MATERIAL FOR FIXING ROLLER COVERING TUBE

摘要

PROBLEM TO BE SOLVED: To provide a material for a fixing roller covering tube using a tetrafluoroethylene-perfluoro (alkylvinylether) copolymer and excellent in crack ing resistance by reducing hardness of the tube, following improvement of pic ture quality as a fixing roller and having proper molar weight. SOLUTION: This material for the fixing roller covering tube is constituted of the copolymer having a copolymer composition of tetrafluoro-ethylene of 90-99 mol% and perfluoro (ethylvinylether) of 10-1 mol% and specific melt viscosity of 5×10<3> -50×10<3> kg/m.s (372 deg.C).