Agitator and developing apparatus and image forming device having the same

摘要

A developer agitator (40) of an image forming device capable of improving the electrification rate of a developer is disclosed. The developer agitator includes a rotatable shaft (91) and an agitating wing (42) disposed on the circumferential surface of the shaft. The agitating wing has an uneven part (43) formed to increase the contact area with a developer. The developer agitator can obtain an electrification rate of the developer required for high speed printing, thereby allowing the image forming device to be operated at a high speed.