| 摘要 |
An electrophotographic photosensitive drum usable with an electrophotographic image forming apparatus, includes a non-circular twisted projection having a cross-section with a plurality of corner portions, non-circular twisted projection being provided at one longitudinal end of the electrophotographic photosensitive drum, and being engageable with a non-circular twisted hole having a section with a plurality of corner portions, the non-circular twisted hole being disposed at a central portion of a driving rotatable member of a main assembly of the image forming apparatus; and a second electroconductive member contactable with a first electroconductive member electrically connected with a main assembly of the image forming apparatus, the first electroconductive member being disposed in the hole to provide a grounding of the electrophotographic photosensitive drum, the second electroconductive member being provided on the projection and being electrically connected with the electrophotographic photosensitive drum, wherein a contact position between the second electroconductive member and the first electroconductive member moves in interrelation with the projection being retracted toward the hole by rotation of the driving rotatable member when the projection is engaged with the projection.
|
