公开(公告)号：WO1998019304A1

公开(公告)日：1998-05-07

申请号：PCT/JP1997003486

申请日：1997-09-30

Applicant: TDK CORPORATION ,  SOENO, Yoshikazu ,  ICHIKAWA, Shinji ,  TSUNA, Takamitsu ,  SATO, Isamu

Inventor： TDK CORPORATION

IPC: G11B21/10

CPC classification number: G11B5/59627 ,  G11B5/5552 ,  G11B5/58 ,  G11B7/0937 ,  G11B21/10 ,  G11B21/20

Abstract: A recording/reproducing head has a slider (2) in which an electromagnetic transducer (or an optical module) (1) is provided, an actuator (4) and a suspension (3). The actuator has a fixed part (43) and a movable part (44) and at least (2) beam parts with which the movable part (44) is connected to the fixed part (43). The beam parts have displacement producing parts (41) which are expanded/contracted by an inverse piezoelectric effect or an electrostriction effect. The fixed part (43) is connected to the suspension (3) and the movable part (44) is fixed to the slider (2). If the displacement producing parts (41) are expanded/contracted, the displacement producing parts (41) are deflected and the linear displacement, arc-form displacement or rotary displacement of the movable part (44) is produced relatively to the fixed part (43) and, further, the electromagnetic transducer (1) is displaced to describe a linear or arc-form path which crosses recording tracks. The actuator (4) consists of a plate-shape unit which is made of piezoelectric or electrostrictive material and has a hole part and/or a cut part to form the fixed part (43), the movable part (44) and the beam parts integrally. If the summation of driving voltages applied to the respective displacement producing parts is so controlled as to be constant at any time when the positioning in a direction crossing the recording tracks is carried out by using the actuator having the construction shown in the figure, the position fluctuation of the electromagnetic transducer in a direction perpendicular to the surface of a recording medium can be suppressed.

Abstract translation: 记录/再现头具有其中设置有电磁换能器（或光学模块）（1）的滑块（2），致动器（4）和悬架（3）。 致动器具有固定部分（43）和可移动部分（44）和至少（2）梁部分，可动部分（44）通过该部分连接到固定部分43。 光束部分具有通过反压电效应或电致伸缩效应而膨胀/收缩的位移产生部分（41）。 固定部分43连接到悬架3上，可动部分44固定在滑块2上。 如果位移产生部（41）膨胀/收缩，位移产生部（41）偏转，并且相对于固定部（43）产生可动部（44）的线性位移，圆弧形位移或旋转位移 ），此外，电磁换能器（1）被移位以描述与记录轨道交叉的线性或弧形路径。 致动器（4）包括由压电或电致伸缩材料制成并具有孔部分和/或切割部分以形成固定部分（43）的板状单元，可动部分（44）和梁部分 一体。 如果通过使用具有图所示结构的致动器来执行施加到各个位移产生部分的驱动电压的总和，以便在通过使用具有图所示结构的致动器执行与记录轨道交叉的方向上的定位时， 可以抑制电磁换能器在与记录介质的表面垂直的方向上的波动。

公开(公告)号：WO1998001856A1

公开(公告)日：1998-01-15

申请号：PCT/JP1997002300

申请日：1997-07-03

Applicant: TDK CORPORATION ,  TAKAHARA, Seishi

Inventor： TDK CORPORATION

IPC: G11B07/125

CPC classification number: G11B7/127 ,  G11B7/126 ,  G11B33/08

Abstract: An optical information recorder/reproducer whose laser source is driven through a high frequency superposing circuit. The high frequency superposing circuit and the electric terminals of the laser source are enclosed in a shielding case which consists of a pair of half-cases. The half-cases have wall faces in contact with each other. A capacitor is connected between the ground and at least one of the outside connection lines of the high frequency superposing circuit and the laser source. The connection of the capacitor and the outside connection line is near the wall faces of the shielding case, and the outside connection line connected to the capacitor is led out through a gap between the overlapping wall faces of the two half-cases.

