Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus,申请号US20070860777-传众专利搜索

Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus

申请公布号：US7403733(B2)

申请号：US20070860777

申请日期：2007.09.25

申请公布日期：2008.07.22

申请人：

CANON KABUSHIKI KAISHA

发明人：WATANABE KAZUSHI;IKEMOTO ISAO

分类号：G03G21/00;G03G21/16;F16D1/10;G03G15/00;G03G21/18

主分类号：G03G21/00

摘要：A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a main assembly side gear for receiving driving force from the motor, a hole defined by twisted surfaces, the hole being substantially coaxial with the gear, and a main assembly side grounding contact provided in the hole, the process cartridge includes an electrophotographic photosensitive drum; process mechanisms actable on the photosensitive drum; and a projection engageable with the twisted surfaces, the projection being provided at a longitudinal end of the photosensitive drum, wherein when the main assembly side gear rotates with the hole and projection engaged with each other; rotational driving force is transmitted from the gear to the photosensitive drum through engagement between the hole and the projection; and a cartridge side grounding contact electrically connected with the electrophotographic photosensitive drum for electrically grounding the electrophotographic photosensitive drum when the process cartridge is mounted to the main assembly of the apparatus, the cartridge side grounding contact being provided on the projection so as to be electrically connectable with the main assembly side grounding contact.