| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an original lithographic printing plate capable of obtaining a lithographic printing plate excellent in resistance to plate wear by suppressing the occurrence of local remaining film and development scum. <P>SOLUTION: The original lithographic printing plate has an image recording layer which contains an alkali-soluble resin and an infrared ray absorber and in which the alkali-solubility of an exposure part increases after infrared ray exposure, on a support, wherein the support is formed by using an aluminum alloy plate wherein the density, on the surface, of an inter-metallic compound having a circle-equivalent diameter of 0.2 μm or more is 35,000 pieces/mm<SP>2</SP>or more. <P>COPYRIGHT: (C)2011,JPO&INPIT |
