| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-component developing device and an image forming device by which developer passes through the same path as a toner replenishing path in an opposite direction and is recovered outside a developing device, and by which the developer can be surely exchanged by a user himself without troubling a service man. SOLUTION: A shutter 70 opening/closing by the position of the developing device by the rotation of a revolver developing device is provided on the development aperture part 65 of the toner replenishing path. When the developer inside the developing device is recovered, the revolver developing device is rotated in a direction opposite to the one in the case of developing. The developer inside the developing device is gradually move in a direction opposite to the one in the case of toner replenishment along the spiral screw blades of first and second stirring screws 42 and 43 by the rotation of the revolver, scraped by the shutter at the part 65, so that the developer is drawn up on a replenishment screw 47 side. Then the developer is carried to a toner discharge port 48 along the replenishment screw and recovered inside a toner bottle. |
