Electroded donor roll

Details Electroded donor roll Electroded donor roll

1995-08-28

1997-03-18

Royer, William J.

Electrophotography

Image formation

Development

G03G 1508

Patent

active

056131780

ABSTRACT:
An apparatus in which a rotabably mounted donor roll advances toner to an electrostatic latent image recorded on a photoconductive surface. The donor roll has a plurality of conductive electrodes mounted thereon which rotate in unison therewith. A resistive disk is connected electrically to each of the conductive electrodes. The resistive disk also rotates in unison with the donor roll. An electrically conductive brush is in sliding contact with the resistive member. A voltage source, mounted stationarily, is coupled electrically to the resistive member. The voltage applied to each conductive electrode varies as a function of the distance between the voltage source and that conductive electrode.

REFERENCES:
patent: 5172170 (1992-12-01), Hays et al.
patent: 5289240 (1994-02-01), Wayman
patent: 5390011 (1995-02-01), Theodoulou
patent: 5394225 (1995-02-01), Prker
patent: 5413807 (1995-05-01), Duggan et al.
patent: 5453768 (1995-09-01), Schmidlin
patent: 5473414 (1995-12-01), Thompson
Xerox U.S. Serial No. 08/376,585, filed Jan. 23, 1995, Applicant: Rodriguez et al. (Not attached).

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