| 摘要 |
A developing devices comprises a toner cartridge receiver (2), and a toner cartridge (4). The toner cartridge (4) incudes a container body (42) having a toner discharge opening (88), and a shutter member (92) mounted on the container body (42) so as to be free to reciprocate between a closing position where it covers the toner discharge opening (88) and an opening position where it is displaced from the toner discharge opening (88). By bringing the container body (42) to the position of insertion, and then moving it to the position of mounting, the toner cartridge (4) is detachably mounted on the toner cartridge receiver (2). The toner cartridge receiver (2) is provided with a shutter member forwarding means (22,30) and a shutter member returning means (20) which, when the container body (42) is brought to the position of insertion, are situated so as to face the shutter member (92), thereby inhibiting the movement of the shutter member (92). When the container body (42) is moved from the position of insertion to the position of mounting, the shutter member (92) is forwarded relatively from the closing position to the opening position. When the container body (42) is moved from the position of mounting to the position of insertion, the shutter member (92) is returned relatively from the opening position to the closing position. <IMAGE> |
