Flexographic printing plate precursor

Abstract

An object of the present invention is to provide a flexographic printing plate precursor which exhibits excellent rear end ink receptivity and microcell reproducibility in a case of being used for a flexographic printing plate. The flexographic printing plate precursor of the present invention includes a support and a photosensitive layer disposed above the support, in which all of the following conditions A and B are satisfied. Condition A: in a case where R=(Ef/Eb)×(t−0.6)/0.54, a value of R is 12 or more and 30 or less, Condition B: Ef is 5,000 or more, Here, Eb is a back exposure amount (unit: mJ/square centimeter), and refers to an exposure amount at which a relief depth is 600 μm, Ef is a main exposure amount (unit: mJ/square centimeter), and refers to an exposure amount at which a difference in height between an end part as a convex portion and a central part as a concave portion in a case of forming an image area consisting of a 200 μm convex thin line reaches 4 μm, and t refers to a thickness of the flexographic printing plate precursor from a bottom surface of the support to a surface of the photosensitive layer.

Dependencies are inferred from the claim text.