1. An image forming apparatus for controlling temperature of a fixing section that fixes a color material on a printing medium, the image forming apparatus comprising: a determination unit configured to determine whether image data is a specific image; and a control unit configured to control the temperature of the fixing section so that the temperature of the fixing section becomes a predetermined temperature in a case where the determination unit determines that the image data is a specific image and control the temperature of the fixing section by using a fixing temperature corresponding to a color material amount obtained from the image data in a case where the determination unit determines that the image data is not a specific image.