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1. 发明专利

DK348089A 未知
公开(公告)号：DK348089A
公开(公告)日：1990-01-15
申请号：DK348089
申请日：1989-07-13
申请人： TDK CORP
发明人： IWAYA SHOICHI , MASUMURA HITOSHI , TAGUCHI HARUO , HAMADA MUNEMITSU , SOGABE TOMOHIRO , TAKAHASHI SHIGEYA , SATOH HIROYUKI
IPC分类号： C04B35/46 , C04B35/47 , C04B35/472 , H01C7/02 , H01C7/04 , H01C7/00
摘要： A semiconductive ceramic composition capable of permitting its resistance-temperature characteristics and resistance to be controlled as desired and a firing temperature of the composition to be lowered to a degree sufficient to facilitate the mass-production at a low cost. The composition contains a main component consisting of SrO, PbO and TiO2 and is subjected to firing in an oxidizing atmosphere. The composition may contain at least one of SiO2 and M as a minor component. A variation in amount of the main and minor components permits characteristics and properties of the composition to be varied as desired.

2. 发明专利

DE68911774T2 未知
公开(公告)号：DE68911774T2
公开(公告)日：1994-07-28
申请号：DE68911774
申请日：1989-07-04
申请人： TDK CORP
发明人： IWAYA SHOICHI , MASUMURA HITOSHI , TAGUCHI HARUO , HAMADA MUNEMITSU , SOGABE TOMOHIRO , TAKAHASHI SHIGEYA , SATOH HIROYUKI
IPC分类号： C04B35/46 , C04B35/47 , C04B35/472 , H01C7/02 , H01C7/04 , H01L29/24 , H01C7/00
摘要： A semiconductive ceramic composition capable of permitting its resistance-temperature characteristics and resistance to be controlled as desired and a firing temperature of the composition to be lowered to a degree sufficient to facilitate the mass-production at a low cost. The composition contains a main component consisting of SrO, PbO and TiO2 and is subjected to firing in an oxidizing atmosphere. The composition may contain at least one of SiO2 and M as a minor component. A variation in amount of the main and minor components permits characteristics and properties of the composition to be varied as desired.

3. 发明专利

DE68911774D1 未知
公开(公告)号：DE68911774D1
公开(公告)日：1994-02-10
申请号：DE68911774
申请日：1989-07-04
申请人： TDK CORP
发明人： IWAYA SHOICHI , MASUMURA HITOSHI , TAGUCHI HARUO , HAMADA MUNEMITSU , SOGABE TOMOHIRO , TAKAHASHI SHIGEYA , SATOH HIROYUKI
IPC分类号： C04B35/46 , C04B35/47 , C04B35/472 , H01C7/02 , H01C7/04 , H01L29/24 , H01C7/00
摘要： A semiconductive ceramic composition capable of permitting its resistance-temperature characteristics and resistance to be controlled as desired and a firing temperature of the composition to be lowered to a degree sufficient to facilitate the mass-production at a low cost. The composition contains a main component consisting of SrO, PbO and TiO2 and is subjected to firing in an oxidizing atmosphere. The composition may contain at least one of SiO2 and M as a minor component. A variation in amount of the main and minor components permits characteristics and properties of the composition to be varied as desired.

4. 发明专利

DK348089D0 未知
公开(公告)号：DK348089D0
公开(公告)日：1989-07-13
申请号：DK348089
申请日：1989-07-13
申请人： TDK CORP
发明人： IWAYA SHOICHI , MASUMURA HITOSHI , TAGUCHI HARUO , HAMADA MUNEMITSU , SOGABE TOMOHIRO , TAKAHASHI SHIGEYA , SATOH HIROYUKI
IPC分类号： C04B35/46 , C04B35/47 , C04B35/472 , H01C7/02 , H01C7/04 , H01C7/00
摘要： A semiconductive ceramic composition capable of permitting its resistance-temperature characteristics and resistance to be controlled as desired and a firing temperature of the composition to be lowered to a degree sufficient to facilitate the mass-production at a low cost. The composition contains a main component consisting of SrO, PbO and TiO2 and is subjected to firing in an oxidizing atmosphere. The composition may contain at least one of SiO2 and M as a minor component. A variation in amount of the main and minor components permits characteristics and properties of the composition to be varied as desired.

