NL190461C - A method of manufacturing a die for making copies of video discs. - Google Patents

A method of manufacturing a die for making copies of video discs.

Info

Publication number
NL190461C
NL190461C NL7601470A NL7601470A NL190461C NL 190461 C NL190461 C NL 190461C NL 7601470 A NL7601470 A NL 7601470A NL 7601470 A NL7601470 A NL 7601470A NL 190461 C NL190461 C NL 190461C
Authority
NL
Netherlands
Prior art keywords
die
manufacturing
video discs
making copies
copies
Prior art date
Application number
NL7601470A
Other languages
Dutch (nl)
Other versions
NL190461B (en
NL7601470A (en
Original Assignee
Discovision Ass
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 Discovision Ass filed Critical Discovision Ass
Publication of NL7601470A publication Critical patent/NL7601470A/en
Publication of NL190461B publication Critical patent/NL190461B/en
Application granted granted Critical
Publication of NL190461C publication Critical patent/NL190461C/en

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
NL7601470A 1975-02-24 1976-02-12 A method of manufacturing a die for making copies of video discs. NL190461C (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
NL7601470A NL7601470A (en) 1976-08-26
NL190461B NL190461B (en) 1993-10-01
NL190461C true NL190461C (en) 1994-03-01

Family

ID=24204533

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7601470A NL190461C (en) 1975-02-24 1976-02-12 A method of manufacturing a die for making copies of video discs.

Country Status (6)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721608A1 (en) * 1977-05-13 1978-11-16 Bosch Gmbh Robert Stamping die for making video storage patterns on plastic disks - using volatile metal film contg. pattern for electroforming of die
JPS5952715B2 (en) * 1977-09-05 1984-12-21 ソニー株式会社 Metsuki method
NL7908858A (en) * 1979-12-10 1981-07-01 Philips Nv METHOD FOR MANUFACTURING DIES FOR PLATE-SHAPED INFORMATION CONTAINERS, AND MATRIES MANUFACTURED BY THAT METHOD
JPS573239A (en) * 1980-06-06 1982-01-08 Hitachi Ltd Manufacture of information carrier
IT1139503B (en) * 1980-10-27 1986-09-24 Rca Corp HIGH DENSITY INFORMATION SUPPORT DISCS
JPS58158225A (en) * 1982-03-15 1983-09-20 Toshiba Corp Manufacture of information recording substrate
DE3377173D1 (en) * 1982-09-29 1988-07-28 Toshiba Kk Radiation-sensitive carrier body utilized as stamper structure
DE3337961A1 (en) * 1983-10-19 1985-05-09 Fa. Eduard Hueck, 5880 Lüdenscheid Surface-structured female mould for producing embossed engravings on pressed plastic plates, plastic laminates and the like, and method of producing it
JPS60131652A (en) * 1983-12-20 1985-07-13 Matsushita Electric Ind Co Ltd Signal recording stamper
DE3537483C1 (en) * 1985-10-22 1986-12-04 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for producing a large number of plate-shaped microstructure bodies made of metal
DE3737483A1 (en) * 1987-11-05 1989-05-18 Philips & Du Pont Optical Method for the reuse of glass substrates for optically readable high-density storage masters
ATE549294T1 (en) * 2005-12-09 2012-03-15 Obducat Ab DEVICE AND METHOD FOR TRANSFER OF PATTERN WITH INTERMEDIATE STAMP

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 (en) * 1971-12-02 1974-11-26
AR200876A1 (en) * 1972-09-02 1974-12-27 Philips Nv METHOD OF MANUFACTURING A DISCOIDAL INFORMATION CARRIER AND INFORMATION CARRIER MANUFACTURED BY SUCH METHOD
JPS5117451B2 (en) * 1972-10-17 1976-06-02
JPS5313580B2 (en) * 1973-02-08 1978-05-11

Also Published As

Publication number Publication date
NL190461B (en) 1993-10-01
FR2301355B1 (en) 1980-07-04
JPS55253A (en) 1980-01-05
CA1070261A (en) 1980-01-22
JPS5916332B2 (en) 1984-04-14
DE2603888A1 (en) 1976-09-02
NL7601470A (en) 1976-08-26
DE2603888B2 (en) 1977-12-15
DE2603888C3 (en) 1978-08-10
FR2301355A1 (en) 1976-09-17
GB1532545A (en) 1978-11-15
JPS51109801A (en) 1976-09-29

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Legal Events

Date Code Title Description
BC A request for examination has been filed
DNT Communications of changes of names of applicants whose applications have been laid open to public inspection

Free format text: MCA VIDEODISC, INC.

CNR Transfer of rights (patent application after its laying openfor public ins pection)

Free format text: DISCOVISION ASSOCIATES

A85 Still pending on 85-01-01
V4 Lapsed because of reaching the maxim lifetime of a patent

Free format text: 960212