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:
Nov. 25, 2014
Filed:
Mar. 26, 2013
Xerox Corporation, Norwalk, CT (US);
Yu Liu, Mississauga, CA;
Johann E. Junginger, Toronto, CA;
Gregory M. McGuire, Oakville, CA;
Vladislav Skorokhod, Mississauga, CA;
Sarah J. Vella, Milton, CA;
Xerox Corporation, Norwalk, CT (US);
Abstract
There is described an image forming apparatus including an imaging member having a charge retentive-surface for developing an electrostatic latent image thereon, a substrate and a photoconductive member disposed on the substrate. A bias charge roller for applying an electrostatic charge on the charge retentive surface to a predetermined electric potential is included in the image forming apparatus. The bias charge roller includes a first circumferential area in contact with the photoconductive member (CC), and a second circumferential area (CC) spaced a distance of from 1 μm to 1 mm from the photoconductive member. The image forming apparatus includes a power supply for supplying an oscillating voltage signal to the bias charge roller wherein the oscillating voltage signal has a frequency Am[f] and an amplitude Am[V]. The following relationship is met: (CC/CC)≦(Am[f]/Am[V])≦(CC/CC) by the image forming apparatus.