| 摘要 |
PURPOSE:To reduce the distortion of a data signal and to obtain the satisfactory output of a servo signal by setting the holding force of a data signal recording layer at specific times the residual flux density of a servo signal recording layer. CONSTITUTION:In a magnetic disk where the servo signal recording layer 2 in which the servo signal for positioning a head is recorded is formed on a base 1 and the data signal recording layer 3 in which the data signal is recorded on the servo signal recording layer 2 is formed, the holding force of the data signal recording layer 3 is set at 0.7-1.0 times the residual flux density of the servo signal recording layer 2. Thereby, it is possible to reduce the leakage flux of the servo signal and to suppress the partial reduction (distortion) of the output of the data signal due to the influence of the servo signal. In such a way, the distortion of the data signal can be suppressed at minimum and the satisfactory output of the servo signal can be obtained. |
