KR900013473A - 자기광학 레코딩 시스템 - Google Patents

자기광학 레코딩 시스템 Download PDF

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Publication number
KR900013473A
KR900013473A KR1019900001722A KR900001722A KR900013473A KR 900013473 A KR900013473 A KR 900013473A KR 1019900001722 A KR1019900001722 A KR 1019900001722A KR 900001722 A KR900001722 A KR 900001722A KR 900013473 A KR900013473 A KR 900013473A
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KR
South Korea
Prior art keywords
housing
open end
optical system
magnetic material
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.)
Withdrawn
Application number
KR1019900001722A
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English (en)
Inventor
존 보겔게상 피터
Original Assignee
도날드 밀러 셀
미네소타 마이닝 앤드 매뉴팩츄어링 컴패니
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 도날드 밀러 셀, 미네소타 마이닝 앤드 매뉴팩츄어링 컴패니 filed Critical 도날드 밀러 셀
Publication of KR900013473A publication Critical patent/KR900013473A/ko
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • 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
    • 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
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

내용 없음

Description

자기광학 레코딩 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본발명의 제1실시예를 도시한 단면도
제2도는 본발명의 제2실시예를 도시한 횡단면도.
제3도는 본발명의 제3실시예를 도시한 횡단면도.

Claims (5)

  1. 레코딩면(25)을 가진 레코딩매체(28)로부터 정보를 기록, 레코딩 또는 삭제하기 위한 광학 시스템에 있어서, 상기 레코딩매체(28)와 대향하는 개방단부를 가진 관형 하우징(11)과; 상기 하우징(11)를 통해 상기 레코딩매체(28)로 광(15)비임을 공급하는 광원과; 상기 레코딩면(25)에서 광(15)비임을 접속하기 위해 상기 하우징(11)내에 장착되는 수단(13,14)과; 상기 레코딩매체(28)와 대향하는 상기 개방단부에서 상기 하우징(11)을 에워싸고 상기 하우징(11)의 개방단부에 걸쳐서 연장하는 자화물질(11,12,17,40,41)과; 상기 하우징(11)의 개방단부에 걸쳐서 소정의 크기 만큼 연장하고 상기 광(15)비임을 자유롭게 통과시키기 위해 상기 자화물질에 배치된 개구(19)와; 상기 레코딩면(15)에서 자장을 형성하기 위해 상기 하우징(11)과 상기 자화물질(11,12,17,40,41)을 에워싸는 코일(18)을 가진 전자석(29)을 구비하는 것을 특징으로 하는 광학시스템.
  2. 제1항에 있어서, 상기 관형 하우징(11)은 그 하우징(11)을 에워싸는 자화물질(11,12,17,40,41)로 구성되고 그리고 상기 자화 물질과는 다른 자화물질로 구성되는 것을 특징으로 하는 광학시스템.
  3. 제2항에 있어서, 상기 개방단부를 걸쳐서 연장하는 상기 자화물질(11,12,17,40,41)은 상기 하우징(11)의 개방단부에 부착된 자화물질의 디스크인 것을 특징으로 하는 광학시스템.
  4. 제3항에 있어서, 상기 전자석 코일(18)은 상기 하우징(11)과 접촉해서 에워싸도록 배치된 것을 특징으로 하는 광학시스템.
  5. 제1항에 있어서, 상기 하우징(11)을 에워싸고 그리고 상기 개방단부를 걸쳐서 연장하는 상기 자화물질은 상기 하우징(11)을 에워싸는 환형벽과 상기 환형벽을 폐쇄하는 단부를 가진 캡(40)인 것을 특징으로 하는 광학시스템.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900001722A 1989-02-16 1990-02-13 자기광학 레코딩 시스템 Withdrawn KR900013473A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/311,457 US5022018A (en) 1989-02-16 1989-02-16 System for applying a perpendicular magnetic field to the illuminated side of a magneto-optic medium
US311457 1989-02-16

Publications (1)

Publication Number Publication Date
KR900013473A true KR900013473A (ko) 1990-09-05

Family

ID=23206946

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900001722A Withdrawn KR900013473A (ko) 1989-02-16 1990-02-13 자기광학 레코딩 시스템

Country Status (6)

Country Link
US (1) US5022018A (ko)
EP (1) EP0383526B1 (ko)
JP (1) JPH02247849A (ko)
KR (1) KR900013473A (ko)
CA (1) CA2008019A1 (ko)
DE (1) DE69016055D1 (ko)

