| 摘要 |
A developing unit is intended to have a capability of efficiently exhausting developing powder. The developing unit is constructed to have a developing bath (2), one or more rollers (4) for development, an exhausting mechanism (27) for exhausting the developing powder out of the developing bath, a shielding member (35) for shielding the exhausting mechanism from the developing bath or exposing it to the developing bath, and a control unit for controlling the rollers, the exhausting mechanism and the shielding member. When exhausting the developing powder, the control unit operates to drive the rollers and then activate the shielding member for exposing the exhausting mechanism to the inside of the developing bath after a certain time is elapsed since the rollers are driven. <IMAGE> |
