ATE129591T1 - Verfahren zur erhöhung der linearen schreibdichte in magnetooptischen speichermedien. - Google Patents

Verfahren zur erhöhung der linearen schreibdichte in magnetooptischen speichermedien.

Info

Publication number
ATE129591T1
ATE129591T1 AT90305396T AT90305396T ATE129591T1 AT E129591 T1 ATE129591 T1 AT E129591T1 AT 90305396 T AT90305396 T AT 90305396T AT 90305396 T AT90305396 T AT 90305396T AT E129591 T1 ATE129591 T1 AT E129591T1
Authority
AT
Austria
Prior art keywords
disk
slit
magnetoptical
storage media
writing density
Prior art date
Application number
AT90305396T
Other languages
English (en)
Inventor
Neville K S Lee
Original Assignee
Quantum Corp
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 Quantum Corp filed Critical Quantum Corp
Application granted granted Critical
Publication of ATE129591T1 publication Critical patent/ATE129591T1/de

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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
    • 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
    • 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
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Measuring Magnetic Variables (AREA)
AT90305396T 1989-06-29 1990-05-18 Verfahren zur erhöhung der linearen schreibdichte in magnetooptischen speichermedien. ATE129591T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/373,991 US5161134A (en) 1989-06-29 1989-06-29 Method for increasing linear bit density in magneto-optical storage media

Publications (1)

Publication Number Publication Date
ATE129591T1 true ATE129591T1 (de) 1995-11-15

Family

ID=23474771

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90305396T ATE129591T1 (de) 1989-06-29 1990-05-18 Verfahren zur erhöhung der linearen schreibdichte in magnetooptischen speichermedien.

Country Status (6)

Country Link
US (1) US5161134A (de)
EP (1) EP0405742B1 (de)
JP (1) JP2675653B2 (de)
AT (1) ATE129591T1 (de)
CA (1) CA2015899A1 (de)
DE (1) DE69023173T2 (de)

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US5828482A (en) * 1997-02-05 1998-10-27 Terastor Corporation Apparatus and method for directing a beam of light to a surface of an optical disk
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US5831797A (en) * 1997-07-23 1998-11-03 Seagate Technology, Inc. Slider with mesa for optical disc data storage system
US5963532A (en) * 1998-01-21 1999-10-05 Terastor Corporation Polarization rotation and phase compensation in near-field electro-optical system
US6009064A (en) * 1997-11-05 1999-12-28 Terastor Corporation Optical head having dielectric transition layer in near-field optical storage system
US6324129B1 (en) 1998-01-08 2001-11-27 Seagate Technology Llc Near field magneto-optical head having read and write pinhole apertures
US6330209B1 (en) 1998-02-20 2001-12-11 Maxoptix Corporation Load and unload control for magneto-optical disk drive
US6172944B1 (en) 1998-02-20 2001-01-09 Maxoptix Corporation Magneto-optical recording apparatus with magnetic head decoupled from objective lens focus actuator
US6104675A (en) * 1998-02-20 2000-08-15 Maxoptix Corporation Method and apparatus for reading and writing magneto-optical media
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US6172945B1 (en) 1998-09-04 2001-01-09 Maxoptix Corporation Double-sided magneto-optical recording disk
DE69941585D1 (de) * 1998-11-09 2009-12-03 Seiko Instr Inc Nahfeld Abtastkopf und Herstellungsverfahren dafür
US6324130B1 (en) 1999-01-21 2001-11-27 Maxoptix Corporation Disc drive suspension and head
US7179551B2 (en) 1999-02-12 2007-02-20 General Electric Company Poly(arylene ether) data storage media
JP2002536778A (ja) 1999-02-12 2002-10-29 ゼネラル・エレクトリック・カンパニイ データ記憶媒体
US6483299B1 (en) 1999-11-12 2002-11-19 Seagate Technology Llc Apparatus and method for measuring magnetic properties of recording mediums
CN1210692C (zh) * 2000-03-28 2005-07-13 皇家菲利浦电子有限公司 热辅助磁记录的存储介质
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Also Published As

Publication number Publication date
US5161134A (en) 1992-11-03
JPH0337849A (ja) 1991-02-19
EP0405742A3 (en) 1991-10-09
EP0405742A2 (de) 1991-01-02
JP2675653B2 (ja) 1997-11-12
EP0405742B1 (de) 1995-10-25
CA2015899A1 (en) 1990-12-29
DE69023173D1 (de) 1995-11-30
DE69023173T2 (de) 1996-04-04

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