| 摘要 |
PURPOSE:To provide a heating roller which is short in heating up time, high in energy efficiency and excellent in durability. CONSTITUTION:This heating roller is obtd. by forming a resistance heating film on the surface of a cylindrical roller 6 consisting of glass and/or ceramics having a specific heat capacity (specific heat x density) of <=3X10<-3>[J/(mm<3>.K)]. Such heating roller includes a heating roller produced by forming the resistance heating film 7 directly on the surface of the cylindrical roller 6 which is a base material and a heating roller produced by forming a zinc oxide film 9 or compsn. graded film 10 on the surface of the cylindrical roller 6. The heat resistance and thermal impact resistance are improved if the zinc oxide layer 9 or the compsn. graded film 10 is formed in such a manner. In either structure, the heating roller which is short in the heating up time, high in the energy efficiency and excellent in the durability is obtd. |
