DE3877350D1 - Laminierter metal-in-gap-magnetkopf fuer videorecorder. - Google Patents

Laminierter metal-in-gap-magnetkopf fuer videorecorder.

Info

Publication number
DE3877350D1
DE3877350D1 DE8989900485T DE3877350T DE3877350D1 DE 3877350 D1 DE3877350 D1 DE 3877350D1 DE 8989900485 T DE8989900485 T DE 8989900485T DE 3877350 T DE3877350 T DE 3877350T DE 3877350 D1 DE3877350 D1 DE 3877350D1
Authority
DE
Germany
Prior art keywords
magnetic head
video recorder
laminated metal
gap magnetic
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 - Fee Related
Application number
DE8989900485T
Other languages
English (en)
Other versions
DE3877350T2 (de
Inventor
K Pisharody
H Ohe
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of DE3877350D1 publication Critical patent/DE3877350D1/de
Application granted granted Critical
Publication of DE3877350T2 publication Critical patent/DE3877350T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/23—Gap features
    • G11B5/235—Selection of material for gap filler
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE8989900485T 1987-11-19 1988-11-09 Laminierter metal-in-gap-magnetkopf fuer videorecorder. Expired - Fee Related DE3877350T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/122,972 US4780779A (en) 1987-11-19 1987-11-19 Laminated sendust metal-in-gap video head
PCT/US1988/004009 WO1989005027A1 (en) 1987-11-19 1988-11-09 Laminated sendust metal-in-gap video head

Publications (2)

Publication Number Publication Date
DE3877350D1 true DE3877350D1 (de) 1993-02-18
DE3877350T2 DE3877350T2 (de) 1993-05-06

Family

ID=22405985

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989900485T Expired - Fee Related DE3877350T2 (de) 1987-11-19 1988-11-09 Laminierter metal-in-gap-magnetkopf fuer videorecorder.

Country Status (6)

Country Link
US (1) US4780779A (de)
EP (1) EP0342227B1 (de)
JP (1) JPH02502232A (de)
KR (1) KR890702184A (de)
DE (1) DE3877350T2 (de)
WO (1) WO1989005027A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6482310A (en) * 1987-09-24 1989-03-28 Sumitomo Spec Metals Composite type magnetic head
JPH0778858B2 (ja) * 1988-10-04 1995-08-23 富士写真フイルム株式会社 薄膜磁気ヘッド
FR2639137B1 (fr) * 1988-11-15 1990-12-21 Thomson Csf Tete magnetique a entrefer saturable et dispositif matriciel comportant un ensemble de telles tetes
JPH02146103A (ja) * 1988-11-28 1990-06-05 Mitsumi Electric Co Ltd 複合磁気ヘッド及びその製造方法
US5001589A (en) * 1989-05-31 1991-03-19 Seagate Technology, Inc. Tungsten and tantalum diffusion barriers for Metal-In-Gap magnetic heads
JPH0383213A (ja) * 1989-08-24 1991-04-09 Matsushita Electric Ind Co Ltd 薄膜磁気ヘッド
JPH046603A (ja) * 1990-04-23 1992-01-10 Alps Electric Co Ltd 磁気ヘッド
US5157570A (en) * 1990-06-29 1992-10-20 Digital Equipment Corporation Magnetic pole configuration for high density thin film recording head
JP2947621B2 (ja) * 1990-12-28 1999-09-13 アルプス電気株式会社 薄膜磁気ヘッド
NL9100192A (nl) * 1991-02-04 1992-09-01 Philips Nv Magneetkop.
US5267392A (en) * 1992-03-04 1993-12-07 Ampex Systems Corporation Method of manufacturing a laminated high frequency magnetic transducer
WO1994002938A1 (en) * 1992-07-17 1994-02-03 Ampex Systems Corporation Composite metal and ferrite head transducer and manufacturing method therefor
DE69321930T2 (de) * 1993-01-15 1999-07-01 Ibm Geschichtete magnetische Struktur zum Gebrauch in einem Magnetkopf
EP0768640A3 (de) * 1995-10-13 1998-11-11 Ampex Corporation Magnetkopf mit kleinem Kern und nicht magnetischem Seitenträger
KR19990061739A (ko) * 1997-12-31 1999-07-26 윤종용 리드/라이트 성능이 향상된 박막 인덕티브 헤드
US6833976B2 (en) * 2002-05-15 2004-12-21 International Business Machine Corporation Thin film magnetic recording inductive write head with laminated write gap
US7525760B2 (en) * 2005-04-11 2009-04-28 Hitachi Global Storage Technologies B.V. Laminated write gap to improve writer performance
US7500302B2 (en) * 2005-04-11 2009-03-10 Hitachi Global Storage Technologies, Netherlands B.V. Process for fabricating a magnetic recording head with a laminated write gap

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0770020B2 (ja) * 1985-06-14 1995-07-31 株式会社日立製作所 磁気ヘツド
EP0246706B1 (de) * 1986-05-21 1991-05-08 Koninklijke Philips Electronics N.V. Magnetkopf mit gekleideten Kernflächen

Also Published As

Publication number Publication date
US4780779A (en) 1988-10-25
JPH02502232A (ja) 1990-07-19
EP0342227B1 (de) 1993-01-07
EP0342227A1 (de) 1989-11-23
DE3877350T2 (de) 1993-05-06
KR890702184A (ko) 1989-12-23
WO1989005027A1 (en) 1989-06-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee