HK71294A - Magnetic recording/reproducing head and process for making it - Google Patents

Magnetic recording/reproducing head and process for making it

Info

Publication number
HK71294A
HK71294A HK71294A HK71294A HK71294A HK 71294 A HK71294 A HK 71294A HK 71294 A HK71294 A HK 71294A HK 71294 A HK71294 A HK 71294A HK 71294 A HK71294 A HK 71294A
Authority
HK
Hong Kong
Prior art keywords
making
magnetic recording
reproducing head
reproducing
head
Prior art date
Application number
HK71294A
Other languages
English (en)
Inventor
Juergen Machui
Paul-Louis Meunier
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of HK71294A publication Critical patent/HK71294A/xx

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
    • G11B5/21—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 of ferrous sheet metal or other magnetic layers
    • 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
    • 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
    • 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
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
    • 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
    • G11B5/3176—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps
    • G11B5/3179—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps the films being mainly disposed in parallel planes
    • G11B5/3183—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps the films being mainly disposed in parallel planes intersecting the gap plane, e.g. "horizontal head structure"

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
HK71294A 1987-10-27 1994-07-21 Magnetic recording/reproducing head and process for making it HK71294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8714818A FR2622335B1 (fr) 1987-10-27 1987-10-27 Tete magnetique d'enregistrement lecture et procede de realisation

Publications (1)

Publication Number Publication Date
HK71294A true HK71294A (en) 1994-07-29

Family

ID=9356189

Family Applications (1)

Application Number Title Priority Date Filing Date
HK71294A HK71294A (en) 1987-10-27 1994-07-21 Magnetic recording/reproducing head and process for making it

Country Status (9)

Country Link
US (1) US5404260A (ko)
EP (1) EP0338063B1 (ko)
JP (1) JPH02501962A (ko)
KR (1) KR0137367B1 (ko)
CA (1) CA1321021C (ko)
DE (1) DE3872513T2 (ko)
FR (1) FR2622335B1 (ko)
HK (1) HK71294A (ko)
WO (1) WO1989004037A1 (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0452846B1 (en) 1990-04-16 1996-02-28 Hitachi, Ltd. Narrow track thin film magnetic head and fabrication method thereof
US5905613A (en) * 1997-07-18 1999-05-18 International Business Machines Corporation Bidirectional flat contour linear tape recording head and drive
US6055138A (en) * 1998-05-06 2000-04-25 Read-Rite Corporation Thin film pedestal pole tips write head having narrower lower pedestal pole tip
FR2797514B3 (fr) 1999-08-10 2001-10-12 Thomson Csf Dispositif de lecture magneto-optique pour bandes magnetiques multipistes
US7248438B2 (en) * 2003-12-15 2007-07-24 International Business Machines Corporation Compression zone recording head

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1272521A (fr) * 1960-06-23 1961-09-29 Elliott Brothers London Ltd Perfectionnements apportés aux têtes magnétiques pour enregistreurs, et à leurs procédés de fabrication
GB1411629A (en) * 1971-12-14 1975-10-29 Matsushita Electric Ind Co Ltd Magnetic recording head and manufacture thereof
US3893187A (en) * 1973-03-20 1975-07-01 Matsushita Electric Ind Co Ltd Scanning magnetic head
US4100584A (en) * 1975-12-11 1978-07-11 Burroughs Corporation Transducer head with narrow core structure
JPS5564626A (en) * 1978-11-06 1980-05-15 Nec Corp Compound magnetic head
JPS5665325A (en) * 1979-10-31 1981-06-03 Nippon Gakki Seizo Kk Manufacture of magnetic head
JPS5726412A (en) * 1980-07-23 1982-02-12 Canon Inc Magnetic core
JPS5758730A (en) * 1980-09-25 1982-04-08 Kinji Tateno Construction of foundation beam
JPS58224420A (ja) * 1982-06-23 1983-12-26 Matsushita Electric Ind Co Ltd 磁気ヘツドおよびその製造方法
JPS598115A (ja) * 1982-07-07 1984-01-17 Matsushita Electric Ind Co Ltd 磁気ヘッドの製造方法
JPS5930227A (ja) * 1982-08-10 1984-02-17 Matsushita Electric Ind Co Ltd 磁気ヘツドの製造方法
JPS60214406A (ja) * 1984-04-11 1985-10-26 Canon Electronics Inc 磁気ヘツド
JPS6151604A (ja) * 1984-08-21 1986-03-14 Toshiba Corp 磁気ヘツドとその製造方法
NL8403595A (nl) * 1984-11-27 1986-06-16 Philips Nv Magneetkop met kerndelen van amorf ferromagnetisch metaal.
JPS61151818A (ja) * 1984-12-26 1986-07-10 Hitachi Ltd 薄膜磁気ヘツド
JPS61196410A (ja) * 1985-02-25 1986-08-30 Nec Kansai Ltd 磁気ヘツド製造方法

Also Published As

Publication number Publication date
FR2622335B1 (fr) 1990-01-26
FR2622335A1 (fr) 1989-04-28
EP0338063B1 (fr) 1992-07-01
CA1321021C (fr) 1993-08-03
EP0338063A1 (fr) 1989-10-25
KR890702181A (ko) 1989-12-23
JPH02501962A (ja) 1990-06-28
DE3872513D1 (de) 1992-08-06
KR0137367B1 (ko) 1998-05-15
DE3872513T2 (de) 1993-01-28
US5404260A (en) 1995-04-04
WO1989004037A1 (fr) 1989-05-05

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20051021