JPS5634A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5634A
JPS5634A JP7339079A JP7339079A JPS5634A JP S5634 A JPS5634 A JP S5634A JP 7339079 A JP7339079 A JP 7339079A JP 7339079 A JP7339079 A JP 7339079A JP S5634 A JPS5634 A JP S5634A
Authority
JP
Japan
Prior art keywords
magnetic
layer
recording medium
high permeability
magnetic 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.)
Pending
Application number
JP7339079A
Other languages
Japanese (ja)
Inventor
Mitsuaki Ooshima
Masaru Neichi
Ryoichi Wada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7339079A priority Critical patent/JPS5634A/en
Publication of JPS5634A publication Critical patent/JPS5634A/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
    • 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
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0026—Pulse recording
    • G11B2005/0029—Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/488—Disposition of heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To enable to record and reproduce in high output for vertical magnetizing recording signal, by providing the high permeability part on the magnetic recording medium such as magnetic tape and magnetic disc to form the closed magnetic path of magnetic head-recording medium-high permeability section.
CONSTITUTION: The magnetic recording medium 3 such as magnetic tape, magnetic disc, and magnetic drum is constituted with the three layer construction of the magnetic layer 4 made of high coercive force magnetic material such as iron oxide, high permeability layer 5 made of high permeability and low coercive force material such as permalloy, and support layer for support. Further, when the magnetic head core 1 of U-shaped type made of high permeability material is located near the magnetic recording medium 3, the closed magnetic path having the direction of arrows 8, 10, 9, 11 through the magnetic head 1-magnetic layer 4-high permeability layer 5 is formed. Thus, the leakage magnetic flux is less, high magnetic flux is obtained in the magnetic head, and sufficient output can be obtained even with increased line density.
COPYRIGHT: (C)1981,JPO&Japio
JP7339079A 1979-06-11 1979-06-11 Magnetic recording medium Pending JPS5634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7339079A JPS5634A (en) 1979-06-11 1979-06-11 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7339079A JPS5634A (en) 1979-06-11 1979-06-11 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5634A true JPS5634A (en) 1981-01-06

Family

ID=13516811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7339079A Pending JPS5634A (en) 1979-06-11 1979-06-11 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5634A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107727A (en) * 1983-11-15 1985-06-13 Matsushita Electric Ind Co Ltd Magnetic recording medium
EP0461907A2 (en) * 1990-06-13 1991-12-18 Sharp Kabushiki Kaisha Magneto-optical recording/reproducing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107727A (en) * 1983-11-15 1985-06-13 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPH0517607B2 (en) * 1983-11-15 1993-03-09 Matsushita Electric Ind Co Ltd
EP0461907A2 (en) * 1990-06-13 1991-12-18 Sharp Kabushiki Kaisha Magneto-optical recording/reproducing device
US5325344A (en) * 1990-06-13 1994-06-28 Sharp Kabushiki Kaisha Magneto-optical recording and reproducing device having integrally formed recording and reproducing magnetic heads
EP0827143A2 (en) * 1990-06-13 1998-03-04 Sharp Kabushiki Kaisha Magneto-optical recording/reproducing device
EP0827143A3 (en) * 1990-06-13 2000-01-19 Sharp Kabushiki Kaisha Magneto-optical recording/reproducing device

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