Method for preparing a printing form using vibrational energy
AssigneeE. I. Du Pont de Nemours and Company
InventorsCarl Bernard Arnold, Thomas William Harding
Life of this patent
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Abstract
A method and apparatus for preparing a relief printing form from a photosensitive element that includes a photopolymerizable composition layer having an exterior surface and capable of being partially liquefied. The method includes the steps of (a) heating the exterior surface of the photopolymerizable composition layer to a temperature sufficient to cause a portion of the layer to liquefy, forming the liquefied material; and (b) removing the liquefied material; wherein the heating step is performed using vibrationally-induced frictional energy.
Claims11
A method for preparing a relief printing form from a photosensitive element having an exterior surface and comprising a layer of a photopolymerizable composition capable of being partially liquefied, comprising the steps of:
- (a) heating the exterior surface of the photosensitive element to a temperature sufficient to cause a portion of the layer to liquefy, forming liquefied material;
- and
- (b) removing at least a portion of the liquefied material;
- wherein the heating step is performed using vibrational energy to induce frictional heating, the vibrational energy being generated from a vibrational assembly comprising a vibrating horn coupled to a transducer, the vibrating horn supporting a development medium into contact with the exterior surface of the photosensitive element, and wherein the removing step comprises separating the development medium from the photosensitive element.
Dependencies are inferred from the claim text.