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1. 发明专利

JP2013149340A Magnetic memory device, head drive control device, and head drive control method 审中-公开
标题翻译：磁记录装置，头驱动控制装置和头驱动控制方法
公开(公告)号：JP2013149340A
公开(公告)日：2013-08-01
申请号：JP2013040531
申请日：2013-03-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , FUKUDA HIROSHI , TAGAWA IKUYA , OKADA TOSHIHIRO
IPC分类号： G11B5/02 , G11B5/012 , G11B5/31 , H01L29/82 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To solve such a problem that, in a magnetic memory device by a conventional micro assist recording method, when a high-frequency magnetic field oscillation element is kept in an operating state in reproducing or seeking information, the information is often lost or rewritten according to external environment.SOLUTION: The magnetic memory device includes: a magnetic recording medium; a microwave assist magnetic recording head having at least recording magnetic poles for generating a recording magnetic field for writing in the magnetic recording medium, and a high-frequency magnetic field oscillation element for generating a high-frequency magnetic field; a magnetic reproduction head for reading information from the magnetic recording medium; signal processing means for processing a signal that the magnetic recording head writes and a signal that the magnetic reproduction head reads; and means for controlling clearance between a high-frequency magnetic field oscillator and the magnetic recording medium. The magnetic high-frequency magnetic field oscillation element is prevented from operating during a time other than a time of recording.
摘要翻译：要解决的问题为了解决这样一个问题，即在通过常规微辅助记录方法的磁存储装置中，当高频磁场振荡元件在再现或寻求信息时保持在操作状态时，信息通常是根据外部环境丢失或重写。磁盘存储器件包括：磁记录介质; 具有至少记录磁极的微波辅助磁记录头，用于产生用于在磁记录介质中写入的记录磁场;以及高频磁场振荡元件，用于产生高频磁场; 用于从磁记录介质读取信息的磁再现头; 信号处理装置，用于处理磁记录头写入的信号和磁再现头读取的信号; 以及用于控制高频磁场振荡器和磁记录介质之间的间隙的装置。磁性高频磁场振荡元件在记录之外的时间期间被防止操作。

2. 发明专利

JP2004348962A Thin-film magnetic head and manufacturing method thereof, and magnetic disk device 审中-公开
标题翻译：薄膜磁头及其制造方法及磁盘设备
公开(公告)号：JP2004348962A
公开(公告)日：2004-12-09
申请号：JP2004227618
申请日：2004-08-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKADA TOSHIHIRO , KAWATO YOSHIAKI , SUZUKI KO , FUKUI HIROSHI , NUNOKAWA ISAO
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To obtain a highly stable magnetic disk device using a perpendicular recording magnetic head which is manufactured so as not to be affected by the external magnetic field.
SOLUTION: A shield 15 for the external magnetic field is formed from a main magnetic electrode 12 with a gap film interposed therebetween, and its end part is arranged so as to retreat from the surface 14 opposite to a medium. The influence of the external magnetic field 16 is suppressed by providing the shield 15 for the external magnetic field, and further the leakage of the magnetic field to the medium 1 from the shield 15 for external magnetic field is prevented by making the end part retreat from the surface 14 opposite to the medium so that the erase of a magnetizing signal 4 does not occur.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了获得使用制造为不受外部磁场影响的垂直记录磁头的高度稳定的磁盘装置。解决方案：用于外部磁场的屏蔽件15由主磁极12形成，间隙膜插入其间，并且其端部布置成从与介质相对的表面14退回。通过设置用于外部磁场的屏蔽体15来抑制外部磁场16的影响，并且通过使端部部分退避而防止从外部磁场的屏蔽件15向介质1的磁场泄漏表面14与介质相对，使得不发生磁化信号4的擦除。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2003045008A Thin-film magnetic head and manufacturing method thereof, and magnetic disk device 有权
标题翻译：薄膜磁头及其制造方法及磁盘设备
公开(公告)号：JP2003045008A
公开(公告)日：2003-02-14
申请号：JP2001235835
申请日：2001-08-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKADA TOSHIHIRO , KAWATO YOSHIAKI , SUZUKI KO , FUKUI HIROSHI , NUNOKAWA ISAO
IPC分类号： G11B5/31 , G11B5/00 , G11B5/012 , G11B5/127 , G11B5/39
CPC分类号： G11B5/1278 , G11B5/012 , G11B5/3903 , G11B5/3967 , G11B2005/0029 , Y10T29/49032 , Y10T29/49034 , Y10T29/49037 , Y10T29/49043 , Y10T29/49044
摘要： PROBLEM TO BE SOLVED: To obtain a highly stable magnetic disk device using a perpendicular recording magnetic head which is manufactured so as not to be affected by the external magnetic field. SOLUTION: A shield 15 for the external magnetic field is formed apart from a main magnetic electrode 12 with a gap film interposed therebetween, and its end part is arranged so as to retreat from the surface 14 opposite to a medium. The influence of the external magnetic field 16 is suppressed by providing the shield 15 for the external magnetic field, and further the leakage of the magnetic field to the medium 1 from the shield 15 for external magnetic field is prevented by making the end part retreat from the surface 14 opposite to the medium so that the erase of a magnetizing signal 4 does not occur.
摘要翻译：要解决的问题：为了获得使用不受外部磁场影响制造的垂直记录磁头的高度稳定的磁盘装置。解决方案：用于外部磁场的屏蔽件15与主磁极12隔开形成间隙膜，并且其端部布置成从与介质相对的表面14退回。通过设置用于外部磁场的屏蔽体15来抑制外部磁场16的影响，并且通过使端部部分退避而防止从外部磁场的屏蔽件15向介质1的磁场泄漏表面14与介质相对，使得不发生磁化信号4的擦除。

