Silver halide photographic emulsions precipitated in the presence of organic dichalcogenides.

摘要

This invention provides a method of preparing a silver halide photographic emulsion which comprises adding to the silver halide emulsion before or during precipitation a non-labile chalcogen compound represented by Formula I: R<1>-X<1>-X<2>-R<2> (Formula I> It further provides a silver halide photographic emulsion prepared by the above method.