| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a support for a planographic printing plate which is superior in scratch resistance, to obtain a planographic printing original plate which is superior in removal property after being left for a while, in printing resistance, and in an on-the-machine development property when used as a planographic printing plate. <P>SOLUTION: The support 10 for a planographic printing plate includes an aluminum plate 12 and aluminum anodized film 14 formed thereon, the anodized film includes therein micro pores 16 extending in a depth direction from a film surface opposite from the side of the aluminum plate 12, and the micro pore 16 includes a large diameter hole portion 18 extending to a position having a depth of 5-60 nm (depth A) from the anodized film surface and having a predetermined average diameter, and a small diameter hole portion 20 communicated with the bottom of the large diameter hole portion 18, extending to a depth of 900-2,000 nm from the communication position, and having a predetermined average diameter. <P>COPYRIGHT: (C)2012,JPO&INPIT |
