Brush charger for static-charging a photosensitive member...

Details Brush charger for static-charging a photosensitive member... Brush charger for static-charging a photosensitive member...

2005-06-21

2005-06-21

Lee, Susan (Department: 2852)

Electrophotography

Image formation

Charging

C361S221000

Reexamination Certificate

active

06909868

ABSTRACT:
A brush charger for static-charging a photosensitive drum by a contact method has a charging brush roller. The charging brush roller has a brush of a large number of conductive fibers, and the brush is wound around a conductive support spirally. The conductive fibers are 1.5 to 4 deniers in thickness D, are 2 mm in length L and are planted at a density not less than 150,000 filaments/inch2, and the thickness D and the length L of the conductive fibers meet the condition, D≧0.71L−1.61.

REFERENCES:
patent: 5479244 (1995-12-01), Kashihara et al.
patent: 5508788 (1996-04-01), Watanabe et al.
patent: 5835821 (1998-11-01), Suzuki et al.
patent: 2003/0123909 (2003-07-01), Akashi et al.
patent: 2003/0162111 (2003-08-01), Otani et al.
patent: 2001-242688 (2001-09-01), None

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