| 摘要 |
PURPOSE:To improve the adhesiveness of the oily ink of an image part and an image receiving layer and plate wear and to prevent scumming by incorporat ing resin particles contg. functional groups forming at least one kind of groups among specific groups by decomposition into the image receiving layer. CONSTITUTION:At least one kind of the resin particles contg. at least one kind of the functional groups forming at least one kind of the thiol group, phospho group, amino group, sulfo group by decomposition are incorporated into the image receiving layer of the direct drawing type master plate for planographic printing. The outflow of the resin particles by damping water, etc., at the time of printing by the hydrophilicity of the hydroxyl group when said resin particles form said group is prevented by crosslinking at least partly the resin particles. The grain size of the largest particles of the resin particles is preferably <=10mum and the average grain size of said particles is preferably <=1.0mm. The content of the resin particles in the matrix resin of the image receiving layer is preferably 0.1-80wt.%. |
