Control for a Non-Contact Charging Roller
AssigneeHewlett-Packard Development Company, L.P.
InventorsOMER GILA, SEONGSIK CHANG, MICHAEL H LEE, THOMASS ANTHONY, WILLIAM D HOLLAND
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Abstract
A charging assembly controls a selectable non-contact distance between a charge roller and an imaging surface.
Claims15
A computer software product comprising, a non-transitory tangible medium readable by a processor, the medium having stored thereon a set of instructions for operating an electrophotographic printing system, the system including a charge roller disposed to charge an imaging surface on which a latent image for printing is formed, the instructions comprising a set of instructions which, when loaded into a memory and executed by the processor, causes closed-bop control of a selectable non-contact distance between the charge roller and the Imaging surface.
A charging assembly comprising:
- a charging roller including an outer inorganic resistive coating and positionable into charge-transferring relation to an imaging surface via a selectable gap between the charging roller and the imaging surface;
- and
- a control module to automatically determine the selectable gap between the charging roller and an imaging surface based on at least a streamer amplitude parameter associated with at least the charging roller.
A method of manufacturing a printing system, comprising:
- arranging a charging device to be selectively movable relative to an imaging surface;
- and
- arranging a control module to be in charge-monitoring relation to the charging device and to the imaging surface to determine a selectable gap between the charging device and the imaging surface, wherein the determination is based on measurable charge characteristics at at least the imaging surface.
Dependencies are inferred from the claim text.