| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing device that prevents deformation of a fixing roller at low costs and makes a nip between the fixing roller and a pressure roller uniform, thereby improving fixing performance, and to provide an image forming apparatus. SOLUTION: The fixing roller 1 has in it reinforcement ribs 9 that restrict deformation of the roller. The warp restricting device 10 having a pressing member 11 which is disposed opposite the pressure roller 2 and abuts on the peripheral face of the fixing roller 1 in order to restrict warp of the fixing roller 1 due to the press-contact of the pressure roller 2, is arranged. The pressing member 11 of the warp restricting device is positioned corresponding to the reinforcement ribs 9 in the fixing roller in the roller axial direction. Thus, while crush of the fixing roller in a radial direction is prevented by the reinforcement ribs 9, deformation of the fixing roller is prevented by hindering the fixing roller from warping and deforming in the axial direction. COPYRIGHT: (C)2004,JPO&NCIPI
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