WO1992002015A3 - Procede de realisation de tetes d'ecriture et/ou lecture pour enregistrement magnetique - Google Patents

Procede de realisation de tetes d'ecriture et/ou lecture pour enregistrement magnetique Download PDF

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Publication number
WO1992002015A3
WO1992002015A3 PCT/FR1991/000557 FR9100557W WO9202015A3 WO 1992002015 A3 WO1992002015 A3 WO 1992002015A3 FR 9100557 W FR9100557 W FR 9100557W WO 9202015 A3 WO9202015 A3 WO 9202015A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic recording
read heads
producing write
gap
substrate
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.)
Ceased
Application number
PCT/FR1991/000557
Other languages
English (en)
Other versions
WO1992002015A2 (fr
Inventor
Pierre Gaud
Henri Sibuet
Alain Persico
Rochaz Line Vieux
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to DE69119045T priority Critical patent/DE69119045T2/de
Priority to EP91913027A priority patent/EP0491920B1/fr
Publication of WO1992002015A2 publication Critical patent/WO1992002015A2/fr
Publication of WO1992002015A3 publication Critical patent/WO1992002015A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G11B5/17—Construction or disposition of windings
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
    • G11B5/3166—Testing or indicating in relation thereto, e.g. before the fabrication is completed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • Y10T29/49052—Machining magnetic material [e.g., grinding, etching, polishing] by etching

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Facsimiles In General (AREA)

Abstract

Pour réaliser la tête magnétique, on utilise un substrat monocristallin (16) que l'on soumet à une gravure anisotrope selon un plan cristallographique pour donner à l'entrefer (48) sa direction précise (droite ou inclinée). Le substrat est soumis par ailleurs à une oxydation thermique pour donner à l'entrefer une épaisseur donnée. Application notamment aux têtes pour enregistrement vidéo.
PCT/FR1991/000557 1990-07-11 1991-07-10 Procede de realisation de tetes d'ecriture et/ou lecture pour enregistrement magnetique Ceased WO1992002015A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69119045T DE69119045T2 (de) 1990-07-11 1991-07-10 Verfahren zur herstellung von aufnahme- und/oder wiedergabeköpfen für magnetische aufnahme
EP91913027A EP0491920B1 (fr) 1990-07-11 1991-07-10 Procede de realisation de tetes d'ecriture et/ou lecture pour enregistrement magnetique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR90/08826 1990-07-11
FR9008826A FR2664729B1 (fr) 1990-07-11 1990-07-11 Procede de fabrication de tete magnetique possedant un entrefer presentant un azimut controlable.

Publications (2)

Publication Number Publication Date
WO1992002015A2 WO1992002015A2 (fr) 1992-02-06
WO1992002015A3 true WO1992002015A3 (fr) 1992-03-19

Family

ID=9398597

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1991/000557 Ceased WO1992002015A2 (fr) 1990-07-11 1991-07-10 Procede de realisation de tetes d'ecriture et/ou lecture pour enregistrement magnetique

Country Status (6)

