| 摘要 |
An image forming apparatus has a rotatable belt, a stretching unit for stretching the belt, a steering unit for stretching and steering the belt, wherein the steering unit includes a rotatable portion rotatable with rotation of the belt, a frictional portion, provided at each of opposite axial end of the rotation portion, for slidable contact with the belt, and a support for the rotatable portion and the frictional portion. A rotation shaft rotatably supports the support, and the steering unit is capable of steering the belt by rotation thereof from sliding between the belt and the frictional portion, wherein each of the frictional portions is provided with an inclined surface which is inclined to be further from a rotational axis of the rotation portion axially toward an outside, and wherein the belt is contacted to at least one of the inclined portions. |
