Electrophotography – Control of electrophotography process – Of plural processes
Patent
1998-06-02
1999-10-19
Brase, Sandra
Electrophotography
Control of electrophotography process
Of plural processes
399 50, 399 55, 399149, G03G 1500
Patent
active
059702796
ABSTRACT:
An image forming apparatus wherein a developer remaining on a photosensitive member after an image transfer process is removed by developing means, the apparatus includes an electrophotographic photosensitive member; a contact charging means including an electrode contacted to the photosensitive member to electrically charge the photosensitive member, the contact charging means being supplied with a bias voltage form a charging bias voltage source; exposure means for exposing the photosensitive member to form an electrostatic latent image thereon after the photosensitive member is electrically charged by the charging means; developing means for supplying the developer from a developer carrying member to a latent image portion of the photosensitive member to develop the photosensitive member and simultaneously removing the developer remaining on the photosensitive member after the transfer process and conveyed to a downstream of the contact charging means on the photosensitive member, to the developer carrying member by a potential difference between the developer carrying member supplied with a developing bias and a latent image of the photosensitive member; and control means for controlling the charging bias and a developing bias, during a preparatory pre-rotation process of the photosensitive member for preparation for an image forming operation, to maintain a potential difference between the photosensitive member and the developer carrying member at a level lower than that during normal image forming operation, by surface potentials of the developer carrying member supplied with the developing bias and of the photosensitive member charged by the charging means.
REFERENCES:
patent: 4974026 (1990-11-01), Maruyama
patent: 5010370 (1991-04-01), Araya et al.
patent: 5144368 (1992-09-01), Ohzeki et al.
patent: 5151736 (1992-09-01), Ohzeki et al.
patent: 5519472 (1996-05-01), Ojima et al.
patent: 5541717 (1996-07-01), Saito et al.
patent: 5548381 (1996-08-01), Saito et al.
patent: 5570166 (1996-10-01), Ohzeki et al.
patent: 5587773 (1996-12-01), Yano et al.
patent: 5692232 (1997-11-01), Okano et al.
Ohzeki Yukihiro
Sakaizawa Katsuhiro
Brase Sandra
Canon Kabushiki Kaisha
LandOfFree
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 Image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2067852