发明授权
- 专利标题： Magnetic head for perpendicular magnetic recording having a return path section
- 专利标题（中）： 具有返回路径部分的垂直磁记录用磁头
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申请号： US13713778申请日： 2012-12-13
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公开(公告)号： US08482879B1公开(公告)日： 2013-07-09
- 发明人: Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Tatsuya Shimizu
- 申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Tatsuya Shimizu
- 申请人地址： US CA Milpitas CN Hong Kong
- 专利权人： Headway Technologies, Inc.,SAE Magnetics (H.K.) Ltd.
- 当前专利权人： Headway Technologies, Inc.,SAE Magnetics (H.K.) Ltd.
- 当前专利权人地址： US CA Milpitas CN Hong Kong
- 代理机构： Oliff & Berridge, PLC
- 主分类号： G11B5/127
- IPC分类号： G11B5/127 ; G11B5/17
摘要：
A magnetic head includes a coil, a main pole, and a return path section. The return path section includes a plurality of magnetic path portions that separate a magnetic flux into a plurality of fluxes and allow the fluxes to pass therethrough in parallel. The coil includes a winding portion disposed around an assemblage of the plurality of magnetic path portions. In any cross section that intersects all of the plurality of magnetic path portions, the distance between two adjacent magnetic path portions is smaller than the minimum width of each of the two adjacent magnetic path portions, and only a nonmagnetic layer is present between the two adjacent magnetic path portions.
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