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:
May. 07, 1996
Filed:
Aug. 29, 1994
Ssujan Hou, Webster, NY (US);
Daniel W Costanza, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An apparatus and method for controlling lateral movement of a belt supported on two or more rollers in an electrophotographic printing machine. The belt is rotated for several revolutions and the actual profile of the belt edge is sensed and stored. A steering roll is then tilted at an angle large enough to overcome any steering system backlash and the belt drift rate is measured. Incremental steering adjustments are then made in the opposite direction until the belt drift rate reverses direction. The steering system backlash is then determined as a function of the incremental angle (which is a known number of steering motor steps) and the number of corrective steering changes made. The backlash for the system in the opposite direction is then determined in the same manner. Steering corrections to the belt are then made with compensation for backlash so that the steering system is more responsive.