FR2450495B1 - Tete magnetique realisee en couche mince et comportant plusieurs entrefers - Google Patents

Tete magnetique realisee en couche mince et comportant plusieurs entrefers

Info

Publication number
FR2450495B1
FR2450495B1 FR8004327A FR8004327A FR2450495B1 FR 2450495 B1 FR2450495 B1 FR 2450495B1 FR 8004327 A FR8004327 A FR 8004327A FR 8004327 A FR8004327 A FR 8004327A FR 2450495 B1 FR2450495 B1 FR 2450495B1
Authority
FR
France
Prior art keywords
thin film
magnetic head
head made
several gaps
gaps
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
FR8004327A
Other languages
English (en)
Other versions
FR2450495A1 (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2450495A1 publication Critical patent/FR2450495A1/fr
Application granted granted Critical
Publication of FR2450495B1 publication Critical patent/FR2450495B1/fr
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
    • G11B5/31—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
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/332—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using thin films

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
FR8004327A 1979-02-28 1980-02-27 Tete magnetique realisee en couche mince et comportant plusieurs entrefers Expired FR2450495B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7901577A NL7901577A (nl) 1979-02-28 1979-02-28 Meerspoors dunne film magneetkop.

Publications (2)

Publication Number Publication Date
FR2450495A1 FR2450495A1 (fr) 1980-09-26
FR2450495B1 true FR2450495B1 (fr) 1987-09-18

Family

ID=19832706

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8004327A Expired FR2450495B1 (fr) 1979-02-28 1980-02-27 Tete magnetique realisee en couche mince et comportant plusieurs entrefers

Country Status (8)

Country Link
US (1) US4320428A (fr)
JP (2) JPS55117727A (fr)
CA (1) CA1151766A (fr)
DE (1) DE3007046A1 (fr)
FR (1) FR2450495B1 (fr)
GB (1) GB2044509B (fr)
HK (1) HK64184A (fr)
NL (1) NL7901577A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418372A (en) * 1979-08-02 1983-11-29 Hitachi, Ltd. Magnetic rotary encoder
DE3204184A1 (de) * 1982-02-06 1983-08-11 Robert Bosch Gmbh, 7000 Stuttgart Duennschicht-mehrspur-magnetkopf hoher spurdichte
US4503439A (en) * 1983-03-08 1985-03-05 Springer Gilbert D Thin-film, compliant, non-pressure-point-telegraphing, electromagnetic read/write head structure
EP0124435B1 (fr) * 1983-04-27 1988-06-29 EASTMAN KODAK COMPANY (a New Jersey corporation) Tête magnétique pour film mince avec indication d'usure
US4639808A (en) * 1984-09-26 1987-01-27 Storage Technology Corporation Asymmetrical shields for controlling feedthrough in read/write heads
EP0178898A3 (fr) * 1984-10-18 1988-03-30 International Business Machines Corporation Transducteur magnétique inductif
JPS61104313A (ja) * 1984-10-22 1986-05-22 Sharp Corp 薄膜磁気ヘツド装置
US4799119A (en) * 1986-09-10 1989-01-17 International Business Machines Corporation Flexible circuit magnetic core winding for a core member

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1879364U (de) * 1961-11-17 1963-09-19 Wohlenberg K G H Setzmagnetkopf fuer impulsmarkentraeger.
GB1307886A (en) * 1970-05-12 1973-02-21 Ibm Magnetic transducing head
JPS49112610A (fr) * 1973-02-26 1974-10-26
JPS5330486B2 (fr) * 1973-07-18 1978-08-28
US4065797A (en) * 1974-12-20 1977-12-27 Matsushita Electric Industrial Co., Ltd. Multi-element magnetic head
JPS554734A (en) * 1978-06-23 1980-01-14 Fujitsu Ltd Thin film magnetic head for vertical magnetic recording

Also Published As

Publication number Publication date
NL7901577A (nl) 1980-09-01
GB2044509A (en) 1980-10-15
DE3007046C2 (fr) 1987-01-02
DE3007046A1 (de) 1980-09-11
JPH01146305U (fr) 1989-10-09
CA1151766A (fr) 1983-08-09
JPH0233290Y2 (fr) 1990-09-07
FR2450495A1 (fr) 1980-09-26
US4320428A (en) 1982-03-16
JPS55117727A (en) 1980-09-10
GB2044509B (en) 1983-05-11
HK64184A (en) 1984-08-24

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Legal Events

Date Code Title Description
ST Notification of lapse