| 摘要 |
PURPOSE:To evade flawing of a transfer intermediate body image surface and to prevent reduction in time glossiness of a transfer intermediate body surface affecting a black image stabilizing process by always executing speed control by a difference between the circumferential lengths of a belt-like photosensitive body and the transfer intermediate body on the nonimage part of the transfer intermediate body, at the time of executing the speed control. CONSTITUTION:The nonimage parts 33 and 34 are provided on both or at least one of the belt-like photosensitive body 3 and the transfer intermediate body 5 and marks 19a and 19b are provided on the nonimage part corresponding parts 33 and 34 of the photosensitive body 3 and the transfer intermediate body 5, respectively. These marks 19a and 19b are detected by a photosensor and having a paper timing the driving motor 18a of the photosensitive body 3 is rotated at a uniform speed in a state where the respective nonimage parts 33 and 34 of the photosensitive body 3 and the transfer intermediate body 5 come in contact with each other and moreover, the speed control of the driving motor 18b of the transfer intermediate body 5 is executed. Thus, the variance of the circumferential lengths between the belt-like photosensitive body and the transfer intermediate body can be corrected. |
