Photocopying – Contact printing – Light boxes
Patent
1988-10-27
1990-04-10
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355208, 355219, 355265, G03G 2100, G03G 1502, G03G 1506
Patent
active
049164910
ABSTRACT:
In a relatively simple copier lacking a discharging unit which erases those portions of a photoconductive element which precede and follow an image, a control device reduces the amount of toner consumed and the amount of toner collected while preventing toner from being scattered around. For a surface portion of the photoconductive element which is associated with a trailing edge portion of a paper to which the image is to be transferred, a charging operation of a charger adapted to charge the photoconductive drum and a charging operation of a transfer charger are stopped. A bias voltage to be applied to a surface portion of the photoconductive element which follows the above-mentioned surface portion is increased.
REFERENCES:
patent: 4382674 (1983-05-01), Miyoshi et al.
patent: 4462679 (1984-06-01), Itaya
patent: 4674860 (1987-06-01), Tokunaga et al.
patent: 4678317 (1987-07-01), Grossinger
patent: 4814834 (1989-03-01), Endo et al.
Grimley A. T.
Luddy Susan
Ricoh & Company, Ltd.
LandOfFree
Control device for a copier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control device for a copier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for a copier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2302067