Toner density control device for an image forming apparatus

Details Toner density control device for an image forming apparatus Toner density control device for an image forming apparatus

1989-04-28

1990-12-25

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355203, 355208, 355245, 118690, 118691, G03G 2100, G03G 1506

Patent

active

049807269

ABSTRACT:
A toner density control device for an electrophotographic copier, facsimile apparatus, laser printer or similar image forming apparatus of the type forming an image by depositing a toner on an electrostatic latent image. The device has two sensing circuits, i.e., a toner density sensing circuit and an image density sensing circuit. When one of the two sensing circuits fails, a toner is supplemented in response to an output of the other or normal sensing circuit. When the failed sensing circuit is restored to normal, the toner supply responsive solely to the other sensing circuit is cancelled so that both of the two sensing means join in the toner supply control.

REFERENCES:
patent: 4248527 (1981-02-01), Akiyama et al.
patent: 4468112 (1984-08-01), Suzuki et al.
patent: 4607933 (1986-08-01), Hanada et al.
patent: 4780744 (1988-10-01), Porter et al.
patent: 4833506 (1989-05-01), Kuru et al.

Affiliated with

Also associated with

Rating

Toner density control device for an 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 Toner density control device for an image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toner density control device for an image forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1166586