JPS551611A - Megnetic recording and reproducing device - Google Patents

Megnetic recording and reproducing device

Info

Publication number
JPS551611A
JPS551611A JP7320678A JP7320678A JPS551611A JP S551611 A JPS551611 A JP S551611A JP 7320678 A JP7320678 A JP 7320678A JP 7320678 A JP7320678 A JP 7320678A JP S551611 A JPS551611 A JP S551611A
Authority
JP
Japan
Prior art keywords
reproducing
recording
magnetic pole
magnetic
vertical
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
JP7320678A
Other languages
Japanese (ja)
Inventor
Kuniaki Miura
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 JP7320678A priority Critical patent/JPS551611A/en
Publication of JPS551611A publication Critical patent/JPS551611A/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

Abstract

PURPOSE:To improve a recording efficiency and make low-speed reproducing, etc., possible by performing the vertical recording onto a magnetic layer by a closed magnetic path dependent upon a main magnetic pole and an auxiliary magnetic pole, which is connected oppositely to the main magnetic pole by high-permeability materials, and reproducing recorded data. CONSTITUTION:A closed magnetic path according to the recording current flowed to winding 9 is formed by main magnetic pole 6 and opposite large-area auxiliary magnetic pole 7 which are connected by high-permeability materials 8 such as ferrite, and the vertical recording dependent upon the polarity change of the magnetic layer of recording medium 1 is performed. By this vertical recoeding system, a high- density, high-S/N and high-efficient recording is performed; and simultaneously, when a magnetic resistance element is used, recorded data reproducing is performed by magnetic induction independently of the reproducing speed, and low- speed reproducing is possible. Further, if a Dc bias current is applied to widing 9, the linearity of reproducing signals is improved.
JP7320678A 1978-06-19 1978-06-19 Megnetic recording and reproducing device Pending JPS551611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7320678A JPS551611A (en) 1978-06-19 1978-06-19 Megnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7320678A JPS551611A (en) 1978-06-19 1978-06-19 Megnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS551611A true JPS551611A (en) 1980-01-08

Family

ID=13511436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7320678A Pending JPS551611A (en) 1978-06-19 1978-06-19 Megnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS551611A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033236A2 (en) * 1980-01-24 1981-08-05 Sperry Corporation Apparatus for perpendicular magnetic recording on a moving magnetic medium
JPS5723145A (en) * 1980-05-16 1982-02-06 Apple Computer Digital computer
JPS62235687A (en) * 1986-04-04 1987-10-15 Nec Corp Scroll displaying system for image data

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033236A2 (en) * 1980-01-24 1981-08-05 Sperry Corporation Apparatus for perpendicular magnetic recording on a moving magnetic medium
EP0033236A3 (en) * 1980-01-24 1982-03-10 Sperry Corporation Apparatus for perpendicular magnetic recording on a moving magnetic medium
JPS5723145A (en) * 1980-05-16 1982-02-06 Apple Computer Digital computer
JPS62235687A (en) * 1986-04-04 1987-10-15 Nec Corp Scroll displaying system for image data

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