| 摘要 |
<p>A planographic printing plate precursor comprising a hydrophilic support having a surface roughness (Ra) in a range of from 0.45 to 0.60, and, on the support, a recording layer containing a phenolic resin, an infrared absorber and a polymer having at least one selected from the group consisting of a structural unit represented by the following formula (I) and a structural unit represented by the following formula (II). In the Formulae (I) and (II), R 1 represents a hydrogen atom or an alkyl group; z represents -O- or -NR 2 - wherein R 2 represents a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group; Ar 1 and Ar 2 each independently represent an aromatic group, and at least one of Ar 1 and Ar 2 represents a heteroaromatic group; and a and b each independently represent 0 or 1.</p> |
