Developer cartridge and developing apparatus

摘要

A developer cartridge (C) detachably mountable to a developing apparatus (5) having a shutter (20) for closing and opening a developer receiving opening (5f), includes a cylindrical portion (12) for accommodating a developer, the cylindrical portion being provided with an opening (12a) extending along a length thereof; a sealing member (12c) for the opening; a first projection (14a1) for moving the shutter to an open position for the developer receiving opening in interrelation with rotation of the developer cartridge in a first direction; a second projection (14a2) for moving the shutter to a close position for the developer receiving opening in interrelation with rotation of the developer cartridge in a second direction which is opposite from the first direction.