| 摘要 |
PURPOSE:To perform registration correction by which an image having no color slurring is formed in appropriate timing in the midst of consecutively forming the image. CONSTITUTION:When a detected value by an environment sensor SEN exceeds a specified value previously stored in a ROM at the time of consecutively printing plural sheets, a specified pattern image is formed between recording media by a registration controller 20. Every time the formed pattern image is read by a CCD sensors 10a and 10b and the pattern image data is stored in memories 42 and 43, the registration correction for a photoreceptive drum is performed by the controller 20 and a system controller 21, the deviation of registration caused by the environment state of the photoreceptive drum is detected and corrected in the appropriate timing. |
