| 摘要 |
PURPOSE:To prevent a cleaning blade from being inverted by executing control so that the surface of a photosensitive drum is electrostatically charged at the first replenishing time of developer. CONSTITUTION:When a developing device is installed, the developer is put in a hopper and the hopper is set to the developing device, first. Next, when a developing device installing mode is turned on by a switch on a control panel or the like, a developer carrying means is started to be rotated and the photosensitive drum is also started to be rotated. When the developer is started to be replenished at the first replenishing time of the developer in such a way, the surface of an image carrier is also started to be moved. At this time, an electrostatic charger is energized and the surface is uniformly electrostatically charged. Besides, the replenished developer is attached on the surface by electrostatic attracting force. Thus, frictional resistance between the member of a cleaning device and the surface is reduced and the member is prevented from being inverted. |
