Patent ID: 8131197

Claim:
A fixing device, comprising: a heating roller that generates heat and has a mold releasing property; a pressure belt that is brought into contact with the heating roller to form a nip therebetween and is driven according to a rotation of the heating roller; a pressure roller around which the pressure belt is surrounded; an arm that holds an end of the pressure roller and presses the pressure roller to press the pressure belt toward the heating roller; and a belt regulating member that swingably intervenes between the pressure belt and the arm and contacts an end face of the pressure belt to regulate a shift thereof, wherein the arm comprises a first surface which faces toward the belt regulating member, and the belt regulating member comprises a second surface which faces toward the arm, and wherein a protrusion is formed on at least one of the first and second surfaces such that the belt regulating member is inclined with respect to the arm, to thereby push a contact point between the belt regulating member and the end face of the pressure belt away from the nip.