Patent ID: 6080537
Filing Date: 2000-06-27
Classification: G03C

Abstract:
A silver halide emulsion comprising a dispersing medium and silver halide grains having a variation coefficient of grain size distribution of not more than 20%, at least 50% of total grain projected area of the emulsion being accounted for by tabular grains having major faces and an aspect ratio of at least 5, said tabular grains(a) each having a surface region having an iodide content more than an average iodide content of the silver halide grains,(b) at least 30% by number of the tabular grains having dislocation lines in a central region and a peripheral region of the major faces,(c) the peripheral region having at least a silver chalcogenide nucleus-containing phase,(d) the central region having at least a silver nucleus-containing phase, and(e) the peripheral region having at least 10 dislocation lines per grain.