DE1008013B - Magnetic recording and playback head - Google Patents
Magnetic recording and playback headInfo
- Publication number
- DE1008013B DE1008013B DEI10425A DEI0010425A DE1008013B DE 1008013 B DE1008013 B DE 1008013B DE I10425 A DEI10425 A DE I10425A DE I0010425 A DEI0010425 A DE I0010425A DE 1008013 B DE1008013 B DE 1008013B
- Authority
- DE
- Germany
- Prior art keywords
- winding
- core
- magnetic recording
- head
- playback head
- 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.)
- Pending
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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/17—Construction or disposition of windings
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/488—Disposition of heads
- G11B5/4886—Disposition of heads relative to rotating disc
Description
DEUTSCHESGERMAN
Gegenstand der Erfindung ist ein Kopf zur magnetischen Aufzeichnung und Wiedergabe für scheiben-, band- oder zylinderförmige Aufzeichnungsträger. Um eine rasche Einstellung auf die Aufzeichnungs- oder Entnahmestelle zu ermöglichen, ist seine Masse klein gehalten. Magnetisch wirksamer Kern und Wicklung sind gegeneinander beweglich. Die Wicklung besteht aus einer schmalen Schleife, auf welcher der Kern beweglich ist.The invention relates to a head for magnetic recording and reproduction for disk, tape or cylindrical recording media. In order to quickly adjust to the recording or to enable extraction point, its mass is kept small. Magnetically effective core and winding can move relative to one another. The winding consists of a narrow loop, on which the core is movable.
Die Beschreibung zeigt die Anwendung des Erfmdungsgedankens auf den Fall eines scheibenförmigen. Aufzeichnungsträgers.The description shows the application of the inventive concept on the case of a disc-shaped. Recording medium.
Fig. 1 ist eine perspektivische Darstellung des Kopfes;Fig. 1 is a perspective view of the head;
Fig. 2 ist eine Seitenansicht auf der Linie 2-2 der Fig. 1;Figure 2 is a side view taken on line 2-2 of Figure 1;
Fig. 3 ist ein Schnitt 3-3 von Fig. 2, undFig. 3 is a section 3-3 of Fig. 2, and
Fig. 4 ist ein Schnitt 4-4 von Fig. 2.FIG. 4 is section 4-4 of FIG.
Der Kopf besteht aus einem Kern 15 und einer Wicklung 16. Der Kern aus Werkstoff hoher Permeabilität, z. B. Mu-Metall, ist ein schmaler Streifen, der unter Einhaltung eines engen Luftspaltes 17 lose um die Wicklung 16 gebogen ist. Es ist auch möglich, den. Kern aus Folien aufzubauen. Der Luftspalt verläuft parallel zur Wicklung 16.The head consists of a core 15 and a winding 16. The core is made of high permeability material, z. B. Mu-metal, is a narrow strip, while maintaining a narrow air gap 17 loosely is bent around the winding 16. It is also possible to use the. Build core from foils. The air gap runs parallel to winding 16.
Die Wicklung 16 besteht aus einer endlosen Schleife aus einem Leitermaterial ausreichenden Querschnitts, um einen Strom von der Größenordnung 10 Ampere führen zu können. Versuche ergaben bei einem solchen Strom und einem Leiterquerschnitt der Wicklung von etwa 0,5 X 3 mm2 befriedigende Ergebnisse. In der Zeichnung besteht die Wicklung aus einer Windung, sie kann jedoch auch aus mehreren Windungen bestehen. Um die Induktivität der Wicklung klein zu halten, sind ihre beiden Zweige in möglichst kleinem Abstand parallel geführt.The winding 16 consists of an endless loop made of a conductor material of sufficient cross-section to carry a current of the order of 10 amperes. Tests with such a current and a conductor cross-section of the winding of about 0.5 × 3 mm 2 gave satisfactory results. In the drawing, the winding consists of one turn, but it can also consist of several turns. In order to keep the inductance of the winding small, its two branches are routed in parallel with the smallest possible distance.
Der Aufzeichnungsstrom und die Entnahmespannung werden mit dem Übertrager 18 zu- bzw. abgeführt, dessen Kern 20 mit der Wicklung 16 und der aus vielen Windungen bestehenden Wicklung 19 verkettet ist (Fig. 2 und 3).The recording current and the extraction voltage are supplied and discharged with the transformer 18, the core 20 of which is concatenated with the winding 16 and the winding 19 consisting of many turns is (Figs. 2 and 3).
