DE882311C - Reel plate for magnetic recorders - Google Patents

Reel plate for magnetic recorders

Info

Publication number
DE882311C
DE882311C DEL9926A DEL0009926A DE882311C DE 882311 C DE882311 C DE 882311C DE L9926 A DEL9926 A DE L9926A DE L0009926 A DEL0009926 A DE L0009926A DE 882311 C DE882311 C DE 882311C
Authority
DE
Germany
Prior art keywords
reel plate
plate
magnetic recorders
core
cardboard
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
DEL9926A
Other languages
German (de)
Inventor
Eduard Dipl-Ing Schueller
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL9926A priority Critical patent/DE882311C/en
Application granted granted Critical
Publication of DE882311C publication Critical patent/DE882311C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00Record 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
    • G11B23/02Containers; Storing means both adapted to cooperate with the recording or reproducing means

Landscapes

  • Laminated Bodies (AREA)

Description

Für emne -einwandfreie Schallaufnahme und -wiedergabej mit bandförmigen Phonogrammträgern ist es erforderlich, die Tonträgergeschwindigke.:it so konstant wie möglich zu halten. Bei nicht perforierten Tonbändern können nun schädliche Geschwindgkeits-änderungen dadurch eintretein, däß :der Spulenkern nicht genau zentrisch läuft. Wegen der verhältnismäßig geringem, Masse des Spulenkeirn@es würden sich solche Exzentrizitäten nicht :störend bemerkbar machen. Da aber bei der üblichen Ausführung solcher Geräte mit Spulentellern der Spurenkern mehr oder weniger starr mit dem Spurenteller, auf den der Kern mit der Spule aufgelegt wird, verbunden ist, wird die Masse, und wegern, des großen Durchmessers des Tellers. insbesondere das Schwungmoment, beträchtlich vergrößert, so da,ß eis zu störenden Schwankungen der Tonträgergeschwindigkeit kommt. Auch durch andere Ursachen herbeigeführte Schwankungen :der Tonträgergeschwindigkeit wirken sich, durch das große Schwungmoment ungünstig hinsichtlich der Konstanz des Bä,nd= laufen aus.For perfect sound recording and reproduction with ribbon-shaped Phonogram carriers it is necessary to keep the sound carrier speed so constant as possible to keep. In the case of non-perforated tapes, harmful changes in speed can now occur This occurs because: the coil core does not run exactly centered. Because of the proportionate low, mass of the coil core @ there would not be such eccentricities: annoying to make noticable. But as with the usual design of such devices with reel plates the trace core more or less rigid with the trace plate on which the core is with the coil is applied, is connected, the mass, and wegern, of the great Diameter of the plate. especially the moment of inertia, considerably increased, so that there are disruptive fluctuations in the speed of the sound carrier. Also through other causes caused fluctuations: the sound carrier speed act due to the large moment of inertia, unfavorable with regard to the constancy of the belt, nd = run out of.

Mit Rücksicht auf die betriebssichere Be>da-enu g des: Gerätes ruß der Spurenteller beibehalten werden-. Um nun die schädliche Wirkung seinem Masse auszuschalten, wird gemäß :der Erfindung der Spulente@lleir aus einem leichtern und: festen Werkstoff, wiePapier odexSchaumkunststoff hergestellt, der weitgehend, vorzugsweise allseitig mit Metall kaschiert ist. Der Metallbelag ist ,erforderlich, um die Pappe gegen mechanische, chemische und Feuchtigkeitseinflüsse zu schätzen: sowie die Ableitung schädlicher Ladungen, die zu Knackgeräuschen führen können, zu erleichtern.With regard to the safe operation of the: Device soot the track plate are retained-. To now the harmful effects of his mass to turn off, according to: the invention of the Spulente @ lleir from a lighter and: solid material, such as paper or foam plastic, which is largely is preferably laminated with metal on all sides. The metal covering is required to appreciate the cardboard against mechanical, chemical and moisture influences: as well as the discharge of harmful charges that can lead to cracking noises, to facilitate.

Statt der Pappe kann auch Schaumkunststoff verwendet wenden, der bei großer Leichtigkeit hoher Festigkeit aufweist. Er kann in flüssigerForm in eine dem späteren Spulenteller entsprechende Form aus dünnem Blech gegossen. werden. Nach dem Erstarren, das bei bestimmten Kunststoffarten, unter Ausdehnung erfolgt, füllt der Schaumkunststoff diel Form völlig aus. Um Verformungen des Tellers während des, Herstellungspro@zesseis zu verhindern, ist es zweckmäßig, die@sentt dabei in eine kräftigere Form zu legen.Foam plastic can also be used instead of cardboard having great lightness high strength. In liquid form, it can be converted into a The shape of the later reel plate was cast from thin sheet metal. will. After solidification, which occurs with certain types of plastic under expansion, the foam plastic completely fills the mold. To avoid deformations of the plate during In order to prevent the manufacturing process, it is advisable to use the @ sentt in to lay a stronger shape.

Die so erzielte Herabsetzung des Schwungmoments verhindert, dä,ß sich ' die unvermeidlichen Schwankungen, der Toniträgergeschwindi;gkcit schädlich auswirken.The reduction in momentum achieved in this way prevents it from happening 'the inevitable fluctuations in the Toniträgergeschwindi; gkcit have a detrimental effect.

Die Figur veranschaulicht ein Ausführungsbeispiel des Spurentellers gemäß der Erfindung. Der Kern K des Tellers besteht aus Pappe. Dieser Kern ist allseitig mit dünnem Metall M kaschiert.The figure illustrates an embodiment of the track plate according to the invention. The core K of the plate is made of cardboard. This core is all-round laminated with thin metal M.

Claims (1)

PATENTANSPRUCH: Spurenteller für Magnettongeräte, dadurch gekennzeichnet, da3 er aus einem leichten festen Werkstoff, wie Pappe oder Schaumkunststoff besteht, der weitgehend, vorzugsweise allseitig mit Metall kaschiert ist:PATENT CLAIM: Track disc for magnetic sound devices, characterized in that that it consists of a light, solid material such as cardboard or foam plastic, which is largely laminated with metal, preferably on all sides:
DEL9926A 1951-08-26 1951-08-26 Reel plate for magnetic recorders Expired DE882311C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL9926A DE882311C (en) 1951-08-26 1951-08-26 Reel plate for magnetic recorders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL9926A DE882311C (en) 1951-08-26 1951-08-26 Reel plate for magnetic recorders

Publications (1)

Publication Number Publication Date
DE882311C true DE882311C (en) 1953-07-06

Family

ID=7258214

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL9926A Expired DE882311C (en) 1951-08-26 1951-08-26 Reel plate for magnetic recorders

Country Status (1)

Country Link
DE (1) DE882311C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037169B (en) * 1954-07-30 1958-08-21 Toledo Trust Company Tape cassette

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037169B (en) * 1954-07-30 1958-08-21 Toledo Trust Company Tape cassette

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