| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing apparatus for obtaining shorter fixing starting time, uniform heating, suppression of unevenness in temperature in a fixing nip part, power saving and for adapting also to a machine with a high copying speed. SOLUTION: A heating roller 3 consisting of conductive material and driven in rotation, a pressuring roller 4 brought into a rotating contact to the heating roller in a pressurized state and having a material to be fixed with a developer image formed on it pass through the rotating contact part and a conductive heating apparatus 2 installed in a heating roller and concentrating on heating the rotating contact part are provided. The conductive heating apparatus is provided with a core 10 consisting of high permeability material with its facing surface with the heating roller opened and a coil 11 surrounded by the core and generating a magnetic flux to the core by being fed with a high frequency current. The core is supported on both ends by core supporting members 43 consisting of a material with lower permeability than the core. COPYRIGHT: (C)2005,JPO&NCIPI
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