Mag brush cleaner erase light

Details Mag brush cleaner erase light Mag brush cleaner erase light

1987-10-16

1989-02-14

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3R, 355 3DD, G03G 1508

Patent

active

048049999

ABSTRACT:
A cleaning system in which the cleaning nip region is kept dark and light is projected between the preclean corotron and the nip of the magnetic cleaning brush and also light is projected at the exit of the cleaning nip region prior to the charge corotron. Cleaning occurs at the entrance of the nip, and as the photoreceptor moves through the cleaner nip, it is charged in the direction that the cleaning roll is biased. This reduces the electrostatic field at the exit of the cleaning nip and, in turn, minimizes the redeposition of wrong sign toner onto the photoreceptor as well as reducing field driven bead loss.

REFERENCES:
patent: 3828921 (1974-10-01), Sargis
patent: 4201465 (1980-05-01), Oyama et al.
patent: 4205912 (1980-06-01), Yamaguchi et al.
patent: 4623243 (1986-11-01), Iijima et al.

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