EP0184548A1 - Ink ribbon cartridge - Google Patents

Ink ribbon cartridge Download PDF

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Publication number
EP0184548A1
EP0184548A1 EP85810453A EP85810453A EP0184548A1 EP 0184548 A1 EP0184548 A1 EP 0184548A1 EP 85810453 A EP85810453 A EP 85810453A EP 85810453 A EP85810453 A EP 85810453A EP 0184548 A1 EP0184548 A1 EP 0184548A1
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EP
European Patent Office
Prior art keywords
roller
pressure ring
drive
drive wheel
ribbon
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.)
Granted
Application number
EP85810453A
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German (de)
French (fr)
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EP0184548B1 (en
Inventor
Markus Bürgin
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.)
FRANZ BUTTNER AG
Franz Buettner AG
Original Assignee
FRANZ BUTTNER AG
Franz Buettner AG
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Publication of EP0184548A1 publication Critical patent/EP0184548A1/en
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Publication of EP0184548B1 publication Critical patent/EP0184548B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J32/00—Ink-ribbon cartridges

Definitions

  • a ribbon cassette according to the preamble of claim 1 is known from US-A-4 011 933.
  • This cassette has a drive with a drive wheel which is mounted in a stationary manner in the cassette housing and a pressure ring which is wrapped around by the ink ribbon and which is swinging on a bearing journal with play.
  • This drive is arranged on the take-up side and pulls the ink ribbon away from a supply roll via a printing location.
  • the belt tension wedges the pressure ring between the bearing journal and the drive wheel, so that the pressure of the pressure ring on the drive wheel and thus the frictional connection between the belt and drive wheel increases with increasing belt tension.
  • the invention has for its object to eliminate the aforementioned disadvantages of the prior art. This object is achieved by the characterizing features of claim 1.
  • the cassette shown in FIG. 1 has a lower housing part 1 and a cover 2, which is only indicated.
  • a supply roll 14 of an ink ribbon 4 is wound on a core 3 stored in the housing 1, 2.
  • the roller 14 is braked relative to the housing 1, 2.
  • the ink ribbon arrives in the feed direction marked with arrows via an outlet opening 5 and a printing location 6 to an inlet opening 7, from where it is drawn off by means of a drive and fed to a take-up core 12 which is also mounted in the housing 1, 2.
  • the drive comprises a drive wheel 11 wrapped in the ink ribbon 4.
  • the ink ribbon 4 is also removed from the ink ribbon wrapped pressure ring 8 pressed against the drive wheel 11.
  • the pressure ring 8 is pivotally mounted on a roller 9 which is rotatably mounted on a bearing pin 10 fixed to the housing.
  • the pressure ring 8 surrounds the roller 9 with considerable play. As a result, the pressing force of the pressing ring 8 is directed against the drive wheel 11 after the ribbon 4 is pulled between the opening 7 and the pressing ring 8.
  • the pressing ring 8 rolls on the roller 9, which results in low friction.
  • the drive wheel 11 is rotatably mounted with cylindrical pins 28, 29 in a stepped bore 26 of the lower housing part 1 and in a stepped bore 27 of the cover 2.
  • the drive wheel 11 has flanges 21, 22 with conical shoulders 23, 24 on both sides of a toothed drive cylinder 25.
  • the drive wheel 11 has a driver clutch 30 for driving by a typewriter.
  • the part of the drive wheel 11 projecting over the cover 2 has a handwheel 32 and a groove 31, in which a round cord 13 for driving the winding core 12 is inserted.
  • the pressure ring 8 has a toothing 35 which meshes with the toothing of the drive cylinder 25.
  • the roller 9 is formed symmetrically to its radial center plane.
  • a cylindrical A npress Design 40 includes both sides of a cone 41, the depending merges into a cylindrical boss 42nd
  • the difference between the radii of the surface 40 and the lugs 42 is greater than the radial width of the flanges 21, 22. This ensures that with the roller 9 removed and the pressure ring 8 pressed onto the bearing pin 10, the ink ribbon 4 effortlessly from above between the pressure ring 8 and the drive cylinder 25 can be inserted.
  • the roller 9 is only placed on the bearing journal 10 subsequently, the pressure ring 8 being automatically displaced between the flanges 21, 22 by the cone 41. In both cases, assembly is considerably easier compared to the prior art mentioned.
  • the embodiment according to FIG. 3 corresponds essentially to that according to FIG. 2 with the difference that the conical surfaces are mainly provided on the pressure ring 8 ".
  • the pressure ring 8" has a cylindrical inner surface 46. Via a cone 45, this goes into one side on both sides extended cylindrical approach 44 over.
  • the cylindrical The pressure surface 47 of the roller 9 "merges into a conically tapered surface 48 on both sides.
  • the radial displacement of the pressure ring 8" that can be achieved by the conical surfaces 45, 48 is greater than the radial width of the flanges 21, 22.
  • FIG. 6 shows a partial view of a further embodiment of the invention. It is a cassette with an endless, textile ink ribbon 4, which is drawn off in the direction of the arrow from an inlet opening, not shown, via a roller 56.
  • the roller 56 is mounted on a pin 57 which is integral with the lower housing part 1.
  • the drive in turn comprises a pressure ring 8, which is pivotally mounted on a roller 9, and a drive wheel 11.
  • the roller 9 is mounted on a bearing pin 10.
  • the ribbon 4 wraps around the pressure ring 8 and the drive wheel 11 along part of its circumference. It is pressed against the drive wheel 11 at the outlet end by means of a spring 51.
  • the spring 51 is tensioned between the drive wheel 11, a pressing cam 54 fixed to the housing and an abutment 55 fixed to the housing and secured against longitudinal displacement by a retaining cam 53.
  • the ribbon 4 is fed to a magazine 50 by the drive in loose loops.
  • One leg 52 of the spring 51 prevents the loose loops from passing through to the drive side of the drive.
  • the roller 9 is mounted on a bearing pin 10 fixed to the housing.

