CA1048759A - Magnetic transducer head core manufacturing method - Google Patents

Magnetic transducer head core manufacturing method

Info

Publication number
CA1048759A
CA1048759A CA77269694A CA269694A CA1048759A CA 1048759 A CA1048759 A CA 1048759A CA 77269694 A CA77269694 A CA 77269694A CA 269694 A CA269694 A CA 269694A CA 1048759 A CA1048759 A CA 1048759A
Authority
CA
Canada
Prior art keywords
flux gap
notch
transducing
flux
depth
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
CA77269694A
Other languages
English (en)
French (fr)
Inventor
Douglas J. Hennenfent
Allan L. Holmstrand
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.)
Control Data Corp
Original Assignee
Control Data Corp
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 Control Data Corp filed Critical Control Data Corp
Application granted granted Critical
Publication of CA1048759A publication Critical patent/CA1048759A/en
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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles
    • 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
    • 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
    • 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]
    • 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)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
CA77269694A 1976-01-29 1977-01-13 Magnetic transducer head core manufacturing method Expired CA1048759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/653,578 US3982318A (en) 1976-01-29 1976-01-29 Magnetic transducer head core manufacturing method

Publications (1)

Publication Number Publication Date
CA1048759A true CA1048759A (en) 1979-02-20

Family

ID=24621459

Family Applications (1)

Application Number Title Priority Date Filing Date
CA77269694A Expired CA1048759A (en) 1976-01-29 1977-01-13 Magnetic transducer head core manufacturing method

Country Status (8)

Country Link
US (1) US3982318A (OSRAM)
JP (1) JPS5294115A (OSRAM)
AU (1) AU500484B2 (OSRAM)
CA (1) CA1048759A (OSRAM)
DE (1) DE2701865C2 (OSRAM)
FR (1) FR2339927A1 (OSRAM)
GB (1) GB1518917A (OSRAM)
NL (1) NL184548C (OSRAM)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217613A (en) * 1978-11-06 1980-08-12 Rca Corporation Magnetic transducer head core
NL8200531A (nl) * 1982-02-12 1983-09-01 Philips Nv Magneetkop met gedeeltelijk uitgeetste wikkelopening.
DE3333369A1 (de) * 1982-09-30 1984-04-05 Magnetic Peripherals Inc., Minneapolis, Minn. Verfahren zum eichen eines bearbeitungsfuehlers
US4477968A (en) * 1982-09-30 1984-10-23 Magnetic Peripherals Inc. Method for using a machining sensor
US5124865A (en) * 1988-03-31 1992-06-23 Applied Magnetics Corporation Microminimonolithic magnetic head slider having vertically extending slots to reduce flux leakage losses
US5081553A (en) * 1988-03-31 1992-01-14 Applied Magnetics Corporation Combination of elongated load arm and microminimonolithic head slider
JPH073739B2 (ja) * 1988-04-19 1995-01-18 株式会社日立製作所 磁気ヘッド組立体
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

Family Cites Families (6)

* 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
DE1120728B (de) * 1960-01-09 1961-12-28 Grundig Max Verfahren zur Herstellung eines Magnetkopfes
NL263324A (OSRAM) * 1961-04-07
US3412217A (en) * 1965-01-27 1968-11-19 Bygdnes Perry Alan Recorder head with electrically conductive filler wedge
DE1524742B2 (de) * 1967-01-28 1973-06-14 Verfahren zur herstellung von magnetkoepfen
US3810245A (en) * 1971-06-28 1974-05-07 Sony Corp Single crystal ferrite magnetic head

Also Published As

Publication number Publication date
AU500484B2 (en) 1979-05-24
FR2339927B1 (OSRAM) 1983-11-10
NL7700817A (nl) 1977-08-02
JPS5294115A (en) 1977-08-08
US3982318B1 (OSRAM) 1992-02-04
NL184548C (nl) 1989-08-16
GB1518917A (en) 1978-07-26
NL184548B (nl) 1989-03-16
FR2339927A1 (fr) 1977-08-26
AU2158777A (en) 1978-08-03
DE2701865C2 (de) 1987-04-16
US3982318A (en) 1976-09-28
DE2701865A1 (de) 1977-08-04

Similar Documents

Publication Publication Date Title
US4921508A (en) Method of manufacturing magnetic head
US3982318A (en) Magnetic transducer head core manufacturing method
US4658314A (en) Floating type magnetic head
JPH04259902A (ja) 磁気ディスク装置用コアスライダ及びその製造方法
US5146378A (en) Multi-track head
US5305559A (en) Method of grinding core blank for magnetic heads, using markers for determining grinding depth for nominal magnetic gap depth
US4682256A (en) Method of manufacturing a composite type magnetic head
GB2115211A (en) Magnetic head and method of manufacturing a magnetic head
JP3083675B2 (ja) 磁気ヘッドの製造方法
EP0137922B1 (en) Magnetic head assembly
EP0108152B1 (en) Narrow-track composite digital magnetic head
US5267107A (en) Laminated magnetic transducer
JPS61283012A (ja) 磁気ヘツド
JPS6111911A (ja) 磁気ヘツド装置
JPH04301205A (ja) 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
US5627700A (en) Floating type magnetic head having flush rear reference surface
US5576913A (en) Magnetic head for hard disk having reading core and trailing core
JP2986842B2 (ja) 磁気ヘッドの製造方法
JPS6249652B2 (OSRAM)
JPS62262209A (ja) 磁気ヘツド
JPS60247814A (ja) 多トラツク薄膜磁気ヘツド
JPH053646B2 (OSRAM)
JPS62229508A (ja) 磁気ヘツドおよびその製造方法
JPS63152003A (ja) 磁気ヘツドの製造方法
JPH0883416A (ja) 固定磁気ディスク装置用コアスライダの製造方法