专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP3486974B2 失效
公开(公告)号：JP3486974B2
公开(公告)日：2004-01-13
申请号：JP22276294
申请日：1994-08-25
IPC分类号： G11B5/115 , G11B5/265 , G11B5/49 , G11B21/21

2. 发明专利

JP2003338012A Magnetic recording head device, magnetic reproducing head device, magnetic head device, and tape drive and disk drive using the devices 审中-公开
标题翻译：磁记录头设备，磁性再现头设备，磁头设备，以及使用设备的磁带驱动器和磁盘驱动器
公开(公告)号：JP2003338012A
公开(公告)日：2003-11-28
申请号：JP2002140556
申请日：2002-05-15
申请人： Sony Corp , ソニー株式会社
发明人： OSUE TADASHI , HAYATA YUTAKA
IPC分类号： G11B5/115 , G11B5/29 , G11B5/31 , G11B5/39 , G11B5/48 , G11B5/49 , G11B5/53
CPC分类号： G11B5/3951 , G11B5/115 , G11B5/295 , G11B5/3103 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B5/488 , G11B5/4886 , G11B5/4893 , G11B5/4976 , G11B5/531 , G11B5/534
摘要： PROBLEM TO BE SOLVED: To further increase recording density by employing a plurality of magnetic head elements. SOLUTION: The magnetic recording head device 20 is constructed in such a manner that a plurality of magnetic recording head layers 21 in which magnetic recording head elements 28 manufactured by a thin-film process are stacked between two insulating layers 24, 24 are stacked on a nonmagnetic substrate (substrate made of a nonmagnetic material) 22, and all the magnetic recording head elements are formed by being shifted in a head width direction with respect to the stacking direction. A plurality of magnetic head elements are formed at predetermined pitches on the magnetic recording head layer. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过采用多个磁头元件来进一步提高记录密度。解决方案：磁记录头装置20被构造成使得通过薄膜处理制造的磁记录头元件28堆叠在两个绝缘层24,24之间的多个磁记录头层21 堆叠在非磁性基板（由非磁性材料制成的基板）22上，并且所有磁记录头元件通过相对于堆叠方向在磁头宽度方向上移位而形成。多个磁头元件以磁记录头层上的预定间距形成。版权所有（C）2004，JPO

3. 发明专利

JPH10124817A MAGNETIC HEAD DEVICE 失效
公开(公告)号：JPH10124817A
公开(公告)日：1998-05-15
申请号：JP29766896
申请日：1996-10-18
申请人： MINEBEA CO LTD
发明人： EGAWA MOTOJI , TAKAYANAGI KAZUTOSHI
IPC分类号： G11B5/115 , G11B5/11 , G11B5/265 , G11B5/29
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head device capable of reducing the influence of external magnetic field. SOLUTION: A magnetic head mechanism 3E is constituted by housing a magnetic head 5 in a shield ring 6 so that the respective distances from one and the other sides of the shield ring 6 to the center of a groove 14 are the same and a magnetic head device 1E is constituted by confronting rails 15a, 15b on the base end side, on the tip side of a pair of magnetic head mechanisms 3E, 3E on one side to the rails 15b, 15a on the tip side, on the base end side of them on the other side and a pair of shield rings 6, 6 are vertically faced (non-offset state). An interval LS between a pair of shield rings 6, 6 is made shorter than an interval LC between the shield ring on one side and a magnetic head core 8. The most part of external magnetic flux ϕreceived by the shield ring on one side flows to the shield ring 6 on the other side and the magnetic flux ϕC flowing through the magnetic head core is made little. An induced voltage generated in a coil by the external magnetic field is suppressed and a noise becomes small.

4. 发明专利

JP2683470B2 失效
公开(公告)号：JP2683470B2
公开(公告)日：1997-11-26
申请号：JP35171891
申请日：1991-12-16
IPC分类号： G11B5/115

5. 实用新型

JP2504924Y2 失效
公开(公告)号：JP2504924Y2
公开(公告)日：1996-07-24
申请号：JP10197489
申请日：1989-08-31
IPC分类号： G11B5/115

