Electrophotographic printing apparatus with two charging bodies

Details Electrophotographic printing apparatus with two charging bodies Electrophotographic printing apparatus with two charging bodies

1998-09-10

1999-10-26

Grimley, Arthur T.

Electrophotography

Control of electrophotography process

Control of charging

361225, 399174, G03G 1502

Patent

active

059742771

ABSTRACT:
An electrophotographic printing apparatus has two charging bodies that are held at different potentials. The first charging body makes contact with the surface of a photosensitive drum; the second charging body makes contact with the first charging body. Toner particles that have acquired an electrostatic charge opposite to their normal charge are attracted from the drum surface to the first charging body. These toner particles are then attracted from the first charging body to the second charging body, whereby the first charging body is kept clean and able to charge the surface of the photosensitive drum to a uniform potential.

REFERENCES:
patent: 5124757 (1992-06-01), Ikegawa
patent: 5765076 (1998-06-01), Ogata et al.
patent: 5768653 (1998-06-01), Fare 399 50

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