| 摘要 |
PURPOSE: To provide a high capacity magnetic disk with recording capacity of IGB or above. CONSTITUTION: This disk is the magnetic disk having a servo pit part formed on a non-magnetic substrate 1 as an irregular pattern. The rise angle and the fall angle of the projecting part 3 of the servo pit part are made 45 deg.-90 deg., and further, pulse interval of a servo signal regenerated from the servo pit part is controlled to 0. 4μm or below. Thus, the servo signal is regenerated in a high output and a high S/N ratio while increasing the linear density of the servo pit part.
|
