摘要 |
PROBLEM TO BE SOLVED: To provide a thermal developing device having superior reproducibility and stability, that concentration is automatically compensated according to environment and. SOLUTION: Relating to this image forming device, a most appropriate temperature is calculated again to be higher by a temperature adjustment device 102, a heater 100 is controlled and a thermal developing drum 84 is heated automatically until its temperature reaches the newly calculated most appropriate temperature when the temperature and humidity of the image forming device is lowered and the lowering of the temperature and humidity is detected by a temperature sensor 36A and a humidity sensor 36B. Furthermore, the most appropriate temperature is calculated again to be lower by the temperature adjustment device 102 when the temperature and humidity inside the image forming device is risen and the rising of the temperature and the humidity is detected by the temperature sensor 36A and the humidity sensor 36B and the control is carried out to lower the temperature of the thermal developing drum 84 to the newly calculated most appropriate temperature.
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