DE68919967D1 - Dünnfilm-Magnetkopf für senkrechte Aufzeichnung und Wiedergabe. - Google Patents
Dünnfilm-Magnetkopf für senkrechte Aufzeichnung und Wiedergabe.Info
- Publication number
- DE68919967D1 DE68919967D1 DE68919967T DE68919967T DE68919967D1 DE 68919967 D1 DE68919967 D1 DE 68919967D1 DE 68919967 T DE68919967 T DE 68919967T DE 68919967 T DE68919967 T DE 68919967T DE 68919967 D1 DE68919967 D1 DE 68919967D1
- Authority
- DE
- Germany
- Prior art keywords
- playback
- thin film
- magnetic head
- film magnetic
- vertical recording
- 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
-
- 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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63242887A JPH081687B2 (ja) | 1988-09-27 | 1988-09-27 | 垂直磁化薄膜ヘッド |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68919967D1 true DE68919967D1 (de) | 1995-01-26 |
DE68919967T2 DE68919967T2 (de) | 1995-05-04 |
Family
ID=17095704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68919967T Expired - Fee Related DE68919967T2 (de) | 1988-09-27 | 1989-05-30 | Dünnfilm-Magnetkopf für senkrechte Aufzeichnung und Wiedergabe. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4974110A (de) |
EP (1) | EP0360978B1 (de) |
JP (1) | JPH081687B2 (de) |
KR (1) | KR950003886B1 (de) |
DE (1) | DE68919967T2 (de) |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0452846B1 (de) * | 1990-04-16 | 1996-02-28 | Hitachi, Ltd. | Dünnfilm-Magnetkopf mit schmaler Spurbreite und dessen Herstellungsverfahren |
US5402295A (en) * | 1990-04-16 | 1995-03-28 | Hitachi, Ltd. | Magnetic recording head capable of defining narrow track width and magnetic recording apparatus using the same |
JPH10241117A (ja) * | 1997-02-24 | 1998-09-11 | Fujitsu Ltd | 単層磁性膜垂直磁化媒体用記録ヘッド |
KR100441170B1 (ko) * | 1997-05-22 | 2004-10-12 | 삼성전자주식회사 | 측면트랙노이즈제거를위한헤드갭(gap)구조 |
JP3249068B2 (ja) * | 1997-05-26 | 2002-01-21 | 富士通株式会社 | 磁気記録方法及び装置 |
US6876519B1 (en) | 1999-09-20 | 2005-04-05 | Seagate Technology Llc | Magnetic recording head including background magnetic field generator |
US6771462B1 (en) | 1999-09-20 | 2004-08-03 | Seagate Technology Llc | Perpendicular recording head including concave tip |
US6898053B1 (en) | 1999-10-26 | 2005-05-24 | Seagate Technology Llc | Perpendicular recording head with trackwidth defined by plating thickness |
US6531202B1 (en) | 1999-11-29 | 2003-03-11 | Seagate Technology Llc | Perpendicular magnetic recording media with reduced-noise soft magnetic underlayer |
US6560069B1 (en) | 1999-11-29 | 2003-05-06 | Seagate Technology, Llc | Perpendicular recording head defining the trackwidth by material deposition thickness |
US6513228B1 (en) * | 2000-01-05 | 2003-02-04 | Seagate Technology Llc | Method for forming a perpendicular recording read/write head |
US6667848B1 (en) | 2000-01-10 | 2003-12-23 | Seagate Technology Llc | Perpendicular magnetic recording head with means for suppressing noise from soft magnetic underlayer of recording media |
US6816339B1 (en) | 2000-01-10 | 2004-11-09 | Seagate Technology Llc | Perpendicular magnetic recording head with longitudinal magnetic field generator to facilitate magnetization switching |
