Method and device for the transport of toner material from a reservoir

US7333756B2 · kind B2 · utility

Assignee

• Oce Printing Systems GmbH · DE

Inventors

• Bernd Schoch · Gütersloh, DE
• Ursula Schafer · Penzberg, DE
• Karl Zappe · Schwindegg, DE

Key dates

• Filing date: May 23, 2003
• Grant date: Feb 19, 2008
• Expiry date: Feb 8, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G15/0865
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a method and system for transport of toner material, a reservoir arrangement containing the toner material is provided with a removal opening for removal of the toner material. The toner material is transported away from the removal opening with aid of a tube-shaped conduit, the toner material being transported in the tube-shaped conduit via an air current. A negative pressure is generated relative to environment pressure at the removal opening via the air current in the tube-shaped conduit. The reservoir arrangement is provided with at least one air-permeable and toner-tight region through which air is sucked into the reservoir arrangement upon application of the negative pressure. At least the air-permeable and toner-tight region is partitioned airtight from the environment, environment air being supplied to the partitioned region via a dosing nozzle.