Uniform charge device with reduced edge effects

US7187534B2 · kind B2 · utility

Assignee

• Xerox Corporation · US

Inventors

• Satchidanand Mishra · Webster, US
• Edward A. Domm · Hilton, US
• Dennis J. Prosser · Walworth, US
• Steven P. Nonkes · Webster, US
• Zoran D. Popovic · Täby, SE
• Surendar Jevadev · Rochester, US

Key dates

• Filing date: Nov 25, 2003
• Grant date: Mar 6, 2007
• Expiry date: Aug 25, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/028
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

By varying corona producing element height/projection, a more uniform charge potential is achieved. Elements, such as pins or teeth, are shorter at the edges of an element array and grow longer as one moves toward the center of the array. Such variation in height/projection overcomes shielding from adjacent teeth, as well as other effects, to yield the more uniform charging potential.