| 摘要 |
PROBLEM TO BE SOLVED: To prevent toner scatter inside/outside a device body due to vibration during attachment/detachment by composing a shutter member out of a first shutter member which is positioned inside a toner supply port and a second shutter which is positioned outside the toner supply port and moves linked with the first shutter member. SOLUTION: By pushing in a toner replenishment device, the cylindrical portion of a projection 94 contacts the upward slope 114a of a guide lib, is pushed up against the biasing force of a spring member 96, and finally comes to rest on the flat top 114c of a guide rib. Accompanying the movement, the elastic member 90 of the first shutter member and the second shutter member 89 also move up along a guide and the external wall face of a toner lead-in cover 52, and the toner supply port 54 and the opening 91b of an elastic guide member 91 are opened. By pulling out the toner replenishment device, the projection 94 moves down along the slope 114a, therefore by the biasing force of the spring member 96 the first shutter member and the second shutter member 89 move in the directions in which they are automatically closed, so that they become closed. |
