Patent ID: 6747750
Filing Date: 2004-06-08
Classification: B41C,H04N,Y10T

Abstract:
A method for engraving printing cylinders using an engraving member in an electronic engraving machine, comprising the steps of:with an engraving stylus controlled by an engraving signal of an engraving member engraving a series of steps arranged in a printing grid into a rotating printing cylinder; converting an image signal that represents tone values between â€œlightâ€  and â€œdarkâ€  of the steps that are to be engraved and a periodic grid signal for generating the printing grid into the engraving signal in accordance with a transfer function; and to compensate disturbing influences of operating temperature fluctuations of the engraving member on the tone values of the steps measuring operating temperature in the engraving member at at least one measurement location; and correcting the engraving signal for compensating fluctuations of the operating temperature by modifying at least one transmission coefficient of the transfer function dependent on at least one measured operating temperature.