FR2254849B1 - - Google Patents

Info

Publication number
FR2254849B1
FR2254849B1 FR7439731A FR7439731A FR2254849B1 FR 2254849 B1 FR2254849 B1 FR 2254849B1 FR 7439731 A FR7439731 A FR 7439731A FR 7439731 A FR7439731 A FR 7439731A FR 2254849 B1 FR2254849 B1 FR 2254849B1
Authority
FR
France
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
FR7439731A
Other versions
FR2254849A1 (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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2254849A1 publication Critical patent/FR2254849A1/fr
Application granted granted Critical
Publication of FR2254849B1 publication Critical patent/FR2254849B1/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
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
FR7439731A 1973-12-12 1974-10-16 Expired FR2254849B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US424242A US3887945A (en) 1973-12-12 1973-12-12 Head assembly for recording and reading, employing inductive and magnetoresistive elements

Publications (2)

Publication Number Publication Date
FR2254849A1 FR2254849A1 (fr) 1975-07-11
FR2254849B1 true FR2254849B1 (fr) 1976-10-22

Family

ID=23681973

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439731A Expired FR2254849B1 (fr) 1973-12-12 1974-10-16

Country Status (6)

Country Link
US (1) US3887945A (fr)
JP (1) JPS5337206B2 (fr)
DE (1) DE2455485A1 (fr)
FR (1) FR2254849B1 (fr)
GB (1) GB1449989A (fr)
IT (1) IT1022795B (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945038A (en) * 1971-12-22 1976-03-16 Compagnie Internationale Pour L'informatique Read-write magnetoresistive transducer having a plurality of MR elements
US3940797A (en) * 1973-09-20 1976-02-24 International Business Machines Corporation Shielded magnetoresistive magnetic transducer
GB1518515A (en) * 1974-08-20 1978-07-19 Matsushita Electric Ind Co Ltd Magnetic heads
US4068272A (en) * 1974-11-19 1978-01-10 Matsushita Electric Industrial Co., Ltd. High sensitivity magnetic head using magneto-resistive effect element
US4071868A (en) * 1974-12-20 1978-01-31 Matsushita Electric Industrial Co., Ltd. Narrow track MR head with side shields
JPS6112593Y2 (fr) * 1975-09-10 1986-04-19
US4130847A (en) * 1977-03-31 1978-12-19 International Business Machines Corporation Corrosion resistant thin film head assembly and method for making
US4321641A (en) * 1977-09-02 1982-03-23 Magnex Corporation Thin film magnetic recording heads
FR2455330A1 (fr) * 1979-04-25 1980-11-21 Cii Honeywell Bull Dispositif magnetique de transduction a magnetoresistances
US4255772A (en) * 1979-06-29 1981-03-10 International Business Machines Corporation Read/write magnetic head assembly with magnetoresistive sensor
JPS5613513A (en) * 1979-07-11 1981-02-09 Matsushita Electric Ind Co Ltd Magnetic head and its manufacture
JPS5616932A (en) * 1979-07-18 1981-02-18 Olympus Optical Co Ltd Recording and reproducing head for vertical magnetic recording and manufacture of this recording and reproducing head and recording and reproducing unit using this recording and reproducing head
US4555740A (en) * 1983-04-04 1985-11-26 Hewlett-Packard Company Thin film transducer head for inductive recording and magnetoresistive reading
ATE36088T1 (de) * 1984-12-21 1988-08-15 Siemens Ag Duennfilm-magnetkopf auf einem nicht-magnetischen substrat zur senkrechten magnetisierung.
US4881143A (en) * 1988-01-19 1989-11-14 Hewlett-Packard Company Compensated magneto-resistive read head
US4970621A (en) * 1988-09-09 1990-11-13 Hewlett-Packard Company Demagnetization of thin film magnetic recording transducers utilizing a decreasing AC current
JPH02168408A (ja) * 1988-09-19 1990-06-28 Hitachi Ltd 記録再生用磁気ヘッドおよびその製造方法
US5023738A (en) * 1989-12-18 1991-06-11 Seagate Technology, Inc. Corrosion resistant magnetic recording read
FR2657189B1 (fr) * 1990-01-18 1993-12-31 Commissariat A Energie Atomique Tete magnetique de lecture et d'ecriture a element magnetoresistant.
JPH05114119A (ja) * 1991-10-21 1993-05-07 Fujitsu Ltd 磁気抵抗効果型磁気ヘツド
US5311385A (en) * 1991-12-18 1994-05-10 Minnesota Mining And Manufacturing Company Magnetoresistive head with integrated bias and magnetic shield layer
US5331493A (en) * 1992-08-21 1994-07-19 Minnesota Mining And Manufacturing Company Bidirectional thin-film magnetoresistive tape head assembly
US5446613A (en) * 1994-02-28 1995-08-29 Read-Rite Corporation Magnetic head assembly with MR sensor
US5435053A (en) * 1994-03-02 1995-07-25 International Business Machines Corporation Simplified method of making merged MR head
JP2015089215A (ja) 2013-10-30 2015-05-07 株式会社デンソー 回転電機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493694A (en) * 1966-01-19 1970-02-03 Ampex Magnetoresistive head
BE792917A (fr) * 1971-12-27 1973-04-16 Ibm Tete de transduction magnetique
US3813692A (en) * 1972-10-11 1974-05-28 Ibm Internally biased magnetoresistive magnetic transducer
US3814863A (en) * 1972-10-11 1974-06-04 Ibm Internally biased magnetoresistive magnetic transducer

Also Published As

Publication number Publication date
FR2254849A1 (fr) 1975-07-11
JPS5093127A (fr) 1975-07-25
DE2455485A1 (de) 1975-06-19
US3887945A (en) 1975-06-03
IT1022795B (it) 1978-04-20
GB1449989A (en) 1976-09-15
JPS5337206B2 (fr) 1978-10-07

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Legal Events

Date Code Title Description
ST Notification of lapse