| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing device including an electrode with a low electrical resistivity and a high durability for feeding an electrical power to a resistance heating layer generating heat on current application, and to provide an image forming apparatus including the fixing device. SOLUTION: A circular electrode 415 made of metal includes: an electrode interlayer 4151 that is in contact with the resistance heating layer 412 of a heat fixing belt 41; and an electrode surface layer 4152 that is in contact with a power feeding member 44 and receives the electrical power for making the resistance heating layer 412 generate heat from the power feeding member 44. The electrodes 415 are provided on the outer circumferential surface of the heat fixing belt 41 at positions interposing a sheet passing region therebetween. The electrode surface layer 4152 has higher oxidation resistance than the electrode interlayer 4151, and a difference in linear expansion coefficient between the electrode interlayer 4151 and the resistance heating layer 412 is smaller than that between the electrode surface layer 4152 and the resistance heating layer 412. COPYRIGHT: (C)2011,JPO&INPIT |
