| 摘要 |
PROBLEM TO BE SOLVED: To provide a photopolymerizable planographic printing original plate having sensitivity for visible laser light which hardly causes such problems of scratches during transportation, adhesion between the back surface of the photosensitive layer and the top surface during stacked and peeling of coating films and which does not cause contamination in a nonpicture part. SOLUTION: This photopolymerizable planographic printing original plate is produced by anodically oxidizing an aluminum base body and forming a photopolymerizable photosensitive layer on the anodically oxidized coating film of the aluminum base body. Then a coating layer of 0.1-8.0μm thickness comprising satd. copolymer polyester resin, phenoxy resin, polyvinylacetal resin or vinylidene chloride copolymer resin having >20 deg.C glass transition temp. is formed on the opposite surface of the base body. |
