Patent ID: 6219522
Filing Date: 2001-04-17
Classification: G03G

Abstract:
A fuser of the type which has a pair of rollers which are arranged so as to be rotatable while being in press contact with each other and which consist of a fixing roller and a pressurizing roller, a recording material having an image which has not undergone fixing being press-conveyed by a pressurizing portion formed by the pair of rollers to effect heat fixing of the image on the recording material, wherein the fixing roller has an elastic layer having a thickness of 1 mm or more and a resin layer having a thickness of 20 .mu.m to 50 .mu.m formed on the surface of the elastic layer by firing, and wherein the coefficient of linear expansion of the elastic layer at 150.degree. C. is not larger than 2.7 times the coefficient of linear expansion of the resin layer at 150.degree. C.