GB1532545A - Production of video disc replicas - Google Patents

Production of video disc replicas

Info

Publication number
GB1532545A
GB1532545A GB420276A GB420276A GB1532545A GB 1532545 A GB1532545 A GB 1532545A GB 420276 A GB420276 A GB 420276A GB 420276 A GB420276 A GB 420276A GB 1532545 A GB1532545 A GB 1532545A
Authority
GB
United Kingdom
Prior art keywords
electro
forming
mother
video disc
replicas
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
GB420276A
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.)
Discovision Associates
Original Assignee
MCA Discovision Inc
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 MCA Discovision Inc filed Critical MCA Discovision Inc
Publication of GB1532545A publication Critical patent/GB1532545A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/10—Moulds; Masks; Masterforms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Optical Record Carriers (AREA)
GB420276A 1975-02-24 1976-02-03 Production of video disc replicas Expired GB1532545A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55224975A 1975-02-24 1975-02-24

Publications (1)

Publication Number Publication Date
GB1532545A true GB1532545A (en) 1978-11-15

Family

ID=24204533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB420276A Expired GB1532545A (en) 1975-02-24 1976-02-03 Production of video disc replicas

Country Status (6)

Country Link
JP (2) JPS51109801A (nl)
CA (1) CA1070261A (nl)
DE (1) DE2603888B2 (nl)
FR (1) FR2301355A1 (nl)
GB (1) GB1532545A (nl)
NL (1) NL190461C (nl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721608A1 (de) * 1977-05-13 1978-11-16 Bosch Gmbh Robert Verfahren zur herstellung einer nachbildungsmatrize
JPS5952715B2 (ja) * 1977-09-05 1984-12-21 ソニー株式会社 メツキ方法
NL7908858A (nl) * 1979-12-10 1981-07-01 Philips Nv Werkwijze voor het vervaardigen van matrijzen voor plaatvormige informatiedragers, alsmede matrijzen vervaardigd volgens die werkwijze.
JPS573239A (en) * 1980-06-06 1982-01-08 Hitachi Ltd Manufacture of information carrier
IT1139503B (it) * 1980-10-27 1986-09-24 Rca Corp Dischi di supporto di informazioni ad elevata densita'
JPS58158225A (ja) * 1982-03-15 1983-09-20 Toshiba Corp 情報記録用基板の製造方法
DE3377173D1 (en) * 1982-09-29 1988-07-28 Toshiba Kk Radiation-sensitive carrier body utilized as stamper structure
DE3337961A1 (de) * 1983-10-19 1985-05-09 Fa. Eduard Hueck, 5880 Lüdenscheid Oberflaechenstrukturierte matrize zur erzeugung von praegegravuren auf pressplatten aus kunststoff, kunststofflaminaten u. dgl. und verfahren zu deren herstellung
JPS60131652A (ja) * 1983-12-20 1985-07-13 Matsushita Electric Ind Co Ltd 信号記録スタンパ−
DE3537483C1 (de) * 1985-10-22 1986-12-04 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Verfahren zum Herstellen einer Vielzahl plattenfoermiger Mikrostrukturkoerper aus Metall
DE3737483A1 (de) * 1987-11-05 1989-05-18 Philips & Du Pont Optical Verfahren zur wiederverwendung von glas-substraten fuer optisch auslesbare dichtspeichermaster
ATE549294T1 (de) * 2005-12-09 2012-03-15 Obducat Ab Vorrichtung und verfahren zum transfer von mustern mit zwischenstempel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585113A (en) * 1965-12-23 1971-06-15 Rca Corp Process for fabricating replicating masters
JPS4944124B2 (nl) * 1971-12-02 1974-11-26
AR200876A1 (es) * 1972-09-02 1974-12-27 Philips Nv Metodo de fabricacion de un portador de informacion discoidal y portador de informacion fabricado por dicho metodo
JPS5117451B2 (nl) * 1972-10-17 1976-06-02
JPS5313580B2 (nl) * 1973-02-08 1978-05-11

Also Published As

Publication number Publication date
JPS5916332B2 (ja) 1984-04-14
NL190461C (nl) 1994-03-01
DE2603888C3 (nl) 1978-08-10
FR2301355A1 (fr) 1976-09-17
DE2603888B2 (de) 1977-12-15
CA1070261A (en) 1980-01-22
FR2301355B1 (nl) 1980-07-04
DE2603888A1 (de) 1976-09-02
JPS51109801A (ja) 1976-09-29
NL190461B (nl) 1993-10-01
JPS55253A (en) 1980-01-05
NL7601470A (nl) 1976-08-26

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19960202