KR880013130A - 광자기 기록장치의 자기 바이어스 코일 - Google Patents

광자기 기록장치의 자기 바이어스 코일 Download PDF

Info

Publication number
KR880013130A
KR880013130A KR1019880003845A KR880003845A KR880013130A KR 880013130 A KR880013130 A KR 880013130A KR 1019880003845 A KR1019880003845 A KR 1019880003845A KR 880003845 A KR880003845 A KR 880003845A KR 880013130 A KR880013130 A KR 880013130A
Authority
KR
South Korea
Prior art keywords
recording
coil
recording disk
magneto
electromagnetic
Prior art date
Application number
KR1019880003845A
Other languages
English (en)
Other versions
KR910003934B1 (ko
Inventor
주니찌 이찌하라
Original Assignee
야마모도 다꾸마
후지쓰 가부시끼가이샤
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 야마모도 다꾸마, 후지쓰 가부시끼가이샤 filed Critical 야마모도 다꾸마
Publication of KR880013130A publication Critical patent/KR880013130A/ko
Application granted granted Critical
Publication of KR910003934B1 publication Critical patent/KR910003934B1/ko

Links

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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • 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

Landscapes

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

Abstract

내용 없음

Description

광자기 기록장치의 자기 바이어스 코일
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제7도는 자기 요크를 가지는 본 발명의 전자기 바이어스 코일의 치수를 나타낸 구조도, 제11도는 제7도에 도시한 본 발명의 전자기 바이어스 코일을 사용할때에 기록매체의 표면을 흐르는 자계 강도의 분포도, 제12도는 제7도에 도시한 본 발명인 전자기 바이어스 코일을 사용한 광자기 기록 디스크 장치의 단면도.

Claims (4)

  1. 광자기 기록 디스크 장치에 있어서, 하단에 수직이방성 자성체가 있는 기록 디스크와, 상기 수직 이방성 자성체의 기록비트에, 기록 디스크면에 수직으로 존재하는 자계를 인가하기 위한 전자기 바이어스 코일과, 광빔을 기록 비트상에 집광시키고, 전자기 바이어스 코일과, 동일한 기록 디스크의 측면상에 놓여 있으며, 전자기 바이어스 코일과 동축선상에 위치되어 있는 광학 시스템과, 기록비트상에서 자계를 발생시키는데 필요한 전자기 코일의 전류가 감소되도록, 코일의 외부 원통면뿐만 아니라 광시스템을 설치할 수 있도록 하게하는 개구가 있는 기록디스크 반대측의 코일의 평탄부분을 둘러싸는 연자성체로된 자기 요크와로 구성되어 있는 광자기 기록 디스크 장치.
  2. 제1항에 있어서, 상기 연자성체가 연철, 실리콘 강철 및 연페어라이트로 이루어진 그룹으로부터 선택되는 장치.
  3. 제1항에 있어서, 상기 자기 요크를 포함하는 전자기 바이어스 코일의 한 셋트가 기록 디스크의 한측에 있는 장치.
  4. 제1항에 있어서, 상기 자기 요크를 포함하는 두셋트의 전자기 바이어스 코일이 기록 디스크에 대하여 서로 대칭적으로 놓여져 있는 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880003845A 1987-04-10 1988-04-06 광자기 기록장치의 자기 바이어스 코일 KR910003934B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1987055202U JPH0633525Y2 (ja) 1987-04-10 1987-04-10 光磁気デイスク装置の磁界印加機構
JP87-055202 1987-04-10
JP(?)62-55202 1987-04-10

Publications (2)

Publication Number Publication Date
KR880013130A true KR880013130A (ko) 1988-11-30
KR910003934B1 KR910003934B1 (ko) 1991-06-17

Family

ID=12992086

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880003845A KR910003934B1 (ko) 1987-04-10 1988-04-06 광자기 기록장치의 자기 바이어스 코일

Country Status (7)

