Electrophotography – Supplemental electrophotographic process – Exposure or charging
Reexamination Certificate
2006-04-18
2006-04-18
Grimley, Arthur T. (Department: 2852)
Electrophotography
Supplemental electrophotographic process
Exposure or charging
C399S150000
Reexamination Certificate
active
07031641
ABSTRACT:
An image-forming apparatus includes a pre-charge exposure device which removes electric charge from a photoconductor drum to increase a potential contrast between the surface of the photoconductor drum and the surface of a charge roller in an upstream region of a nip region between the photoconductor drum and the charge roller in the rotating direction of the photoconductor drum, so that toner accumulating in an upstream region of the nip region in the rotating direction of the photoconductor drum is restrained and prevented from being discharged onto an image-forming region. When the toner accumulating in the upstream region of the nip region in the rotating direction of the photoconductor drum is to be discharged onto a non-image-forming region, the pre-charge exposure device is turned off so that the potential contrast decreases.
REFERENCES:
patent: 5933681 (1999-08-01), Suzuki
patent: 6442362 (2002-08-01), Hirabayashi et al.
patent: 10-307454 (1998-11-01), None
patent: 10-307455 (1998-11-01), None
patent: 10-307456 (1998-11-01), None
patent: 2003-043822 (2003-02-01), None
Chigono Yasunori
Nakahara Hisashi
Nakata Yasuhiro
Canon Kabushiki Kaisha
Canon U.S.A. Inc I.P. Div.
Gleitz Ryan
Grimley Arthur T.
LandOfFree
Image-forming apparatus having pre-charge exposure device... 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 pre-charge exposure device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image-forming apparatus having pre-charge exposure device... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3606675