Image forming apparatus

An image forming apparatus includes a developing device. The developing device transports a two-component developer by a transporting unit so that the two-component developer passes through a developing roller. The two-component developer is stored in a storage chamber provided with a transporting path. The transporting unit rotates in the transporting path. The developing device causes a portion of the two-component developer to overflow from a discharge port provided at the transporting path, and to discharge the two-component developer. The image forming apparatus has a period in which a first operation is executed, the first operation of reversely rotating the transporting unit at a high speed so that a rotational direction of the transporting unit is an opposite direction to that at a time of development and a rotational speed of the transporting unit is higher than that at the time of development.