| 摘要 |
PURPOSE:To prevent the leakage of a developer, in its exchange by a developing cartridge. CONSTITUTION:In this developing device provided with a developing roll 25a on a developing unit 25 and supplying/recovering the dveloper 26k by the developing cartridge 26 freely attachably/detachably engaged with the developing unit 25, a developing shutter 26d opening/closing linked with a toner carridge 27 engaged with the developing cartridge 26 is provided on a developer supplying port 26c and when the developing cartridge 26 is exchanged, the developing cartridge 26 and the developer 26k can be simultaneously exchanged in the state where the developer supplying port 26c is closed with the developing shutter 26d. |
