| 摘要 |
A developer cartridge holds developer that is supplied into a print process cartridge of an image forming apparatus. The developer cartridge includes a fresh developer chamber and a waste developer chamber. The fresh developer chamber holds fresh developer in it. The waste developer chamber holds waste developer in it. An inlet is formed in the waste developer chamber. The waste developer is received through the inlet into the waste developer chamber. A first opening-and-closing member opens and closes the inlet. A mechanism drives the first opening-and-closing member to open the inlet when an operating member is positioned to a first position after the developer cartridge is attached to the print process cartridge. The mechanism driving the first opening-and-closing member to close the inlet when the operating member is positioned to a second position before the developer cartridge is detached from the print process cartridge.
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