On-press development type lithographic printing plate precursor, method of preparing lithographic printing plate, and lithographic printing method

Abstract

An on-press development type lithographic printing plate precursor includes a support and an image-recording layer on the support. The image-recording layer contains a polymerization initiator, an infrared absorber, a color forming substance precursor, and an auxiliary capable of donating an electron to the infrared absorber. A polymer having an ethylenically unsaturated group and a water-soluble monofunctional monomer are present on a surface of the support on an image-recording layer side, a layer in contact with the support on the image-recording layer side contains the polymer having an ethylenically unsaturated group and the water-soluble monofunctional monomer, or a layer in contact with the support on the image-recording layer side, other than the image-recording layer, contains the polymer having an ethylenically unsaturated group and the image-recording layer contains the water-soluble monofunctional monomer.

Dependencies are inferred from the claim text.