Charging device for image forming apparatus

Details Charging device for image forming apparatus Charging device for image forming apparatus

1996-06-28

1998-07-28

Smith, Matthew S.

Electrophotography

Image formation

347141, 347147, 347148, 347149, G03G 1522, B41J 239

Patent

active

057873275

ABSTRACT:
This invention relates to the charging member portion of an image forming apparatus. A plurality of charging members are disclosed that maintain a uniform spacing between a charge-receiving member and the discharging portion of the charging members' electrodes despite surface irregularities and surface waviness on the charge-receiving member. One charging member is in the form of a flexible sheet provided with ventilation holes in a non-contacting portion thereof, permitting the air produced by the rotation of the charge-receiving member to escape through the holes to suppress the lifting of the charging member. Pressure fins can be added to the charging member on the downstream of the ventilation holes for further suppressing any lifting. Another charging member includes a semiconductive member or a electret member on at least the surface of the charging member on the side opposite the charge-receiving member. This permits the charging member to be electrostatically attracted to the charge-receiving member.

REFERENCES:
patent: 4233611 (1980-11-01), Nakano et al.
patent: 4356501 (1982-10-01), Ronen
patent: 4390887 (1983-06-01), Chynoweth et al.
patent: 4546364 (1985-10-01), Todoh
patent: 5278614 (1994-01-01), Ikegawa et al.
patent: 5321472 (1994-06-01), Adachi et al.
patent: 5323215 (1994-06-01), Ohtaka et al.
patent: 5353101 (1994-10-01), Adachi et al.
patent: 5384626 (1995-01-01), Kugoh et al.
patent: 5402213 (1995-03-01), Ikegawa et al.

Affiliated with

Also associated with

Rating

Charging device for image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Charging device for image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charging device for image forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-33987