DE69229906D1 - Induktiver Dünnfilmwandler mit verbesserter Schreibfähigkeit - Google Patents
Induktiver Dünnfilmwandler mit verbesserter SchreibfähigkeitInfo
- Publication number
- DE69229906D1 DE69229906D1 DE69229906T DE69229906T DE69229906D1 DE 69229906 D1 DE69229906 D1 DE 69229906D1 DE 69229906 T DE69229906 T DE 69229906T DE 69229906 T DE69229906 T DE 69229906T DE 69229906 D1 DE69229906 D1 DE 69229906D1
- Authority
- DE
- Germany
- Prior art keywords
- thin film
- writing ability
- inductive thin
- improved writing
- film converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81073691A | 1991-12-18 | 1991-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69229906D1 true DE69229906D1 (de) | 1999-10-07 |
DE69229906T2 DE69229906T2 (de) | 1999-12-23 |
Family
ID=25204575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69229906T Expired - Fee Related DE69229906T2 (de) | 1991-12-18 | 1992-11-02 | Induktiver Dünnfilmwandler mit verbesserter Schreibfähigkeit |
Country Status (4)
Country | Link |
---|---|
US (1) | US5325254A (de) |
EP (1) | EP0548511B1 (de) |
JP (1) | JPH05290331A (de) |
DE (1) | DE69229906T2 (de) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6600631B1 (en) | 1989-11-27 | 2003-07-29 | Censtor Corp. | Transducer/flexure/conductor structure for electromagnetic read/write system |
US6198597B1 (en) | 1993-08-10 | 2001-03-06 | Kabushiki Kaisha Toshiba | Thin-film magnetic head having improved magnetic pole structure |
US5872693A (en) * | 1993-08-10 | 1999-02-16 | Kabushiki Kaisha Toshiba | Thin-film magnetic head having a portion of the upper magnetic core coplanar with a portion of the lower magnetic core |
DE69516442T2 (de) * | 1994-03-03 | 2000-08-10 | Seagate Technology International, Georgetown | Magnetoresistiver Kopf und Herstellungsverfahren |
US5640753A (en) * | 1994-03-03 | 1997-06-24 | Seagate Technology, Inc. | Method of fabricating an inverted magnetoresistive head |
US5668689A (en) * | 1994-03-03 | 1997-09-16 | Seagate Technology, Inc. | Inverted magnetoresistive head |
US5600519A (en) * | 1995-03-06 | 1997-02-04 | International Business Machines Corporation | Controlled saturation thin film magnetic write head |
US5798897A (en) * | 1996-10-21 | 1998-08-25 | International Business Machines Corporation | Inductive write head with insulation stack configured for eliminating reflective notching |
US5805391A (en) * | 1996-10-28 | 1998-09-08 | International Business Machines Corporation | Write head with recessed stitched yoke on a planar portion of an insulation layer defining zero throat height |
US6043959A (en) * | 1998-03-23 | 2000-03-28 | Read-Rite Corporation | Inductive write head formed with flat yoke and merged with magnetoresistive read transducer |
US6130809A (en) * | 1998-04-10 | 2000-10-10 | International Business Machines Corporation | Write head before read head constructed merged magnetic head with track width and zero throat height defined by first pole tip |
JPH11353616A (ja) * | 1998-06-11 | 1999-12-24 | Tdk Corp | 薄膜磁気ヘッドおよびその製造方法 |
US6317288B1 (en) * | 1998-08-28 | 2001-11-13 | Tdk Corporation | Thin-film magnetic head and method of manufacturing same |
US6259583B1 (en) * | 1998-09-16 | 2001-07-10 | International Business Machines, Corporation | Laminated yoke head with a domain control element |
US6353995B1 (en) * | 1998-12-11 | 2002-03-12 | Tdk Corporation | Thin film mangetic head and method of manufacturing same |
US6944938B1 (en) | 1999-05-03 | 2005-09-20 | Western Digital (Fremont), Inc. | Method of forming a magnetoresistive device |
US6829819B1 (en) | 1999-05-03 | 2004-12-14 | Western Digital (Fremont), Inc. | Method of forming a magnetoresistive device |
US6466402B1 (en) | 1999-06-18 | 2002-10-15 | Read-Rite Corporation | Compact MR write structure |
JP3492953B2 (ja) * | 1999-10-05 | 2004-02-03 | Tdk株式会社 | 薄膜磁気ヘッドの製造方法 |
