| http://www.w3.org/ns/prov#value | - For fixing roller 220, for example, solid mandrel 220a made of a metal such as iron is covered by heat-resistant silicon rubber 220b (JIS-A hardness: 5 [??]) which has a thickness of 20 [mm] and serves as an elastic layer of a surface layer section, and further, covered by a coating resin layer made of a PTFE resin, which is a low-friction and heat-resistant resin, having a thickness of 30 [??m].
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