| 摘要 |
PURPOSE:To improve release characteristic and durability by using rollers each having >=2 layers of elastic layers on a mandrel and a surface layer consisting of a fluororesin thereon in which the elastic material layers nearer the mandrel have the smaller rubber hardness. CONSTITUTION:The heating roller 1 consists of the constitution in which the low-hardness elastic layer 1b is provided on the mandrel 1a holding internally a halogen heater and the high-hardness layer 1c is provided thereon and further the surface layer 1d consisting of the fluororesin such as polytetrafluoroethylene is provided thereon. The heating roller 2 consists also of the constitution in which the low-hardness elastic layer 2b is provided on the mandrel 2a and the high-hardness elastic layer 2c thereon and further the surface layer 2d consisting of the fluororesin such as polytetrafluoroethylene is provided thereon. The durability of he rollers is improved and the generation of cracking and offsetting is eliminated by using the rollers each having the surface layer consisting of the fluororesin and the elastic material layers having he smaller rubber hardness nearer the mandrel under said layer. The stable and satisfactory fixing is thus made possible. |
