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:
Mar. 31, 2009
Filed:
Mar. 30, 2005
Gregg A. Guarino, Rochester, NY (US);
Daniel W. Costanza, Webster, NY (US);
Martin E. Hoover, Rochester, NY (US);
James P. Calamita, Spencerport, NY (US);
Abu S. Islam, Rochester, NY (US);
Gregg A. Guarino, Rochester, NY (US);
Daniel W. Costanza, Webster, NY (US);
Martin E. Hoover, Rochester, NY (US);
James P. Calamita, Spencerport, NY (US);
Abu S. Islam, Rochester, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
A reflex printing device having multiple print heads mounted at different locations around the circumference of the drum at different 'angles' and an encoder disk mounted on the drum to allow for detection of the drum position as a function of time. An image defect due to a misalignment in the print process direction of the output from the multiple print heads is corrected by detection of an encoder position error function subtracted from itself shifted by the angle between the print heads.