Charging device and image forming apparatus

Details Charging device and image forming apparatus Charging device and image forming apparatus

1995-11-07

1997-07-29

Grimley, Arthur T.

Electrophotography

Image formation

Charging

361221, 399150, G03G 1502, G03G 1524

Patent

active

056526490

ABSTRACT:
In electrophotographic image forming, there are provided a charging device and an image forming apparatus provided with the charging device for forming an image including no or less image noise by sufficiently suppressing generation of image memory due to untransferred residual developer. The charging device has, for example, a charging brush formed of a roller and a strip-like fiber member having a plurality of piles wound therearound. The brush satisfies a condition of 0.7s<d<1.5s where d(mm) is a wound margin of the strip-like fiber member, and s(mm) is an average distance between the piles in a width direction of the fiber strip member.

REFERENCES:
patent: 4706320 (1987-11-01), Swift
patent: 5148219 (1992-09-01), Kohyama
patent: 5196892 (1993-03-01), Mitsuaki
patent: 5221946 (1993-06-01), Kohyama
patent: 5245386 (1993-09-01), Asano et al.
patent: 5398102 (1995-03-01), Wada et al.
patent: 5426488 (1995-06-01), Hayakawa et al.
patent: 5455661 (1995-10-01), Yoshida et al.

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