GB1516121A - Method of manufacturing a die designed to duplicate a video frequency signal recording - Google Patents

Method of manufacturing a die designed to duplicate a video frequency signal recording

Info

Publication number
GB1516121A
GB1516121A GB2970175A GB2970175A GB1516121A GB 1516121 A GB1516121 A GB 1516121A GB 2970175 A GB2970175 A GB 2970175A GB 2970175 A GB2970175 A GB 2970175A GB 1516121 A GB1516121 A GB 1516121A
Authority
GB
United Kingdom
Prior art keywords
duplicate
manufacturing
resin
frequency signal
signal recording
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
GB2970175A
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of GB1516121A publication Critical patent/GB1516121A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
    • B29D17/005—Producing optically read record carriers, e.g. optical discs
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
GB2970175A 1974-07-16 1975-07-15 Method of manufacturing a die designed to duplicate a video frequency signal recording Expired GB1516121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7424668A FR2278474A1 (fr) 1974-07-16 1974-07-16 Procede de fabrication d'une matrice destinee a la duplication d'un enregistrement de signaux en videofrequence, et matrice ainsi obtenue

Publications (1)

Publication Number Publication Date
GB1516121A true GB1516121A (en) 1978-06-28

Family

ID=9141325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2970175A Expired GB1516121A (en) 1974-07-16 1975-07-15 Method of manufacturing a die designed to duplicate a video frequency signal recording

Country Status (5)

Country Link
JP (1) JPS5135308A (fr)
CA (1) CA1030788A (fr)
FR (1) FR2278474A1 (fr)
GB (1) GB1516121A (fr)
IT (1) IT1039798B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9400225A (nl) * 1994-02-14 1995-09-01 Od & Me Bv Werkwijze voor het zonder tussenkomst van een master vervaardigen van een stamper voor het voortbrengen van optische schijven.

Also Published As

Publication number Publication date
JPS5135308A (ja) 1976-03-25
FR2278474B1 (fr) 1976-12-24
IT1039798B (it) 1979-12-10
FR2278474A1 (fr) 1976-02-13
DE2531561B2 (de) 1976-10-21
DE2531561A1 (de) 1976-02-05
CA1030788A (fr) 1978-05-09

Similar Documents

Publication Publication Date Title
DE3167483D1 (en) A method of producing an information recording disk
US4164754A (en) Method of manufacturing a die designed to duplicate a video frequency signal recording
CA1032396A (fr) Mode de deposition d'un film mince au moyen d'un masque pelable
AU505421B2 (en) Electromechanical recording of metal masters
GB1513873A (en) Data carrier optically read out by transmission and method of manufacturing said data carrier
JPS5423501A (en) Method of duplicating information record disk
CA1000859A (en) Method of interpreting a coded record
GB1372082A (en) Record and playback apparatus for pulse width modulated record
HK51186A (en) Method of writing signal information on a disc
GB1417708A (en) Electron beam recording
GB1516121A (en) Method of manufacturing a die designed to duplicate a video frequency signal recording
FR2325262A1 (fr) Procede d'inscription de signaux de television sur un support d'information et enregistrement obtenu par ledit procede
GB1447066A (en) Method and apparatus for making disc records
GB1372083A (en) Sound records and reproducing apparatus
HK26990A (en) Method of making disc copies from an original recording on a matrix
CH613545A5 (en) Method of recording and making use of tachographic recordings
GB1522951A (en) Method of duplication of a video frequency signal recording
JPS5414706A (en) Information recording disc
JPS522403A (en) Signal processing circuit for obtaining recording signal for disc reco rd free from generation of tracing distortion at the time of reproduct ion
JPS5449103A (en) Production of information recording carrier
GB1384328A (en) Method for storing signals on a carrier and a carrier therefor
GB1372421A (en) Information record and apparatus for producing same
JPS53113424A (en) Long time recording system for video signal
JPS57148481A (en) Method for reproducing picture signal
JPS57158046A (en) Original disk for molding information recording body

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee