Device and method for dosing toner material in an electrophotographic printer or copier

US7561832B2 · kind B2 · utility

Assignee

• Oce Printing Systems GmbH · DE

Inventors

• Bernhard Schlageter · Ottobrunn, DE
• Klaus Strol · Gelting, DE
• Reinhold Schmidl · Fürstenfeldbruck, DE
• Josef Ranner · Ebersberg, DE
• Bernd Schoch · Gütersloh, DE
• Joseph Knott · Tutzing, DE

Key dates

• Filing date: May 21, 2003
• Grant date: Jul 14, 2009
• Expiry date: Oct 7, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/0827
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a method and device to separate toner material and air from a toner material-air mixture, and first operating phase at toner material-air mixture is supplied to a filter so that air flows through the filter in a first direction. In a second operating phase, the flow of air through the filter in a first direction is interrupted such that toner material deposited on the filter is loosened. In a second operating phase, air flows through the filter in a direction approximately opposite to the first direction. Also in a method device for dosing toner material in an electrophotographic printer or copier, toner material is introduced into at least one bucket chamber rotatably arranged in an opening at a bottom of a toner reservoir. The bucket chamber has a paddle wheel which seals the opening of the toner reservoir. As the paddlewheel rotates, toner material in the bucket chamber is conveyed into a region. The toner material conveyed from the paddlewheel is further conveyed with a screw conveyor. Also a toner reservoir is provided having a toner removal opening shaped to accommodate at least a portion of a paddlewheel.