Konishiroku Photo Industry Co., Ltd.

Konishiroku Photo Co. Ltd.

Hidehiko Ishikawa

Eiichi Sakamoto

Noboru Fujimori

Katsuo Mogaki

Yasuo Uchida

Haruhiko Sato

Masanobu Oguchi

Kaiichiro Sakazume

Kiyoshi Izawa

Shinichi Nakamura

Shui Sato

Masahiko Taguchi

Mikio Sato

Haruyoshi Okuyama

Haruyoski Okuyama

In a color printing method, a color photosensitive material is exposed in the photographing step to object illuminating light, which is recorded thereon as an optical density by photographic treatments. In the printing step, the optical density is detected to determine blue, green and red exposures, which cause the object illuminating light to be reproduced on a color positive photosensitive material so as to have neutal gray or to be colored to a standard color. An object image on the color/photosensitive material is printed on the color positive photosensitive material with the most suitable color reproduction with the same three-color component exposures as those determined in printing the object illuminating light.

Color printing method

In a color printing method, a color photosensitive material is exposed in the photographing step to object illuminating light, which is recorded thereon as an optical density by photographic treatments. In the printing step, the optical density is detected to determine blue, green and red exposures, which cause the object illuminating light to be reproduced on a color positive photosensitive material so as to have neutral gray or to be colored to a standard color. An object image on the color photosensitive material is printed on the color positive photosensitive material with the most suitable color reproduction with the same three-color component exposures as those determined in printing the object illuminating light.

A method of bleaching an imagewise exposed and then developed silver halide photosensitive material for color photography wherein said material contains a red sensitive silver halide emulsion layer having at least one of a particular group of compounds and treating said photosensitive material with a bleaching or bleach-fixing solution containing an organic metal chelate compound.

Silver halide photosensitive material for color photography

Novel light-sensitive silver halide photographic materials comprising at least one sensitizing dye having the following formula: ##STR1## wherein Z represents a non-metallic atom group necessary for completing a three membered heterocyclic ring, R represents an alkyl or a substituted alkyl radical, R.sub.1 and R.sub.2 represent hydrogen atoms or lower alkyl radicals, R.sub.3 represents a hydrogen atom, an alkyl or alkoxyl radical, m represents an integer of 0 or 1, X represents an acid anion and forms an inner salt when m is 0, and n represents an integer of 1 or 2.

Light-sensitive silver halide photographic materials

A silver halide photosensitive element using specifically defined yellow, magenta and cyan color couplers in the individual respectively blue, green and red-sensitive layers.

Silver halide multilayer photosensitive material

A process for the preparation of silver halide photographic emulsions, characterized in that a water-soluble rhodium salt and an effective stabilizing amount of a compound taken from the class consisting of adenine, guanine, uracil, cytosine and thymine is added to a silver halide photographic emulsion prior to completion of the physical ripening thereof.

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Odawara, Japan

Hidehiko Ishikawa