GB1367798A - Methods for manufacturing sound and video record disc - Google Patents

Methods for manufacturing sound and video record disc

Info

Publication number
GB1367798A
GB1367798A GB5422271A GB5422271A GB1367798A GB 1367798 A GB1367798 A GB 1367798A GB 5422271 A GB5422271 A GB 5422271A GB 5422271 A GB5422271 A GB 5422271A GB 1367798 A GB1367798 A GB 1367798A
Authority
GB
United Kingdom
Prior art keywords
centering
mandrel
video record
methods
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
GB5422271A
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.)
TELDEC Telefunken Decca Schallplatten GmbH
Original Assignee
TELDEC Telefunken Decca Schallplatten GmbH
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 TELDEC Telefunken Decca Schallplatten GmbH filed Critical TELDEC Telefunken Decca Schallplatten GmbH
Publication of GB1367798A publication Critical patent/GB1367798A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemically Coating (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
GB5422271A 1970-11-23 1971-11-22 Methods for manufacturing sound and video record disc Expired GB1367798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2057478A DE2057478C3 (de) 1970-11-23 1970-11-23 Verfahren zur Herstellung von zentrierten Pressmatrizen fur Schall platten und Videoplatten

Publications (1)

Publication Number Publication Date
GB1367798A true GB1367798A (en) 1974-09-25

Family

ID=5788855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5422271A Expired GB1367798A (en) 1970-11-23 1971-11-22 Methods for manufacturing sound and video record disc

Country Status (11)

Country Link
US (1) US3749828A (enExample)
JP (1) JPS5426881B1 (enExample)
AT (1) AT320306B (enExample)
BE (1) BE775667A (enExample)
CH (1) CH544986A (enExample)
DE (1) DE2057478C3 (enExample)
FR (1) FR2115346B1 (enExample)
GB (1) GB1367798A (enExample)
IT (1) IT939167B (enExample)
NL (1) NL7115842A (enExample)
SE (1) SE365745B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807856A1 (de) * 1978-02-23 1979-09-06 Mfe Corp Positioniervorrichtung
US4472124A (en) * 1980-09-05 1984-09-18 Matsushita Electric Industrial Co., Limited Device for producing an information recording disk

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1253374A (en) * 1916-08-21 1918-01-15 Bertram M Hansen Centering means for phonographic records and the like.
US1755743A (en) * 1928-11-02 1930-04-22 Edgar H Morrison Phonograph disk record

Also Published As

Publication number Publication date
US3749828A (en) 1973-07-31
DE2057478B2 (de) 1973-04-05
NL7115842A (enExample) 1972-05-25
CH544986A (de) 1973-11-30
AT320306B (de) 1975-02-10
BE775667A (fr) 1972-03-16
FR2115346B1 (enExample) 1976-02-13
DE2057478C3 (de) 1973-10-25
FR2115346A1 (enExample) 1972-07-07
JPS5426881B1 (enExample) 1979-09-06
IT939167B (it) 1973-02-10
SE365745B (enExample) 1974-04-01
DE2057478A1 (de) 1972-06-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee