Abstract
The fundamental study was performed to investigate the feasibility of multi-track recording. It was confirmed that the side-writing or -erasing effects of a single-pole type perpendicular magnetic head are negligibly small. It was also found that the perpendicular head posesses uniform reproducing sensitivity in trackwidth direction of a main-pole. These results show that perpendicular recording is suitable for multi-track recording and full-track reproducing using multilevel recording.
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