Patent ID: 7711292

Claim:
A toner cartridge removably attached to an image forming device, the toner cartridge comprising: a container main body configured to contain toner and having a toner outlet; a lever rotatably supported by the container main body and configured to operate a shutter mechanism that opens and closes the toner outlet of the container main body, the shutter mechanism includes a gear that is rotatable around an axis different from a pivot axis of the lever and rotates in conjunction with the shutter mechanism and the lever; a lever locking mechanism configured to lock the lever so as to be inoperative while the toner outlet is closed by way of the shutter mechanism; a lock releasing mechanism configured to unlock the lever which is locked by the lever locking mechanism in conjunction with installation of the container main body in the image forming device; and a prevention mechanism configured to prevent the container main body from being taken out of the image forming device while the container main body is installed in the image forming device and the toner outlet is open.