| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic disk device capable of realizing the data reproducing operation having a low error rate by allowing to secure the high quality reproducing signal in the magnetic disk device applying the perpendicular magnetic recording method. SOLUTION: In a disk drive applying the perpendicular magnetic recording method, a data channel 1 is publicized which is provided with a noise removing circuit 2 for extracting the high quality reproducing signal by removing the noise coming from the fringe magnetizing area from a mixed reproducing signal read out from a read head element 31. The noise removing circuit 2 is provided with a circuit capable of offsetting the noise, having the delay time corresponded to the length of the recording gap of a write head element 30 while having the polarity opposite to the data magnetizing polarity, then the noise reproduced from the fringe magnetizing area is removed from the mixed reproducing signal.
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