Patent ID: 6987251

Claim:
An image forming apparatus, comprising: a display, magnetic flux generation means, a rotatable induction heating element for generating heat by the action of magnetic flux generated by said magnetic flux generation means, said induction heating element heating a material to be heated by contacting the material to be heated, wherein said image forming apparatus further comprises Curie temperature reaching detection means for detecting that a temperature of said induction heating element reaches a Curie temperature, temperature detection means for detecting a surface temperature of said induction heating element, and downstream material, to be heated, reaching detection means for detecting whether or not the material to be heated reaches at least a conveyance passage, for the material to be heated, located downstream from said heating element in a predetermined time, and wherein when the temperature detected by said temperature detection means is lower than the Curie temperature and said Curie temperature reaching detection means detects that the temperature of said induction heating element reaches the Curie temperature during a heating operation, said image forming apparatus provides notification on said display that the material to be heated is wound around said induction heating element on the basis of a detection result of said downstream material, to be heated, reaching detection means during a previous heating operation.