| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fixing device whose rise up speed is high by securing the stable conduction between the heating resistor layer of a fixing roller and an electrode member while reducing a current consumption. SOLUTION: The device is provided with a fixing roller 100 with the heating resistor layer 103 which is installed inside a cylindrical core bar 101 through an insulating layer 102. Conductive ring-like electrode members 301A and 301B are arranged inside the core bar 101 so that the members may be enlarged in the radial direction and also they may come into contact with the heating resistor layer, and the electrode members are separately enlarged by enlargement mechanisms 300A and 300B, then, the electrode members are brought into press contact with the layer 103 and fixed to the layer 103 without using adhesive agent.
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