| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of the scattering of toner at the time of supplying fresh toner caused by the entering of an air flow into a developing device when a screw pump is used as a recovered toner transfer means in an image forming device provided with the recovered toner transfer means for transferring the toner recovered with a cleaning device to the developing device. SOLUTION: In the image forming device provided with a means for supplying fresh toner to the developing device and the recovered toner transfer means 500 for transferring the toner recovered by the cleaning device 200 to the developing device, the recovered toner transfer means 500 is provided with α screw pump means 520 having a rotor and a stator and an air supplying means 532 for supplying air for fluidizing and transferring the toner, to the screw pump means 520. The air supplying means 532 is constituted to stop the supply of the air, while the fresh toner supplying means supplies the fresh toner to the developing device. |
