| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive lithographic printing original plate excellent in development latitude. <P>SOLUTION: The lithographic printing original plate has on a support a recording layer containing (A) an infrared absorbent which is a cationic dye having an acid radical, wherein a counter anion to the cation is a multivalent anion whose valence is ≥2, and capable of forming an image upon irradiation with infrared rays. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