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  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

Die Kassette hat einen Antrieb für das Farbband (4), umfassend ein im Gehäuse (1, 2) drehbar gelagertes Treibrad (11) und einen Anpressring (8). Der Anpressring (8) ist auf einer Rolle (9) pendelnd gelagert. Die Rolle (9) ist um einen gehäusefesten Lagerzapfen (10) drehbar. Der Anpressring (8) stützt sich einerseits gegen die Rolle (9), andererseits gegen das Treibrad (11) ab, wobei der Anpressdruck mit steigendem Zug im Farbband (4) zunimmt.The cassette has a drive for the ink ribbon (4), comprising a drive wheel (11) rotatably mounted in the housing (1, 2) and a pressure ring (8). The pressure ring (8) is pivotally mounted on a roller (9). The roller (9) is rotatable about a bearing journal (10) fixed to the housing. The pressure ring (8) is supported on the one hand against the roller (9) and on the other hand against the drive wheel (11), the contact pressure increasing with increasing tension in the ink ribbon (4).

Durch die Zwischenschaltung der Rolle (9) wird eine einfache Montage und eine geringe Reibung erzielt. Die Kassette eignet sich vor allem für Schreibmaschinen.

Figure imgaf001
By interposing the roller (9), simple assembly and low friction are achieved. The cassette is particularly suitable for typewriters.
Figure imgaf001

Description

Eine Farbbandkassette gemäss Oberbegriff des Anspruchs 1 ist aus der US-A-4 011 933 bekannt. Diese Kassette hat einen Antrieb mit einem im Kassettengehäuse ortsfest gelagerten Treibrad und einem vom Farbband umschlungenen, auf einem Lagerzapfen mit Spiel pendelnd gelagerten Anpressring. Dieser Antrieb ist auf der Aufwickelseite angeordnet und zieht das Farbband von einer Vorratsrolle her über einen Druckort weg ab. Die Bandspannung verkeilt den Anpressring zwischen dem Lagerzapfen und dem Treibrad, so dass der Anpressdruck des Anpressrings auf das Treibrad und damit der Kraftschluss zwischen Band und Treibrad mit zunehmender Bandspannung wächst.A ribbon cassette according to the preamble of claim 1 is known from US-A-4 011 933. This cassette has a drive with a drive wheel which is mounted in a stationary manner in the cassette housing and a pressure ring which is wrapped around by the ink ribbon and which is swinging on a bearing journal with play. This drive is arranged on the take-up side and pulls the ink ribbon away from a supply roll via a printing location. The belt tension wedges the pressure ring between the bearing journal and the drive wheel, so that the pressure of the pressure ring on the drive wheel and thus the frictional connection between the belt and drive wheel increases with increasing belt tension.

