Patent ID: 8320803

Claim:
A developing device comprising: a developing container for accommodating a developer; a developer carrying member, provided rotatably in said developing container, for carrying and feeding the developer to develop an electrostatic image; a developer feeding member, including an elastic feeding portion and being rotatably provided in said developing container, for feeding the developer in said developing container toward said developer carrying member; and a circulation changing member for changing circulation of the developer in the neighborhood of said developer carrying member, wherein in a plane perpendicular to a rotational axis of said developer carrying member, said circulation changing member being provided in a maximum rotation area of said developer feeding member so as to create a gap between itself and an entire inner surface of said developing container and a gap between itself and said developer carrying member, wherein said circulation changing member has a bent cross-sectional shape in the plane, and wherein said circulation changing member is disposed in an attitude such that a bent portion of the bent cross-sectional shape is closest to said developer carrying member.