JPH0522286B2 - - Google Patents
Info
- Publication number
- JPH0522286B2 JPH0522286B2 JP57501995A JP50199582A JPH0522286B2 JP H0522286 B2 JPH0522286 B2 JP H0522286B2 JP 57501995 A JP57501995 A JP 57501995A JP 50199582 A JP50199582 A JP 50199582A JP H0522286 B2 JPH0522286 B2 JP H0522286B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- flux
- recording
- pole
- head
- 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 - Lifetime
Links
- 230000005291 magnetic effect Effects 0.000 description 207
- 230000004907 flux Effects 0.000 description 136
- 239000004020 conductor Substances 0.000 description 52
- 238000004804 winding Methods 0.000 description 52
- 230000035699 permeability Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 13
- 229910000889 permalloy Inorganic materials 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 238000003491 array Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 7
- 238000013500 data storage Methods 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- GICIECWTEWJCRE-UHFFFAOYSA-N 3,4,4,7-tetramethyl-2,3-dihydro-1h-naphthalene Chemical compound CC1=CC=C2C(C)(C)C(C)CCC2=C1 GICIECWTEWJCRE-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/335—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only with saturated jig, e.g. for detecting second harmonic; balanced flux head
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/49—Fixed mounting or arrangements, e.g. one head per track
- G11B5/4969—Details for track selection or addressing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/260,899 US4423450A (en) | 1981-05-06 | 1981-05-06 | Magnetic head and multitrack transducer for perpendicular recording and method for fabricating |
| US260899DEEFI | 1981-05-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58501151A JPS58501151A (ja) | 1983-07-14 |
| JPH0522286B2 true JPH0522286B2 (en, 2012) | 1993-03-29 |
Family
ID=22991114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57501995A Granted JPS58501151A (ja) | 1981-05-06 | 1982-05-06 | 垂直記録用磁気ヘッド及びマルチトラック・トランスジュ−サ及びその製造方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4423450A (en, 2012) |
| EP (1) | EP0077832B1 (en, 2012) |
| JP (1) | JPS58501151A (en, 2012) |
| DE (2) | DE3277946D1 (en, 2012) |
| GB (1) | GB2111741B (en, 2012) |
| NL (1) | NL8220214A (en, 2012) |
| WO (1) | WO1982003938A1 (en, 2012) |
Families Citing this family (63)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477853A (en) * | 1981-04-15 | 1984-10-16 | Eastman Kodak Company | Multitrack magnetic head |
| US4575777A (en) * | 1981-12-08 | 1986-03-11 | Kabushiki Kaisha Suwa Seikosha | Magnetic recording and reproducing head |
| US4613918A (en) * | 1982-04-14 | 1986-09-23 | Matsushita Electric Industrial Co., Ltd. | Perpendicular magnetic playback head and a perpendicular magnetic recording and reproducing device |
| US4564877A (en) * | 1982-04-28 | 1986-01-14 | Tdk Corporation | Magnetic recording/reproducing system with wide-gapped transducer and method for using same |
| JPS5914101A (ja) * | 1982-07-14 | 1984-01-25 | Hitachi Ltd | 磁気記録再生方式 |
| DE3375435D1 (en) * | 1982-11-04 | 1988-02-25 | Kao Corp | Magnetic head |
| JPS59152515A (ja) * | 1983-02-18 | 1984-08-31 | Victor Co Of Japan Ltd | 垂直磁化型磁気ヘツド |
| FR2549271B1 (fr) * | 1983-07-13 | 1989-05-26 | Cii Honeywell Bull | Transducteur magnetique hautement integre d'ecriture d'informations sur un support magnetique |
| DE3346777A1 (de) * | 1983-12-23 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | Duennschicht-magnetkopf zur senkrechten (vertikalen) aufzeichnung |
