JPS55150171A - Recording and reproducing device for information signal - Google Patents

Recording and reproducing device for information signal

Info

Publication number
JPS55150171A
JPS55150171A JP5895679A JP5895679A JPS55150171A JP S55150171 A JPS55150171 A JP S55150171A JP 5895679 A JP5895679 A JP 5895679A JP 5895679 A JP5895679 A JP 5895679A JP S55150171 A JPS55150171 A JP S55150171A
Authority
JP
Japan
Prior art keywords
revolution
pressure
slight gap
dynamic pressure
equal
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
JP5895679A
Other languages
Japanese (ja)
Other versions
JPS6259382B2 (en
Inventor
Toshiyasu Nakayuki
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 JP5895679A priority Critical patent/JPS55150171A/en
Publication of JPS55150171A publication Critical patent/JPS55150171A/en
Publication of JPS6259382B2 publication Critical patent/JPS6259382B2/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing

Abstract

PURPOSE:To prolong life by leassening the abrasion of a body of revolution by forming a spiral grooves at fixed intervals in the circumferential direction while keeping a slight gap between the body of revolution and a stable plate corresponding to the reverse surface of the body of revolution. CONSTITUTION:Through the turning of body 1 of revolution, air staying in slight gap 3 has negative dynamic pressure by centrifugal force and position dynamic pressure through the viscous pump effect of spiral groove 12. The negative dynamic pressure can be made less than or equal to the positive dynamic pressure by selecting the number of spiral grooves 12, the formation angle of them and the depth of them, and at land part 13, both pressures are equal. According to pressure distribution in slight gap 3, body 1 of revolution, therefore, has pressure equal to circumferential pressure at the outermost circumference and greater than it at its internal circumference and the greatest pressure at the land part of the innermost circumference. Thus, body 1 of revolution can be prevented from deforming by pressure generated in slight gap 3 and the deformation state of body 1 can be determined as you desire.
JP5895679A 1979-05-11 1979-05-11 Recording and reproducing device for information signal Granted JPS55150171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5895679A JPS55150171A (en) 1979-05-11 1979-05-11 Recording and reproducing device for information signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5895679A JPS55150171A (en) 1979-05-11 1979-05-11 Recording and reproducing device for information signal

Publications (2)

Publication Number Publication Date
JPS55150171A true JPS55150171A (en) 1980-11-21
JPS6259382B2 JPS6259382B2 (en) 1987-12-10

Family

ID=13099282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5895679A Granted JPS55150171A (en) 1979-05-11 1979-05-11 Recording and reproducing device for information signal

Country Status (1)

Country Link
JP (1) JPS55150171A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180962A (en) * 1985-12-28 1986-08-13 Sony Corp Rotary sheet guiding device
JP2006024352A (en) * 2004-07-05 2006-01-26 Samsung Electronics Co Ltd Hard disk drive
JP2010250912A (en) * 2009-04-17 2010-11-04 Alphana Technology Co Ltd Disk drive device
JP2013020674A (en) * 2011-07-11 2013-01-31 Nippon Hoso Kyokai <Nhk> Disk device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180962A (en) * 1985-12-28 1986-08-13 Sony Corp Rotary sheet guiding device
JPS635823B2 (en) * 1985-12-28 1988-02-05 Sony Corp
JP2006024352A (en) * 2004-07-05 2006-01-26 Samsung Electronics Co Ltd Hard disk drive
JP2010250912A (en) * 2009-04-17 2010-11-04 Alphana Technology Co Ltd Disk drive device
JP2013020674A (en) * 2011-07-11 2013-01-31 Nippon Hoso Kyokai <Nhk> Disk device

Also Published As

Publication number Publication date
JPS6259382B2 (en) 1987-12-10

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