WO1986000164A1 - Cassette for data recording - Google Patents
Cassette for data recording Download PDFInfo
- Publication number
- WO1986000164A1 WO1986000164A1 PCT/EP1985/000272 EP8500272W WO8600164A1 WO 1986000164 A1 WO1986000164 A1 WO 1986000164A1 EP 8500272 W EP8500272 W EP 8500272W WO 8600164 A1 WO8600164 A1 WO 8600164A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cassette
- cassette according
- tape
- wheel
- band
- Prior art date
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record 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
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/60—Guiding record carrier
- G11B15/61—Guiding record carrier on drum, e.g. drum containing rotating heads
- G11B15/615—Guiding record carrier on drum, e.g. drum containing rotating heads inside container
Definitions
- the invention relates to a cassette according to the preamble of claim 1.
- a cassette for data recording is known in which the magnetic tape can be moved back and forth between two separately stored coils, both coils being drivable via winding mandrels.
- Such cassettes are used either for longitudinal recording or for inclined track recording.
- the magnetic tape remains inside the cassette and the recording or scanning magnetic head is pressed from the outside against the tape located in the cassette put a head drum around.
- Both systems are known and have proven themselves in practice.
- the invention has for its object to provide a cassette that has a similarly simple structure as the first-mentioned cassette with longitudinal scanning and recording, but can be used for devices with rotating head wheels.
- the object is achieved in that the tape which can be moved back and forth in the cassette is arched at the scanning point transversely to its direction of travel around a head drum wheel, the axis of rotation of which is parallel to the direction of tape travel - -S- -
- FIG. 2 shows another embodiment of the invention
- FIG. 3 shows a detailed representation from FIG. 1
- FIG. 4 shows a detailed representation from FIG. 2
- FIG 5 shows an embodiment with windings stored in the cassette which are not themselves driven.
- a cassette 1 is shown with two tape reels 2 and 3, between which the tape 4 is movable back and forth.
- the tape 4 is led out on the longitudinal end face 5 of the cassette 1, for example by means of a nose 6 and adapted to the shape of a head wheel 7 in the region of the scanning point.
- This is done by means of two pieces of felt 8 and 9, which are arranged on both sides of the scanning point and leave a groove-like depression 10 between them.
- the felt pieces 8, 9 are fastened on a flexible base 11, which is fixed in position in the cassette 1 and allow a flexible adaptation of the felt pieces 8, 9 to the outer diameter of the head drum 7.
- the band 4 is nestled over the felt pieces 8, 9 on the head wheel 7 and tensioned so that optimum scanning properties of the band 4 result in the area of the heads 7a of the head wheel 7 (band-head contact).
- the head wheel 7 is designed as a head drum or inserted into a head drum. - 3 -
- the curvature of the belt 4 is dimensioned such that the wrap angle of the belt area is between 40 and 70, depending on the head wheel or head drum diameter.
- a transport roller 12 is provided, the boundary lines of the longitudinal section of which are essentially biconcave. It is thereby achieved that the band 4 is bulged in front of the entry point for scanning.
- FIG. 2 shows in detail an embodiment of the felt pieces 8 and 9 and the flexible base 11.
- a foil made of copper beryllium was used for the flexible base 11. With non-magnetic properties, this film has sufficient elasticity and durability.
- the pad 11 can itself be flat in the case of shaped pieces of felt 8, 9.
- the pad 11 can also be adapted itself to the head wheel diameter and be provided with felt pieces 8, 9 of flat construction.
- Fig. 3 a modification of the cassette 1 shown in Fig. 1 is shown, in which the curvature of the tape 4 for fitting to the head wheel / is not caused by pressing on the head wheel 7 or the head drum, but by a half-shell 13.
- This half-shell 13 is rigidly designed and optimally adapted to the shape of the head drum in the area of the scanning point.
- this half-shell 13 has grooves 14, 15 in which
- an additional groove 16 is provided in the scanning area. Because of the required precision of this half-shell 13, it is preferably part of the device and is then folded into the interior of the cassette 1 for recording or scanning. For this purpose, a recess 17 is provided in the cassette 1, the size of which is so dimensioned. that the half-shell 13 can be inserted.
