IT1039798B - Procedimento di fabbricazione di una matrice destinata alla du plicazione di una registrazione di segnali in videofrequenza - Google Patents

Procedimento di fabbricazione di una matrice destinata alla du plicazione di una registrazione di segnali in videofrequenza

Info

Publication number
IT1039798B
IT1039798B IT2540375A IT2540375A IT1039798B IT 1039798 B IT1039798 B IT 1039798B IT 2540375 A IT2540375 A IT 2540375A IT 2540375 A IT2540375 A IT 2540375A IT 1039798 B IT1039798 B IT 1039798B
Authority
IT
Italy
Prior art keywords
duplication
manufacturing
frequency signal
signal recording
video frequency
Prior art date
Application number
IT2540375A
Other languages
English (en)
Italian (it)
Original Assignee
Thomson Brandt
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 filed Critical Thomson Brandt
Application granted granted Critical
Publication of IT1039798B publication Critical patent/IT1039798B/it

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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
IT2540375A 1974-07-16 1975-07-15 Procedimento di fabbricazione di una matrice destinata alla du plicazione di una registrazione di segnali in videofrequenza IT1039798B (it)

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
IT1039798B true IT1039798B (it) 1979-12-10

Family

ID=9141325

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2540375A IT1039798B (it) 1974-07-16 1975-07-15 Procedimento di fabbricazione di una matrice destinata alla du plicazione di una registrazione di segnali in videofrequenza

Country Status (5)

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

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
FR2278474A1 (fr) 1976-02-13
FR2278474B1 (Direct) 1976-12-24
DE2531561A1 (de) 1976-02-05
DE2531561B2 (de) 1976-10-21
CA1030788A (en) 1978-05-09
GB1516121A (en) 1978-06-28
JPS5135308A (ja) 1976-03-25

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