Patent ID: 8909114
Filing Date: 2014-12-09
Classification: G03G

Abstract:
1. An image heating apparatus comprising: a rotatable image heating member configured to heat an image on a recording material; magnetic flux generating means for generating magnetic flux for heating said image heating member; adjusting means for adjusting a magnetic flux distribution so that the magnetic flux acting on an end portion region of said image heating member with respect to a rotational axis direction of said image heating member is decreased; changing means for changing a sheet passing position of the recording material with respect to the rotational axis direction within a set range; and switching means for switching, when said adjusting means is actuated and sheets of the recording material are continuously passed, the set range from a range in which the sheet passing position does not overlap with the end portion region to a range in which the sheet passing position overlaps with the end portion region, wherein said switching means effects switching when the number of sheets subjected to image formation reaches a predetermined value, and wherein the predetermined value when the sheets of the recording material with a first basis weight are passed is smaller than that when the number of sheets subjected to image formation when the sheets of the recording material with a basis weight smaller than the first basis weight are passed.