| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photosensitive composition which ensures high image quality, high sensitivity and excellent storage stability, to also provide a photosensitive lithographic printing plate material using the same and having good printing durability, and to further provide a material which is good in all of image quality, sensitivity and storage stability as a direct drawing photosensitive material using laser light emitted in a near-infrared region (700-900 nm), and which is excellent in printing property as a direct drawing lithographic printing plate material for an infrared-laser. <P>SOLUTION: The photopolymerizable composition comprises a photopolymerization initiator, an ethylenically unsaturated double bond compound and a polymer binder, wherein the photopolymerization initiator is an organic boron salt having two or more organic boron anions within a molecule and forming the salt with counter cations having a structure represented by formula 1. <P>COPYRIGHT: (C)2008,JPO&INPIT |
