| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device in which when taking out a magnet roller from a developing sleeve, the developing sleeve and an abutting member which elastically abuts on the developing sleeve are kept abutted on each other, thereby preventing developer leakage.SOLUTION: The developing device C includes a developing sleeve regulating section configured in such a manner that, while a magnet roller regulating member 30 is detached, the amount by which the developing sleeve 21 is radially movable is regulated to equal to or smaller than the amount by which the abutting member elastically abutting on the developing sleeve 21, enters the developing sleeve 21. |
