| 摘要 |
This image heating device comprises: an endless belt for heating a toner image on a sheet; a first detector for detecting a temperature at one end of the endless belt along the longitudinal direction; a second detector for detecting a temperature at the other end of the endless belt along the longitudinal direction; and a control unit for controlling whether or not to issue an alert regarding the occurrence of an error on the basis of amount of change per unit time in the detected temperature difference of the first detector and the second detector. |
