ES487660A1 - Perfeccionamientos en grabaciones de informacion de video - Google Patents

Perfeccionamientos en grabaciones de informacion de video

Info

Publication number
ES487660A1
ES487660A1 ES487660A ES487660A ES487660A1 ES 487660 A1 ES487660 A1 ES 487660A1 ES 487660 A ES487660 A ES 487660A ES 487660 A ES487660 A ES 487660A ES 487660 A1 ES487660 A1 ES 487660A1
Authority
ES
Spain
Prior art keywords
percent
weight
molding composition
composition
video discs
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.)
Expired
Application number
ES487660A
Other languages
English (en)
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.)
RCA Corp
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
Application filed by RCA Corp filed Critical RCA Corp
Publication of ES487660A1 publication Critical patent/ES487660A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • 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

Abstract

Perfeccionamientos en grabaciones de información de video del tipo destinadas a utilizarse con una aguja de reproducción para poder recuperar señales que ocupan una anchura de banda por lo menos varios MHZ cuando se establece un movimiento relativo a una velocidad deseada entre la grabación y la aguja, cuya grabación comprende un disco de un material de plástico que contiene partículas conductivas finamente divididas y que tiene una resistividad en masa por debajo de aproximadamente 500.o hm-cm a 900 MHZ, teniendo la grabación una pista o surco de información a una superficie, cuya pista o surco de información está constituida por una textura o modelo de relieve superficial de dimensiones apropiados para permitir la recuperación de señales de dichas anchura de banda al establecerse dicho movimiento a dicha velocidad, caracterizados porque como composición de moldeo se emplea una composición de moldeo conductiva que comprende partículas de negro de carbón conductivas; aproximadamente del 1,5% al 4% en peso de estabilizadores; aproximadamente del 1 al 3% en peso de por lo menos dos lubricantes; hasta el 10% en peso de plastificantes y adyuvantes de elaboración y el resto una resina a base de cloruro de polivinilo, en el supuesto de que no se encuentre presenta más de aproximadamente el 5% en peso de aditivos líquidos.
ES487660A 1979-01-15 1980-01-14 Perfeccionamientos en grabaciones de informacion de video Expired ES487660A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/003,363 US4228050A (en) 1979-01-15 1979-01-15 Conductive molding composition

Publications (1)

Publication Number Publication Date
ES487660A1 true ES487660A1 (es) 1980-09-16

Family

ID=21705511

Family Applications (1)

Application Number Title Priority Date Filing Date
ES487660A Expired ES487660A1 (es) 1979-01-15 1980-01-14 Perfeccionamientos en grabaciones de informacion de video

Country Status (13)

