INTAGLIO ENGRAVING METHOD AND APPARATUS

摘要

This invention relates to an engraving method and apparatus for engraving a cylinder for printing an intaglio pattern on a web of material. The engraver comprises a driver for rotatably driving the cylinder and a controller for controlling the operation of the engraver and for generating an intaglio engraving signal corresponding to the predetermined intaglio pattern. The invention includes a system and method for engraving mixed patterns of intaglio and non-intaglio areas. In this regard, a controller associated with the engraver analyzes the image data and differentiates the non-intaglio data from intaglio data so that it can be signed an appropriate feed rate for the intaglio and non-intaglio patterns. Using the feed rates, the mixed patterns are engraved.