公开(公告)号：US20170278530A1

公开(公告)日：2017-09-28

申请号：US15080964

申请日：2016-03-25

Applicant: TDK Corporation

Inventor： Koji SHIMAZAWA ,  Tsutomu CHOU ,  Yoshihiro TSUCHIYA ,  Kosuke TANAKA

IPC: G11B5/48

CPC classification number: G11B5/4866 ,  G11B5/012 ,  G11B5/127 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A plasmon generator generates surface plasmon and generates near-field light from the surface plasmon at a distal end surface situated on an air bearing surface facing a magnetic recording medium. The plasmon generator has a first portion including the distal end surface, a second portion situated away from the air bearing surface, and a separating layer situated between the first portion and the second portion and separating the first portion from the second portion.

公开(公告)号：US20140241138A1

公开(公告)日：2014-08-28

申请号：US13773708

申请日：2013-02-22

Applicant: TDK CORPORATION ,  SAE MAGNETICS (H.K.) LTD.

Inventor： Kei HIRATA ,  Koji SHIMAZAWA ,  Yasutoshi FUJITA ,  Ryuji FUJII

IPC: G11B13/04

CPC classification number: G11B5/3133 ,  G11B5/314 ,  G11B5/607 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A magnetic head includes a reading part, a recording part that is laminated on the reading part in a planer view, a recording part expansion heater, a reading part expansion heater, and a thermal expansion promoting layer that is prepared at a position closer to the reading part than to the recording part and extends to an air bearing surface.

Abstract translation: 磁头包括读取部分，在平面视图中层压在读取部分上的记录部分，记录部分膨胀加热器，读取部分膨胀加热器和热膨胀促进层，其在靠近 读取部分而不是记录部分并延伸到空气轴承表面。

公开(公告)号：US20150170675A1

公开(公告)日：2015-06-18

申请号：US14104336

申请日：2013-12-12

Applicant: TDK CORPORATION ,  SAE MAGNETICS (H.K.) LTD.

Inventor： Koji SHIMAZAWA ,  Pak Kin WONG ,  Vincent Man Fat CHIAH

IPC: G11B5/09

CPC classification number: G11B5/09 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: The thermally-assisted magnetic recording method is a method to perform information recording on a magnetic recording medium by a thermally-assisted magnetic recording head having a magnetic pole and a heating element, and the method includes: performing annealing treatment of the heating element through applying first energy to the heating element and heating the heating element; and performing information recording to a predetermined recording region of the magnetic recording medium after the annealing treatment. The information recording is performed through rotating the magnetic recording medium as well as floating the thermally-assisted magnetic recording head above the magnetic recording medium, and applying second energy to the heating element to heat a predetermined recording region of the magnetic recording medium as well as applying a write magnetic field from the magnetic pole to the predetermined recording region.

Abstract translation: 热辅助磁记录方法是通过具有磁极和加热元件的热​​辅助磁记录头在磁记录介质上执行信息记录的方法，该方法包括：通过施加对加热元件进行退火处理 向加热元件施加第一能量并加热加热元件; 并且在退火处理之后对磁记录介质的预定记录区执行信息记录。 信息记录是通过旋转磁记录介质以及将热辅助磁记录头浮置在磁记录介质之上而进行的，并且向加热元件施加第二能量以加热磁记录介质的预定记录区，以及 将写入磁场从磁极施加到预定的记录区域。

公开(公告)号：US20140254333A1

公开(公告)日：2014-09-11

申请号：US13791008

申请日：2013-03-08

Applicant: TDK CORPORATION

Inventor： Eiji KOMURA ,  Tsutomu CHOU ,  Koji SHIMAZAWA

IPC: H01P3/16 ,  G11B13/04

CPC classification number: H01P3/16 ,  G02B6/105 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021 ,  H01P1/165 ,  H01P3/122

Abstract: A polarization converter of the invention includes a core part that wave-guides an electromagnetic wave and a cladding part that is provided around the core part. The core part includes a conversion part converting a polarization state of the electromagnetic wave. A cross-sectional shape of the conversion part in a plane orthogonal to a propagation direction of the electromagnetic wave is a shape formed by cutting off a portion of a rectangular or square shape along a jagged diagonal line.

Abstract translation: 本发明的偏振转换器包括：引导电磁波的芯部和设置在芯部周围的包层部。 核心部分包括转换电磁波的偏振状态的转换部分。 与电磁波的传播方向垂直的平面中的转换部的截面形状是沿着锯齿状的对角线切断矩形或正方形的一部分而形成的形状。

公开(公告)号：US20140209664A1

公开(公告)日：2014-07-31

申请号：US13750499

申请日：2013-01-25

Applicant: TDK CORPORATION ,  SAE MAGNETICS (H.K.) LTD.

