| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner supply device having a shutter member which is inserted in a toner supply path and moves to open/close the supply path, configured to properly prevent toner scattering from an opening for inserting the shutter member in the supply path.SOLUTION: A toner supply device includes a supply path 28f for supplying toner into a developing device, a shutter member 28a for opening/closing the supply path, and a shutter installation frame 28b having an opening 28Y for inserting the shutter member. Shutter arm parts 28a2, 28a2' arranged at a tip of the shutter member to be inserted in the opening have a width 28Y1 larger than a width 28Y2 of the opening when not inserted in the opening. When inserted, the shutter arm parts are deformed by sidewalls of the shutter installation frame, and move between an open position and a closed position. A coil spring 28g is interposed between the shutter arm parts. |
