Method for engraving printing cylinders

Details Method for engraving printing cylinders Method for engraving printing cylinders

2006-09-05

2006-09-05

Rogers, Scott A. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C700S175000, C702S035000, C073S659000

Reexamination Certificate

active

07102794

ABSTRACT:
In a method and apparatus for engraving printing cylinders in an electronic engraving machine, an engraving control signal is formed from an image signal, which represents the tonal values of the cups to be engraved, and from a raster signal for generating a printing raster. An engraving stylus of an engraving element controlled by the engraving control signal engraves a printing form engraving line by engraving line in the form of cups arranged in the printing raster in a rotating printing cylinder. Functionability of the engraving stylus is continuously checked during engraving of the printing cylinder by a digital filtering of the engraving control signal in an engraving stylus monitoring device. When damage is found, a control signal is generated that aborts the engraving, or acoustically or optically signals the identified damage to the engraving stylus.

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