| 摘要 |
PURPOSE:To protect surely a magnetic head by bringing a contactor into contact with a magnetic disc after a shutter is opened surely in loading a disc cassette and ejecting the cassette after the contactor is detached from the magnetic disc in ejecting the cassette. CONSTITUTION:In loading a disc cassette 1 to a cassette holder 31, an ejection lever 34 is pushed by the front ridge of a hard case 2 and turned and the shutter 7 is opened fro the opening section in the process. When the shutter 7 is opened, since a contact part 47 is escaped to a recessed part 5 of the case 2, the cassette is loaded up to a prescribed depth on the case 2, the case 2 presses a receiving part 43 to turn the detection lever 22. Thus, a cassette guide 27 slides in the opposite direction to the loading direction of the cassette 1. Through the operation above, the magnetic disc 3 is connected to a driveshaft 11 and the magnetic head 12 and a contactor 16 contact the disc 3. In ejecting the cassette 1, the guide 27 is pushed in to float the holder 31 from the shaft 11 and an arm 19. On the other hand, the lever 22 is turned to escape a lock 44 and a lever 34 ejects the cassette 1. |
