Patent ID: 8358949
Filing Date: 2013-01-22
Classification: G03G,H05B

Abstract:
1. An image heating apparatus comprising: a coil configured to generate a magnetic flux; an image heating member, having an electroconductive layer generating heat by the magnetic flux, configured to heat an image on recording material by the generated heat; a movable electroconductive magnetic flux adjusting member capable of reducing the amount of heat generation by the magnetic flux, by movement from a first position to a second position; a temperature sensor configured to detect the temperature of said image heating member; electric power control means for controlling electric power applied to said coil on the basis of an output of said temperature sensor; electric power switching means for supplying the electric power to said coil by control of said electric power control means under a first electric power condition when said magnetic flux adjusting member is in the first position, and for supplying the electric power to said coil by control of said electric power control means under a second electric power condition under which the electric power is lower than under the first electric power condition when said magnetic flux adjusting member is in the second position, wherein when said magnetic flux adjusting member is moved from the first position to the second position, said electric power switching means switches the electric power condition from the first electric power condition to the second electric power condition before start of the movement of said magnetic flux adjusting member from said first position to said second position.