Patent ID: 7030345

Claim:
An image heating apparatus, comprising: a magnetic flux generator configured to generate magnetic flux by electric power supply thereto; an electric power supply controller configured to control the electric power supply to said magnetic flux generator; a heat generation member which generates heat by the magnetic flux generated by said magnetic flux generator and heats an image on a recording material, wherein the amount of heat generated by said heat generation member is reduced in the neighborhood of a Curie temperature of said heat generation member due to a heat generation property of said heat generation member; a detector configured and positioned to detect information relating to a temperature at which the rate of temperature rise of said heat generation member per unit time upon the supply of a predetermined electric power to said magnetic flux generator becomes lower than a predetermined value due to the heat generation property of said heat generation member; a discriminator configured to discriminate, on the basis of the information detected by said detector, whether or not the temperature at which the rate of temperature rise becomes lower than the predetermined value is not higher than a preset first temperature, or whether or not the temperature at which the rate of temperature rise becomes lower than the predetermined value is not lower than a second temperature which is lower than the first temperature; and a controller configured to control prohibition of the electric power supply to said magnetic flux generator on the basis of a discrimination result of said discriminator.