Patent ID: 9207593
Filing Date: 2015-12-08
Classification: G03G

Abstract:
1. An image heating apparatus comprising: an image heating member configured to heat an image on a recording medium; an image heating temperature detecting member detecting a surface temperature of the image heating member in contact with the image to be heated; a first temperature adjustment portion adjusting the surface temperature of the image heating member from inside of the image heating member; a second temperature adjustment portion adjusting the surface temperature of the image heating member from outside of the image heating member; and a control portion controlling the first and second temperature adjustment portions and configured to execute a temperature adjustment Down preliminary control operation in the middle of heating of a plurality of first recording media in a case of heating a second recording medium whose basis weight is smaller than that of a first recording medium of the plurality of the first recording media in succession after heating the plurality of first recording media, the control portion executing the temperature adjustment Down preliminary control operation, while maintaining a setting of a target temperature of the surface temperature detected by the image heating temperature detecting member at a target temperature corresponding to the first recording medium, by reducing the quantity of heat supplied from the first temperature adjustment portion to the image heating member and by controlling the second temperature adjustment portion such that the surface temperature detected by the image heating temperature detecting member is adjusted to the target temperature corresponding to the first recording medium.