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1. 发明授权

US08169741B2 Perpendicular magnetic recording head with side shield and magnetic disk apparatus 有权
标题翻译：垂直磁记录头带侧面屏蔽和磁盘设备
公开(公告)号：US08169741B2
公开(公告)日：2012-05-01
申请号：US11797447
申请日：2007-05-03
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
IPC分类号： G11B5/127
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译：根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽，轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。

2. 发明授权

US08315015B2 Perpendicular magnetic recording head provided with side shield and magnetic disk apparatus using the same 有权
标题翻译：具有侧面屏蔽的垂直磁记录头和使用其的磁盘装置
公开(公告)号：US08315015B2
公开(公告)日：2012-11-20
申请号：US13431004
申请日：2012-03-27
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
IPC分类号： G11B5/127
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译：根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽，轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。

3. 发明申请

US20120182646A1 PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC DISK APPARATUS 有权
标题翻译：全磁性记录头和磁盘设备
公开(公告)号：US20120182646A1
公开(公告)日：2012-07-19
申请号：US13431004
申请日：2012-03-27
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
IPC分类号： G11B5/127 , G11B5/54 , G11B5/11
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译：根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽，轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。

4. 发明申请

US20070268626A1 Perpendicular magnetic recording head and magnetic disk apparatus 有权
标题翻译：垂直磁记录头和磁盘设备
公开(公告)号：US20070268626A1
公开(公告)日：2007-11-22
申请号：US11797447
申请日：2007-05-03
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
IPC分类号： G11B5/147
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译：根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽，轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。

5. 发明授权

US06930843B2 Disk drive 失效
标题翻译：磁盘驱动器
公开(公告)号：US06930843B2
公开(公告)日：2005-08-16
申请号：US09949625
申请日：2001-09-12
申请人： Yuka Aoyagi , Akihiko Takeo , Tomoko Taguchi
发明人： Yuka Aoyagi , Akihiko Takeo , Tomoko Taguchi
IPC分类号： G11B5/667 , G11B5/00 , G11B5/012 , G11B19/04 , G11B21/12 , G11B27/36 , G11B21/02
CPC分类号： G11B21/12 , G11B5/012 , G11B19/04 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： There is disclosed a disk drive provided with a function of suspending a read/write operation in the case where the magnetic field of the magnetic disturbance out of the predetermined range is generated. The disk drive has a head writing data to the disk, a sensor detecting a magnetic field with respect to the disk drive, and an actuator unloading the head from the surface of the disk to a retracting position outside of the disk when the detected magnetic field is out of a predetermined range.
摘要翻译：公开了一种磁盘驱动器，其具有在产生磁干扰的磁场超出预定范围的情况下暂停读/写操作的功能。磁盘驱动器具有写入盘的数据头，相对于磁盘驱动器检测磁场的传感器，以及将磁头从磁盘表面卸载到盘外部的缩回位置的致动器，当检测到的磁场超出预定范围。

6. 发明授权

US07289293B2 Perpendicular recording magnetic disk apparatus 失效
标题翻译：垂直记录磁盘装置
公开(公告)号：US07289293B2
公开(公告)日：2007-10-30
申请号：US10992850
申请日：2004-11-22
申请人： Yuka Aoyagi
发明人： Yuka Aoyagi
IPC分类号： G11B5/012 , G11B5/82
CPC分类号： G11B5/82 , G11B5/012 , G11B5/1278 , G11B2005/0008 , G11B2005/001 , G11B2005/0016 , G11B2005/0029
摘要： A perpendicular recording magnetic disk apparatus has a perpendicular two-layered medium including a pinning layer, a soft underlayer and a perpendicular recording layer, and a write head including a main pole, a return yoke and an exciting coil. In this apparatus, a magnetization recoverable magnetic field Hexf by which the pinning layer and the soft underlayer ensure a magnetization recovery ratio of 1 is larger than a magnetic field applied by the write head to the pinning layer.
摘要翻译：垂直记录磁盘装置具有包括钉扎层，软底层和垂直记录层的垂直双层介质，以及包括主极，返回轭和励磁线圈的写入头。在该装置中，钉扎层和软底层确保磁化恢复率为1的磁化可恢复磁场H ex大于由写头施加到钉扎层的磁场。

7. 发明申请

US20060139794A1 Magnetic disk apparatus 审中-公开
标题翻译：磁盘装置
公开(公告)号：US20060139794A1
公开(公告)日：2006-06-29
申请号：US11312439
申请日：2005-12-21
申请人： Yuka Aoyagi
发明人： Yuka Aoyagi
IPC分类号： G11B5/012 , G11B17/00
CPC分类号： G11B5/11 , G11B5/667 , G11B2005/0029
摘要： A magnetic disk apparatus includes a magnetic recording media having a substrate, a data recording layer formed on one surface of the substrate and including a magnetic recording layer, and a shield layer formed on the other surface of the substrate and including a soft magnetic layer and no magnetic recording layer, and a magnetic head.
摘要翻译：磁盘装置包括具有基板的磁记录介质，形成在基板的一个表面上并包括磁记录层的数据记录层，以及形成在基板的另一表面上并包括软磁层和无磁记录层和磁头。

