Patent ID: 8981254
Filing Date: 2015-03-17
Classification: B41N

Abstract:
1. A method of re-imaging a previously used printing form, the method which comprises: globally cleaning a substrate of the printing form of ink or varnish disposed thereon; utilizing a fluid scouring agent for abrasively treating the substrate globally in order to erase a nanotopographic structuring of a previous printing image used in a prior printing process and to transfer a surface into a defined initial state for subsequent imaging; locally treating image regions of the substrate to be imaged with a new printing image with a pulsed laser beam to thereby produce a locally defined nanoscopic and hydrophobic surface structure by creating different nanostructuring in the substrate without a substantial removal of substrate material; and treating the substrate globally with a hydrophilicity intensifier, to thereby render the substrate locally hydrophilic in previously hydrophobic image regions.