Electrode wire grid for developer unit

Details Electrode wire grid for developer unit Electrode wire grid for developer unit

1993-09-17

1995-06-06

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118654, 355262, G03G 1508

Patent

active

054227097

ABSTRACT:
An apparatus in which a donor roll advances toner to an electrostatic latent image recorded on a photoconductive member. A plurality of electrode wires are positioned in the space between the donor roll and the photoconductive member. The electrode wires extend in a transverse direction relative to the longitudinal axis of the donor roll. The electrode wires are electrically biased to detach the toner from the donor roll so as to form a toner cloud in the space between the electrode wires and photoconductive members. Detached toner from the toner cloud develops the latent image. Electrode wires contact a portion of the surface of the donor roll. As the donor roll rotates, friction between the electrode wires and donor roll causes trapped debris to move away from the toner powder cloud region so as to minimize contamination produced streaks on the developed image.

REFERENCES:
patent: 3147147 (1964-09-01), Carlson
patent: 3998185 (1976-12-01), Weiler
patent: 4697914 (1987-10-01), Hauser
patent: 4868600 (1989-09-01), Hays et al.
patent: 4984019 (1991-01-01), Folkins
patent: 5196890 (1993-03-01), Nakayama et al.
patent: 5289240 (1994-02-01), Wayman

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