Cleaning unit for removing residual toner on photoreceptor drum

Details Cleaning unit for removing residual toner on photoreceptor drum Cleaning unit for removing residual toner on photoreceptor drum

1992-04-28

1993-08-03

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355302, 355303, G03G 2100

Patent

active

052333981

ABSTRACT:
A cleaning unit includes a plurality of rotatable fur brushes which are arranged so as to adjoin in a downstream direction of a transferring process on a surface of a photoreceptor drum and whose tips are in contact with the surface for removing residual toner on the surface, recovering rollers arranged so as to be in contact with the tip of each of the fur brushes for removing toner adhering to the fur brushes, and a charger for charging the fur brushes and the recovering rollers, wherein the fur brush arranged at the downmost stream side rotates at a lower speed compared to another fur brush arranged in the upstream side thereof, wherein a discharger is further provided for decreasing the charge of the residual toner, and wherein the charger charges the downmost stream side fur brush reversely to the uppermost stream side fur brush.

REFERENCES:
patent: 4819026 (1989-04-01), Lange et al.
patent: 4870466 (1989-09-01), Iida
patent: 4878093 (1989-10-01), Edmunds
patent: 4999679 (1991-03-01), Corbin et al.
patent: 5031000 (1991-07-01), Pozniakas et al.

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