| 摘要 |
PURPOSE:To make a color image forming device small in size and light in weight by having first - third modes on the cleaning control means of a photosensitive belt, and selecting the first, second or third mode according to the length of a transfer form. CONSTITUTION:The length of the photosensitive belt from a transfer central position to a position where a blade edge pressurizing with contact to the photosensitive belt is constant, so that a pressurized contact position P31 is specified, but a releasing position P32 can be changed according to the length of the transfer form. The releasing position P32 can be controlled by the cleaning control means such that. Therefore, the first, second, and third modes can be freely selected by the cleaning control means cleaning the photosensitive belt. |
