When fixing a toner image formed by using a developing agent containing a
fine particle toner to easily enter into the ruggedness of a sheet, a web
wound around on a pair of rollers so as to be taken out from one of the
rollers to the other roller so that a part of the taken out surface can be
contacted with a member which heats and fuses the toner. The web has a
configuration for controlling the taking out amount according to the
surface state of the sheet for supporting the toner image and the toner
use amount so that the offset can certainly be prevented when a small
particle size toner is used.