DE934851C - Magnetic head for magnetic recorders - Google Patents
Magnetic head for magnetic recordersInfo
- Publication number
- DE934851C DE934851C DES22811A DES0022811A DE934851C DE 934851 C DE934851 C DE 934851C DE S22811 A DES22811 A DE S22811A DE S0022811 A DES0022811 A DE S0022811A DE 934851 C DE934851 C DE 934851C
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- gap
- pole
- distance
- width
- 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
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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
Das Hauptpatent sieht einen zum Aufzeichnen oder Wiedergeben von Magnettonspuren gegebener Breite auf Bändern dienenden Spaltmagnetkopf vor, dessen Eisenkernquerschnitt innerhalb der Spule flächengleich ist einer Rechteckfläche, deren eine Seitenlänge etwa gleich der Tonspurbreite und deren andere Seitenlänge gleich oder kleiner als ein Fünfzehntel der Tonspurbreite ist, und dessen Polschuhe durch Hartlötung unter Verwendung eines nichtmagnetischen Metalls so miteinander verbunden sind, daß die Lötfuge den magnetischen Spalt bildet. Es ist bei Spaltmagnetköpfen an sich bekannt, die Fuge zwischen den Polen an dem dem Tonträger zugewandten Ende schmal und nach dem dem Tonträger abgewandten Ende sich stetig oder stufenweise erweiternd auszubilden und mit nichtmagnetischem Werkstoff auszufüllen. Die Erfindung betrifft die Anwendung dieses bekannten Prinzips auf den besonderen Spaltmagnetkopf nach, Hauptpatent. Demgemäß besteht die Erfindung darin, daß sich bei dem Magnetkopf nach Hauptpatent der Abstand der beiden Stirnflächen der Polschuhe mit der Entfernung von der Tonbandauflagestelle am Spalt in an sich bekannter Weise stetig oder stufenweise vergrößert und der ganze Polschuhzwischenraum in an sich bekannter Weise mit dem nichtmagnetischen Metall ausgefüllt ist.The main patent provides one for recording or reproducing magnetic sound tracks given width on tapes serving gap magnetic head, whose iron core cross-section inside the coil is equal in area to a rectangular area, one side of which is approximately equal to the width of the audio track and its other side length equal to or less than is a fifteenth of the width of the soundtrack, and its pole pieces are brazed underneath Use of a non-magnetic metal are connected together so that the Solder joint forms the magnetic gap. In the case of gap magnetic heads, it is known per se the joint between the poles at the end facing the sound carrier is narrow and gradually the end facing away from the sound carrier to expand continuously or gradually and to be filled in with non-magnetic material. The invention relates to application this known principle on the special gap magnetic head, main patent. Accordingly, the invention is that in the magnetic head according to the main patent the distance between the two end faces of the pole pieces with the distance from the tape support point at the gap in a known manner continuously or gradually increased and the whole Pole shoe space in a manner known per se with the non-magnetic metal is filled out.
Die Erstreckung des Spaltes läßt sich aber nicht beliebig verringern, weil sonst die Gefahr besteht, daß der Magnetkopf durch das vorbeigeführte Magnetband abgeschliffen und unbrauchbar wird. Gemäß einer Weiterbildung des Erfindungsgegenstandes wird deshalb der Magnetkopfspalt zweckmäßig so ausgebildet, -daß der Abstand an einer Stelle in an sich bekannter Weise unstetig oder stufenweise zunimmt und die Tiefe der dem Tonband zugewandten Zone des Polzwischenraumes etwa zwei Drittel bis drei Viertel der. gesamten Tiefe des Polzwischenraumes ist.However, the extent of the gap cannot be reduced at will, because otherwise there is a risk that the magnetic head by the passing magnetic tape becomes abraded and unusable. According to a further development of the subject matter of the invention Therefore, the magnetic head gap is expediently designed in such a way that the distance increases a point increases discontinuously or gradually in a known manner and the Depth of the zone of the pole gap facing the tape is about two thirds to three quarters of the. total depth of the pole gap is.
In der Zeichnung sind zwei Ausführungsformen der Erfindung beispielsweise dargestellt.In the drawing, two embodiments of the invention are for example shown.
Fig. 1 zeigt einen Magnetkopf, der aus zwei Polen i und 2 besteht, deren Luftspalt einen durch eine gestrichelt dargestellte Lötmasse 3 ausgefüllt wird. 4. bedeutet den am Magnetkopf vorbeigeführten Tonträger. Das Profil der Lötfuge zeigt den in der Zeichnung dargestellten Verlauf. An eine schmale Zone der parallel gegenüberstehenden Polkante schließt sich eine an sich nach innen stetig erweiternde Profillinie an.Fig. 1 shows a magnetic head which consists of two poles i and 2, whose air gap is filled by a soldering compound 3 shown in dashed lines will. 4. means the sound carrier moved past the magnetic head. The profile of the solder joint shows the course shown in the drawing. To a narrow zone of the parallel opposite pole edge is closed by an inwardly steadily widening Profile line.
