Electrographic printing or copying device, and method for operating one such printing or copying device
AssigneeOce Printing Systems GmbH
InventorJoachim Samweber
Life of this patent
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Abstract
In a method or device for operation of an electrographic printing or copying device, at least toner particles are accumulated on a surface of a first carrier element. After a transfer of toner particles onto a further carrier element, toner particles still remaining on the first carrier element are removed by generating a traveling field between the first carrier element and the cleaning device which transports the toner particles.
Claims19
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.
A method for operation of an electrographic printing or copying device, comprising the steps of:
- accumulating at least toner particles on a surface of a first carrier element;
- after transfer of toner particles onto a further carrier element removing toner particles still remaining on the first carrier element by generating a field between the first carrier element and the cleaning device;
- and
- generating said field as a traveling field on a surface of the cleaning device via activation of a field generating unit of the cleaning device, said activation transporting the toner particles along by the traveling field.
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 from the first carrier element which removes the toner particles still remaining on the first carrier element after transfer of the toner particles onto the further carrier element;
- 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
- said field comprising a traveling field via which the attracted toner particles are transported away along a progression direction of the traveling field.
A method for operation of an electrographic printing or copying device, comprising the steps of:
- accumulating at least toner particles on a surface of a first carrier element;
- and
- after transfer of toner particles onto a further carrier element removing toner particles still remaining on the first carrier element by generating a traveling field between the first carrier element and the cleaning device which transports the toner particles.
Dependencies are inferred from the claim text.