8. 发明授权

US06903890B2 Method and apparatus for write compensation of perpendicular magnetic recording in disk drive 有权
标题翻译：磁盘驱动器中垂直磁记录写入补偿的方法和装置
公开(公告)号：US06903890B2
公开(公告)日：2005-06-07
申请号：US10097327
申请日：2002-03-15
申请人： Yuka Aoyagi , Akihiko Takeo
发明人： Yuka Aoyagi , Akihiko Takeo
IPC分类号： G11B5/00 , G11B5/02 , G11B5/09 , G11B20/10 , G11B20/24
CPC分类号： G11B20/10212 , G11B5/09 , G11B20/10194 , G11B20/24 , G11B2005/0029
摘要： There is disclosed a write compensator which suppresses bit shift caused by distortion of a read signal waveform of a read head in a disk drive adopting a perpendicular magnetic recording system. The write compensator executes write compensation during recording data based on the known relationship between bit shift which is beyond an allowable range and a pattern of a data bit string of a data signal. A write amplifier converts the write-compensated data signal into an electrical signal by using the write compensator so as to suppress the bit shift, and supplies it to a write head.
摘要翻译：公开了一种写补偿器，其抑制由采用垂直磁记录系统的盘驱动器中的读头的读信号波形的失真引起的位移。写补偿器基于超出允许范围的位移与数据信号的数据位串的模式之间的已知关系在记录数据期间执行写补偿。写入放大器通过使用写补偿器将写补偿数据信号转换成电信号，以便抑制位移，并将其提供给写头。

9. 发明申请

US20070217067A1 Perpendicular Magnetic Recording Medium Using Soft Magnetic Layer Which Suppresses Noise Generation, And Perpendicular Magnetic Recording Apparatus Therewith 审中-公开
标题翻译：垂直磁记录介质使用抑制噪声产生的软磁层和垂直磁记录设备
公开(公告)号：US20070217067A1
公开(公告)日：2007-09-20
申请号：US10593966
申请日：2005-03-24
申请人： Futoshi Nakamura , Tsutomu Tanaka , Yuka Aoyagi , Kenji Shimizu , Hiroshi Sakai , Akira Sakawaki
发明人： Futoshi Nakamura , Tsutomu Tanaka , Yuka Aoyagi , Kenji Shimizu , Hiroshi Sakai , Akira Sakawaki
IPC分类号： G11B5/31
CPC分类号： G11B5/66 , B82Y25/00 , G11B5/667 , H01F10/08 , H01F10/3222
摘要： The magnetic recording medium of the present invention has a substrate, a perpendicular magnetic recording layer, and a soft magnetic layer formed therebetween, having a thickness of less than 100 nm, the soft magnetic layer having a magnetic anisotropy in a surface direction, and product Bs·Hc, which is a production of a saturation magnetic flux density Bs and a coercive force Hc, of not less than 79 T·A/m (10 kG·Oe). By making the thickness of the soft magnetic layer into the above-mentioned range, the magnetic anisotropy in surface direction can be stabilized. magnetostatic energy can be increased sufficiently by making the Bs·Hc the above-mentioned range. Therefore, generating of the magnetic wall in the soft magnetic layer can be suppressed, the noise generating from the soft magnetic layer can be suppressed, and a high-density recording is enabled.
摘要翻译：本发明的磁记录介质具有厚度小于100nm的基板，垂直磁记录层和形成在其间的软磁性层，软磁层在表面方向上具有磁各向异性，产品 Bs.Hc，其为饱和磁通密度Bs和矫顽力Hc的产生，不小于79 TA / m（10kG.Oe）。通过使软磁性层的厚度达到上述范围，可以使表面方向的磁各向异性稳定。通过使Bs.Hc达到上述范围，可以充分增加静磁能。因此，可以抑制软磁层中的磁壁的产生，能够抑制从软磁性层产生的噪声，能够实现高密度记录。

10. 发明申请

US20060001996A1 Perpendicular magnetic recording apparatus 失效
标题翻译：垂直磁记录装置
公开(公告)号：US20060001996A1
公开(公告)日：2006-01-05
申请号：US11168997
申请日：2005-06-29
申请人： Yuka Aoyagi , Tsutomu Tanaka , Kenji Shimizu , Akira Sakawaki
发明人： Yuka Aoyagi , Tsutomu Tanaka , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/02
CPC分类号： G11B5/667 , G11B5/1278 , G11B5/656 , G11B2005/0005
摘要： A perpendicular magnetic recording apparatus includes a perpendicular double-layered media having a substrate, a soft underlayer including a soft magnetic layer, an intermediate layer, and another soft magnetic layer in which the two soft magnetic layers are antiferromagnetically coupled with each other, and a perpendicular recording layer, and a magnetic head including a main pole, a return yoke, and an exciting coil. A relationship between an antiferromagnetic coupling force Hex_afc of the two soft magnetic layers included in the soft underlayer and a full width at half maximum MWW in a cross track direction when a low-frequency signal is recorded on the perpendicular recording layer by the magnetic head satisfies the following formula: Hex_afc>1.6*ln((0.23−MWW)2*100))+25.6.
摘要翻译：垂直磁记录装置包括具有基板的垂直双层介质，包括软磁层的软底层，中间层和其中两个软磁层彼此反铁磁耦合的另一软磁层，以及垂直记录层和包括主极，返回轭和励磁线圈的磁头。在低磁信号由磁头记录在垂直记录层上时，包含在软底层中的两个软磁性层的反铁磁耦合力Hex_afc与横向磁道方向上的半高宽MWW之间的关系满足以下公式：<？in-line-formula description =“In-line Formulas”end =“lead”？> Hex_afc> 1.6 * ln（（0.23-MWW）<2> * 100））+ 25.6。 <？in-line-formula description =“In-line Formulas”end =“tail”？>

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