Nippon Paint Compnay, Ltd.

Koichi Kimoto

Seiji Arimatsu

Takakazu Hase

Yasuyuki Takimoto

Toshitaka Kawanami

Yasushi Umeda

Chitoshi Kawaguchi

Masami Kawabata

Shin Saito

Kunsei Tanabe

Yasusi Umeda

The present invention provides an improvement of the direct lithographic printing plate making process using ink-jet printing, which provides a printing plate having excellent resolution. Accordingly, the present invention provides an improvement of a process for producing a lithographic printing plate comprising selectively forming a light transmittable oxygen barrier film on a photopolymerizable layer of a photosensitive plate, exposing to light and then removing uncured portion on which the oxygen barrier film is not covered, wherein a protective layer which is capable of transmitting oxygen gas and the light to cure the photopolymerizable layer is formed on the photopolymerizable layer, a photosensitive plate therefor and an aqueous ink composition therefor.

Process for producing lithographic printing plate, photosensitive plate

Disclosed is a method for making printing plates which comprises:

Method for directly making printing plates using ink-jet system

Disclosed is a water-developable photosensitive resin composition capable of hot melt molding, which comprises:

Water developable photosensitive resin composition, and resin or

Water-developable photosensitive resin composition and resin or printing

Disclosed is a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (a) a particular xanthene or thioxanthene dyestuff, (b) a photosensitizer selected from the group consisting of N-phenylglycine, 2,4,6-tris(trichloromethyl)-1,3,5-triazine, and a mixture of p-dimethylaminobenzoic acid isopentyl ester and 2,4-diisopropylthioxanthone, and (c) a peroxide.

Photopolymerizable composition containing a certain xanthene or

A photo-sensitive composition for dry formation of image comprising a dyestuff having a photo-fading property, a ketonic sensitizing agent and a high molecular polymer as a binding agent, which can provide a visible image by the irradiation of light and maintain the image without any fixing treatment.

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Hirakata, Japan

Koichi Kimoto