Lexmark International, Inc.

William P Corbett

Thomas Austin Fields

Christopher Dane Jones

Cyrus Bradford Clarke

Allen P Johnson

Christopoher D Jones

Laser beam scan line nonlinearity is compensated for by providing algorithms for generating linearity profiles which are used by a corresponding registration system in an electrophotographic device to determine the placement of Pels across a scan line.

Systems for performing laser beam linearity correction and algorithms and methods for generating linearity correction tables from data stored in an optical scanner

Systems and methods are provided for electronically adjusting an image to compensate for laser beam process direction position errors in an electrophotographic device. Initially, a bow profile is defined that characterizes the process direction position errors of a laser beam across a scan line. The device subsequently reads an image to be printed from a first memory location, performs pixel shifts on select columns thereof based upon the bow profile, and temporarily stores the adjusted image data to a second location of memory. The adjusted image data is then communicated to a printhead of the device.

Growing community of inventors

Lexington, KY, United States of America

William P Corbett