Patent ID: 8725042
Filing Date: 2014-05-13
Classification: F16D,G03G

Abstract:
1. An electrophotographic photosensitive drum, usable in a process cartridge that is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including a motor, a main assembly gear for transmitting a driving force from the motor, and a twisted hole formed in the main assembly gear at a central portion thereof and having a substantially triangular cross-section, said photosensitive drum comprising: a cylinder having a photosensitive layer formed thereon, the cylinder being rotatable about an axis thereof; and a driving force transmitting part securely fixed to one axial end of the cylinder, the driving force transmitting part including (i) a gear encircling a peripheral portion of the driving force transmitting part and (ii) a projection disposed on a side of the gear opposite from the cylinder, the projection having a base and a free end, at least a portion of a cross-section of the projection at the base being offset from a corresponding portion of a cross-section of the projection at the free end, as seen in a direction of the axis.