5. 发明专利

JPH0774039A MANUFACTURE OF ROTARY TRANSFORMER 失效
公开(公告)号：JPH0774039A
公开(公告)日：1995-03-17
申请号：JP24030993
申请日：1993-09-02
申请人： TDK CORP
发明人： SAITO YUTAKA , SHIMAZAKI TATSUYA , KAWAMURA JUNICHIRO , KINOSHITA KOJI , TAKAHASHI SHIGEYA
IPC分类号： H01F38/14 , H01F41/04
摘要： PURPOSE:To obtain a manufacturing method, of a rotary transformer, which can automate a manufacturing process, which can reduce manufacturing costs and which can accommodate the smaller size and the higher density of coils due to the smaller size of the rotary transformer. CONSTITUTION:Ring-shaped recessed grooves 3A to 3E are formed on one face of a disc-shaped ferrite core 1, a conductive paste is printed and sintered on the ring-shaped recessed grooves 3A to 3E, ring-shaped conductive layers are formed, and spiral coils 6A to 6E are formed of the ring-shaped conductive layers by an etching operation. Thereby, the higher density of the spiral coils 6A to 6E is realized, and their manufacturing process can be automated.

6. 发明专利

JPH03201418A IMPEDANCE ELEMENT 失效
公开(公告)号：JPH03201418A
公开(公告)日：1991-09-03
申请号：JP33858089
申请日：1989-12-28
申请人： TDK CORP
发明人： WATABE SEIJI , TAKAHASHI SHIGEYA
IPC分类号： H01F3/08 , H01F17/00 , H01F17/04
摘要： PURPOSE:To obtain a chip type impedance element having high impedance value by a method wherein a plurality of through holes are formed in a magnetic ferrite calcinated member in two rows respectively in longitudinal direction and horizontal direction, and a conducting path is formed through the above- mentioned through holes. CONSTITUTION:A first basic material 20, consisting of Mn-Ni-Zn ferrite and the like, is formed in rectangular parallelepiped shape. Eight through holes 11 to 18 are formed on the above-mentioned ferrite base material 20. In the longitudinal direction (Y-direction), an interval Y0 is provided and two lines having four through holes each are lined in horizontal direction separated from the side face in the amount of Y1 and Y2, are formed. In the horizontal direction (X-direction), four lines having two each of through holes, which are arranged in longitudinal direction at intervals X01, X02 and X03 and the outermost one is separated from the side face by the amount of X1 and X2, are formed. In this construction, the current direction of each of the two rows of through holes in longitudinal direction is reversed, and the current direction within each row of through holes becomes equal. The above-mentioned method of connection is effective to increase impedance.

7. 发明专利

JPH03161910A IMPEDANCE ELEMENT 失效
公开(公告)号：JPH03161910A
公开(公告)日：1991-07-11
申请号：JP30080989
申请日：1989-11-21
申请人： TDK CORP
发明人： TAKAHASHI SHIGEYA , YOKOYAMA KAZUO , WATABE SEIJI
IPC分类号： H01F1/34 , H01F3/08 , H01F17/04
摘要： PURPOSE:To secure excellent noise suppression effect in the frequency region exceeding 500MHz by a method wherein, within an impedance element using ferrite element, the ferrite element is composed of hexacrystal base ferrite. CONSTITUTION:The title impedance element is constituted by making a through hole 2 in a ferrite element 1; forming a conductor 3 by pouring a conductive paste, etc., into the inner part of the hole 3; and connecting the conductor 3 to a terminal electrode 5 provided on the opposite surface through the intermediary of another electrode 4. In such a constitution, as for the ferrite element 1, hexacrystal base ferrite Ba3CoxMe2-xFe24O41 is applicable wherein X represents 0.6-2. Me represents at least one kind out of Cu, Ni, Mn, Mg, Zn. When these materials are used, the high impedance can be shown in the frequency region exceeding 500MHz while securing a notable noise suppression effect.

