Patent ID: 8583013

Claim:
An image forming apparatus comprising: a developer cartridge in which a developer is stored; a developing case in which a developing member, a first supply member, a second supply member disposed below the first supply member, and at least one auger to agitate a developer are provided; and a developer supply passage to supply the developer stored in the developer cartridge to the developing case, wherein the first supply member is disposed above a rotation axis of the at least one auger, and the second supply member is disposed below the rotation axis of the at least one auger, and wherein the developer container cartridge comprises: a developer container housing having an elongated storage space extending in an elongated direction to contain developer; a developer outlet provided at an end region of the developer container housing in the elongated direction to discharge developer to the developing case; a first agitator rotatably mounted in the developer container housing; a second agitator rotatably mounted in the developer container housing; a rotatable member rotatably mounted in the developer container housing to receive developer agitated by the first agitator and the second agitator, and to transfer the received developer in the elongated direction toward the developer outlet, the rotatable member disposed in parallel relationship with respect to the first agitator and the second agitator.