US6646827B1 (en) | 2000-01-10 | 2003-11-11 | Seagate Technology Llc | Perpendicular magnetic recording head with write pole which reduces flux antenna effect |
US6574072B1 (en) | 2000-01-12 | 2003-06-03 | Seagate Technology Llc | Perpendicular magnetic recording head with radial magnetic field generator which reduces noise from soft magnetic underlayer of recording disk |
US6660357B1 (en) | 2000-02-04 | 2003-12-09 | Seagate Technology Llc | Perpendicular magnetic recording media with laminated soft magnetic underlayer |
US6693768B1 (en) * | 2000-03-15 | 2004-02-17 | Seagate Technology Llc | Perpendicular magnetic recording head having a flux focusing main pole |
US6798615B1 (en) | 2000-03-24 | 2004-09-28 | Seagate Technology Llc | Perpendicular recording head with return poles which reduce flux antenna effect |
US6717770B1 (en) | 2000-03-24 | 2004-04-06 | Seagate Technology Llc | Recording head for applying a magnetic field perpendicular to the magnetizations within magnetic storage media |
US6703099B2 (en) | 2000-07-27 | 2004-03-09 | Seagate Technology Llc | Perpendicular magnetic recording media with patterned soft magnetic underlayer |
JP2002100007A (ja) | 2000-09-25 | 2002-04-05 | Toshiba Corp | 垂直記録ヘッドおよび垂直磁気記録装置 |
JP3593312B2 (ja) * | 2000-12-26 | 2004-11-24 | アルプス電気株式会社 | 垂直磁気記録ヘッドおよびその製造方法 |
US7100266B2 (en) * | 2001-05-16 | 2006-09-05 | Seagate Technology Llc | Method of forming a beveled writing pole of a perpendicular writing element |
US6943992B2 (en) * | 2001-08-30 | 2005-09-13 | Headway Technologies, Inc. | Inverted write head for vertical recording |
US20030117749A1 (en) * | 2001-12-20 | 2003-06-26 | Shukh Alexander M. | Perpendicular read/write head for use in a disc drive storage system |
US6757141B2 (en) | 2002-01-18 | 2004-06-29 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular recording write head with a ferromagnetic shaping layer |
US6813115B2 (en) | 2002-04-18 | 2004-11-02 | Seagate Technology Llc | Perpendicular magnetic recording head with improved write field gradient |
US7061719B2 (en) * | 2002-10-01 | 2006-06-13 | Tdk Corporation | Thin film magnetic head and method of manufacturing the same |
JP2005018851A (ja) | 2003-06-24 | 2005-01-20 | Tdk Corp | 薄膜磁気ヘッドおよび磁気記録装置 |
JP4009233B2 (ja) * | 2003-08-21 | 2007-11-14 | アルプス電気株式会社 | 垂直磁気記録ヘッドの製造方法 |
US7102854B2 (en) | 2003-10-03 | 2006-09-05 | Seagate Technology Llc | Transducing head with reduced side writing |
US7296338B2 (en) * | 2004-07-30 | 2007-11-20 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording |
JP2006120224A (ja) | 2004-10-20 | 2006-05-11 | Tdk Corp | 垂直磁気記録ヘッドおよびその製造方法、ならびに磁気記録装置 |
JP3892023B2 (ja) | 2004-11-05 | 2007-03-14 | Tdk株式会社 | 垂直磁気記録ヘッドおよびその製造方法、ならびに磁気記録装置 |
JP4113879B2 (ja) * | 2005-02-04 | 2008-07-09 | Tdk株式会社 | 垂直磁気記録ヘッドおよび磁気記録装置 |
JP2006318579A (ja) | 2005-05-13 | 2006-11-24 | Tdk Corp | 薄膜磁気ヘッドおよびその製造方法、並びにヘッドジンバルアセンブリおよびハードディスク装置 |
JP4157570B2 (ja) | 2006-05-23 | 2008-10-01 | Tdk株式会社 | 磁気記録再生装置 |
JP2008123600A (ja) | 2006-11-10 | 2008-05-29 | Shinka Jitsugyo Kk | 垂直磁気記録ヘッドおよびその製造方法、ならびに磁気記録装置 |
