Patent ID: 8655245

Claim:
A fusing device comprising: a fusing belt; a pressure roller disposed to face the fusing belt and serving to press a recording medium onto the fusing belt; a nip forming member to support an inner surface of the fusing belt so as to form a fusing nip along with the pressure roller; and a heat source disposed inside the fusing belt to simultaneously apply radiant heat to the fusing belt and the nip forming member, wherein the nip forming member includes a first surface provided upstream in a movement direction of the recording medium and configured to ascend toward the pressure roller in the movement direction of the recording medium, a second surface provided downstream in the movement direction of the recording medium and configured to descend away from the pressure roller in the movement direction of the recording medium, and a hill portion formed at a boundary between the first surface and the second surface, and wherein the hill portion is located to one side of the nip forming member farther downstream in the movement direction of the recording medium and directly pressed by the pressure roller.