| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for preparing a coating liquid for a plate making layer, with which a coating liquid for producing a negative lithographic printing plate material having superior stability at storage and high sensitivity is obtained, and to provide a method for producing a negative lithographic printing plate that uses the coating liquid for a plate making layer. <P>SOLUTION: The method for preparing a coating liquid for a plate making layer comprises a first step of adjusting the pH of an acid-crosslinkable compound to be in a range of 2.5-6, and a second step of preparing a coating liquid for a plate making layer, by mixing the acid-crosslinkable compound of which the pH has been adjusted to above range, an alkali-soluble resin, an acid generator and an infrared absorber. The method for producing a lithographic printing material includes applying the coating liquid for a plate making layer onto a support to form a plate making layer. <P>COPYRIGHT: (C)2008,JPO&INPIT |
