| 摘要 |
PURPOSE:To execute enough recording to the lower layer of a magnetic layer, and to execute satisfactorily the high density recording by containing a barium ferrite magnetic powder in the magnetic layer, and recording and reproducing a magnetic recording medium for vertical magnetic recording use, which has been oriented so that a direction of its magnetic anisotropy becomes a vertical direction to the magnetic layer surface, by a ring-shaped magnetic head. CONSTITUTION:A ring-shaped magnetic head A is constituted by winding and installing an energizing coil 3 and 4 to a core half body 1 and 2. A laminated layer magnetic film 5 and 6 which have been stuck to an operating gap 7 side of the core half body 1 and 2 are constituted by laminating alternately magnetic films 5a, 6a and non- magnetic films 5b, 6b to a multilayer. Also, it is desirable that the magnetic films 5a, 6a of the laminated layer magnetic film 5 and 6 which have been stuch in the vicinity of the operating gap 7 of the ring-shaped magnetic head A are constituted of a soft magnetic material having a high saturation magnetic flux density of >=6,000 gauss saturation magnetic flux density. When a vertical magnetic recording use magnetic recording medium which has used a barium ferrite magnetic powder is recorded and reproduced by using the ring-shaped magnetic head A which has been constituted in this way, a high density recording can be executed satisfactorily, and a high output is obtained. |
