| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an original plate for a lithographic printing plate which is superior in any of printing durability, ink-blur staining resistance, erasure staining resistance, and self-staining resistance. <P>SOLUTION: The original plate for the lithographic printing plate has an aluminum substrate which is treated with a solution of pH11.5 to 13.0 including an alkali metal silicate solution to have a 3.0 to 15.0 mg/m<SP>2</SP>surface Si amount, an intermediate layer formed on the aluminum substrate by using a constituent component having an acid radical and a constituent component having an onium radical, and an image forming layer formed on the intermediate layer. <P>COPYRIGHT: (C)2007,JPO&INPIT |
