| 摘要 |
<p>The invention relates to a supply means for magnetically attractive developing powder, comprising a reservoir (9) provided with an outflow opening (13) for supplying a magnetically attractive developing powder (21) from the reservoir to a developing unit. The reservoir is provided with two magnetic systems (15,16) each rotatable about an axis of rotation and each at least partially being surrounded by a stationary enclosure over which the developing powder can be displaced under the influence of the rotating magnetic systems. The magnetic systems are disposed opposite one another with the axes of rotation parallel to one another. The stationary enclosures of the two magnetic systems together form the outflow opening, while in a supply mode the magnetic systems are adapted to effect transport of developing powder through the outflow opening by rotation and in a stationary mode the magnetic systems are adapted to prevent transport of developing powder through the outflow opening. <IMAGE></p> |
