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21. 发明专利

JP2005114674A Angle sensor 审中-公开
标题翻译：角度传感器
公开(公告)号：JP2005114674A
公开(公告)日：2005-04-28
申请号：JP2003352458
申请日：2003-10-10
申请人： Tdk Corp , Tdk株式会社
发明人： WAKAYAMA KATSUHIKO , SUGIMOTO SATOSHI , KASE TAKASHI
IPC分类号： G01C9/06
摘要： PROBLEM TO BE SOLVED: To provide an angle sensor which improves reliability and durability without deteriorating detection accuracy.
SOLUTION: The angle sensor 10 comprises a reed switch 14 having higher strength than that of conventional ones and a permanent magnet 12 made of a stronger metallic magnet than a conventional ferrite magnet. The sensor uses a magnetic fluid 13 containing magnetic fine particles having a minute average particle diameter of 2 to 7nm, preventing segregation of the magnetic fine particles.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在不降低检测精度的情况下提高可靠性和耐久性的角度传感器。
解决方案：角度传感器10包括具有比常规的强度高的簧片开关14和由比现有铁氧体磁体更强的金属磁体制成的永磁体12。传感器使用含有微小平均粒径为2〜7nm的磁性微粒的磁性流体13，防止了磁性微粒的偏析。版权所有（C）2005，JPO＆NCIPI

22. 发明专利

JP2005109222A Soft magnetism member, manufacturing method of the soft magnetism member and electronic apparatus 审中-公开
标题翻译：软磁体成员，软磁体成员和电子设备的制造方法
公开(公告)号：JP2005109222A
公开(公告)日：2005-04-21
申请号：JP2003342000
申请日：2003-09-30
申请人： Tdk Corp , Tdk株式会社
发明人： CHO TSUTOMU , HASHIMOTO YASUO , KAKINUMA AKIRA , WAKAYAMA KATSUHIKO , IIJIMA YASUSHI , KAYA GASHIYO , TAZAKI KAZUNORI , YAMANAKA SHUNICHI
IPC分类号： C25D5/56 , C22C19/03 , C22C19/07 , C22C38/00 , C23C14/14 , C23C14/20 , C23C28/00 , C25D7/00 , H01F1/00 , H01F10/14 , H01F41/26
摘要： PROBLEM TO BE SOLVED: To provide a laminated soft magnetism member having high radiation efficiency improvement effect, while restraining increase in SAR, and to provide a manufacturing method of the soft magnetic member and an electronic apparatus. SOLUTION: The method has a process of forming a foundation layer consisting of a conductive metal on a base film and a process of forming a soft magnetic metal layer on the foundation layer. The foundation layer is formed by oblique deposition. Surface magnetic property of the obtained soft magnetic member forms anisotropy. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供具有高辐射效率提高效果的同时抑制SAR增加的层叠软磁性部件，并提供软磁部件和电子设备的制造方法。解决方案：该方法具有在基膜上形成由导电金属构成的基础层和在基础层上形成软磁性金属层的工艺。基础层通过倾斜沉积形成。所得软磁性体的表面磁特性形成各向异性。版权所有（C）2005，JPO＆NCIPI

23. 发明专利

JP2004039703A Electromagnetic wave absorption sheet and its manufacturing metod 有权
公开(公告)号：JP2004039703A
公开(公告)日：2004-02-05
申请号：JP2002191516
申请日：2002-06-28
申请人： Tdk Corp , Tdk株式会社
发明人： WAKAYAMA KATSUHIKO , KARATSU SHINKO , CHO TSUTOMU , HASHIMOTO YASUO
IPC分类号： H01F1/00 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic-wave absorption sheet having excellent permeability for a high frequency, and to provide a method for manufacturing it. SOLUTION: An electromagnetic-wave absorption sheet 1 comprises insulation layers 20 on both sides of a magnetic layer 10. The magnetic layer 10 is formed with a number of magnetic powders 11 plastically deformed and closely entangled. An individual magnetic powder 11 is a compound magnetic substance formed of a soft magnetic metal phase 12 composed of flat-like soft magnetic metal powder and an insulation layer 13 comprising an insulation film with the soft magnetic metal phase 12 surfaced. A conductor layer 30 is formed on one of the insulation layers 20 formed on both sides of the magnetic layer 10, and the conductor layer 30 can also be covered by the insulation layer 20. COPYRIGHT: (C)2004,JPO

