Patent ID: 7933543

Claim:
A full color image forming apparatus for forming a color toner image on a recording material, comprising: an image forming portion for forming a full color toner image on a recording material, the image forming portion having a plurality of image forming stations; and a fixing portion that heats and fixes the toner image formed on the recording material to the recording material, wherein said image forming apparatus is capable of setting a cleaning mode for cleaning the fixing portion, and when the cleaning mode is set, at least two image forming stations among the plurality of image forming stations form a predetermined toner image on the recording material, and then the fixing portion heats and fixes the predetermined toner image to the recording material to form a cleaning sheet which is heated and conveyed at the fixing portion to clean the fixing portion, and wherein a toner amount per unit area to form the predetermined toner image on the recording material is larger than a maximum amount of toner per unit area in which the toner is borne on the recording material in a case where a normal black toner image is formed by only using an image forming station for a black color among the plurality of image forming stations.