JP3379701B2 (ja) * | 1999-12-27 | 2003-02-24 | ティーディーケイ株式会社 | 薄膜磁気ヘッドおよびその製造方法 |
JP3866472B2 (ja) | 2000-01-28 | 2007-01-10 | アルプス電気株式会社 | 薄膜磁気ヘッド及びその製造方法 |
US6596468B1 (en) | 2000-09-11 | 2003-07-22 | Headway Technologies, Inc. | Process to form a flux concentration stitched write head |
US6850390B2 (en) * | 2000-11-10 | 2005-02-01 | Tdk Corporation | Thin-film magnetic head and method of manufacturing same |
JP3464988B2 (ja) * | 2001-09-21 | 2003-11-10 | 株式会社東芝 | ディスク装置、ディスク装置に組み込まれたヨーク、およびヨークの製造方法 |
US6989964B2 (en) | 2003-06-16 | 2006-01-24 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic head having a pole piece with a double pedestal structure |
US7292408B2 (en) * | 2004-07-30 | 2007-11-06 | Hitachi Global Storage Technologies Netherlands B.V. | Bilayer coil insulation for magnetic write heads to minimize pole recession |
US8102236B1 (en) | 2010-12-14 | 2012-01-24 | International Business Machines Corporation | Thin film inductor with integrated gaps |
US9036296B2 (en) | 2013-04-24 | 2015-05-19 | International Business Machines Corporation | Multiple writers with reduced crosstalk |
CN206041774U (zh) * | 2016-09-07 | 2017-03-22 | 京东方科技集团股份有限公司 | 一种发电装置、电源及传感器 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2813932A (en) * | 1951-03-30 | 1957-11-19 | Clevite Corp | Magnetic transducer head and method of making same |
US4190872A (en) * | 1978-12-21 | 1980-02-26 | International Business Machines Corporation | Thin film inductive transducer |
JPS60202502A (ja) * | 1984-03-28 | 1985-10-14 | Canon Electronics Inc | 磁気ヘツド |
EP0185289B1 (de) * | 1984-12-21 | 1988-07-27 | Siemens Aktiengesellschaft | Dünnfilm-Magnetkopf auf einem nicht-magnetischen Substrat zur senkrechten Magnetisierung |
US4819111A (en) * | 1986-08-29 | 1989-04-04 | Magnetic Peripheral Inc. | Thin film head with reduced cross section in the core for causing magnetic saturation in the leading leg's throat area |
EP0311854A1 (de) * | 1987-10-16 | 1989-04-19 | Siemens Aktiengesellschaft | Dünnfilm-Magnetkopf mit schichtweisem Aufbau zur senkrechten Magnetisierung |
FR2649526B1 (fr) * | 1989-07-04 | 1991-09-20 | Thomson Csf | Procede de fabrication de tetes magnetiques planaires par alveolage d'une plaquette non magnetique, et tetes magnetiques obtenues par un tel procede |
FR2651600B1 (fr) * | 1989-09-06 | 1991-10-25 | Commissariat Energie Atomique | Procede de realisation d'une tete magnetique a axe de facile aimantation convenablement oriente et tete obtenue par ce procede. |
FR2652669B1 (fr) * | 1989-09-29 | 1992-11-20 | Commissariat Energie Atomique | Procede de realisation d'une tete d'enregistrement magnetique et tete obtenue par ce procede. |
JPH03178013A (ja) * | 1989-12-06 | 1991-08-02 | Sony Corp | 狭トラック磁気ヘッド |
FR2661030B1 (fr) * | 1990-04-13 | 1995-04-07 | Thomson Csf | Tete magnetique d'enregistrement/lecture et procedes de realisation. |
DE69117323T2 (de) * | 1990-04-16 | 1996-07-11 | Hitachi Ltd | Dünnfilm-Magnetkopf mit schmaler Spurbreite und dessen Herstellungsverfahren |
US5130877A (en) * | 1990-04-26 | 1992-07-14 | Seagate Technology, Inc. | Thin film head on ferrite substrate with inclined top pole |
-
1992
- 1992-11-02 DE DE69229906T patent/DE69229906T2/de not_active Expired - Fee Related
- 1992-11-02 EP EP92118749A patent/EP0548511B1/de not_active Expired - Lifetime
- 1992-12-18 JP JP4355904A patent/JPH05290331A/ja active Pending
-
1993
- 1993-06-11 US US08/076,267 patent/US5325254A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0548511A1 (de) | 1993-06-30 |
DE69229906T2 (de) | 1999-12-23 |
EP0548511B1 (de) | 1999-09-01 |
US5325254A (en) | 1994-06-28 |
JPH05290331A (ja) | 1993-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE), |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE |
|
8339 | Ceased/non-payment of the annual fee |