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:
Jul. 19, 2005
Filed:
Mar. 17, 2004
Roger S. Cannon, Lexington, KY (US);
Timothy A. Green, Lexington, KY (US);
Martin C. Klement, Lexington, KY (US);
Daniel E. Pawley, Louisville, KY (US);
Wilson M. Routt, Jr., Lexington, KY (US);
Roger S. Cannon, Lexington, KY (US);
Timothy A. Green, Lexington, KY (US);
Martin C. Klement, Lexington, KY (US);
Daniel E. Pawley, Louisville, KY (US);
Wilson M. Routt, Jr., Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
An image scanning apparatus and a torsion oscillator are capable of operating across a dynamic range of possible operating frequencies. The image scanning apparatus uses a light source to produce a light beam, and the oscillator scans the light beam through a scanning pattern. The oscillator includes a plate member having a non-rectangular shape. At least one magnet is disposed on the plate. A surface of the plate member includes a reflective surface for reflecting a light beam. A frame is disposed in a spaced apart relation to a lower surface of the plate member. The frame includes at least one coil configured to induce an electromagnetic force on the at least one magnet to thereby oscillate the reflective surface to a rotational angle of oscillation at an oscillation frequency. The system also includes an imaging surface disposed in the path of the scanning pattern so that the light beam scans across the imaging surface, and a mechanical drive to move the imaging surface. A control system controls electric current provided to the at least one coil to achieve the oscillation.