DE69222111D1 - Magneto-optisches Aufzeichnungsgerät - Google Patents
Magneto-optisches AufzeichnungsgerätInfo
- Publication number
- DE69222111D1 DE69222111D1 DE69222111T DE69222111T DE69222111D1 DE 69222111 D1 DE69222111 D1 DE 69222111D1 DE 69222111 T DE69222111 T DE 69222111T DE 69222111 T DE69222111 T DE 69222111T DE 69222111 D1 DE69222111 D1 DE 69222111D1
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- recording device
- optical recording
- optical
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
-
- 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
-
- 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
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Soft Magnetic Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30717091 | 1991-10-28 | ||
JP4300562A JPH05197903A (ja) | 1991-10-28 | 1992-10-14 | 光磁気記録装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69222111D1 true DE69222111D1 (de) | 1997-10-16 |
DE69222111T2 DE69222111T2 (de) | 1998-01-22 |
Family
ID=26562380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69222111T Expired - Fee Related DE69222111T2 (de) | 1991-10-28 | 1992-10-23 | Magneto-optisches Aufzeichnungsgerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US5627804A (de) |
EP (1) | EP0540264B1 (de) |
JP (1) | JPH05197903A (de) |
DE (1) | DE69222111T2 (de) |
ES (1) | ES2104847T3 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985000483A1 (en) * | 1983-07-11 | 1985-01-31 | Nippon Telegraph And Telephone Public Corporation | Method for directly transmitting images |
JP2000048422A (ja) * | 1998-07-30 | 2000-02-18 | Canon Inc | 光磁気記録用磁気ヘッドおよび光磁気記録装置 |
JP3647651B2 (ja) | 1998-08-20 | 2005-05-18 | 富士通株式会社 | 光磁気記憶装置の調整方法及び光磁気記憶装置 |
JP2001229502A (ja) * | 2000-02-10 | 2001-08-24 | Sharp Corp | 磁気ヘッドおよびそれを用いる磁気ヘッドアセンブリ |
US6728065B2 (en) * | 2001-03-29 | 2004-04-27 | Seagate Technology Llc | Single pole magnetic recording head for perpendicular magnetic recording |
US6975049B2 (en) * | 2003-10-29 | 2005-12-13 | A. O. Smith Corporation | Electrical machine and method of manufacturing the same |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3810245A (en) * | 1971-06-28 | 1974-05-07 | Sony Corp | Single crystal ferrite magnetic head |
JPS4838826U (de) * | 1971-09-10 | 1973-05-14 | ||
JPS5496012A (en) * | 1978-01-13 | 1979-07-30 | Victor Co Of Japan Ltd | Magnetic head |
JPS55125519A (en) * | 1979-03-23 | 1980-09-27 | Hitachi Ltd | Magnetic head |
JPS6047240B2 (ja) * | 1980-05-16 | 1985-10-21 | ソニー株式会社 | フエライト単結晶 |
JPS56163518A (en) * | 1980-05-16 | 1981-12-16 | Hitachi Ltd | Magnetic head |
JPS5755522A (en) * | 1980-09-22 | 1982-04-02 | Hitachi Ltd | Magnetic head |
JPS5891517A (ja) * | 1981-11-27 | 1983-05-31 | Hitachi Ltd | 磁気記録再生装置 |
JPS61292210A (ja) * | 1985-06-20 | 1986-12-23 | Canon Electronics Inc | 磁気ヘツド |
JP2664183B2 (ja) * | 1988-02-24 | 1997-10-15 | 日立金属株式会社 | 光磁気記録用磁気ヘッド |
JPH0244099A (ja) * | 1988-04-14 | 1990-02-14 | Hitachi Metals Ltd | 単結晶フェライト、それを用いた磁気ヘッド及び単結晶フェライトの製造方法 |
US5084795A (en) * | 1989-02-08 | 1992-01-28 | Matsushita Electric Industrial Co., Ltd. | Magnetic head and method of manufacturing the same |
JPH02126408A (ja) * | 1989-09-08 | 1990-05-15 | Hitachi Ltd | 磁気ヘッド |
JP2836123B2 (ja) * | 1989-10-13 | 1998-12-14 | 富士ゼロックス株式会社 | 光磁気記録型記録装置の浮動ヘッド |
JPH03152709A (ja) * | 1989-11-09 | 1991-06-28 | Hitachi Metals Ltd | 浮上型複合磁気ヘッド |
US5233492A (en) * | 1989-11-14 | 1993-08-03 | Hitachi Metals, Ltd. | Flying type composite magnetic head having Mn-Zn ferrite core |
DE69118722T2 (de) * | 1990-01-23 | 1996-09-19 | Canon Kk | Magnetooptisches Aufzeichnungsgerät |
JP2941886B2 (ja) * | 1990-04-24 | 1999-08-30 | キヤノン電子株式会社 | 磁気ヘッド |
CA2043995C (en) * | 1990-06-13 | 1997-06-24 | Kenji Ohta | Magneto-optical recording/reproducing device |
JPH0494502A (ja) * | 1990-08-10 | 1992-03-26 | Furukawa Electric Co Ltd:The | 高透磁率材料とその製造方法並びに高透磁率合金粉末の製造方法 |
US5202863A (en) * | 1990-09-11 | 1993-04-13 | Matsushita Electric Industrial Co., Ltd. | Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof |
KR100242036B1 (ko) * | 1991-01-08 | 2000-02-01 | 다카노 야스아키 | 자기 헤드 |
-
1992
- 1992-10-14 JP JP4300562A patent/JPH05197903A/ja active Pending
- 1992-10-23 EP EP92309749A patent/EP0540264B1/de not_active Expired - Lifetime
- 1992-10-23 DE DE69222111T patent/DE69222111T2/de not_active Expired - Fee Related
- 1992-10-23 ES ES92309749T patent/ES2104847T3/es not_active Expired - Lifetime
-
1996
- 1996-06-05 US US08/658,399 patent/US5627804A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH05197903A (ja) | 1993-08-06 |
DE69222111T2 (de) | 1998-01-22 |
US5627804A (en) | 1997-05-06 |
EP0540264A2 (de) | 1993-05-05 |
ES2104847T3 (es) | 1997-10-16 |
EP0540264A3 (en) | 1993-09-08 |
EP0540264B1 (de) | 1997-09-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |