Provided is a planographic printing plate precursor having the advantages of good developability in printers, high sensitivity and a long press life. On a support having a hydrophilic surface with hydrophilic graft polymer chains existing therein, formed is a thermosensitive layer containing a polymer having, in the molecule, a functional group capable of interacting with the hydrophilic graft polymer and a functional group that undergoes hydrophilicity/hydrophobicity conversion through exposure to heat, acid or radiation to fabricate the planographic printing plate precursor.
本发明提供了一种平版印刷板前体,它具有在印刷机中显影性好、灵敏度高和印刷寿命长的优点。在具有亲
水性表面、其中存在亲
水性接枝聚合物链的支撑物上,形成了一个热敏层,该层含有一种聚合物,其分子中的一个官能团能与亲
水性接枝聚合物相互作用,另一个官能团则通过暴露于热、酸或辐射而发生亲
水性/疏
水性转换,从而制造出平版印刷板前体。