FR2373850A1 - MAGNETIC RECORDING HEAD - Google Patents

MAGNETIC RECORDING HEAD

Info

Publication number
FR2373850A1
FR2373850A1 FR7737484A FR7737484A FR2373850A1 FR 2373850 A1 FR2373850 A1 FR 2373850A1 FR 7737484 A FR7737484 A FR 7737484A FR 7737484 A FR7737484 A FR 7737484A FR 2373850 A1 FR2373850 A1 FR 2373850A1
Authority
FR
France
Prior art keywords
magnetic recording
recording head
wedge
defines
digital data
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.)
Withdrawn
Application number
FR7737484A
Other languages
French (fr)
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of FR2373850A1 publication Critical patent/FR2373850A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Magnetic Heads (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

L'invention concerne une tête d'enregistrement et de lecture magnétique. Elle est réalisée en alliage métallique, en forme de coin, de manière à comporter une partie de base plus épaisse et un bord d'appui plus mince dont l'épaisseur définit la largeur de piste sur un support d'enregistrement magnétique. L'invention s'applique notamment à l'enregistrement magnétique des images de télévision et des données numériques.The invention relates to a magnetic recording and reading head. It is made of a metal alloy, in the form of a wedge, so as to have a thicker base part and a thinner bearing edge, the thickness of which defines the track width on a magnetic recording medium. The invention applies in particular to the magnetic recording of television images and digital data.

FR7737484A 1976-12-13 1977-12-13 MAGNETIC RECORDING HEAD Withdrawn FR2373850A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74995476A 1976-12-13 1976-12-13

Publications (1)

Publication Number Publication Date
FR2373850A1 true FR2373850A1 (en) 1978-07-07

Family

ID=25015916

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737484A Withdrawn FR2373850A1 (en) 1976-12-13 1977-12-13 MAGNETIC RECORDING HEAD

Country Status (5)

Country Link
JP (1) JPS5374411A (en)
DE (1) DE2755513A1 (en)
FR (1) FR2373850A1 (en)
GB (1) GB1591237A (en)
NL (1) NL7712685A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138580A2 (en) * 1983-10-12 1985-04-24 Matsushita Electric Industrial Co., Ltd. Alloy magnetic recording head
FR2573902A1 (en) * 1984-11-26 1986-05-30 Sony Corp MAGNETIC TRANSDUCER HEAD
US4811148A (en) * 1984-03-06 1989-03-07 Matsushita Electric Industrial Co., Ltd. Alloy magnetic recording head

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219853A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Read/write thin film head
KR930009625B1 (en) * 1984-09-19 1993-10-07 히다찌 마꾸세루 가부시끼가이샤 Magnetic recording medium
GB2170640B (en) * 1985-01-31 1989-10-25 Pioneer Electronic Corp Magnetic head and method of manufacture
JP2012176382A (en) 2011-02-28 2012-09-13 Nippon Steel Engineering Co Ltd Magnetic separation filter device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL289674A (en) * 1963-03-01
DE2222909A1 (en) * 1972-05-05 1973-11-15 Licentia Gmbh MAGNETIC CORE FOR A VIDEO MAGNETIC HEAD

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138580A2 (en) * 1983-10-12 1985-04-24 Matsushita Electric Industrial Co., Ltd. Alloy magnetic recording head
EP0138580A3 (en) * 1983-10-12 1986-04-02 Matsushita Electric Industrial Co., Ltd. Alloy magnetic recording head and a manufacturing method therefore
US4811148A (en) * 1984-03-06 1989-03-07 Matsushita Electric Industrial Co., Ltd. Alloy magnetic recording head
FR2573902A1 (en) * 1984-11-26 1986-05-30 Sony Corp MAGNETIC TRANSDUCER HEAD
US4788611A (en) * 1984-11-26 1988-11-29 Sony Corporation Magnetic transducer head

Also Published As

Publication number Publication date
GB1591237A (en) 1981-06-17
JPS5374411A (en) 1978-07-01
NL7712685A (en) 1978-06-15
DE2755513A1 (en) 1978-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse