公开(公告)号：US20170148471A1

公开(公告)日：2017-05-25

申请号：US14950938

申请日：2015-11-24

Applicant: HGST Netherlands B.V.

Inventor： Satoshi Tabata ,  Atsushi Yamada ,  Michiya Kazusawa ,  Masato Shiimoto

IPC: G11B5/09

CPC classification number: G11B20/10009 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/235 ,  G11B5/3153 ,  G11B5/40 ,  G11B5/465 ,  G11B2005/0024

Abstract: A magnetic recording system for preventing data loss resulting magnetic oscillator current. The magnetic recording system includes a magnetic write head with a magnetic write pole, a magnetic oscillator near the magnetic write pole, and a write coil for magnetizing the write pole. Circuitry is connected with the magnetic write coil to supply a current to the write coil and connected with the magnetic oscillator to supply a current to the magnetic oscillator. The circuitry is configured to ensure that the current to the magnetic oscillator does not inadvertently magnetize the write pole after the magnetic write pole has demagnetized.

公开(公告)号：US09263086B2

公开(公告)日：2016-02-16

申请号：US14227933

申请日：2014-03-27

Applicant: HGST Netherlands B.V.

Inventor： Satoshi Tabata ,  Norifumi Miyamoto ,  Akira Morinaga ,  Masahiro Ito ,  Masahiko Hatatani

IPC: G11B11/00 ,  G11B20/10 ,  G11B5/11 ,  G11B5/00

CPC classification number: G11B20/10212 ,  G11B5/11 ,  G11B5/315 ,  G11B5/465 ,  G11B5/54 ,  G11B2005/0021

Abstract: A hard disk drive (HDD) is described which includes a magnetic field-generating device in the vicinity of a load/unload ramp such that the write head moves into a magnetic field generated by the device while the head is being unloaded from disk, whereby the magnetic field pins in a predominant direction the direction of magnetization of a magnetic shield associated with the write head, and away from the direction toward the disk. Recording magnetic field leakage associated with the shield is thereby suppressed and corresponding far track interference is inhibited.

Abstract translation: 描述了一种硬盘驱动器（HDD），其包括在加载/卸载斜坡附近的磁场产生装置，使得当磁头从磁盘卸载时，写入头移动到由装置产生的磁场中，由此 磁场引脚在主要方向上与写头相关联的磁屏蔽的磁化方向，并远离朝向盘的方向。 因此，与屏蔽相关的记录磁场泄漏被抑制，并且相应的远场干扰被抑制。

公开(公告)号：US20150279416A1

公开(公告)日：2015-10-01

申请号：US14227933

申请日：2014-03-27

Applicant: HGST Netherlands B.V.

Inventor： Satoshi Tabata ,  Norifumi Miyamoto ,  Akira Morinaga ,  Masahiro Ito ,  Masahiko Hatatani

IPC: G11B20/10 ,  G11B5/11

CPC classification number: G11B20/10212 ,  G11B5/11 ,  G11B5/315 ,  G11B5/465 ,  G11B5/54 ,  G11B2005/0021

Abstract: A hard disk drive (HDD) is described which includes a magnetic field-generating device in the vicinity of a load/unload ramp such that the write head moves into a magnetic field generated by the device while the head is being unloaded from disk, whereby the magnetic field pins in a predominant direction the direction of magnetization of a magnetic shield associated with the write head, and away from the direction toward the disk. Recording magnetic field leakage associated with the shield is thereby suppressed and corresponding far track interference is inhibited.

Abstract translation: 描述了一种硬盘驱动器（HDD），其包括在加载/卸载斜坡附近的磁场产生装置，使得当磁头从磁盘卸载时，写入头移动到由装置产生的磁场中，由此 磁场引脚在主要方向上与写头相关联的磁屏蔽的磁化方向，并远离朝向盘的方向。 因此，与屏蔽相关的记录磁场泄漏被抑制，并且相应的远场干扰被抑制。