| US4638383A (en) * | 1984-02-22 | 1987-01-20 | Mcginlay James G | Micro hard-disk drive system |
| DE3524424A1 (de) * | 1984-07-10 | 1986-01-16 | Hitachi Maxell, Ltd., Ibaraki, Osaka | Magnetkopf |
| JPH0823925B2 (ja) * | 1984-07-31 | 1996-03-06 | 株式会社東芝 | 磁気記録再生装置 |
| DE3527468A1 (de) * | 1984-08-01 | 1986-02-06 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Magnetkopf fuer quermagnetische aufzeichnung und wiedergabe |
| US4860139A (en) * | 1987-06-19 | 1989-08-22 | Censtor Corporation | Planarized read/write head and method |
| FR2646000B1 (fr) * | 1989-04-14 | 1995-07-21 | Thomson Csf | Tete magnetique statique de lecture |
| FR2648607B1 (fr) * | 1989-06-16 | 1995-12-15 | Thomson Csf | Tete magnetique integree d'enregistrement |
| US6320725B1 (en) * | 1989-11-27 | 2001-11-20 | Censtor Corporation | Hard disk drive having ring head with predominantly perpendicular media fields |
| US5130876A (en) * | 1989-12-08 | 1992-07-14 | Ampex Corporation | Solid state scanning transducer that utilizes low flux densities |
| US6285528B1 (en) * | 1993-03-15 | 2001-09-04 | Kabushiki Kaisha Toshiba | Thin-film magnetic head |
| US5521774A (en) * | 1994-03-18 | 1996-05-28 | Cartesian Data, Inc. | Memory storage module for storing and accessing |
| US6198607B1 (en) | 1995-12-22 | 2001-03-06 | Censtor Corporation | Contact planar magnetoresistive head |
| US5978186A (en) * | 1996-03-14 | 1999-11-02 | Matsushita Electric Industrial Co., Ltd. | Magnetic head and reproducing apparatus with head having central core with winding thereabout and wire therethrough |
| US7170719B1 (en) * | 1998-04-28 | 2007-01-30 | Maxtor Corporation | Magnetic storage device with flux-guided magnetoresistive head using a perpendicular recording media |
| US6455174B1 (en) * | 1998-11-05 | 2002-09-24 | Hitachi Maxell, Ltd. | Magnetic recording medium, recording and reproducing head, and magnetic recording and reproducing method |
| 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 |
| US6560069B1 (en) | 1999-11-29 | 2003-05-06 | Seagate Technology, Llc | Perpendicular recording head defining the trackwidth by material deposition thickness |
| US6816339B1 (en) * | 2000-01-10 | 2004-11-09 | Seagate Technology Llc | Perpendicular magnetic recording head with longitudinal magnetic field generator to facilitate magnetization switching |
| 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 |
| US6707642B1 (en) * | 2000-02-04 | 2004-03-16 | Seagate Technology Llc | Longitudinal magnetic recording head with reduced side fringing |
| US6621664B1 (en) | 2000-02-28 | 2003-09-16 | Seagate Technology Llc | Perpendicular recording head having integrated read and write portions |
| 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 |
| US6721131B2 (en) * | 2001-03-15 | 2004-04-13 | Seagate Technology Llc | Composite write pole for a magnetic recording head |
| US6687085B2 (en) | 2001-07-17 | 2004-02-03 | Seagate Technology Llc | Perpendicular write head with high magnetization pole material and method of fabricating the write head |
| US6809899B1 (en) | 2001-08-20 | 2004-10-26 | Western Digital (Fremont), Inc. | Magnetic heads for perpendicular recording with trapezoidal pole tips |
| WO2003036625A1 (en) * | 2001-10-19 | 2003-05-01 | Seagate Technology Llc | Perpendicular magnetic recording head with a multilayered main write pole |
| AU2002310155A1 (en) * | 2002-01-08 | 2003-07-30 | Seagate Technology Llc | Heat assisted magnetic recording head with hybrid write pole |
