Patent ID: 7035574

Claim:
A developer container designed to be detachably and attachably mounted in an image forming apparatus, comprising: a container main body, formed in a cylindrical shape, for containing therein developer for use in image formation, the container main body having, about its outer periphery, a concavity which is sunk inward in a radial direction and a discharge hole for discharging developer into the concavity, the container main body being rotated about its axis to convey the developer contained therein toward the discharge hole; a supporting member for supporting the container main body rotatably about its axis by covering a part of the container main body which part includes at least the concavity and the discharge hole, from its outer side in the radial direction over its entire circumference, the supporting member having a leading through hole formed so as to face a path along which the concavity is moved in accompaniment with a rotation of the container main body, for leading the developer discharged from the discharge hole to outside; a leading-out member, formed in a sheet-like shape and extending from the leading through hole on an upstream side in a rotation direction, for leading the developer discharged from the discharge hole of the container main body to the leading through hole; and resilient-force generating means for loading the leading-out member with a resilient force that tends to bring an upstream side end in the rotation direction of the leading-out member into resilient contact with an outer peripheral surface of the concavity in the container main body.