Abstract translation: 一种光学信息记录器/再现器，其激光源通过高频叠加电路驱动。 高频叠加电路和激光源的电端子封装在由一对半壳组成的屏蔽壳中。 这些半壳体具有彼此接触的壁面。 电容器连接在地与高频叠加电路和激光源的至少一个外部连接线之间。 电容器和外部连接线的连接靠近屏蔽壳的壁面，并且连接到电容器的外部连接线通过两个半壳体的重叠壁面之间的间隙被引出。

公开(公告)号：WO1997049182A1

公开(公告)日：1997-12-24

申请号：PCT/JP1997000872

申请日：1997-03-18

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  INOUE, Kenji ,  SATO, Katsuo

IPC: H03H09/145

CPC classification number: H03H9/02834 ,  H03H9/0259

Abstract: A surface acoustic wave device having interdigital type electrodes on the surface of a substrate composed of a single crystal of langasite belonging to a point group (32). The substrate is given a small absolute value of SAW speed temperature coefficient TCV, a large electromechanical coupling coefficient k , and a slow SAW speed by optimizing the combination of the cutting angle of the substrate from the single crystal and the surface acoustic wave propagating direction. Therefore, the temperature stability of the device can be improved and the passing bandwidth of the device as a filter can be widened. In addition, the size of the device can be reduced and, especially, excellent characteristics as the surface acoustic wave film for intermediate frequencies of mobile communication terminal equipment can be obtained.

Abstract translation: 一种表面声波装置，其在由属于点组（32）的由单晶的单晶构成的基板的表面上具有叉指型电极。 通过优化基板从单晶的切割角与表面声波的组合，给出基板具有小的SAW速度温度系数的绝对值TCV，大的机电耦合系数k <2和慢的SAW速度 传播方向。 因此，能够提高装置的温度稳定性，能够扩大作为过滤器的装置的通过带宽。 此外，可以减少装置的尺寸，特别是可以获得用于移动通信终端设备的中频的表面声波膜的优异特性。

公开(公告)号：WO1996013046A1

公开(公告)日：1996-05-02

申请号：PCT/JP1995002125

申请日：1995-10-17

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  SATO, Akira ,  KAWANO, Naoki ,  NOMURA, Takeshi ,  NAKANO, Yukie ,  ARASHI, Tomohiro ,  YAMAMATSU, Junko

IPC: H01G04/12

CPC classification number: B32B18/00 ,  B32B2311/22 ,  C04B35/4682 ,  C04B35/6264 ,  C04B35/63424 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3205 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3225 ,  C04B2235/3239 ,  C04B2235/3256 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/6582 ,  C04B2235/6584 ,  C04B2235/6588 ,  C04B2235/663 ,  C04B2235/765 ,  C04B2235/768 ,  C04B2235/785 ,  C04B2237/12 ,  C04B2237/346 ,  C04B2237/40 ,  C04B2237/405 ,  C04B2237/704 ,  C04B2237/706 ,  H01G4/1227

Abstract: A multilayer ceramic chip capacitor which meets the X7R characteristic, namely, the temperature characteristic of a capacitor, has an excellent DC bias characteristic, and is hardly broken down dielectrically, the capacitance of which does not change much with time in a DC electric field, and the insulation resistance IR of which endures a long accelerated life test. In the first mode of this invention, a dielectric layer contains BaTiO3 as a pricipal constituent, and MgO, Y2O3, BaO, and CaO and/or SiO2 as accessory constituents at a prescribed composition. In the second mode, MnO, and V2O5 and/or MoO3 are added to the dielectric layer as accessory constituents at a prescribed composition. In the first mode, the mean crystal grain size of the dielectric layer is below 0.45 mu m and wide diffraction lines are formed by the overlap of diffraction lines of (200)-face with the diffraction lines of (002)-face in the X-ray diffraction chart of the dielectric layer. The half-value widths of the wide diffraction lines are below 0.35 DEG .

