Fuji Photo Film Company, Limited

Fujifilm Corporation

Kaku Sakata

Naonori Makino

A photosensitive lithographic printing plate comprising a hydrophilic support and a photopolymerizable photosensitive layer containing: (i) a sensitizing dye having an absorption maximum in a wavelength range of from 360 to 450 nm; (ii) a hexaarylbisimidazole compound; (iii) an addition polymerizable compound having an ethylenically unsaturated double bond; (iv) a binder polymer; and (v) a mercapto compound represented by the following formula (1) as defined herein.

Photosensitive lithographic printing plate

A silver halide light-sensitive material comprises a support and a silver halide gelatin emulsion layer. The silver halide gelatin emulsion layer or an optionally provided hydrophilic layer contains a tanning developing agent. According to the first embodiment of the present invention, the tanning developing agent has a molecular structure in which two to six benzenediol or benzenetriol rings are connected with a linking group. According to the second embodiment of the invention, the tanning developing agent consists of a polymer having side chains containing benzenediol or benzenetriol rings. According to the third embodiment of the invention, the tanning developing agent consists of a benzenediol or benzenetriol ring having an aliphatic substituent group having 5 to 40 carbon atoms or an aromatic substituent group having 7 to 40 carbon atoms. A tanning developing solution and a lithographic printing plate are also disclosed.

Silver halide light-sensitive material containing tanning developing agent

A silver halide light-sensitive material comprises a support, a hardening layer and a light-sensitive layer in order. The hardening layer contains an ethylenically unsaturated polymerizable compound or a cross-linkable polymer. The light-sensitive layer contains silver halide and fine particles containing a reducing agent. The fine particles are made of a mixture of a reducing agent and a non-reducing compound. A melting point of the mixture is lower than a melting point of the reducing agent. The difference between the melting points is not smaller than 10.degree. C.

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Shizuoka, Japan

Kaku Sakata