Residual toner collecting device for electrophotographic copier

Details Residual toner collecting device for electrophotographic copier Residual toner collecting device for electrophotographic copier

1984-06-20

1986-05-13

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118652, G03G 1508

Patent

active

045882851

ABSTRACT:
A residual toner collecting device efficiently collects residual toner remaining untransferred on a photoconductive element of an electrophotographic copier by cleaning the photoconductive element. A scavenger roller and a flat counterelectrode, which constitute the collecting device, are supplied with dc bias voltages which are different in polarity. The polarities of the dc bias voltages are switched each to the opposite polarity only for a predetermined part of the period between a start of movement of the photoconductive element and a stop of the movement. Further, an ac bias voltage is applied to at least one of the scavenger roller and the counterelectrode superposed on the dc bias voltage for the predetermined period. The predetermined period is a period during which cleaning the photoconductive element is not required.

REFERENCES:
patent: 3580673 (1971-05-01), Yang
patent: 3780391 (1973-12-01), Leenhouts
patent: 4123154 (1978-10-01), Fisher
patent: 4361922 (1982-12-01), Karal

Affiliated with

Also associated with

Rating

Residual toner collecting device for electrophotographic copier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Residual toner collecting device for electrophotographic copier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Residual toner collecting device for electrophotographic copier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1767006