| 摘要 |
PURPOSE:To utilize the self-heating effect of a temperature dependent resistance element and to perform prevention against dewing and dehumidification without requiring any special heat source, by connecting the temperature dependent resistance element to an irradiation lamp used for fixation or exposure. CONSTITUTION:An electronic copying machine includes thermistors 2 on the surfaces of the 1st and the 2nd mirrors and under a form tray 9. Then, those thermistors are connected in series with a light source 5 for exposure or a halogen lamp 1 used as a heat source 6. The 1st mirror 11 and the 2nd mirror 13 are warmed up by the heat generation effect of the thermistors, so dew drops are prevented from being formed on the surface of the 1st mirror 11 and the 2nd mirror 13. Further, the thermistor 2 arranged under the form tray 9 serves to dehumidify forms. |
