JPS57164415A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS57164415A
JPS57164415A JP4746981A JP4746981A JPS57164415A JP S57164415 A JPS57164415 A JP S57164415A JP 4746981 A JP4746981 A JP 4746981A JP 4746981 A JP4746981 A JP 4746981A JP S57164415 A JPS57164415 A JP S57164415A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic poles
reflux
vertical magnetization
main
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.)
Pending
Application number
JP4746981A
Other languages
Japanese (ja)
Inventor
Wakatake Matsuda
Genichi Ishida
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4746981A priority Critical patent/JPS57164415A/en
Publication of JPS57164415A publication Critical patent/JPS57164415A/en
Pending 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
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To improve electromagnetic conversion efficiency, by providing plural main magnetic poles and singular or plural reflux magnetic poles, in a multichannel magnetic head for vertical magnetization recording, and setting areas of their ends to a prescribed ratio. CONSTITUTION:In a multichannel magnetic head for vertical magnetization recording, 4 main magnetic poles 10-13 and 1 reflux magnetic pole 14 are provided on a slider 15, and a coil 16 is wound around the main magnetic poles 10-13. A recording medium consists of a nonmagnetic substrate 3, a magnetic layer 4 and a vertical magnetization magnetic substance layer 5. When a recording current flows to the coil 16, a closed magnetic path passing through the magnetic substance layer 4 from the main magnetic poles 10-13 and returning to the reflux magnetic pole 14 is formed, and the electromagnetic conversion efficiency is improved. Also, in order to magnetize only the vertical magnetization magnetic substance layer 5 being directly under the main magnetic poles 10-13, the ratio of the sum of areas of the ends of the main magnetic poles, to the area of the end of the reflux magnetic pole 14 is set to >=(1:6).
JP4746981A 1981-03-31 1981-03-31 Magnetic head Pending JPS57164415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4746981A JPS57164415A (en) 1981-03-31 1981-03-31 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4746981A JPS57164415A (en) 1981-03-31 1981-03-31 Magnetic head

Publications (1)

Publication Number Publication Date
JPS57164415A true JPS57164415A (en) 1982-10-09

Family

ID=12776004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4746981A Pending JPS57164415A (en) 1981-03-31 1981-03-31 Magnetic head

Country Status (1)

Country Link
JP (1) JPS57164415A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513337A (en) * 1980-08-20 1985-04-23 Kabushiki Kaisha Suwa Seikosha Magnetic head for perpendicular magnetization recording
EP0353304A1 (en) * 1987-12-28 1990-02-07 Nippon Hoso Kyokai Thin-film magnetic head and method of producing the same
WO1999008262A1 (en) * 1997-08-08 1999-02-18 Sharp Kabushiki Kaisha Magnetic recorder/reproducer and magnetic recording/reproducing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513337A (en) * 1980-08-20 1985-04-23 Kabushiki Kaisha Suwa Seikosha Magnetic head for perpendicular magnetization recording
EP0353304A1 (en) * 1987-12-28 1990-02-07 Nippon Hoso Kyokai Thin-film magnetic head and method of producing the same
EP0353304A4 (en) * 1987-12-28 1991-07-03 Nippon Hoso Kyokai Thin-film magnetic head and method of producing the same
WO1999008262A1 (en) * 1997-08-08 1999-02-18 Sharp Kabushiki Kaisha Magnetic recorder/reproducer and magnetic recording/reproducing method
US6327227B1 (en) * 1997-08-08 2001-12-04 Sharp Kabushiki Kaisha Magnetic recorder/reproduction apparatus including a selective temperature controller and magnetic recording reproduction method including selective temperature control

Similar Documents

Publication Publication Date Title
JPS57164416A (en) Magnetic head
JPS54119220A (en) Magnetic head
JPS5724015A (en) Thin film magnetic head
JPS57164415A (en) Magnetic head
JPS5555420A (en) Vertical magnetization recording device
JPS57164412A (en) Magnetic head
JPS5577025A (en) Erasing head
JPS5687216A (en) Multitrack vertical magnetization type magnetic head
JPS554722A (en) Magnetoresistance effect head
JPS5463808A (en) Multi-channel magnetic head
JPS57210416A (en) Magnetic head
JPS57196513A (en) Choke coil of switching regulator or the like
JPS57127917A (en) Magnetic head device
JPS62262212A (en) Thin film magnetic head
JPS551611A (en) Megnetic recording and reproducing device
JPS5788513A (en) Vertical magnetizing type magnetic head
JPS5718010A (en) Magnetic recording and reproducing system
JPS5737713A (en) Vertical magnetic recording head
JPS5564627A (en) Manufacture of multi-element magnetic head
JPS57172508A (en) Vertical magnetic recorder
JPS5545162A (en) Magnetic head
JPS6442012A (en) Magnetic head
JPS5567932A (en) Magnetic head
JPS57191823A (en) Magnetic head
JPS5567935A (en) Magnetic resistance effect head