Patent ID: 8811877

Claim:
A fusing device comprising: a fusing belt formed as a closed loop; a magnetic flux generator disposed outside the fusing belt to emit magnetic flux for induction heating of the fusing belt; a first fusing roller and a second fusing roller that are disposed in parallel with each other inside the fusing belt and support the fusing belt; a nip guide located between the first fusing roller and the second fusing roller; and a compressing roller disposed on an outer portion of the fusing belt for compressing against the first and second fusing rollers and the nip guide to form nips on portions of the fusing belt, wherein the magnetic flux generator includes a coil wound along a length direction of the first and second fusing rollers, and a cross-section of the coil is curved along an outer circumference of the fusing belt with respect to the first fusing roller and with respect to the second fusing roller.