FR2278474B1 - - Google Patents

Info

Publication number
FR2278474B1
FR2278474B1 FR7424668A FR7424668A FR2278474B1 FR 2278474 B1 FR2278474 B1 FR 2278474B1 FR 7424668 A FR7424668 A FR 7424668A FR 7424668 A FR7424668 A FR 7424668A FR 2278474 B1 FR2278474 B1 FR 2278474B1
Authority
FR
France
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
FR7424668A
Other languages
French (fr)
Other versions
FR2278474A1 (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
Priority to FR7424668A priority Critical patent/FR2278474A1/en
Priority to CA231,488A priority patent/CA1030788A/en
Priority to IT2540375A priority patent/IT1039798B/en
Priority to GB2970175A priority patent/GB1516121A/en
Priority to DE19752531561 priority patent/DE2531561C3/en
Priority to JP8714975A priority patent/JPS5135308A/en
Publication of FR2278474A1 publication Critical patent/FR2278474A1/en
Application granted granted Critical
Publication of FR2278474B1 publication Critical patent/FR2278474B1/fr
Priority to US05/794,641 priority patent/US4164754A/en
Granted 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)
FR7424668A 1974-07-16 1974-07-16 METHOD OF MANUFACTURING A MATRIX INTENDED FOR THE DUPLICATION OF A VIDEO-FREQUENCY SIGNAL RECORDING, AND A MATRIX SO OBTAINED Granted FR2278474A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7424668A FR2278474A1 (en) 1974-07-16 1974-07-16 METHOD OF MANUFACTURING A MATRIX INTENDED FOR THE DUPLICATION OF A VIDEO-FREQUENCY SIGNAL RECORDING, AND A MATRIX SO OBTAINED
CA231,488A CA1030788A (en) 1974-07-16 1975-07-15 Method of manufacturing a die designed to duplicate a video frequency signal recording
IT2540375A IT1039798B (en) 1974-07-16 1975-07-15 PROCESS FOR MANUFACTURING A MATRIX INTENDED FOR THE DUPLICATION OF A VIDEO FREQUENCY SIGNAL RECORDING
GB2970175A GB1516121A (en) 1974-07-16 1975-07-15 Method of manufacturing a die designed to duplicate a video frequency signal recording
DE19752531561 DE2531561C3 (en) 1974-07-16 1975-07-15 Method of making a template for duplicating a video frequency signal record
JP8714975A JPS5135308A (en) 1974-07-16 1975-07-16 BIDEOSHUHASUSHINGOKIROKUNO FUKUSEIYOKATANO SEIZOHOHO
US05/794,641 US4164754A (en) 1974-07-16 1977-05-06 Method of manufacturing a die designed to duplicate a video frequency signal recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7424668A FR2278474A1 (en) 1974-07-16 1974-07-16 METHOD OF MANUFACTURING A MATRIX INTENDED FOR THE DUPLICATION OF A VIDEO-FREQUENCY SIGNAL RECORDING, AND A MATRIX SO OBTAINED

Publications (2)

Publication Number Publication Date
FR2278474A1 FR2278474A1 (en) 1976-02-13
FR2278474B1 true FR2278474B1 (en) 1976-12-24

Family

ID=9141325

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7424668A Granted FR2278474A1 (en) 1974-07-16 1974-07-16 METHOD OF MANUFACTURING A MATRIX INTENDED FOR THE DUPLICATION OF A VIDEO-FREQUENCY SIGNAL RECORDING, AND A MATRIX SO OBTAINED

Country Status (5)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9400225A (en) * 1994-02-14 1995-09-01 Od & Me Bv Method for manufacturing a stamper for producing optical disks without the intervention of a master.

Also Published As

Publication number Publication date
FR2278474A1 (en) 1976-02-13
IT1039798B (en) 1979-12-10
DE2531561A1 (en) 1976-02-05
DE2531561B2 (en) 1976-10-21
JPS5135308A (en) 1976-03-25
CA1030788A (en) 1978-05-09
GB1516121A (en) 1978-06-28

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Legal Events

Date Code Title Description
ST Notification of lapse