Patent ID: 7657211

Claim:
An image forming device comprising: a device main body including a developer receiving port which includes an opening arranged to receive developer; and a developer discharge unit arranged to be removably attached to the device main body, and including a developer discharge port which includes an opening arranged to discharge the developer and a shutter arranged to open and close the developer discharge port; wherein when the developer discharge unit is attached to the device main body, the developer receiving port and the developer discharge port overlap each other; the shutter of the developer discharge unit is arranged such that, as the developer discharge unit is attached to the device main body by moving the developer discharge unit in a substantially linear attaching direction, the shutter moves in a substantially linear direction that is different from the substantially linear attaching direction of the developer discharge unit; and the developer discharge port of the developer discharge unit is opened accompanying an opening movement of the shutter, and an opening portion of the developer discharge port and an opening portion of the developer receiving port overlap each other at all times.