Patent ID: 6808871
Filing Date: 2004-10-26
Classification: G03C

Abstract:
A silver halide emulsion comprising silver halide grains, wherein at least 50% of total grain projected area is accounted for by tabular grains having an aspect ratio of 10 to 100 and at least 50% by number of total grains is accounted for by tabular grains having at least 30 dislocation lines per grain in the fringe portion of the grain, and the emulsion contains a compound having a function of permitting injection of at least two electrons into silver halide via photoexcitation by a single photon wherein said compound having a function of permitting injection of at least two electrons into silver halide via photoexcitation by a single photon is an organic compound capable of forming an (m+n)-valent cation from an n-valent cation radical with an intramolecular cyclization reaction, in which n and m are each an integer of 1 or more.