Fuji Photo Film Company, Limited

Fujifilm Corporation

Shinji Ikari

Haruyasu Nakatsugawa

Mikio Ihama

Tomoyuki Ohzeki

Tetsuro Mitsui

Kazutaka Takahashi

Naoto Oshima

A silver halide color photographic light-sensitive material, having photographic constituting layers including, on a support, at least one blue-sensitive layer containing a silver halide emulsion, at least one green-sensitive layer containing a silver halide emulsion, at least one red-sensitive layer containing a silver halide emulsion, and at least one hydrophilic colloidal layer, in which a silver chloride content is 95 mol % or more and a silver iodide content is from 0.05 to 0.3 mol % in the silver halide emulsion of the red-sensitive layer, and in which the difference between spectral sensitivities at wavelength of 685 nm and 590 nm is from 1.2 to 2.5 log E or the difference between spectral sensitivities at wavelength of 660 nm and 590 nm is 0.8 to 2.0 log E, for a distribution of the spectral sensitivities when the material is exposed to lights equal in energy at each wavelength.

Silver halide color light-sensitive material

A process for producing a photosensitive silver halide emulsion is disclosed, comprising silver halide grains and a dispersion medium, said process comprising steps of adding a water-soluble silver solution, an aqueous alkali halide solution and an aqueous solution of gelatin having a molecular weight of 5,000 to 30,000 or less to a mixing vessel different from a reactor for the production of emulsion to prepare silver halide fine grains, adding the silver halide fine grains to the reactor for the production of emulsion to grow silver halide grains, and ultrafiltering the silver halide grains during the addition of silver halide fine grains, wherein 50% or more of the entire projected area of said emulsion grains is occupied by silver halide tabular grains having an aspect ratio of 10 or more and a thickness of 0.15 &mgr;m or less.

Production process of silver halide emulsion

Silver halide emulsion, production process thereof, and silver halide photographic light-sensitive material and photothermographic material using the same

Photothermographic material

A surface latent image type silver halide photographic material comprises a support and at least one surface latent image type silver halide emulsion layer provided thereon. Surface latent image type silver halide grains of the emulsion layer contain a cyano-chromium-complex ion represented by the formula (I):

Surface latent image type photographic material containing silver halide

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.sup.-4 to 10.sup.-2 mol per 1 mol of silver. The surface parts of silver halide grains has a thickness of not more than 20.ANG. 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.

Growing community of inventors

Minami-ashigara, Japan

Shinji Ikari