Patent ID: 7873305
Filing Date: 2011-01-18
Classification: G03G

Abstract:
1. A developing unit of an image forming apparatus, the developing unit comprising: a developer cartridge detachably mounted on the developing unit; 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; a developer supply passage to supply a developer stored in the developer cartridge to the developing case; and a developer supplement unit mounted in a portion of the developing case that connects the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case, wherein the developer supplement unit is disposed above a rotation axis of the first supply member, and 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.