Biased toner collection roll for an ultrasonically assisted clea

Details Biased toner collection roll for an ultrasonically assisted clea Biased toner collection roll for an ultrasonically assisted clea

1996-07-03

1997-08-19

Pendegrass, Joan H.

Electrophotography

Supplemental electrophotographic process

Exposure or charging

399349, 430125, G03G 2100

Patent

active

056598491

ABSTRACT:
A method and apparatus for eliminating the accumulation of triboelectric negative toner that occurs between the cleaning edge of the cleaning blade and the photoreceptor surface. After image transfer, the residual toner particles on the photoreceptor surface are then charged to a uniform polarity using either a preclean corotron or a biased conductive blade. A UCA is used to dislodge the residual toner particles away from the photoreceptor surface. The polarity of the particles is opposite to that of the collection roll positioned to attract the toner particles levitated by the UCA onto the collection roll.

REFERENCES:
patent: 4007982 (1977-02-01), Stange
patent: 4111546 (1978-09-01), Maret
patent: 4121947 (1978-10-01), Hemphill
patent: 4833503 (1989-05-01), Snelling
patent: 5030999 (1991-07-01), Lindblad et al.
patent: 5500969 (1996-03-01), Bonislawski, Jr.
patent: 5576822 (1996-11-01), Lindblad et al.

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