Method and apparatus for preparing a printing form using vibrational energy
AssigneeE.I. du Pont de Nemours and Company
InventorsCARL BERNARD ARNOLD, THOMAS WILLIAM HARDING
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Abstract
This invention pertains to 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.
Claims29
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.
An apparatus 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:
- (a) means for 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) means for removing at least a portion of the liquefied material;
- wherein the means for heating comprises vibrational energy that induces frictional heating.
Dependencies are inferred from the claim text.