Patent ID: 8666291

Claim:
A developer container, comprising: a developer vessel, having a cylindrical shape, that carries and discharges developer contained therein through its first discharge opening while the developer vessel is being driven to rotate around a shaft line; and a developer supply section including (i) a temporary storing section which surrounds a periphery of the first discharge opening and temporarily stores the developer discharged from the first discharge opening, (ii) a second discharge opening from which the developer is discharged outside of the developer supply section, and (iii) a carrying section that carries the developer from the temporary storing section toward the second discharge opening, said developer supply section supporting the developer vessel such that the developer vessel can rotate around the shaft line, the developer contained in the developer vessel being discharged outside of the developer container through the first discharge opening and the second discharge opening, the first discharge opening being formed in an inclined surface of an edge part of the developer vessel, the inclined surface inclining, upstream of a direction in which the developer is carried along the shaft line, so as to be at angles with a surface perpendicular to the shaft line; and the developer supply section includes a discharge quantity regulatory section which (i) covers the first discharge opening and (ii) has a surface parallel to the surface perpendicular to the shaft line, in which surface an opening is formed, through which opening the developer is put through to the temporary storing section from the developer vessel when the first discharge opening reaches, in response to the rotation of the developing vessel, around a lower side in a direction in which the developing vessel is placed.