Country Link
US (1) US5250150A (fr)
EP (1) EP0491920B1 (fr)
JP (1) JP2961667B2 (fr)
DE (1) DE69119045T2 (fr)
FR (1) FR2664729B1 (fr)
WO (1) WO1992002015A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645774A (en) * 1989-09-19 1997-07-08 Ferronics Incorporated Method for establishing a target magnetic permeability in a ferrite
US5301418A (en) * 1991-04-12 1994-04-12 U.S. Philips Corporation Method of manufacturing a magnetic head
FR2716996B1 (fr) * 1994-03-07 1996-04-05 Commissariat Energie Atomique Tête magnétique verticale et son procédé de réalisation.
JPH10340426A (ja) * 1997-06-04 1998-12-22 Fujitsu Ltd 薄膜磁気ヘッドおよびその製造方法
FR2781917B1 (fr) * 1998-07-28 2000-09-08 Commissariat Energie Atomique Procede de realisation collective de tetes magnetiques integrees a surface portante de hauteur determinee
US6615496B1 (en) * 2000-05-04 2003-09-09 Sandia Corporation Micromachined cutting blade formed from {211}-oriented silicon
US6651313B1 (en) * 2000-10-06 2003-11-25 International Business Machines Corporation Method for manufacturing a magnetic head
US6808741B1 (en) * 2001-10-26 2004-10-26 Seagate Technology Llc In-line, pass-by method for vapor lubrication
FR2834375B1 (fr) * 2001-12-28 2005-05-20 Commissariat Energie Atomique Tete magnetique integree pour l'enregistrement magnetique et procede de fabrication de cette tete magnetique
FR2877484A1 (fr) * 2004-11-04 2006-05-05 Commissariat Energie Atomique Dispositif d'enregistrement et/ou de lecture a tetes magnetiques multiples a entrefers azimutes
US7444740B1 (en) 2005-01-31 2008-11-04 Western Digital (Fremont), Llc Damascene process for fabricating poles in recording heads
JP2006217281A (ja) * 2005-02-03 2006-08-17 Toshiba Corp 薄膜バルク音響装置の製造方法
US8015692B1 (en) 2007-11-07 2011-09-13 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032230A2 (fr) * 1980-01-14 1981-07-22 Siemens Aktiengesellschaft Transducteur magnétique intégré et procédé pour sa fabrication
EP0262028A1 (fr) * 1986-09-17 1988-03-30 Commissariat A L'energie Atomique Procédé de réalisation de têtes magnétiques en couches minces et à structure planaire et tête obtenue par ce procédé

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6297118A (ja) * 1985-10-23 1987-05-06 Hitachi Ltd 薄膜磁気ヘツド
JPS6488909A (en) * 1987-09-30 1989-04-03 Toshiba Corp Thin film magnetic head and its manufacture
JPH0770384B2 (ja) * 1988-03-29 1995-07-31 日本碍子株式会社 Ｍｎ−Ｚｎフェライトの加工方法
JP2596070B2 (ja) * 1988-06-30 1997-04-02 ソニー株式会社 磁気ヘッドの製造方法
JPH0730465B2 (ja) * 1989-01-09 1995-04-05 日本碍子株式会社 負圧形磁気ヘッドスライダ及びその製造方法
FR2661030B1 (fr) * 1990-04-13 1995-04-07 Thomson Csf Tete magnetique d'enregistrement/lecture et procedes de realisation.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032230A2 (fr) * 1980-01-14 1981-07-22 Siemens Aktiengesellschaft Transducteur magnétique intégré et procédé pour sa fabrication
EP0262028A1 (fr) * 1986-09-17 1988-03-30 Commissariat A L'energie Atomique Procédé de réalisation de têtes magnétiques en couches minces et à structure planaire et tête obtenue par ce procédé

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 21, no. 12, mai 1979, page 5002, Armonk, US, K.E. PETERSEN: "Thin Film Magnetic Heads", voir le document en entier *
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 305 (P-623)(2752), 6 octobre 1987; & JP - A - 6297118 (HITACHI LTD.) 6 mai 1987, voir le document en entier *
PATENT ABSTRACTS OF JAPAN, vol. 13, no. 322 (P-902)(3670), 20 JUILLET 1989; & JP - A - 1088909 )TOSHIBA CORPORATION) 3 avril 1989, voir le document en entier *
PATENT ABSTRACTS OF JAPAN, vol. 14, no. 158 (P-1027)(4101), 27 mars 1990; & JP - A - 2014411 (SONY CORPORATION) 18 janvier 1990, voir le document en entier *

Also Published As

Publication number Publication date
JPH05501781A (ja) 1993-04-02
EP0491920B1 (fr) 1996-04-24
DE69119045T2 (de) 1996-11-07
FR2664729B1 (fr) 1992-09-18
US5250150A (en) 1993-10-05
EP0491920A1 (fr) 1992-07-01
JP2961667B2 (ja) 1999-10-12
DE69119045D1 (de) 1996-05-30
WO1992002015A2 (fr) 1992-02-06
FR2664729A1 (fr) 1992-01-17

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