| 摘要 |
A method of tailoring the shape of a plurality of relief printing dots created in a photosensitive printing blank during a platemaking process is described. The method includes the steps of: (a) selectively exposing at least one photocurable layer to a source of actinic radiation to selectively crosslink and cure the at least one photocurable layer; and (b) developing the exposed at least one photocurable layer to reveal the relief image therein, said relief image comprising the plurality of relief printing dots. The source of actinic radiation comprises at least one source of UV light in the UV-A range and at least one source of light in the UV-C range and the at least one photocurable layer is simultaneously exposed to the at least one source of UV light in the UV-A range and the at least one source of UV light in the UV-C range. As a result, printing dots are produced having at least one geometric characteristic selected from the group consisting of a desired planarity of a top surface of the relief printing dots, a desired shoulder angle of the relief printing dots and a desired edge sharpness of the relief printing dots. |
