1990 年 14 巻 2 号 p. 127-130
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.