Patent ID: 6768561
Filing Date: 2004-07-27
Classification: B41C,H04N

Abstract:
A method for signal processing in an electronic engraving machine for engraving a printing form for rotogravure, comprising the steps of:providing engraving data that represent gradations between â€œwhiteâ€  and â€œblackâ€  to be engraved; subjecting the engraving data to a digital filtering to create digitally filtered engraving data for compensation of a faulty lifting motion of an engraving stylus of an engraving element; acquiring an engraving control signal by superimposition of the digitally filtered engraving data with a periodic raster signal for generating an engraving raster; controlling with the engraving control signal a lifting motion of the engraving stylus of the engraving element; and engraving a sequence of cups arranged in the engraving raster into the printing form with the lifting motion of the engraving stylus.