| 摘要 |
PURPOSE:To improve the reliability of switching operation and to miniaturize an entire device by constituting a safety switch mechanism with an optical switch and a mechanical switch for reflecting factor control. CONSTITUTION:The optical switch 33 consisting of an LED 33a generating light L in the direction of a cassette magnetic bubble memory device 1 and a PHTR33b receiving its reflected light L' are arranged fixedly to the prescribed position of the device main body 10, and a slide switch 32' having a function in common controlling the reflecting factor of the LED 33a is provided onto the device 1 corresponding to the switch 33 to constitute the safety switch mechanism 30. In setting a slider 32a' to the direction C, the light L from the LED 33a is reflected on the mirror surface of the bottom D of a groove, its reflected light L' is received by the PHTR33b to conduct the switch 33. |
