ES2104847T3 - Aparato de impresion magneto-optico. - Google Patents

Aparato de impresion magneto-optico.

Info

Publication number
ES2104847T3
ES2104847T3 ES92309749T ES92309749T ES2104847T3 ES 2104847 T3 ES2104847 T3 ES 2104847T3 ES 92309749 T ES92309749 T ES 92309749T ES 92309749 T ES92309749 T ES 92309749T ES 2104847 T3 ES2104847 T3 ES 2104847T3
Authority
ES
Spain
Prior art keywords
magneto
optical recording
optical
recording media
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
ES92309749T
Other languages
English (en)
Inventor
Kazuyoshi Ishii
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of ES2104847T3 publication Critical patent/ES2104847T3/es
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
    • 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
    • G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/1058—Flying heads
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

UN APARATO DE REGISTRO MAGNETO-OPTICO COMPRENDE UNA CABEZA OPTICA PARA IRRADIAR UN MEDIO DE REGISTRO MAGNETO-OPTICO CON UN HAZ OPTICO, Y UNA CABEZA MAGNETICA PARA APLICAR UN CAMPO MAGNETICO AL MEDIO DE REGISTRO, CUYO NUCLEO ESTA REALIZADO DE UN MATERIAL DE FERRITA DE CRISTAL UNICO. EN EL APARATO DE REGISTRO MAGNETO-OPTICO, SE PUEDE DISPONER UNA DIRECCION DE MAGNETIZACION FACIL BASADA EN UNA ANISOTROPIA MAGNETICA DEL MATERIAL DE FERRITA DE CRISTAL UNICO QUE FORMA UNA PARTE DE POLO PRINCIPAL DEL NUCLEO DE LA CABEZA MAGNETICA PARA QUE SEA COINCIDENTE BASICAMENTE CON UNA DIRECCION DEL CAMPO MAGNETICO APLICADA AL MEDIO DE REGISTRO MAGNETO-OPTICO, O CON UNA DIRECCION DE MAGNETIZACION CAUSADA POR UNA BOBINA EN UNA PARTE DE ENRROLLAMIENTO DE BOBINA DEL NUCLEO DE LA CABEZA MAGNETICA.
ES92309749T 1991-10-28 1992-10-23 Aparato de impresion magneto-optico. Expired - Lifetime ES2104847T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30717091 1991-10-28
JP4300562A JPH05197903A (ja) 1991-10-28 1992-10-14 光磁気記録装置

Publications (1)

Publication Number Publication Date
ES2104847T3 true ES2104847T3 (es) 1997-10-16

Family

ID=26562380

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92309749T Expired - Lifetime ES2104847T3 (es) 1991-10-28 1992-10-23 Aparato de impresion magneto-optico.

Country Status (5)

Country Link
US (1) US5627804A (es)
EP (1) EP0540264B1 (es)
JP (1) JPH05197903A (es)
DE (1) DE69222111T2 (es)
ES (1) ES2104847T3 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3485266D1 (de) * 1983-07-11 1991-12-19 Nippon Telegraph & Telephone Verfahren zum direkten uebertragen von bildern.
JP2000048422A (ja) * 1998-07-30 2000-02-18 Canon Inc 光磁気記録用磁気ヘッドおよび光磁気記録装置
JP3647651B2 (ja) 1998-08-20 2005-05-18 富士通株式会社 光磁気記憶装置の調整方法及び光磁気記憶装置
JP2001229502A (ja) * 2000-02-10 2001-08-24 Sharp Corp 磁気ヘッドおよびそれを用いる磁気ヘッドアセンブリ
US6728065B2 (en) * 2001-03-29 2004-04-27 Seagate Technology Llc Single pole magnetic recording head for perpendicular magnetic recording
US6975049B2 (en) * 2003-10-29 2005-12-13 A. O. Smith Corporation Electrical machine and method of manufacturing the same

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810245A (en) * 1971-06-28 1974-05-07 Sony Corp Single crystal ferrite magnetic head
JPS4838826U (es) * 1971-09-10 1973-05-14
JPS5496012A (en) * 1978-01-13 1979-07-30 Victor Co Of Japan Ltd Magnetic head
JPS55125519A (en) * 1979-03-23 1980-09-27 Hitachi Ltd Magnetic head
JPS6047240B2 (ja) * 1980-05-16 1985-10-21 ソニー株式会社 フエライト単結晶
JPS56163518A (en) * 1980-05-16 1981-12-16 Hitachi Ltd Magnetic head
JPS5755522A (en) * 1980-09-22 1982-04-02 Hitachi Ltd Magnetic head
JPS5891517A (ja) * 1981-11-27 1983-05-31 Hitachi Ltd 磁気記録再生装置
JPS61292210A (ja) * 1985-06-20 1986-12-23 Canon Electronics Inc 磁気ヘツド
JP2664183B2 (ja) * 1988-02-24 1997-10-15 日立金属株式会社 光磁気記録用磁気ヘッド
JPH0244099A (ja) * 1988-04-14 1990-02-14 Hitachi Metals Ltd 単結晶フェライト、それを用いた磁気ヘッド及び単結晶フェライトの製造方法
US5084795A (en) * 1989-02-08 1992-01-28 Matsushita Electric Industrial Co., Ltd. Magnetic head and method of manufacturing the same
JPH02126408A (ja) * 1989-09-08 1990-05-15 Hitachi Ltd 磁気ヘッド
JP2836123B2 (ja) * 1989-10-13 1998-12-14 富士ゼロックス株式会社 光磁気記録型記録装置の浮動ヘッド
JPH03152709A (ja) * 1989-11-09 1991-06-28 Hitachi Metals Ltd 浮上型複合磁気ヘッド
US5233492A (en) * 1989-11-14 1993-08-03 Hitachi Metals, Ltd. Flying type composite magnetic head having Mn-Zn ferrite core
EP0439323B1 (en) * 1990-01-23 1996-04-17 Canon Kabushiki Kaisha Magneto-optical recording apparatus
JP2941886B2 (ja) * 1990-04-24 1999-08-30 キヤノン電子株式会社 磁気ヘッド
CA2043995C (en) * 1990-06-13 1997-06-24 Kenji Ohta Magneto-optical recording/reproducing device
JPH0494502A (ja) * 1990-08-10 1992-03-26 Furukawa Electric Co Ltd:The 高透磁率材料とその製造方法並びに高透磁率合金粉末の製造方法
US5202863A (en) * 1990-09-11 1993-04-13 Matsushita Electric Industrial Co., Ltd. Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof
KR100242036B1 (ko) * 1991-01-08 2000-02-01 다카노 야스아키 자기 헤드

Also Published As

Publication number Publication date
EP0540264B1 (en) 1997-09-10
DE69222111T2 (de) 1998-01-22
DE69222111D1 (de) 1997-10-16
EP0540264A2 (en) 1993-05-05
EP0540264A3 (en) 1993-09-08
US5627804A (en) 1997-05-06
JPH05197903A (ja) 1993-08-06

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