| http://www.w3.org/ns/prov#value | - The fixing device is provided with a temperature sensor G for detecting the surface temperature of the heat-fixing roller 1 so as to maintain the surface temperature at an optimum temperature to fuse the toner, 160???-200??? C., for example and is also provided with an off-set preventing liquid applying and cleaning means C for applying off-set preventing liquid such as silicone oil or the like on
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