Electrophotography – Control of electrophotography process – Having temperature or humidity detection
Reexamination Certificate
2011-03-29
2011-03-29
Gray, David M (Department: 2852)
Electrophotography
Control of electrophotography process
Having temperature or humidity detection
C399S055000, C399S088000, C399S270000, C399S281000
Reexamination Certificate
active
07917046
ABSTRACT:
The first direct-current bias power supply applying the first direct-current bias Vdc1and the first alternating-current bias power supply applying the first alternating-current bias Vac1are connected to a development roller. The second direct-current bias power supply applying the second direct-current bias Vdc2and the second alternating-current bias power supply applying the second alternating-current bias Vac2are connected to a magnetic roller. The peak-to-peak value Vpp of the first alternating-current bias Vac1applied to the development roller remains the same, and the second alternating-current bias Vac2that is in phase with the first alternating-current bias Vac1and that has a peak-to-peak value of a predetermined value or above is applied to the magnetic roller. Thus, the potential difference between the peak voltage of the development bias on the opposite polarity side to the polarity of the toner and the peak voltage of a supply bias is set at a predetermined value or below.
REFERENCES:
patent: 7221881 (2007-05-01), Do
patent: 2006/0067719 (2006-03-01), Karasawa
patent: 2007/0053705 (2007-03-01), Takahashi
patent: 2007/0286625 (2007-12-01), Fukuyama et al.
patent: 2007/0286647 (2007-12-01), Sano et al.
patent: 2008/0118279 (2008-05-01), Maeyama et al.
patent: 2001-134066 (2001-05-01), None
Gray David M
Gray Francis
Kyocera Mita Corporation
Smith , Gambrell & Russell, LLP
LandOfFree
Development device and image forming apparatus provided... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Development device and image forming apparatus provided..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Development device and image forming apparatus provided... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2762823