Apparatus for ozoneless efficient charging of a photoreceptive d

Details Apparatus for ozoneless efficient charging of a photoreceptive d Apparatus for ozoneless efficient charging of a photoreceptive d

1989-06-02

1991-10-08

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

361225, G03G 1502

Patent

active

050558790

ABSTRACT:
An apparatus is provided that controls the distribution of charge on the surface of a photoreceptor drum in an electrophotographic printer while reducing the ozone output over that of a standard corotron. The apparatus includes an electrically conductive shaft coated with a semiconductive material disposed longitudinally parallel to the photoreceptor drum. The shaft and semiconductive material are biased into contact with the photoreceptor drum via spring mounted bearings. Thus, rotation of the photoreceptor drum drives the shaft and semiconductive material to rotate about its longitudinal axis.

REFERENCES:
patent: 3172024 (1965-02-01), Gundlach
patent: 4727453 (1988-02-01), Ewing
patent: 4761709 (1988-08-01), Ewing

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