| 摘要 |
PURPOSE:To control the waveform distortion of a data signal and to prevent a servo signal from being erased by setting the holding force of a data signal recording layer at specific times that 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 he 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 0.6-0.9 times that of the servo signal recording layer 2. Thereby, the leakage flux of the servo signal can be reduced, and the partial lowering of the output of the data signal due to the influence of the servo signal can be reduced. In such a way, the waveform distortion of the output of the data signal can be suppressed, and also, it is possible to prevent the servo signal from being erased. |
