Patent ID: 7433638

Claim:
A fixing device for fusing and fixing an unfixed developer onto a recording medium, comprising: fixing rollers which form a pair of rotators, a recording medium which has an image of an unfixed developer thereon being passed through a pressure-contact section formed by the fixing rollers; a belt-shaped cleaning member provided so as to contact at least either one of fixing rollers, for cleaning a surface of the fixing roller; a pressure-contact roller provided so as to press the cleaning member against the fixing roller which is in contact with the cleaning member, and form a nip section serving as a pressing portion; a feeding roller for feeding the belt-shaped cleaning member which has been rolled up; a winding roller for taking up the cleaning member which has been fed from the feeding roller and cleaned the surface of the fixing roller; a first guide roller provided between the pressure-contact roller and the winding roller so as to contact the cleaning member, a second guide roller provided between the feeding roller and the pressure-contact roller so as to contact the cleaning member; control means for controlling rotary operation of the feeding roller and winding roller so that a sum of a feed amount of the cleaning member which is fed by the feeding roller at one feeding occasion, and a take-up amount of the cleaning member which is taken up by the winding roller at one take-up occasion, is equal to or more than a double of a length of the nip section in a circumferential direction of the pressure-contact roller; and developer removing means for removing a developer existent on a surface of a surface of a to-be-taken-up cleaning member provided on a periphery of the winding roller.