| 摘要 |
PURPOSE:To respond change of the condition of an image formation, for instance even when in exchange of a recording body and in the abnormal environment by preparing a plural number of control. CONSTITUTION:A primary charger 51, an AC charger 69, a blank exposure lamp 70, a development roller 65 and a surface electrometer 67 are prepared for a photosensitive drum 47. As potential information from the surface electrometer is inputted into a microcomputer for potential controlling and the result is outputted as a primary current value, a secondary current value, and a development bias control value. Control programs are selected according to an exchange of a recording body. |
