| 摘要 |
PURPOSE:To keep a prescribed gap between a head and a recording face of a disk by recording a dummy data or a data on nearly the entire face of the recording face of the disk in advance as a fine magnet array and using the Meisner effect of a superconductor. CONSTITUTION:A dummy data writer 31 is used to write a dummy data on a black disk 21 whose recording face 21a has no data written in a following manner. After the disk 21 is loaded, a motor 31 drives the disk 21 to float a head 36 from the recording face 21a by a prescribed gap. The dummy data is written as a magnet string 21b on the entire recording face 21a by using the head 36. Then the writer 31 is removed, Magnetic lines are generated near the surface of the recording face 21a by the magnet string 21b. When the disk 21 is used, it is possible to part the head from the recording face of the disk to keep a prescribed interval by utilizing the Meisner effect of the superconductor. Moreover, a data can be written in place of the dummy data. |
