The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2002
Filed:
Oct. 30, 2000
Bernd Lübcke, Molfsee, DE;
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
In a method for determining the axial position of an engraving element in an engraving machine used for engraving impression cylinders, the engraving machine has a fixed toothed comb in which a significant tooth flank of each tooth presents an axial distance which is a multiple of the tooth spacing of the toothed comb to a reference point. A photoelectric barrier which serves as axial reference mark is positioned on the engraving element and the toothed comb serves as black-out element for said photo-electric barrier. The engraving element is displaced by means of the photoelectric barrier from a momentary position to the nearest relevant tooth flank of the toothed comb. The approximate distance between the reference mark and the reference point is measured by means of a distance meter. Next, the approximate distance is compared with the multiple of the tooth spacing of the toothed comb and the exact distance between the reference mark of the engraving element and the reference point is determined from this comparison.