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ES451121A1 - Improvements introduced in a mold for use in mass production of video discs. (Machine-translation by Google Translate, not legally binding) - Google Patents

Improvements introduced in a mold for use in mass production of video discs. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES451121A1
ES451121A1 ES451121A ES451121A ES451121A1 ES 451121 A1 ES451121 A1 ES 451121A1 ES 451121 A ES451121 A ES 451121A ES 451121 A ES451121 A ES 451121A ES 451121 A1 ES451121 A1 ES 451121A1
Authority
ES
Spain
Prior art keywords
mold
discontinuities
video discs
translation
machine
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
ES451121A
Other languages
Spanish (es)
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
Priority to ES451121A priority Critical patent/ES451121A1/en
Publication of ES451121A1 publication Critical patent/ES451121A1/en
Expired legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Perfections introduced in a mold for use in the mass production of video discs or video discs, whose mold comprises an elastomer having an upper surface whose characteristics, when reproduced on a video disc, represent information, said surface being substantially flat and with discontinuities outside the plane of the surface corresponding to the information, said discontinuities being generally arranged in a substantially circular track, all discontinuities having a constant dimension in radial direction and a maximum constant dimension in the direction perpendicular to said surface, the information stored being represented by the length of each discontinuity in the circumferential direction and by the distance between adjacent discontinuities in the circumferential direction. (Machine-translation by Google Translate, not legally binding)
ES451121A 1976-08-31 1976-08-31 Improvements introduced in a mold for use in mass production of video discs. (Machine-translation by Google Translate, not legally binding) Expired ES451121A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES451121A ES451121A1 (en) 1976-08-31 1976-08-31 Improvements introduced in a mold for use in mass production of video discs. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES451121A ES451121A1 (en) 1976-08-31 1976-08-31 Improvements introduced in a mold for use in mass production of video discs. (Machine-translation by Google Translate, not legally binding)

Publications (1)

Publication Number Publication Date
ES451121A1 true ES451121A1 (en) 1977-08-16

Family

ID=8472189

Family Applications (1)

Application Number Title Priority Date Filing Date
ES451121A Expired ES451121A1 (en) 1976-08-31 1976-08-31 Improvements introduced in a mold for use in mass production of video discs. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES451121A1 (en)

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