公开(公告)号：US08107352B1

公开(公告)日：2012-01-31

申请号：US12852775

申请日：2010-08-09

Applicant: Noboru Yamanaka ,  Takuya Adachi ,  Isamu Sato ,  Hiroshi Ikeda

Inventor： Noboru Yamanaka ,  Takuya Adachi ,  Isamu Sato ,  Hiroshi Ikeda

IPC: G11B7/00 ,  G11B5/147

CPC classification number: G11B5/314 ,  G11B5/1278 ,  G11B2005/0024

Abstract: A microwave assisted magnetic head is formed to include a main pole magnetic layer including a main pole; a shielded magnetic layer including a shielded pole; a recording coil that is formed to generate a writing magnetic field from a tip of the main pole; and a microwave radiation waveguide made of a conductive nonmagnetic material that is disposed in a recording gap, the recording gap being a gap between the main pole and the shielded pole. The main pole magnetic layer and the shielded magnetic layer have an intermediate connection part that connects the layers at a depth-side, and an electrical insulation magnetic film is disposed in the intermediate connection part, and the main pole and the shielded pole are electrically connected with the microwave radiation waveguide that is disposed in the recording gap, which is the gap between the main pole and the shielded pole so that a simple configuration, with a relatively easy and efficient manufacturing process, is realized that overlaps AC magnetic fields in an in-plane direction of a microwave band, which is the same as, or close to, a ferromagnetic resonant frequency of a medium recording layer.

Abstract translation: 微波辅助磁头形成为包括主极的主极磁性层; 包括屏蔽极的屏蔽磁性层; 形成为从主极的尖端产生书写磁场的记录线圈; 以及设置在记录间隙中的由导电非磁性材料制成的微波辐射波导，记录间隙是主极和屏蔽极之间的间隙。 主极磁性层和屏蔽磁性层具有在深度侧连接层的中间连接部，并且在中间连接部中设置电绝缘性的磁性膜，并且主极和屏蔽极电气连接 利用布置在作为主极和屏蔽极之间的间隙的记录间隙中的微波辐射波导，从而实现了具有相对简单和有效的制造工艺的简单配置，其与交流磁场重叠， 与介质记录层的铁磁谐振频率相同或接近的微波频带的平面方向。

公开(公告)号：US07187521B2

公开(公告)日：2007-03-06

申请号：US10778228

申请日：2004-02-17

Applicant: Noboru Yamanaka ,  Norikazu Ota

Inventor： Noboru Yamanaka ,  Norikazu Ota

IPC: G11B5/31

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/10 ,  G11B5/105 ,  G11B5/11 ,  G11B5/3103 ,  G11B5/3967 ,  G11B5/40 ,  G11B5/4886 ,  G11B2005/3996

Abstract: A thin-film magnetic head comprises at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing, and a heating element provided in the head body part. The heating element has an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.

公开(公告)号：US06965496B2

公开(公告)日：2005-11-15

申请号：US10667337

申请日：2003-09-23

Applicant: Noboru Yamanaka

Inventor： Noboru Yamanaka

IPC: G11B5/31 ,  G11B5/39 ,  G11B5/147

CPC classification number: G11B5/3967 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/3166 ,  G11B5/3903

Abstract: In a first magnetic film, two notches are formed separately by a given distance, and a first pole piece is located between the notches. The first pole piece includes a uniform width portion. A second magnetic film includes a second pole piece. In the first pole piece, if the height of the uniform width portion is defined by “TH1”, and the depth of the uniform width portion to a top surface from a base plane of the first magnetic film is defined by “ND1”, and the thickness of said gap film is defined by “WG”, the relations of TH1≧4WG and ND1≧4WG are satisfied.

Abstract translation: 在第一磁性膜中，两个凹口分开形成给定距离，第一极片位于凹口之间。 第一极片包括均匀的宽度部分。 第二磁性膜包括第二极片。 在第一极片中，如果均匀宽度部分的高度由“TH1”定义，并且从第一磁性膜的基面到顶表面的均匀宽度部分的深度由“ND1”定义，并且 所述间隙膜的厚度由“WG”定义，满足TH1> = 4WG和ND1> = 4WG的关系。

公开(公告)号：US06252748B1

公开(公告)日：2001-06-26

申请号：US09169983

申请日：1998-10-13

Applicant: Noboru Yamanaka ,  Kazumasa Fukuda ,  Yuzuru Iwai

Inventor： Noboru Yamanaka ,  Kazumasa Fukuda ,  Yuzuru Iwai

IPC: G11B539

CPC classification number: G11B5/3967 ,  G11B5/3116 ,  G11B5/312

Abstract: A gap film of a write element is provided between a first pole portion and a second pole portion. The second pole portion includes a third magnetic film and a fourth magnetic film. The third magnetic film is provided adjacent to the gap film and the fourth magnetic film is provided adjacent to the third magnetic film. The surface of the fourth magnetic film facing opposite the medium includes a first side adjacent to the third magnetic film and a second sides extending outward from the first side. The second sides each inclines toward the opposite side from the third magnetic film at an angle of less than 90° relative to an extended line of the first side to eliminate recording bleed occurring due to leaked magnetic field.

