| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide: a photosensitive composition which enables direct writing with a solid laser, a semiconductor laser and the like emitting infrared radiation and has excellent storage stability and burning smear resistance; a photosensitive lithographic printing plate; and a method for forming a lithographic printing plate. <P>SOLUTION: The photosensitive composition contains: an alkali-soluble resin; an infrared absorbent; and an antioxidant, wherein the antioxidant is preferably a phosphorous ester-based compound or a mercaptoimidazole-based compound. Preferably, the photosensitive composition further contains a cyclic acid anhydride. In the photosensitive lithographic printing plate, a photosensitive layer comprising the photosensitive composition is formed on a support. The method for forming a lithographic printing plate includes subjecting the photosensitive layer of the photosensitive lithographic printing plate to image exposure with actinic rays of ≥700 nm wavelength, and removing an exposed area by dissolution in an alkaline developer. <P>COPYRIGHT: (C)2011,JPO&INPIT |
