Electrophotography – Image formation – Development
Patent
1998-07-13
1999-08-24
Royer, William
Electrophotography
Image formation
Development
399290, 399291, G03G 1508
Patent
active
059435399
ABSTRACT:
A developer unit for developing a latent image recorded on an image receiving member with marking particles, to form a developed image, including: a drive mechanism for moving the surface of the image receiving member at a predetermined process speed. A donor member is spaced from the image receiving member and adapted to transport marking particles to a development zone adjacent the image receiving member. A plurality of wires having a predefined tension are positioned in the development zone between the image receiving member and the donor member. A voltage supply to electrically bias the plurality of wires during a developing operation with an alternating current, to detach marking particles from the donor member, forming a cloud of marking particles in the development zone, and developing the latent image with marking particles from the cloud. A controller, responsive to the predefined wire tension, controls a modulation rate of the voltage supply to minimize harmonic resonant vibrations of the plurality of wires.
REFERENCES:
patent: 5144370 (1992-09-01), Bares
patent: 5404208 (1995-04-01), Edmunds
Fioravanti Alexander J.
Hirsch Mark J.
Bean II Lloyd F.
Moldafsky Greg
Royer William
Xerox Corporation
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