Patent ID: 8725019
Filing Date: 2014-05-13
Classification: G03G

Abstract:
1. A fixing device, comprising: a heat roller having a surface thereof subjected to heating; a heater disposed in the heat roller to heat the surface of the heat roller to an adjustable, heating temperature; a fuser roller disposed parallel to the heat roller and having a surface thereof formed of elastic material deposited on a cylindrical metal core; an endless, fuser belt looped for rotation around the fuser roller and the heat roller; a pressure roller disposed opposite the fuser roller with the fuser belt interposed between the pressure roller and the fuser roller, the pressure roller pressing against the fuser roller via the fuser belt to form a fixing nip therebetween, through which a recording medium is conveyed under heat and pressure as the fuser roller and the pressure roller rotate together; a first thermometer disposed adjacent to the cylindrical core of the fuser roller to detect a first temperature directly at the cylindrical core of the fuser roller; and a controller operatively connected with the heater and the first thermometer to adjust the heating temperature according to the first temperature being detected.