Fuji Photo Film Company, Limited

Fujifilm Corporation

Seiji Hatano

Yoshihisa Tsukada

Terukazu Yanagi

Mamoru Sakurazawa

Makiko Yokoi

Tetsuya Watanabe

Kousuke Watanabe

Tomokazu Yasuda

Hirokazu Hashimoto

Hajime Nakagawa

Masashi Ogiyama

Taro Hashizume

Taisuke Fujimoto

An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye being a complex of six azo dyes and seven transition metal ions. A further aspect of the present invention relates to a method of recording information onto the optical information recording medium and a novel azo metal complex dye.

Optical information recording medium, method of recording information and azo metal complex dye

Disclosed is a silver halide photographic light-sensitive material, which has at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z-SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.

Silver halide photographic light-sensitive material, photographic emulsion, and mercapto group-containing polymer compound used for them

A photothermographic image-recording material with improved storability before image formation and improved coating characteristics, which has a support having provided thereon an image-forming layer, the layer having at least one light-insensitive organic silver salt, a reducing agent for silver ion and a binder, wherein the binder has a polymer having a recurring unit represented by the formula (1), and the content of the recurring unit represented by the formula (1) in the polymer is from 0.1 to 50% by weight.

Photothermographic image-recording material

Disclosed is a silver halide photographic light-sensitive material, which comprises at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z&#x2014;SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.

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Kanagawa, Japan

Seiji Hatano