Mitsubishi Chemical Industries Limited

Mitsubishi Kasei Corporation

Konica Corporation

Mitsubishi Chemical Corporation

Hiroshi Ide

Shigeki Shimizu

Noriaki Takahashi

Kunio Shimizu

Toshiyuki Urano

Nobumasa Sasa

Shinya Mayama

Hideki Nagasaka

Manabu Watanabe

Akinobu Oshima

Masaaki Tsuchiyama

A photopolymerizable composition comprising at least an addition polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator system, which system comprises (a) a sensitizer of the formula (I): ##STR1## wherein each of R.sup.1 to R.sup.6 is hydrogen, halogen, alkyl, aryl, aralkyl, acyl, alkoxycarbonyl, optionally substituted hydrocarbon ring, optionally substituted heterocyclic residue or --SO.sub.3 --R.sup.8, wherein R.sup.8 is hydrogen, alkyl, aryl, aralkyl, alkali metal, or quaternary ammonium, R.sup.7 is hydrogen, alkyl, aryl, aralkyl, optionally substituted hydrocarbon ring, or optionally substituted heterocyclic group, each of X.sup.1 and X.sup.2 is halogen, alkyl, aryl, aralkyl, optionally substituted hydrocarbon ring, or optionally substituted heterocyclic group, and (b) a titanocene compound.

Polymerizable composition containing pyrromethene type coloring matter

Disclosed is a multi-color transfer image forming method, which comprises subjecting a colored image forming material having a coloration recording layer comprising at least two layers and containing a photosensitive material and a colorant on a support to aqueous development after imagewise exposure, thereby forming a colored image, transferring the colored image to an image receiving member through the outermost surface of the coloration recording layer and then transferring at least one colored image with different hue onto the same image receiving member in conformity with the colored image, characterized in that the layer of the coloration recording layer remotest from the support is a layer adherable to the image receiving member, and only the colored image portion is transferred onto the image receiving member to have the image receiving member surface exposed at the non-image portion of the multi-color image. According to the present invention, the treating process of multi-color transfer image becomes simpler and also a transferred image approximate to a printed matter can be obtained.

Multi-color transfer image forming method to form color proofs

A photosensitive planographic printing plate comprises an aluminum or aluminum alloy plate having an anodic oxidation layer obtained by the anode oxidation in an electrolyte of phosphoric acid or in an electrolyte of mixed acid but containing the phosphoric acid as a main component, and a layer of photopolymerizable photosensitive composition overlaid on the Al or Al alloy plate and containing a polymer binder having a carboxylic acid residue or carboxylic acid anhydride residue, an addition polymerizable unsaturated compound and a photopolymerization initiator.

Photosensitive planographic printing plate

A developer composition for a lithographic printing plate provided with a coated layer composed of a photosensitive polymer having in the main chain thereof groups of formula (I) ##STR1## wherein X and Y independently represent hydrogen, halogen, cyano or nitro and n is an integer of 1 or 2, comprising:

Developer composition for lithographic printing plates

A photopolymerizable photosensitive composition characterized by comprising a photopolymerizable photosensitive resin having polyfunctional ethylenically unsaturated groups in the side chains or end groups thereof, and a photopolymerization initiator.

Photopolymerizable photosensitive composition

A developer composition for a lithographic printing plate provided with a coated layer composed of a photosensitive polymer having in the main chain thereof groups of formula (I) ##STR1## wherein X and Y independently represent hydrogen, halogen, cyano or nitro, and n is an integer of 1 or 2, comprising ethylene glycol monophenyl ether and at least one acid selected from the group consisting of a mineral acid, an organic carboxylic acid and an organic sulfonic acid.

Growing community of inventors

Sagamihara, Japan

Hiroshi Ide