| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing plate material, even through the lamination of a large number of sheets of which with no slip sheet, a printed matter can be obtained with developing no image defect and its aggregate. <P>SOLUTION: In the lithographic printing plate material, which has an image forming layer on one side of an aluminum plate, the side opposite to the side having the image forming layer thereon of the aluminum plate is a side roughened through an electrochemical roughening process and an anodic oxidizing process under the condition that the arithmetic mean roughness (Ra) of the roughened surface is 0.10-0.30 μm and the amount of the anodically oxidized film of the roughened surface is 1.0-10.0 mg/dm<SP>2</SP>. <P>COPYRIGHT: (C)2007,JPO&INPIT |
