| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing unit free from deterioration of the image quality by filling up a developer storing chamber with waste toner recovered to a waste toner recovery bag and preventing a hole from being bored on the developing unit at the time of exchanging the developing unit as a developing unit used for an image forming device. SOLUTION: The waste toner recovery bag 36 is fixed onto the inner wall of the developer storing chamber 34 of the developing unit (toner set TS), and the fixed position is set to a lower position in the developer storing chamber near a filling port for new toner. By such constitution, the new toner is stored at the lower part of the bag 36 first, and when the waste toner is recovered thereafter, the waste toner is successively recovered in the bag 36, then the bag 36 is filled up with the waste toner. By such constitution, the space of the developer storing chamber is effectively utilized, and the developing unit can not be filled with the new toner so as to be reused, whereby it is prevented from being easily regenerated. |
