Image heating apparatus

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 moving mechanism configured to move said rotatable pressing roller so that said rotatable pressing member is movable to a first position wherein said rotatable pressing member is press-contacted to said rotatable heating member and a second position where said rotatable pressing member is spaced 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 moving mechanism configured to move said rotatable externally-heating member so that said rotatable externally-heating member is movable to a third position where said rotatable externally-heating member is press-contacted to said rotatable heating member and a fourth position where said rotatable externally-heating member is spaced from said rotatable heating member;
• an executing portion configured to execute an operation in a mode in which said driving mechanism is operated for a predetermined time in a state in which said rotatable pressing member is located in the second position and in which said rotatable externally-heating member is located in the third position;
• a detecting portion configured to detect information corresponding to a drive load exerted on said driving mechanism;
• and
• a sending portion configured to send, depending on an output of said detecting portion, a signal for notifying that said externally-heating member causes abnormal rotation.