DE3681679D1 - Thermomagnetischer aufnahmekopf und herstellungsverfahren. - Google Patents

Thermomagnetischer aufnahmekopf und herstellungsverfahren.

Info

Publication number
DE3681679D1
DE3681679D1 DE8686402193T DE3681679T DE3681679D1 DE 3681679 D1 DE3681679 D1 DE 3681679D1 DE 8686402193 T DE8686402193 T DE 8686402193T DE 3681679 T DE3681679 T DE 3681679T DE 3681679 D1 DE3681679 D1 DE 3681679D1
Authority
DE
Germany
Prior art keywords
manufacturing
recording head
thermomagnetic recording
thermomagnetic
head
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
Application number
DE8686402193T
Other languages
English (en)
Inventor
Jean-Claude Lehureau
Jean-Paul Castera
Ernst Huijer
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of DE3681679D1 publication Critical patent/DE3681679D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4907—Details for scanning
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4907—Details for scanning
    • G11B5/4915—Structure of specially adapted heads
    • G11B5/4923—Structure of specially adapted heads in which zones of the transducing part are being physically controllable
    • G11B5/493—Control of magnetic properties, e.g. saturation, anisotropy
    • G11B5/4938—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films
    • G11B5/4946—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films for formation or displacement of magnetic domains, e.g. walls, bubbles
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)
DE8686402193T 1985-10-04 1986-10-03 Thermomagnetischer aufnahmekopf und herstellungsverfahren. Expired - Fee Related DE3681679D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8514766A FR2588406B1 (fr) 1985-10-04 1985-10-04 Tete d'enregistrement thermomagnetique et procede de realisation

Publications (1)

Publication Number Publication Date
DE3681679D1 true DE3681679D1 (de) 1991-10-31

Family

ID=9323556

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686402193T Expired - Fee Related DE3681679D1 (de) 1985-10-04 1986-10-03 Thermomagnetischer aufnahmekopf und herstellungsverfahren.

Country Status (5)

Country Link
US (1) US4949198A (de)
EP (1) EP0218532B1 (de)
JP (1) JPH0752486B2 (de)
DE (1) DE3681679D1 (de)
FR (1) FR2588406B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2679079B2 (ja) * 1988-02-18 1997-11-19 ソニー株式会社 光磁気記録方法
FR2630852B1 (fr) * 1988-04-27 1994-06-17 Thomson Csf Tete d'enregistrement thermomagnetique
FR2650106B1 (fr) * 1989-07-21 1991-09-20 Thomson Csf Tete magnetique d'enregistrement multipiste a grand contraste de champ
RU2051427C1 (ru) * 1993-11-30 1995-12-27 Роман Игоревич Ениленис Способ записи-считывания информации на магнитном носителе и головка для его осуществления
FR2723242B1 (fr) * 1994-07-26 1996-08-30 Thomson Csf Tete magnetique a element saturable et dispositif matriciel comportant un ensemble de tetes magnetiques
FR2786345B1 (fr) 1998-11-24 2001-02-09 Thomson Csf Dispositif de cryptage quantique
US6532125B1 (en) * 1999-09-30 2003-03-11 International Business Machines Corporation Apparatus and method suitable for magnetic-thermal recording
KR100615731B1 (ko) * 1999-11-12 2006-08-25 시게이트 테크놀로지 엘엘씨 열 유도 상전이를 이용하는 자기 매체 패터닝
US7149173B2 (en) * 2000-10-17 2006-12-12 Thales Medium for recording optically readable data, method for making same and optical system reproducing said data
FR2824905B1 (fr) * 2001-05-15 2003-08-29 Thomson Csf Gyrometre a fibre optique

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB770127A (en) * 1955-05-16 1957-03-13 Simon Levin Improvements in methods and apparatus for recording and reproducing magnetic information
US3438010A (en) * 1957-11-18 1969-04-08 Lab For Electronics Inc High capacity data processing techniques
US3651262A (en) * 1970-06-01 1972-03-21 Zenith Radio Corp Laser system for magnetic recording and playback
US3970803A (en) * 1973-01-11 1976-07-20 Cbs Inc. Printed sound track system
DE2357301C3 (de) * 1973-11-16 1978-09-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung für Licht- und/oder wärmegesteuerte magnetooptische Speicher
JPS54103009A (en) * 1978-01-31 1979-08-14 Ricoh Co Ltd Vertical magnetic head and magnetically writing method using the same
US4144548A (en) * 1978-02-10 1979-03-13 Cubic Western Data Validator for magnetic tickets
JPS54146620A (en) * 1978-05-09 1979-11-16 Matsushita Electric Ind Co Ltd Magnetic record head
JPS5774814A (en) * 1980-10-24 1982-05-11 Seiko Epson Corp Vertical magnetic recording head
JPS57179907A (en) * 1981-04-30 1982-11-05 Canon Inc Vertical magnetic recorder
JPS57200918A (en) * 1981-06-03 1982-12-09 Canon Inc Vertical magnetic recording device
JPS57203207A (en) * 1981-06-09 1982-12-13 Canon Inc Vertical magnetic recorder
US4520409A (en) * 1981-07-10 1985-05-28 Fuji Xerox Corporation, Limited Thermal and magnetic recording head
JPS589176A (ja) * 1981-07-10 1983-01-19 Fuji Xerox Co Ltd 磁気潜像形成装置
JPS5834474A (ja) * 1981-08-25 1983-02-28 Fuji Xerox Co Ltd 熱磁気記録方法
NL8203725A (nl) * 1982-09-27 1984-04-16 Philips Nv Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor.
JPH0614416B2 (ja) * 1983-03-17 1994-02-23 三洋電機株式会社 光磁気記録再生方法
US4610009A (en) * 1983-05-23 1986-09-02 Xerox Corporation Writing, erasing and readout system for a magneto-optic recording medium
US4531137A (en) * 1983-07-20 1985-07-23 Xerox Corporation Thermoremanent magnetic imaging method

Also Published As

Publication number Publication date
JPH0752486B2 (ja) 1995-06-05
US4949198A (en) 1990-08-14
EP0218532A1 (de) 1987-04-15
FR2588406A1 (fr) 1987-04-10
EP0218532B1 (de) 1991-09-25
FR2588406B1 (fr) 1994-03-25
JPS6288158A (ja) 1987-04-22

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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