USB371787I5 - - Google Patents

Info

Publication number
USB371787I5
USB371787I5 US37178773A USB371787I5 US B371787 I5 USB371787 I5 US B371787I5 US 37178773 A US37178773 A US 37178773A US B371787 I5 USB371787 I5 US B371787I5
Authority
US
United States
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.)
Pending
Application number
Other languages
English (en)
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 filed Critical
Priority to US371787A priority Critical patent/US3921217A/en
Publication of USB371787I5 publication Critical patent/USB371787I5/en
Application granted granted Critical
Publication of US3921217A publication Critical patent/US3921217A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3916—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide
    • G11B5/3919—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path
    • G11B5/3922—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path the read-out elements being disposed in magnetic shunt relative to at least two parts of the flux guide structure
    • G11B5/3925—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path the read-out elements being disposed in magnetic shunt relative to at least two parts of the flux guide structure the two parts being thin films
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/02—Dosimeters
    • G01T1/10—Luminescent dosimeters
    • G01T1/11—Thermo-luminescent dosimeters
    • G01T1/115—Read-out devices
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Magnetic Heads (AREA)
US371787A 1971-12-27 1973-06-20 Three-legged magnetic recording head using a magnetorestive element Expired - Lifetime US3921217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US371787A US3921217A (en) 1971-12-27 1973-06-20 Three-legged magnetic recording head using a magnetorestive element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21259171A 1971-12-27 1971-12-27
US371787A US3921217A (en) 1971-12-27 1973-06-20 Three-legged magnetic recording head using a magnetorestive element

Publications (2)

Publication Number Publication Date
USB371787I5 true USB371787I5 (en, 2012) 1975-01-28
US3921217A US3921217A (en) 1975-11-18

Family

ID=26907292

Family Applications (1)

Application Number Title Priority Date Filing Date
US371787A Expired - Lifetime US3921217A (en) 1971-12-27 1973-06-20 Three-legged magnetic recording head using a magnetorestive element

Country Status (1)

Country Link
US (1) US3921217A (en, 2012)

Cited By (3)

* 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
US4065797A (en) 1974-12-20 1977-12-27 Matsushita Electric Industrial Co., Ltd. Multi-element magnetic head
US4068272A (en) 1974-11-19 1978-01-10 Matsushita Electric Industrial Co., Ltd. High sensitivity magnetic head using magneto-resistive effect element

