CA1088708A - Methode de fabrication de matrices pour presser des disques, et matrice ainsi obtenues - Google Patents

Methode de fabrication de matrices pour presser des disques, et matrice ainsi obtenues

Info

Publication number
CA1088708A
CA1088708A CA266,949A CA266949A CA1088708A CA 1088708 A CA1088708 A CA 1088708A CA 266949 A CA266949 A CA 266949A CA 1088708 A CA1088708 A CA 1088708A
Authority
CA
Canada
Prior art keywords
film
core
synthetic
records
core film
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
CA266,949A
Other languages
English (en)
Inventor
Johannes F. Roeloffzen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1088708A publication Critical patent/CA1088708A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
CA266,949A 1975-12-04 1976-12-01 Methode de fabrication de matrices pour presser des disques, et matrice ainsi obtenues Expired CA1088708A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB49914/75 1975-12-04
GB4991475A GB1522370A (en) 1975-12-04 1975-12-04 Method of manufacturing preforms for gramophone records

Publications (1)

Publication Number Publication Date
CA1088708A true CA1088708A (fr) 1980-11-04

Family

ID=10453976

Family Applications (1)

Application Number Title Priority Date Filing Date
CA266,949A Expired CA1088708A (fr) 1975-12-04 1976-12-01 Methode de fabrication de matrices pour presser des disques, et matrice ainsi obtenues

Country Status (5)

Country Link
CA (1) CA1088708A (fr)
DE (1) DE2654210A1 (fr)
FR (1) FR2334165A1 (fr)
GB (1) GB1522370A (fr)
NL (1) NL7613407A (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR368869A (fr) * 1906-08-14 1906-12-19 American Graphophone Co Enregistreur de sons pour machines parlantes
US1353522A (en) * 1920-01-21 1920-09-21 Victor H Emerson Method of manufacturing sound-records
US1370719A (en) * 1920-03-26 1921-03-08 Eugene A Widmann Talking-machine record
US1451783A (en) * 1921-01-21 1923-04-17 John Stogdell Stokes Molded sound-reproduction article
FR700988A (fr) * 1930-08-23 1931-03-10 Plaque sonore ou disque de phonographe et son procédé de fabrication
US2272157A (en) * 1940-03-11 1942-02-03 Plastic Binding Corp Record disk
DE1629327A1 (de) * 1965-05-18 1971-01-28 Clark Charles William Plattenfoermige Tonaufzeichnungstraeger

Also Published As

Publication number Publication date
FR2334165A1 (fr) 1977-07-01
FR2334165B1 (fr) 1982-12-31
NL7613407A (nl) 1977-06-07
GB1522370A (en) 1978-08-23
DE2654210A1 (de) 1977-06-16

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Legal Events

Date Code Title Description
MKEX Expiry