| 摘要 |
PURPOSE:To obtain a heat roller fixing device with which a substantial nip width is obtd. and which obviates the generation of permanent deformation of the roller by providing an intermediate layer consisting of a formed material made of fine metallic wires around a mandrel of a press-contact roller and providing a surface coating layer having excellent heat resistance and release property on the circumferential surface thereof. CONSTITUTION:The press-contact roller 10 is constituted by coating in adhesive agent on the mandrel 11 made of a metal such as carbon steel, fitting the intermediate member 12 molded preliminarily so as to conform to the mandrel 11 and fitting and adhering a surface coating layer 13 consisting of a fluororesin tube, etc. onto the circumferential surface thereof. The member 12 consists of the fine stainless steel wires which are knitted to hosiery knitting and are formed to a required size by roll forming or press forming. Since the press contact roller has the elasticity of substantially low hardness, the satisfactory nip width is obtainable and the good fixability is obtainable. The roller has substantial heat resistance and elasticity and is therefore free from permanent deformation even at a high temp. or after long-term preservation. |
