JPS55117729A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS55117729A
JPS55117729A JP2579379A JP2579379A JPS55117729A JP S55117729 A JPS55117729 A JP S55117729A JP 2579379 A JP2579379 A JP 2579379A JP 2579379 A JP2579379 A JP 2579379A JP S55117729 A JPS55117729 A JP S55117729A
Authority
JP
Japan
Prior art keywords
magnetic
recording
magnetic field
magnetic pole
medium
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
JP2579379A
Other languages
Japanese (ja)
Inventor
Fukashi Kobayashi
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 JP2579379A priority Critical patent/JPS55117729A/en
Publication of JPS55117729A publication Critical patent/JPS55117729A/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 enable both recording and reproducing functions of a magnetic head using a vertical recording system by connecting a ferromagnetic substance plate to an electrostrictive material and also by arranging a magnetic pole, obtained by providing an electrode to the electromagnetic material, in a magnetic field induced by a DC magnetic-field generator. CONSTITUTION:Electrostrictive material layers 6 and 7 contract by a signal voltage applied between terminals 10 and 11, and consequently reverse magnetic strain acts on ferromagnetic thin plate 5 to change magnetic permeability greatly. Exciting coil 18 of auxiliary magnetic pole 16 is applied with a direct current, and main magnetic pole 15 with an even DC magnetic field. Since the magnetic permeability of thin plate 5 changes greatly, vertical magnetic field intensity at its flank changes correspondingly, so that recording on medium 3 will be possible. To reproduce signals recorded on medium 3, the same operations as the recording are performed backward and the principle is completely the same.
JP2579379A 1979-03-05 1979-03-05 Magnetic head Pending JPS55117729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2579379A JPS55117729A (en) 1979-03-05 1979-03-05 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2579379A JPS55117729A (en) 1979-03-05 1979-03-05 Magnetic head

Publications (1)

Publication Number Publication Date
JPS55117729A true JPS55117729A (en) 1980-09-10

Family

ID=12175705

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2579379A Pending JPS55117729A (en) 1979-03-05 1979-03-05 Magnetic head

Country Status (1)

Country Link
JP (1) JPS55117729A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103352A2 (en) * 1982-07-14 1984-03-21 Minnesota Mining And Manufacturing Company Magnetic sensor, particularly playback head for magnetic recording media
JP2007095676A (en) * 2005-09-16 2007-04-12 Cherry Gmbh Electrical switch
JP2009004175A (en) * 2007-06-20 2009-01-08 Alps Electric Co Ltd Push-button switch device with lever

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131307A (en) * 1975-05-10 1976-11-15 Matsushita Electric Ind Co Ltd Tape recorder recording method
JPS5288317A (en) * 1976-01-20 1977-07-23 Nec Corp Magnetic head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131307A (en) * 1975-05-10 1976-11-15 Matsushita Electric Ind Co Ltd Tape recorder recording method
JPS5288317A (en) * 1976-01-20 1977-07-23 Nec Corp Magnetic head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103352A2 (en) * 1982-07-14 1984-03-21 Minnesota Mining And Manufacturing Company Magnetic sensor, particularly playback head for magnetic recording media
JP2007095676A (en) * 2005-09-16 2007-04-12 Cherry Gmbh Electrical switch
JP2009004175A (en) * 2007-06-20 2009-01-08 Alps Electric Co Ltd Push-button switch device with lever

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