IT1008289B - Procedimento per la fabbricazione di matrici per imprimere solchi in fogli in specie in fogli abrasi vi per l affilatura di tastatori per dischi con la registrazione di immagini - Google Patents

Procedimento per la fabbricazione di matrici per imprimere solchi in fogli in specie in fogli abrasi vi per l affilatura di tastatori per dischi con la registrazione di immagini

Info

Publication number
IT1008289B
IT1008289B IT48613/74A IT4861374A IT1008289B IT 1008289 B IT1008289 B IT 1008289B IT 48613/74 A IT48613/74 A IT 48613/74A IT 4861374 A IT4861374 A IT 4861374A IT 1008289 B IT1008289 B IT 1008289B
Authority
IT
Italy
Prior art keywords
sheets
abrased
sharpening
dies
species
Prior art date
Application number
IT48613/74A
Other languages
English (en)
Original Assignee
Ted Bildplatten
Aeg Telefunken Ag
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
Priority claimed from DE19732308891 external-priority patent/DE2308891C3/de
Application filed by Ted Bildplatten, Aeg Telefunken Ag filed Critical Ted Bildplatten
Application granted granted Critical
Publication of IT1008289B publication Critical patent/IT1008289B/it

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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/56—Sharpening
IT48613/74A 1973-02-23 1974-02-20 Procedimento per la fabbricazione di matrici per imprimere solchi in fogli in specie in fogli abrasi vi per l affilatura di tastatori per dischi con la registrazione di immagini IT1008289B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732308891 DE2308891C3 (de) 1973-02-23 Verfahren zur Herstellung von Matrizen zum Prägen von Rillen in Folien, insbesondere in Schleiffolien für das Anschleifen von Abtastern für Bildplatten

Publications (1)

Publication Number Publication Date
IT1008289B true IT1008289B (it) 1976-11-10

Family

ID=5872792

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48613/74A IT1008289B (it) 1973-02-23 1974-02-20 Procedimento per la fabbricazione di matrici per imprimere solchi in fogli in specie in fogli abrasi vi per l affilatura di tastatori per dischi con la registrazione di immagini

Country Status (10)

Country Link
US (1) US3956075A (it)
JP (1) JPS49119601A (it)
AT (1) AT336914B (it)
BE (1) BE811297A (it)
CH (1) CH567769A5 (it)
FR (1) FR2219479B3 (it)
GB (1) GB1457350A (it)
IT (1) IT1008289B (it)
NL (1) NL7401654A (it)
SE (1) SE391053B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2821297C3 (de) * 1978-05-16 1981-09-17 Teldec Telefunken-Decca-Schallplatten Gmbh, 2000 Hamburg Verfahren zur Herstellung eines plattenförmigen Informationsträgers
US4394341A (en) * 1982-02-01 1983-07-19 Rca Corporation Method to center and separate electroformed replicas from a matrix
US4431487A (en) * 1983-06-30 1984-02-14 Rca Corporation Matrixing apparatus and method for use in the manufacture of molded records
US4479853A (en) * 1984-03-29 1984-10-30 Rca Corporation Method for the manufacture of record stampers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE637310C (de) * 1936-10-26 Fedor Geske Verfahren zum Herstellen von Schallplatten
US2092880A (en) * 1933-09-26 1937-09-14 Rca Corp Record pressing matrix
US2067502A (en) * 1934-08-16 1937-01-12 Bell Telephone Labor Inc Art of duplicating phonograph records
US3584094A (en) * 1969-01-08 1971-06-08 Pic Tur Records Inc Method of making picture-type phonograph records
JPS4932124B1 (it) * 1970-05-25 1974-08-28
US3801476A (en) * 1972-03-01 1974-04-02 Teldec Telefunken Decca Method for improving the centering of stamping matrices

Also Published As

Publication number Publication date
FR2219479B3 (it) 1976-12-03
BE811297A (fr) 1974-06-17
GB1457350A (en) 1976-12-01
FR2219479A1 (it) 1974-09-20
CH567769A5 (it) 1975-10-15
ATA123874A (de) 1976-09-15
AT336914B (de) 1977-06-10
DE2308891A1 (de) 1974-09-05
NL7401654A (it) 1974-08-27
DE2308891B2 (de) 1975-09-04
US3956075A (en) 1976-05-11
SE391053B (sv) 1977-01-31
JPS49119601A (it) 1974-11-15

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