作者: Takeshi Arimitsu , Kanji Yokomori
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摘要: PURPOSE: A process cartridge, a photosensitive drum, an electrophotographic image forming apparatus and color are provided to install the cartridge including developer in main assembly conveniently by protrusion recess keeping constant assembling angle. CONSTITUTION: is detachably mounted of for on recording material. The includes motor, driving member transmitting force from twisted at central portion with integrally rotating having non-circular cross-section plural corners. drum(1), unit acting projection corners one longitudinal end drum recess, permitting engagement between protection only predetermined relative rotational position. When apparatus, transmitted engaged recess.