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JPH02260205A (ja) * 1989-03-31 1990-10-23 Sharp Corp 光磁気複合ヘッド
US5287334A (en) * 1989-07-29 1994-02-15 Sony Corporation Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus
JPH03122855A (ja) * 1989-10-06 1991-05-24 Fuji Xerox Co Ltd 光磁気記録型記録装置の浮動ヘッド
JP2861188B2 (ja) * 1990-01-31 1999-02-24 ソニー株式会社 光磁気記録再生装置
USRE35608E (en) * 1990-04-28 1997-09-16 Sony Corporation Recording and/or reproducing apparatus for using magneto-optical disc
US5247496A (en) * 1990-04-28 1993-09-21 Sony Corporation Recording and/or reproducing apparatus for using magneto-optical disc
FR2676303B1 (fr) * 1991-05-07 1993-07-16 Commissariat Energie Atomique Tete magneto-optique integree de lecture et d'ecriture et procede de realisation.
US5367508A (en) * 1993-02-10 1994-11-22 Seiko Epson Corporation Magnetic field generation mechanism for magneto-optical recording
FR2705488B1 (fr) * 1993-05-14 1995-06-23 Commissariat Energie Atomique Tête magnétique d'écriture pour enregistrement magnéto-optique.
US6226233B1 (en) 1996-07-30 2001-05-01 Seagate Technology, Inc. Magneto-optical system utilizing MSR media
WO1998048409A2 (en) * 1997-04-18 1998-10-29 Read-Rite Corporation Electro-magnetic coil assembly
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
JPH11102548A (ja) 1997-09-29 1999-04-13 Matsushita Electric Ind Co Ltd ディスク記録再生装置
US5978319A (en) * 1997-11-06 1999-11-02 Read-Rite Corporation Thin electro-magnetic coil assembly for attachment to a slider
JPH11335269A (ja) 1998-05-19 1999-12-07 Hisamitsu Pharmaceut Co Inc 遺伝子関連医薬の経口投与固形製剤
JP4033082B2 (ja) 2002-11-07 2008-01-16 株式会社村田製作所 Ｄｃ−ｄｃコンバータ
JP2008035605A (ja) * 2006-07-28 2008-02-14 Nippon Densan Corp モータの製造方法およびモータ
US8169881B2 (en) * 2008-12-31 2012-05-01 Hitachi Global Storage Technologies Netherlands B.V. Thermally assisted recording head having recessed waveguide with near field transducer and methods of making same

Family Cites Families (14)

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JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device
JPS57113402A (en) * 1981-01-05 1982-07-14 Ricoh Co Ltd Method and device for vertical thermomagnetic recording
JPS57133537A (en) * 1981-02-06 1982-08-18 Sharp Corp Magnetic and optical recording and reproducing head
JPS57162137A (en) * 1981-03-28 1982-10-05 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording and reproducing system
US4660190A (en) * 1983-01-25 1987-04-21 Sharp Kabushiki Kaisha Optical focus position control in optical disc apparatus
JPS59148159A (ja) * 1983-02-15 1984-08-24 Canon Inc 光ピツクアツプ装置
US4610009A (en) * 1983-05-23 1986-09-02 Xerox Corporation Writing, erasing and readout system for a magneto-optic recording medium
JPS60214438A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
JPS60214439A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
JPS60261052A (ja) * 1984-06-06 1985-12-24 Fujitsu Ltd 光磁気デイスク用光学ヘツド
JPH06105507B2 (ja) * 1984-10-26 1994-12-21 日本電気株式会社 光磁気記録再生消去装置
JP2574747B2 (ja) * 1985-11-20 1997-01-22 株式会社日立製作所 光磁気記録装置
US4701894A (en) * 1986-03-28 1987-10-20 Rca Corporation Magnetic biasing apparatus for magneto-optic recording including a magnetic circuit
US4868802A (en) * 1986-07-28 1989-09-19 Kabushiki Kaisha Toshiba Magnetooptic recording and erasing head which performs biasing, tracking and focusing

Also Published As

Publication number Publication date
JPH02247849A (ja) 1990-10-03
DE69016055D1 (de) 1995-03-02
EP0383526B1 (en) 1995-01-18
EP0383526A2 (en) 1990-08-22
US5022018A (en) 1991-06-04
CA2008019A1 (en) 1990-08-16
EP0383526A3 (en) 1991-09-04

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Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19900213

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid