Ablation layer, photosensitive resin structure, method for producing relief printing plate using said photosensitive resin structure

Abstract

An ablation layer for a photosensitive resin for a relief printing plate, the ablation layer containing at least an acid-modified polymer and an infrared-absorbing agent and having a layer acid value as defined below of 2 mg KOH/g or more and 400 mg KOH/g or less, and a neutralized salt ratio as defined below of 0.9 or less: Layer acid value=(Acid value of the acid-modified polymer)×(Mass ratio of the acid-modified polymer to an entire ablation layer); and Neutralized salt ratio=(Number of moles of polymer wherein acid in the acid-modified polymer exists in neutralized salt state)/(Total number of moles of the acid-modified polymer).

Dependencies are inferred from the claim text.