Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2006-06-15
2009-06-30
Brase, Sandra L (Department: 2852)
Electrophotography
Internal machine environment
Particle or contaminant control
C399S066000
Reexamination Certificate
active
07555236
ABSTRACT:
An image forming apparatus includes an image bearing member configured to bear an image on a surface thereof, a transfer unit configured to transfer the image formed on the surface of the image bearing member onto a recording medium, a bias applying unit configured to apply a bias voltage to the transfer unit to remove a developer adhered on a surface of the transfer unit to the surface of the image bearing member, a detecting unit configured to detect a width of the recording medium in a sheet conveyance direction, and a control unit configured to determine whether a cleaning operation of the transfer unit is performed, based on the width of the recording medium detected by the detecting unit and a number of the recording medium printed.
REFERENCES:
patent: 5717981 (1998-02-01), Yamanaka
patent: 5999763 (1999-12-01), Hiroshima et al.
patent: 6223008 (2001-04-01), Takahashi et al.
patent: 6336025 (2002-01-01), Saeki
patent: 6487387 (2002-11-01), Kusaba et al.
patent: 7127191 (2006-10-01), Mori et al.
patent: 7162178 (2007-01-01), Takiguchi et al.
patent: 2005/0047816 (2005-03-01), Uchida et al.
patent: 2006/0056884 (2006-03-01), Sawai et al.
patent: 5-27605 (1993-02-01), None
patent: 6-314035 (1994-11-01), None
patent: 2557710 (1996-09-01), None
patent: 2002-49275 (2002-02-01), None
patent: 2002-72713 (2002-03-01), None
U.S. Appl. No. 11/934,981, filed Nov. 5, 2007, Furuya, et al.
U.S. Appl. No. 11/739,391, filed Apr. 24, 2007, Yokokawa et al.
Brase Sandra L
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
LandOfFree
Image forming method and apparatus for effectively... 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 method and apparatus for effectively..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming method and apparatus for effectively... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4107715