Oce Printing Systems Gmbh

Alexander Kreiter

Uwe Höllig

Heinrich Lay

Thomas Schwarz-Kock

Manfred Viechter

Stefan Scherdel

Karl Zappe

Vassilis Kremastiotis

In a method or control device for controlling an electrophotographic printer or copier that has at least two developer stations, during a print operation print data is used to determine which developer stations are needed for printing of the data. In the event it is established that a developer station was not need or will not be needed for a predetermined time span, the developer station is shifted into a standby state in which at least one part of mechanical actuators of the developer station is stopped.

Control device and method to control an electrophotographic printer or copier to prevent developer damage

In a method or system for controlling an electrophotographic printer or copier that has at least one developer station, a toner discharge from the developer station is detected during the print operation and a developer regeneration process is started when the detected toner discharge fulfills a predetermined first regeneration criterion. A charge image is generated on the photoconductor, the charge image is developed by the developer station, and the developed image is removed by a cleaning device without being transferred as printed onto a recording medium. New toner is introduced into the developer station. Also in accordance with the method or system for controlling an electrophotographic printer or copier that has at least two developer stations, during a print operation the print data is used to determine which developer stations are needed for printing of the data. In the event it is established that a developer station was not needed or will not be needed, the developer station is shifted into a standby state in which at least one part of mechanical actuators of the developer station is stopped.

Control device and method for controlling an electrophotographic printer or copier

In a method or device for simultaneous double-sided printing of a recording medium, the first toner image having toner charged with a first polarity is generated on a first transfer belt and a second toner image having toner also charged with the first polarity is generated on a second transfer belt. A charge shifting device is provided along with a recharging device. At least one of the charge shifting device and the recharging device has a corotron. With the charge shifting device, the charge of the first toner image is shifted to a second polarity opposite to the first polarity and with the recharging device the second toner image with the first polarity is recharged. The recording medium is passed between the first and the second transfer belts. An electrical field is generated at a transfer printing region via which the first toner image shifted to the second polarity and the recharged second toner image are separated from the respective first or second transfer belt and are transferred to a side of the recording medium facing the respective transfer belt.

Device and method for printing on both faces of a recording medium, comprising a charge shifting and recharging device

In a device and method for inking of a charge image with toner material in a printer or copier, the charge image corresponding to a print image to be generated is generated on a surface of a photoconductor element comprising a photoconductive layer. At least one layer made up of toner particles is applied on a region of a surface of an applicator element. The surface of the photoconductor element is contacted by at least one part of the toner particles applied on the surface of the applicator element.

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Wörth, Germany

Alexander Kreiter