| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a sagging due to the difference of carrying linear velocity caused by temperature change between a fixing unit and a paper ejection roller, or the like with a simple constitution. SOLUTION: The thermal expansion itself of the paper ejection roller 35 is restrained to suppress the occurrence of the difference of the carrying linear velocity. The roller 35 is constituted of a rotary shaft 70 made of a synthetic resin and plural roller parts 72. The roller part 72 is constituted of a base part 74 integrally molded on the rotary shaft 70 and an elastic body 76 with which the surface of the base part 74 is coated by injection molding. The base part 74 is formed of material whose thermal expansion coefficient is smaller than that of the elastic body 76.</p> |
