Patent ID: 8862035

Claim:
A process cartridge comprising: a first cartridge comprising: a developer container configured to contain developer, the developer container including an output port wall where an opening is open downward, the opening configured to convey developer from the developer container; and an agitating member positioned in the developer container and configured to rotate about an rotational axis to agitate the developer, the rotational axis of the agitating member being disposed at a position lower than the opening; and a second cartridge comprising: a developing roller configured to develop a developer image on a photosensitive drum, the developing roller including a first shaft; a supply roller configured to supply the developer to the developer roller, the supply roller including a second shaft; a case having an input port through which the developer is to be supplied from the opening of the first cartridge, the case being configured to rotatably support the first shaft of the developing roller and the second shaft of the supply roller; a protrusion which is protruding from the case; and a frame configured to rotatably support the photosensitive drum, the first cartridge being mounted on the frame and the frame having a first hole in which the protruding is slidably inserted.