Charge particle removal device

Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer

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Details

15 15R, 1525651, G03G 2100

Patent

active

045332363

ABSTRACT:
Magnetic brush cleaner for removing residual charged particles such as toner from a charge-retentive surface such as a photoreceptor. The brush cleaner has a bias voltage applied thereto for establishing an electrostatic field for aiding in toner removal. A control is provided for varying the bias voltage applied to the brush cleaner in accordance with variations in photoreceptor potential to thereby maintain the cleaning potential (i.e. the difference between the applied bias voltage and the photoreceptor potential) invariant.

REFERENCES:
patent: 3572923 (1971-03-01), Fisher et al.
patent: 3580673 (1971-05-01), Yang
patent: 3722018 (1973-03-01), Fisher
patent: 3944354 (1976-03-01), Benwood et al.
patent: 3994725 (1976-11-01), Volkers
patent: 4252433 (1981-02-01), Sullivan
patent: 4265990 (1981-05-01), Stolka

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