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1. 发明专利

DE69920117D1 未知
公开(公告)号：DE69920117D1
公开(公告)日：2004-10-21
申请号：DE69920117
申请日：1999-07-08
申请人： TDK CORP
发明人： MORO HIDEHARU , TSUKADA TAKEO , WAKAYAMA KATSUHIKO
IPC分类号： H01F1/22 , H01F1/06 , H01F1/26 , H01F41/02
摘要： A dust core ferromagnetic powder comprises a ferromagnetic metal powder, an insulating material, and a lubricant. The insulating material comprises a phenol resin and/or a silicone resin, and the lubricant comprises at least one compound selected from the group consisting of magnesium stearate, calcium stearate, strontium stearate, and barium stearate. It is possible to achieve a dust core having high saturation magnetic flux density, low losses, and satisfactory permeability with its dependence on frequency being improved.

2. 发明专利

DE69920117T2 未知
公开(公告)号：DE69920117T2
公开(公告)日：2005-11-17
申请号：DE69920117
申请日：1999-07-08
申请人： TDK CORP
发明人： MORO HIDEHARU , TSUKADA TAKEO , WAKAYAMA KATSUHIKO
IPC分类号： H01F1/22 , H01F1/06 , H01F1/26 , H01F41/02
摘要： A dust core ferromagnetic powder comprises a ferromagnetic metal powder, an insulating material, and a lubricant. The insulating material comprises a phenol resin and/or a silicone resin, and the lubricant comprises at least one compound selected from the group consisting of magnesium stearate, calcium stearate, strontium stearate, and barium stearate. It is possible to achieve a dust core having high saturation magnetic flux density, low losses, and satisfactory permeability with its dependence on frequency being improved.

3. 发明公开

EP1453368A4 COMPOSITE MAGNETIC ELEMENT, ELECTROMAGNETIC WAVE ABSORBING SHEET, PRODUCTION METHOD FOR SHEET-FORM ARTICLE, PRODUCTION METHOD FOR ELECTROMAGNETIC WAVE ABSORBING SHEET 审中-公开
标题翻译：复合磁性元素吸收片材无线电波，法钣金，形物品，方法吸收片材无线电波
公开(公告)号：EP1453368A4
公开(公告)日：2008-04-09
申请号：EP02778067
申请日：2002-11-08
申请人： TDK CORP
发明人： WAKAYAMA KATSUHIKO , KARATSU MASAHIRO , CHOU TSUTOMU , HASHIMOTO YASUO
IPC分类号： H05K9/00 , H01F1/18 , H01F1/24 , H01F1/26 , H01F41/02 , H01F41/16
CPC分类号： H05K9/0086 , H01F1/18 , H01F1/26 , H01F41/0246 , H05K9/0075
摘要： An electromagnetic wave absorbing sheet having a high-frequency and excellent transmittance, and a production method therefor. An electromagnetic wave absorbing sheet comprising insulation layers on the opposite surfaces of a magnetic layer. The magnetic layer is formed by plastically deforming and densely depositing many elements of magnetic powder. Each element of magnetic powder consists of a composite magnetic element formed of a soft magnetic metal phase consisting of flat soft magnetic metal powder and an insulation phase consisting of an insulation film formed on the surface of the soft magnetic metal phase. A conductor layer may be provided on one of the insulation layers located on the opposite sides of the magnetic layer, and the conductor layer may be covered with an insulation layer.

4. 发明公开

EP0903758A4 MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING METHOD 失效
标题翻译：磁记录介质与的磁记录再生
公开(公告)号：EP0903758A4
公开(公告)日：1999-09-08
申请号：EP98902758
申请日：1998-02-12
申请人： TDK CORP , TOKYO MAGNETIC PRINTING
发明人： CHOU TSUTOMU , SHIGETA MASAO , KARATSU MASAHIRO , FUJII MARI , ISHIZAKA CHIKARA , SAITO KATSUMI , WAKAYAMA KATSUHIKO , MIMURA SHOHEI , ITO MASAHIRO
IPC分类号： G06K19/06 , H01F1/06 , G11B5/66 , G11B11/14
CPC分类号： G06K19/06196 , Y10T428/2982
摘要： A magnetic recording medium capable of effectively preventing forgery of recording information by its alteration, and a method of recording and reproducing the information to and from the magnetic recording medium. The magnetic recording medium includes a recording material made of a crystalline alloy containing Fe and Al. The sum of Fe and Al is at lest 90 wt.% and an atomic ratio Al/(Fe+Al) is 0.30 to 0.45. The phase of this recording material changes from a disordered phase to an ordered phase upon heating. Saturation magnetization of this recording material is at least 45 emu/g before heating and drops by at least 35 emu/g by heating. A dark portion can be observed in a light field image of this recording material by a transmission electron microscope and occupies 15 to 60 % of the recording material in an area ratio, and its maximum width is 10 to 200 nm.

5. 发明公开

EP1426982A4 LAMINATED SOFT MAGNETIC MEMBER, SOFT MAGNETIC SHEET AND PRODUCTION METHOD FOR LAMINATED SOFT MAGNETIC MEMBER 审中-公开
标题翻译：层压软磁元件，夹层软磁片和方法，软磁四肢
公开(公告)号：EP1426982A4
公开(公告)日：2004-11-17
申请号：EP02762867
申请日：2002-08-27
申请人： TDK CORP
发明人： TASAKI KAZUNORI , IIJIMA YASUSHI , KAKINUMA AKIRA , WAKAYAMA KATSUHIKO , HASHIMOTO YASUO , CHOU TSUTOMU , KAYA MASANORI , ISHIKAWA HIROYASU , YAMASHITA SHINICHI
IPC分类号： B32B7/02 , C22C30/00 , C22C38/02 , C22C38/08 , C22C38/10 , C22C38/14 , H01F1/147 , H01F1/153 , H01F1/18 , H01F41/02 , H01Q1/24 , H01Q17/00 , H04B1/38 , H05K9/00 , H01F10/14 , B32B7/12 , B32B27/06 , B32B31/20 , C22C38/00 , H01F1/14 , H01F10/16 , H01F41/26
CPC分类号： H05K9/0088 , C22C30/00 , C22C38/02 , C22C38/08 , C22C38/10 , C22C38/14 , H01F1/14725 , H01F1/15375 , H01F1/18 , H01F41/0226 , H01F41/0233 , H01Q1/245 , H01Q17/00 , H04B1/3838 , Y10T428/32
摘要： A laminated soft magnetic member 5 which consists of a laminate formed by alternately stacking a soft magnetic layer 7 up to 1 mum in thickness and an insulation layer 6, and has a total thickness of up to 0.2 mm. Being excellent in permittivity in a high frequency band exceeding 800 MHz, the member can improve the radiation efficiency of an electromagnetic wave on a side opposite to a human head by being pasted to a cellular phone, and is suitably used as an SAR expediting member.
摘要翻译：一种层叠软磁性构件5，其包括其中1微米或更小厚的软磁性金属层7和绝缘层6的层叠体交替层叠并且是0.2mm或更小的总厚度，具有优异的透气性在高频带-超过800兆赫，并且相应地，通过附着到蜂窝电话，可以提高在与一个人的身体的头部侧的电磁波的辐射效率并且是优选的作为针对SAR的对策的部件。

