Electrophotographic apparatus having a device for removing paper

Electrophotography – Internal machine environment – Particle or contaminant control

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Details

152565, 1525652, 399149, 399150, 399343, G03G 1524, G03G 2100

Patent

active

058191380

ABSTRACT:
An electrophotographic apparatus including an electrically conductive brush roller for recovering and discharging a residual toner and removing paper dust which is located in contact with a photoreceptor drum. A positive voltage is applied to a transfer roller, whereupon the toner is charged positively. As a recording region on the photoreceptor drum with an electrostatic latent image formed thereon passes the brush roller, a voltage of a potential lower than the potential of the recording region is applied to the brush roller, and the brush roller recovers the residual toner. As a non-recording region on the photoreceptor drum without the latent image thereon passes the brush roller, on the other hand, a voltage of a potential higher than the potential of the non-recording region is applied to the brush roller, and the recovered toner is discharged onto the non-recording region. The discharged toner is returned to a developing roller after a charging process.

REFERENCES:
patent: 5124757 (1992-06-01), Ikegawa
patent: 5294964 (1994-03-01), Oshiumi
patent: 5321471 (1994-06-01), Ito et al.
patent: 5436700 (1995-07-01), Kikuchi et al.
patent: 5438397 (1995-08-01), Okano et al.
patent: 5587774 (1996-12-01), Nagahara et al.

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