KR850003462A - 폴리메틸메타크릴레이트로부터제조된디스크 - Google Patents

폴리메틸메타크릴레이트로부터제조된디스크

Info

Publication number
KR850003462A
KR850003462A KR1019840000006A KR840000006A KR850003462A KR 850003462 A KR850003462 A KR 850003462A KR 1019840000006 A KR1019840000006 A KR 1019840000006A KR 840000006 A KR840000006 A KR 840000006A KR 850003462 A KR850003462 A KR 850003462A
Authority
KR
South Korea
Prior art keywords
polymethyl methacrylate
discs made
discs
polymethyl
methacrylate
Prior art date
Application number
KR1019840000006A
Other languages
English (en)
Other versions
KR900004894B1 (ko
Inventor
아아르 호오므즈 존
Original Assignee
디스커비젼 어소시에이츠
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 디스커비젼 어소시에이츠 filed Critical 디스커비젼 어소시에이츠
Priority to KR1019840000006A priority Critical patent/KR900004894B1/ko
Publication of KR850003462A publication Critical patent/KR850003462A/ko
Application granted granted Critical
Publication of KR900004894B1 publication Critical patent/KR900004894B1/ko

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Optical Record Carriers (AREA)
KR1019840000006A 1980-02-01 1984-01-04 폴리메틸메타크릴레이트로부터제조된디스크 KR900004894B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019840000006A KR900004894B1 (ko) 1980-02-01 1984-01-04 폴리메틸메타크릴레이트로부터제조된디스크

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019800000396A KR840000978B1 (ko) 1980-02-01 1980-02-01 비데오디스크제조
KR1019840000006A KR900004894B1 (ko) 1980-02-01 1984-01-04 폴리메틸메타크릴레이트로부터제조된디스크

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
KR1019800000396A Division KR840000978B1 (ko) 1980-02-01 1980-02-01 비데오디스크제조

Publications (2)

Publication Number Publication Date
KR850003462A true KR850003462A (ko) 1985-06-17
KR900004894B1 KR900004894B1 (ko) 1990-07-09

Family

ID=19215402

Family Applications (2)

Application Number Title Priority Date Filing Date
KR1019800000396A KR840000978B1 (ko) 1980-02-01 1980-02-01 비데오디스크제조
KR1019840000006A KR900004894B1 (ko) 1980-02-01 1984-01-04 폴리메틸메타크릴레이트로부터제조된디스크

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR1019800000396A KR840000978B1 (ko) 1980-02-01 1980-02-01 비데오디스크제조

Country Status (1)

Country Link
KR (2) KR840000978B1 (ko)

Also Published As

Publication number Publication date
KR840000978B1 (ko) 1984-07-02
KR900004894B1 (ko) 1990-07-09

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