| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device permitting to prevent a developer carrier or an image carrier from coming in contact with each other and being damaged by turning operation of the developing device, when developer is not being carried on the developer carrier. SOLUTION: A tension part is arranged so as to be able to come in contact with a developing roller of the developing unit positioned at a developing position by arranging back-up rollers 35 for pushing outward the photoreceptor belt 1 to be movable, positioning them usually at the side of color developing unit as shown by solid lines, and pushing outward one tension part on the side of the color developing unit, of the two tension parts on the photoreceptor belt 1. And, at the time of setting up, the above-mentioned tension part is separated from the above-mentioned developing roller so as not to come in contact with each other by positioning the tense expansion part on the opposite side of the color developing unit. |
