Konica Corporation

Mitsubishi Chemical Corporation

Takeo Akiyama

Kiyoshi Goto

Yasuo Kojima

Tetsuya Masuda

Miyuki Hosoi

Tetsuya Taniguchi

Nobumasa Sasa

Takaaki Kuroki

Saburou Hiraoka

Shinya Watanabe

Hideaki Mochizuki

Hideaki Mochizuku

Disclosed is a heat sensitive planographic printing plate material comprising a support and provided thereon, a heat sensitive layer containing 10 to 98 weight % of at least one hydrophilic resin selected from the group consisting of gelatin, polyvinyl alcohol and carboxymethyl cellulose, and 2 to 50 weight % of a cross-linking agent cross-linking the hydrophilic resin.

Heat sensitive planographic printing plate, its manufacturing method and image forming method employing the same

A composition dispersing a colorant is disclosed. The dispersion composition comprises a compound represented by formula; ##STR1## Detailed definition is disclosed in the specification.

Pigment dispersion composition

Disclosed is a color image-formable material for forming and transferring a color image. The color image-formable material has a support, a cushion layer provided on the support and color light-sensitive layer containing a light-sensitive composition and a coloring agent provided on the cushion layer. It gives a transferred image by forming a color image portion by imagewise exposure and developing treatment and then transferring the color image portion alone to an image-receiving material. The cushion layer has a hardness of 40 to 85 and a thickness of 15 .mu.m to 100 .mu.m. A process for preparation of the color image-formable material is also disclosed.

Color image forming process through transfer of image portion to

Disclosed are a color image-formable material which comprises a support, a cushion layer provided on the support and a color light-sensitive layer containing a light-sensitive composition and a coloring agent provided on the cushion layer and gives a transferred image by forming a color image portion by imagewise exposure and developing treatment and then transferring the color image portion alone to an image-receiving material,

Color image-formable material and process for preparing the same

A method of producing a printing plate is disclosed, which comprises the steps of a) providing, on an aluminium support, a photo-hardenable light-sensitive layer on a 50 .mu.m or less thick film to obtain a light-sensitive plate, the surface on the light-sensitive layer side of said support is electrolytically etched in a nitric acid solution to have an average surface roughness R.sub.a of 0.1 to 0.6 .mu.m; b) imagewise exposing the photo-hardenable photosensitive layer of the light-sensitive plate; c) applying heat or pressure to the exposed light-sensitive plate; d) removing the exposed light-sensitive layer from the light-sensitive plate to leave an unexposed light-sensitive layer on the aluminium support; and e) overall exposing the unexposed light-sensitive layer to harden the same.

Growing community of inventors

Hino, Japan

Takeo Akiyama