Patent ID: 9740099
Date: 2017-08-22
CPC Classifications: G03F

Claim:
1. A method of making a relief image printing element comprising a plurality of relief printing dots, the method comprising the steps of: a) providing at least one photocurable layer disposed on a backing layer, the at least one photocurable layer being capable of being selectively crosslinked and cured upon exposure to actinic radiation, the at least one photocurable layer comprising: b) imagewise exposing the at least one photocurable layer to actinic radiation to selectively crosslink and cure portions of the at least one photocurable layer; and c) developing the relief image printing element, to separate and remove uncrosslinked and uncured portions of the at least one photocurable layer to reveal a relief image therein, wherein the relief image comprises the plurality of relief printing dots, and wherein the plurality of relief printing dots exhibit an edge sharpness of the dots such that the ratio of the radius of curvature at the intersection of the shoulder and the top surface of the dot, r wherein the step of imagewise exposing the at least one photocurable layer to actinic radiation is conducted in the presence of atmospheric oxygen.