| 摘要 |
A heat roller control apparatus having a heat roller for hot melt coating a thin film on a member, a heater for heating the heat roller, temperature detecting member for detecting the surface temperature of the heat roller, temperature control member for controlling the heater according to a temperature detecting signal obtained from the temperature detecting means, and temperature judging member for producing a temperature judging signal for judging the state of the surface temperature of the heat roller according to the temperature detecting signal. The temperature judging member calculates a variation of the surface temperature of the heat roller from the temperature detecting signal every predetermined time and judging the stability of the hot melt coating by the variation of the surface temperature of the heat roller when the temperature detecting signal reaches into a predetermined temperature range.
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