Konica Corporation

Konishiroku Photo Industry Co., Ltd.

Minoru Ishikawa

Toshihiko Yagi

Masaru Iwagaki

Hiroshi Shimazaki

Hideo Akamatsu

Hiroshi Inoie

Shigeharu Koboshi

Satoru Kuse

Masao Ishikawa

Eiichi Ueda

Nobuaki Kagawa

Eiichi Sakamoto

Noriki Tachibana

Kenji Kumashiro

Satoshi Nakagawa

Fumio Hamada

Kuniaki Uezawa

Kiyotoshi Yamashita

Hideo Ota

Toshiya Kondou

Katutoyo Suzuki

Hideo Ohta

Kiichi Sato

A novel photographic silver halide emulsion is disclosed, which is useful in a color photographic silver halide material to provide improvements in image quality, storage stability and pressure resistance. The photographic silver halide emulsion comprises silver halide twinned crystal grains each having a ratio of grain diameter to grain thickness of 5 or less which amount to 50% or more by projection area of total grains, wherein X-ray diffraction pattern of the twinned crystal grains with Cu-K.alpha. ray as a radiation source has a (420) diffraction signal having a single peak; and the width of the peak at a height of 0.13 times the maximum peak height, based on the signal intensity, is 1.5 degree or less in a diffraction angle, 2.theta..

Silver halide photographic emulsion materials

A process for manufacturing a silver halide color photographic material is disclosed. The photographic material comprises a blue light-sensitive layer-unit, a green light-sensitive layer-unit and a red light-sensitive layer-unit in which at least one of the light-sensitive layer-units comprises two or three silver halide emulsion layers being substantially the same in spectral sensitivity and different in speed from each other. The manufacturing process comprises steps of

Process for manufacturing silver halide color photographic light

There is disclosed a light-sensitive silver halide photographic material, having two or more light-sensitive silver halide emulsion layers different in color sensitivities on a support, at least one of the light-sensitive silver halide emulsion layer comprises monodispersed silver halide grains containing 8 to 30 mole % of silver halide in core or contains twinned crystal silver halide grains, at least two of the light-sensitive silver halide emulsion layers different in color sensitivities containing a DIR compound capable of releasing a developing inhibitor or developing inhibitor precursor through the reaction with the oxidized product of a developing agent, the developing inhibitor or developing inhibitor precursor released from the DIR compound being diffusive, wherein the following conditions A:

Light-sensitive silver halide color photographic material having

A silver halide photographic material having a layer containing an electrically conductive material formed on one surface of a support and at least one silver halide emulsion layer formed on the other surface of the support is disclosed, wherein the outermost layer on the side where the silver halide emulsion layer is formed contains an organopolysiloxane and a nonionic surfactant having a polyoxyethylene unit, the latter being optionally combined with, or replaced by, a fluorine-containing compound.

Silver halide photographic material with improved antistatic properties

A method for forming color photographic images is disclosed. The method comprises steps of

Method for processing silver halide color photographic light-sensitive

There is disclosed a light-sensitive silver halide photographic material, having two or more light-sensitive silver halide emulsion layers different in color sensitivities on a support, at least two of the light-sensitive silver halide emulsion layers different in color sensitivities containing a DIR compound capable of releasing a developing inhibitor or developing inhibitor precursor through the reaction with the oxidized product of a developing agent, the developing inhibitor or developing inhibitor precursor released from the DIR compound being diffusive, wherein the following conditions A:

Developing inhibitor arrangment in light-sensitive silver halide color

A silver halide photographic material having as essential photographic layers at least one photosensitive silver halide emulsion layer and at least one non-sensitive hydrophilic colloidal layer on a support is disclosed. At least one of said photographic layers contains fine oil globules at a density of 1 or more, and a hardener having at least three functional groups is incorporated in at least one photographic layer containing said fine oil globules and/or at least one photographic layer which is farther from said support than the photographic layer containing said fine oil globules.

Silver halide photographic material

Growing community of inventors

Hino, Japan

Minoru Ishikawa