| 摘要 |
<p>PURPOSE:To prevent the dewing to a tape guide member by selecting the heat capability of an electric heater so that the temperature rise of the tape guide member per unit time is larger than the temperature rise in a cabin of an automobile in applying the heater of the automobile. CONSTITUTION:In turning on a switch 13, a fan driving circuit 15 is connected to a battery 14 and activated, a fan 16 is driven, a hot air 18 taking an engine 17 as a heat source blows into the cabin 3 to be heated and the temperature in the cabin 3 is raised. When the temperature rise in the cabin 3 by the cabin heater 19 is DELTAT1 per unit time, the heat capacity of the electric heaters 10-12 depends on the voltage of the heater itself and the battery 14 and is decided so that the temperature rise DELTAT2 of a guide drum 7 and guide poles 8, 9 is larger than the rise DELTAT1. That is, the specifications of the electric heaters 10-12 are decided to be (DELTAT2/DELTAT1)>1. Thus, the dewing of the guide drum 7 and the guide poles 8, 9 is prevented.</p> |