24. 发明专利

JP2001267140A NOISE FILTER 失效
公开(公告)号：JP2001267140A
公开(公告)日：2001-09-28
申请号：JP2000074270
申请日：2000-03-16
申请人： TDK CORP
发明人： ISHIKAWA HIROYASU , WAKAYAMA KATSUHIKO
IPC分类号： H01F1/16 , H01B7/00 , H01B11/06 , H01F1/44 , H01F17/06 , H03H7/01
摘要： PROBLEM TO BE SOLVED: To provide a noise filter which can obtain a superior noise absorbing characteristic in a broader range of frequency band. SOLUTION: The inner cylindrical core 1 of this noise filter 3 is composed of two inner cylindrical cores 1a and 1b. The cores 1a and 1b are made of wound bodies of a thin Mo Permalloy (R) belt having the composition of 5 wt.% Mo, 78 wt.% Ni, and 17 wt.% Fe and the thickness of 6 μm. The outer cylindrical core of the filter 3 is formed by winding a sheet member in which flat Fe-Si-Cr alloy powder is scattered in chlorinated polyethylene. The filter 3 is constituted by combining the inner and outer cylindrical cores 1 and 2 with each other.

25. 发明专利

JPH10289440A MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING METHOD 失效
公开(公告)号：JPH10289440A
公开(公告)日：1998-10-27
申请号：JP4628598
申请日：1998-02-12
申请人： TDK CORP , TOKYO JIKI INSATSU KK
发明人： CHO TSUTOMU , SHIGETA MASAO , KARATSU SHINKO , FUJII MARI , ISHIZAKA TSUTOMU , SAITO KATSUMI , WAKAYAMA KATSUHIKO , MIMURA SHOHEI , ITO MASAHIRO
IPC分类号： C09D5/23 , B22F9/04 , B22F9/08 , C09D7/12 , C22C38/00 , G11B5/02 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/706 , G11B5/73 , G11B5/80 , G11B11/14 , H01F1/047 , H01F10/14
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which can effectively prevent recording information from being altered and a method for recording and reproducing the magnetic recording medium. SOLUTION: This medium has a recording medium formed of crystalline alloy containing Fe and Al. This recording material consists of Fe and Al by >=90 atomic % in total and the atomic ratio Al/(Fe+Al) is 0.30 to 0.45. This recording material varies from an irregular phase to a regular phase by being heated. The saturated magnetism of this recording material is >=45 emu/g before being heated and decreases by >=35 emu/g owing to the heating. This recording material has dark parts observed in a bright field image of a transmission type electron microscope; and the dark parts occupy the recording material at a 15 to 60% area ratio and the maximum width of the dark parts is 10 to 200 nm.

26. 发明专利

JPH0734182A PRODUCTION OF FERROUS SOFT MAGNETIC SINTERED COMPACT AND FERROUS SOFT MAGNETIC SINTERED COMPACT OBTAINED BY THE SAME 失效
公开(公告)号：JPH0734182A
公开(公告)日：1995-02-03
申请号：JP19533793
申请日：1993-07-13
申请人： TDK CORP
发明人： MORI TERUO , YAMAGUCHI NORISHIGE , WAKAYAMA KATSUHIKO
IPC分类号： C22C33/02 , H01F1/22
摘要： PURPOSE:To produce a ferrous soft magnetic sintered compact high in performance and high in density by blending Fe powder and the powder of alloy componental metals or their ferroalloys in a prescribed ratio, subjecting it to mechanical alloying treatment and thereafter executing compacting and sintering. CONSTITUTION:Fe powder and the powder of at least one kind among metals to be alloyed with Fe or their ferroalloys are blended so as to regulate a desired chemical compsn. Next, this powdery mixture is treated by a mechanical alloying method or a mechanical grinding method. At this time, the same treatment is executed preferably by adding a lubricant such as stearic acid and wax by 0.1 to 5wt.%, and, as necessary,

