A process cartridge is detachably mountable to a main assembly of an
electrophotographic image forming apparatus. The cartridge includes an
electrophotographic photosensitive drum, a developing roller, a drum unit
containing the drum, a developing unit containing the roller and being
movable so the roller contacts and is spaced from the drum, and a first
force receiver receiving a force from a main-assembly first force applier
by movement of a door from open to closed positions when mounting the
cartridge, and a second force receiver movable from a stand-by position
by movement of the first force receiver by a force received from the
first force applier. The second force receiver takes a projected position
receiving a force from the second force applier to move the developing
unit so the roller moves out of contact with the drum, the projected
position being higher than the stand-by position.