US7889458B2 (en) * | 2006-11-13 | 2011-02-15 | Hitachi Global Storage Technologies Netherlands B.V. | Write head with self-cross biased pole for high speed magnetic recording |
US20080112080A1 (en) * | 2006-11-13 | 2008-05-15 | Hitachi Global Storage Technologies | Magnetic write head employing multiple magnetomotive force (MMF) sources |
JP2008186546A (ja) | 2007-01-31 | 2008-08-14 | Tdk Corp | 垂直磁気記録ヘッドおよびその製造方法、ならびに磁気記録装置 |
US7808743B2 (en) | 2007-03-05 | 2010-10-05 | Tdk Corporation | Perpendicular magnetic write head having a structure that suppresses unintended erasure of information on a write medium at a non-writing time |
US8102622B2 (en) * | 2009-01-05 | 2012-01-24 | Tdk Corporation | Perpendicular magnetic write head, method of manufacturing the same and method of forming magnetic layer pattern |
US8385018B2 (en) * | 2009-11-03 | 2013-02-26 | International Business Machines Corporation | Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps |
US8896967B2 (en) * | 2011-04-11 | 2014-11-25 | Headway Technologies, Inc. | Magnetic head for perpendicular magnetic recording having a main pole and a shield |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5693111A (en) * | 1979-12-25 | 1981-07-28 | Nec Corp | Induction-type thin-film magnetic head |
JPS5819717A (ja) * | 1981-07-30 | 1983-02-04 | Fujitsu Ltd | 垂直磁化記録再生用ヘッド |
US4404609A (en) * | 1981-10-30 | 1983-09-13 | International Business Machines Corporation | Thin film inductive transducer for perpendicular recording |
DE3424651A1 (de) * | 1983-11-04 | 1985-05-15 | Control Data Corp., Minneapolis, Minn. | Magnetwandlerkopf |
DE3346777A1 (de) * | 1983-12-23 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | Duennschicht-magnetkopf zur senkrechten (vertikalen) aufzeichnung |
JPS61229221A (ja) * | 1985-04-02 | 1986-10-13 | Fujitsu Ltd | 薄膜磁気ヘツド |
JPS6236714A (ja) * | 1985-08-09 | 1987-02-17 | Mitsubishi Electric Corp | 垂直薄膜磁気ヘツド |
JPS62262212A (ja) * | 1986-05-07 | 1987-11-14 | Matsushita Electric Ind Co Ltd | 薄膜磁気ヘツド |
JPH0646445B2 (ja) * | 1986-07-07 | 1994-06-15 | 日本放送協会 | 垂直磁気記録再生用磁気ヘツド |
US4843507A (en) * | 1986-12-03 | 1989-06-27 | Siemens Aktiengesellschaft | Magnetic head with laminated structure |
JPS63144403A (ja) * | 1986-12-08 | 1988-06-16 | Olympus Optical Co Ltd | 垂直磁気ヘツド |
-
1988
- 1988-09-27 JP JP63242887A patent/JPH081687B2/ja not_active Expired - Lifetime
-
1989
- 1989-05-08 KR KR1019890006141A patent/KR950003886B1/ko not_active IP Right Cessation
- 1989-05-30 EP EP89109688A patent/EP0360978B1/de not_active Expired - Lifetime
- 1989-05-30 DE DE68919967T patent/DE68919967T2/de not_active Expired - Fee Related
- 1989-06-05 US US07/361,181 patent/US4974110A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4974110A (en) | 1990-11-27 |
EP0360978B1 (de) | 1994-12-14 |
EP0360978A2 (de) | 1990-04-04 |
DE68919967T2 (de) | 1995-05-04 |
JPH0291806A (ja) | 1990-03-30 |
KR950003886B1 (ko) | 1995-04-20 |
KR900018915A (ko) | 1990-12-22 |
JPH081687B2 (ja) | 1996-01-10 |
EP0360978A3 (de) | 1991-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |