| 摘要 |
An image forming apparatus includes a body, a developing unit detachably installed within the body, and a body cover installed at one side of the body, to open or close an opening for installation of the developing unit. The developing unit includes a developing cartridge provided with a waste developing agent outlet, and a developing agent cartridge provided with a waste developing agent inlet. The waste developing agent outlet is closed by a second shutter member when the opening is opened. The waste developing agent inlet is closed by a first shutter member when the developing agent cartridge is separated from the developing cartridge. Accordingly, there is no leakage of waste developing agent during replacement of the developing cartridge or developing agent cartridge.
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