| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive planographic printing plate precursor that can be subjected to direct platemaking by scanning exposure based on digital signal, and excels in the reproducibility of a high definition image, excels in printing durability of a small-area image portion, such as dots or fine lines, and excels in chemical resistance to chemicals. <P>SOLUTION: The planographic printing plate precursor comprises a recording layer on a support, the recording layer including a lower layer containing a polymer compound, having a constituent expressed by Formula (I) and an upper layer that contains a water-insoluble and alkali-soluble resin and an IR absorber and increases in solubility with respect to alkaline aqueous solution due to exposure. In the Formula (I), n represents an integer from 0 to 2 and A represents an aryl group. <P>COPYRIGHT: (C)2008,JPO&INPIT |