Abstract translation: 符合X7R特性的多层陶瓷片式电容器，即电容器的温度特性，具有优异的直流偏压特性，并且几乎不会在直流电场中电容随时间变化的介电分解， 其绝缘电阻IR耐久长寿命试验。 在本发明的第一方式中，电介质层含有BaTiO 3作为主要成分，MgO，Y2O3，BaO，CaO和/或SiO 2作为附加成分。 在第二模式中，MnO和V2O5和/或MoO3以规定的组成添加到作为辅助成分的介电层中。 在第一模式中，电介质层的平均晶粒尺寸低于0.45μm，并且通过（200）面的衍射线与X（002）面的衍射线的重叠，形成宽的衍射线 电介质层的射线衍射图。 宽衍射线的半值宽度低于0.35°。

公开(公告)号：WO1994028544A1

公开(公告)日：1994-12-08

申请号：PCT/JP1994000820

申请日：1994-05-23

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  ABE, Shinji ,  NAKASHIMA, Yutaka ,  HORIGOME, Eiji ,  YAHATA, Toshikazu

IPC: G11B05/702

CPC classification number: G11B5/7021 ,  Y10S428/90 ,  Y10T428/31609

Abstract: A magnetic recording medium comprising a nonmagnetic supporting layer and, formed thereon, a magnetic layer comprising a ferromagnetic powder dispersed in a binder. The binder is composed of 30-70 wt.% of a polyurethane resin A having a glass transition temperature (Tg) satisfying the condition: 60 DEG C

Abstract translation: 一种磁记录介质，包括非磁性支撑层，并在其上形成包含分散在粘合剂中的铁磁性粉末的磁性层。 粘合剂由30-70重量％的玻璃化转变温度（Tg）满足条件为：60℃，Tg <80℃的聚氨酯树脂A和具有玻璃化转变温度的另一个聚氨酯树脂B 温度（Tg）满足条件：0℃

公开(公告)号：WO1993022777A1

公开(公告)日：1993-11-11

申请号：PCT/JP1992000902

申请日：1992-07-15

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  TAGUCHI, Hitoshi ,  HIRATA, Fumihiko ,  TAKEISHI, Taku ,  MORI, Teruo

IPC: H01F01/11

CPC classification number: C04B35/26 ,  C04B35/2683 ,  C04B35/632 ,  H01F1/11 ,  H01F1/112

Abstract: A slurry containing ferrite particles and an organic solvent is wet molded in a magnetic field while removing the organic solvent, to obtain a molded article. This molded article is sintered to provide an anisotropic ferrite magnet. In this case, a surfactant is added to the slurry during wet molding. In addition to the surfactant or in place thereof, the ferrite particles are pulverized so as to impart at least 1 x 10 of strain of a (206) plane measured by X-ray diffraction, and to reduce iHc preferably below 3.5 kOe. In these ways, orientation of the molded article can be drastically improved, and extremely high magnetic characteristics can be obtained.

Abstract translation: 含有铁氧体颗粒和有机溶剂的浆料在除去有机溶剂的同时在磁场中湿成型，得到成型品。 将该成形品烧结成各向异性铁氧体磁铁。 在这种情况下，在湿法成型期间将浆料中加入表面活性剂。 除了表面活性剂或其代替之外，将铁氧体颗粒粉碎以使得通过X射线衍射测量的（206）面的至少1×10 -4的应变，并将iHc优选降低至3.5以下 奥斯特。 通过这些方式，可以显着提高成形体的取向性，能够获得极高的磁特性。

公开(公告)号：WO1993008672A1

公开(公告)日：1993-04-29

申请号：PCT/JP1992000619

申请日：1992-05-14

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  KAWAMURA, Keizou ,  KOBAYASHI, Makoto ,  NAKAMURA, Akira ,  YASUDA, Norikazu ,  KONDOH, Suguru ,  MIURA, Taro ,  NAKAI, Shinya ,  FUJII, Tadao

IPC: H05K03/46

CPC classification number: B32B18/00 ,  C04B37/003 ,  C04B2237/10 ,  C04B2237/124 ,  C04B2237/125 ,  C04B2237/126 ,  C04B2237/34 ,  C04B2237/341 ,  C04B2237/343 ,  C04B2237/346 ,  C04B2237/348 ,  C04B2237/62 ,  C04B2237/68 ,  C04B2237/704 ,  H01G4/30 ,  H01L21/4857 ,  H01L21/4867 ,  H01L23/49805 ,  H01L23/49883 ,  H01L23/5383 ,  H01L23/5384 ,  H01L2924/0002 ,  H01L2924/09701 ,  H01L2924/19105 ,  H05K1/0306 ,  H05K1/092 ,  H05K3/403 ,  H05K3/46 ,  H05K3/4629 ,  H05K2203/128 ,  H01L2924/00

Abstract: A multilayer ceramic part in which its inner conductor is compacted, and the loss of a line is reduced, the performance such as the Q value is improved, and the variation of the performance is reduced. The paste of the inner conductor is made of powder of conductor, preferably silver or copper, and a glass frit, if necessary. The layers of the paste of the inner conductor and dielectric ceramic material layers are stacked and are baked simultaneously at a temperature higher than the melting point of the conductor.

公开(公告)号：WO1992022893A1

公开(公告)日：1992-12-23

申请号：PCT/JP1992000753

申请日：1992-06-12

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  HITOMI, Yohsuke ,  IKARASHI, Tsunehiko

IPC: G11B05/708

CPC classification number: G11B5/708 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/265 ,  Y10T428/30

Abstract: To improve electromagnetic conversion characteristics by lowering a friction coefficient of a coating type magnetic recording medium and improving travelling stability, a magnetic layer contains carbon black having a mean primary particle diameter of 25 to 65 mνm and a standard deviation σ of a particle diameter distribution of 12 to 24 mνm.

Abstract translation: 为了通过降低涂布型磁记录介质的摩擦系数和通过提高滚动稳定性来改善电磁转换特性，磁性层含有具有 平均主粒径在25-65mm之间，粒度分布在12-24mm之间的西格玛标准偏差。

公开(公告)号：WO1992018978A1

公开(公告)日：1992-10-29

申请号：PCT/JP1992000153

申请日：1992-02-17

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  TOMINAGA, Junji ,  DOHI, Hideki

IPC: G11B07/24

CPC classification number: G11B7/243 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2578 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/2595 ,  G11B2007/24306 ,  G11B2007/24308 ,  G11B2007/2432 ,  G11B2007/24322 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/31678

Abstract: A recording thin film, dielectric thin film, and reflective thin film are formed on a substrate in order. When a recording laser beam is applied to the substrate, an inorganic compound in the recording thin film is decomposed to produce gas and air-gaps are produced in the recording thin film. Because the substrate is heated and softened, recesses are produced on the substrate surface due to the pressure of the produced gas. Optical conditions are changed by the air-gaps and recesses and the reflectance is extremely decreased at the laser applied portion. Therefore, reproduction corresponding to CD standard is possible. Moreover, because the inorganic compound which is thermally decomposed to produce gas is used without using any organic dye, the medium realizes data storage with a satisfactory optical resistance and a high reliability and provides a high recording sensitivity.

公开(公告)号：WO1992016939A1

公开(公告)日：1992-10-01

申请号：PCT/JP1992000293

申请日：1992-03-11

Applicant: TDK CORPORATION ,  KURODA, Kazuhiro ,  ISHIKAWA, Yasushi ,  TANAKA, Kazushi

Inventor： TDK CORPORATION

IPC: G11B05/70

CPC classification number: G11B5/735

Abstract: A magnetic recording medium having no interlayer adhesion and a low friction. Provided is a back layer capable of providing the magnetic recording medium having a good travelling performance, by combining conductive carbons with each other, whose specific surface areas and DBP oil absorptions are different from each other, and by adjusting the mixing ratio of the whole carbon to a binder. In a magnetic recording medium having a magnetic layer on one side of a non-magnetic support and a back layer including carbon black, an inorganic powder, and a binder on the opposite side, the carbon black is a mixture of the one of 20-80 m2/g in specific surface area and 120-200 ml/100 g in DBP oil absorption, and the one of 600-900 m2/g in specific surface area and 180-250 ml/100 g in DBP oil absorption, and the mixture ratio of the two kinds of the carbon blacks is within the range of from 8:2 to 9.5:0.5, and further, the ratio of the whole quantity of the carbon black to the binder is 35-75 weight %, preferably 40-70 weight %.