JPS5629806A - Record player for fixing recording disc by negative pressure - Google Patents

Record player for fixing recording disc by negative pressure

Info

Publication number
JPS5629806A
JPS5629806A JP10181479A JP10181479A JPS5629806A JP S5629806 A JPS5629806 A JP S5629806A JP 10181479 A JP10181479 A JP 10181479A JP 10181479 A JP10181479 A JP 10181479A JP S5629806 A JPS5629806 A JP S5629806A
Authority
JP
Japan
Prior art keywords
negative pressure
record disc
turntable
recording disc
record player
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
JP10181479A
Other languages
Japanese (ja)
Inventor
Hideyo Oka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP10181479A priority Critical patent/JPS5629806A/en
Publication of JPS5629806A publication Critical patent/JPS5629806A/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/022—Positioning or locking of single discs
    • G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/0282—Positioning or locking of single discs of discs rotating during transducing operation by means provided on the turntable
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G11B19/2018—Incorporating means for passive damping of vibration, either in the turntable, motor or mounting

Abstract

PURPOSE:To prevent the oscillation of record disc on the turntable, by keeping the gap between the record disc and the turntable at a negative pressure. CONSTITUTION:The gap 3 between the turntable 1 and the record disc 2 is connected to the vacuum pump 7 via the groove 4 cut on the table 1, pipe 5 and hollow shaft 6, and when the record disc 2 is placed on the table 1, the air in the air chamber 8 is excluded with the pump 7 and the air pressure in the gap 3 is kept negative in comparison with the atmosphere 10. A negative pressure of about 1/200atm. is sufficient enough for the purpose and the oscillation of the record disc 2 as well as the slip between the record disc 2 and the turntable 1 can be prevented.
JP10181479A 1979-08-11 1979-08-11 Record player for fixing recording disc by negative pressure Pending JPS5629806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10181479A JPS5629806A (en) 1979-08-11 1979-08-11 Record player for fixing recording disc by negative pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10181479A JPS5629806A (en) 1979-08-11 1979-08-11 Record player for fixing recording disc by negative pressure

Publications (1)

Publication Number Publication Date
JPS5629806A true JPS5629806A (en) 1981-03-25

Family

ID=14310588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10181479A Pending JPS5629806A (en) 1979-08-11 1979-08-11 Record player for fixing recording disc by negative pressure

Country Status (1)

Country Link
JP (1) JPS5629806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081001A1 (en) * 1981-12-04 1983-06-15 Lux Corporation Record player

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608909A (en) * 1969-11-03 1971-09-28 Jacob Rabinow Record-flattening turntable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608909A (en) * 1969-11-03 1971-09-28 Jacob Rabinow Record-flattening turntable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081001A1 (en) * 1981-12-04 1983-06-15 Lux Corporation Record player

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