JPS5448575A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS5448575A
JPS5448575A JP11469977A JP11469977A JPS5448575A JP S5448575 A JPS5448575 A JP S5448575A JP 11469977 A JP11469977 A JP 11469977A JP 11469977 A JP11469977 A JP 11469977A JP S5448575 A JPS5448575 A JP S5448575A
Authority
JP
Japan
Prior art keywords
magnetic
paths
magnetoresistance
gratings
plural
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.)
Granted
Application number
JP11469977A
Other languages
Japanese (ja)
Other versions
JPS6360326B2 (en
Inventor
Akiyoshi Narimatsu
Hiroyuki Okubo
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP11469977A priority Critical patent/JPS5448575A/en
Publication of JPS5448575A publication Critical patent/JPS5448575A/en
Publication of JPS6360326B2 publication Critical patent/JPS6360326B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE: To form the magnetic head suitable for reading of high density recording with accuracy and ease by combining two sets of magnetoresistance elements provided with plural magnetic resistance paths which become zigzag form current paths and a bias magnet.
CONSTITUTION: Plural magnetoresistance paths 6 constituting magnetoresistance elements 5 are disposed zigzag in correspondence to the respective phases of magnetic gratings 4 to increase the detection sensitivity of magnetic scale 1 signal and reduce the pitch of the magnetic gratings 4. Magnetic path members 7 composed of high magnetic thin-films are disposed for the respective magnetoresistance paths 6 to form closed magnetic paths with the respective magnetic gratings 4. The magnetoresistance elements 8, 9 placed in sufficient saturated magnetic fields and a bias magnet 10 are so combined as to guide the leakage magnetic fluxes from the respective magnetic gratings 4. Output terminals 15, 16 are connected at the intermediate connection points of the magnetoresistance paths 6, 6
COPYRIGHT: (C)1979,JPO&Japio
JP11469977A 1977-09-26 1977-09-26 Magnetic head Granted JPS5448575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11469977A JPS5448575A (en) 1977-09-26 1977-09-26 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11469977A JPS5448575A (en) 1977-09-26 1977-09-26 Magnetic head

Publications (2)

Publication Number Publication Date
JPS5448575A true JPS5448575A (en) 1979-04-17
JPS6360326B2 JPS6360326B2 (en) 1988-11-24

Family

ID=14644404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11469977A Granted JPS5448575A (en) 1977-09-26 1977-09-26 Magnetic head

Country Status (1)

Country Link
JP (1) JPS5448575A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5766309A (en) * 1980-10-09 1982-04-22 Hitachi Ltd Device for sensing rotation of rotating body
JPS5779410A (en) * 1980-11-06 1982-05-18 Sony Corp Coaxial magnetic scale
JPS5814011A (en) * 1981-07-20 1983-01-26 Hitachi Ltd Magnetic encoder
JPS597213A (en) * 1982-07-05 1984-01-14 Inoue Japax Res Inc Encoder
JPH067731U (en) * 1992-07-02 1994-02-01 株式会社アート・スリー Urn
JP2015111106A (en) * 2013-10-28 2015-06-18 日立金属株式会社 Magnetic medium for magnetic encoder, magnetic encoder, and magnetic medium manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5766309A (en) * 1980-10-09 1982-04-22 Hitachi Ltd Device for sensing rotation of rotating body
JPS5779410A (en) * 1980-11-06 1982-05-18 Sony Corp Coaxial magnetic scale
JPS5814011A (en) * 1981-07-20 1983-01-26 Hitachi Ltd Magnetic encoder
JPS597213A (en) * 1982-07-05 1984-01-14 Inoue Japax Res Inc Encoder
JPH067731U (en) * 1992-07-02 1994-02-01 株式会社アート・スリー Urn
JP2015111106A (en) * 2013-10-28 2015-06-18 日立金属株式会社 Magnetic medium for magnetic encoder, magnetic encoder, and magnetic medium manufacturing method

Also Published As

Publication number Publication date
JPS6360326B2 (en) 1988-11-24

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