6. 发明专利

JP2011134755A Anti-electromagnetic noise member 审中-公开
标题翻译：抗电磁噪声会员
公开(公告)号：JP2011134755A
公开(公告)日：2011-07-07
申请号：JP2009290411
申请日：2009-12-22
申请人： Tdk Corp , Tdk株式会社
发明人： SUZUKI EIJI , WAKAYAMA KATSUHIKO
IPC分类号： H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide an anti-electromagnetic noise member exhibiting an excellent suppression effect against a high frequency electromagnetic noise having a frequency in a GHz band.
SOLUTION: The anti-electromagnetic noise member includes a mixture of various types of metal magnetic powders and carbon fibers in a resin serving as a binder (binding agent) formed into a predetermined shape such as a sheet shape, which satisfies a relation represented by formula (1): R=ρ1/ρ2≥0.52. In the formula, R is a density ratio of the anti-electromagnetic noise member, ρ1 is a measured density of the anti-electromagnetic-noise member after molding, and ρ2 is a theoretical density of the (virtual) mixture containing the magnetic powders and the carbon fibers in a ratio same as a ratio when they are used for the anti-electromagnetic noise member. Thus, the magnetic field reduction effect ΔH against the magnetic noise having the frequency in the GHz band can be greatly improved.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供对具有GHz频带频率的高频电磁噪声具有优异抑制效果的抗电磁噪声构件。解决方案：抗电磁噪声构件包括形成为预定形状如片状的用作粘合剂的树脂（粘合剂）中的各种类型的金属磁性粉末和碳纤维的混合物，其满足关系由公式（1）表示：R =ρ1/ρ2≥0.52。式中，R为防电磁噪声部件的密度比，ρ1为成型后的抗电磁噪声部件的测定密度，ρ2为包含磁性粉末的（虚拟）混合物的理论密度，碳纤维的比例与用于抗电磁噪声构件的比例相同。因此，可以大大提高对具有GHz频带的频率的磁噪声的磁场降低效果ΔH。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2006135136A Process for producing electromagnetic wave absorption sheet, method for screening powder, electromagnetic wave absorption sheet 审中-公开
标题翻译：制造电磁波吸收片的方法，筛选粉末的方法，电磁波吸收片
公开(公告)号：JP2006135136A
公开(公告)日：2006-05-25
申请号：JP2004323340
申请日：2004-11-08
申请人： Tdk Corp , Tdk株式会社
发明人： MORIKOSHI HIROKI , WAKAYAMA KATSUHIKO
IPC分类号： H05K9/00 , B07B7/08 , B32B15/08 , H01F1/00 , H01F1/24 , H01F1/33
摘要： PROBLEM TO BE SOLVED: To provide a process for producing an electromagnetic wave absorption sheet in which the characteristics can be enhanced furthermore. SOLUTION: Powder P0 pulverized and flattened through a pulverization process is thrown into a centrifugal wind power selector 50 and sorted into flat soft magnetic metal powder P1 and unflat powder P2 by the difference of centrifugal force and drag acting in air flow swirling in a chamber 51. Characteristics are enhanced by removing the unflat powder P2 and using the flat soft magnetic metal powder P1. Preferably, the sorted unflat powder P2 is reused as material powder in the pulverization process. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种其中可以进一步提高特性的电磁波吸收片的制造方法。解决方案：通过粉碎过程粉碎和平整的粉末P0被投入到离心风力选择器50中，并通过在气流旋转中的离心力和阻力的差异将其分选成扁平的软磁性金属粉末P1和不平坦的粉末P2 通过去除不平坦的粉末P2并使用扁平的软磁性金属粉末P1来增强特性。优选地，在粉碎过程中，分选的不平坦粉末P2被重新用作材料粉末。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2002289414A COMPOSITE MAGNETIC MATERIAL, METHOD FOR MANUFACTURING SHEET-LIKE ARTICLE, METHOD FOR MANUFACTURING COMPOSITE MAGNETIC MATERIAL 审中-公开
公开(公告)号：JP2002289414A
公开(公告)日：2002-10-04
申请号：JP2001345308
申请日：2001-11-09
申请人： TDK CORP
发明人： WAKAYAMA KATSUHIKO , CHO TSUTOMU
IPC分类号： H01F1/00 , H01F1/24 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide a composite magnetic material which has an excellent effect of attenuating noises of 100 to 400 MHz so as to meet and EMC standard and is very thin (e.g. 0.4 mm or below in thickness), and to provide a method for manufacturing the same. SOLUTION: The composite magnetic material 1 is composed of soft magnetic metal phases 2 and insulating phases 3 interposed between the soft magnetic metal phases 2. At this point, the soft magnetic metal phase 2 is formed by pressure-bonding flat soft magnetic metal powder coated with insulating films. The insulating phase 3 is formed of the insulating film. The space factor of the soft magnetic metal phase 2 to the composite magnetic material 1 can be set at 50% or above. Furthermore, the composite magnetic material 1 can be formed into a sheet shape having a thickness of 5 μm to 0.4 mm.