Country Link
US (1) US4890178A (ko)
EP (1) EP0286070B1 (ko)
JP (1) JPH0633525Y2 (ko)
KR (1) KR910003934B1 (ko)
CA (1) CA1306056C (ko)
DE (1) DE3877236T2 (ko)
ES (1) ES2044996T3 (ko)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105408A (en) * 1988-05-12 1992-04-14 Digital Equipment Corporation Optical head with flying lens
NL8902615A (nl) * 1988-11-15 1990-06-01 Seiko Epson Corp Optisch registratiestelsel.
US5287334A (en) * 1989-07-29 1994-02-15 Sony Corporation Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus
US5197049A (en) * 1989-08-11 1993-03-23 Apple Computer, Inc. Head and media for optical data storage
KR930009225B1 (ko) * 1989-09-05 1993-09-24 미쯔비시덴기 가부시끼가이샤 광자기 기록 매체, 광자기 기록 장치 및 광자기 기록 매체의 제조방법
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
US5124961A (en) * 1989-12-28 1992-06-23 Fuji Xerox Co., Ltd. Floating head for use with a recording apparatus of magneto-optical memory device
JPH03250402A (ja) * 1990-02-28 1991-11-08 Canon Inc 磁気記録装置及びシステム
US5260921A (en) * 1991-10-01 1993-11-09 Tdk Corporation Magnetooptical recording method
US5307328A (en) * 1991-12-30 1994-04-26 U.S. Philips Corporation Magneto-optical scanning device with small coil
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
US5978319A (en) * 1997-11-06 1999-11-02 Read-Rite Corporation Thin electro-magnetic coil assembly for attachment to a slider
US6351436B1 (en) * 1998-05-11 2002-02-26 Maxtor Corporation Field enhancing magnetic pole for magneto-optical recording and reproducing device
US6130864A (en) * 1999-03-04 2000-10-10 Terastor Corporation Method and apparatus for generating magnetic field for magneto-optic recording system
EP1406256A4 (en) * 2001-06-01 2007-01-03 Fujitsu Ltd DEVICE FOR MAGNETO-OPTICAL RECORDING MEDIUM
EP1570472A1 (en) * 2002-10-29 2005-09-07 Koninklijke Philips Electronics N.V. Magneto-optical device
US20060171074A1 (en) * 2004-02-25 2006-08-03 Wagner J A Shutter lock for use in a flexible data storage card

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626114A (en) * 1969-03-10 1971-12-07 California Inst Of Techn Thermomagnetic recording and magneto-optic playback system
JPS57162137A (en) * 1981-03-28 1982-10-05 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording and reproducing system
US4610009A (en) * 1983-05-23 1986-09-02 Xerox Corporation Writing, erasing and readout system for a magneto-optic recording medium
JPS6029904A (ja) * 1983-07-28 1985-02-15 Seiko Instr & Electronics Ltd 光磁気記録用ヘッド
JPH065585B2 (ja) * 1984-02-15 1994-01-19 株式会社日立製作所 光磁気記憶装置
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

Also Published As

Publication number Publication date
DE3877236D1 (de) 1993-02-18
ES2044996T3 (es) 1994-01-16
CA1306056C (en) 1992-08-04
JPS63161404U (ko) 1988-10-21
JPH0633525Y2 (ja) 1994-08-31
KR910003934B1 (ko) 1991-06-17
EP0286070A3 (en) 1990-09-12
EP0286070A2 (en) 1988-10-12
DE3877236T2 (de) 1993-08-05
EP0286070B1 (en) 1993-01-07
US4890178A (en) 1989-12-26

Similar Documents

Publication Publication Date Title
KR880013130A (ko) 광자기 기록장치의 자기 바이어스 코일
US2351003A (en) Recording and reproducing of vibrations
CA1280207C (en) Device for producing a high frequency modulation magnetic field usedin magneto-optical recording
KR900013473A (ko) 자기광학 레코딩 시스템
ATE83183T1 (de) Automatisch geregelte heizeinrichtung.
KR870009352A (ko) 전기기계 변환기
EP0620573A3 (en) Magnetic thin film devices for flux spreading.
FR2572178B1 (fr) Nouveau dispositif magnetique destine a retirer des billes de gel magnetique d&#39;un milieu a analyser et a les transferer sur un milieu de dosage immunoenzymatique
ES519104A0 (es) Dispositivo de electroiman con equipamiento movil de iman permanente.
GB1279509A (en) Improvements in or relating to plunger-type armature lifting magnets
KR880011757A (ko) 자계발생장치
US5020042A (en) Apparatus for selectively inverting a magnetic bias field using a rod-shaped permanent magnet surrounded with an electrically conductive damping means
KR880004596A (ko) 강자성 공명 장치
KR910013067A (ko) 자기 변환기 장치
US3038131A (en) Microwave switching device
KR900016948A (ko) 자기기록 장치
JPS55129908A (en) Thermomagnetic recording and reproducing device
Meydan et al. Influence of bending stress on domain motion in amorphous material based magneto-elastic transducers
SE8500609D0 (sv) Anordning for beroringsfri avkenning av en rorlig, magnetiserbar del
KR930004668A (ko) 자력을 이용한 전자 밸브
JPS6455701A (en) Magnetic field impressing electromagnet for magneto-optical disk
DE69020840D1 (de) Erzeugungsvorrichtung des äusseren Magnetfeldes für magnetooptisches Plattengerät.
KR950035520A (ko) 고주파 가열장치 및 고주파 가열방법
Franyuk A Magnetic Method of Sorting Steel Pipe
KR930018481A (ko) 광 자기 기록/재생 장치

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19980605

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee