Electrophotography – Diagnostics – Cleaning
Reexamination Certificate
2005-08-19
2008-05-13
Tran, Hoan (Department: 2852)
Electrophotography
Diagnostics
Cleaning
C399S120000
Reexamination Certificate
active
07373092
ABSTRACT:
An image forming apparatus includes an image carrying member, a transfer device, cleaning devices, and a waste toner collecting unit. The cleaning devices collect toner remaining on the image carrying member and toner remaining in the transfer device as waste toner after a toner image is transferred by the transfer device from the image carrying member to a recording medium. The waste toner collecting unit includes a container storing the waste toner, a conveying device provided in the container, and a detection unit provided above a position where the waste toner is pressed and up-thrust by the conveying device. The conveying device horizontally conveys the waste toner, and presses and up-thrusts the waste toner after an amount of the waste toner reaches a predetermined value. The detection unit is pressed and displaced by the pressed and up-thrust waste toner, and detected by a sensor.
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Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
Tran Hoan
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