Patent ID: 8712293

Claim:
A toner cartridge, comprising: a housing defining a container in which to store developer; an agitator arranged rotatably in the housing in such a manner capable of agitating the developer contained in the housing; a gear comprising a gear body arranged outside of a sidewall of the housing, a coupling portion provided on a first side of the gear body and a first position determining portion provided on a second side of the gear body opposite the first side, the coupling portion being capable of being coupled to an end of a rotational shaft of the agitator in such a manner that rotation of the gear causes the agitator to rotate; and a support configured to rotatably support the gear, the support comprising a second position determining portion having a shape that corresponds to the first position determining portion so as to be capable of being coupled to the first position determining portion, wherein the gear is rotatable when the first position determining portion and the second position determining portion are coupled to each other, wherein one of the first and second position determining portions comprises a position determination protrusion, and wherein the other one of the first and second position determining portions comprises: a rotation portion configured to receive the position determination protrusion such that the position determination protrusion is rotatable therein; a position determination groove configured to allow the position determination protrusion to be received into the rotation portion when the position determination groove and the position determination protrusion are mutually aligned; and a separation preventing portion configured to interfere with a movement of the position determination protrusion in such a manner of preventing the position determination protrusion from escaping out of the rotation portion.