Maintenance program for liquid electro-photographic printing processes
AssigneeHP Indigo B.V.
InventorsEran Shiran, Dima Libster, Ido Finkelman, Raia Slivniak
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Abstract
A liquid electro-photographic, LEP, printing system, comprising a photo imaging plate, PIP, an intermediate transfer member, ITM, and a control unit. The control unit causes the system to initiate a maintenance program, wherein the maintenance program comprises driving the PIP and the ITM while disabling particle transfer to the PIP and applying a voltage difference between the PIP and surface portions of the ITM.
Claims13
A liquid electro-photographic, LEP, printing system, comprising:
- a photo imaging plate, PIP;
- an intermediate transfer member, ITM;
- and
- a control unit, the control unit to cause the system to:
- initiate a maintenance program, wherein the maintenance program comprises driving the PIP and the ITM while disabling particle transfer to the PIP and while applying a voltage difference between the PIP and surface portions of the ITM which is larger than a nominal operation voltage difference.
A machine-readable medium, comprising machine-readable instructions which when carried out by a control unit of a liquid electro-photographic, LEP, printing system, cause the system to:
- halt a selective discharge of a photo imaging plate, PIP, of the system;
- halt a transfer of charged particles onto the PIP;
- and
- drive the PIP and an intermediate transfer member, ITM, of the system while:
- applying a voltage difference between the PIP and surface portions of the ITM which is larger than a nominal operation voltage difference, and
- halting the selective discharge and the transfer of charged particles.
A method, comprising:
- transferring, during a production mode of operation of a liquid electro-photographic, LEP, printing system, layers of charged particles form a photo imaging plate, PIP, of the system to an intermediate transfer member, ITM, of the system;
- and
- applying, during a maintenance mode of operation of the system involving a movement of the PIP and the ITM, a voltage difference between the PIP and surface portions of the ITM which is larger than a nominal operation voltage difference, and disabling transfer of charged particles to the PIP.
Dependencies are inferred from the claim text.