| abstract |
An infrared sensitive composition and a lithographicnprinting plate precursor having a large difference in alkalinsolubility between the exposed portions and unexposed portionsn(dissolution discrimination), an excellent latitude inndevelopment, and a high sensitivity can be provided when thencomposition is used for the image-forming layer of a lithographicnprinting plate precursor, which is an infrared sensitivencomposition comprising an alkali-soluble resin having anphenolic hydroxyl group (A), a light-heat converting substancen(B) and a leucohydroxy dye (C). |