| 摘要 |
PROBLEM TO BE SOLVED: To increase a storage capacity and to stably and surely perform recording and reproducing. SOLUTION: A magnetic disk assemblage 11 disposed with plural magnetic disks at prescribed intervals at the same revolving shaft is made freely movable with respect to a magnetic head 13 by a screw haft 18. As a result, the magnetic disk 10 to be recorded and reproduced is selectively disposed to face the magnetic head 13.
|
