Patent ID: 8606160

Claim:
An image heating apparatus comprising: an excitation coil; an image heating member configured to heat a toner image on a sheet, said image heating member generating heat by magnetic flux from said excitation coil; a magnetic flux constraining member configured to constrain a part of the magnetic flux actable on said image heating member; a moving mechanism configured to move said magnetic flux constraining member between a first position where the magnetic flux directed toward a predetermined longitudinal end region of said image heating member is not constrained and a second position where the magnetic flux directed toward the predetermined longitudinal end region of said image heating member is constrained; and an electric power controller configured to control electric power supplied to said excitation coil, wherein said electric power controller changes the electric power supplied to said excitation coil from a first amount of electric power to a second amount of electric power, which is smaller than the first amount of electric power, upon a moving operation of said magnetic flux constraining member from the first position to the second position, and continues the supply of the second amount of electric power to said excitation coil after said magnetic flux constraining member is moved to the second position.