| 摘要 |
A heating device is used in an image forming apparatus. In the heating device, a resin layer is provided between a core metal of a fixing roller and a ball bearing. The resin layer is adhered to the core metal so as to obviate a noise, caused by a rubbing of the resin layer against a ball bearing, which is otherwise produced when the resin layer is provided as a separate part. Between the resin layer and the ball bearing, a material of the resin layer is selected and the resin layer is configured to have a rough surface with a coefficient of dynamic friction of the surface of the resin which is a predetermined value, and thereby minimizing the production of the noise. The outer diameter of the portion of the heat roller supported by the bearing is larger than the portion of the heat roller that contacts a heated member.
|
