GB1358084A - Multi-gap magnetic transducers and methods of making them - Google Patents

Multi-gap magnetic transducers and methods of making them

Info

Publication number
GB1358084A
GB1358084A GB5153371A GB5153371A GB1358084A GB 1358084 A GB1358084 A GB 1358084A GB 5153371 A GB5153371 A GB 5153371A GB 5153371 A GB5153371 A GB 5153371A GB 1358084 A GB1358084 A GB 1358084A
Authority
GB
United Kingdom
Prior art keywords
magnetic
circuit
winding
carries
gap
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
GB5153371A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1358084A publication Critical patent/GB1358084A/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
    • G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
    • 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
    • G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • 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
    • Y10T29/49041—Fabricating head structure or component thereof including measuring or testing with significant slider/housing shaping or treating
    • 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
    • Y10T29/49059—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic with work positioning means
    • 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
    • Y10T29/4906—Providing winding
    • Y10T29/49066—Preformed winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Regulation Of General Use Transformers (AREA)
GB5153371A 1970-12-11 1970-12-11 Multi-gap magnetic transducers and methods of making them Expired GB1358084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9720870A 1970-12-11 1970-12-11

Publications (1)

Publication Number Publication Date
GB1358084A true GB1358084A (en) 1974-06-26

Family

ID=22262068

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5153371A Expired GB1358084A (en) 1970-12-11 1970-12-11 Multi-gap magnetic transducers and methods of making them

Country Status (4)

Country Link
US (1) US3718776A (enExample)
DE (1) DE2160970A1 (enExample)
FR (1) FR2117058A5 (enExample)
GB (1) GB1358084A (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719527A (en) * 1984-10-31 1988-01-12 Sanyo Electric Co., Ltd. Composite magnetic head having accurately aligned gaps
ATE51315T1 (de) * 1985-09-26 1990-04-15 Siemens Ag Kombinierter schreib/lesekopf fuer magnetschichtspeicher und verfahren zu seiner herstellung.
JPH0654528B2 (ja) * 1986-04-23 1994-07-20 株式会社日立製作所 磁気ヘツド
US4979051A (en) * 1988-03-22 1990-12-18 Eggebeen James A Bimodal multi-track magnetic head
US4975791A (en) * 1988-03-22 1990-12-04 Carlisle Memory Products Group Incorporated Recording system having head transducers with controlled skew
EP0829853A3 (en) * 1991-06-07 1998-05-13 Minnesota Mining And Manufacturing Company Multi-track servo recording system
US5229895A (en) * 1991-06-07 1993-07-20 Minnesota Mining And Manufacturing Company Multi-track servo recording head assembly
DE10134056B8 (de) * 2001-07-13 2014-05-28 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von nanokristallinen Magnetkernen sowie Vorrichtung zur Durchführung des Verfahrens
US7265942B2 (en) * 2004-03-30 2007-09-04 Hitachi Global Storage Technologies Netherlands, B.V. Inductive magnetic head with non-magnetic seed layer gap structure and method for the fabrication thereof
DE102005034486A1 (de) * 2005-07-20 2007-02-01 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung eines weichmagnetischen Kerns für Generatoren sowie Generator mit einem derartigen Kern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344237A (en) * 1967-09-26 Desposited film transducing apparatus and method op producing the apparatus
US2852617A (en) * 1955-01-14 1958-09-16 Zeiss Ikon Ag Magnet head
NL145079B (nl) * 1964-02-25 1975-02-17 Philips Nv Inrichting voor het verminderen, c.q. opheffen van overspraak bij een dubbelspleetsmagneetkop.
US3633274A (en) * 1966-07-13 1972-01-11 Ncr Co Method of making magnetic head device
US3577191A (en) * 1968-08-05 1971-05-04 Ibm Magnetic head assembly with sidebar

Also Published As

Publication number Publication date
DE2160970A1 (de) 1972-06-29
FR2117058A5 (enExample) 1972-07-21
US3718776A (en) 1973-02-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees