| 摘要 |
PURPOSE:To circulate magnetic particles in a container sufficiently by providing a member which stirs the interface between a base layer of magnetic particles and a developer above it. CONSTITUTION:A stirring means 24 is provided near the boundary surface between the base layer and a nonmagnetic developer layer and closely to the falling point of the nonmagnetic developer, and fitted to a rotation driving shaft 26 fitted to the developer supply container 13 through plural support rods 28. Further, the stirring means 24 has a stirring member 30 extending at right angles to the paper surface and rotates around the driving shaft 26 as shown by an arrow (d). The circulation of magnetic particles in the base layer is accelerated by the rotation of the stirring means 24 and the nonmagnetic developer at the upper part is taken in and supplied to the base layer part, so the nonmagnetic developer is supplied smoothly. Consequently, the magnetic particles are circulated in the container sufficiently. |
