FR2521759B1 - Tete magnetique et son procede de fabrication - Google Patents

Tete magnetique et son procede de fabrication

Info

Publication number
FR2521759B1
FR2521759B1 FR838302325A FR8302325A FR2521759B1 FR 2521759 B1 FR2521759 B1 FR 2521759B1 FR 838302325 A FR838302325 A FR 838302325A FR 8302325 A FR8302325 A FR 8302325A FR 2521759 B1 FR2521759 B1 FR 2521759B1
Authority
FR
France
Prior art keywords
manufacturing
magnetic head
magnetic
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
Application number
FR838302325A
Other languages
English (en)
Other versions
FR2521759A1 (fr
Inventor
Johannes Petrus Maria Verbunt
Willibrordus Gerardus Mar Hoek
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2521759A1 publication Critical patent/FR2521759A1/fr
Application granted granted Critical
Publication of FR2521759B1 publication Critical patent/FR2521759B1/fr
Expired 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23—Gap features
    • G11B5/232—Manufacture of gap
    • 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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • 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
    • Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
    • Y10T29/49037—Using reference point/surface to facilitate measuring
    • 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)
FR838302325A 1982-02-12 1983-02-14 Tete magnetique et son procede de fabrication Expired FR2521759B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8200531A NL8200531A (nl) 1982-02-12 1982-02-12 Magneetkop met gedeeltelijk uitgeetste wikkelopening.

Publications (2)

Publication Number Publication Date
FR2521759A1 FR2521759A1 (fr) 1983-08-19
FR2521759B1 true FR2521759B1 (fr) 1989-02-03

Family

ID=19839244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR838302325A Expired FR2521759B1 (fr) 1982-02-12 1983-02-14 Tete magnetique et son procede de fabrication

Country Status (7)

Country Link
US (1) US4729161A (fr)
JP (1) JPS58147816A (fr)
KR (1) KR840003880A (fr)
DE (1) DE3304563A1 (fr)
FR (1) FR2521759B1 (fr)
GB (1) GB2115211B (fr)
NL (1) NL8200531A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0740335B2 (ja) * 1983-12-27 1995-05-01 日本碍子株式会社 磁気ヘッド用コアの製造方法
FR2622339A1 (fr) * 1987-10-27 1989-04-28 Europ Composants Electron Procede de detection de fin de polissage d'une tete magnetique couches minces
CA1317672C (fr) * 1988-04-06 1993-05-11 Naoto Matono Marqueur de detection et traitement de tete magnetique a couche mince
US5138508A (en) * 1988-04-12 1992-08-11 Ngk Insulators, Ltd. Magnetic head core
JPH01260611A (ja) * 1988-04-12 1989-10-17 Ngk Insulators Ltd 磁気ヘッド用コアの製造法及びそれによって得られた磁気ヘッド用コア
JPH04301205A (ja) * 1991-03-28 1992-10-23 Ngk Insulators Ltd 磁気ヘッド用コアチップ及びそれを用いた磁気ヘッド用コアスライダの製造法
US5301418A (en) * 1991-04-12 1994-04-12 U.S. Philips Corporation Method of manufacturing a magnetic head
JPH06203317A (ja) * 1992-11-13 1994-07-22 Hitachi Metals Ltd 浮上型複合磁気ヘッド及びその製造方法
US8191234B2 (en) * 2008-08-01 2012-06-05 International Business Machines Corporation Method of manufacturing a magnetic head with reinforcing islands

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL263099A (fr) * 1961-03-30
US3249987A (en) * 1961-03-30 1966-05-10 Philips Corp Method of manufacturing magnetic heads
NL289671A (fr) * 1963-03-01
US3417465A (en) * 1964-05-19 1968-12-24 Minnesota Mining & Mfg Method of making laminated magnetic head
US3751803A (en) * 1972-05-16 1973-08-14 Ferroxcube Corp Method of making a magnetic head
US4045864A (en) * 1975-07-29 1977-09-06 Olympus Optical Co. Ltd. Method of manufacturing magnetic heads
US3982318A (en) * 1976-01-29 1976-09-28 Control Data Corporation Magnetic transducer head core manufacturing method
JPS53115212A (en) * 1977-03-17 1978-10-07 Sanyo Electric Co Ltd Magnetic head and production of the same
DE2715352A1 (de) * 1977-04-06 1978-10-12 Grundig Emv Verfahren zur herstellung einer polschuhplatte fuer einen magnetkopf
DE2721201A1 (de) * 1977-05-11 1978-11-16 Siemens Ag Verfahren zur herstellung integrierter magnetkopfstrukturen
JPS53142214A (en) * 1977-05-18 1978-12-11 Fujitsu Ltd Manufacture of magnetic head
JPS53143210A (en) * 1977-05-18 1978-12-13 Sanyo Electric Co Ltd Production of magnetic head
JPS5458426A (en) * 1977-10-18 1979-05-11 Fujitsu Ltd Production of thin film magnetic head
JPS54114223A (en) * 1978-02-27 1979-09-06 Nippon Telegr & Teleph Corp <Ntt> Production of floating type thin film magnetic head
US4390916A (en) * 1980-11-20 1983-06-28 International Business Machines Corporation Single track magnetic head assembly
US4477968A (en) * 1982-09-30 1984-10-23 Magnetic Peripherals Inc. Method for using a machining sensor

Also Published As

Publication number Publication date
FR2521759A1 (fr) 1983-08-19
KR840003880A (ko) 1984-10-04
NL8200531A (nl) 1983-09-01
US4729161A (en) 1988-03-08
DE3304563A1 (de) 1983-08-25
GB2115211B (en) 1985-07-10
JPS58147816A (ja) 1983-09-02
GB2115211A (en) 1983-09-01
GB8303546D0 (en) 1983-03-16

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Legal Events

Date Code Title Description
ST Notification of lapse