Magnetic brush for charging and cleaning an imaging surface

Details Magnetic brush for charging and cleaning an imaging surface Magnetic brush for charging and cleaning an imaging surface

1992-11-16

1994-09-27

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355305, 361225, G03G 1502, G03G 2100

Patent

active

053511093

ABSTRACT:
Apparatus for charging an imaging surface of a photoreceptor. The apparatus forms a magnetic brush on a cylinder spaced apart from and facing the photoreceptor by a magnet disposed in the cylinder. The cylinder and the magnet are rotatable relative to each other so that the magnetic brush moves around the cylinder and comes in contact with the imaging surface of the photoreceptor. An electric bias source is provided to apply an electric bias voltage having a DC voltage component and an AC voltage component between the imaging surface of the photoreceptor and the cylinder, whereby the imaging surface is charged by the magnetic brush under the electric bias voltage.

REFERENCES:
patent: 4174903 (1979-11-01), Snelling
patent: 4469435 (1984-09-01), Nosaki et al.
patent: 4545669 (1985-10-01), Hays et al.
Journal of Applied Physics 63(11) Jun. 1, 1988 pp. 5589-5593 Tetsutani, et al.; Photoreceptor . . . Printing Technology.

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