| 摘要 |
An image forming unit includes an elastic roller that rotates in contact with a recording medium to apply a force thereto, a rigid roller disposed facing the elastic roller and that contacts the recording medium, and a pressing device that applies pressing force to each end of the elastic roller or the rigid roller in an axial direction to press one of the elastic roller and the rigid roller against the other. The elastic roller includes a straight roller portion disposed in a specified region extending from a center of the elastic roller toward each end of the elastic roller in the axial direction, and taper roller portions that sandwich the straight roller portion in the axial direction. Each taper roller portion has an outside diameter decreasing from an outer end of the straight roller portion toward an outer end of the elastic roller in the axial direction. |
