Image forming apparatus and method using charge control means

Details Image forming apparatus and method using charge control means Image forming apparatus and method using charge control means

1998-03-17

1999-06-08

Lee, S.

Electrophotography

Image formation

Charging

399128, 430902, G03G 1502, G03G 2100

Patent

active

059110970

ABSTRACT:
Applied voltage to the contact charging sheet 71 has been controlled in the following various ways: a) the voltage at the photosensitive layer 10 at a point of time whereat it has passed the contact charging sheet 71 is caused to interlock with grid voltage so as not to exceed predetermined voltage to be electrified by the Scorotron charger 2; b) the applied voltage is caused to interlock with the output from the transfer unit 5 so that there is no portion which reaches the Scorotron charger 2 while the potential polarity has been reversed at the transfer unit 5; c) reduction in the film thickness of the photosensitive layer 10 is corrected in consideration of the cumulative number of sheets for image formation; d) the size of printing sheet is added; e) at the time of termination, a portion of the photosensitive layer 10, into which current has flowed at the transfer unit 5, is caused to stop always after passing the contact charging sheet 71; f) the contact charging sheet 71 is cleaned by means of AC component; and g) the applied voltage is switched while formation of an electrostatic latent image and the like are not performed. Thereby, the surface potential at the photosensitive drum 1 is prevented from becoming ununiform.

REFERENCES:
patent: 4669864 (1987-06-01), Shoji et al.
patent: 4769676 (1988-09-01), Mukai et al.
patent: 5161084 (1992-11-01), Morihara et al.
patent: 5164779 (1992-11-01), Araya et al.
patent: 5192974 (1993-03-01), Ikegawa et al.
patent: 5557375 (1996-09-01), Nagayasu et al.
patent: 5689777 (1997-11-01), Yamamoto et al.

Affiliated with

Also associated with

Rating

Image forming apparatus and method using charge control means 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 and method using charge control means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus and method using charge control means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1688538