4. 发明专利

JP2013251044A Magnetic storage device, head drive control device and head drive control method 有权
标题翻译：磁性存储装置，头驱动控制装置和头驱动控制方法
公开(公告)号：JP2013251044A
公开(公告)日：2013-12-12
申请号：JP2013155098
申请日：2013-07-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , FUKUDA HIROSHI , TAGAWA IKUYA , OKADA TOSHIHIRO
IPC分类号： G11B5/02 , G11B5/31
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable and large capacity magnetic storage device allowing for high manufacturing yield and high recording density.SOLUTION: A magnetic storage device comprises: a magnetic recording medium; a microwave assisted magnetic recording head including a recording magnetic pole generating a recording magnetic field for performing writing to the magnetic recording medium, a high frequency magnetic field oscillation element generating a high frequency magnetic field, and means for energizing the high frequency magnetic field oscillation element; a magnetic reproducing head that reads information from the magnetic recording medium; and means for controlling and processing recording operation of the magnetic recording head and reproducing operation of the magnetic reproducing head. During a non-recording period before energization of the recording magnetic pole, the high frequency magnetic field oscillation element is energized by the means for energizing the high frequency magnetic field oscillation element, and then the recording magnetic pole is energized, thereby performing recording operation.
摘要翻译：要解决的问题：提供高可靠性和大容量的磁存储装置，其允许高的制造成品率和高的记录密度。解决方案：磁存储装置包括：磁记录介质; 一种微波辅助磁记录头，包括产生用于对磁记录介质进行写入的记录磁场的记录磁极，产生高频磁场的高频磁场振荡元件，以及用于激励高频磁场振荡元件 ; 从磁记录介质读取信息的磁再现头; 以及用于控制和处理磁记录头的记录操作和磁再现头的再现操作的装置。在记录磁极通电之前的非记录时段期间，高频磁场振荡元件由用于激励高频磁场振荡元件的装置激励，然后记录磁极通电，从而进行记录操作。

5. 发明专利

JP2013073661A Magnetic storage apparatus, head drive controller, and head drive control method 有权
标题翻译：磁力储存装置，头驱动控制器和头驱动控制方法
公开(公告)号：JP2013073661A
公开(公告)日：2013-04-22
申请号：JP2011213976
申请日：2011-09-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , FUKUDA HIROSHI , TAGAWA IKUYA , OKADA TOSHIHIRO
IPC分类号： G11B5/02 , G11B5/31
CPC分类号： G11B5/3146 , G11B5/607 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To resolve problems in a conventional magnetic storage apparatus based on a microwave assisted magnetic recording method where information may disappear or be rewritten depending upon external environment if a high-frequency magnetic field oscillator element is operated at a time of reproducing information and seeking .SOLUTION: A magnetic storage apparatus includes: a magnetic recording medium; a microwave assisted magnetic recording head at least equipped with a magnetic recording pole that generates a recording magnetic field for writing to the magnetic recording medium and with a high-frequency magnetic field oscillator element that generates a high-frequency magnetic field; a magnetic reproducing head that reads information from the magnetic recording medium; a signal processing means that processes a signal written by the magnetic recording head and a signal read by the magnetic reproducing head; and a means that controls clearance between the high-frequency magnetic field oscillator and the magnetic recording medium. In the magnetic storage apparatus, the high-frequency magnetic field oscillator element is not operated except at a time of recording.
摘要翻译：解决的问题：为了解决现有的基于微波辅助磁记录方法的常规磁存储装置中的问题，如果高频磁场振荡器元件一次运行，则根据外部环境信息可能消失或被重写重现信息和寻求。解决方案：磁存储装置包括：磁记录介质; 至少配备有磁记录极的微波辅助磁记录头，其产生用于向磁记录介质写入的记录磁场和产生高频磁场的高频磁场振荡器元件; 从磁记录介质读取信息的磁再现头; 处理由磁记录头写入的信号和由磁再现头读出的信号的信号处理装置; 以及控制高频磁场振荡器和磁记录介质之间的间隙的装置。在磁存储装置中，除了在记录时，高频磁场振荡器元件不工作。版权所有（C）2013，JPO＆INPIT