8. 发明专利

JPH03159208A CONDUCTIVE CIRCUIT ON FERRITE SUBSTRATE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03159208A
公开(公告)日：1991-07-09
申请号：JP29748789
申请日：1989-11-17
申请人： TDK CORP
发明人： TAKAHASHI SHIGEYA , WATABE SEIJI , TAKAHASHI SUMIO
IPC分类号： H01F27/29
摘要： PURPOSE:To eliminate the lateral elongation of a conductive circuit, and to contrive improvement in dimensional accuracy by a method wherein an electroplated conductive part is provided on a ferrite substrate and a film of insulating material is provided at least on a part of the circumference of the above-mentioned conductive part, preferably on the whole circumference of the conductive part. CONSTITUTION:Before formation of a conductive circuit 4 on a ferrite substrate 1, a film of insulating material 6 is provided on the part where lateral elongation of plating layer from the conductive layer 4 should be prevented. To be more precise, a pattern 6 of synthetic resin is printed on the circumference of the part where the conductive circuit 4 is formed. Especially, the above-mentioned pattern is formed without fail on the a-a' part having the problem of shortcircuit. Accordingly, as the surface of the ferrite 1 in the vicinity of the conductive circuit 4 is coated with the insulating material 6, the flowing of current on the verrite part 1 while an electroplating work is conducted can be prevented. As a result, the lateral elongation is not generated on the part of the conductive circuit having the insulating material film, and as a result, a conductive circuit having precise finish dimensions can be obtained.

9. 发明专利

JP2012142049A Permanent magnet member for voice coil motor, and voice coil motor 有权
标题翻译：声音线圈电机的永久磁铁会员和声音线圈电机
公开(公告)号：JP2012142049A
公开(公告)日：2012-07-26
申请号：JP2010293738
申请日：2010-12-28
申请人： Tdk Corp , Tdk株式会社
发明人： YOSHIDA KENICHI , TAKAHASHI SHIGEYA , NAWA KAZUAKI
IPC分类号： G11B21/22 , G11B21/02 , H01F7/02 , H02K33/18
CPC分类号： H02K41/0358
摘要： PROBLEM TO BE SOLVED: To control a magnetic head more stably when the magnetic head is retracted from on a magnetic disk.SOLUTION: When a permanent magnet member 10 for VCM having a projection projecting from a long periphery oppositely from a periphery center is mounted on a yoke 15, an end-P side where the sum (P1+P2) of thicknesses is maximum, i.e. an upper surface side of a magnet element assembly 111 on a projection side is higher than an upper surface side of the magnet element assembly in other regions. Therefore, the magnet element assembly 111 of the projection approaches a lock pin, the lock pin 21 and permanent magnet member 10 for VCM increase in mutual magnetic attracting force and make locking harder when the magnetic head is retracted from on the magnetic disk (during the locking), thereby increasing stability.
摘要翻译：要解决的问题：当磁头从磁盘上缩回时，更稳定地控制磁头。解决方案：当具有从与周边中心相反的长周边突出的突起的VCM用永久磁铁部件10安装在磁轭15上时，厚度之和（P1 + P2）最大的端部-P侧即在突出侧的磁铁体组件111的上表面侧高于其它区域的磁铁体组件的上表面侧。因此，突起的磁体组件111接近锁定销，锁定销21和VCM用永久磁铁部件10相互吸引力增加，并且当磁头从磁盘上缩回时使锁定更硬（在锁定），从而增加稳定性。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JPH08107019A COIL ELEMENT AND ITS MANUFACTURE 失效
公开(公告)号：JPH08107019A
公开(公告)日：1996-04-23
申请号：JP23877294
申请日：1994-10-03
申请人： TDK CORP
发明人： SAITO YUTAKA , TAKAHASHI SHIGEYA
IPC分类号： H01F41/04 , H01F17/00 , H01F17/04 , H01F27/29
摘要： PURPOSE: To provide a coil element which is excellent in mass producibility, electric characteristic and its uniformity, vibration resistance, etc. CONSTITUTION: A coil element has a coil part constituted of a conductor pattern layer 3 of a thin layer formed on an outer circumferential surface of a ferrite core 2 with uniform line width and spacing and a conductor film layer 4 which is thick enough to acquire good electric characteristic applied to a surface layer of the conductor pattern layer.

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