JPS563424A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS563424A
JPS563424A JP7715979A JP7715979A JPS563424A JP S563424 A JPS563424 A JP S563424A JP 7715979 A JP7715979 A JP 7715979A JP 7715979 A JP7715979 A JP 7715979A JP S563424 A JPS563424 A JP S563424A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic flux
film
fitting surface
head
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
JP7715979A
Other languages
Japanese (ja)
Other versions
JPS6220606B2 (en
Inventor
Kiyoshi Muramori
Mitsuharu Tamura
Mitsuo Abe
Katsuo Konishi
Kuniaki Miura
Hideo Zama
Kanji Kawano
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7715979A priority Critical patent/JPS563424A/en
Publication of JPS563424A publication Critical patent/JPS563424A/en
Publication of JPS6220606B2 publication Critical patent/JPS6220606B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To increase the high-density recording performance, by forming the magnetic substance film which has an ample eddy current effect to the magnetic flux change in the vertical direction to the action gap fitting surface along with the low electric resistivity of the specific film thickness and a high magnetic flux density onto the above-mentioned gap fitting surface of the high electric resistor core of the magnetic head. CONSTITUTION:For the magnetic head which is used to the high coercive force magnetic tape for VTR or the like, high magnetic flux density magnetic substance 3 having a low electric resistivity is formed by the sputtering method or the like of the sendust or the like onto the action gap fitting surface of magnetic ferrite cores 1a and 1b having a high electric resistivity and forming the main magnetic path. Then the magnetic head is assembled with intervention of spacer 2 of the nonmagnetic substance such as the SiO2 film or the like. The thickness of film 3 is set to double the skin depth or less in order to prevent the lowering of the reproduction characteristics. At the same time, the recording performance is enhanced for the head with the concentration of the magnetic flux at the cap part and due to the eddy current effect.
JP7715979A 1979-06-19 1979-06-19 Magnetic head Granted JPS563424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7715979A JPS563424A (en) 1979-06-19 1979-06-19 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7715979A JPS563424A (en) 1979-06-19 1979-06-19 Magnetic head

Publications (2)

Publication Number Publication Date
JPS563424A true JPS563424A (en) 1981-01-14
JPS6220606B2 JPS6220606B2 (en) 1987-05-08

Family

ID=13626006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7715979A Granted JPS563424A (en) 1979-06-19 1979-06-19 Magnetic head

Country Status (1)

Country Link
JP (1) JPS563424A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108074A1 (en) * 1982-05-04 1984-05-16 EASTMAN KODAK COMPANY (a New Jersey corporation) Magnetic head having highly saturable gap liner
US7099121B2 (en) * 2002-06-06 2006-08-29 Seagate Technology Llc Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122649U (en) * 1974-08-09 1976-02-19
JPS5347811A (en) * 1976-10-12 1978-04-28 Matsushita Electric Ind Co Ltd Magnetic head
JPS5573918A (en) * 1978-11-27 1980-06-04 Sony Corp Magnetic head
JPS55157121A (en) * 1979-05-19 1980-12-06 Nippon Telegr & Teleph Corp <Ntt> Magnetic head core

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122649U (en) * 1974-08-09 1976-02-19
JPS5347811A (en) * 1976-10-12 1978-04-28 Matsushita Electric Ind Co Ltd Magnetic head
JPS5573918A (en) * 1978-11-27 1980-06-04 Sony Corp Magnetic head
JPS55157121A (en) * 1979-05-19 1980-12-06 Nippon Telegr & Teleph Corp <Ntt> Magnetic head core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108074A1 (en) * 1982-05-04 1984-05-16 EASTMAN KODAK COMPANY (a New Jersey corporation) Magnetic head having highly saturable gap liner
US7099121B2 (en) * 2002-06-06 2006-08-29 Seagate Technology Llc Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses

Also Published As

Publication number Publication date
JPS6220606B2 (en) 1987-05-08

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