| 摘要 |
A fixing device includes magnetic field generating means for generating a high frequency magnetic field; electric power supplying means for electric power supply to the magnetic field generating means; electric power control means for controlling an electric power value to be supplied by the electric power supplying means; a fixing member, disposed in the magnetic field generated by the magnetic field generating means, having an electroconductive layer which generates heat by eddy currents generated by the magnetic field; a temperature detecting member for detecting a temperature of the fixing member; discriminating means for making discrimination as to whether or not the apparatus is in order by comparing a detected temperature provided by the temperature detecting member a reference temperature in a period from start of heating the fixing member to arrival at a predetermined temperature of the fixing member; and reference temperature changing means for changing the reference temperature on the basis of the supplied electric power value upon the electric power control means changing the electric power value.
|
