| 摘要 |
<p>PURPOSE: To provide superior dustproof by simply and compactly constituting the device and surely hermetically sealing an optical information recording medium. CONSTITUTION: Upon completion of inserting a cartridge, by rotation of a motor 31, a spindle base 3 is pushed upward by a pin 29, and the spindle base 3 is rotated clockwise around a turning shaft 27, and hence a magneto-optical disk is caught by a spindle motor 2. Consequently, a packing 16 on the spindle side is brought into close contact with the cartridge. A coil base plate 10 is drawn to the rear side of the device by a bearing part 19 of the spindle base 3, and by a pin 42 of a side yoke 41 of a bias coil 8 and an inclined groove 43 of the coil base plate 10, the coil base plate 10 is lowered, and a packing 11 on the bias side is brought into close contact with the cartridge. Under this state, information can be recorded and reproduced on the magneto-optical disk.</p> |
