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US 2006/0140655 A1Published application
Image forming
AssigneeHewlett-Packard Development Company, L.P.
InventorDonald Fasen
Life of this patent
Estimating the term…
Abstract
An image forming method includes measuring an electrical potential on a surface of a developer roller and adjusting a time varying component of a voltage applied to the developer roller using a measurement of the electrical potential.
Claims64
An image forming method comprising:
- measuring an electrical potential on a surface of a developer roller;
- and
- adjusting a time varying component of a voltage applied to the developer roller using a measurement of the electrical potential.
An apparatus comprising:
- an alternating current (AC) power supply electrically connected with a direct current (DC) power supply for a developer roller;
- a probe configured for measuring an electrical potential at a surface of the developer roller;
- and
- a controller configured to control the AC power supply using the electrical potential measured.
1 more element
An apparatus comprising:
- a controller for a power supply to generate a voltage for a developer, the controller configured to modulate the voltage to reduce image banding caused by variations in a surface voltage of the developer.
An image banding compensation apparatus comprising:
- means for measuring an electrical potential at a surface of a developer;
- and
- means for adjusting an alternating current (AC) component of a voltage applied to the developer.
An image forming system comprising:
- a photo-conducting surface;
- a mechanism for selectively charging the photo-conducting surface;
- a developer including a surface for imparting charged particles to the photo-conducting surface;
- a mechanism for transferring the charged particles from the photo-conducting surface to an article of media;
- a mechanism for repositioning the photo-conducting surface in relation to the developer and the article of media;
- a mechanism for measuring an electrical potential at the surface of the developer;
- and
- a mechanism for adjusting an alternating current (AC) component of a developer voltage applied to the developer to correct for image banding caused by variations in the electrical potential.
5 more elements
Dependencies are inferred from the claim text.