Carrier particle scavenging device

Details Carrier particle scavenging device Carrier particle scavenging device

1991-10-28

1993-02-02

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355269, 355296, G03G 2100

Patent

active

051841940

ABSTRACT:
A scavenging device for recapturing charged carrier particles from a moving image-bearing surface includes a first pickup member and a second pickup member. The first pickup member is mounted adjacent toner and carrier particles on the image-bearing member, and is biased electrically to a polarity relatively opposite to the polarity of the charged carrier particles. The second pickup member is also mounted adjacent toner and carrier particles on the image-bearing member to be effective at a point downstream of the first pickup member. The second member, as such, is electrically grounded for capturing from the image-bearing member wrong sign carrier particles.

REFERENCES:
patent: 4349270 (1982-09-01), Wada et al.
patent: 4552451 (1985-11-01), Yamazaki et al.
patent: 4647186 (1987-03-01), Armstrong et al.
patent: 4697914 (1987-10-01), Hauser
patent: 4994863 (1991-02-01), Reynolds
patent: 5047807 (1991-09-01), Kalyandurg
Folkins et al., Xerox Disclosure Journal, vol. 13, No. 6, Nov./Dec. 1988.

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