| 摘要 |
An electrophotographic image forming apparatus includes a main assembly and a cartridge including a process device actable on an electrophotographic photosensitive member. The process cartridge is detachably mountable relative to the main assembly, with the cartridge including a first unit and a second unit pivotably connected with the first unit. An opening is provided in the main assembly of the apparatus for permitting mounting and demounting of the cartridge. An openable member is provided in the main assembly of the apparatus for openably closing the opening. An exposure device is provided on the openable member for exposing the electrophotographic photosensitive member. A first positioning portion is provided in the main assembly. The exposure device is provided with a second positioning portion for positioning between the exposure device and the second unit of the cartridge by engagement with the cartridge by closing the openable member. |
