Patent ID: 7953348

Claim:
A fusing device of an image forming apparatus having a cover movable between an open position and a closed position, the cover having a first pressure boss, comprising: a fusing unit having a heating roller and a pressure roller which contact each other and rotate together; and a pressure and release unit, comprising: a first rotational shaft, a first member rotatable about the first rotational shaft and having a first pressuring part that transmits pressure in a direction of the heating roller when the cover is in the closed position and a first pressured part pressured by the cover in the closed position and disposed farther than the first pressuring part from the first rotational shaft, a second rotational shaft, and a second member rotatable about the second rotational shaft and having a second pressure boss pressured by the first pressuring part of the first member in the direction of the heating roller when the cover is in the closed position, wherein the second member supports a rotational shaft of the pressure roller to transmit the pressure received via the second pressure boss to the heating roller, wherein the first pressure boss of the cover transmits the pressure to the first pressured part when the cover is in the closed position.