JPS56159867A - Magnetic disk memory device - Google Patents

Magnetic disk memory device

Info

Publication number
JPS56159867A
JPS56159867A JP6436080A JP6436080A JPS56159867A JP S56159867 A JPS56159867 A JP S56159867A JP 6436080 A JP6436080 A JP 6436080A JP 6436080 A JP6436080 A JP 6436080A JP S56159867 A JPS56159867 A JP S56159867A
Authority
JP
Japan
Prior art keywords
capstan
disk
head
carriage
thermal expansion
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
JP6436080A
Other languages
Japanese (ja)
Other versions
JPS6143780B2 (en
Inventor
Tsunehiro Imamura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6436080A priority Critical patent/JPS56159867A/en
Publication of JPS56159867A publication Critical patent/JPS56159867A/en
Publication of JPS6143780B2 publication Critical patent/JPS6143780B2/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
    • G11B5/48—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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks

Landscapes

  • Moving Of Heads (AREA)

Abstract

PURPOSE:To decrease an error due to a temperature for locating the magnetic head, by forming a capstan for moving the head through a bunt or a carriage, etc. by use of a material whose coefficient of thermal expansion is same as that of the magnetic disk. CONSTITUTION:A head 3 provided on a carriage 4 is moved to the position corresponding to the angle of rotation theta of a capstan 6 through a bunt 5 and a carriage 4 which are fixed to the capstan 6 by a pin 7. When a temperature is varied by DELTAt degrees against the same angle of rotation theta of this capstan, a position 32 of the head 3 against the disk 1 is shifted by the shift amount epsilon based on the equation (1). (X1 and X2 show distances from the center of the disk 1 to the limit point of the range where the magnetic head reaches; alpha and beta show the coefficients of thermal expansion of the disk 1 and the capstan 6). Accordingly, when the capstan 6 is formed by use of a material whose coefficient of thermal expansion is same as that of the disk 1, the shift amount epsilon becomes ''0'', and a head locating error due to a temperature does not occur.
JP6436080A 1980-05-15 1980-05-15 Magnetic disk memory device Granted JPS56159867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6436080A JPS56159867A (en) 1980-05-15 1980-05-15 Magnetic disk memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6436080A JPS56159867A (en) 1980-05-15 1980-05-15 Magnetic disk memory device

Publications (2)

Publication Number Publication Date
JPS56159867A true JPS56159867A (en) 1981-12-09
JPS6143780B2 JPS6143780B2 (en) 1986-09-30

Family

ID=13256008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6436080A Granted JPS56159867A (en) 1980-05-15 1980-05-15 Magnetic disk memory device

Country Status (1)

Country Link
JP (1) JPS56159867A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172572A (en) * 1981-04-15 1982-10-23 Fujitsu Ltd Open loop type disk device
US4959740A (en) * 1983-11-18 1990-09-25 Canon Denshi Kabushiki Kaisha Disc recording and/or reproducing apparatus including means for minimizing the effects of temperature changes
US5319510A (en) * 1983-11-18 1994-06-07 Canon Denshi Kabushiki Kaisha Disc recording and/or reproducing apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4878916A (en) * 1972-01-24 1973-10-23
JPS5211912A (en) * 1975-07-18 1977-01-29 Hitachi Ltd Magnetic head position settlement apparatus
JPS53123911A (en) * 1977-04-05 1978-10-28 Shugart Associates Positioning mechanism for reading*writing head of recorder reproducer employing magnetic record disc
JPS54113312A (en) * 1978-02-24 1979-09-04 Fujitsu Ltd Magnetic disc device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4878916A (en) * 1972-01-24 1973-10-23
JPS5211912A (en) * 1975-07-18 1977-01-29 Hitachi Ltd Magnetic head position settlement apparatus
JPS53123911A (en) * 1977-04-05 1978-10-28 Shugart Associates Positioning mechanism for reading*writing head of recorder reproducer employing magnetic record disc
JPS54113312A (en) * 1978-02-24 1979-09-04 Fujitsu Ltd Magnetic disc device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172572A (en) * 1981-04-15 1982-10-23 Fujitsu Ltd Open loop type disk device
JPS6255226B2 (en) * 1981-04-15 1987-11-18 Fujitsu Ltd
US4959740A (en) * 1983-11-18 1990-09-25 Canon Denshi Kabushiki Kaisha Disc recording and/or reproducing apparatus including means for minimizing the effects of temperature changes
US5319510A (en) * 1983-11-18 1994-06-07 Canon Denshi Kabushiki Kaisha Disc recording and/or reproducing apparatus

Also Published As

Publication number Publication date
JPS6143780B2 (en) 1986-09-30

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