Patent ID: 8626047

Claim:
A fixing device comprising: a fixing belt in an endless form; a fixing roller for suspending the fixing belt; a separating roller for suspending the fixing belt and separating a recording material from the fixing belt; a pressurizing roller for pressing against the fixing roller and the separating roller through the fixing belt to form a fixing nip portion between the fixing belt and the pressurizing roller; a heating roller including: a core metal portion; and a heat source for heating the core metal portion, the heating roller suspending the fixing belt by the core metal portion, and heating the fixing belt; a first lever to which a rotating shaft of the fixing roller and a rotating shaft of the separating roller are fixed, the first lever pivoting around the rotating shaft of the fixing roller used as a first supporting point; a second lever to which the rotating shaft of the fixing roller and a rotating shaft of the heating roller are fixed, the second lever pivoting around the rotating shaft of the fixing roller used as a second supporting point; a first biasing member for biasing the first lever and causing the separating roller to press against the pressurizing roller; and a second biasing member for biasing the second lever and causing the fixing belt to stretch over the heating roller.