Patent ID: 7437113

Claim:
A image heating apparatus comprising: a coil for generating magnetic flux; a rotatable heat generation member having a heat generation portion, which generates heat by magnetic flux, for heating an image on a recording material; a temperature detecting member for detecting a temperature of said heat generation member; an energization controller portion for controlling energization to said coil on the basis of an output of said temperature detecting member; a first magnetic flux shielding portion for blocking, at a first magnetic flux adjustment position, the magnetic flux directed toward heat generation member from said coil toward a central portion of heat generation member, with respect to a rotational axis direction of heat generation member, while permitting the magnetic flux at an end portion, wherein the central portion includes a portion where said temperature detecting member detects the temperature of said heat generation member with respect to the rotational axis direction of said heat generation member; a second magnetic flux shielding portion for blocking, at a second magnetic flux adjustment position, the magnetic flux which is directed toward the end portion of said heat generation member from said coil; moving means for moving said first magnetic flux shielding portion and said second magnetic flux shielding portion; and a recovery operation controller portion for retracting said second magnetic flux shielding portion from the second magnetic flux adjustment position and moving said first magnetic flux shielding portion to the first magnetic flux adjustment position after completion of an image formation job, in which recording materials having widths as measured in a direction perpendicular to a feeding direction which are smaller than a maximum width of a recording material which can be fed are continuously fed, and executing energization control of said energization controller portion.