JPS5766509A - Rubber sheet for turntable - Google Patents

Rubber sheet for turntable

Info

Publication number
JPS5766509A
JPS5766509A JP14341880A JP14341880A JPS5766509A JP S5766509 A JPS5766509 A JP S5766509A JP 14341880 A JP14341880 A JP 14341880A JP 14341880 A JP14341880 A JP 14341880A JP S5766509 A JPS5766509 A JP S5766509A
Authority
JP
Japan
Prior art keywords
rubber
polynorbornane
500pts
except
durometer
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
JP14341880A
Other languages
Japanese (ja)
Inventor
Shutaro Nakahira
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.)
HOUYUU GOMME KK
HOUYUU GOMU KK
Original Assignee
HOUYUU GOMME KK
HOUYUU GOMU KK
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 HOUYUU GOMME KK, HOUYUU GOMU KK filed Critical HOUYUU GOMME KK
Priority to JP14341880A priority Critical patent/JPS5766509A/en
Priority to US06/285,102 priority patent/US4370371A/en
Priority to DE19803049878 priority patent/DE3049878A1/en
Priority to EP19800902182 priority patent/EP0041072B1/en
Priority to PCT/JP1980/000282 priority patent/WO1981001481A1/en
Priority to NL8020426A priority patent/NL8020426A/en
Priority to AU65722/80A priority patent/AU532870B2/en
Priority to KR1019800004812A priority patent/KR830001562B1/en
Priority to GB8110983A priority patent/GB2074778B/en
Priority to CA000377415A priority patent/CA1163569A/en
Priority to IT21767/81A priority patent/IT1135835B/en
Publication of JPS5766509A publication Critical patent/JPS5766509A/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
    • 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

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To prevent playback sound quality from deteriorating by providing a vulcanized rubber, which does not contain any polynorbornane, with specific hardness and rebound elasticity. CONSTITUTION:A discoidal sheet, having <=30 deg., preferably, <=20 deg. hardness by an A type rubber durometer or >=15 deg., prefeably, >=30 deg. by an F type durometer and >=40%, preferably, 60-95% rebound elasticity, of vulcanized moldings of a rubber composite (except one containing polynorbornane as a rubber component) is used. For the said rubber sheet, the rubber composite consisting of a 100pts.wt. rubber component (except polynorbornane), 5-1,500pts.wt. factice, and a 20-1,500pts.wt. softening agent is favorably used. As the rubber component, there are natural rubber, isoprene rubber, styrene-butadiene rubber, chlorosulfonated ethylene, etc.
JP14341880A 1979-11-20 1980-10-13 Rubber sheet for turntable Pending JPS5766509A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP14341880A JPS5766509A (en) 1980-10-13 1980-10-13 Rubber sheet for turntable
US06/285,102 US4370371A (en) 1979-11-20 1980-11-18 Rubber disc for a record player turntable
DE19803049878 DE3049878A1 (en) 1979-11-20 1980-11-18 RUBBER SHEET FOR TURNTABLE
EP19800902182 EP0041072B1 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
PCT/JP1980/000282 WO1981001481A1 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
NL8020426A NL8020426A (en) 1979-11-20 1980-11-18 RUBBERVEL FOR A TURNTABLE.
AU65722/80A AU532870B2 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
KR1019800004812A KR830001562B1 (en) 1980-10-13 1980-12-17 Rubber Sheet for Turntables
GB8110983A GB2074778B (en) 1979-11-20 1981-04-08 Rubber sheet for turntable
CA000377415A CA1163569A (en) 1980-10-13 1981-05-12 Rubber sheet for turntable
IT21767/81A IT1135835B (en) 1980-10-13 1981-05-18 Rubber sheet for record player turntable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14341880A JPS5766509A (en) 1980-10-13 1980-10-13 Rubber sheet for turntable

Publications (1)

Publication Number Publication Date
JPS5766509A true JPS5766509A (en) 1982-04-22

Family

ID=15338287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14341880A Pending JPS5766509A (en) 1979-11-20 1980-10-13 Rubber sheet for turntable

Country Status (1)

Country Link
JP (1) JPS5766509A (en)

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