发明名称 |
Recording head with dual coil/dual shield arrangement and high frequency oscillator |
摘要 |
According to one embodiment, a recording head includes a main pole, a trailing shield including a first connecting portion and a second connecting portion, and configured to form together with the main pole a first magnetic core, a leading shield including a first connecting portion connected to the main pole through a magnetic material and an end portion opposing to the end portion of the main pole through a non-magnetic material, and configured to form together with the main pole a second magnetic core, and first and second coils wound around the first and second magnetic cores, and a connection terminal configured to flow a current through the main pole, non-magnetic conductive layer, and trailing shield. |
申请公布号 |
US9208800(B2) |
申请公布日期 |
2015.12.08 |
申请号 |
US201414340979 |
申请日期 |
2014.07.25 |
申请人 |
Kabushiki Kaisha Toshiba |
发明人 |
Taguchi Tomoko;Tomoda Yusuke |
分类号 |
G11B5/17;G11B5/11;G11B5/235;G11B5/31;G11B5/127;G11B19/247;G11B5/00 |
主分类号 |
G11B5/17 |
代理机构 |
Patterson & Sheridan, LLP |
代理人 |
Patterson & Sheridan, LLP |
主权项 |
1. A recording head comprising:
a main pole configured to apply a recording magnetic field to a recording medium; a first magnetic pole comprising a first connecting portion connected to the main pole through a non-conductor and a second connecting portion connected to the main pole at the recording medium side through a non-magnetic conductive material, and configured to form together with the main pole a first magnetic core; a first coil wound around the first magnetic core; a second magnetic pole on a side of the main pole opposite to the first magnetic core, comprising a first portion extending in parallel to the main pole, a second portion extending from the first portion to the main pole along the recording medium side, and a third connecting portion connected to the first portion and the main pole through a magnetic material, the second magnetic pole further comprising a first surface exposed on a medium facing surface and a second surface facing the main pole at the recording medium side through a non-magnetic material disposed in a gap therebetween, and configured to form together with the main pole a second magnetic core; and a second coil wound around the second magnetic core. |
地址 |
Tokyo JP |