Electrophotography – Control of electrophotography process – Control of developing
Reexamination Certificate
2011-08-23
2011-08-23
Beatty, Robert (Department: 2852)
Electrophotography
Control of electrophotography process
Control of developing
Reexamination Certificate
active
08005386
ABSTRACT:
In an image forming apparatus having a toner density sensor which emits light to a developer carried on a developing sleeve and which detects developer density by a reflection output value from the developer, when a reflection output value when the developer is initially set with respect to the illumination light of the toner density sensor is defined as A and a reflection output value of a region of at least the developing sleeve which is opposed to the toner density sensor when the developer is not carried on the developing sleeve is defined as B, a value of B/A is in a range of 0.3<B/A<2.
REFERENCES:
patent: 3830401 (1974-08-01), Benwood et al.
patent: 4155638 (1979-05-01), Blitzer
patent: 4313671 (1982-02-01), Kuru
patent: 4417544 (1983-11-01), Nishimura
patent: 4451135 (1984-05-01), Okumura
patent: 4550998 (1985-11-01), Nishikawa
patent: 4551002 (1985-11-01), Aoki et al.
patent: 4648702 (1987-03-01), Goto
patent: 4804996 (1989-02-01), Snelling
patent: 4883019 (1989-11-01), Menjo et al.
patent: 5216469 (1993-06-01), Yamada
patent: 5402209 (1995-03-01), Itoyama et al.
patent: 63148282 (1988-06-01), None
patent: 1-186983 (1989-07-01), None
patent: 5-313495 (1993-11-01), None
patent: 5-313496 (1993-11-01), None
patent: 05302892 (1993-11-01), None
patent: 2002-91156 (2002-03-01), None
Beatty Robert
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
LandOfFree
Image forming apparatus having density sensor for developer... 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 having density sensor for developer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus having density sensor for developer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2636464