Patent · US Expired

Isorunning-counterrunning developer station for an electrophotographic means

US4952979A · kind A · utility

4Cited by

10References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rainer Koefferlein · Munich, DE
Bernhard Schlageter · Ottobrunn, DE
Erich Baier · Schweitenkirchen, DE

Key dates

Filing date	Mar 22, 1989
Grant date	Aug 28, 1990
Priority date	—
Expiry date	Mar 22, 2009

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/0806
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An isorunning-counterrunning developer station comprises a plurality of isorunning developer drums moving isodirectionally with the charge image carrier and one counterruning developer drum. A developer mix is offered to the first isorunning developer drum via a paddle wheel proceeding from a supply chamber and is conducted from the first isorunning developer drum to the counterrunning developer drum via further isorunning developer drums. An exposure means composed of a transparent protective tube having a LED strip contained therein is provided above the developer drum, this exposure means being in turn followed by a carrier stripper drum.

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