a step of forming silver halide fine grain nuclei in a dispersion medium solution;(b) a step of ripening said fine grain nuclei to preferentially eliminate grain nuclei other than tabular grain nuclei; and(c) a step of growing said tabular grain nuclei into tabular grains to form tabular silver halide grains;wherein in step (a), a silver halide nucleus having a chloride content of 10 mol % or more based on the amount of silver contained in the nucleus is formed, and the tabular silver halide grains obtained through steps (a), (b) and (c) are characterized by: (1) having a Br content of 50 mol % or more based on the total silver amount and (2) having a core portion that does not contain Cl, and wherein 90% or more of the entire projected area of the grains is occupied by tabular grains having a {111} face as main planes.