Patent ID: 8126372

Claim:
A developer storage case comprising: a storage case that includes: a developer storage space that stores a developer therein; and an arc-shaped part; a discharge opening that discharges the developer stored in the developer storage space and is formed on the arc-shaped part, wherein the storage case defines an opening through which a developer passes into the developer storage space; a delivery member including: a rotation shaft that has one end supported on the storage case; and a delivery member main body that is supported on the rotation shaft, and that is disposed in contact with the wall surface of the developer storage space while being flexed, wherein the delivery member delivers the developer stored in the developer storage space to the discharge opening; and an opening closing member that is removably supported on the storage case, that closes the opening through which the developer passes into the developer storage space, and supports the other end of the rotation shaft, wherein the developer storage space has a substantially rectangular-shaped cross-section when viewed from an axial direction of the rotation shaft, and wherein a center of the arc-shaped part corresponds to a position of the rotation shaft.