| 摘要 |
PROBLEM TO BE SOLVED: To almost completely prevent toner from leaking, at the time of attaching/detaching a toner cartridge to/from a developing device. SOLUTION: In this developing device making a toner cartridge 13 attachable/ detachable with respect to a developing machine 4Y by letting the toner cartridge to notating with regard to the developing device, the device is furnished with a toner injecting port 4c disposed on the developing device side and a shutter 25 for opening/closing the toner injecting port, and a shutter engaging piece 26, and moreover a toner discharging port 13b disposed on the toner cartridge side, and further, the shutter 22 and the shutter engaging piece 23, for opening/closing the toner discharging port, then, the device makes the toner discharging port and the toner injecting port opened/closed, in holding the shutter on the developing device side and the shutter on the cartridge side, and respectively holding by the shutter engaging piece on the cartridge side and shutter engaging piece on the developing device side, by means of turning the toner cartridge. |
