JPS57176549A - Disc type recording medium and its manufacture - Google Patents

Disc type recording medium and its manufacture

Info

Publication number
JPS57176549A
JPS57176549A JP56060217A JP6021781A JPS57176549A JP S57176549 A JPS57176549 A JP S57176549A JP 56060217 A JP56060217 A JP 56060217A JP 6021781 A JP6021781 A JP 6021781A JP S57176549 A JPS57176549 A JP S57176549A
Authority
JP
Japan
Prior art keywords
carbon black
vinyl chloride
dried
heated
raw material
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
JP56060217A
Other languages
English (en)
Japanese (ja)
Other versions
JPH024063B2 (cs
Inventor
Yoshio Enoki
Kazuhisa Morimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56060217A priority Critical patent/JPS57176549A/ja
Priority to GB8211134A priority patent/GB2098221B/en
Priority to US06/369,107 priority patent/US4472336A/en
Priority to FR8206672A priority patent/FR2504298B1/fr
Priority to DE19823214344 priority patent/DE3214344A1/de
Publication of JPS57176549A publication Critical patent/JPS57176549A/ja
Publication of JPH024063B2 publication Critical patent/JPH024063B2/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
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G11B9/061—Record carriers characterised by their structure or form or by the selection of the material; Apparatus or processes specially adapted for the manufacture of record carriers

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
JP56060217A 1981-04-17 1981-04-20 Disc type recording medium and its manufacture Granted JPS57176549A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56060217A JPS57176549A (en) 1981-04-20 1981-04-20 Disc type recording medium and its manufacture
GB8211134A GB2098221B (en) 1981-04-17 1982-04-16 Method of producing video discs
US06/369,107 US4472336A (en) 1981-04-17 1982-04-16 Method of manufacturing video disc
FR8206672A FR2504298B1 (fr) 1981-04-17 1982-04-19 Methode de fabrication de disques video
DE19823214344 DE3214344A1 (de) 1981-04-17 1982-04-19 Verfahren zur herstellung von videoplatten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56060217A JPS57176549A (en) 1981-04-20 1981-04-20 Disc type recording medium and its manufacture

Publications (2)

Publication Number Publication Date
JPS57176549A true JPS57176549A (en) 1982-10-29
JPH024063B2 JPH024063B2 (cs) 1990-01-25

Family

ID=13135769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56060217A Granted JPS57176549A (en) 1981-04-17 1981-04-20 Disc type recording medium and its manufacture

Country Status (1)

Country Link
JP (1) JPS57176549A (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03288067A (ja) * 1990-04-04 1991-12-18 Ketsuto & Ketsuto:Kk 金属ガスケット
JPH04191569A (ja) * 1990-11-27 1992-07-09 Nippon Riikuresu Kogyo Kk メタルガスケット

Also Published As

Publication number Publication date
JPH024063B2 (cs) 1990-01-25

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