| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a negative-working planographic printing original plate excellent in edge stain preventing effect and adaptable to an infrared laser. <P>SOLUTION: At least opposite two lateral faces of a planographic printing original plate obtained by disposing on a support a recording layer in which an exposed part becomes a hydrophobic region on exposure with IR laser light are coated with a water-soluble protective film. <P>COPYRIGHT: (C)2003,JPO |
