NEGATIVE PHOTOSENSITIVE COMPOSITION AND NEGATIVE PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE

    公开(公告)号:JP2002341536A

    公开(公告)日:2002-11-27

    申请号:JP2001150669

    申请日:2001-05-21

    Abstract: PROBLEM TO BE SOLVED: To provide a negative photosensitive composition and a negative photosensitive planographic printing plate in which the latitude for preheating can be widened without increasing ablation during exposure. SOLUTION: The negative photosensitive composition contains (a) an alkali- soluble resin, (b) a compound which crosslinks by an acid, (c) a compound which produces an acid by heat, (d) a photo-thermal converting agent and (e) a sulfone compound expressed by general formula (I): R-SO2 -R'. The negative photosensitive lithographic printing plate has a photosensitive layer made of the above photosensitive composition. In formula (I), R and R' is same or different and each represents a substituted or unsubstituted alkyl group, alkenyl group, aryl group or heterocyclic group.

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