| 摘要 |
PROBLEM TO BE SOLVED: To effectively restrain abnormal overheating at both ends of a fixing roller. SOLUTION: The fixing device 20 is equipped with: a fixing member 30 to be heated up by induction heating caused by magnetism from an induction coil 34; and a pressure member 40 abutting on the fixing member 30 so as to form a nip part N through which paper P is made to pass. A heating layer 32 being the component of the fixing member 30 is constituted of a temperature sensitive metallic layer 321 composed of temperature sensitive metal and formed on the induction coil 34 side, and a non-magnetic metallic layer 322 composed of non-magnetic metal and laminated on the temperature sensitive metallic layer 321. The non-magnetic metallic layer 322 is formed of metal (copper (Cu)) having a smaller specific resistance value than that of aluminum and its thickness dimension is set to the dimension (30 μm) wherein the temperature does not rise substantially by the induction heating. COPYRIGHT: (C)2007,JPO&INPIT |
