| http://www.w3.org/ns/prov#value | - The fixing roller comprises a hollow core bar (or cylinder) formed of a metal such as aluminum and iron, and a layer of a material having good releasability such as silicone rubber and fluorine-containing resin including polytetrafluoroethylene (PTFE), tetrafluoroethylenefluoroalkoxyethylene copolymer (PFA), etc., which covers the core bar.
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