Dieser Antrieb hat sich gut bewährt. Nachteilig ist jedoch, dass das Einfädeln des Farbbandes zwischen Anpressring und Treibrad sehr schwierig ist, wenn das Treibrad Flansche zur Führung des Farbbandes hat, die den Anpressring notwendigerweise übergreifen. Nachteilig ist ferner die Gleitreibung des Anpressrings auf dem Lagerzapfen, die ebenfalls mit zunehmender Bandspannung wächst. Wegen dieser unerwünschten Gleitreibung muss der Anpressring einen niedrigen Reibungskoeffizienten aufweisen, was die Materialwahl stark einschränkt. Für Mehrfachüberschreibungen des Farbbandes ist es erwünscht, Kassetten mit unterschiedlichem Bandvorschub, also unterschiedlichem Durchmesser des Treibrades, vorzusehen. Dies ist bei der bekannten Kassette nur durch Versetzen des Lagerzapfens relativ zur Achse des Treibrades möglich und bedingt deshalb für jede Untersetzung ein anderes Gehäuse.This drive has proven itself well. However, it is disadvantageous that threading the ink ribbon between the pressure ring and drive wheel is very difficult if the drive wheel has flanges for guiding the ink ribbon, which necessitate the pressure ring spread wisely. Another disadvantage is the sliding friction of the pressure ring on the bearing journal, which also increases with increasing belt tension. Because of this undesirable sliding friction, the pressure ring must have a low coefficient of friction, which severely limits the choice of material. For multiple overwriting of the ink ribbon, it is desirable to provide cartridges with different ribbon feed, that is, different diameters of the drive wheel. In the known cassette, this is only possible by displacing the bearing journal relative to the axis of the drive wheel and therefore requires a different housing for each reduction.

Der Erfindung liegt die Aufgabe zugrunde, die vorstehend erwähnten Nachteile des Standes der Technik zu beseitigen. Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The invention has for its object to eliminate the aforementioned disadvantages of the prior art. This object is achieved by the characterizing features of claim 1.

Aus der US-A 3 1000 591 ist eine Vorrichtung zum Antreiben von Lochbändern für Datenverarbeitungsmaschinen bekannt, in welcher das Lochband zwischen zwei Ringen durchgeführt ist. Der eine Ring ist ortsfest auf drei angetriebenen Rollen gelagert. Der andere Ring ist aus permanentmagnetischem Material und ist pendelnd gegen eine gegenläufig angetriebene Rolle angepresst. Durch Wahl der Polarität eines Elektromagneten kann er gegen den ersten Ring angedrückt oder von diesem abgehoben werden, so dass der Bandantrieb wahlweise eingeschaltet werden kann. Der pendelnde Ring wird vom Lochband nicht umschlungen, so dass seine Anpresskraft unabhängig vom Bandzug ist.From US-A 3 1000 591 a device for driving perforated tapes for data processing machines is known, in which the perforated tape is carried out between two rings. One ring is fixed on three driven rollers. The other ring is made of permanent magnetic material and is pressed against an oppositely driven roller. By selecting the polarity of an electromagnet, it can be pressed against or lifted from the first ring, so that the belt drive can optionally be switched on. The pendulum ring is not wrapped around the perforated band, so that its contact pressure is independent of the band tension.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung erläutert. Darin zeigen:

  • Fig. 1 eine Draufsicht auf eine Farbbandkassette mit teilweise entferntem Deckel,
  • Fig. 2 einen Querschnitt durch den Antrieb der Kassette nach Fig. l,
  • Fig. 3 eine Variante des Antriebs nach Fig. 2,
  • Fig. 4 und Fig. 5 die Draufsicht auf den Antrieb mit zwei unterschiedlichen Bandvorschüben, und
  • Fig. 6 die Draufsicht auf eine Kassette mit einem Endlos-Farbband.
Exemplary embodiments of the invention are explained below with reference to the drawing. In it show:
  • 1 is a plan view of an ink ribbon cassette with the cover partially removed,
  • 2 shows a cross section through the drive of the cassette according to FIG. 1,
  • 3 shows a variant of the drive according to FIG. 2,
  • Fig. 4 and Fig. 5 is a top view of the drive with two different tape feeds, and
  • Fig. 6 is a plan view of a cassette with an endless ribbon.

