Process cartridge electrophotographic image forming apparatus an

Details Process cartridge electrophotographic image forming apparatus an Process cartridge electrophotographic image forming apparatus an

1997-09-26

2000-12-19

Braun, Fred L.

Electrophotography

Having particular structure

Modular or displaceable

G03G 1500, G03G 2100

Patent

active

061636657

ABSTRACT:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus for forming an image on a recording material, includes an electrophotographic photosensitive drum; process mechanism(s) actable on the drum; and a projection provided at a longitudinal end of the drum, for engagement with a twisted hole provided in the main assembly of the apparatus, when the process cartridge is mounted to the main assembly, preferably by movement of the hole in interrelation with an operable member. When a driving rotatable member in the main assembly is rotated with the projection engaged with the hole, rotational driving force is transmitted to the drum through the projection/hole engagement. The projection is drawn into the hole, and the process cartridge frame is contacted longitudinally to a regulating member in the main assembly of the apparatus to longitudinally position the drum relative to the main assembly.

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patent: 5697023 (1997-12-01), Yamazaki
patent: 5903803 (1999-05-01), Kawai et al.

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