Apparatus and methods for loading a donor roll utilizing a slow speed trim roll

US7706728B2 · kind B2 · utility

Assignee

• Xerox Corporation · US

Inventors

• Palghat S. Ramesh · Pittsford, US
• John F. Knapp · Fairport, US
• Paul J. McConville · Webster, US
• Daniel M. Bray · Rochester, US
• Robert A. Pictor · Webster, US
• Todd K. Preston · Horseheads, US
• Lawrence Floyd, Jr. · Rochester, US
• James E. Williams · New Kensington, US
• Michael D. Thompson · Alpine, US

Key dates

• Filing date: Mar 15, 2007
• Grant date: Apr 27, 2010
• Expiry date: Aug 27, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/0648
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An apparatus for loading one or more donor rolls of a developer unit, comprising a developer housing having a reservoir for a developer material, a rotatable first donor roll that delivers the toner onto a moving photoconductive member, a trim roll that receives developer material from the reservoir and delivers the developer material to a first magnetic brush roller that delivers toner to the first donor roll, and a rotatable second magnetic brush roll that receives the developer material from the first magnetic brush roll and delivers the toner to the first donor roll. The apparatus may further comprise a rotatable second donor roll that receives the toner from the second magnetic brush roll and delivers the toner onto the photoconductive member, and a rotatable third magnetic brush roll that receives the developer material from the second magnetic brush roll and delivers the toner to the second donor roll. The apparatus may further comprise a trim blade for trimming excess developer material from the trim roll.