Die in Fig. 1 dargestellte Kassette hat einen Gehäuseunterteil 1 und einen nur angedeuteten Deckel 2. Eine Vorratsrolle 14 eines Farbbandes 4 ist auf einem im Gehäuse 1, 2 gelagerten Kern 3 aufgewickelt. Zur Erzielung einer definierten Bandspannung ist die Rolle 14 gegenüber dem Gehäuse 1, 2 gebremst. Das Farbband gelangt in der mit Pfeilen markierten Vorschubrichtung über eine Austrittsöffnung 5 und einen Druckort 6 zu einer Eintrittsöffnung 7, von wo es mittels eines Antriebs abgezogen und einem ebenfalls im Gehäuse 1, 2 gelagerten Aufwickelkern 12 zugeführt wird.The cassette shown in FIG. 1 has a lower housing part 1 and a cover 2, which is only indicated. A supply roll 14 of an ink ribbon 4 is wound on a core 3 stored in the housing 1, 2. To achieve a defined belt tension, the roller 14 is braked relative to the housing 1, 2. The ink ribbon arrives in the feed direction marked with arrows via an outlet opening 5 and a printing location 6 to an inlet opening 7, from where it is drawn off by means of a drive and fed to a take-up core 12 which is also mounted in the housing 1, 2.

Der Antrieb umfasst ein vom Farbband 4 umschlungenes Treibrad 11. Das Farbband 4 wird durch einen ebenfalls vom Band umschlungenen Anpressring 8 gegen das Treibrad 11 gedrückt. Der Anpressring 8 ist auf einer Rolle 9 pendelnd gelagert, die auf einem gehäusefesten Lagerzapfen 10 drehbar gelagert ist. Der Anpressring 8 umgibt die Rolle 9 mit erheblichem Spiel. Dadurch richtet sich die Anpresskraft des Anpressrings 8 gegen das Treibrad 11 nach dem Zug des Farbbandes 4 zwischen der Oeffnung 7 und dem Anpressring 8. Beim Vorschub des Farbbandes 4 rollt der Anpressring 8 auf der Rolle 9 ab, was eine geringe Reibung ergibt.The drive comprises a drive wheel 11 wrapped in the ink ribbon 4. The ink ribbon 4 is also removed from the ink ribbon wrapped pressure ring 8 pressed against the drive wheel 11. The pressure ring 8 is pivotally mounted on a roller 9 which is rotatably mounted on a bearing pin 10 fixed to the housing. The pressure ring 8 surrounds the roller 9 with considerable play. As a result, the pressing force of the pressing ring 8 is directed against the drive wheel 11 after the ribbon 4 is pulled between the opening 7 and the pressing ring 8. When the ribbon 4 is fed, the pressing ring 8 rolls on the roller 9, which results in low friction.

