Brush charging device for an image forming apparatus and a metho

Details Brush charging device for an image forming apparatus and a metho Brush charging device for an image forming apparatus and a metho

1994-03-11

1996-01-23

Brase, Sandra L.

Photocopying

Contact printing

Light boxes

361225, G03G 1502

Patent

active

054869072

ABSTRACT:
A brush charging device for an image forming apparatus, which charges a surface of an image carrier rotating in a predetermined direction, has a linear mount member, a base cloth mounted on the mount member and a brush member having fibers mounted on the base cloth at an angle .theta..sub.1. The angle .theta..sub.1 satisfies the following formula: cos.theta..sub.1 >c/(a+b) wherein a represents the radius of the image carrier, b represents the length of the brush fibers and c represents the distance between a point of intersection where a perpendicular line extending from the center of the image carrier to the base cloth intersects the base cloth and an edge portion of the base cloth located upstream going in the direction of the image carrier, and where the brush fibers contact the surface of the image carrier.

REFERENCES:
patent: 4005512 (1977-02-01), Kandel
patent: 4032196 (1977-06-01), Kandel
patent: 4106933 (1978-08-01), Taylor
patent: 4455078 (1984-06-01), Mukai et al.
patent: 4457615 (1984-06-01), Seanor
patent: 4706320 (1987-11-01), Swift
patent: 4835807 (1989-06-01), Swift
patent: 5287146 (1994-02-01), Uno et al.
patent: 5289234 (1994-02-01), Asano et al.
patent: 5294962 (1994-03-01), Sato et al.
Masatoshi Kimura, The Society of Electrophtography of Japan, pp. 10-19, Mar. 24, 1993.

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