Patent ID: 6502510
Filing Date: 2003-01-07
Classification: B41C

Abstract:
A method for seamless engraving of a pattern in an electronic engraving machine, comprising the steps of:with an engraving element connected to an engraving control signal, engraving a sequence of cups arranged in an engraving pattern into a rotating printing cylinder engraving line by engraving line; generating the engraving control signal from engraving data that represent gradations of the pattern to be engraved and from a periodic raster signal for generating an engraving raster; for planar engraving of the pattern with the engraving element, executing an axial feed motion along the printing cylinder; engraving the pattern such that a seam at which an upper edge and a lower edge of the pattern meet at a circumference of the printing cylinder is as invisible as possible; and for evaluating the seam of the engraved pattern, producing a color proof of at least one separation color of the pattern from the engraving data in that the engraved pattern is offset in a circumferential direction of the printing cylinder so that the seam lies within a visible area of the color proof.