JPS5469412A - Head positioning mechanism - Google Patents

Head positioning mechanism

Info

Publication number
JPS5469412A
JPS5469412A JP13620277A JP13620277A JPS5469412A JP S5469412 A JPS5469412 A JP S5469412A JP 13620277 A JP13620277 A JP 13620277A JP 13620277 A JP13620277 A JP 13620277A JP S5469412 A JPS5469412 A JP S5469412A
Authority
JP
Japan
Prior art keywords
carriage
clearance
rail
heads
fluids
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
JP13620277A
Other languages
Japanese (ja)
Other versions
JPS5827898B2 (en
Inventor
Reizo Kaneko
Kenichi Tomita
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP13620277A priority Critical patent/JPS5827898B2/en
Publication of JPS5469412A publication Critical patent/JPS5469412A/en
Publication of JPS5827898B2 publication Critical patent/JPS5827898B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads

Landscapes

  • Fluid-Damping Devices (AREA)
  • Moving Of Heads (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE:To rapidly attenuate the vibrations produced in carriage by filling magnetic fluids in the clearance between the carriage provided with heads and the fixing part. CONSTITUTION:A carriage 11 which is provided with heads 1... is supported by rolling bearings 3... and is moved in tracking positions along a stationary guide rail 13 by way of an actuator. Magnetic fluids 15, 15 which are prevented from flowing to the outside of the clearance by being attracted by permanent magnets 14, 14 buried in the rail 13 are filled in the narrow clearance between the top surface of the rail 13 and the opposing surface of the carriage 11. Hence, if the gravity during travel causes a change in the clearance between the carriage 11 and rail 13, the fluids 15, 15 are forced out or drawn in and this produces squeeze-out effect owing to viscosity, giving the attenuation force corresponding to the clearance changing speed to the carriage 11 and letting the vibrations attenuate rapidly. As a result, rapid and sure head tracking is effected.
JP13620277A 1977-11-15 1977-11-15 Head positioning mechanism Expired JPS5827898B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13620277A JPS5827898B2 (en) 1977-11-15 1977-11-15 Head positioning mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13620277A JPS5827898B2 (en) 1977-11-15 1977-11-15 Head positioning mechanism

Publications (2)

Publication Number Publication Date
JPS5469412A true JPS5469412A (en) 1979-06-04
JPS5827898B2 JPS5827898B2 (en) 1983-06-13

Family

ID=15169711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13620277A Expired JPS5827898B2 (en) 1977-11-15 1977-11-15 Head positioning mechanism

Country Status (1)

Country Link
JP (1) JPS5827898B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580849A1 (en) * 1985-04-22 1986-10-24 Philips Nv SWIVEL ARRAY DEVICE FOR AN EXPLORATION UNIT FOR RECORDING AND / OR READING INFORMATION IN A DISK-SHAPED INFORMATION MEDIUM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580849A1 (en) * 1985-04-22 1986-10-24 Philips Nv SWIVEL ARRAY DEVICE FOR AN EXPLORATION UNIT FOR RECORDING AND / OR READING INFORMATION IN A DISK-SHAPED INFORMATION MEDIUM

Also Published As

Publication number Publication date
JPS5827898B2 (en) 1983-06-13

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