Patent ID: 8811859

Claim:
A developer container comprising: a container body in which a developer containing chamber for containing developer and a discharge outlet to discharge the developer from the developer containing chamber are formed; a developer conveyance member provided inside the container body to transport the developer inside the developer containing chamber, the developer conveyance member including a first conveyance portion to transport the developer toward the discharge outlet and a second conveyance portion downstream from the first conveyance portion in a developer conveyance direction of the developer conveyance member; a canopy disposed inside the container body and facing the discharge outlet via the developer conveyance member, a developer conveyance chamber defined by the canopy and an inner face of the container body in which the discharge outlet is formed, the developer conveyance chamber in which the developer conveyance member transports the developer; and a return opening formed in the canopy to return the developer from the developer conveyance chamber to the developer containing chamber, the return opening positioned downstream from the discharge outlet in the developer conveyance direction of the developer conveyance member, wherein the second conveyance portion of the developer conveyance member transports the developer toward the return opening formed in the canopy, and a developer conveyance velocity (Q 2 ) of the second conveyance portion of the developer conveyance member is slower than a developer conveyance velocity (Q 1 ) of the first conveyance portion.