PURPOSE: To enhance the accuracy of a system detecting the temperature of the required part of a device and controlling the device by making a temperature detection element arranged in the device of a metal.
CONSTITUTION: An E type core material 1 being as a magnetic field generation means and an exciting coil 2 wound round the core material 1 are a long sideways member obtained by defining a direction crossed(orthogonally crossed) to the carrying(moving) direction of a film 5 and a material to be recorded(material to be heated) P as a longitudinal direction. Then, the temperature of the film 5 being the heating member is measured by the temperature detection element 7. Based on the measured temperature, the excitation circuit 10 of an exciting coil 2 is controlled by a regulator 11 and the value of a current impressed on the coil 2 is controlled. Then, the temperature(fixing temperature) of the film 5 is precisely controlled. In such a case, the element 7 detecting the surface temperature of the film 5 is a thermoelectric couple being as the metallic temperature detection element. Such a thermoelectric couple is used because the calorific capacity thereof is small, the heat conductivity thereof is excellent and it can be closely brought into contact with the film 5 by utilizing the spring property of the metal itself.
TAKANO MANABU
ABE TOKUYOSHI
TOMOYUKI YOJI
FUKUZAWA DAIZO
OGAWA KENICHI
