| 摘要 |
PURPOSE:To prevent scattering of a toner and a density drop of a developer by stopping an image carrying body, at the time of adjusting a detecting level of a toner density detecting means. CONSTITUTION:In case of executing an adjustment of a magnetic sensor 51 by following a change of a development density, if a selecting switch S is turned on in advance, and subsequently, a power source switch is turned on, a main control part 71 executes an initialization such as clear, etc., of a memory. Subsequently, by stopping the driving of a main motor 78, a rotation of a photosensitive drum is stopped, and by controlling a driver 73, a motor 74, namely, a developing roller and a developer stirring body are rotated. Subsequently, a new developer is stirred enough, and when it becomes a uniform density, the motor 74 is stopped, and an output level of the magnetic sensor 51 is adjusted. Next, if the selecting switch S is turned off, the main control part 71 drives the main motor 78 and rotates a photosensitive drum 3, and the device becomes a copying state. |