27. 发明专利

JPS6171604A Magnetic fluid 失效
标题翻译：磁性液体
公开(公告)号：JPS6171604A
公开(公告)日：1986-04-12
申请号：JP19432284
申请日：1984-09-17
申请人： Tdk Corp
发明人： WAKAYAMA KATSUHIKO , HARADA TAKU
IPC分类号： C10M105/36 , C10M125/04 , C10M169/04 , C10N10/16 , C10N20/06 , C10N30/04 , C10N30/06 , C10N30/08 , C10N40/14 , H01F1/44
CPC分类号： H01F1/442
摘要： PURPOSE:To obtain a magnetic fluid which has higher saturation magnetization than that of the conventional magnetic fluid and which is practical, by employing a dicarboxylic diester medium. CONSTITUTION:Iron fine particles of 70-100Angstrom are employed. It is preferable to employ as a dicarboxylic diester a diester of a saturated aliphatic dicarboxylic acid having 6-10 carbon atoms of the formula I: ROOC(CH2)nCOOR. In the formula I, n=4-8, and preferable saturated aliphatic dicarboxylic acids include adipic acid (n=4), azelaic acid (n=7) and sebacic acid (n=8). R is a saturated aliphatic hydrocarbon residue preferably having 3-10 carbon atoms, particularly preferably, an octyl group. In other words, a preferable solvent is a compound formed by esterifying a saturated aliphatic dicarboxylic acid and an octyl alcohol (1-octanol or 2-ethylhexyl alcohol).
摘要翻译：目的：为了获得比常规磁性流体具有更高的饱和磁化强度的磁性流体，并且是实用的，通过使用二羧酸二酯介质。构成：使用70-100A的铁精细颗粒。优选使用具有式I的6-10个碳原子的饱和脂族二羧酸二羧酸二酯：ROOC（CH 2）n COOR。在式I中，n = 4-8，优选的饱和脂族二羧酸包括己二酸（n = 4），壬二酸（n = 7）和癸二酸（n = 8）。 R是优选具有3-10个碳原子的饱和脂族烃残基，特别优选为辛基。换句话说，优选的溶剂是通过使饱和脂肪族二羧酸和辛醇（1-辛醇或2-乙基己醇）酯化而形成的化合物。

28. 发明专利

JP2007138197A Method for heat-treating soft magnetic metal powder 有权
标题翻译：用于热处理软磁金属粉末的方法
公开(公告)号：JP2007138197A
公开(公告)日：2007-06-07
申请号：JP2005330340
申请日：2005-11-15
申请人： Tdk Corp , Tdk株式会社
发明人： MATSUKAWA ATSUHITO , WAKAYAMA KATSUHIKO
IPC分类号： B22F1/00 , B22F9/04 , C21D6/00 , C22C38/00 , H01F1/20
摘要： PROBLEM TO BE SOLVED: To provide a method for heat-treating a soft magnetic metal powder, which can increase an amount of the heat-treated flat soft magnetic metal powder and improve the productivity.
SOLUTION: In a heat treatment process for removing strain originating from flattening treatment for the Fe-Si-based or Fe-Si-Cr-based soft magnetic metal powder and forming a surface oxide layer, this heat treatment method includes setting a constant temperature at 275 to 450°C and controlling a heating rate to 10°C/hr or higher but lower than 180°C/hr till the temperature reaches the constant temperature. Thereby, the method inhibits sudden heat generation from occurring on the surface of the flat soft magnetic metal powder due to an oxidation reaction caused by oxygen contained in atmosphere, and prevents the flat soft magnetic metal powder from being overheated to the heat treatment temperature or higher.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供一种热处理软磁性金属粉末的方法，其可以增加热处理的扁平软磁性金属粉末的量并提高生产率。解决方案：在用于除去Fe-Si系或Fe-Si-Cr系软磁性金属粉末的平坦化处理的应变的热处理工艺中，形成表面氧化层，该热处理方法包括：恒温275〜450℃，加热速度控制在10℃/小时以上但低于180℃/小时，直至温度达到恒温。因此，该方法由于由大气中所含的氧引起的氧化反应而抑制平面软磁性金属粉末的表面产生突然的发热，并且防止平面软磁性金属粉末过热至热处理温度以上。版权所有（C）2007，JPO＆INPIT

