US Patent 9740140 Developer stirring member and image forming apparatus

A developer stirring member is supported by a rotation portion in a container that stores developer and is configured to stir the developer. The developer stirring member includes a base portion and a reinforcement portion. The base portion is a film-like member including a first supported portion and an end portion, the first supported portion being supported by the rotation portion, the end portion being a free end to pivot. The reinforcement portion is a film-like member overlapping only a part of the base portion that is on a first supported portion side.