DE69132614T2 - Dünnfilmmagnetkopf für eine magneto-optische Platteneinheit - Google Patents

Dünnfilmmagnetkopf für eine magneto-optische Platteneinheit

Info

Publication number
DE69132614T2
DE69132614T2 DE69132614T DE69132614T DE69132614T2 DE 69132614 T2 DE69132614 T2 DE 69132614T2 DE 69132614 T DE69132614 T DE 69132614T DE 69132614 T DE69132614 T DE 69132614T DE 69132614 T2 DE69132614 T2 DE 69132614T2
Authority
DE
Germany
Prior art keywords
magneto
thin film
optical disk
magnetic head
film magnetic
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
Application number
DE69132614T
Other languages
English (en)
Other versions
DE69132614D1 (de
Inventor
Christopher Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp of America
Original Assignee
Sony Corp of America
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp of America filed Critical Sony Corp of America
Application granted granted Critical
Publication of DE69132614D1 publication Critical patent/DE69132614D1/de
Publication of DE69132614T2 publication Critical patent/DE69132614T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
DE69132614T 1990-12-27 1991-12-11 Dünnfilmmagnetkopf für eine magneto-optische Platteneinheit Expired - Lifetime DE69132614T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/634,484 US5402293A (en) 1990-12-27 1990-12-27 Magneto-optical head having a thin film coil recessed into a magnetic substrate

Publications (2)

Publication Number Publication Date
DE69132614D1 DE69132614D1 (de) 2001-06-21
DE69132614T2 true DE69132614T2 (de) 2001-11-29

Family

ID=24543993

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69132614T Expired - Lifetime DE69132614T2 (de) 1990-12-27 1991-12-11 Dünnfilmmagnetkopf für eine magneto-optische Platteneinheit

Country Status (4)

Country Link
US (1) US5402293A (de)
EP (2) EP0492888A3 (de)
JP (1) JPH04360049A (de)
DE (1) DE69132614T2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392263A (en) * 1990-01-31 1995-02-21 Sony Corporation Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens
FR2676303B1 (fr) * 1991-05-07 1993-07-16 Commissariat Energie Atomique Tete magneto-optique integree de lecture et d'ecriture et procede de realisation.
JP3153947B2 (ja) * 1993-04-28 2001-04-09 ソニー株式会社 磁気ヘッド及び光磁気記録装置
FR2705488B1 (fr) * 1993-05-14 1995-06-23 Commissariat Energie Atomique Tête magnétique d'écriture pour enregistrement magnéto-optique.
JPH0863824A (ja) * 1994-06-14 1996-03-08 Canon Inc 光磁気記録用磁気ヘッド、及びその製造方法、及び光磁気記録装置
US6270696B1 (en) * 1996-06-03 2001-08-07 Terastor Corporation Method of fabricating and integrating an optical assembly into a flying head
US5903525A (en) * 1997-04-18 1999-05-11 Read-Rite Corporation Coil for use with magneto-optical head
US5886959A (en) * 1997-04-18 1999-03-23 Read-Rite Corporation Thin-film electro-magnetic coil design for use in a flying magneto-optical head
US6922376B1 (en) * 1997-10-17 2005-07-26 Sony Corportion Sil magneto-optic transducer having thin film magnetic coil and holded magnetic core
US5978319A (en) * 1997-11-06 1999-11-02 Read-Rite Corporation Thin electro-magnetic coil assembly for attachment to a slider
JPH11353603A (ja) 1998-06-09 1999-12-24 Alps Electric Co Ltd 磁気ヘッド
US6191918B1 (en) * 1998-10-23 2001-02-20 International Business Machines Corporation Embedded dual coil planar structure
JP2001236670A (ja) * 2000-02-18 2001-08-31 Sony Corp 光学ヘッド用スライダ及びその製造方法並びに記録再生装置
JP4019615B2 (ja) * 2000-03-10 2007-12-12 富士ゼロックス株式会社 光磁気素子、光磁気ヘッドおよび磁気ディスク装置
PL351481A1 (en) * 2000-04-19 2003-04-22 Koninkl Philips Electronics Nv Magnetic head having a magnetic coil
JP3668112B2 (ja) * 2000-09-07 2005-07-06 富士通株式会社 光磁気ヘッドおよび光磁気ヘッドのコイルの製造方法
JP4070983B2 (ja) * 2000-12-19 2008-04-02 シャープ株式会社 磁気記録ヘッドおよび磁気記録装置
US7289285B2 (en) * 2002-10-24 2007-10-30 Charles Frederick James Barnes Information storage systems
JP4317470B2 (ja) * 2004-02-25 2009-08-19 Ｔｄｋ株式会社 コイル部品及びその製造方法
US8934189B2 (en) 2013-05-07 2015-01-13 International Business Machines Corporation Magnetic write head having electrically biasable structures