Inventor： Seiichi TAKAYAMA ,  Yasuhiro ITO ,  Nobuyuki MORI ,  Koji SHIMAZAWA ,  Kazuaki TAKANUKI ,  Youichi ANDO

IPC: G11B5/127

CPC classification number: G11B5/105 ,  G11B5/3166 ,  G11B5/455 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T29/49036

Abstract: A method of manufacturing an electronic device includes a positioning step of positioning a first member supporting a laser diode with respect to a second member having a waveguide, a bonding step of bonding the first member and the second member together, and a checking step of checking the accuracy of positioning of the first member with respect to the second member. In the positioning step, the laser diode is energized to allow laser light to be emitted, and the laser light is allowed to be incident on the incidence end of the waveguide. In the bonding step, a bonding material is melted by irradiating the first member with heating light while the laser diode is not energized. In the checking step, the laser diode is energized again.

Abstract translation: 一种电子装置的制造方法，其特征在于，包括：定位步骤，使相对于具有波导的第二构件支撑激光二极管的第一构件，将所述第一构件和所述第二构件接合在一起的接合工序;以及检查步骤 第一构件相对于第二构件的定位精度。 在定位步骤中，对激光二极管通电以允许发射激光，并允许激光入射到波导的入射端。 在接合步骤中，当激光二极管未通电时，通过用加热光照射第一构件来熔化接合材料。 在检查步骤中，激光二极管再次通电。

公开(公告)号：US20160232928A1

公开(公告)日：2016-08-11

申请号：US14657436

申请日：2015-03-13

Applicant: SAE Magnetics (H.K.) Ltd. ,  TDK Corporation ,  ROHM CO., LTD.

Inventor： Takashi HONDA ,  Seiichi TAKAYAMA ,  Ryuji FUJII ,  Koji SHIMAZAWA ,  Tsuguki NOMA ,  Yoshiteru NAGAI

IPC: G11B5/48 ,  G01J1/44

CPC classification number: G11B5/4866 ,  G01J1/4257 ,  G01J1/44 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A light source unit has a substrate, a light source that is mounted to the substrate. The light source includes; a first emission part that emits a forward light, the forward light being a laser light in an oscillation state; a second emission part that is located on a side opposite to the first emission part and that emits a rearward light, the rearward light being a laser light in an oscillation state; and a light leakage part located at a position different from the first emission part and the second emission part. The light source further includes a photodetector that is provided on the substrate, wherein the photodetector has a light receiving surface for detecting a leakage light that leaks from the light leakage part.

Abstract translation: 光源单元具有基板，安装在基板上的光源。 光源包括 第一发射部分，其发射向前的光，所述前向光是处于振荡状态的激光; 第二发射部分，其位于与第一发射部分相对的一侧，并且发射向后的光，所述后向光是处于振荡状态的激光; 以及位于与第一发射部分和第二发射部分不同的位置的漏光部分。 光源还包括设置在基板上的光电检测器，其中光电检测器具有用于检测从漏光部分泄漏的泄漏光的光接收表面。

公开(公告)号：US20160019922A1

公开(公告)日：2016-01-21

申请号：US14335984

申请日：2014-07-21

Applicant: TDK CORPORATION

Inventor： Norikazu OTA ,  Osamu NAKADA ,  Mitsuo OTSUKI ,  Shinji HARA ,  Daisuke MIYAUCHI ,  Tetsuya ROPPONGI ,  Koji SHIMAZAWA

IPC: G11B5/60

CPC classification number: G11B5/607 ,  G11B5/6011 ,  G11B5/6029 ,  G11B5/6052 ,  G11B5/6076 ,  G11B5/6088 ,  G11B2005/0021

Abstract: While a plurality of drive currents for flying height setting with current values smaller than a tentative optimum drive current are supplied to a light source, respectively, heater power is supplied to a heater part, and touch down of a thermally-assisted magnetic recording head is detected. Tentative optimum heater power is determined based on a correlation between the heater power when the touch down is detected and each drive current for flying height setting. The tentative optimum drive current is supplied to the light source part; the tentative optimum heater power is supplied to the heater part; a reference signal is recorded in a magnetic recording medium; and flying height of the thermally-assisted magnetic recording head is set by determining whether or not the reference signal is recorded with the desired signal intensity.

Abstract translation: 虽然分别将用于飞行高度设定的多个驱动电流设置为具有小于暂定最佳驱动电流的电流值，但是分别将加热器电力提供给加热器部分，并且热辅助磁记录头的向下触摸 检测到。 基于检测到触摸时的加热器功率与用于飞行高度设置的每个驱动电流之间的相关性来确定暂定最佳加热器功率。 暂定最佳驱动电流被提供给光源部分; 将暂定的最佳加热器功率提供给加热器部件; 参考信号被记录在磁记录介质中; 并且通过确定参考信号是否以期望的信号强度被记录来设定热辅助磁记录头的飞行高度。

公开(公告)号：US20150294678A1

公开(公告)日：2015-10-15

申请号：US14250522

申请日：2014-04-11

Applicant: TDK Corporation

Inventor： Shinji HARA ,  Eiji KOMURA ,  Norikazu OTA ,  Daisuke MIYAUCHI ,  Tetsuya ROPPONGI ,  Koji SHIMAZAWA

IPC: G11B5/48 ,  G11B5/60 ,  G11B5/31

CPC classification number: G11B13/08 ,  G11B5/3106 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6076 ,  G11B5/6082 ,  G11B5/6088 ,  G11B7/1387 ,  G11B2005/0021

Abstract: A thermal assisted magnetic recording head has a magnetic head slider having an air bearing surface that is opposite to a magnetic recording medium, a core that can propagate laser light as propagating light, a plasmon generator that includes a generator front end surface facing the air bearing surface, and a main pole facing the air bearing surface, and a laser light generator that supplies the laser light to the core. The plasmon generator generates near-field light (NF light) at the generator front end surface to heat the magnetic recording medium. The main pole includes a main pole end surface that faces the air bearing surface and that is positioned in the vicinity of the generator front end surface, and emits a magnetic flux to the magnetic recording medium from the main pole end surface. At least a portion of the laser light that is not coupled with the plasmon generator thermally deforms the air bearing surface so that a part of the air bearing surface positioned closer to the leading side than the generator front end surface and the main pole end surface in the down track direction protrudes toward the magnetic recording medium.

Abstract translation: 热辅助磁记录头具有磁头滑块，其具有与磁记录介质相反的空气轴承表面，可以传播激光作为传播光的芯，等离子体激元发生器，其包括面向空气轴承的发生器前端表面 表面和面向空气轴承表面的主极;以及激光发生器，其将激光供应到芯。 等离子体发生器在发生器前端表面产生近场光（NF光），以加热磁记录介质。 主极包括面向空气轴承表面并且位于发生器前端表面附近的主极端面，并且从主极端面向磁记录介质发射磁通量。 不与等离子体发生器耦合的激光的至少一部分使空气轴承表面发生热变形，使得空气轴承表面的一部分比发生器前端表面和主极端表面更靠近前端 向下轨道方向朝向磁记录介质突出。

公开(公告)号：US20170287513A1

公开(公告)日：2017-10-05

申请号：US15084956

申请日：2016-03-30

Applicant: TDK Corporation

Inventor： Koji SHIMAZAWA ,  Shuji OKAME ,  Yoshihiro TSUCHIYA ,  Takafumi KOBAYASHI

IPC: G11B5/39 ,  G11B5/48

CPC classification number: G11B5/314 ,  G11B5/012 ,  G11B5/127 ,  G11B5/187 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermal assisted magnetic recording head that performs magnetic recording while locally heating a magnetic recording medium includes: a plasmon generator that generates a surface plasmon and that generates near-field light from the surface plasmon on a front end surface positioned on an air bearing surface opposing the magnetic recording medium; a dielectric body layer positioned around the plasmon generator; and an adhesion layer positioned between the plasmon generator and the dielectric body layer. The adhesion layer is made from at least one of IrOx, RuOx, NiOx and CoOx.

公开(公告)号：US20150040390A1

公开(公告)日：2015-02-12

申请号：US14492244

申请日：2014-09-22

Applicant: TDK CORPORATION ,  ROHM CO., LTD. ,  SAE MAGNETICS (H.K.) LTD.

Inventor： Koji SHIMAZAWA ,  Osamu SHINDO ,  Yoshihiro TSUCHIYA ,  Yasuhiro ITO ,  Kenji SAKAI

IPC: H05K3/34

CPC classification number: H05K3/3421 ,  B23K1/0016 ,  H01S5/02236 ,  H01S5/02272 ,  Y10T29/49144

Abstract: A manufacturing method of laser diode unit of the present invention includes steps: placing a laser diode on top of a solder member formed on a mounting surface of a submount, applying a pressing load to the laser diode and pressing the laser diode against the solder member, next, melting the solder member by heating the solder member at a temperature higher than a melting point of the solder member while the pressing load is being applied, and thereafter, bonding the laser diode to the submount by cooling and solidifying the solder member, thereafter, removing the pressing load, and softening the solidified solder member by heating the solder member at a temperature lower than the melting point of the solder member after the pressing load has been removed, and thereafter cooling and re-solidifying the solder member.

Abstract translation: 本发明的激光二极管单元的制造方法包括以下步骤：将激光二极管放置在形成在基座的安装表面上的焊料构件的顶部上，向激光二极管施加按压负载并将激光二极管按压在焊料构件上 接下来，在施加加压负荷的同时，通过在高于焊料构件的熔点的温度下加热焊料部件来熔化焊料部件，之后，通过冷却固化焊料部件将激光二极管接合到副安装台， 然后，除去加压负荷，通过在除去加压负荷后，在低于焊料构件的熔点的温度下加热焊料，软化固化的焊料，然后冷却并重新固化焊料。