6. 发明专利

JPH07296331A MAGNETIC HEAD ASSEMBLY HAVING WRITE POLE STRUCTURE HAVING SHIELD 失效
公开(公告)号：JPH07296331A
公开(公告)日：1995-11-10
申请号：JP19986094
申请日：1994-08-24
申请人： READ RITE CORP
发明人： ROBAATO AARU ROTSUTOMEIYAA
IPC分类号： G11B5/115 , G11B5/31 , G11B5/39
摘要： PURPOSE: To enable data recording at a higher track density by effectively reducing an excess magnetic flux in a write mode in a thin film magnetic head which has an induction type write head and a magnetoresistance effect read head. CONSTITUTION: To reduce a skew error of a head, an induction type write head and a magnetoresistance effect head are caused to be in close contact with each other. An MR sensor element is shielded from a write excess magnetic flux of the induction type write head. The induction type head includes a P1 layer and a P2 layer 108 which are made of a ferromagnetic material, such as, permalloy, and forms a magnetic circuit having a write conversion gap. The P1 pole layer 98 has a step structure of a convex cross section, unified with a shield portion 122 laterally protruding from a lower part. The MR sensor element 90 is provided between the P1 pole layer 98 and a lower shield layer 84.

7. 实用新型

JPH0710808U 失效
公开(公告)号：JPH0710808U
公开(公告)日：1995-02-14
申请号：JP4512493
申请日：1993-07-27
IPC分类号： G11B5/115 , G11B5/127 , G11B5/29

8. 发明专利

JPH06274821A MAGNETIC HEAD 失效
公开(公告)号：JPH06274821A
公开(公告)日：1994-09-30
申请号：JP6230693
申请日：1993-03-23
申请人： CANON DENSHI KK
发明人： TOURIYUU KOUJI
IPC分类号： G11B5/115 , G11B5/29
摘要： PURPOSE:To remarkably reduce an external inductive noise by sufficiently reducing a gap between the tip part of a magnetic cut-off plate and a magnetic shield case than the gap between the tip part of a magnetic core part and the magnetic shield case. CONSTITUTION:The gap B between the tip part 5 of the magnetic cut-of plate 2 and the magnetic shield case 4 is set sufficiently smaller than the gap A between the tip part 6 of the magnetic core 1 and the magnetic shield case 4. Then, since an external noise magnetic flux H is transmitted more to the magnetic cut-off plate 2 as shown by the magnetic fluxes h1, h2, h3, and is transmitted not much to the magnetic core as shown by the magnetic fluxes H1, H2, H3, H4, the noise magnetic flux passing through an electromagnetic conversion coil (not shown in gigure) is reduced, and a noise reproducing amount is reduced. In such a manner, by sufficiently bringing the magnetic cut-off plate 2 between tracks nearer to the magnetic shield case 4 than the magnetic core 1, the external inductive noise is reduced remarkably without increasing a manufacturing cost.

9. 发明专利

JPH05298626A 失效
公开(公告)号：JPH05298626A
公开(公告)日：1993-11-12
申请号：JP10084492
申请日：1992-04-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAWAKI NORIYUKI
IPC分类号： G11B5/115 , G11B5/39
摘要： PURPOSE:To provide the magneto-resistance effect type head which makes the width of the track of a magnetic recording medium narrow, increases the recording density, and improves its reproduction output with a small noise. CONSTITUTION:The part of one of insulating layers 2 and 7, arranged on both film surfaces of the magneto-resistance effect element consisting of a soft magnetic film 3, an insulating film 4, a magneto-resistance film 5, and an electrode terminal 6, which is close to the magneto-resistance film 5 in a direction which does not face the medium to track width is removed or made thin in a specific shape to form a hollow 10, wherein a soft magnetic film 8 constituting a 2nd shield member is embedded to join or put a ferrite substrate 1 as a 1st shield member and the soft magnetic film 8 as the 2nd shield member together or close to each other. The whole magneto-resistance film is in a flow of magnetic flux, so the flow of the magnetic flux from the medium effectively contributes to resistance variation and a high output is obtained.

10. 发明专利

JPH0573838A MULTI-ELEMENT MAGNETIC HEAD 失效
公开(公告)号：JPH0573838A
公开(公告)日：1993-03-26
申请号：JP23140691
申请日：1991-09-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KATO TADASHI
IPC分类号： G11B5/115 , G11B5/29
摘要： PURPOSE:To provide a multi-element magnetic head of high quality and high productivity, in which a glass packing quantity on the travelling face of a magnetic tape is reduced, resistance to wear and partial wear are remarkably improved and durability is rapidly raised. CONSTITUTION:The multi-element magnetic head is provided with a core in which a magnetic gap is held and a closed magnetic circuit is formed, a sealed block by which the core is enclosed, a sealed spacer arranged between the core and the sealed block and the glass material for bonding packed between the core and the sealed block and between sealed spacers. The head is constituted in such a manner that, on the side of the sealed spacer 9, at least one or more differences 10 of the surface level, grooved parts 12, recessed parts and swelled parts are formed.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式