| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a non-contact type temperature sensor which measures the surface temperature of a heat roll of a heat fixing system, to stably measure the temperature without exceeding a permissible heat-resistant temperature or a heat resistant temperature due to the heat of the heat roll. <P>SOLUTION: For measuring a quantity of infrared light on the surface of a heat roll 1, the non-contact type temperature sensor 6 is not disposed on the center axis of an infrared light quantity measurement hole 5 made in a housing 3. This prevents the non-contact type temperature sensor 6 from being directly exposed to the heat of the heat roll 1. <P>COPYRIGHT: (C)2008,JPO&INPIT |
