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:
Dec. 11, 2001
Filed:
Oct. 30, 1998
Richard H. Tuhro, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A method of and an apparatus for reducing or eliminating scan line magnification errors in digital copiers that use an input scanner and a raster output scanner. The input scanner integration period, and thus the input scan line rate, is synchronized with the rotation of the raster output scanner, and thus the output scan line rate. Synchronization might be achieved using either a one to one input scan line to output scan line ratio, or by scanning multiple output scan lines for each input scan line. Beneficially, the principles of the present invention are implemented by synchronizing the input scan rate of an input scanner with the rotation of a polygon of a raster output scanner using a start of scan detector.