Hybrid scavengeless development using direct current voltage shift to remove wire history

US6668146B2 · kind B2 · utility

Assignee

• Xerox Corporation · US

Inventors

• Jeffrey C. Folkins · Rochester, US
• Rasin Moser · East Rochester, US
• William H. Wayman · Macedon, US
• Larry G. Hogestyn · Ontario, US
• Robert E. Grace · Fairport, US

Key dates

• Filing date: Mar 26, 2002
• Grant date: Dec 23, 2003
• Expiry date: Mar 26, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/0643
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An image transfer apparatus with the capacity to reduce or clean wire history. The cleaning is performed by supplying a voltage burst to shift, relative to nominal, the D.C. component of the electrode bias relative to the electrical bias of the donor member during the movement of the inter-imaging region through the development zone. A voltage shift may also be applied to electrically bias the donor member relative to the photoreceptor belt during the movement of the inter-imaging region through the development zone. These voltage shifts may be conducted individually or simultaneously.