DE805812C - Process for the production of magnetogram carriers - Google Patents

Process for the production of magnetogram carriers

Info

Publication number
DE805812C
DE805812C DEP12380D DEP0012380D DE805812C DE 805812 C DE805812 C DE 805812C DE P12380 D DEP12380 D DE P12380D DE P0012380 D DEP0012380 D DE P0012380D DE 805812 C DE805812 C DE 805812C
Authority
DE
Germany
Prior art keywords
recess
hollow body
production
carrier tape
tape
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
DEP12380D
Other languages
German (de)
Inventor
Dr Rudolf Robl
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEP12380D priority Critical patent/DE805812C/en
Application granted granted Critical
Publication of DE805812C publication Critical patent/DE805812C/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Description

Magnetogrammträger aus magnetisierbare Teilchen enthaltendem, gießbarem Bindemittel und einem unmagnetischen Trägerband kann man in der Weise herstellen, daß man das Band über eine gewölbte Fläche, z. B. eine Walze, laufen läßt und auf der Strecke seiner Bewegung über diese Fläche, also z. B. auf der Scheitellinie der Walze, mit dem Bindemittel begießt. Auf diese Weise werden solche Ungleichmäßigkeiten in der Schichtbildung vermieden, die leicht auftreten, wenn das Trägerband zur Faltenbildung neigt. Fehler jedoch, die auf Ungleichmäßigkeiten in der Dicke des Trägerbandes zurückzuführen sind, lassen sich auf diese Weise nicht vermeiden, .denn aus dem Schlitz der über der Walze angeordneten Gießwanne tritt an dünneren Stellen des Trägerbandes, also bei sich vergrößerndem Abstand zwischen Schlitz und Band, mehr Bindemittel aus als an dickeren, diesen Abstand verringernden Stellen.Magnetogram carrier made of castable material containing magnetizable particles Binder and a non-magnetic carrier tape can be produced in the way that the tape over a curved surface, for. B. a roller, can run and on the distance of its movement over this area, so z. B. on the apex line the roller, coated with the binder. In this way, such irregularities become Avoided in the layering that easily occurs when the carrier tape is wrinkled tends. However, errors due to unevenness in the thickness of the carrier tape cannot be avoided in this way, because from the The slit of the tundish arranged above the roller occurs at thinner areas of the Carrier tape, so with increasing distance between slot and tape, more Binder than on thicker areas that reduce this distance.

Es wurde nun gefunden, daß sich diese Fehlerquellen nicht auswirken können, wenn man das Trägerband während seiner Bewegung über die gewölbte Fläche nicht an der äußeren, sondern an der inneren Wölbung begießt. Zu diesem Zweck ordnet man die Gießwanne innerhalb einer mit einer Aussparung versehenen, fest stehenden Hohlwalze derart an, daß sich das Trägerband unter der Aussparung an dem Schlitz der Gießwanne vorbei bewegt.It has now been found that these sources of error have no effect can if you move the carrier tape over the curved surface watered not on the outer, but on the inner curve. For this purpose it arranges one the tundish within a recess provided with a fixed Hollow roller in such a way that the carrier tape is under the recess at the slot the tundish moved past.

Da derjenige Teil der Mantelfläche der Walze, der von dem Trägerband nicht beaufschlagt wird, überflüssig ist, kann man statt der Hohlwalze auch einen halbzylindrischen Hohlkörper verwenden, wie er beispielsweise in der Zeichnung dargestellt ist. Das Trägerband A wird mittels der Führungsrollen Al, A2 und A3 an der Wölbung des Hohlkörpers B anliegend bewegt. Dabei empfängt es aus dem Schlitz der Gießwanne C, die über der Aussparung Bi des Körpers B angebracht ist, die Gießflüssigkeit, und diese bedeckt das Band in einer gleichmäßig dicken Schicht.Since that part of the outer surface of the roller which is not acted upon by the carrier tape is superfluous, a semi-cylindrical hollow body can also be used instead of the hollow roller, as shown for example in the drawing. The carrier tape A is moved against the curvature of the hollow body B by means of the guide rollers A1 , A2 and A3. It receives the casting liquid from the slot of the tundish C, which is attached above the recess Bi of the body B, and this covers the strip in a uniformly thick layer.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Magnetogrammträgern aus magnetisierbare Teilchen enthaltendem, gießbarem Bindemittel und unmagnetisierbarem Trägerband, dadurch gekennzeichnet, daß man das Band über eine mit einer Aussparung versehene, gewölbte Fläche laufen läßt und es dabei an seiner inneren Wölbung mit dem Bindemittel begießt. PATENT CLAIMS: i. Process for the production of magnetogram carriers from a castable binder containing magnetizable particles and a non-magnetizable carrier tape, characterized in that the tape is allowed to run over a curved surface provided with a recess and the binder is poured over its inner curve. 2. Vorrichtung zur Ausführung des Verfahrens nach Anspruch i, bestehend aus einem voll- oder halbzylindrischen Hohlkörper (B) mit einer Aussparung (B1), einer über der Aussparung innerhalb des Hohlkörpers angebrachten Gießwanne (C) und Einrichtungen (Al, A2, A3) zur Bewegung des an dem Hohlkörper anliegenden Bandes.2. Device for carrying out the method according to claim i, consisting of a fully or semi-cylindrical hollow body (B) with a recess (B1), a tundish (C) mounted above the recess within the hollow body and devices (Al, A2, A3) for moving the band resting against the hollow body.
DEP12380D 1948-10-02 1948-10-02 Process for the production of magnetogram carriers Expired DE805812C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP12380D DE805812C (en) 1948-10-02 1948-10-02 Process for the production of magnetogram carriers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP12380D DE805812C (en) 1948-10-02 1948-10-02 Process for the production of magnetogram carriers

Publications (1)

Publication Number Publication Date
DE805812C true DE805812C (en) 1951-05-31

Family

ID=7364041

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP12380D Expired DE805812C (en) 1948-10-02 1948-10-02 Process for the production of magnetogram carriers

Country Status (1)

Country Link
DE (1) DE805812C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052703B (en) * 1951-07-19 1959-03-12 Pyral Fa Device for applying one or more magnetic sound tracks to a flexible tape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052703B (en) * 1951-07-19 1959-03-12 Pyral Fa Device for applying one or more magnetic sound tracks to a flexible tape

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