9. 发明专利

JPS6395592A METHOD FOR DETECTING MAGNETIC MARKING AND MAGNETIC MARKING SHEET 失效
公开(公告)号：JPS6395592A
公开(公告)日：1988-04-26
申请号：JP24110886
申请日：1986-10-09
申请人： TDK CORP
发明人： ODAKAWA YOSHIMOTO , YANAGISAWA YASUSHI , NARUMIYA YOSHIKAZU , WAKAYAMA KATSUHIKO
IPC分类号： G06K19/10 , B42D15/02 , B42D15/10 , C09D5/23 , C09D109/00 , C09D121/00 , C09D123/02 , C09D123/28 , C09D125/00 , C09D177/00 , G06K17/00 , G06K19/00 , G06K19/06 , G11B5/735 , G11B5/74 , G11B5/80
摘要： PURPOSE:To visualize the mark-like magnetization of a magnetic marking sheet and to detect a secret seal by employing the magnetic marking sheet which can be magnetized in a specific mark shape easily and stably. CONSTITUTION:The magnetic marking sheet has a magnetic layer 2, an adhesive layer 4 and a releasing paper 4. The marking composed of prescribed characters, numerals, graphics and symbols or combinations of them is magnetized in a mark shape, and a small piece in prescribed size sticks to a thing to be stuck. A magnetism visualizing device 10 used as a detection method fixes and holds a transparent window member 13 and a foil number 14 almost in parallel with the aid of a frame member 11. A space formed with the frame member 11, the transparent window part 13 and the foil member 14 is used for a magnetic liquid holding chamber 15, which contains and holds a magnetic liquid in a hemitically sealed state. Then the foil member 14 is directly brought into contact with the magnetic marking sheet 1 or brought into contact with the sheet 1 through a corrugated board, thereby obtaining a magnetized visual image.

10. 发明专利

JP2009246158A Magnetic sheet and rfid using the same, and reader 审中-公开
标题翻译：使用它的磁性片和RFID以及阅读器
公开(公告)号：JP2009246158A
公开(公告)日：2009-10-22
申请号：JP2008091290
申请日：2008-03-31
申请人： Tdk Corp , Tdk株式会社
发明人： MATSUURA TOSHINORI , WAKAYAMA KATSUHIKO
IPC分类号： H05K9/00 , G06K17/00 , G06K19/07 , G06K19/077
摘要： PROBLEM TO BE SOLVED: To enhance material choice for a magnetic sheet arranged between a loop coil included in an RFID or a reader thereof and a radio wave disturbing body. SOLUTION: The magnetic sheet has a surface resistance of ≥10 9 and less than 10 12 Ω/square, and the real part μ' of complex relative permeability at a communication frequency band is ≥20 and less than 30. Since the surface resistance of the magnetic sheet is ≥10 9 and less than 10 12 Ω/square, excellent communication characteristics are obtained when μ' is ≥20 even though it is less than 30. Consequently, material choice is enhanced for the magnetic sheet. Namely, any common material whose μ' is ≥20 and less than 30 can be selected. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了增强布置在包括在RFID中的环形线圈或其读取器之间的磁片的材料选择和无线电波干扰体。
解决方案：磁性片具有≥10 9 和小于10 12 Ω/平方的表面电阻，复数相对磁导率的实部μ' 通信频带≥20且小于30.由于磁片的表面电阻为≥10 9 且小于10 12 Ω/平方，因此具有良好的通信特性即使小于30，μ'≥20也可获得。因此，磁性片的材料选择得到增强。即，可以选择μ'≥20且小于30的任何普通材料。版权所有（C）2010，JPO＆INPIT

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