Die Wicklung 16 wird so angebracht, daß ein möglichst kleiner Abstand zwischen der magnetisierbaren Oberfläche 22 des Aufzeichnungsträgers 21 und dem Luftspalt 17 des Kernes 15 vorhanden ist.The winding 16 is attached so that the smallest possible distance between the magnetizable Surface 22 of the recording medium 21 and the air gap 17 of the core 15 is present.
Durch nicht gezeichnete Mittel wird der Kern 15 auf seiner Wicklung längs eines Radius des scheibenförmigen,
umlaufenden Aufzeichnungsträgers an die für Aufzeichnung oder Entnahme gewünschte Stelle
bewegt. Die geringe zu bewegende Masse des Kerns ist für rasche Einstellung vorteilhaft, ebenso das
Fehlen jeder elektrischen Verbindung zum bewegten Kopf zur magnetischen Aufzeichnung
und WiedergabeBy means not shown, the core 15 is moved on its winding along a radius of the disk-shaped, circumferential recording medium to the location desired for recording or removal. The low moving mass of the core is advantageous for quick adjustment, as is the lack of any electrical connection to the moving head for magnetic recording
and playback
Anmelder:Applicant:
IBM DeutschlandIBM Germany
Internationale Büro-MaschinenInternational office machines
Gesellschaft m.b.H.,
Sindelfingen bei StuttgartGesellschaft mbH,
Sindelfingen near Stuttgart
Beanspruchte Priorität:
V. St. v. Amerika vom 19.JuIi 1954Claimed priority:
V. St. v. America from July 19, 1954
Edward Alpers Quade, San Jose, Calif. (V. St. Α.),
ist als Erfinder genannt wordenEdward Alpers Quade, San Jose, Calif. (V. St. Α.),
has been named as the inventor
Teil. Auch wenn der Kopf durch den Aufzeichnungsträger (ζ. B. mittels Rillen) geführt werden soll, sind diese Eigenschaften wertvoll.Part. Even if the head is to be guided through the recording medium (e.g. by means of grooves), these properties are valuable.
Neben der gezeigten Anwendung auf scheibenförmige Aufzeichnungsträger ist der Kopf für bandförmige und walzenförmige Aufzeichnungsträger brauchbar.In addition to the application shown to disk-shaped recording media, the head is for tape-shaped and roller-shaped recording media are useful.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US444218A US2854525A (en) | 1954-07-19 | 1954-07-19 | Magnetic transducer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1008013B true DE1008013B (en) | 1957-05-09 |
Family
ID=23763986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI10425A Pending DE1008013B (en) | 1954-07-19 | 1955-07-14 | Magnetic recording and playback head |
Country Status (4)
Country | Link |
---|---|
US (1) | US2854525A (en) |
DE (1) | DE1008013B (en) |
FR (1) | FR1138306A (en) |
GB (1) | GB796734A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3042756A (en) * | 1956-12-21 | 1962-07-03 | Ibm | Rotatable magnetic transducer |
US3086087A (en) * | 1958-05-05 | 1963-04-16 | Minnesota Mining & Mfg | Transducer for magnetically recorded signals |
US3124788A (en) * | 1958-06-16 | 1964-03-10 | Magnetic head and drum memory system | |
US3249927A (en) * | 1961-02-13 | 1966-05-03 | Monroe Int | Transducer method and apparatus |
US3535466A (en) * | 1967-11-24 | 1970-10-20 | Rca Corp | High efficiency single turn magnetic head |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1883561A (en) * | 1930-03-25 | 1932-10-18 | Electric Magnetic Sound Corp | Magnetic sound recording and reproducing head |
DE612450C (en) * | 1933-02-05 | 1935-04-25 | Willy Hornauer | Device for reproducing magnetograms |
US2433207A (en) * | 1945-05-19 | 1947-12-23 | Chicago Coin Machine Co | Rectilinear pole piece for magnetic sound heads |
US2538981A (en) * | 1947-04-26 | 1951-01-23 | Heller | Means for retracting the cores from the electromagnets of a magnetic sound recordinghead |
US2497662A (en) * | 1947-08-29 | 1950-02-14 | Stackpole Carbon Co | Device for tuning high-frequency circuits |
US2536272A (en) * | 1948-12-02 | 1951-01-02 | Rca Corp | Magnetic recording-reproducing head |
-
1954
- 1954-07-19 US US444218A patent/US2854525A/en not_active Expired - Lifetime
-
1955
- 1955-07-13 FR FR1138306D patent/FR1138306A/en not_active Expired
- 1955-07-14 DE DEI10425A patent/DE1008013B/en active Pending
- 1955-07-15 GB GB20517/55A patent/GB796734A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2854525A (en) | 1958-09-30 |
FR1138306A (en) | 1957-06-12 |
GB796734A (en) | 1958-06-18 |
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