A waste toner agitator for an electrophotographic image forming apparatus includes a plurality of protrusions protrusively formed on a top surface of a cassette and, an actuator that is pivotably installed on sidewalls of the waste toner container. The actuator has a shaft that is installed inside of the waste toner container and provides a plurality of agitating wings for agitating the waste toner, and also includes a pivoting part that is installed outside of the waste toner container, is connected to the shaft, and contacts each of the protrusions. The waste toner container further includes a plurality of elastic members that are installed opposite to the pivoting part and are placed between a plurality of supporting parts provided outside of the waste toner container, and return the actuator to its original position after the actuator contacts the protrusion and is pivoted away from its original position.

 
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