| 摘要 |
The present invention provides image-forming compositions and photosensitive lithographic plates which are excellent in sensitivity to infrared radiation, latitude of development, treatable area in m<2>, and printing durability. Specifically, the present invention provides an image-forming composition comprising (A) a polymeric compound obtainable by the addition reaction of a resinous polymer having one or more phenolic hydroxyl groups with a silane coupling agent of the following general formula (1) or (2), (B) an acid generator, (C) an infrared absorber, and (D) an alkali-soluble resin, and a photosensitive lithographic plate having this image-forming composition applied onto a substrate. wherein X<1 >and X<2 >each represent a trimethoxysilyl group or the like; G<1 >represents O or COO; R<1 >and R<2 >each independently represents a hydrogen atom or a methoxy group; R<3 >represents (CH2)m which may have a hydrocarbon side chain; G<2 >represents O or COO; R<4 >represents a hydrogen atom or a straight-chain or branched alkyl group; and R<5 >represents (CH2)n which may have a hydrocarbon side chain.
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