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:
Feb. 14, 2012
Filed:
Jun. 24, 2009
Michael F. Zona, Holley, NY (US);
Richard L. Howe, Webster, NY (US);
Michael F. Zona, Holley, NY (US);
Richard L. Howe, Webster, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
An apparatus () and method () that senses photoreceptor failure in a xerographic printing apparatus is disclosed. The xerographic printing apparatus can include a rotatable photoreceptor () having a photoreceptor surface (), a cleaning device () for removing marking material from the photoreceptor, and a printing apparatus controller () that controls operations of the xerographic printing apparatus. The method can include charging () the photoreceptor surface to a fixed voltage. The method can include discharging () at least a portion of the charged photoreceptor surface to an exposed voltage. The method can include developing () the discharged portion of the photoreceptor surface by providing a cleaning field between the charged photoreceptor surface fixed voltage and a developing bias voltage. The method can include reducing () the cleaning field. The method can include generating () a developed image on the photoreceptor using the reduced cleaning field. The method can include scanning () the developed image after reducing the cleaning field, where the developed image can be scanned using a sensor to generate a scanned image.