Electrophotography – Image formation – Development
Reexamination Certificate
2008-08-22
2011-10-25
Gray, David (Department: 2852)
Electrophotography
Image formation
Development
Reexamination Certificate
active
08045900
ABSTRACT:
A developing device, process cartridge, and image forming apparatus, have transport members with screw and shaft portions, transporting developer within the device in a longitudinal direction of a circulation path. A supply supplies new carrier to the device. A discharge aperture in a transport path wall of one transport member discharges developer outside the circulation path, when a surface of the developer transported by the one transport member exceeds a predetermined height. A bias path aperture in the transport path wall upstream of the discharge aperture has a bottom at a higher level than a bottom of the discharge aperture, and diverts developer at a level higher than the bottom of the discharge aperture to another transport member. An area in the longitudinal direction of the one transport member has no screw portion, and the discharge aperture is disposed opposite the area and has a length smaller than the area.
REFERENCES:
patent: 6047154 (2000-04-01), Kawaguchi
patent: 6978106 (2005-12-01), Masuda
patent: 2003/0086727 (2003-05-01), Iwata
patent: 2004/0265008 (2004-12-01), Tomono et al.
patent: 2005/0123312 (2005-06-01), Mabuchi
patent: 2007/0025773 (2007-02-01), Tateyama et al.
patent: 2007/0274742 (2007-11-01), Nakayama et al.
patent: 2007/0280744 (2007-12-01), Kubo et al.
patent: 2008/0101818 (2008-05-01), Shimojima et al.
patent: 2008/0152394 (2008-06-01), Hatakeyama et al.
patent: 11-219013 (1999-08-01), None
patent: 2000-112238 (2000-04-01), None
patent: 2001-83802 (2001-03-01), None
patent: 2003-263012 (2003-09-01), None
U.S Appl. No. 12/204,337, filed Sep. 4, 2008, Tateyama, et al.
Fujinuma Yoshitaka
Kubo Tatsuya
Tateyama Susumu
Gray David
Lactaoen Billy J
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
LandOfFree
Developing device, process cartridge, and image forming... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Developing device, process cartridge, and image forming..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing device, process cartridge, and image forming... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4300579