29. 发明专利

JP2006131964A Method for manufacturing electromagnetic wave absorbing sheet 审中-公开
标题翻译：制造电磁波吸收片的方法
公开(公告)号：JP2006131964A
公开(公告)日：2006-05-25
申请号：JP2004323339
申请日：2004-11-08
申请人： Tdk Corp , Tdk株式会社
发明人： WAKAYAMA KATSUHIKO , MORIKOSHI HIROKI
IPC分类号： C21D6/00 , B22F3/00 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an electromagnetic wave absorbing sheet for improving the characteristic.
SOLUTION: In a heat treatment performed after obtaining a sheet-like manufactured material by piling flat-like soft magnetized metal powder forming an insulating film on the surface and giving the pressing force to the powder to join together with the flat-like soft magnetized metal powders, an average temperature rising speed till becoming the heat treatment temperature is controlled to ≤10°C/min, and the heat treatment temperature is controlled to 520-590°C and held for ≥60 min. Further, after holding the heat treatment temperature for prescribed time, it is desirable to lower the temperature of a heat treatment furnace at ≤3°C/min average temperature lowering speed. Furthermore, in the process for manufacturing the sheet-like material, it is desirable to give the pressing force to the flat-like soft magnetized metal powder so that the forming density of the sheet-like manufactured material becomes ≥5.2 g/cm
2 . In this way, the electromagnetic wave absorbing sheet having high characteristic such as ≥200 magnetic permeability μ at 10 MHz and ≥100 magnetic permeability μ at 100 MHz, is obtained.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于制造用于改善特性的电磁波吸收片的方法。解决方案：在通过在表面上堆积形成绝缘膜的扁平状软磁金属粉末获得片状制造材料之后进行热处理，并向粉末施加按压力以与扁平状结合在一起软磁金属粉末，直至成为热处理温度的平均升温速度控制在≤10℃/ min，热处理温度控制在520-590℃，保持≥60分钟。此外，在将热处理温度保持规定时间之后，期望将热处理炉的温度以≤3℃/ min的平均降温速度降低。此外，在片状材料的制造方法中，希望对扁平状软磁性金属粉末赋予压力，使得片状制造材料的成形密度为≥2.5g/ cm 2 > 2 。以这种方式，获得具有高特性的电磁波吸收片，例如10MHz时≥200磁导率μ，100MHz时≥100磁导率μ。版权所有（C）2006，JPO＆NCIPI

30. 发明专利

JP2006100848A Compound magnetic substance 有权
标题翻译：复合磁性物质
公开(公告)号：JP2006100848A
公开(公告)日：2006-04-13
申请号：JP2005331129
申请日：2005-11-16
申请人： Tdk Corp , Tdk株式会社
发明人： WAKAYAMA KATSUHIKO , CHO TSUTOMU
IPC分类号： H01F1/26 , H01F1/147 , H01F1/20
摘要： PROBLEM TO BE SOLVED: To provide a thin compound magnetic substance (for example, 0.4 mm or smaller) that is superior for attenuation effect at 100-400 MHz which poses problems in satisfying the EMC Standards. SOLUTION: The compound magnetic substance 1 is constituted by a soft magnetic metal phase 2 and an insulation phase 3 interposed between the soft magnetic metal phases 2. Here, the soft magnetic metal phase 2 is constituted by jointing flat soft magnetic metal powder, whose surface is coated with an insulating film by pressure welding. Further, the insulating film constitutes the insulation phase 3. The compound magnetic substance 1 makes the space factor of the soft magnetic metal phase 2 to the compound magnetic substance 1 50% or higher, further to 60-90%. Further, the compound magnetic substance 1 is also made into a sheet form, having a thickness range of 5 μm-0.4 mm. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供在100-400MHz的衰减效果方面优异的薄化合物磁性物质（例如，0.4mm以下），这在满足EMC标准方面存在问题。解决方案：复合磁性物质1由介于软磁性金属相2之间的软磁性金属相2和绝缘相3构成。这里，软磁性金属相2由平坦的软磁性金属粉末，其表面通过压力焊接覆盖绝缘膜。此外，绝缘膜构成绝缘相3.复合磁性物质1使复合磁性物质1的软磁性金属相2的空间因子进一步为60〜90％。此外，复合磁性物质1也制成厚度范围为5μm〜0.4mm的片状。版权所有（C）2006，JPO＆NCIPI

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