JPS54157613A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS54157613A
JPS54157613A JP6634978A JP6634978A JPS54157613A JP S54157613 A JPS54157613 A JP S54157613A JP 6634978 A JP6634978 A JP 6634978A JP 6634978 A JP6634978 A JP 6634978A JP S54157613 A JPS54157613 A JP S54157613A
Authority
JP
Japan
Prior art keywords
protrusion
coil
data
ferromagnetic material
annular recess
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
JP6634978A
Other languages
Japanese (ja)
Inventor
Masao Hiyane
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 JP6634978A priority Critical patent/JPS54157613A/en
Publication of JPS54157613A publication Critical patent/JPS54157613A/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)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To obtain a construction which makes possible both functions of read and write and is suited for micro-miniaturization by providing a spiral coil in the annular recess formed in a ferromagnetic material substrate. CONSTITUTION:An annular recess 7 is provided around the protrusion 6 of a ferromagnetic material substrate 4. A spiral coil 5 is provided on the insulation layer 11 of the bottom thereof, one end of the coil 5 being connected to the protrusion 6 and the other end being connected to external terminal 10 through notch 8. When the drive current corresponding to data is flowed to the coil 5 at the time of writing data in a magnetic disc, the data are written in perpendicular magnetization system in the portion of the disc facing the protrusion 6. At the reading, the recording information pases the protrusion 6 and voltage is induced in the coil 5 at the change point thereof.
JP6634978A 1978-06-02 1978-06-02 Magnetic head Pending JPS54157613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6634978A JPS54157613A (en) 1978-06-02 1978-06-02 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6634978A JPS54157613A (en) 1978-06-02 1978-06-02 Magnetic head

Publications (1)

Publication Number Publication Date
JPS54157613A true JPS54157613A (en) 1979-12-12

Family

ID=13313286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6634978A Pending JPS54157613A (en) 1978-06-02 1978-06-02 Magnetic head

Country Status (1)

Country Link
JP (1) JPS54157613A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051123A2 (en) * 1980-11-03 1982-05-12 International Business Machines Corporation Magnetic head assembly
FR2510290A1 (en) * 1981-07-27 1983-01-28 Hitachi Ltd THIN-FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING SUCH MAGNETIC HEAD
JPS5830925U (en) * 1981-08-19 1983-02-28 ナカミチ株式会社 Single pole magnetic head
JPS58116562A (en) * 1981-12-25 1983-07-11 フエリクス・コ−ポレ−シヨン Magnetic video generation method and apparatus
FR2559294A1 (en) * 1984-02-03 1985-08-09 Commissariat Energie Atomique NOVEL MAGNETIC WRITE AND READING HEAD FOR PERPENDICULAR RECORDING AND METHOD FOR MANUFACTURING THE SAME
FR2559293A1 (en) * 1984-02-03 1985-08-09 Commissariat Energie Atomique NOVEL MAGNETIC WRITE AND READ HEAD FOR MAGNETIC RECORDING AND METHOD FOR MANUFACTURING THE SAME
FR2575577A1 (en) * 1984-12-28 1986-07-04 Bull Sa MAGNETIC WRITING / READING TRANSDUCER FOR PERPENDICULAR RECORDING
EP0644529A2 (en) * 1993-09-20 1995-03-22 Fujitsu Limited A magnetic memory device
JP2013065828A (en) * 2011-08-26 2013-04-11 Rohm Co Ltd Magnetic metal substrate and inductance element

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051123A2 (en) * 1980-11-03 1982-05-12 International Business Machines Corporation Magnetic head assembly
FR2510290A1 (en) * 1981-07-27 1983-01-28 Hitachi Ltd THIN-FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING SUCH MAGNETIC HEAD
JPS5830925U (en) * 1981-08-19 1983-02-28 ナカミチ株式会社 Single pole magnetic head
JPS58116562A (en) * 1981-12-25 1983-07-11 フエリクス・コ−ポレ−シヨン Magnetic video generation method and apparatus
EP0152326A2 (en) * 1984-02-03 1985-08-21 Commissariat A L'energie Atomique Process for producing a write-and-read magnetic head
FR2559293A1 (en) * 1984-02-03 1985-08-09 Commissariat Energie Atomique NOVEL MAGNETIC WRITE AND READ HEAD FOR MAGNETIC RECORDING AND METHOD FOR MANUFACTURING THE SAME
FR2559294A1 (en) * 1984-02-03 1985-08-09 Commissariat Energie Atomique NOVEL MAGNETIC WRITE AND READING HEAD FOR PERPENDICULAR RECORDING AND METHOD FOR MANUFACTURING THE SAME
US4731157A (en) * 1984-02-03 1988-03-15 Commissariat A L'energie Atomique Process for the production of a magnetic head for perpendicular recording
FR2575577A1 (en) * 1984-12-28 1986-07-04 Bull Sa MAGNETIC WRITING / READING TRANSDUCER FOR PERPENDICULAR RECORDING
EP0644529A2 (en) * 1993-09-20 1995-03-22 Fujitsu Limited A magnetic memory device
EP0644529A3 (en) * 1993-09-20 1995-12-06 Fujitsu Ltd A magnetic memory device.
US5717630A (en) * 1993-09-20 1998-02-10 Fujitsu Limited Magnetic memory device
JP2013065828A (en) * 2011-08-26 2013-04-11 Rohm Co Ltd Magnetic metal substrate and inductance element

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