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029904A (ja) * 1983-07-28 1985-02-15 Seiko Instr & Electronics Ltd 光磁気記録用ヘッド
FR2559292A1 (fr) * 1984-02-03 1985-08-09 Commissariat Energie Atomique Bobinage pour tete magnetique d'enregistrement en couche mince et son procede de realisation
JPS60214438A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
US4652954A (en) * 1985-10-24 1987-03-24 International Business Machines Method for making a thin film magnetic head
JP2559372B2 (ja) * 1986-07-09 1996-12-04 株式会社日立製作所 光ディスク装置及び光情報記録方法
JPS6355704A (ja) * 1986-08-26 1988-03-10 Olympus Optical Co Ltd 光磁気記録装置用磁界印加装置
JPS63217547A (ja) * 1987-03-04 1988-09-09 Fujitsu Ltd 光磁気情報記録装置
JPS63249905A (ja) * 1987-04-06 1988-10-17 Nippon Telegr & Teleph Corp <Ntt> 光磁気記録用磁界発生回路
JPH0810481B2 (ja) * 1987-04-24 1996-01-31 松下電器産業株式会社 薄膜磁気ヘツドの製造方法
US5051970A (en) * 1987-05-08 1991-09-24 Nippon Telegraph And Telephone Corporation Magneto-optic recording system with overwrite capability
JPH01137419A (ja) * 1987-11-24 1989-05-30 Fuji Photo Film Co Ltd 薄膜磁気ヘッド
JPH0250302A (ja) * 1988-08-12 1990-02-20 Olympus Optical Co Ltd 光磁気記録装置
DE3836125A1 (de) * 1988-10-22 1990-05-03 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
JPH02122410A (ja) * 1988-10-31 1990-05-10 Yamaha Corp 薄膜磁気ヘッド
JPH02154348A (ja) * 1988-12-07 1990-06-13 Nippon Telegr & Teleph Corp <Ntt> 光磁気記憶装置
JPH02158942A (ja) * 1988-12-12 1990-06-19 Fuji Electric Co Ltd 光磁気ヘッド
JP2813195B2 (ja) * 1989-04-07 1998-10-22 シャープ株式会社 オーバライト用電磁石
JPH02294903A (ja) * 1989-05-09 1990-12-05 Mitsubishi Electric Corp 磁気ヘッド
JP2677415B2 (ja) * 1989-05-17 1997-11-17 ティーディーケイ株式会社 薄膜磁気ヘッド
JP2847564B2 (ja) * 1990-04-26 1999-01-20 コニカ株式会社 光磁気記録装置
JPH0413212A (ja) * 1990-05-07 1992-01-17 Mitsubishi Electric Corp 薄膜磁気ヘッド
JPH1137419A (ja) * 1997-07-18 1999-02-12 Chugai Ro Co Ltd ラインバーナ

Also Published As

Publication number Publication date
EP0492888A2 (de) 1992-07-01
US5402293A (en) 1995-03-28
DE69132614D1 (de) 2001-06-21
EP0742557A2 (de) 1996-11-13
EP0742557A3 (de) 1996-11-27
JPH04360049A (ja) 1992-12-14
EP0742557B1 (de) 2001-05-16
EP0492888A3 (en) 1993-05-19

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