Wie aus Fig. 2 ersichtlich ist, ist das Treibrad 11 mit zylindrischen Zapfen 28, 29 in einer abgestuften Bohrung 26 des Gehäuseunterteils 1 sowie einer abgestuften Bohrung 27 des Deckels 2 drehbar gelagert. Zur Führung des Farbbandes 4 weist das Treibrad 11 beidseitig eines verzahnten Treibzylinders 25 Flansche 21, 22 mit konischen Schultern 23, 24 auf. Unten hat das Treibrad 11 eine Mitnehmerkupplung 30 zum Antrieb durch eine Schreibmaschine. Der über den Deckel 2 ragende Teil des Treibrades 11 hat ein Handrad 32 sowie eine Nut 31, in welche eine Rundschnur 13 zum Antrieb des Aufwickelkerns 12 eingelegt ist. Der Anpressring 8 hat eine mit der Verzahnung des Treibzylinders 25 kämmende Verzahnung 35.As can be seen from FIG. 2, the drive wheel 11 is rotatably mounted with cylindrical pins 28, 29 in a stepped bore 26 of the lower housing part 1 and in a stepped bore 27 of the cover 2. In order to guide the ink ribbon 4, the drive wheel 11 has flanges 21, 22 with conical shoulders 23, 24 on both sides of a toothed drive cylinder 25. At the bottom the drive wheel 11 has a driver clutch 30 for driving by a typewriter. The part of the drive wheel 11 projecting over the cover 2 has a handwheel 32 and a groove 31, in which a round cord 13 for driving the winding core 12 is inserted. The pressure ring 8 has a toothing 35 which meshes with the toothing of the drive cylinder 25.

Bei der Ausführungsform nach Fig. 2 ist die Rolle 9 symmetrisch zu ihrer radialen Mittelebene ausgebildet. Einer zylindrischen Anpressfläche 40 schliesst beidseits ein Konus 41 an, der je in einen zylindrischen Ansatz 42 übergeht. Die Differenz der Radien der Fläche 40 und der Ansätze 42 ist grösser als die radiale Breite der Flansche 21, 22. Dadurch wird erreicht, dass bei entfernter Rolle 9 und an den Lagerzapfen 10 angedrücktem Anpressring 8 das Farbband 4 mühelos von oben zwischen den Anpressring 8 und den Treibzylinder 25 eingeführt werden kann. Andererseits ist es auch möglich, den Treibzylinder bei eingelegtem Farbband 4 in Achsrichtung in den Unterteil 1 einzuführen. In beiden Fällen wird erst nachträglich die Rolle 9 auf den Lagerzapfen 10 aufgesetzt, wobei der Anpressring 8 durch den Konus 41 selbsttätig zwischen die Flansche 21, 22 verschoben wird. In beiden Fällen ist die Montage gegenüber dem erwähnten Stand der Technik wesentlich erleichtert.In the embodiment according to FIG. 2, the roller 9 is formed symmetrically to its radial center plane. A cylindrical A npressfläche 40 includes both sides of a cone 41, the depending merges into a cylindrical boss 42nd The difference between the radii of the surface 40 and the lugs 42 is greater than the radial width of the flanges 21, 22. This ensures that with the roller 9 removed and the pressure ring 8 pressed onto the bearing pin 10, the ink ribbon 4 effortlessly from above between the pressure ring 8 and the drive cylinder 25 can be inserted. On the other hand, it is also possible to insert the drive cylinder into the lower part 1 in the axial direction with the ink ribbon 4 inserted. In both cases, the roller 9 is only placed on the bearing journal 10 subsequently, the pressure ring 8 being automatically displaced between the flanges 21, 22 by the cone 41. In both cases, assembly is considerably easier compared to the prior art mentioned.

Die Ausführungsform nach Fig. 3 entspricht im wesentlichen jener nach Fig. 2 mit dem Unterschied, dass die konischen Flächen hauptsächlich am Anpressring 8" vorgesehen sind. Der Anpressring 8" hat eine zylindrische Innenfläche 46. Ueber je einen Konus 45 geht diese beidseitig in einen erweiterten zylindrischen Ansatz 44 über. Die zylindrische Anpressfläche 47 der Rolle 9" geht beidseits in eine konisch verjüngte Fläche 48 über. Auch hier ist die durch die konischen Flächen 45, 48 erzielbare Radialverschiebung des Anpressrings 8" grösser als die radiale Breite der Flansche 21, 22.The embodiment according to FIG. 3 corresponds essentially to that according to FIG. 2 with the difference that the conical surfaces are mainly provided on the pressure ring 8 ". The pressure ring 8" has a cylindrical inner surface 46. Via a cone 45, this goes into one side on both sides extended cylindrical approach 44 over. The cylindrical The pressure surface 47 of the roller 9 "merges into a conically tapered surface 48 on both sides. Here too, the radial displacement of the pressure ring 8" that can be achieved by the conical surfaces 45, 48 is greater than the radial width of the flanges 21, 22.

