Patent · US Expired

Apparatus for metered filling of toner from a reservoir into the developing station of a printer or copier device

US5139176A · kind A · utility

17Cited by

2References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Reindl · Besigheim, DE
Albert Eben · Oberpframmern, DE

Key dates

Filing date	Aug 30, 1990
Grant date	Aug 18, 1992
Priority date	—
Expiry date	Aug 30, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S222/01
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An apparatus for metered filling of toner from a reservoir into the developing station of an electrophotographic printer device comprises a metering drum in the exit region of the reservoir. A hollow conveyor helix is situated in a conveyor tube above the metering drum. The conveyor helix extends parallel along the metering drum into the toner reservoir. The conveyor helix and the metering drum are coupled in terms of drive corresponding to the metering power.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.