| 摘要 |
PURPOSE:To obtain an excellent output image by continuously controlling the exposure of a digital exposing system in accordance with changes in the quantity of electrostatic charging by a primary electrifier and all other physical quantities, in an image forming device using the digital exposing system of a laser, etc. CONSTITUTION:The potential of the surface of a photosensitive body when applied voltages for testing VLPa and VLPb are applied to a laser output device, to execute the exposure is measured so that a characteristic in an initial optimum time or another characteristic at the time of changing conditions is determined, a required surface potential VDC is substituted for these characteristic, respectively, to obtain a voltage VLPc or VLPc' and it is applied to the laser output device. |