Fig. 2 zeigt Magnetköpfe der an sich bekannten Ringbauart mit einem gestuften Profil. Der schmale Teil der Lötfuge beträgt etwa 70 % der gesamten Tiefe, während die restlichen 30 % für eine breite Zone des Luftspaltes verbleiben.Fig. 2 shows magnetic heads of the known ring type with a stepped profile. The narrow part of the solder joint is about 70% of the total depth, while the remaining 30% remains for a wide zone of the air gap.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES22811A DE934851C (en) | 1950-05-27 | 1951-04-20 | Magnetic head for magnetic recorders |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK3383A DE836112C (en) | 1950-05-27 | 1950-05-27 | Magnetic head for recording and playing back magnetic tapes |
DES22811A DE934851C (en) | 1950-05-27 | 1951-04-20 | Magnetic head for magnetic recorders |
Publications (1)
Publication Number | Publication Date |
---|---|
DE934851C true DE934851C (en) | 1955-11-03 |
Family
ID=7477088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES22811A Expired DE934851C (en) | 1950-05-27 | 1951-04-20 | Magnetic head for magnetic recorders |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE934851C (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE700177C (en) * | 1936-10-28 | 1940-12-14 | Aeg | Headphone for magnetic sound recorders |
CH252162A (en) * | 1946-01-11 | 1947-12-15 | Beka St Aubin Ag | Talk head on magnetic recorders. |
US2481393A (en) * | 1945-05-30 | 1949-09-06 | Armour Res Found | Magnetic recording head |
US2528261A (en) * | 1946-06-01 | 1950-10-31 | Armour Res Found | Apparatus for magnetic recording |
-
1951
- 1951-04-20 DE DES22811A patent/DE934851C/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE700177C (en) * | 1936-10-28 | 1940-12-14 | Aeg | Headphone for magnetic sound recorders |
US2481393A (en) * | 1945-05-30 | 1949-09-06 | Armour Res Found | Magnetic recording head |
CH252162A (en) * | 1946-01-11 | 1947-12-15 | Beka St Aubin Ag | Talk head on magnetic recorders. |
US2528261A (en) * | 1946-06-01 | 1950-10-31 | Armour Res Found | Apparatus for magnetic recording |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3120549C2 (en) | Magnetic recording and/or playback head | |
DE934851C (en) | Magnetic head for magnetic recorders | |
DE1474428A1 (en) | Multi-track magnetic head for recording, reproducing and / or deleting magnetic recordings | |
DE2455032A1 (en) | MAGNETIC RECORDING AND PLAYBACK SYSTEM | |
DE1952070A1 (en) | Magnetic head for recording / sensing and for deleting sound signals, especially for dictation machines | |
DE712759C (en) | Method for magnetic sound recording using the push-pull method | |
DE895063C (en) | Arrangement for electromagnetic recording | |
DE877205C (en) | Combined magnetic head with two working gaps | |
DE3544883C2 (en) | ||
DE746855C (en) | Method for magnetic sound recording | |
DE849013C (en) | Method for deleting disturbance recordings in magnetograms which were created by contact copying in the wound or the like state of the carrier | |
DE1963097A1 (en) | Magnetic core for a magnetic head | |
DE877204C (en) | Device for deleting sound recordings on magnetogram carriers | |
DE896122C (en) | Methods and devices for reproducing magnetic sound recordings with transverse magnetization | |
DE973764C (en) | Magnetic head for recording and playing back magnetograms | |
DE2808835B2 (en) | Device for demagnetizing tape heads | |
DE1141469B (en) | Device for aligning magnetizable particles in tape-shaped magnetogram carriers | |
DE836112C (en) | Magnetic head for recording and playing back magnetic tapes | |
DE836409C (en) | Magnetic head for recording or playing back sound recordings | |
DE864927C (en) | Magnet system arrangement for magnetic sound recordings, sound reproduction and deletion | |
DE951836C (en) | Process for the production of multi-track magnetic heads | |
DE820505C (en) | Magnetic head | |
DE1108932B (en) | Method and device for deleting and / or premagnetizing magnetic sound carriers with listening frequency | |
DE1214896B (en) | Magnetic head arrangement for magnetic recorders | |
DE1090755B (en) | Method for measuring a constant field magnetization of the lowest intensity, in particular due to remanence, of a part made of magnetizable material, in particular for checking magnetic sound devices for quality without direct field interference, and for practicing this method using magnetizable recording media |