Process cartridge, electrophotographic image forming apparatus,

Details Process cartridge, electrophotographic image forming apparatus, Process cartridge, electrophotographic image forming apparatus,

1996-03-26

1999-05-11

Brase, Sandra L.

Electrophotography

Having particular structure

Modular or displaceable

399111, 399159, 399167, G03G15/02

Patent

active

059038039

ABSTRACT:
An electrophotographic image forming apparatus for forming an image on a recording material includes an electrophotographic photosensitive drum; a charging device for charging the photosensitive drum; a developing device for developing a latent image formed on the photosensitive drum into a toner image; a transfer device for transferring the toner image onto the recording material; a fixing device for fixing the toner image on the recording material; a motor; a main assembly side gear for receiving driving force from the motor; a twisted hole formed substantially at a center of the gear, the hole having a polygonal cross-section; a twisted prism projection 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 the hole and the projection with the projection being pulled into the hole; and a moving device for imparting relative movement between the hole and the projection in a longitudinal direction of the photosensitive drum.

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