| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plate-making method of a lithographic printing plate, by which the lithographic printing plate realizing an on press development and being excellent in plate wearability and image reproducibility is obtained, and a photosensitive lithographic printing plate material used therein and a printing method used thereof. <P>SOLUTION: In the plate-making method of the lithographic printing plate, in which the lithographic printing plate material having a photosensitive layer including a photopolymerization initiator, a binding material, a compound including a polymerizable ethylenic unsaturated bond and a coloring matter having an absorption maximum in the wavelength range of 350-450 nm on a support is image-wise exposed and, after the image-wise exposure, an on press development treatment is performed in order to produce the lithographic printing plate, the photosensitive layer includes a water-soluble polymeric compound as the binding material and a coloring matter expressed by general formula (1) as the coloring matter having the absorption maximum in the wavelength range of 350-450 nm. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
