JPS5766508A - Rubber sheet for turntable - Google Patents

Rubber sheet for turntable

Info

Publication number
JPS5766508A
JPS5766508A JP14341780A JP14341780A JPS5766508A JP S5766508 A JPS5766508 A JP S5766508A JP 14341780 A JP14341780 A JP 14341780A JP 14341780 A JP14341780 A JP 14341780A JP S5766508 A JPS5766508 A JP S5766508A
Authority
JP
Japan
Prior art keywords
rubber
polynorbornane
sheet
turntable
500pts
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
JP14341780A
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 JP14341780A priority Critical patent/JPS5766508A/en
Priority to EP19800902182 priority patent/EP0041072B1/en
Priority to AU65722/80A priority patent/AU532870B2/en
Priority to PCT/JP1980/000282 priority patent/WO1981001481A1/en
Priority to NL8020426A priority patent/NL8020426A/en
Priority to DE19803049878 priority patent/DE3049878A1/en
Priority to US06/285,102 priority patent/US4370371A/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
Priority to BE0/204825A priority patent/BE888856A/en
Publication of JPS5766508A publication Critical patent/JPS5766508A/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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/02—Vulcanised oils, e.g. factice

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: To prevent playback sound quality from deteriorating by providing a vulcanized rubber, consisting essentially of polynorbornane, with specific hardness and rebound elasticity.
CONSTITUTION: A discoidal sheet, having 15W30° hardness (by A type rubber durometer) and ≥50%, preferably, 60W95% rebound elasticity, of vulcanized moldings of a rubber composite containing polynorbornane essentially as a rubber component is used. As the said rubber composite, a rubber composite consisting of a 100pts.wt. rubber component consisting essentially of polynorbornane, 1W 51,500pts.wt. factice, and a 20W1,500pts.wt. softening agent is favorably used. As the rubber component, polynorbonane only or a mixture of it and natural or synthetic rubber is used. The favorable shape of the rubber sheet for a turntable is that having many projections on one surface of the discoidal rubber sheet.
COPYRIGHT: (C)1982,JPO&Japio
JP14341780A 1979-11-20 1980-10-13 Rubber sheet for turntable Pending JPS5766508A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
JP14341780A JPS5766508A (en) 1980-10-13 1980-10-13 Rubber sheet for turntable
EP19800902182 EP0041072B1 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
AU65722/80A AU532870B2 (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.
DE19803049878 DE3049878A1 (en) 1979-11-20 1980-11-18 RUBBER SHEET FOR TURNTABLE
US06/285,102 US4370371A (en) 1979-11-20 1980-11-18 Rubber disc for a record player 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
BE0/204825A BE888856A (en) 1980-10-13 1981-05-19 RUBBER SHEETS FOR TURNTABLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14341780A JPS5766508A (en) 1980-10-13 1980-10-13 Rubber sheet for turntable

Publications (1)

Publication Number Publication Date
JPS5766508A true JPS5766508A (en) 1982-04-22

Family

ID=15338266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14341780A Pending JPS5766508A (en) 1979-11-20 1980-10-13 Rubber sheet for turntable

Country Status (2)

Country Link
JP (1) JPS5766508A (en)
BE (1) BE888856A (en)

Also Published As

Publication number Publication date
BE888856A (en) 1981-09-16

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