| 摘要 |
PURPOSE:To minimize the noise level by having no oblong for the tip form of a main magnetic pole with different values of thickness set at the center part and the circumference part of the main magnetic pole and having a nonlinear side at the outflow side of a recording medium to obtain the maximum level of the reproduced signal output. CONSTITUTION:In a record mode a side 9 of a main magnetic pole 2 is rectilinear at the inflow side of a recording medium 1 with a side 10 formed in a chevroned shape at the outflow side 11 of the medium, respectively. A magnetization pattern 11 remaining at the medium 1 is also chevroned in accordance with the form of the side 10, and therefore the form of the side 9 of the medium inflow side does not substantially remain as magnetization. The record magnetization remains on a track 111 and a track 112. In a reproduction mode with this head, the side 9 is rectilinear at the medium inflow side. While residual magnetizations 111 and 112 on the tracks are chevroned, and therefore the side 9 covers over plural record bits. Then the change of magnetic flux due to magnetization on the medium 1 is weakened by an azimuth loss and not virtually converted into a reproduction output. |
