Print blanket bias voltage
AssigneeHewlett-Packard Indigo B.V.
InventorsVitaly PORTNOY, Michel ASSENHEIMER, Amiran LAVON, Ido FINKELMAN
Life of this patent
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Abstract
In an example, a method of controlling voltage applied to a print blanket within a printing device includes printing a print job. During the printing, a null cycle trigger is received. In response to the trigger, a print blanket bias voltage is reduced from a print bias level to a null bias level.
Claims15
A method of controlling voltage applied to a print blanket within a printing device, comprising:
- printing a print job;
- during the printing, receiving a null cycle trigger;
- and,
- in response to the trigger, reducing a print blanket bias voltage from a print bias level to a null bias level.
A printing device comprising:
- a print blanket to receive an ink image from a photoreceptor;
- a bias unit to set a bias voltage of the print blanket;
- a voltage source to provide a print bias voltage and a null cycle bias voltage;
- and,
- a controller to receive a null cycle trigger, and in response to the trigger, to adjust a set-point of the bias unit from the print bias voltage to the null cycle voltage.
A non-transitory machine-readable storage medium storing instructions that when executed by a processor of a printing device, cause the printing device to:
- during a print cycle of a printing process, detect an interrupt from a printing subsystem;
- in response to detecting the interrupt,
- change a print blanket bias voltage from a print bias level to a null bias level;
- and
- insert a first null cycle into the printing process following the print cycle;
- insert an additional null cycle following the first null cycle for each null cycle in which the detection of the interrupt persists;
- and
- maintain the print blanket bias voltage at the null bias level during each null cycle.
Dependencies are inferred from the claim text.