6. 发明专利

JP2004171762A Method for manufacturing single magnetic pole magnetic head 审中-公开
公开(公告)号：JP2004171762A
公开(公告)日：2004-06-17
申请号：JP2004015111
申请日：2004-01-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKADA TOSHIHIRO , KAWATO YOSHIAKI , NISHIDA YASUTAKA , WAKAGI YASUO
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To manufacture a magnetic head for perpendicular recording in which there is no writing from the main magnetic pole side and no erasure between the adjacent tracks, and to obtain a magnetic disk device using the magnetic head. SOLUTION: The side of the main magnetic pole of the magnetic head for perpendicular recording is formed into an inverse tapered shape. The inverse tapered shape is obtained by previously forming a groove being a track part on an inorganic insulation film, then forming a magnetic film, and flatting the upper surface. COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2002367119A Method for manufacturing magnetic head 有权
标题翻译：制造磁头的方法
公开(公告)号：JP2002367119A
公开(公告)日：2002-12-20
申请号：JP2001173402
申请日：2001-06-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ETO KIMITOSHI , OKADA TOSHIHIRO
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk device having a surface recording density of 40 Gbit/in
2 or higher by manufacturing a magnetic head having a track width of 0.24 μm.
SOLUTION: In a reticle for forming the reproducing track width of the magnetic head of a magnetic disk device, a track width of 0.24 μm is formed by using an edge emphasis phase shift mask in which the phase of the transmissive light of one electrode pattern is reversed from that of the other transmissive light.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：通过制造轨道宽度为0.24μm的磁头来提供具有40Gbit / in 2或更高的表面记录密度的磁盘装置。解决方案：在用于形成磁盘装置的磁头的再现磁道宽度的掩模版中，通过使用边缘加强相移掩模形成轨道宽度为0.24μm，其中一个电极图案的透射光的相位为与其他透射光的相反。

8. 发明专利

JP2004342167A Reproducing magnetic head and manufacturing method therefor 审中-公开
公开(公告)号：JP2004342167A
公开(公告)日：2004-12-02
申请号：JP2003134866
申请日：2003-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUYAMA HIDEO , HAGINOYA CHISEKI , OKADA TOSHIHIRO , WATANABE KATSURO
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To manufacture a minute contact section in the order of nano meters on the magnetic layer (magnetism reception section, free layer) having an area of approximately 100 nm × 100 nm × several nm by a method suited for mass production.
SOLUTION: The magnetism reception section 2 and a reference magnetic section 4 are arranged while at least one portion is in contact, and the area of the contact section is reduced by machining, thus manufacturing at least one minute contact section 7 between the magnetism reception section and the reference magnetic section finally.
COPYRIGHT: (C)2005,JPO&NCIPI

9. 发明专利

JP2004013944A Thin film magnetic head, its manufacturing method and magnetic disk device 审中-公开
公开(公告)号：JP2004013944A
公开(公告)日：2004-01-15
申请号：JP2002162281
申请日：2002-06-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ETO KIMITOSHI , OKADA TOSHIHIRO , OKAI TETSUYA
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To make a magnetic head having a recording track width of 0.4 μm or below, and to obtain a magnetic disk device having a surface recording density of 40 Gbit/in
2 or above.
SOLUTION: As a reticle for forming the recording track width of the magnetic head, there is arranged a phase shifter on both sides of the track section. An edge-emphasized phase shift mask is used having a zero space between the track width and the phase shifter. Thus, the track width of 0.4 μm or below is formed.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2003263705A PERPENDICULAR RECORDING MAGNETIC HEAD AND MAGNETIC DISK DRIVE ON WHICH HEAD IS MOUNTED 审中-公开
公开(公告)号：JP2003263705A
公开(公告)日：2003-09-19
申请号：JP2002062809
申请日：2002-03-08
申请人： HITACHI LTD
发明人： OTAKE ICHIRO , OKADA TOSHIHIRO , KUDO KAZUE , YOSHIDA NOBUO , ETO KIMITOSHI
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To manufacture a perpendicular recording magnetic head wherein there is neither writing from a main magnetic pole surface nor erasure to an adjacent track, and to provide a magnetic disk drive using the same. SOLUTION: The side face of the main magnetic pole of a perpendicular recording magnetic head is formed in a reverse tapered shape. This reverse tapered shape is obtained by etching the main magnetic pole formed by a frame plating method by ion milling, and an a top surface is made flat. COPYRIGHT: (C)2003,JPO

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