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071868A (en) * 1974-12-20 1978-01-31 Matsushita Electric Industrial Co., Ltd. Narrow track MR head with side shields
NL7508533A (nl) * 1975-07-17 1977-01-19 Philips Nv Dunne film magneetkop voor het lezen en schrijven van informatie.
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
JPS5475284A (en) * 1977-11-29 1979-06-15 Asahi Chemical Ind Threeeterminal magnetic reluctance effect element
NL7901578A (nl) 1979-02-28 1980-09-01 Philips Nv Magnetoweerstandkop.
NL7804377A (nl) * 1978-04-25 1979-10-29 Philips Nv Magnetoweerstandkop.
JPS5555421A (en) * 1978-10-17 1980-04-23 Fuji Photo Film Co Ltd Magnetic head
FR2455330A1 (fr) * 1979-04-25 1980-11-21 Cii Honeywell Bull Dispositif magnetique de transduction a magnetoresistances
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
FR2461995A1 (fr) * 1979-07-20 1981-02-06 Lcc Cice Cie Europ Compo Elect Transducteur magneto-electrique pour systeme d'enregistrement magnetique, et systeme d'enregistrement comportant un tel transducteur
US4291351A (en) * 1979-11-28 1981-09-22 International Business Machines Corporation Flux extender or guide for magnetic read head having a magnetoresistive flux sensor
US4317147A (en) * 1979-12-20 1982-02-23 International Business Machines Corporation Sandwich type magnetoresistive read head
US4356523A (en) * 1980-06-09 1982-10-26 Ampex Corporation Narrow track magnetoresistive transducer assembly
US4447839A (en) * 1980-10-28 1984-05-08 Compagnie Internationale Pour L'informatique Cii-Honeywell Bull (Societe Anonyme) Magnetoresistant transducer
NL8102148A (nl) * 1981-05-01 1982-12-01 Philips Nv Magnetisch overdrachtselement alsmede magnetisch permeabel onderdeel voor een magnetisch overdrachtselement.
JPS5832221A (ja) * 1981-08-17 1983-02-25 Sony Corp 磁気抵抗効果型磁気ヘツド
US4745509A (en) * 1981-08-21 1988-05-17 Matsushita Electric Industrial Company, Limited Magnetic head with improved supporter for perpendicular magnetization recording
US4581663A (en) * 1982-11-02 1986-04-08 Nec Corporation Buried servo recording system having dual transducers
US4566050A (en) * 1982-12-30 1986-01-21 International Business Machines Corp. (Ibm) Skew insensitive magnetic read head
NL8301188A (nl) * 1983-04-05 1984-11-01 Philips Nv Magneetkop met een dunne strook magnetoweerstandmateriaal als leeselement.
JPS6047223A (ja) * 1983-08-25 1985-03-14 Sony Corp 磁気抵抗効果型磁気ヘツド
US4604669A (en) * 1984-09-04 1986-08-05 Honeywell Inc. Magnetostrictive record head
US4885649A (en) * 1987-04-01 1989-12-05 Digital Equipment Corporation Thin film head having a magneto-restrictive read element
US5159511A (en) * 1987-04-01 1992-10-27 Digital Equipment Corporation Biasing conductor for MR head
KR930005338B1 (ko) * 1987-04-01 1993-06-17 디지탈 이퀴프먼트 코포레이숀 디지탈 데이타 처리 시스템의 자기(磁氣)기억장치용 자기(磁氣) 저항성 박막 헤드
US4935832A (en) * 1987-04-01 1990-06-19 Digital Equipment Corporation Recording heads with side shields
US4907113A (en) * 1987-07-29 1990-03-06 Digital Equipment Corporation Three-pole magnetic recording head
US5103553A (en) * 1987-07-29 1992-04-14 Digital Equipment Corporation Method of making a magnetic recording head
US5111352A (en) * 1987-07-29 1992-05-05 Digital Equipment Corporation Three-pole magnetic head with reduced flux leakage
US5075956A (en) * 1988-03-16 1991-12-31 Digital Equipment Corporation Method of making recording heads with side shields
JP2761223B2 (ja) * 1988-09-30 1998-06-04 株式会社日立製作所 記録再生複合ヘッド及びその製造方法
JP2563597B2 (ja) * 1989-08-04 1996-12-11 松下電器産業株式会社 複合型薄膜磁気ヘッド
NL8902569A (nl) * 1989-10-17 1991-05-16 Philips Nv Dunnefilm magneetkop.
US5023738A (en) * 1989-12-18 1991-06-11 Seagate Technology, Inc. Corrosion resistant magnetic recording read
NL9000546A (nl) * 1990-03-09 1991-10-01 Philips Nv Werkwijze voor het vervaardigen van een dunnefilm magneetkop alsmede een dunnefilm magneetkop vervaardigbaar volgens de werkwijze.
US5164869A (en) * 1991-02-27 1992-11-17 International Business Machines Corporation Magnetic recording head with integrated magnetoresistive element and open yoke
MY107733A (en) * 1991-05-21 1996-05-30 Onstream Inc Combined read/write magnetic head
US5258883A (en) * 1991-07-05 1993-11-02 U.S. Philips Corporation Thin-film magnetic head
JP2662334B2 (ja) * 1992-01-28 1997-10-08 ティーディーケイ株式会社 薄膜磁気ヘッド
US5301079A (en) * 1992-11-17 1994-04-05 International Business Machines Corporation Current biased magnetoresistive spin valve sensor
JPH06251339A (ja) * 1993-02-26 1994-09-09 Sony Corp 磁気抵抗効果型薄膜磁気ヘッド及びバイアス特性測定方法
EP0638893A3 (en) * 1993-08-10 1996-05-15 Read Rite Corp Magnetic head with flow detector element for recording / reproducing on a tape.
KR970703576A (ko) * 1995-03-24 1997-07-03 요트.게.아 롤페즈 자기헤드와 측정디바이스와 전류 디바이스를 구비한 시스템(System comprising a magnetic head, a measuring device and a current device)
WO1998016921A1 (en) * 1996-10-15 1998-04-23 Seagate Technology, Inc. Magnetoresistive head having shorted shield configuration for inductive pickup minimization
EP0889460B1 (en) * 1997-07-04 2003-09-24 STMicroelectronics S.r.l. An electromagnetic head with magnetoresistive means connected to a magnetic core
NL1011679C2 (nl) * 1999-03-26 2000-09-27 Onstream B V Magnetische flux-sensor.
US6771462B1 (en) * 1999-09-20 2004-08-03 Seagate Technology Llc Perpendicular recording head including concave tip
US6809900B2 (en) * 2001-01-25 2004-10-26 Seagate Technology Llc Write head with magnetization controlled by spin-polarized electron current
US6888700B2 (en) * 2001-07-20 2005-05-03 Seagate Technology Llc Perpendicular magnetic recording apparatus for improved playback resolution having flux generating elements proximate the read element
JP2004334945A (ja) * 2003-05-02 2004-11-25 Fuji Photo Film Co Ltd 複合型磁気ヘッド及びその製造方法
US20040251506A1 (en) * 2003-06-10 2004-12-16 Johnson Mark B. Hall effect devices, memory devices, and hall effect device readout voltage increasing methods

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712601A (en) * 1951-06-09 1955-07-05 Voltohm Processes Ltd Mechanical-electrical transducer
US3163721A (en) * 1959-07-02 1964-12-29 Siemens Ag Transducer for magnetic recordings
US3355727A (en) * 1963-07-24 1967-11-28 Donald C Gaubatz Shield utilized as flux path for magnetic head
USRE26610E (en) * 1968-02-26 1969-06-24 Search room
US3493694A (en) * 1966-01-19 1970-02-03 Ampex Magnetoresistive head
US3568180A (en) * 1967-11-01 1971-03-02 Dixi Sa Encoder
US3624313A (en) * 1969-06-16 1971-11-30 Seggos Ind Inc Combined inductive and flux-responsive transducer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712601A (en) * 1951-06-09 1955-07-05 Voltohm Processes Ltd Mechanical-electrical transducer
US3163721A (en) * 1959-07-02 1964-12-29 Siemens Ag Transducer for magnetic recordings
US3355727A (en) * 1963-07-24 1967-11-28 Donald C Gaubatz Shield utilized as flux path for magnetic head
US3493694A (en) * 1966-01-19 1970-02-03 Ampex Magnetoresistive head
US3568180A (en) * 1967-11-01 1971-03-02 Dixi Sa Encoder
USRE26610E (en) * 1968-02-26 1969-06-24 Search room
US3624313A (en) * 1969-06-16 1971-11-30 Seggos Ind Inc Combined inductive and flux-responsive transducer

Cited By (3)

* 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
US4068272A (en) 1974-11-19 1978-01-10 Matsushita Electric Industrial Co., Ltd. High sensitivity magnetic head using magneto-resistive effect element
US4065797A (en) 1974-12-20 1977-12-27 Matsushita Electric Industrial Co., Ltd. Multi-element magnetic head

Also Published As

Publication number Publication date
US3921217A (en) 1975-11-18

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