Electrophotography – Image formation – Transfer
Reexamination Certificate
2007-06-06
2010-06-22
Lee, Susan S (Department: 2884)
Electrophotography
Image formation
Transfer
C399S308000
Reexamination Certificate
active
07742729
ABSTRACT:
A transfer device including a first combination including an intermediate transfer medium and a transfer member applying a transfer bias, and/or a second combination including an intermediate transfer medium, a second transfer member applying a second transfer bias, and an opposing member configured to transfer the toner image on the intermediate transfer medium to a receiving material at a second transfer nip. When the first combination is subjected to 60-second application of a voltage of 1 kV, followed by discharging, 300 times, the absolute value of logarithmic difference between first and 300thcombined volume resistances is not greater than 0.8 [log(Ω)]. When the second combination is subjected to 60-second application of a voltage of −1 kV, followed by discharging, 300 times, the absolute value of logarithmic difference between the first and 300thcombined volume resistances is not greater than 0.5 [log(Ω)].
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Lee Susan S
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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