FLEXOGRAPHIC PRINTING ORIGINAL PLATE

摘要

Disclosed is a flexographic printing plate precurs or in which formation of cracks and wrinkles in an infrared ablation layer is suppressed and the scratch resistance of the layer is improved. The precursor comprises a support 12, photosensitive resin layer 18, and an infrared ablation layer 20 that are laminated in the order presented. The binder polymer contained in the infrared ablation layer 20 contains a polymer (A) and an acrylic resin (B). The polymer (A) contains the same structural unit as the structural unit contained in the binder polymer in the photosensitive resin layer. The mass ratio (A/B) of the component (A) with respect to the component (B) is within a range of 1/3 to 3/1. The difference between a plastic hardness (Ha) of the infrared ablation layer 20 and a plastic hardness (Hb) of the photosensitive resin layer 18 is 30 mN/mm 2 or smaller.