| 摘要 |
PURPOSE: To provide an image forming device capable of the image forming without the image deterioration. CONSTITUTION: The image forming device is provided with electrostatic actuator transporting units 10 and 12 for transporting the sheet material, speed sensors 19 and 20 for detecting the speed of the transported sheet material, and a speed measuring unit (control part 7) for measuring the speed with the signal from the speed sensors 19 and 20. The controlled system is controlled based on the change of speed measured by the speed measuring means (control part 7), by the control part 7, i.e., by at least one of the control means out of the light quantity control means, the electrification voltage control means, the developing bias control means, the transfer voltage control means and the separation voltage control means. |
