Electrophotography – Control of electrophotography process – Control of transfer
Reexamination Certificate
2006-02-21
2006-02-21
Royer, Willliam J. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of transfer
C399S302000, C399S314000
Reexamination Certificate
active
07003238
ABSTRACT:
An intermediate image transfer type of image forming apparatus of the present invention includes an image carrier, an intermediate image transfer body, primary image transferring means for transferring a toner image from the image carrier to the intermediate image transfer body, and secondary image transferring means for transferring the toner image from the intermediate image transfer body to a sheet. When the surface resistivity of the intermediate image transfer body is measured by a method that repeatedly applies a voltage of 200 V for 60 seconds to the intermediate image transfer body and grounds the intermediate image transfer body for 10 seconds 1,000 consecutive times, a difference in absolute value between the logarithm of the first time of measurement and that of the thousandth time of measurement is 0.5 log Ω/□ or below.
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European Search Report.
Fujiwara Yoshihiro
Kato Shinji
Kayahara Shin
Ogiyama Hiromi
Sawai Yuuji
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
Royer Willliam J.
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