| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a processing liquid for lithographic printing plate development which is safe and exhibits an excellent developability and processing capacity, and to provide a method of producing a lithographic printing plate using this processing liquid, which can be employed for single-liquid processing and avoids a reduction in printing durability when the printing plate is stored after development until the time comes for printing, and which also provides nonimage areas that are resistant to scumming when printing is carried out. <P>SOLUTION: The processing liquid for lithographic printing plate development contains (1) a borate and (2) at least one selected from a water-soluble polymer compound and a surfactant. The method of producing a lithographic printing plate comprises: after imagewise photoexposing a negative-working lithographic printing plate precursor that has an image recording layer containing the (i), (ii), (iii), and (iv) described below on a hydrophilic support, developing the negative-working lithographic printing plate precursor with the processing liquid: (i) sensitizing dye, (ii) a photopolymerization initiator, (iii) an addition-polymerizable compound that has an ethylenically unsaturated double bond, (iv) binder polymer. <P>COPYRIGHT: (C)2010,JPO&INPIT |
