JPS5573918A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS5573918A
JPS5573918A JP14633978A JP14633978A JPS5573918A JP S5573918 A JPS5573918 A JP S5573918A JP 14633978 A JP14633978 A JP 14633978A JP 14633978 A JP14633978 A JP 14633978A JP S5573918 A JPS5573918 A JP S5573918A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic material
approximate
metal
clearances
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
JP14633978A
Other languages
Japanese (ja)
Other versions
JPS6243251B2 (en
Inventor
Eisuke Miyairi
Kietsu Iwabuchi
Nobuhiro Terada
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP14633978A priority Critical patent/JPS5573918A/en
Publication of JPS5573918A publication Critical patent/JPS5573918A/en
Publication of JPS6243251B2 publication Critical patent/JPS6243251B2/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

Abstract

PURPOSE:To prevent the temperature of a head in long-term use form increasing to excess by evading the genration of an in-use eddy current by forming a slit on a metal magnetic material of high saturated-magnetic-flux density arranged on the flank of the magnetic clearance of a magnetic core. CONSTITUTION:A magnetic head consists of cores 1A, 1B and 1C made of ferrite of high permeablility and metal magnetic material 2 forming magnetic clearances (g1) and (g2), and metal magnetic material 2 should be approximate 0.5-30mu in thickness, approximate 5000G or more in saturated magnetic flux density and approximate 5000 or more in permeability (e.g. PC Permalloy); and notch groove 3 is made in the above-mentioned magnetic material 2 in the depth direction of magnetic clearances (g1) and (g2) and magnetic material 2 is divided into beltlike parts 2a to obtain magnetic heads. It is recommened that width (d) of the above-mentioned beltlike part 2a is about twice a skin depth.
JP14633978A 1978-11-27 1978-11-27 Magnetic head Granted JPS5573918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14633978A JPS5573918A (en) 1978-11-27 1978-11-27 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14633978A JPS5573918A (en) 1978-11-27 1978-11-27 Magnetic head

Publications (2)

Publication Number Publication Date
JPS5573918A true JPS5573918A (en) 1980-06-04
JPS6243251B2 JPS6243251B2 (en) 1987-09-12

Family

ID=15405450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14633978A Granted JPS5573918A (en) 1978-11-27 1978-11-27 Magnetic head

Country Status (1)

Country Link
JP (1) JPS5573918A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563424A (en) * 1979-06-19 1981-01-14 Hitachi Ltd Magnetic head
JPS587223U (en) * 1981-07-01 1983-01-18 パイオニア株式会社 erase head
JPS58105422A (en) * 1981-12-17 1983-06-23 Sony Corp Magnetic head
JPS5922213A (en) * 1982-07-27 1984-02-04 Nec Home Electronics Ltd Magnetic head
JPS6018808A (en) * 1984-06-12 1985-01-30 Matsushita Electric Ind Co Ltd Magnetic head

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563424A (en) * 1979-06-19 1981-01-14 Hitachi Ltd Magnetic head
JPS6220606B2 (en) * 1979-06-19 1987-05-08 Hitachi Ltd
JPS587223U (en) * 1981-07-01 1983-01-18 パイオニア株式会社 erase head
JPS58105422A (en) * 1981-12-17 1983-06-23 Sony Corp Magnetic head
JPH047009B2 (en) * 1981-12-17 1992-02-07 Sony Corp
JPS5922213A (en) * 1982-07-27 1984-02-04 Nec Home Electronics Ltd Magnetic head
JPS6018808A (en) * 1984-06-12 1985-01-30 Matsushita Electric Ind Co Ltd Magnetic head

Also Published As

Publication number Publication date
JPS6243251B2 (en) 1987-09-12

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