AT376313B - DISC-SHAPED INFORMATION CARRIER MADE OF A PRESSABLE PLASTIC WITH FINE DISTRIBUTED, CONDUCTIVE PARTICLES FOR THE PLAYBACK OF SIGNALS WITH A PLAYING NEEDLE - Google Patents

DISC-SHAPED INFORMATION CARRIER MADE OF A PRESSABLE PLASTIC WITH FINE DISTRIBUTED, CONDUCTIVE PARTICLES FOR THE PLAYBACK OF SIGNALS WITH A PLAYING NEEDLE

Info

Publication number
AT376313B
AT376313B AT185378A AT185378A AT376313B AT 376313 B AT376313 B AT 376313B AT 185378 A AT185378 A AT 185378A AT 185378 A AT185378 A AT 185378A AT 376313 B AT376313 B AT 376313B
Authority
AT
Austria
Prior art keywords
playback
disc
signals
conductive particles
information carrier
Prior art date
Application number
AT185378A
Other languages
German (de)
Other versions
ATA185378A (en
Original Assignee
Rca Corp
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
Priority claimed from GB10824/77A external-priority patent/GB1574595A/en
Application filed by Rca Corp filed Critical Rca Corp
Publication of ATA185378A publication Critical patent/ATA185378A/en
Application granted granted Critical
Publication of AT376313B publication Critical patent/AT376313B/en

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
    • G11B9/063—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 characterised by the selection of the material
    • G11B9/068—Moulding resin compositions
AT185378A 1977-03-15 1978-03-15 DISC-SHAPED INFORMATION CARRIER MADE OF A PRESSABLE PLASTIC WITH FINE DISTRIBUTED, CONDUCTIVE PARTICLES FOR THE PLAYBACK OF SIGNALS WITH A PLAYING NEEDLE AT376313B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB10824/77A GB1574595A (en) 1977-03-15 1977-03-15 Video disc
US81827977A 1977-07-25 1977-07-25

Publications (2)

Publication Number Publication Date
ATA185378A ATA185378A (en) 1984-03-15
AT376313B true AT376313B (en) 1984-11-12

Family

ID=26247783

Family Applications (1)

Application Number Title Priority Date Filing Date
AT185378A AT376313B (en) 1977-03-15 1978-03-15 DISC-SHAPED INFORMATION CARRIER MADE OF A PRESSABLE PLASTIC WITH FINE DISTRIBUTED, CONDUCTIVE PARTICLES FOR THE PLAYBACK OF SIGNALS WITH A PLAYING NEEDLE

Country Status (3)

Country Link
AT (1) AT376313B (en)
DE (1) DE2810367C2 (en)
FR (1) FR2384313A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051166B2 (en) * 1977-03-28 1985-11-12 日本ビクター株式会社 Capacitive recording medium
US4241120A (en) * 1978-11-13 1980-12-23 Rca Corporation Video discs and molding compositions therefor
US4228050A (en) * 1979-01-15 1980-10-14 Rca Corporation Conductive molding composition
US4216970A (en) * 1979-03-05 1980-08-12 Rca Corporation Video disc lubricants
JPS5665342A (en) * 1979-10-29 1981-06-03 Victor Co Of Japan Ltd Electrostatic capacity type recording medium for information signal
US4472337A (en) * 1979-11-07 1984-09-18 Rca Corporation Video disc processing
US4383961A (en) * 1980-07-07 1983-05-17 Rca Corporation Drying process for video discs
US4472336A (en) * 1981-04-17 1984-09-18 Matsushita Electric Industrial Co., Ltd. Method of manufacturing video disc
EP0082994A1 (en) * 1981-12-24 1983-07-06 Diamond Shamrock Chemicals Company Flame retardant thermoplastic molding compositions of high electroconductivity
JPS59191152A (en) * 1983-04-14 1984-10-30 Victor Co Of Japan Ltd Recording medium for high density information signal
JPS60115036A (en) * 1983-11-26 1985-06-21 Victor Co Of Japan Ltd Electrostatic capacity type recording medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127230A5 (en) * 1971-03-01 1972-10-13 Pantasote Cy New York Polymers of vinyl monomers - contg finely divided carbon black
US3842194A (en) * 1971-03-22 1974-10-15 Rca Corp Information records and recording/playback systems therefor
US3909517A (en) * 1971-03-22 1975-09-30 Rca Corp Disc records with groove bottom depth variations
US3842217A (en) * 1971-03-22 1974-10-15 Rca Corp Record fabrication of a capacitive type storage medium

Also Published As

Publication number Publication date
ATA185378A (en) 1984-03-15
DE2810367A1 (en) 1978-09-21
DE2810367C2 (en) 1984-12-20
FR2384313A1 (en) 1978-10-13
FR2384313B1 (en) 1985-03-15

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties