DE3812657A1 - Verfahren zur herstellung von magnetkoepfen - Google Patents

Verfahren zur herstellung von magnetkoepfen

Info

Publication number
DE3812657A1
DE3812657A1 DE3812657A DE3812657A DE3812657A1 DE 3812657 A1 DE3812657 A1 DE 3812657A1 DE 3812657 A DE3812657 A DE 3812657A DE 3812657 A DE3812657 A DE 3812657A DE 3812657 A1 DE3812657 A1 DE 3812657A1
Authority
DE
Germany
Prior art keywords
magnetic material
core
track width
thin film
magnetic
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.)
Granted
Application number
DE3812657A
Other languages
German (de)
English (en)
Other versions
DE3812657C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Hiroyuki Ota
Kazuhiko Sato
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of DE3812657A1 publication Critical patent/DE3812657A1/de
Application granted granted Critical
Publication of DE3812657C2 publication Critical patent/DE3812657C2/de
Granted 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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • G11B5/1872—Shaping or contouring of the transducing or guiding surface for improving the form of the electrical signal transduced, e.g. compensation of "contour effect"
    • G11B5/1874—Shaping or contouring of the transducing or guiding surface for improving the form of the electrical signal transduced, e.g. compensation of "contour effect" specially adapted for composite pole pieces, e.g. for avoiding "pseudo-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
    • G11B5/1875—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers
    • G11B5/1877—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film
    • G11B5/1878—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film disposed immediately adjacent to the transducing gap, e.g. "Metal-In-Gap" structure
    • 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
    • Y10T29/49043—Depositing magnetic layer or coating
    • 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
    • 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
    • Y10T29/49067—Specified diverse magnetic materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE3812657A 1987-04-15 1988-04-15 Verfahren zur herstellung von magnetkoepfen Granted DE3812657A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62090726A JPS63257904A (ja) 1987-04-15 1987-04-15 磁気ヘツドの製造方法

Publications (2)

Publication Number Publication Date
DE3812657A1 true DE3812657A1 (de) 1988-11-03
DE3812657C2 DE3812657C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-03-14

Family

ID=14006558

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3812657A Granted DE3812657A1 (de) 1987-04-15 1988-04-15 Verfahren zur herstellung von magnetkoepfen

Country Status (4)

Country Link
US (1) US4815197A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS63257904A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3812657A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2204439B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0778853B2 (ja) * 1988-05-06 1995-08-23 三洋電機株式会社 浮動型磁気ヘツド及びその製造方法
JP2600841B2 (ja) * 1988-09-02 1997-04-16 三菱電機株式会社 磁気ヘッド
JPH0624045B2 (ja) * 1989-10-03 1994-03-30 日本碍子株式会社 複合型磁気ヘッド用コアの製造方法
JP2760137B2 (ja) * 1990-05-31 1998-05-28 ソニー株式会社 磁気ヘッドの製造方法
JPH08115507A (ja) * 1994-08-22 1996-05-07 Sony Corp 磁気ヘッド
US5710673A (en) * 1996-06-07 1998-01-20 Ampex Corporation Azimuth record head for minimizing and equalizing crosstalk between tracks of opposite azimuths
US6288870B1 (en) 1998-01-13 2001-09-11 Quantum Corporation Self-aligned metal film core multi-channel recording head for tape drives
JP2003272111A (ja) * 2002-03-18 2003-09-26 Fujitsu Ltd 記録用磁気ヘッド及び磁気記憶装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128625A1 (en) * 1983-06-13 1984-12-19 Koninklijke Philips Electronics N.V. Magnetic transducing head for writing information on high-coercive recording media
DE3541762A1 (de) * 1984-11-26 1986-05-28 Sony Corp., Tokio/Tokyo Magnetischer wandlerkopf und verfahren zu seiner herstellung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479738A (en) * 1967-05-23 1969-11-25 Rca Corp Magnetic heads
KR910000790B1 (ko) * 1985-04-30 1991-02-08 마쯔시다덴기산교 가부시기가이샤 자기헤드 및 그 제조방법
EP0223933B1 (de) * 1985-11-29 1992-12-02 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Verfahren zur Herstellung von Magnetköpfen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128625A1 (en) * 1983-06-13 1984-12-19 Koninklijke Philips Electronics N.V. Magnetic transducing head for writing information on high-coercive recording media
DE3541762A1 (de) * 1984-11-26 1986-05-28 Sony Corp., Tokio/Tokyo Magnetischer wandlerkopf und verfahren zu seiner herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
US-Z: KOBAYASHI, T: A Tilted Sendust Sputtered Ferrite Video Head. In: IEEE Transactions on Magnetics, Vol.MAG-21, No.5, Sept.85 *

Also Published As

Publication number Publication date
US4815197A (en) 1989-03-28
GB2204439B (en) 1991-01-02
DE3812657C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-03-14
GB2204439A (en) 1988-11-09
GB8808941D0 (en) 1988-05-18
JPS63257904A (ja) 1988-10-25

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
D2 Grant after examination
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee