| 摘要 |
<p>PURPOSE:To prevent both a recording medium and a shutter from being damaged by contact between them by controlling the operation of the shutter by a solenoid, for which turn control can be freely executed, when the shutter is opened and closed. CONSTITUTION:When a solenoid 8 is turned in the direction of an arrow A, an arm 9 and a groove part 10 are also turned and a pin 7 to be loosely inserted into the groove part 10 is simultaneously moved as well. However, because of difference in the center of the turn with the groove part 10, the pin 7 is moved in the groove part 10 with a supporting point 5 as the turning center and a shutter 4 is hung up. Then, a medium entrance / exit 3 is opened and a medium 1 is inserted to the internal part of a device. When the medium 1 is inserted, the current impression of the solenoid 8 is interrupted according to an instruction to complete the insertion and returning operation is started. Then, the solenoid 8 is rotated in a direction reverse to the arrow A and the shutter 4 is pushed down. Afterwards, the medium entrance / exit 3 is sealed. Thus, since any contact is not generated between the recording medium 1 and shutter 4, both the medium and shutter are not damaged.</p> |
