Developing toner supply device with detachable toner cartridge and toner supply shielding member

摘要: In this developing toner supply device, the main body of a cartridge having an unused storing room is designed in longitudinal vessel shape. A projecting portion projected from front wall at casing side to engage with recess portion. semi-circular support formed project toward side. longitudinally-extending opening on wall. semi-cylindrical rotating member engages and opens rotatably between closing position where closed opened. When detached casing, closed. The flat surface serves as outer cartridge. Accordingly, attachment can be avoided much possible.