Method and device for cleaning support elements in printers or copiers by means of magnetic fields

US7340203B2 · kind B2 · utility

Assignee

• Oce Printing Systems GmbH · DE

Inventors

• Uwe Höllig · Birkenfeld, DE
• Peter Schulmeister · Brackenheim, DE
• Ralf Selinger · Birkenfeld, DE
• Volkhard Maess · Erding, DE

Key dates

• Filing date: Oct 25, 2002
• Grant date: Mar 4, 2008
• Expiry date: Jul 5, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G21/0047
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to a method and devices for cleaning the surfaces of applicator rollers, photoconductor drums, transfer belts, and photoconductor belts using magnetic roller systems. The invention also relates to methods and systems for cleaning magnetic rollers to whose surfaces toner particles adhere. In a first embodiment, a squeegee/scraper is disposed at a distance to the surface of the roller. In another embodiment, a magnetic stator configuration with two spaced apart magnetic elements is used whose poles have substantially the same active direction.