- Fig. 4 shows in detail the design of this half-shell 13.
- the negative pressure in the grooves 14, 15 is obtained either by a separate pump or by the fact that the rapidly rotating top wheel 7 has a pump part 18.
- FIG. 5 shows a modification of the cassette 1 in which the tape windings 2 and 3 are no longer driven directly, but are rotatably supported in the cassette 1 without their own direct drive.
- the actual drive takes place through a separate roller 19 ? which is inserted into the cassette 1 from the outside and drives the tape 4 itself in the area between the tape reels 2, 3.
- a cassette with such a drive is described, for example, in German patents P 11 87 028 and 22 30 28l.
- the cassette 1 is designed in such a way that the roller 12, which is biconcavely shaped for arching the band 4, is arranged near the edge of the cassette 1, which delimits the longitudinal end face 5 facing the head wheel 7.
- the head wheel 7 is arranged such that the scanning point is close to the roller 7 and the motor 21 driving the head wheel 7 is outside - -
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
Cassette for data recording, with a tape (4) displaceable between two spools (2, 3) arranged in the cassette, particularly a magnetic tape, wherein mechanisms (6, 7, 9, 12) are provided for bending the tape (4) transversally with respect to the tape conveying direction.
Description
- ä " - ä "
Kassette für DatenaufzeichnungCassette for data recording
Die Erfindung betrifft eine Kassette nach dem Oberbegriff des Anspruchs 1.The invention relates to a cassette according to the preamble of claim 1.
Es ist eine Kassette für Datenaufzeichnung bekannt, bei der das Magnetband zwischen zwei getrennt gelagerten Spulen hin und her bewegbar ist, wobei beide Spulen über Wickeldorne antreibbar sind. Solche Kassetten werden entweder für Längs¬ aufzeichnung oder für Schrägspuraufzeichnung verwendet. Bei der LängsaufZeichnung bleibt das Magnetband innerhalb der Kassette und der aufzeichnende oder abtastende Magnetkopf wird von außen gegen das in der Kassette befindliche Band ge¬ drückt.Bei der Sεhrägspu-raufZeichnung wird vor der Aufzeich¬ nung oder Abtastung das Magnetband aus der Kassette gezogen und um eine Kopftrommel herumgelegt. Beide Systeme sind be¬ kannt und haben sich in der Praxis bewährt. Der Erfindung liegt die Aufgabe zugrunde, eine Kassette zu schaffen, die einen ähnlich einfachen Aufbau hat wie die zuerst genannte Kassette mit Längsabtastung und Aufzeichnung, aber für Geräte mit rotierenden Kopfrädern eingesetzt werden kann.A cassette for data recording is known in which the magnetic tape can be moved back and forth between two separately stored coils, both coils being drivable via winding mandrels. Such cassettes are used either for longitudinal recording or for inclined track recording. During the longitudinal recording, the magnetic tape remains inside the cassette and the recording or scanning magnetic head is pressed from the outside against the tape located in the cassette put a head drum around. Both systems are known and have proven themselves in practice. The invention has for its object to provide a cassette that has a similarly simple structure as the first-mentioned cassette with longitudinal scanning and recording, but can be used for devices with rotating head wheels.
Diese Aufgabe wird durch eine Kassette nach dem Oberbegriff des Anspruchs 1 gelöst, die im Kennzeichen des Anspruchs 1 beschrieben ist. Weiterbildungen der Erfindung werden in den Unter¬ ansprüchen beschrieben.This object is achieved by a cassette according to the preamble of claim 1, which is described in the characterizing part of claim 1. Further developments of the invention are described in the subclaims.
