| 摘要 |
PURPOSE: To always form a high-quality image not having color smear, without futily interrupting the formation of an image by making the number of the execution times of a registration correcting mode extremely little and executing the registration correcting mode with proper timing. CONSTITUTION: This image forming device is constituted so that a deciding means successively decides whether the execution of the registration correcting mode is required or not from the execution history of the registration correcting mode by a controller 1 for executing the registration correcting mode for mechanically or electrically correcting the registration of each image forming station, based on the results of the detections of sensors 21 and 22 and the execution of the registration correcting mode is suspended with the result of the decision. |
