Konishiroku Photo Industry Co., Ltd.

Yoshikazu Watanabe

Hiroshi Menjo

Kazuo Kato

Satoru Shimba

Motoaki Tanaka

Nobuo Sakamoto

Toshifumi Iijima

Toshihiko Yagi

Hiroshi Shimazaki

Kenji Kumashiro

Kenji Ito

Kiyotoshi Yamashita

Yoshiro Shigetomi

A process for the preparation of a light-sensitive silver halide photographic material comprising a support, a silver halide emulsion layer, and a non-light-sensitive hydrophilic colloid layer which consists essentially of a plurality of layer elements; a process comprises incorporating oil particles into at least one of the elements, so that the oil particle density of the outermost layer element is not the highest of the oil particle densities of all of the elements.

Process for the production of light-sensitive silver halide photographic

Disclosed is a light-sensitive silver halide color photographic material in which a DIR compound capable of releasing a diffusible development inhibitor or precursor thereof by the reaction with an oxidized form of a color developing agent is employed in combination with a non-diffusible dye and which sastisfies Condition A and B recited in the specification. By using the color light-sensitive material according to the present invention, the sharpness, particularly the edge effect (including the fringe effect and the border effect) of a photographic image has been greatly improved.

Light-sensitive silver halide color photographic material with

A silver halide photographic material is disclosed. It contains per 100 g of silver at least 40 mg of a water-soluble compound comprising an element of group VIII of the periodic table and having a molecular weight of at least 100, and 1.2 to 120 mg of a black-and-white silver halide developing agent. The material has improved gradation characteristics and is subject to minimum variation in photographic characteristics.

Silver halide photographic material

Disclosed is a light-sensitive silver halide color photographic material comprising at least one light-sensitive layer, which is constituted of a plurality of silver halide emulsion layers having substantially the same color sensitiveness but being different in sensitivities and contains a dye image-forming coupler, provided by coating on a support, said material being constituted so as to satisfy at the same time the requirements that (a) said plurality of silver halide emulsion layers in said light-sensitive layer are provided by coating in the order from the support side a low sensitivity emulsion layer, medium sensitivity emulsion layer and high sensitivity emulsion layer, (b) a non-sensitive intermediate layer is provided by coating between said low sensitivity emulsion layer and said medium sensitivity emulsion layer, (c) the density of a dye image-forming coupler in said medium sensitivity emulsion layer is 10 to 60% of the density of a dye image forming coupler in said low sensitivity emulsion layer; and (d) the maximum color-formed density (D) in said medium sensitivity emulsion layer is 0.6&lt;D&lt;1.2.

Light-sensitive silver halide color photographic material comprising

A silver halide photographic material having formed on a support two or more layers that have different light sensitivities but have substantially the same color sensitivity is disclosed. In the material, the layer having the highest light sensitivity contains only a compound of formula (I) as a DIR compound and at least one of the remaining layers contains at least one compound of formula (II) as a DIR compound:

A silver halide color photographic material in which the photographic characteristics do not deteriorate when contacted with formaldehyde.

Silver halide color photographic materials

Silver halide photographic material having at least one light sensitive silver halide emulsion layer, at least one non-light sensitive hydrophilic colloidal layer, and optionally a third type of layer, wherein at least one of said emulsion layers, colloid layers, or third type of layers has, in a single layer, both a magenta coupler of Formula I and a development inhibitor releasing compound having a development inhibitor radical of Formula II or III, said Formula is wherein R.sub.1 is selected from benzamido, anilino, and phenylureido, each having a sulfonamido group and R.sub.2 is selected from aryl and heterocyclic groups; said Formula II is ##STR1## wherein R.sub.3 is selected from hydrogen, halogen, acylamino, alkyl, benzothiazolinylidenamino and phenyl substituted alkoxy; said Formula III is ##STR2## wherein X is a group of non-metallic atoms necessary to complete, together with the C.dbd.N group, a five or six membered heterocyclic ring.

Silver halide color photographic light-sensitive material

A silver halide photographic material having formed on a support two or more layers that are sensitive to the lights of substantially the same spectral region but different in light sensitivity is disclosed. At least one of the layers other than the one having maximum light sensitivity contains at least 40 mg, per 100 g of silver, of a water-soluble compound containing an element of Group VIII of the periodic table which has a molecular weight of 100 or more. The material has a wide latitude for exposure, and this latitude will not vary greatly with time during storage.

A silver halide photosensitive material comprising a support, a silver halide photosensitive layer, and a protective layer formed on said support. The protective layer is essentially composed on a plurality of non-photosensitive hydrophilic colloidal layers at least one of which contains oil particles. The outermost layer of the hydrophilic colloidal layers contains a matting agent in the form of colloidal particles and has a thickness of not more than one fourth of the average size of the matting agent particles and wherein the density of the oil particles in said outermost layer does not exceed 0.2 by volume of the binder, and that of the oil particles in the protective layers other than the outermost layer is in the range of 0.1 to 0.8.

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Hino, Japan

Yoshikazu Watanabe