DE3804733C2 - - Google Patents
Info
- Publication number
- DE3804733C2 DE3804733C2 DE3804733A DE3804733A DE3804733C2 DE 3804733 C2 DE3804733 C2 DE 3804733C2 DE 3804733 A DE3804733 A DE 3804733A DE 3804733 A DE3804733 A DE 3804733A DE 3804733 C2 DE3804733 C2 DE 3804733C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic head
- magnetic
- recording
- data carrier
- magnetic field
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 6
- 230000009182 swimming Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 239000011253 protective coating Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241000186310 Brevibacterium linens Species 0.000 description 1
- 235000004522 Pentaglottis sempervirens Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
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
-
- 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
- G11B11/10504—Recording
- G11B11/10508—Recording by modulating only the magnetic field at the transducer
-
- 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
- G11B11/10517—Overwriting or erasing
-
- 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
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62050040A JP2575687B2 (ja) | 1987-03-06 | 1987-03-06 | 光磁気記憶装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3804733A1 DE3804733A1 (de) | 1988-09-15 |
| DE3804733C2 true DE3804733C2 (enrdf_load_stackoverflow) | 1992-08-06 |
Family
ID=12847886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3804733A Granted DE3804733A1 (de) | 1987-03-06 | 1988-02-15 | Magneto-optische speichereinrichtung |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2575687B2 (enrdf_load_stackoverflow) |
| KR (1) | KR910002755B1 (enrdf_load_stackoverflow) |
| DE (1) | DE3804733A1 (enrdf_load_stackoverflow) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0384472B1 (en) | 1989-02-23 | 1997-09-10 | Fuji Photo Film Co., Ltd. | Resin composition and packaging material for photosensitive materials |
| JPH02226563A (ja) * | 1989-02-27 | 1990-09-10 | Hitachi Ltd | 高浮上磁気ヘッド |
| DE69019860T2 (de) * | 1989-03-31 | 1995-12-14 | Hitachi Ltd | Magnettooptisches Aufzeichnungsgerät. |
| US5321672A (en) * | 1989-04-19 | 1994-06-14 | Hitachi, Ltd. | Method of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domains |
| JP2746306B2 (ja) * | 1989-05-26 | 1998-05-06 | キヤノン株式会社 | 光磁気記録再生装置 |
| JPH0340250A (ja) * | 1989-07-06 | 1991-02-21 | Matsushita Electric Ind Co Ltd | 光磁気ディスクおよび光磁気ディスク装置 |
| US5172364A (en) * | 1989-08-01 | 1992-12-15 | Mitsubishi Denki Kabushiki Kaisha | Magneto-optic recording apparatus with controlled magnetic field generation |
| JP2574903B2 (ja) * | 1989-10-11 | 1997-01-22 | シャープ株式会社 | 光磁気記録装置 |
| JP2730224B2 (ja) * | 1989-11-15 | 1998-03-25 | 松下電器産業株式会社 | 光磁気ディスク |
| JP2730223B2 (ja) * | 1989-11-15 | 1998-03-25 | 松下電器産業株式会社 | 光磁気ディスク |
| JPH0775042B2 (ja) * | 1990-06-13 | 1995-08-09 | シャープ株式会社 | 光磁気記録再生装置 |
| EP0592219B1 (en) * | 1992-10-09 | 2001-07-25 | Canon Kabushiki Kaisha | Magnetic head for magneto-optical recording, and magneto-optical recording apparatus |
| JPH07176103A (ja) * | 1993-12-20 | 1995-07-14 | Canon Inc | 光磁気記録再生システムならびにこれに用いる磁気ヘッド及び光磁気記録媒体 |
| JP2827869B2 (ja) * | 1993-12-28 | 1998-11-25 | 日本電気株式会社 | 光磁気記録媒体の再生方法 |
| JP2658866B2 (ja) * | 1994-03-04 | 1997-09-30 | 株式会社日立製作所 | 光磁気記憶方法 |
| US6404705B1 (en) | 1997-03-14 | 2002-06-11 | Hitachi Maxell, Ltd. | Magneto-optical disk apparatus having an adjustment mechanism for setting the position of magnetic heads |
| KR100708097B1 (ko) * | 2000-07-24 | 2007-04-16 | 삼성전자주식회사 | 스윙암 구동방식의 광기록재생장치 및 이광기록재생장치에 적용되는 광디스크 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH065585B2 (ja) * | 1984-02-15 | 1994-01-19 | 株式会社日立製作所 | 光磁気記憶装置 |
| JPH0648806B2 (ja) * | 1985-10-09 | 1994-06-22 | 松下電器産業株式会社 | 信号多重装置 |
-
1987
- 1987-03-06 JP JP62050040A patent/JP2575687B2/ja not_active Expired - Lifetime
-
1988
- 1988-02-15 DE DE3804733A patent/DE3804733A1/de active Granted
- 1988-02-15 KR KR1019880001464A patent/KR910002755B1/ko not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63217548A (ja) | 1988-09-09 |
| DE3804733A1 (de) | 1988-09-15 |
| JP2575687B2 (ja) | 1997-01-29 |
| KR880011753A (ko) | 1988-10-31 |
| KR910002755B1 (ko) | 1991-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |