GB1214340A - Video record disc and process for making same - Google Patents

Video record disc and process for making same

Info

Publication number
GB1214340A
GB1214340A GB6181468A GB6181468A GB1214340A GB 1214340 A GB1214340 A GB 1214340A GB 6181468 A GB6181468 A GB 6181468A GB 6181468 A GB6181468 A GB 6181468A GB 1214340 A GB1214340 A GB 1214340A
Authority
GB
United Kingdom
Prior art keywords
disc
diaphragm
critical temperature
making same
video record
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
GB6181468A
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.)
Gauss Electrophysics Inc
Original Assignee
Gauss Electrophysics 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 Gauss Electrophysics Inc filed Critical Gauss Electrophysics Inc
Publication of GB1214340A publication Critical patent/GB1214340A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • 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

Landscapes

  • Manufacturing Optical Record Carriers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
GB6181468A 1968-06-06 1968-12-31 Video record disc and process for making same Expired GB1214340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73500768A 1968-06-06 1968-06-06

Publications (1)

Publication Number Publication Date
GB1214340A true GB1214340A (en) 1970-12-02

Family

ID=24953958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6181468A Expired GB1214340A (en) 1968-06-06 1968-12-31 Video record disc and process for making same

Country Status (6)

Country Link
JP (1) JPS555177B1 (de)
CA (1) CA918292A (de)
DE (1) DE1904920C3 (de)
FR (1) FR1601186A (de)
GB (1) GB1214340A (de)
NL (1) NL6900541A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6764734B2 (en) * 1998-05-19 2004-07-20 Seagate Technology Llc High modulus and high damping plastic composite disc substrate for improved servo control by injection and co-injection molding

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197495A5 (de) * 1972-08-25 1974-03-22 Thomson Csf
NL165316C (nl) * 1973-10-01 1981-03-16 Mca Disco Vision Werkwijze voor de vervaardiging van een schrijfvormige video-afdrukmatrijs uitgaande van een moederschijf.
FR2310586A1 (fr) * 1975-05-07 1976-12-03 Thomson Brandt Procede de fabrication de supports d'informations lisibles optiquement par variation d'absorption et support ainsi obtenu

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6764734B2 (en) * 1998-05-19 2004-07-20 Seagate Technology Llc High modulus and high damping plastic composite disc substrate for improved servo control by injection and co-injection molding

Also Published As

Publication number Publication date
FR1601186A (de) 1970-08-10
JPS555177B1 (de) 1980-02-04
DE1904920B2 (de) 1974-10-24
NL6900541A (de) 1969-12-09
DE1904920C3 (de) 1975-06-12
DE1904920A1 (de) 1971-02-18
CA918292A (en) 1973-01-02

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years