A fixing device includes a first rotary member and a second rotary member for pinching and transporting a bearing member for fixing a toner image formed thereon. The first and second rotary members are pressed to each other. At least the first rotary member is provided with a surfacial layer containing...http://www.google.es/patents/US4568275?utm_source=gb-gplus-sharePatente US4568275 - Fixing device and fixing rotary member therefor
