| 摘要 |
PURPOSE: To shorten the time required for recovering developer by interrupting the developer at a prescribed time before a developing action is finished and continuing the developing action while the developer in a developer bank is consumed after it is interrupted. CONSTITUTION: When the developing action is not executed, a developing shutter 6 is closed. The shutter 6 is opened before the developing action is started and the developer 2 is attached to a developing magnet roll 10 provided before a doctor blade 8. Thereafter, the roll 10 and a recovery magnet roll 11 are rotated so as to start the developing action. When the developing action is finished, the shutter 6 is closed before the developing action is finished and the developing action is continued while the developer 2 at the back part of the blade 8 is consumed so that it is exhausted immediately after the developing action is finished. Therefore, the opening and closing time of the shutter 6 and an aperture state must be suitably set. In such a case, the closing time of the shutter 6 depends on the quantity of the developer 2 left in the developer bank 9 and it is emprically set before the developing action is finished. |
