Corona generating device
AssigneeXerox Corporation
InventorsRichard F. Bergen, Robert W. Gundlach
Life of this patent
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Abstract
A single piece, planar, integral corona generating device that applies a uniform charge to a charge retentive surface, including a dielectric layer, corona producing element formed on one side of the dielectric layer, reference electrode positioned on the other side of the dielectric layer, for controlling the charge level placed on the charge retentive surface by the corona producing element, for applying a low DC voltage to the reference electrode; and AC high voltage connected to the corona producing element for applying sufficient voltage to the corona producing elements so that ions are emitted from the reference electrode.
Claims23
A corona generating device, comprising:
- a dielectric layer;
- a corona producing element formed on a surface of said dielectric layer;
- a reference electrode, positioned on a surface of said dielectric layer, opposed from the surface having said corona producing element formed thereon for controlling charging by said corona producing element;
- a resistive layer interposed between said reference electrode and said dielectric layer;
- a voltage source coupled to said reference electrode;
- and
- an AC voltage source coupled to said corona producing element for energizing said reference electrode to emit ions therefrom.
A printing apparatus using a generating device, comprising:
- a dielectric layer;
- a corona producing element formed on a surface of said dielectric layer;
- a reference electrode, positioned on a surface of said dielectric layer, opposed from the surface having said corona producing element formed thereon for controlling charging by said corona producing element;
- a resistive layer interposed between said reference electrode and said dielectric layer;
- a voltage source coupled to said reference electrode;
- and
- an AC voltage source coupled to said corona producing element for energizing said reference electrode to emit ions therefrom.
Dependencies are inferred from the claim text.