Konica Corporation

Mitsuhiro Kubotera

Yuji Tanaka

Shuji Murakami

Makoto Kajiwara

Koichiro Kuroda

A silver halide emulsion containing silver halide grains comprising silver chlorobromide grains or silver chloroiodobromide grains, wherein each of silver halide grains has a silver chloride content of not less than 98% and comprises a silver bromide-containing layer having a silver bromide content of 0.5 to 5%, and the silver bromide-containing layer is located at a depth of 0 to 0.01 &mgr;m from the surface of the grain. A silver halide emulsion comprising silver halide grains containing Compound A having adsorptivity to silver, wherein each of the silver halide grains has a silver chloride content of not less than 90% has a core-shell structure comprised of a core and shell having different contents of Compound A each other, and the content of Compound A in the shell is smaller than the content of Compound A in the core.

SILVER HALIDE EMULSION, PREPARATION METHOD OF SILVER HALIDE EMULSION, SILVER HALIDE LIGHT-SENSITIVE PHOTOGRAPHIC MATERIAL, SILVER HALIDE LIGHT-SENSITIVE COLOR PHOTOGRAPHIC MATERIAL, AND IMAGE FORMING METHOD

A method of manufacturing a silver halide emulsion wherein spectral sensitizing dyes are added after the formation of silver halide grains, and chemically ripening is then carried out at a temperature higher than the addition temperature of the spectral sensitizing dyes at 25.degree. C. to 55.degree. C., is disclosed. A material produced by this method has a high linearity in gradation between the medium density part and the shoulder part, and having a high Dmax value.

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Kanagawa, Japan

Mitsuhiro Kubotera