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1. An image heating apparatus comprising:
a rotatable heating member configured to heat a toner image on a sheet at a nip; a driving mechanism configured to drive said rotatable heating member; a rotatable pressing member configured to form the nip in press-contact with said rotatable heating member while being rotated by rotation of said rotatable heating member; a first contact-and-separation mechanism configured to move said rotatable pressing roller toward and away from said rotatable heating member; a rotatable externally-heating member provided outside said rotatable heating member and configured to heat said rotatable heating member in press-contact with said rotatable heating member while being rotated by rotation of said rotatable heating member; a second contact-and-separation mechanism configured to move said rotatable externally-heating member toward and away from said rotatable heating member; a detecting portion configured to detect information corresponding to a drive load exerted on said driving mechanism; and a controller configured to actuate, when the information is detected by said detecting portion, said driving mechanism for a predetermined time in a state in which said rotatable externally-heating member is press-contacted to said rotatable heating member and in which said rotatable pressing member is spaced from said rotatable heating member, wherein said controller controls, depending on an output of said detecting portion, whether or not image heating is prohibited.
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