A negative type photosensitive resin composition includes a polymer compound which contains a linking group represented by Formula A-1 in a main chain and an ethylenically unsaturated group; and a polymerization initiator. In Formula A-1, R1 and R2 each independently represent a hydrogen atom or a monovalent organic group, and X1 represents a linking group represented by any of Formulae A-2 to A-6.
A negative type planographic printing plate precursor includes an image recording layer containing the negative type photosensitive resin composition.
A method of preparing a planographic printing plate includes, in order, an exposure step of image-exposing the negative type planographic printing plate precursor; and a development step of performing development by removing a non-exposed portion of the exposed negative type planographic printing plate precursor using a developer.
                            一种负型感光
树脂组合物包括一种聚合物化合物,其主链中含有由式 A-1 所代表的连接基团和
乙烯不饱和基团;以及一种聚合
引发剂。在式 A-1 中,R1 和 R2 各自独立地代表氢原子或一价有机基团,X1 代表由式 A-2 至 A-6 中任何一个所代表的连接基团。
底片型平版印刷板前体包括含有底片型感光
树脂组合物的图像记录层。
制备平版印刷板的方法依次包括:对底片型平版印刷板前体进行图像曝光的曝光步骤;以及使用显影剂去除已曝光底片型平版印刷板前体的未曝光部分的显影步骤。