Image forming apparatus having contact charger

Details Image forming apparatus having contact charger Image forming apparatus having contact charger

1995-11-09

1997-11-18

Lee, Shuk

Electrophotography

Image formation

Charging

347140, 399 50, 399175, 361221, G03G 1502

Patent

active

056897774

ABSTRACT:
An image forming apparatus includes a charging rotary brush in contact with a photosensitive member, a laser beam irradiator to form an electrostatic latent image, a developing unit for developing the latent image into a visible image and collecting residual developer remaining on the surface of the photosensitive member after the visual image is transferred to a transfer material, and a power source unit for applying to the charging rotary brush an oscillating voltage fulfilling the requirement of:

REFERENCES:
patent: 5148219 (1992-09-01), Kohyama
patent: 5221946 (1993-06-01), Kohyama
patent: 5305177 (1994-04-01), Aoki et al.
patent: 5426488 (1995-06-01), Hayakawa et al.
patent: 5440374 (1995-08-01), Kisu
patent: 5444519 (1995-08-01), Motoyama et al.
patent: 5512982 (1996-04-01), Takahashi et al.
patent: 5561502 (1996-10-01), Hirai et al.
patent: 5606401 (1997-02-01), Yano

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