Abstract translation: 写元件的间隙膜设置在第一极部分和第二极部分之间。 第二极部包括第三磁性膜和第四磁性膜。 第三磁性膜被设置成与间隙膜相邻，并且第四磁性膜设置成与第三磁性膜相邻。 第四磁性膜的与介质相对的表面包括与第三磁性膜相邻的第一侧和从第一侧向外延伸的第二侧。 第二面各自相对于第一侧的延长线以相对于第三磁性膜的相反侧倾斜90度以消除由于泄漏的磁场而产生的记录渗漏。

公开(公告)号：US6144533A

公开(公告)日：2000-11-07

申请号：US215301

申请日：1998-12-18

Applicant: Kazumasa Fukuda ,  Noboru Yamanaka ,  Yuzuru Iwai

Inventor： Kazumasa Fukuda ,  Noboru Yamanaka ,  Yuzuru Iwai

IPC: G11B5/09 ,  G11B5/31 ,  G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3967 ,  G11B5/31 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/09

Abstract: The present invention relates to a thin film magnetic head that achieves low NLTS and demonstrates outstanding O/W characteristics in a high frequency range. A first magnetic film and a second magnetic film face opposite each other over a gap film at a side where a surface facing opposite the medium is present. A first yoke and a second yoke, which extend rearward on the opposite side from the surface facing opposite the medium, are linked to each other at a rear linking portion. A coil film, which is supported by an insulating film, is provided in a coil around the rear linking portion. N/YL.gtoreq.0.2 (turns/.mu.m) is satisfied, with YL (.mu.m) representing the distance from the surface facing opposite the medium to the rear linking portion and N (turns) representing the number of turns of the coil film.

Abstract translation: 薄膜磁头技术领域本发明涉及一种实现低NLTS并在高频范围内表现出优异的O / W特性的薄膜磁头。 第一磁性膜和第二磁性膜表面在与存在介质相反的一侧的间隙膜上彼此相对。 在与相对介质相对的表面的相反侧向后延伸的第一轭和第二轭在后连接部处彼此连接。 由绝缘膜支撑的线圈膜围绕后连接部设置在线圈中。 N / YL> / = 0.2（匝/μm），其中YL（μm）表示与介质相对于后连接部分的表面的距离，N（匝数）表示线圈匝数 电影。

公开(公告)号：US6075676A

公开(公告)日：2000-06-13

申请号：US153275

申请日：1998-09-14

Applicant: Shinji Hiraoka ,  Masashi Shiraishi ,  Takuro Tsuruda ,  Noboru Yamanaka

Inventor： Shinji Hiraoka ,  Masashi Shiraishi ,  Takuro Tsuruda ,  Noboru Yamanaka

IPC: G11B5/60 ,  G11B5/11 ,  G11B5/40 ,  G11B5/48 ,  G11B21/16 ,  G11B5/58

CPC classification number: G11B5/486 ,  G11B21/16 ,  G11B5/40 ,  G11B5/4806 ,  G11B5/11

Abstract: A head assembly including a suspension, a head slider mounted on a front end portion of the suspension and having a magnetoresistive element, and a pair of lead lines formed on the suspension and having first ends connected to the magnetoresistive element. The head assembly further includes a metal ball connected by bonding to the pair of lead lines. In handling the head assembly as a separate member, a current caused by static electricity flows through the metal ball short-circuiting the pair of lead lines, thereby preventing burning of the magnetoresistive element due to the current. After mounting the head assembly to an actuator arm, the metal ball is removed to electrically open the pair of lead lines.

