| 摘要 |
PURPOSE:To improve an image quality by preventing an offset, and to make a cleaning of the fixing roller easy by coating a fluorine resin on a core metal which is heat treated at a higher temp. then a baking temp. of said resin, followed by baking the resin and polishing it, and subsequently, rebaking the resin at a temp. higher than that of the m.p. of the fluorine resin. CONSTITUTION:The fluorine resin is coated on the core metal 3 which is carried out an annealing, to form the layer having 15mu thickness. And subsequently, said fluorine resin is baked at 380 deg.C, followed by cooling it. And, the coating and baking of said resin are repeated, and then, the surface of the mother material is effected a buffing to make the surface roughness of said mother material to <=2mu and then, is rebaked to form a surface layer 2. The surface of the mother material is made to a flat by buffing and surface-melting due to the baking. As the annealing is carried out at the higher temp. than the baking temp. of said resin by 20 deg.C, for the longer time than that of the backing period, even in case of repeating the baking of the following step, the strain of the mother material is very reduced. Thus, the image quality is improved by preventing the offset, and the cleaning of the titled roller makes easy. |
