JPS6196540A - 光磁気記録再生装置 - Google Patents

光磁気記録再生装置

Info

Publication number
JPS6196540A
JPS6196540A JP21894084A JP21894084A JPS6196540A JP S6196540 A JPS6196540 A JP S6196540A JP 21894084 A JP21894084 A JP 21894084A JP 21894084 A JP21894084 A JP 21894084A JP S6196540 A JPS6196540 A JP S6196540A
Authority
JP
Japan
Prior art keywords
magneto
objective lens
optical
optical recording
lens holder
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.)
Granted
Application number
JP21894084A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0580059B2 (enrdf_load_stackoverflow
Inventor
Naoki Kuwata
直樹 鍬田
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP21894084A priority Critical patent/JPS6196540A/ja
Publication of JPS6196540A publication Critical patent/JPS6196540A/ja
Publication of JPH0580059B2 publication Critical patent/JPH0580059B2/ja
Granted legal-status Critical Current

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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0927—Electromechanical actuators for lens positioning for focusing only
    • 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
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/1056—Switching or mechanically reversing the magnetic field generator
    • 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
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
JP21894084A 1984-10-18 1984-10-18 光磁気記録再生装置 Granted JPS6196540A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21894084A JPS6196540A (ja) 1984-10-18 1984-10-18 光磁気記録再生装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21894084A JPS6196540A (ja) 1984-10-18 1984-10-18 光磁気記録再生装置

Publications (2)

Publication Number Publication Date
JPS6196540A true JPS6196540A (ja) 1986-05-15
JPH0580059B2 JPH0580059B2 (enrdf_load_stackoverflow) 1993-11-05

Family

ID=16727710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21894084A Granted JPS6196540A (ja) 1984-10-18 1984-10-18 光磁気記録再生装置

Country Status (1)

Country Link
JP (1) JPS6196540A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4914643A (en) * 1986-11-20 1990-04-03 Ricoh Company, Ltd. Overwriting photomagnetic recording apparatus having single light source and fixed-field generator
WO1990003643A1 (en) * 1988-09-20 1990-04-05 Hewlett-Packard Company Bias field switching system for magneto-optic disk drive
US4928192A (en) * 1987-12-23 1990-05-22 Konica Corporation Process for identifying disks and automatically configuring a disk drive system
US4959820A (en) * 1986-04-22 1990-09-25 Sony Corporation Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field
US4984226A (en) * 1986-07-28 1991-01-08 Kabushiki Kaisha Toshiba Magnetoptic head for recording/erasing information using a cylindrical hollow permanent magnet
US4993009A (en) * 1986-07-14 1991-02-12 Canon Kabushiki Kaisha Opto-magnetic recording apparatus with a bias magnetic field generating means movable parallel to a recording surface of a recording medium
US5216643A (en) * 1988-09-20 1993-06-01 Hewlett-Packard Company Rotary arm and optical head for a magneto-optic disk drive
US5345431A (en) * 1992-09-14 1994-09-06 Hewlett-Packard Company Write and erase assembly for magneto-optic drive apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959820A (en) * 1986-04-22 1990-09-25 Sony Corporation Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field
US4993009A (en) * 1986-07-14 1991-02-12 Canon Kabushiki Kaisha Opto-magnetic recording apparatus with a bias magnetic field generating means movable parallel to a recording surface of a recording medium
US4984226A (en) * 1986-07-28 1991-01-08 Kabushiki Kaisha Toshiba Magnetoptic head for recording/erasing information using a cylindrical hollow permanent magnet
US4914643A (en) * 1986-11-20 1990-04-03 Ricoh Company, Ltd. Overwriting photomagnetic recording apparatus having single light source and fixed-field generator
US4928192A (en) * 1987-12-23 1990-05-22 Konica Corporation Process for identifying disks and automatically configuring a disk drive system
WO1990003643A1 (en) * 1988-09-20 1990-04-05 Hewlett-Packard Company Bias field switching system for magneto-optic disk drive
US4977549A (en) * 1988-09-20 1990-12-11 Hewlett-Packard Company Write and erase magnetic bias field switching system for a magneto-optic disk drive
US5216643A (en) * 1988-09-20 1993-06-01 Hewlett-Packard Company Rotary arm and optical head for a magneto-optic disk drive
US5345431A (en) * 1992-09-14 1994-09-06 Hewlett-Packard Company Write and erase assembly for magneto-optic drive apparatus

Also Published As

Publication number Publication date
JPH0580059B2 (enrdf_load_stackoverflow) 1993-11-05

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term