| 摘要 |
A heat fixing device for use in a copying apparatus, including a heating roller, a pressing roller, an ambient temperature sensor for detecting ambient temperature of the copying apparatus, a decision device for making a decision as to whether or not the ambient temperature is not more than a predetermined temperature, and an intermittent drive device for intermittently driving the heating roller and the pressing roller in a waiting mode of the copying apparatus when the ambient temperature is not more than the predetermined temperature.
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