US 7,583,918 B2
Electrographic printing or copying device, and method for operating one such printing or copying device
Joachim Samweber, Eichenau (Germany)
Assigned to Oce Printing Systems GmbH, Poing (Germany)
Appl. No. 11/718,463
PCT Filed Dec. 07, 2005, PCT No. PCT/EP2005/056562
§ 371(c)(1), (2), (4) Date May 02, 2007,
PCT Pub. No. WO2006/061401, PCT Pub. Date Jun. 15, 2006.
Claims priority of application No. 10 2004 059 532 (DE), filed on Dec. 09, 2004.
Prior Publication US 2008/0013990 A1, Jan. 17, 2008
Int. Cl. G03G 15/09 (2006.01)
U.S. Cl. 399—273 19 Claims
OG exemplary drawing
 
1. An electrographic printing or copying device, comprising:
a first carrier element on whose surface toner particles are accumulated in a region of an accumulation point and from whose surface at least a portion of the toner particles in a region of a transfer point are transferred onto a further carrier element;
a cleaning device arranged in a region between the transfer point and the accumulation point and at a distance from the first carrier element in order to remove the toner particles still remaining on the first carrier element after transfer of the toner particles onto the further carrier element;
one part of the cleaning device is arranged near the first carrier element and the other part of the cleaning device is spatially designed such that it leads away from the first carrier element such that the removed toner particles are transported away from the first carrier element by the cleaning device;
a field between the cleaning device and the first carrier element which attracts the toner particles to be removed from said first carrier element; and
the cleaning device comprising a field-generating unit via which said field is generated as a traveling field via which the attracted toner particles are transported away along a progression direction of the traveling field.