| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing original plate of a developing on a machine type or an untreated (undeveloped) type which can easily recognize a plate after exposure by controlling the discoloration of a coating liquid with a passage of time, and to provide a method for manufacturing the lithographic printing original plate. <P>SOLUTION: For the lithographic printing original plate which has an image recording layer on a base material and after being exposed like the image, can be printed without going through a developing process, the lithographic printing original plate is featured to have a discoloring layer formed by melting a particle at a temperature of more than a melting point of the particle after applying dispersion liquid of the particle containing a (D)discoloring agent causing a change in absorbance in a visible light area by exposure, and to provide the method for manufacturing the lithographic printing original plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
