| 摘要 |
A fixing device employing resistance heating system includes: a fixing roller being loosely inserted into an endless fixing belt; a pressure member being in pressure-contact with the fixing belt to form fixing nip; meandering prevention members preventing the fixing belt from meandering; prevention member holders holding the meandering prevention members for rotation independently from the fixing roller. Each meandering prevention member has rotation center inside circle, where, when seen in rotation axis direction of the fixing roller, the circle has center coincident with midpoint between two focal points of ellipse approximating belt rotation path of the fixing belt, and has radius equal to distance from the center of the circle to straight line passing through rotation center of the fixing roller and center of the nip in rotational direction of the fixing roller. |
