Fixing apparatus and image processing apparatus

An image processing apparatus, comprising a fixing apparatus, wherein the fixing apparatus comprises:

• a rotating body configured to convey a sheet in a first direction by rotating;
• a first heating section configured to heat the rotating body and in which a calorific value per unit length in a second direction orthogonal to the first direction, at the center of the first heating section in the second direction is larger than that at both ends of the first heating section in the second direction;
• a second heating section configured to heat the rotating body and in which a calorific value per unit length in the second direction, at both ends of the second heating section in the second direction is larger than that at the center of the second heating section in the second direction;
• a first temperature detector configured to detect a temperature of a central part of a heating area of the rotating body in the second direction, that is heated by at least one of the first heating section and the second heating section;
• a second temperature detector configured to detect a temperature outside of the heating area of the rotating body in the second direction;
• and
• a fixing controller configured to perform an out-of-area temperature control to drive the second heating section to heat the rotating body in a case where the temperature detected by the second temperature detector is lower than a first temperature threshold value, and drive the first heating section to heat the rotating body in a case where the temperature detected by the second temperature detector is equal to or higher than the first temperature threshold value at the time the temperature detected by the first temperature detector is equal to or lower than a predetermined internal temperature threshold value.