Abstract translation: 一种头部组件，包括悬架，安装在所述悬架的前端部上并具有磁阻元件的磁头滑块以及形成在所述悬架上并具有连接到所述磁阻元件的第一端的一对引线。 头组件还包括通过结合到一对引线连接的金属球。 在将头部组件作为单独的部件处理时，由静电引起的电流流过金属球，使一对引线短路，从而防止由于电流引起的磁阻元件的燃烧。 在将头组件安装到致动器臂之后，去除金属球以电开放一对引线。

公开(公告)号：US08559123B2

公开(公告)日：2013-10-15

申请号：US12801540

申请日：2010-06-14

Applicant: Kei Hirata ,  Norikazu Ota ,  Noboru Yamanaka

Inventor： Kei Hirata ,  Norikazu Ota ,  Noboru Yamanaka

IPC: G11B5/09

CPC classification number: G11B5/1278 ,  B82Y10/00 ,  G11B5/743

Abstract: This magnetic recording device is provided with a magnetic write head having a magnetic pole, and a magnetic recording medium having a plurality of data recording blocks. Each of the data recording blocks is formed with a plurality of write tracks, and separated, in a write track width direction, from neighboring one of the data recording blocks with a writing exudation suppression section in between. With this configuration, a magnetic mutual interference of the adjacent data recording blocks at the time of a data rewriting process is avoided even when a mutual interval of the data recording blocks is narrowed, and a good recording state is maintained in each of the data recording blocks. Therefore, it is possible to achieve an improvement in a recording density, while realizing the good and brief data rewriting process for each of the data recording blocks.

Abstract translation: 该磁记录装置设置有具有磁极的磁写头和具有多个数据记录块的磁记录介质。 每个数据记录块形成有多个写入磁道，并且在写入磁道宽度方向上与相邻的一个数据记录块之间具有写入渗出抑制部分。 利用这种配置，即使当数据记录块的相互间隔变窄时也避免了在数据重写处理时相邻的数据记录块的磁互相干扰，并且在每个数据记录中保持良好的记录状态 块。 因此，可以实现对每个数据记录块的良好且简短的数据重写处理的记录密度的提高。

公开(公告)号：US08085491B2

公开(公告)日：2011-12-27

申请号：US12659129

申请日：2010-02-26

Applicant: Yosuke Antoku ,  Noboru Yamanaka ,  Masashi Sano ,  Kosuke Tanaka ,  Man Tse ,  Eric Cheuk Wing Leung ,  Luke Hung Leung Chung

Inventor： Yosuke Antoku ,  Noboru Yamanaka ,  Masashi Sano ,  Kosuke Tanaka ,  Man Tse ,  Eric Cheuk Wing Leung ,  Luke Hung Leung Chung

IPC: G11B2/21

CPC classification number: G11B5/6005 ,  G11B5/6064

Abstract: For obtaining a flying height of a magnetic head from a magnetic disk, the magnetic head being placed in a slider arranged at an interval with the magnetic disk, an initial setting process and a flying height detecting process are performed. In the initial setting process, driving power to a heater is increased gradually, from a state where the heater arranged at a position in proximity to the magnetic head in the slider is not driven, until the magnetic head makes contact with the magnetic disk. Then, in each stage, an electrical resistance value of the sensor arranged at a position in proximity to the magnetic head in the slider, which is increased due to the heat from heater, and either an approach distance of the magnetic head toward the magnetic disk or the flying height of the magnetic head from the magnetic disk are acquired. Then, basic data is prepared by obtaining the relationship between a variation of the electrical resistance value of the sensor and the flying height of the magnetic head from the magnetic disk, which is obtained in each stage or which calculated from the approach distance in each stage. In the flying height detecting process, an electrical resistance value of the sensor is determined, and a variation of the electrical resistance value is calculated from the determined values. Then, the flying height of the magnetic head from the magnetic disk in the state where the electrical resistance value was determined is obtained based on the basic data obtained in the initial setting process, using the calculated variation of the electrical resistance value.

公开(公告)号：US08027110B1

公开(公告)日：2011-09-27

申请号：US12844348

申请日：2010-07-27

Applicant: Noboru Yamanaka ,  Tomoyuki Sasaki ,  Takuya Adachi ,  Isamu Sato ,  Hiroshi Ikeda

Inventor： Noboru Yamanaka ,  Tomoyuki Sasaki ,  Takuya Adachi ,  Isamu Sato ,  Hiroshi Ikeda

