JP2000298888A - 光磁気記録媒体 - Google Patents

光磁気記録媒体

Info

Publication number
JP2000298888A
JP2000298888A JP11108012A JP10801299A JP2000298888A JP 2000298888 A JP2000298888 A JP 2000298888A JP 11108012 A JP11108012 A JP 11108012A JP 10801299 A JP10801299 A JP 10801299A JP 2000298888 A JP2000298888 A JP 2000298888A
Authority
JP
Japan
Prior art keywords
magnetic layer
magneto
film
recording medium
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.)
Pending
Application number
JP11108012A
Other languages
English (en)
Japanese (ja)
Other versions
JP2000298888A5 (enExample
Inventor
Morimi Hashimoto
母理美 橋本
Yasuyuki Miyaoka
康之 宮岡
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
Priority to JP11108012A priority Critical patent/JP2000298888A/ja
Priority to US09/545,193 priority patent/US6343052B1/en
Publication of JP2000298888A publication Critical patent/JP2000298888A/ja
Publication of JP2000298888A5 publication Critical patent/JP2000298888A5/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G11B11/10515—Reproducing
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
JP11108012A 1999-04-15 1999-04-15 光磁気記録媒体 Pending JP2000298888A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11108012A JP2000298888A (ja) 1999-04-15 1999-04-15 光磁気記録媒体
US09/545,193 US6343052B1 (en) 1999-04-15 2000-04-07 Magneto-optical medium having film with rounded upper corner and thickness decreasing to the side end on lands

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11108012A JP2000298888A (ja) 1999-04-15 1999-04-15 光磁気記録媒体

Publications (2)

Publication Number Publication Date
JP2000298888A true JP2000298888A (ja) 2000-10-24
JP2000298888A5 JP2000298888A5 (enExample) 2004-11-18

Family

ID=14473761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11108012A Pending JP2000298888A (ja) 1999-04-15 1999-04-15 光磁気記録媒体

Country Status (2)

Country Link
US (1) US6343052B1 (enExample)
JP (1) JP2000298888A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6699602B2 (en) 2001-03-01 2004-03-02 Hitachi Maxell, Ltd. Amorphous magnetic recording medium, process for producing the same and magnetic recording and reproduction apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000072319A1 (en) * 1999-05-19 2000-11-30 Fujitsu Limited Information recording medium and manufacturing method thereof
JP2002203343A (ja) * 2000-10-31 2002-07-19 Matsushita Electric Ind Co Ltd 光ディスクおよびその製造方法
FR2827070B1 (fr) * 2001-07-04 2004-07-09 Commissariat Energie Atomique Support de stockage d'informations a reseau de plots aimantes lateralement et procede de fabrication de ce support
CN1711600A (zh) * 2002-11-01 2005-12-21 皇家飞利浦电子股份有限公司 域扩展rom介质的处理方案
JP2005011385A (ja) * 2003-06-16 2005-01-13 Canon Inc 磁区拡大型光磁気再生方法及び装置
JP2008016165A (ja) * 2006-07-10 2008-01-24 Canon Inc 記録パワー調整方法及び光ディスク装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931336A (en) * 1988-01-18 1990-06-05 Fuji Photo Film Co., Ltd. Information recording medium and method of optically recording information employing the same
JPH0423239A (ja) * 1990-05-17 1992-01-27 Sony Corp 光記録媒体
US5274623A (en) * 1990-07-19 1993-12-28 Fuji Photo Film Co., Ltd. Information recording medium having high modulation degree
JPH06290493A (ja) 1993-03-31 1994-10-18 Ricoh Co Ltd ディスク成形品取り出し方法及び装置
DE69430883T2 (de) 1993-04-02 2003-01-23 Canon K.K., Tokio/Tokyo Magneto-optisches Aufzeichnungsmedium auf dem es moglich ist, Informationen hoher Zeichendichte aufzuzeichnen und Verfahren zur Wiedergabe der aufgezeichneten Informationen
JP3332458B2 (ja) 1993-04-02 2002-10-07 キヤノン株式会社 光磁気記録媒体
JP2879185B2 (ja) * 1993-04-16 1999-04-05 ティーディーケイ株式会社 光磁気ディスク
JPH09282727A (ja) * 1996-04-15 1997-10-31 Nec Corp 光磁気記録再生装置と再生方法
JPH10228684A (ja) 1996-12-13 1998-08-25 Canon Inc 光磁気記録媒体とその製造方法及びその媒体の再生方法
JPH10275369A (ja) 1997-01-31 1998-10-13 Canon Inc 情報記録媒体の製造方法および該方法による情報記録媒体
JP3416490B2 (ja) 1997-10-21 2003-06-16 キヤノン株式会社 光磁気記録媒体および記録方法
JPH11328762A (ja) 1998-05-08 1999-11-30 Canon Inc 光磁気記録媒体

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6699602B2 (en) 2001-03-01 2004-03-02 Hitachi Maxell, Ltd. Amorphous magnetic recording medium, process for producing the same and magnetic recording and reproduction apparatus

Also Published As

Publication number Publication date
US6343052B1 (en) 2002-01-29

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