| 摘要 |
PURPOSE:To inhibit the idle rotation of a heat roller by connecting the normally closed contact of a subdoor switch to the normally opened contact of a main door switche in parallel, and even if an electric power supply circuit is disconnected by opening the main door, connecting the power supply circuit by opening the subdoor. CONSTITUTION:The normally opened contacts of the main door switches SW2, SW3 to be actuated on the basis of the opening/closing of the main doors 2, 3 fitted to the body of the titled device are connected to the power supply circuit. The subdoor covering an adjusting board providing an operation switching means is made to operate while the main door is opened. The normally closed contact of the subdoor switch to be actuated on the basis of the opening/closing of the subdoor is connected to the normally opened contact of the main door switch SW3 in parallel. Consequently, the main doors are opened, and even if the power supply circuit is disconnected, the power supply circuit is connected by opening the subdoor. Therefore, it is unnecessary for a service man to carry tools to be exclusively used for the connection of power supply. In addition, the idle rotation of the heat roller is inhibited to secure the safeness of the service man. |
