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:
Nov. 12, 2002
Filed:
May. 10, 2000
Mark Edwin Kirtley Lund, Lexington, KY (US);
Daniel Eugene Pawley, Louisville, KY (US);
Earl Dawson Ward, II, Richmond, KY (US);
Lexmark International, Inc, Lexington, KY (US);
Abstract
A method of determining a position of a laser beam in an electrophotographic machine includes providing a sensor device having a laser beam receiving surface with a first edge and a second edge. The second edge is nonparallel to the first edge. The laser beam is scanned across the receiving surface in a scan direction perpendicular to a process direction. The laser beam intersects each of the first edge and the second edge of the receiving surface during the scanning. A time period between when the laser beam intersects the first edge and when the laser beam intersects the second edge of the receiving surface is measured. A process position of the laser beam along the process direction is calculated based upon the measured time period.