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United States Patent 6,423,931
Penz ,   et al. July 23, 2002
Method of controlling the movement of a laser engraving head

Abstract

A method of forming an image in a surface by a laser mounted for orthogonal movement parallel to the surface by correlating the time lag between energizing and discharging the laser to a profile of the velocity at which the laser is moved relative to the surface. The image may be formed by writing or engraving.

Inventors: Penz; Andreas (Vienna, AT); Fazeny; Stephan (Gmunden, AT)
Assignee: TROTEC Produktions- und Vertriebs GmbH (Linz, AT)
Appl. No.: 693024
Filed: October 21, 2000

Current U.S. Class: 219/121.69
Intern'l Class: B23K 026/36
Field of Search: 219/121.6,121.61,121.28,121.69,121.8,121.81 700/166 347/224,250,263

References Cited
U.S. Patent Documents
4970600Nov., 1990Garnier et al.358/299.
5854751Dec., 1998Di Pietro et al.364/474.
6313434Nov., 2001Patterson et al.219/121.
Foreign Patent Documents
363068285Mar., 1988JP219/121.

Primary Examiner: Heinrich; Samuel M.
Attorney, Agent or Firm: Hormann; Karl
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