| US6842313B1 (en) | 2002-04-08 | 2005-01-11 | Maxtor Corporation | Floating down stream perpendicular write head shield |
| US6813115B2 (en) | 2002-04-18 | 2004-11-02 | Seagate Technology Llc | Perpendicular magnetic recording head with improved write field gradient |
| US7075756B1 (en) | 2002-11-07 | 2006-07-11 | Maxtor Corporation | Shielded pole writer |
| US7729092B1 (en) | 2002-11-07 | 2010-06-01 | Seagate Technology Llc | Shielded pole writer under reader |
| US7149045B1 (en) | 2002-11-07 | 2006-12-12 | Maxtor Corporation | Longitudinal media with soft underlayer and perpendicular write head |
| JP2004171664A (ja) * | 2002-11-20 | 2004-06-17 | Tdk Corp | 磁気記録媒体および磁気記録再生システム |
| US7259927B2 (en) * | 2003-07-14 | 2007-08-21 | Agere Systems, Inc. | Method and apparatus for improving signal-to-noise ratio for hard disk drives |
| US7070716B2 (en) * | 2003-07-28 | 2006-07-04 | Hitachi Global Storage Technologies Netherlands B.V. | Method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation |
| US7057849B2 (en) * | 2003-12-31 | 2006-06-06 | Esgw Holding Limited | Data storage device with dampers |
| US7588842B1 (en) | 2004-09-02 | 2009-09-15 | Maxtor Corporation | Perpendicular magnetic recording medium with a pinned soft underlayer |
| 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 |
| KR100682930B1 (ko) * | 2005-02-07 | 2007-02-15 | 삼성전자주식회사 | 자기헤드 |
| US7595959B2 (en) * | 2005-06-29 | 2009-09-29 | Seagate Technology Llc | Recording heads including a magnetically damped write pole and recording systems including such heads |
| US8929030B2 (en) * | 2007-03-15 | 2015-01-06 | Seagate Technology Llc | Magnetic writer for field assisted magnetic recording |
| US8134801B2 (en) * | 2007-03-19 | 2012-03-13 | Dimambro Bryan | Electromagnetic data storage devices |
| KR20090022188A (ko) * | 2007-08-29 | 2009-03-04 | 삼성전자주식회사 | 자기헤드, 자기기록매체 및 이를 채용한 자기기록장치 |
| US8542460B2 (en) * | 2008-03-12 | 2013-09-24 | International Business Machines Corporation | Head for tape drive with transversely varying contour |
| US8243385B2 (en) | 2008-04-29 | 2012-08-14 | International Business Machines Corporation | Magnetic head having first, second and third arrays of writers |
| US7986488B2 (en) * | 2008-12-04 | 2011-07-26 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with alternating single-polarity position error signal (PES) blocks for read/write head positioning |
| US8861132B2 (en) | 2010-07-06 | 2014-10-14 | International Business Machines Corporation | Low friction tape head and system implementing same |
| US8679733B2 (en) | 2011-01-19 | 2014-03-25 | International Business Machines Corporation | Patterning process for small devices |
| US8693127B2 (en) * | 2011-01-27 | 2014-04-08 | International Business Machines Corporation | Writing timing-based servo patterns in perpendicular and non-oriented magnetic media |
| US8373944B2 (en) | 2011-05-26 | 2013-02-12 | International Business Machines Corporation | Low friction tape head and system implementing same |
| US9099108B2 (en) | 2011-07-06 | 2015-08-04 | Seagate Technology Llc | Magnetically biased write pole |
| US9183859B1 (en) * | 2014-11-11 | 2015-11-10 | Western Digital (Fremont), Llc | HAMR writer pole length characterization |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2785233A (en) * | 1949-10-20 | 1957-03-12 | Bendix Aviat Corp | Method and apparatus for reproducing magnetically recorded signals |
| US2995631A (en) * | 1951-10-25 | 1961-08-08 | Sperry Rand Corp | Magnetic reading device |
