JPS55163813A - Magnetic circuit - Google Patents

Magnetic circuit

Info

Publication number
JPS55163813A
JPS55163813A JP7189779A JP7189779A JPS55163813A JP S55163813 A JPS55163813 A JP S55163813A JP 7189779 A JP7189779 A JP 7189779A JP 7189779 A JP7189779 A JP 7189779A JP S55163813 A JPS55163813 A JP S55163813A
Authority
JP
Japan
Prior art keywords
magnetic
leakage flux
coils
magnet
voice coil
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
JP7189779A
Other languages
Japanese (ja)
Inventor
Yoshibumi Mizoshita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7189779A priority Critical patent/JPS55163813A/en
Publication of JPS55163813A publication Critical patent/JPS55163813A/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
    • G11B5/48—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
    • G11B5/54—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 with provision for moving the head into or out of its operative position or across tracks

Landscapes

  • Moving Of Heads (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE:To diminish the leakage flux of a voice coil motor used to drive a magnetic head by a method wherein magnets are prepared between a magnetic circuit and surrpounding metals. CONSTITUTION:A voice coil motor is consituted of a magnet 2, magnetic poles 3, yokes 7, 8 and coils 4 wound around movable elements 9. By arranging leakage flux diminsihing magnets formed with ferrite, etc., magnetic flux generated by the magnet 2 passes almost through the magnetic poles 3 and the coils 4. Therefore the leakage flux is diminished and the motor can be made to miniaturized and have a light weight.
JP7189779A 1979-06-08 1979-06-08 Magnetic circuit Pending JPS55163813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7189779A JPS55163813A (en) 1979-06-08 1979-06-08 Magnetic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7189779A JPS55163813A (en) 1979-06-08 1979-06-08 Magnetic circuit

Publications (1)

Publication Number Publication Date
JPS55163813A true JPS55163813A (en) 1980-12-20

Family

ID=13473775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7189779A Pending JPS55163813A (en) 1979-06-08 1979-06-08 Magnetic circuit

Country Status (1)

Country Link
JP (1) JPS55163813A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60135074U (en) * 1984-02-16 1985-09-07 ティーディーケイ株式会社 linear motor
JPS61147766A (en) * 1984-12-20 1986-07-05 Sumitomo Special Metals Co Ltd Voice coil type linear motor
JPS62115778U (en) * 1986-01-13 1987-07-23
JPS62173968A (en) * 1986-01-28 1987-07-30 Sumitomo Special Metals Co Ltd Voice coil motor
JPS62152674U (en) * 1986-03-19 1987-09-28
JPH02101683A (en) * 1988-10-11 1990-04-13 Fuji Xerox Co Ltd Information recording and reproducing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60135074U (en) * 1984-02-16 1985-09-07 ティーディーケイ株式会社 linear motor
JPS61147766A (en) * 1984-12-20 1986-07-05 Sumitomo Special Metals Co Ltd Voice coil type linear motor
JPS62115778U (en) * 1986-01-13 1987-07-23
JPS62173968A (en) * 1986-01-28 1987-07-30 Sumitomo Special Metals Co Ltd Voice coil motor
JPS62152674U (en) * 1986-03-19 1987-09-28
JPH02101683A (en) * 1988-10-11 1990-04-13 Fuji Xerox Co Ltd Information recording and reproducing device

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