Country Link
US (1) US4228050A (es)
JP (1) JPS5597034A (es)
KR (1) KR840000225B1 (es)
AT (1) AT371613B (es)
AU (1) AU528386B2 (es)
DE (1) DE3000447A1 (es)
ES (1) ES487660A1 (es)
FR (1) FR2446301B1 (es)
GB (1) GB2039933B (es)
IT (1) IT1193456B (es)
NL (1) NL8000219A (es)
PL (1) PL123979B1 (es)
SU (1) SU1158053A3 (es)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341838A (en) * 1979-03-23 1982-07-27 Pioneer Electronic Corporation Molding compositions and diaphragms, arm pipes and head shells molded therefrom
US4299736A (en) * 1980-05-19 1981-11-10 Rca Corporation Conductive molding composition and discs therefrom
JPS5950252B2 (ja) * 1980-09-16 1984-12-07 日本ゼオン株式会社 硬質塩化ビニル樹脂組成物
IT1139503B (it) * 1980-10-27 1986-09-24 Rca Corp Dischi di supporto di informazioni ad elevata densita'
JPS5782308U (es) * 1980-11-06 1982-05-21
US4465616A (en) * 1981-02-04 1984-08-14 Rca Corporation Formulation of electrically conductive plastics
US4465617A (en) * 1981-02-04 1984-08-14 Rca Corporation Method for preparing a molding composition
US4391720A (en) * 1981-02-05 1983-07-05 Rca Corporation Bis(hydroxylkyl)disiloxanes and lubricant compositions thereof
US4355062A (en) * 1981-02-05 1982-10-19 Rca Corporation Bis(hydroxyalkyl)disiloxanes and lubricant compositions thereof
US4490283A (en) * 1981-02-27 1984-12-25 Mitech Corporation Flame retardant thermoplastic molding compounds of high electroconductivity
US4329278A (en) * 1981-03-11 1982-05-11 E. I. Du Pont De Nemours And Company Molding compositions
US4329276A (en) * 1981-03-11 1982-05-11 E. I. Du Pont De Nemours And Company Molding components
GB2098221B (en) * 1981-04-17 1985-02-06 Matsushita Electric Ind Co Ltd Method of producing video discs
JPS57177047A (en) * 1981-04-22 1982-10-30 Tokuyama Sekisui Kogyo Kk Electrically conductive resin composition and video disc record
US4376087A (en) * 1981-05-26 1983-03-08 Rca Corporation Processing of video discs
EP0074450A1 (en) * 1981-09-08 1983-03-23 Tenneco Polymers, Inc. Conductive moulding compositions containing copolymers of vinyl chloride and long chain alpha-olefins
US4399061A (en) * 1981-10-14 1983-08-16 Rca Corporation Preparation of video disc molding composition
US4416807A (en) * 1981-10-14 1983-11-22 Rca Corporation Conductive video discs
US4412941A (en) * 1981-10-22 1983-11-01 Phillips Petroleum Company Recording disc compositions comprising polymers of monovinyl-substituted hydrocarbons, conductive carbon black and lubricants
US4405541A (en) * 1981-10-29 1983-09-20 Rca Corporation Video disc processing
US4472295A (en) * 1981-11-17 1984-09-18 Rca Corporation Conductive molding composition and discs therefrom
US4596669A (en) * 1981-12-24 1986-06-24 Mitech Corporation Flame retardant thermoplastic molding compositions of high electroconductivity
US4575834A (en) * 1982-10-05 1986-03-11 Rca Corporation Method of improving the signal-to-noise ratio in a capacitance electronic disc system
US4479851A (en) * 1982-11-10 1984-10-30 Rca Corporation Purification of video disc lubricant additives
US4512916A (en) * 1982-12-27 1985-04-23 Rca Corporation Video disc molding composition
JPS59194818A (ja) * 1983-04-20 1984-11-05 Victor Co Of Japan Ltd 高密度情報信号記録媒体製造法
US4510104A (en) * 1983-10-07 1985-04-09 Rca Corporation Apparatus and method for automatically controlling an extruder for thermoplastic material
US4532074A (en) * 1983-11-07 1985-07-30 Rca Corporation Capacitance electronic disc molding composition
US4528213A (en) * 1983-11-22 1985-07-09 Rca Corporation EMI/RFI Shielding composition
US4515830A (en) * 1983-11-29 1985-05-07 Rca Corporation Solvent-cast capacitive high density information disc
JPS60124653A (ja) * 1983-12-10 1985-07-03 Victor Co Of Japan Ltd 導電性樹脂組成物
US4575838A (en) * 1984-02-29 1986-03-11 Rca Corporation Sandwich-type capacitive electronic discs
US4592861A (en) * 1984-06-08 1986-06-03 Uniroyal Chemical Company, Inc. Antistatic thermoplastic composition comprising a graft polymer, halogenated thermoplastic polymer and conductive carbon black
US4517117A (en) * 1984-06-20 1985-05-14 Rca Corporation Stabilizers for CED compositions
US4522747A (en) * 1984-06-26 1985-06-11 Rca Corporation Capacitance electronic disc molding compositions
US4962139A (en) * 1986-02-28 1990-10-09 W. C. Richards Company Conductive primer compositions with primary resin binder
US20030006535A1 (en) * 2001-06-26 2003-01-09 Michael Hennessey Method and apparatus for forming microstructures on polymeric substrates
US10995198B2 (en) * 2014-09-26 2021-05-04 Emerald Kalama Chemical, Llc Monobenzoate analogs useful as plasticizers in plastisol compositions

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997451A (en) * 1957-03-07 1961-08-22 Harry B Miller Conductive phonograph record containing thermoplastic resin and carbon black
US3842194A (en) * 1971-03-22 1974-10-15 Rca Corp Information records and recording/playback systems therefor
US3770667A (en) * 1971-10-01 1973-11-06 Abc Dispersion Chem Co Phonograph record additive
US3833408A (en) * 1972-04-19 1974-09-03 Rca Corp Video discs having a methyl alkyl silicone coating
US3960790A (en) * 1974-03-25 1976-06-01 Rca Corporation Disc record and method of compounding disc record composition
US3975321A (en) * 1974-05-13 1976-08-17 Air Products And Chemicals, Inc. Sound reproduction compositions
IT1118212B (it) * 1977-03-15 1986-02-24 Rca Corp Videodisco non rivestito
DE2810367C2 (de) * 1977-03-15 1984-12-20 Rca Corp., New York, N.Y. Informationsspeicherplatte
US4151132A (en) * 1977-07-25 1979-04-24 Rca Corporation Molding composition
US4129536A (en) * 1977-07-25 1978-12-12 Rca Corporation Vinyl chloride based injection molding composition

Also Published As

Publication number Publication date
JPS5597034A (en) 1980-07-23
NL8000219A (nl) 1980-07-17
DE3000447A1 (de) 1980-07-17
FR2446301A1 (fr) 1980-08-08
PL123979B1 (en) 1982-12-31
SU1158053A3 (ru) 1985-05-23
GB2039933A (en) 1980-08-20
JPH02777B2 (es) 1990-01-09
AU5413779A (en) 1980-07-24
KR830002007A (ko) 1983-05-21
PL221360A1 (es) 1980-09-22
IT7942916A0 (it) 1979-12-17
GB2039933B (en) 1983-05-25
FR2446301B1 (fr) 1986-05-02
US4228050A (en) 1980-10-14
ATA18680A (de) 1982-11-15
KR840000225B1 (ko) 1984-02-29
IT1193456B (it) 1988-06-22
DE3000447C2 (es) 1989-09-14
AT371613B (de) 1983-07-11
AU528386B2 (en) 1983-04-28

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