| 摘要 |
PURPOSE:To prevent an offset by adjusting an electrifying voltage and a bias voltage of a photosensitive body according to the detected result of transmissivity of an original. CONSTITUTION:The title machine is provided with transmissivity detecting means 40 and 25 which detect transmissivity of the original 24, and a voltage adjusting means which adjusts the electrifying voltage and the bias voltage of the photosensitive body 1 according to the detected result of the transmissivity detecting means 40 and 25. Then, transmissivity of the original 24 is detected. The electrifying voltage and the bias voltage of the photosensitive body 1 are adjusted according to the detected result, or exposing light quantity is adjusted according to the detected result, or both mentioned processes are performed for developing. Therefore, an offset can be prevented. |