| US3087026A (en) * | 1952-09-17 | 1963-04-23 | Sperry Rand Corp | Boundary displacement magnetic recording apparatus |
| GB782572A (en) * | 1954-06-01 | 1957-09-11 | British Broadcasting Corp | Improvements in and relating to reproduction from magnetic records |
| BE540911A (en, 2012) * | 1954-08-31 | |||
| DE1059196B (de) * | 1954-09-28 | 1959-06-11 | Licentia Gmbh | Schreibkopf fuer nach dem Grenzlinien-verschiebungsverfahren arbeitende Magnetband-Oszillographen |
| US2905770A (en) * | 1956-01-19 | 1959-09-22 | Clevite Corp | Flux responsive magnetic reproducer head |
| NL219339A (en, 2012) * | 1956-07-31 | |||
| US2933721A (en) * | 1957-05-22 | 1960-04-19 | Ibm | Gated magnetic recording head |
| US3152225A (en) * | 1958-06-11 | 1964-10-06 | Sylvania Electric Prod | Magnetic tape transducer |
| FR1289622A (fr) * | 1961-02-24 | 1962-04-06 | Compteurs Comp D | Dispositif à mémoire magnétique statique |
| US3391254A (en) * | 1964-10-15 | 1968-07-02 | William M. Honig | Magnetic head with means for producing a shiftable high permeability region in a magnetic permeable material |
| US3414893A (en) * | 1965-07-15 | 1968-12-03 | Burroughs Corp | Multichannel transducing head with selectable flux paths |
| US3454727A (en) * | 1965-12-06 | 1969-07-08 | Lockheed Aircraft Corp | Plural track flux gate transducer head with common excitation means |
| US3487388A (en) * | 1965-12-28 | 1969-12-30 | Univ Iowa State Res Found Inc | Variable reluctance head |
| GB1199593A (en) * | 1967-06-01 | 1970-07-22 | Marconi Co Ltd | Improvements in or relating to Pick-up Apparatus for Magnetically Recorded Records |
| US3553716A (en) * | 1968-03-28 | 1971-01-05 | Iit Res Inst | Microcomb-type magnetic recording head |
| US3810191A (en) * | 1972-10-26 | 1974-05-07 | Honeywell Inc | Multi-stylus through field recording head |
| JPS49121512A (en, 2012) * | 1973-03-22 | 1974-11-20 | ||
| US4138702A (en) * | 1975-01-23 | 1979-02-06 | Compagnie Honeywell Bull | Head arrangement for perpendicular recording information on a magnetic record carrier |
| JPS5282318A (en) * | 1975-12-29 | 1977-07-09 | Teac Corp | Magnetic head and method of producing same |
| JPS5434205A (en) * | 1977-08-22 | 1979-03-13 | Canon Inc | Magnetic recording medium |
| JPS563422A (en) * | 1979-06-20 | 1981-01-14 | Matsushita Electric Ind Co Ltd | Magnetic head |
| US4317148A (en) * | 1980-01-24 | 1982-02-23 | Sperry Corporation | Transducer for perpendicular magnetic recording |
-
1981
- 1981-05-06 US US06/260,899 patent/US4423450A/en not_active Expired - Lifetime
-
1982
- 1982-05-06 DE DE8282902007T patent/DE3277946D1/de not_active Expired
- 1982-05-06 GB GB08300278A patent/GB2111741B/en not_active Expired
- 1982-05-06 EP EP82902007A patent/EP0077832B1/en not_active Expired
- 1982-05-06 NL NL8220214A patent/NL8220214A/nl unknown
- 1982-05-06 DE DE19823242692 patent/DE3242692T1/de active Granted
- 1982-05-06 JP JP57501995A patent/JPS58501151A/ja active Granted
- 1982-05-06 WO PCT/US1982/000613 patent/WO1982003938A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| NL8220214A (nl) | 1983-04-05 |
| DE3242692T1 (de) | 1984-10-18 |
| US4423450A (en) | 1983-12-27 |
| GB2111741A (en) | 1983-07-06 |
| DE3277946D1 (en) | 1988-02-11 |
| EP0077832B1 (en) | 1988-01-07 |
| DE3242692C2 (en, 2012) | 1993-09-02 |
| EP0077832A4 (en) | 1983-09-02 |
| GB2111741B (en) | 1986-04-16 |
| WO1982003938A1 (en) | 1982-11-11 |
| EP0077832A1 (en) | 1983-05-04 |
| GB8300278D0 (en) | 1983-02-09 |
| JPS58501151A (ja) | 1983-07-14 |
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