Im Prinzip wird die Aufgabe dadurch gelöst, daß das in der Kassette hin und her bewegbare Band an der Abtaststelle quer zu seiner Laufrichtung um ein Kopftrommelrad gewölbt wird, dessen Rotationsachse parallel zur Bandlaufrichtung
- -S- -In principle, the object is achieved in that the tape which can be moved back and forth in the cassette is arched at the scanning point transversely to its direction of travel around a head drum wheel, the axis of rotation of which is parallel to the direction of tape travel - -S- -
liegt, dessen Spuren also im wesentlichen oder nahezu senk¬ recht zur Bandlaufrichtung auf das Band geschrieben werden.lies, the tracks of which are thus written onto the tape essentially or almost perpendicular to the direction of tape travel.
Zur näheren Erläuterung der Erfindung werden im folgenden mehrere Ausführungsbeispiele an Hand der Zeichnungen be¬ schrieben. Diese zeigen in Fig. 1 die Prinzipdarstellung einer Kassette gemäß derTo explain the invention in more detail, several exemplary embodiments are described below with reference to the drawings. These show in Fig. 1 the basic illustration of a cassette according to the
Erfindung, Fig. 2 eine andere Ausführungsform der Erfindung, Fig. 3 eine Detaildarstellung aus Fig. 1, Fig. 4 eine Detaildarstellung aus Fig. 2,Invention, FIG. 2 shows another embodiment of the invention, FIG. 3 shows a detailed representation from FIG. 1, FIG. 4 shows a detailed representation from FIG. 2,
Fig. 5 ein Ausführungsbeispiel mit in der Kassette gelager¬ ten Wickeln, die selbst nicht angetrieben werden.5 shows an embodiment with windings stored in the cassette which are not themselves driven.
In Fig. 1 ist eine Kassette 1 mit zwei Bandwickeln 2 und 3 dargestellt, zwischen denen das Band 4 hin und her bewegbar ist. Das Band 4 wird an der Längsstirnseite 5 der Kassette 1 herausgeführt, beispielsweise mittels einer Nase 6 und im Bereich der Abtaststelle der Form eines Kopfrades 7 angepaßt. Dies geschieht mittels zweier Filzstücke 8 und 9, die beidseitig der AbtaststELle angeordnet sind und zwischen sich eine rillenartige Vertiefung 10 freilassen. Die Filzstücke 8,9 sind auf einer flexiblen Unterlage 11 befestigt, die in der Kassette 1 ortsfest gelagert ist und eine flexible Anpassung der Filzstücke 8,9 an den Außen¬ durchmesser der Köpftrommel 7 ermöglichen. Das Band 4 wird über die Filzstücke 8,9 an das Kopfrad 7 geschmiegt und dabei so gespannt, daß optimale Abtasteigenschaften des Bandes 4 im Bereich der Köpfe 7a des Kopfrades 7 sich ergeben (Band-Kopf-Kontakt) . Das Kopfrad 7 ist als Kopf¬ trommel ausgebildet oder in eine Köpftrommel eingefügt.
- 3 -In Fig. 1, a cassette 1 is shown with two tape reels 2 and 3, between which the tape 4 is movable back and forth. The tape 4 is led out on the longitudinal end face 5 of the cassette 1, for example by means of a nose 6 and adapted to the shape of a head wheel 7 in the region of the scanning point. This is done by means of two pieces of felt 8 and 9, which are arranged on both sides of the scanning point and leave a groove-like depression 10 between them. The felt pieces 8, 9 are fastened on a flexible base 11, which is fixed in position in the cassette 1 and allow a flexible adaptation of the felt pieces 8, 9 to the outer diameter of the head drum 7. The band 4 is nestled over the felt pieces 8, 9 on the head wheel 7 and tensioned so that optimum scanning properties of the band 4 result in the area of the heads 7a of the head wheel 7 (band-head contact). The head wheel 7 is designed as a head drum or inserted into a head drum. - 3 -
Die Wölbung des Bandes 4 ist so bemessen, daß der Umschlin- gungswinkel des Bandbereiches je nach Kopfrad- oder' Kopf¬ trommeldurchmesser zwischen 40 und 70 beträgt. Im Bereich der Austrittsstelle 6 vor dem Einlauf zur Abtaststelle ist eine Transportrolle 12 vorgesehen, deren Begrenzungslinien des Längsschnittes im wesentlichen bikonkav sind. Dadurch wird erreicht, daß das Band 4 vor der Eintrittsstelle zur Abtastung vorgewölbt wird.The curvature of the belt 4 is dimensioned such that the wrap angle of the belt area is between 40 and 70, depending on the head wheel or head drum diameter. In the area of the exit point 6 before the inlet to the scanning point, a transport roller 12 is provided, the boundary lines of the longitudinal section of which are essentially biconcave. It is thereby achieved that the band 4 is bulged in front of the entry point for scanning.
Fig. 2 zeigt im Detail eine Ausbildung der Filzstücke 8 und 9 und der flexiblen Unterlage 11. Bei einem erprobten Aus¬ führungsbeispiel wurde für die flexible Unterlage 11 eine Folie aus Kupferberyllium verwendet. Diese Folie hat bei antimagnetischen Eigenschaften eine ausreichende Elastizität und Dauer estigkeit. Die Unterlage 11 kann selbst eben sein bei geformten Filzstücken 8,9. Die Unterlage 11 kann aber auch selbst an den Kopfraddurchmesser angepaßt sein und mit Filzstücken 8,9 gleichmäßig flachen Aufbaus versehen sein.2 shows in detail an embodiment of the felt pieces 8 and 9 and the flexible base 11. In a tried-and-tested embodiment, a foil made of copper beryllium was used for the flexible base 11. With non-magnetic properties, this film has sufficient elasticity and durability. The pad 11 can itself be flat in the case of shaped pieces of felt 8, 9. The pad 11 can also be adapted itself to the head wheel diameter and be provided with felt pieces 8, 9 of flat construction.
In Fig. 3 ist eine Abwandlung der in Fig. 1 dargestellten Kassette 1 gezeigt, bei der die Wölbung des Bandes 4 für das Anschmiegen an das Kopfrad/nicht durch Anpressen an das Kopfrad 7 oder die Kopftrommel bewirkt wird, sondern durch eine Halbschale 13. Diese Halbschale 13 ist in sich fest ausgebildet und optimal an die Form der Kopftrommel im Bereich der Abtaststelle angepaßt. Diese Halbschale 13 weist neben der Abtaststelle Rillen 14,15 auf, in denenIn Fig. 3 a modification of the cassette 1 shown in Fig. 1 is shown, in which the curvature of the tape 4 for fitting to the head wheel / is not caused by pressing on the head wheel 7 or the head drum, but by a half-shell 13. This half-shell 13 is rigidly designed and optimally adapted to the shape of the head drum in the area of the scanning point. In addition to the scanning point, this half-shell 13 has grooves 14, 15 in which
Unterdruck erzeugt und damit das Band an die Innenseite derCreates negative pressure and thus the tape to the inside of the
13 Halbschale angesaugt wird. Auf diese Weise wird die im Be¬ reich der Abtaststelle erforderliche Wölbung und diejenige Spannung des Bandes 4 erzielt, die über dem Abtastbereich
- _ • -13 half-shell is sucked. In this way, the curvature required in the area of the scanning point and the tension of the band 4 which is above the scanning area are achieved - _ • -
erforderlich ist. Zu diesem Zweck ist eine zusätzliche Rille 16 im Abtastbereich vorgesehen. Wegen der erforder¬ lichen Präzision dieser Halbschale 13 ist sie vorzugsweise Teil des Gerätes und wird dann für die Aufzeichnung oder Abtastung in den Innenbereich der Kassette 1 geklappt. Zu diesem Zweck ist in der Kassette 1 eine Aussparung 17 vorge¬ sehen, deren Größe so bemessen ist. daß die Halbschale 13 eingeführt werden kann.is required. For this purpose, an additional groove 16 is provided in the scanning area. Because of the required precision of this half-shell 13, it is preferably part of the device and is then folded into the interior of the cassette 1 for recording or scanning. For this purpose, a recess 17 is provided in the cassette 1, the size of which is so dimensioned. that the half-shell 13 can be inserted.
Fig. 4 zeigt im Detail die Ausbildung dieser Halbschale 13. Der Unterdruck in den Rillen 14,15 wird entweder durch eine gesonderte Pumpe oder dadurch gewonnen, daß das schnell rotierende Kopfrad 7 einen Pumpenteil 18 aufweist.Fig. 4 shows in detail the design of this half-shell 13. The negative pressure in the grooves 14, 15 is obtained either by a separate pump or by the fact that the rapidly rotating top wheel 7 has a pump part 18.
In Fig. 5 ist eine Abwandlung der Kassette 1 dargestellt, in der die Bandwickel 2 und 3 nicht mehr direkt angetrieben werden, sondern ohne eigenen direkten Antrieb in der Kasset¬ te 1 drehbar gelagert sind. Der eigentliche Antrieb er¬ folgt durch eine gesonderte Rolle 19? die in die Kassette 1 von außen eingeführt wird und das Band 4 selbst im Bereich zwischen den Bandwickeln 2,3 antreibt. Eine Kassette mit solchem Antrieb ist beispielsweise in den deutschen Patenten P 11 87 028 und 22 30 28l beschrieben.5 shows a modification of the cassette 1 in which the tape windings 2 and 3 are no longer driven directly, but are rotatably supported in the cassette 1 without their own direct drive. The actual drive takes place through a separate roller 19 ? which is inserted into the cassette 1 from the outside and drives the tape 4 itself in the area between the tape reels 2, 3. A cassette with such a drive is described, for example, in German patents P 11 87 028 and 22 30 28l.
Die Kassette 1 ist so beschaffen, daß die zur Wölbung des Bandes 4 bikonkav geformte Rolle 12 nahe der Kante der Kassette 1 angeordnet ist, die die dem Kopfrad 7 zuge¬ wandte Längsstirnseite 5 begrenzt. Im Gerät ist das Kopf¬ rad 7 so angeordnet, daß die Abtaststelle nahe der Rolle 7 liegt und der das Kopfrad 7 antreibende Motor 21 außerhalb
- -The cassette 1 is designed in such a way that the roller 12, which is biconcavely shaped for arching the band 4, is arranged near the edge of the cassette 1, which delimits the longitudinal end face 5 facing the head wheel 7. In the device, the head wheel 7 is arranged such that the scanning point is close to the roller 7 and the motor 21 driving the head wheel 7 is outside - -
des Bereiches der Kassette 1. Dadurch werden evtl. Magnet¬ streufelder des Motors 21 von der Kassette 1 und dem Band 4 ferngehalten. Evtl. noch störende Magnetfelder können durch Abschirmungen im Gerät und/oder der Kassette vom Band ferngehalten werden.
of the area of the cassette 1. This may keep magnetic stray fields of the motor 21 away from the cassette 1 and the tape 4. Possibly. Magnetic fields that are still disruptive can be kept away from the tape by shielding in the device and / or the cassette.
Claims
1. Kassette für Datenaufzeichnung mit einem zwischen zwei in der Kassette gelagerten Bandwickeln (2,3) bewegbaren Band (4), insbesondere Magnetband, dadurch gekennzeich¬ net, daß Mittel (6,7,9,12) zur Wölbung des Bandes (4) quer zur Bandtransportrichtung vorgesehen sind.1. Cassette for data recording with a tape (4), in particular magnetic tape, movable between two tape reels (2, 3) stored in the cassette, characterized in that means (6, 7, 9, 12) for arching the tape (4 ) are provided transversely to the tape transport direction.
2. Kassette nach Anspruch 1, dadurch gekennzeichnet, daß in der Kassette (l) eine Rolle (12) gelagert ist, deren Begrenzungsl-inien eines Längsschnittes bikonkav sind.2. Cassette according to claim 1, characterized in that in the cassette (l) a roller (12) is mounted, the boundary lines of a longitudinal section are biconcave.
3. Kassette nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wölbung so bemessen ist, daß das gewölbte Band (4) dem Umfang des Kopfrades (7) angepaßt ist, dessen Köpfe quer zur Baπdlaufrichtung rotieren. " ? -3. Cassette according to claim 1 or 2, characterized in that the curvature is dimensioned so that the curved band (4) is adapted to the circumference of the head wheel (7), the heads of which rotate transversely to the direction of the web. "? -
4. Kassette nach einem der Ansprüche 1 - 3» dadurch gekenn¬ zeichnet, daß auf der dem rotierenden Kopfrad (7) abge¬ wandten Seite des Bandes (4) eine Hälbschale (13) vorgesehen ist, die die Wölbung des Bandes (4) ständig dem Umfang des Kop rädes anpaßt-.4. Cassette according to one of claims 1-3 » characterized gekenn¬ characterized in that on the rotating head wheel (7) facing away from the belt (4) side a half-shell (13) is provided which the curvature of the belt (4) constantly adapts to the scope of the wheel.
5. Kassette nach Anspruch 4, dadurch gekennzeichnet, daß die Halbschale (13) selbst der Form des Kopfrades (7) angepaßt ist und das Band (4) durch Unterdruck in die gewünschte Form zieht.5. Cassette according to claim 4, characterized in that the half-shell (13) itself is adapted to the shape of the top wheel (7) and the tape (4) pulls into the desired shape by negative pressure.
6. Kassette nach Anspruch 1 - 5 . dadurch gekennzeichnet, daß der Unterdruck auf der dem Kopfrad (7) abgewandten Seite des Bandes (4) durch Rillen (l4,15) in der Halb¬ schale (13) bewirkt wird, die zu beiden Seiten der Ab¬ taststelle angeordnet sind.6. Cassette according to claim 1-5 . characterized in that the negative pressure on the side of the belt (4) facing away from the top wheel (7) is brought about by grooves (14, 15) in the half-shell (13) which are arranged on both sides of the scanning point.
7. Kassette nach einem der Ansprüche 1 - 6, dadurch gekenn¬ zeichnet, daß auf der dem Kopfrad (7) abgewandten Seite des Bandes (4) im Bereich der Aufzeichnungsstelle eine Rille (l6) vorgesehen ist, über der das Band (4) unter Spannung gehalten wird.7. Cassette according to one of claims 1-6, characterized gekenn¬ characterized in that a groove (l6) is provided on the side of the tape (4) facing away from the head wheel (7) in the region of the recording point, via which the tape (4) is kept under tension.
8. Kassette nach einem der Ansprüche 1 - 7, dadurch gekenn¬ zeichnet, daß die Spannung durch Filzstücke (8,9) be¬ wirkt wird, die der Form des Kopfrades (7) angepaßt sind oder anpaßbar sind.8. Cassette according to one of claims 1-7, characterized gekenn¬ characterized in that the tension is effected by felt pieces (8,9) which are adapted to the shape of the top wheel (7) or are adaptable.
9. Kassette nach einem der Ansprüche 1 - 8, dadurch gekenn¬ zeichnet, daß zwischen den Filzstücken ein Abstand vor¬ gesehen ist, in dem das Band gespannt ist. - a -9. Cassette according to one of claims 1-8, characterized gekenn¬ characterized in that a distance is seen vor¬ between the pieces of felt, in which the tape is tensioned. - a -
10. Kassette nach Anspruch 8 oder 9» dadurch gekennzeichnet, daß die Filzstücke (8,9) auf einer elastischen Unter¬ lage befestigt sind, die sich an die Kopftrommelform anschmiegt.10. Cassette according to claim 8 or 9 », characterized in that the felt pieces (8,9) are attached to an elastic Unter¬ layer which nestles against the head drum shape.
11. Kassette nach Anspruch 10, dadurch gekennzeichnet, daß die elastische Unterlage aus Kupferberyllium besteht.11. Cassette according to claim 10, characterized in that the elastic base consists of copper beryllium.
12. Kassette nach einem der Ansprüche 4 - 7, dadurch ge¬ kennzeichnet, daß bei einer Halbschale ( 13) mit Unter¬ druckerzeugung, die Teil des Gerätes ist, eine Klappe (20) vorgesehen ist, die nach Verbindung von Kassette und Gerät in eine an der Kassette vorgesehene Aussparung klappbar ist.12. Cassette according to one of claims 4-7, characterized ge indicates that in a half-shell (13) with negative pressure generation, which is part of the device, a flap (20) is provided which after connecting the cassette and device in a recess provided on the cassette is foldable.
13. Kassette nach einem der Ansprüche 4 - 7 und 12, dadurch ekennzeichnet, daß der Unterdruck durch einen Teil des schnell rotierenden Kopfrades (7) bewirkt ist.13. Cassette according to one of claims 4-7 and 12, characterized in that the negative pressure is caused by a part of the rapidly rotating head wheel (7).
14. Kassette nach einem der Ansprüche 1 - 13, dadurch ge¬ kennzeichnet, daß die die Wölbung bewirkende Rolle (12) nahe der Kante der Kassette ( 1)angeordnet ist, die der Längs st i/nselte (5) mit der Einlaufstelle zum rotierenden Kopfrad benachbart ist, und daß der Motor (21) für das Kopfrad (7) so angeordnet ist, daß das von ihm erzeugte magnetische Streufeld außerhalb des Bandbereiches liegt.14. Cassette according to one of claims 1-13, characterized ge indicates that the curling roller (12) is arranged near the edge of the cassette (1), the longitudinal st i / nselte (5) with the entry point to rotating head wheel is adjacent, and that the motor (21) for the head wheel (7) is arranged so that the magnetic stray field generated by it lies outside the band area.
15. Kassette nach einem der Ansprüche 1 - 14, dadurch gekenn¬ zeichnet, daß bei einer Breite des Bandes (4) von 8 mm und einem Trommeldurchmesser des Kopfrades von 12 mm das Band am Kop rad über einen Umschlingungswinkel von 60 - 70° gewölbt ist. - 9 -15. Cassette according to one of claims 1-14, characterized gekenn¬ characterized in that with a width of the band (4) of 8 mm and a drum diameter of the head wheel of 12 mm, the band on the cop wheel arched over a wrap angle of 60 - 70 ° is. - 9 -
l6. Kassette nach einem der Ansprüche 1 - 14, dadurch ge¬ kennzeichnet, daß bei einer Breite des Bandes (4) von 8 mm und einem Durchmesser des Kopfrades (7) von 16 mm das gewölbte Band am Kopfrad (7) über einen Winkel von 40°""anliegt.l6. Cassette according to one of claims 1 to 14, characterized in that, with a width of the band (4) of 8 mm and a diameter of the top wheel (7) of 16 mm, the curved band on the top wheel (7) over an angle of 40 ° "" is present.
17. Kassette nach einem der Ansprüche 1 - l6, dadurch ge¬ kennzeichnet, daß die für die Kopfradabtastung vorge¬ sehene Aussparung (17) in der Kassette so groß ist, daß das Kopfrad (7) in Bandtransportrichtung über wenigstens 12 von den Köpfen (7a) geschriebene Spuren längs seiner Drehachse verschiebbar ist. 17. Cassette according to one of claims 1-16, characterized ge indicates that the provided for the Kopfradabtastung recess (17) in the cassette is so large that the top wheel (7) in the tape transport direction over at least 12 of the heads ( 7a) written tracks can be moved along its axis of rotation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843421182 DE3421182A1 (en) | 1984-06-07 | 1984-06-07 | CASSETTE FOR DATA RECORDING |
DEP3421182.9 | 1984-06-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1986000164A1 true WO1986000164A1 (en) | 1986-01-03 |
Family
ID=6237816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1985/000272 WO1986000164A1 (en) | 1984-06-07 | 1985-06-05 | Cassette for data recording |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0186673A1 (en) |
DE (1) | DE3421182A1 (en) |
WO (1) | WO1986000164A1 (en) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3592976A (en) * | 1968-11-01 | 1971-07-13 | Forglo Corp | Adjustable concave guides for rotary head magnetic tape machines |
US3692255A (en) * | 1971-06-17 | 1972-09-19 | Minnesota Mining & Mfg | Belt driven tape cartridge |
DE2324656A1 (en) * | 1972-05-18 | 1973-12-06 | Westinghouse Electric Corp | HIGH SPEED TAPE REPLACEMENT DEVICE |
US4012787A (en) * | 1975-01-22 | 1977-03-15 | U.S. Philips Corporation | Video tape recorder |
FR2340596A1 (en) * | 1976-02-04 | 1977-09-02 | Philips Nv | DEVICE FOR GUIDING A MAGNETIC TAPE |
DE2633672A1 (en) * | 1976-07-27 | 1978-02-02 | Agfa Gevaert Ag | Magnetic tape cassette with screen - is in form of laminated strip with layer of flexible material and layer of soft, highly permeable material |
US4213162A (en) * | 1977-12-30 | 1980-07-15 | Lemelson Jerome H | Magnetic tape cartridge transducing apparatus and method |
US4215379A (en) * | 1977-12-15 | 1980-07-29 | Lemelson Jerome H | Cartridge magnetic recorder |
EP0022651A1 (en) * | 1979-07-05 | 1981-01-21 | Arvin Industries, Inc. | Scanning type magnetic tape recorder and cassette |
FR2495367A1 (en) * | 1980-12-02 | 1982-06-04 | Gx Holding Ag | METHOD FOR READING AND WRITING RECORDING BANDS |
US4335857A (en) * | 1980-06-24 | 1982-06-22 | Newell Research Corporation | Web aligning system |
-
1984
- 1984-06-07 DE DE19843421182 patent/DE3421182A1/en not_active Withdrawn
-
1985
- 1985-06-05 WO PCT/EP1985/000272 patent/WO1986000164A1/en unknown
- 1985-06-05 EP EP19850902542 patent/EP0186673A1/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3592976A (en) * | 1968-11-01 | 1971-07-13 | Forglo Corp | Adjustable concave guides for rotary head magnetic tape machines |
US3692255A (en) * | 1971-06-17 | 1972-09-19 | Minnesota Mining & Mfg | Belt driven tape cartridge |
DE2324656A1 (en) * | 1972-05-18 | 1973-12-06 | Westinghouse Electric Corp | HIGH SPEED TAPE REPLACEMENT DEVICE |
US4012787A (en) * | 1975-01-22 | 1977-03-15 | U.S. Philips Corporation | Video tape recorder |
FR2340596A1 (en) * | 1976-02-04 | 1977-09-02 | Philips Nv | DEVICE FOR GUIDING A MAGNETIC TAPE |
DE2633672A1 (en) * | 1976-07-27 | 1978-02-02 | Agfa Gevaert Ag | Magnetic tape cassette with screen - is in form of laminated strip with layer of flexible material and layer of soft, highly permeable material |
US4215379A (en) * | 1977-12-15 | 1980-07-29 | Lemelson Jerome H | Cartridge magnetic recorder |
US4213162A (en) * | 1977-12-30 | 1980-07-15 | Lemelson Jerome H | Magnetic tape cartridge transducing apparatus and method |
EP0022651A1 (en) * | 1979-07-05 | 1981-01-21 | Arvin Industries, Inc. | Scanning type magnetic tape recorder and cassette |
US4335857A (en) * | 1980-06-24 | 1982-06-22 | Newell Research Corporation | Web aligning system |
FR2495367A1 (en) * | 1980-12-02 | 1982-06-04 | Gx Holding Ag | METHOD FOR READING AND WRITING RECORDING BANDS |
Also Published As
Publication number | Publication date |
---|---|
DE3421182A1 (en) | 1985-12-12 |
EP0186673A1 (en) | 1986-07-09 |
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