Negative type lithographic printing plate precursor and method of preparing lithographic printing plate

Abstract

A negative type lithographic printing plate precursor includes a support having a hydrophilic surface; and an image recording layer, on the support, containing a polymerization initiator and a polymer compound having a structure represented by Formula 1 in a main chain and an ethylenically unsaturated bond. Further, a method of preparing a lithographic printing plate includes, in order, an exposure step of image-exposing the negative type lithographic printing plate precursor; and a development step of performing development by removing a non-exposed portion of the exposed negative type lithographic printing plate precursor using a developer. In Formula 1, R1 represents an (x+2)-valent aromatic hydrocarbon ring group, and x represents an integer of 1 to 4.

Dependencies are inferred from the claim text.