| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an original plate of a planographic printing plate satisfying a high level of both printing durability and contamination resistance. <P>SOLUTION: The original plate of a planographic printing plate contains an infrared absorption dye and water-insoluble and alkali-soluble resin on a support for a planographic printing plate to which a hydrophilic treatment is provided, and has a positive-type heat sensitive layer that increases solubility with respect to an alkaline aqueous solution by heating. The original plate has an intermediate layer containing a compound, having a functional group capable of interacting with the water-insoluble and alkali-soluble resin is laid between the support for a planographic printing plate and the positive-type heat sensitive layer. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
