Mdc Max Daetwyler Ag

Ohio Gravure Technologies, Inc.

Eric Serenius

John W Fraser

Curtis Woods

Paul L Holowko

David L Flannery

Michael Duane Christopher

David R Setiz

Wei Zhao

Gaurav Bedi

Jeffrey William Hemmelgarn

A virtual, real-time proofing system and method are shown. The system and method are characterized in that a reconstructed image of a plurality of engraved cells is created using a pixel data signal that is created using a tool path position signal generated by a sensor that senses the movement of a cutter or stylus as it is engraving the cells.

Real-time virtual proofing system and method for gravure engraver

A system and method for reducing and/or eliminating the printed layer-over-layer registration error.

System and method for layer-to-layer compensation and error correction

An error detection apparatus and method for use with engravers, such as gravure engravers. An error value E corresponding to the difference between a set of predetermined setup parameters and actual measurement of a portion of an engraved area on the cylinder is determined. The error value E is then used to adjust the engraver to engrave an actual cut or etch in accordance with the set of predetermined setup parameters. Advantageously, an error detection and correction system is suitable for providing a closed-loop system for engraving a cylinder. The apparatus and method may be used during initial setup or during normal operation of the engraver. Other features include an autofocus routine to facilitate the auto-focus procedure. Also, image processing is further enhanced by gap filling, discontinuity removal, and light calibration methods which may be used alone, in combination with each other, or in combination with the automatic focus system and/or automatic shoe system.

Engraver and method for focusing and measuring areas on a workpiece engraved by the engraver

An engraver having an engraving signal generating system for engraving a workpiece. The engraver includes a setup circuit enabling direct dimensional control of the cavities engraved by the engraver. Controls are provided for setting at least one of a plurality of parameters, such as a black cell width. These parameters are fed to the setup circuit which translates them into multiplication factors for an AC signal and a videosignal. The multiplied signals are combined with an offset signal to produce an engraving signal.

Apparatus and method for engraving a gravure printing cylinder

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Springboro, OH, United States of America

Eric Serenius