GB1321133A - Electromagnetic transducer head and method for manufacturing such a head - Google Patents

Electromagnetic transducer head and method for manufacturing such a head

Info

Publication number
GB1321133A
GB1321133A GB1780771A GB1780771A GB1321133A GB 1321133 A GB1321133 A GB 1321133A GB 1780771 A GB1780771 A GB 1780771A GB 1780771 A GB1780771 A GB 1780771A GB 1321133 A GB1321133 A GB 1321133A
Authority
GB
United Kingdom
Prior art keywords
layer
magnetic
head
terminal
layers
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
GB1780771A
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 GB1321133A publication Critical patent/GB1321133A/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
    • G11B5/17—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
    • 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
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • 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
    • Y10T29/49043—Depositing magnetic layer or coating
    • Y10T29/49044—Plural magnetic deposition layers
    • 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
    • Y10T29/49064—Providing winding by coating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

1321133 Magnetic heads INTERNATIONAL BUSINESS MACHINES CORP 28 May 1971 [30 June 1970] 17807/71 Heading G5R A magnetic head comprises an elongated first layer 11 of magnetic material, a second layer 12 of magnetic material magnetically joined at 38 to one end 34 of the first layer and overlapping the other end 23 of the first layer to form a non-magnetic gap 14 therebetween, and electrical windings 30, 42 and 31, 43 extending around the first magnetic layer 11. As shown, the non-magnetic gap 14 is provided by a layer 17 of electrically conductive material to which the windings are connected so that return current is conducted through the legs 21, 22 of the core formed by the magnetic layers 11, 12 to a terminal 37, the other terminal being provided by a conductive layer 29. The head is built up by successive depositions, maskings and etchings of layers of permalloy, insulator and conductor (e.g. copper), using photolithographic, vacuum and thin film techniques.
GB1780771A 1970-06-30 1971-05-28 Electromagnetic transducer head and method for manufacturing such a head Expired GB1321133A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5118670A 1970-06-30 1970-06-30

Publications (1)

Publication Number Publication Date
GB1321133A true GB1321133A (en) 1973-06-20

Family

ID=21969839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1780771A Expired GB1321133A (en) 1970-06-30 1971-05-28 Electromagnetic transducer head and method for manufacturing such a head

Country Status (6)

Country Link
US (1) US3662119A (en)
JP (1) JPS5123169B1 (en)
CA (1) CA936956A (en)
DE (1) DE2132042A1 (en)
FR (1) FR2099919A5 (en)
GB (1) GB1321133A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1349061A (en) * 1970-11-07 1974-03-27 Int Computers Ltd Strip magnetic heads transducer arrangements
US3986210A (en) * 1973-02-20 1976-10-12 Matsushita Electric Industrial Co., Ltd. Magnetic head device using printed circuit techniques
DE2721452A1 (en) * 1977-05-12 1978-11-16 Siemens Ag INTEGRATED MAGNETIC HEAD STRUCTURE AND METHOD FOR MANUFACTURING IT
JPS57123516A (en) * 1981-01-23 1982-08-02 Matsushita Electric Ind Co Ltd Thin-film magnetic head
JPH0664709B2 (en) * 1984-01-26 1994-08-22 キヤノン株式会社 Thin film magnetic head
NL8501144A (en) * 1985-04-19 1986-11-17 Philips Nv MAGNETIC TRANSFER HEAD.
US4972287A (en) * 1987-07-01 1990-11-20 Digital Equipment Corp. Having a solenoidal energizing coil
US4985985A (en) * 1987-07-01 1991-01-22 Digital Equipment Corporation Solenoidal thin film read/write head for computer mass storage device and method of making same
US5059278A (en) * 1990-09-28 1991-10-22 Seagate Technology Selective chemical removal of coil seed-layer in thin film head magnetic transducer
US5452165A (en) * 1994-03-16 1995-09-19 International Business Machines Corporation Close packed magnetic head linear array
FR2726931B1 (en) * 1994-11-16 1996-12-06 Commissariat Energie Atomique VERTICAL MAGNETIC HEAD WITH INTEGRATED WINDING AND ITS MANUFACTURING METHOD
US5621594A (en) * 1995-02-17 1997-04-15 Aiwa Research And Development, Inc. Electroplated thin film conductor coil assembly
US5703740A (en) * 1995-08-24 1997-12-30 Velocidata, Inc. Toroidal thin film head
US6195232B1 (en) 1995-08-24 2001-02-27 Torohead, Inc. Low-noise toroidal thin film head with solenoidal coil
US6122149A (en) * 1997-06-24 2000-09-19 Seagate Technology, Inc. Magnetic microactuator and inductive sensor having shaped pole configuration
US6275354B1 (en) * 1998-01-21 2001-08-14 Read-Rite Corporation Magnetic head with a toroidal coil encompassing only one yoke layer
FR2774797B1 (en) * 1998-02-11 2000-03-10 Commissariat Energie Atomique PROCESS FOR PRODUCING AN ASSEMBLY WITH MULTIPLE MAGNETIC HEADS AND MULTIPLE HEAD ASSEMBLY OBTAINED BY THIS PROCESS
US6819527B1 (en) * 2000-03-23 2004-11-16 Hitachi Global Storage Technologies, Inc. Magnetic head with lower coil traces connected to integrally formed vertical interconnects and upper coil traces through plural insulating layer arrangement
US20040085684A1 (en) * 2002-11-05 2004-05-06 Basra Vijay K. Magnetic read/write head
US7978429B2 (en) * 2006-09-19 2011-07-12 International Business Machines Corporation Low track pitch write module and bidirectional tape head
US20080068752A1 (en) * 2006-09-19 2008-03-20 International Business Machines Corporation Planar Bidirectional Tape Head With Planar Read And Write Elements
US20080068750A1 (en) * 2006-09-19 2008-03-20 International Business Machines Corporation Planar Write Module And Hybrid Planar Write-Vertical Read Bidirectional Tape Head

Family Cites Families (7)

* 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
US2978545A (en) * 1956-10-15 1961-04-04 Mc Graw Edison Co Magnetic playback heads
US2933721A (en) * 1957-05-22 1960-04-19 Ibm Gated magnetic recording head
DE1541822B2 (en) * 1966-08-18 1970-09-17 Siemens AG, 1000 Berlin u. 8000 München Coil oscillator for light beam oscillographs
US3480935A (en) * 1966-09-07 1969-11-25 Honeywell Inc Electromagnetic transducer having a variable gap width for recording and checking said recording
FR1524322A (en) * 1967-03-30 1968-05-10 Radiotechnique Coprim Rtc Process for manufacturing inductance, in particular for integrated circuits, and inductance obtained
US3549825A (en) * 1967-09-18 1970-12-22 Ncr Co Magnetic transducer with planar spiral coil extending into the gap

Also Published As

Publication number Publication date
DE2132042A1 (en) 1972-01-05
JPS5123169B1 (en) 1976-07-15
FR2099919A5 (en) 1972-03-17
US3662119A (en) 1972-05-09
CA936956A (en) 1973-11-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee