狭トラック記録におけるヘッドフリンジ磁界の影響

抄録

Side-fringe-field effects on track edge phenomena for heads with different pole shapes were evaluated. Written tracks were partially dc-erased from both track edges, and the changes in the residual track output were measured. The erased track widths were also observed by the Bitter method. It was found that the fringe field width of recording heads strongly depends on the pole shape and that the trimming of recording head poles is very effective for reducing head-fringe-field effects. Writing misregistration capability was also evaluated through off-track overwrite measurement.