Patent ID: 7229749
Filing Date: 2007-06-12
Classification: G03C

Abstract:
1. A silver halide photographic emulsion, wherein 70% or more of the total projected area of silver halide grains is occupied by silver halide grains satisfying the following requirements (a) to (d) and (f): (a) said silver halide grains comprise a tabular silver halide host grain with an aspect ratio of 12 or more having two mutually parallel principal planes and a silver halide protrusion portion bonded by epitaxial junction on the surface of the host grain; (b) a silver bromide content of the host grain and the protrusion portion both are 70 mol % or more; (c) when an average silver iodide content of all grains is I mol %, the average silver iodide content of the region of 8%, based on the silver amount of the host grain, of the outer shell of the host grain is (I+12) mol % or less; (d) the protrusion portion contains pseudo-halides; and (f) when the average silver iodide content of all grains is I mol %, the silver iodide content of the protrusion portion is I mol % or less.