Silver halide photographic material

摘要

A silver halide photographic material comprising a support and a silver halide emulsion layer provided thereon. The silver halide emulsion is prepared by nuclear formation, crystal growth and chemical sensitization. All or a part of the nuclear formation or the crystal growth is conducted in the presence of a hexa-coordinated cyano-complex to introduce the complex into crystal lattice of the silver halide. The density of the hexa-coordinated cyano-complex contained in surface parts of silver halide grains is in the range of 10-4 to 10-2 mol per 1 mol of silver. The surface parts of silver halide grains has a thickness of not more than 20 ANGSTROM from the surfaces of the grains. The chemical sensitization is conducted using a gold sensitizer. The silver halide emulsion is prepared using a synthetic polymer as a protective colloid in place of gelatin. In the cases in which gelatin is used, it is present in an amount of not more than 10 g per 1 mol of silver.