FR1567488A - - Google Patents

Info

Publication number
FR1567488A
FR1567488A FR1567488DA FR1567488A FR 1567488 A FR1567488 A FR 1567488A FR 1567488D A FR1567488D A FR 1567488DA FR 1567488 A FR1567488 A FR 1567488A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1567488A publication Critical patent/FR1567488A/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
    • 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
    • G11B5/1335—Assembling or shaping of elements
    • 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
    • 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
    • Y10T29/49039—Fabricating head structure or component thereof including measuring or testing with dual gap materials
    • 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
    • Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
    • Y10T29/49057—Using glass bonding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
FR1567488D 1967-05-23 1968-05-22 Expired FR1567488A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64144367A 1967-05-23 1967-05-23

Publications (1)

Publication Number Publication Date
FR1567488A true FR1567488A (fr) 1969-05-16

Family

ID=24572404

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1567488D Expired FR1567488A (fr) 1967-05-23 1968-05-22

Country Status (7)

Country Link
US (1) US3479738A (fr)
AT (1) AT295878B (fr)
CH (1) CH491461A (fr)
DE (1) DE1774321C3 (fr)
FR (1) FR1567488A (fr)
GB (1) GB1226598A (fr)
NL (1) NL6807257A (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1799008B1 (de) * 1967-02-14 1976-12-16 Matsushita Electric Ind Co Ltd Gesintertes ferrit und verfahren zu seiner herstellung
US3634933A (en) * 1968-05-01 1972-01-18 Rca Corp Magnetic head method
US3639701A (en) * 1970-07-02 1972-02-01 Ibm Magnetic recording head having a nonmagnetic ferrite gap
US3706132A (en) * 1970-11-19 1972-12-19 Rca Corp Magnetic transducer fabrication technique
US3810245A (en) * 1971-06-28 1974-05-07 Sony Corp Single crystal ferrite magnetic head
JPS5534485B2 (fr) * 1972-01-31 1980-09-06
US3778896A (en) * 1972-05-05 1973-12-18 Bell & Howell Co Bonding an insulator to an inorganic member
US3886025A (en) * 1972-08-24 1975-05-27 Ibm Ferrite head
US3940798A (en) * 1974-09-30 1976-02-24 Rumpler Allen G Core structure with L-shaped back member and magnetic bonding material
JPS5312740A (en) * 1976-07-23 1978-02-04 Matsushita Electric Ind Co Ltd Liquid for electrolytically etching ferrite
JPS5827565B2 (ja) * 1977-09-19 1983-06-10 松下電器産業株式会社 磁気ヘッドおよびその製造方法
US4298899A (en) * 1979-12-17 1981-11-03 International Business Machines Corporation Magnetic head assembly with ferrite core
JPS60138708A (ja) * 1983-12-27 1985-07-23 Ngk Insulators Ltd 磁気ヘッド用コアの製造法
JPS61133007A (ja) * 1984-12-01 1986-06-20 Victor Co Of Japan Ltd 磁気ヘツド
US4799119A (en) * 1986-09-10 1989-01-17 International Business Machines Corporation Flexible circuit magnetic core winding for a core member
JPS63211110A (ja) * 1987-02-27 1988-09-02 Pioneer Electronic Corp 磁気ヘツドの製造方法
JPS63257904A (ja) * 1987-04-15 1988-10-25 Pioneer Electronic Corp 磁気ヘツドの製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094772A (en) * 1956-07-26 1963-06-25 Philips Corp Method of producing magnetic heads with accurately predetermined gap heights
US3098126A (en) * 1960-01-11 1963-07-16 Minnesota Mining & Mfg Magnetic transducer device
US3239322A (en) * 1961-05-24 1966-03-08 Gen Electric Process for sealing vacuum-tight spinel bodies
US3325266A (en) * 1966-04-14 1967-06-13 Corning Glass Works Method of producing composite semicrystalline articles

Also Published As

Publication number Publication date
NL6807257A (fr) 1968-11-25
GB1226598A (fr) 1971-03-31
US3479738A (en) 1969-11-25
AT295878B (de) 1972-01-25
DE1774321C3 (de) 1975-02-20
DE1774321A1 (de) 1972-01-27
CH491461A (de) 1970-05-31
DE1774321B2 (de) 1974-05-30

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Legal Events

Date Code Title Description
ST Notification of lapse