IPC: G11B27/36

CPC classification number: G01R33/091 ,  G11B5/314 ,  G11B2005/0024

Abstract: A measurement circuit system of a magnetic field measurement apparatus of the present invention includes an amplifier, a mixer circuit and a band-pass filter that are connected in order on an output end side of a microstrip line or a coplanar wave guide, which is an in-plane high frequency magnetic field intensity measurement element, a frequency immediately before being inputted in the band-pass filter is down-converted by the mixer circuit to a frequency so that a band width of the band-pass filter can be used, the band-pass filter uses a narrow band of ±0.5-±10 KHz (1 KHz-20 KHz as a bandwidth) centering a fundamental frequency selected from 5-20 MHz that is down-converted by the mixer circuit as a center peak passing frequency, and the measurement circuit system is configured to obtain 3 dB or greater of a signal-to-noise ratio (SNR) that is a ratio of S with N; where S represents the reproduction voltage (reproduction output) of the high frequency reproduction signal induced by the in-plane high frequency magnetic field intensity measurement element, and N represents a total noise voltage of a circuit noise including a noise generated by the in-plane high frequency magnetic field intensity measurement element. Therefore, the in-plane high frequency magnetic field that a microwave-assisted magnetic head generates can be measured with high reliability and precision.

Abstract translation: 本发明的磁场测量装置的测量电路系统包括在微带线或共面波导的输出端侧依次连接的放大器，混频器电路和带通滤波器，它是 在平面内的高频磁场强度测量元件中，紧接在带通滤波器中输入的频率由混频器电路下变频到频率，使得可以使用带通滤波器的带宽， 带通滤波器采用±0.5〜10KHz（1KHz-20KHz作为带宽）的中心峰值通过频率，该频带以选择5-20MHz的基频为中心，由频率调制器电路进行下变频 并且测量电路系统被配置为获得S与N的比率的3dB或更大的信噪比（SNR）; 其中S表示由面内高频磁场强度测量元件感应的高频再现信号的再现电压（再现输出），N表示包括由平面内高频磁场强度测量元件产生的噪声的电路噪声的总噪声电压 高频磁场强度测量元件。 因此，可以高可靠性和精度地测量微波辅助磁头产生的平面内高频磁场。

公开(公告)号：US20110211275A1

公开(公告)日：2011-09-01

申请号：US12659129

申请日：2010-02-26

Applicant: Yosuke Antoku ,  Noboru Yamanaka ,  Masashi Sano ,  Kosuke Tanaka ,  Man Tse ,  Eric Cheuk Wing Leung ,  Luke Hung Leung Chung

Inventor： Yosuke Antoku ,  Noboru Yamanaka ,  Masashi Sano ,  Kosuke Tanaka ,  Man Tse ,  Eric Cheuk Wing Leung ,  Luke Hung Leung Chung

IPC: G11B21/02

CPC classification number: G11B5/6005 ,  G11B5/6064

Abstract: For obtaining a flying height of a magnetic head from a magnetic disk, the magnetic head being placed in a slider arranged at an interval with the magnetic disk, an initial setting process and a flying height detecting process are performed. In the initial setting process, driving power to a heater is increased gradually, from a state where the heater arranged at a position in proximity to the magnetic head in the slider is not driven, until the magnetic head makes contact with the magnetic disk. Then, in each stage, an electrical resistance value of the sensor arranged at a position in proximity to the magnetic head in the slider, which is increased due to the heat from heater, and either an approach distance of the magnetic head toward the magnetic disk or the flying height of the magnetic head from the magnetic disk are acquired. Then, basic data is prepared by obtaining the relationship between a variation of the electrical resistance value of the sensor and the flying height of the magnetic head from the magnetic disk, which is obtained in each stage or which calculated from the approach distance in each stage. In the flying height detecting process, an electrical resistance value of the sensor is determined, and a variation of the electrical resistance value is calculated from the determined values. Then, the flying height of the magnetic head from the magnetic disk in the state where the electrical resistance value was determined is obtained based on the basic data obtained in the initial setting process, using the calculated variation of the electrical resistance value.

Abstract translation: 为了从磁盘获得磁头的飞行高度，磁头被放置在与磁盘间隔设置的滑块中，执行初始设定处理和飞行高度检测处理。 在初始设定处理中，从布置在滑动件附近的磁头的位置的加热器未被驱动的状态直到磁头与磁盘接触的状态逐渐增加到加热器的驱动电力。 然后，在各阶段，布置在靠近滑块的磁头的位置处的传感器的电阻值由于来自加热器的热而增加，并且磁头朝向磁盘的接近距离 或者从磁盘获取磁头的飞行高度。 然后，通过获得传感器的电阻值的变化与来自磁盘的磁头的飞行高度之间的关系来准备基本数据，该关系是在每个阶段中获得的，或者由每个阶段中的接近距离计算 。 在飞行高度检测处理中，确定传感器的电阻值，并根据确定的值计算电阻值的变化。 然后，使用计算出的电阻值的变化，基于在初始设定处理中获得的基本数据，求出在确定了电阻值的状态下磁头从磁盘的飞行高度。