| 摘要 |
PROBLEM TO BE SOLVED: To surely obtain high recycling rate by providing a returning path for returning recovered developer to the upstream side of a classification device on the downstream side of the classification device in the moving direction of the recovered developer. SOLUTION: A discharge port for the returning path 131 is provided in parallel with discharge ports 61 and 62 for recovered toner fed to a toner classification device 60, and the waste toner which does not pass through a mesh 68 and drops to a recovery coil 70 is returned and discharged from the discharge port 131. Namely, the waste toner dropping to the recovery coil 70 is discharged from the discharge port 131 through a flexible toner carrying pipe and returned to the device 60 again. By such constitution, the toner which is not completely classified and drops to the coil 70 is classified again, so that the good-quality toner is surely used as recycled toner without being missed and the recycling efficiency is improved. |
