| 摘要 |
PURPOSE:To make a titled roller highly resistant to scratching and to form the roller which can maintain good elasticity by calcining and coating a specifically composed fluororesin compsn. on a silicon base layer. CONSTITUTION:The fluororesin compsn. of which 50-95pts. out of 100pts. consists of tetrafluoroethylene or hexafluoropropylene copolymer FEP and the balance consists of a tetrafluoroethylene polymer PTFE is calcined and coated at 270-310 deg.C on a base layer 2 consisting of silicon rubber molded and coated on a mandrel 1 of a specified diameter and having a specified thickness. The peripheral surface is polished and a front layer 3 of the fluororesin having a specified thickness is coated and formed on the layer 2. As a result, the roller softens hardly in spite of heating in the stage of toner fixing and is resistant to scratching. Since the layer 2 does not deteriorate, the satisfactory elasticity is maintained without being spoiled. |
