| 摘要 |
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus for forming an image on a recording material, the process cartridge includes an electrophotographic photosensitive drum; a drum shaft for being rotated by a driving force supplied from the main assembly of the apparatus and for transmitting a rotating force to the electrophotographic photosensitive drum; and a notification member, movably provided on the drum shaft, for notifying, when the process cartridge is mounted to the main assembly of the apparatus, that process cartridge has reached at least a state that process cartridge has been used for image formation, wherein when the main assembly of the apparatus detects that process cartridge has reached the state, the drum shaft is rotated in a direction opposite to a rotational direction for the image formation to make the notification.
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