Patent ID: 8385772

Claim:
An image forming apparatus comprising: a main body that comprises a door capable of opening and closing; a process cartridge that is loaded into the main body and comprises a toner inlet, the process cartridge having an inlet shutter disposed on the process cartridge to open and close the toner inlet, the inlet shutter operating together with an inner shutter of a toner cartridge; and the toner cartridge that contains toner to be supplied to the process cartridge, is attached to and detached from the main body through the door, and comprises a toner outlet connected to the toner inlet, the inner shutter having an opening and being capable of moving to an open position in which the opening is in communication with the toner outlet and a closed position in which the toner outlet is closed, and an outer shutter that is disposed outside the inner shutter and is capable of moving to a first position and a second position respectively not allowing and allowing the toner to be discharged through the opening, wherein the outer shutter moves to the second position when the toner cartridge is loaded into the main body, and the inner shutter moves from the closed position to the open position by being interlocked in a closing operation of the door after the toner cartridge is loaded into the main body.