Aus den Fig. 4 und 5 ist ersichtlich, dass der Farbbandvorschub unter Beibehaltung des Abstandes A des Lagerzapfens 10 von der Achse des Treibrades 11 dadurch variiert werden kann, dass das Treibrad 11 gegen ein anderes Treibrad 11' mit kleinerem Durchmesser B' des Treibzylinders 25' und gleichzeitig die Rolle 9 gegen eine Rolle 9' mit entsprechend grösserem Aussendurchmesser C' ausgetauscht wird.4 and 5 that the ribbon feed can be varied while maintaining the distance A of the bearing journal 10 from the axis of the drive wheel 11 in that the drive wheel 11 against another drive wheel 11 'with a smaller diameter B' of the drive cylinder 25 'and at the same time, the roller 9 against a roller 9' is replaced with a correspondingly higher ussendurchmesser a C '.

In Fig. 6 ist eine Teilansicht einer weiteren Ausführungsform der Erfindung dargestellt. Es handelt sich um eine Kassette mit einem endlosen, textilen Farbband 4, das in Pfeilrichtung von einer nicht dargestellten Eintrittsöffnung über eine Rolle 56 abgezogen wird. Die Rolle 56 ist auf einem mit dem Gehäuseunterteil 1 einstückigen Stift 57 gelagert. Der Antrieb umfasst wiederum einen Anpressring 8, der auf einer Rolle 9 pendelnd gelagert ist, und ein Treibrad 11. Die Rolle 9 ist auf einem Lagerzapfen 10 gelagert. Das Farbband 4 umschlingt den Anpressring 8 und das Treibrad 11 längs eines Teils ihres Umfangs. Es wird am Austrittsende mittels einer Feder 51 gegen das Treibrad 11 gedrückt. Die Feder 51 ist zwischen dem Treibrad 11, einem gehäusefesten Anpressnocken 54 und einem gehäusefesten Widerlager 55 gespannt und durch einen Rückhaltenocken 53 gegen Längsverschiebung gesichert. Das Farbband 4 wird durch den Antrieb in losen Schleifen einem Magazin 50 zugeführt. Ein Schenkel 52 der Feder 51 verhindert den Durchtritt der losen Schleifen zur Antriebsseite des Antriebs.6 shows a partial view of a further embodiment of the invention. It is a cassette with an endless, textile ink ribbon 4, which is drawn off in the direction of the arrow from an inlet opening, not shown, via a roller 56. The roller 56 is mounted on a pin 57 which is integral with the lower housing part 1. The drive in turn comprises a pressure ring 8, which is pivotally mounted on a roller 9, and a drive wheel 11. The roller 9 is mounted on a bearing pin 10. The ribbon 4 wraps around the pressure ring 8 and the drive wheel 11 along part of its circumference. It is pressed against the drive wheel 11 at the outlet end by means of a spring 51. The spring 51 is tensioned between the drive wheel 11, a pressing cam 54 fixed to the housing and an abutment 55 fixed to the housing and secured against longitudinal displacement by a retaining cam 53. The ribbon 4 is fed to a magazine 50 by the drive in loose loops. One leg 52 of the spring 51 prevents the loose loops from passing through to the drive side of the drive.

In den dargestellten Ausführungsbeispielen ist die Rolle 9 auf einem gehäusefesten Lagerzapfen 10 gelagert. Es ist jedoch auch möglich, den Lagerzapfen 10 starr mit der Rolle 9 zu verbinden und in einer Bohrung 43 im Deckel 2 und einer entsprechenden Bohrung im Unterteil 1 drehbar zu lagern.In the illustrated embodiments, the roller 9 is mounted on a bearing pin 10 fixed to the housing. However, it is also possible to rigidly connect the bearing pin 10 to the roller 9 and to rotate it in a bore 43 in the cover 2 and a corresponding bore in the lower part 1.

Claims (8)

1. Farbbandkassette mit einem Antrieb umfassend ein in einem Gehäuse (1,2) drehbar gelagertes Treibrad (11) und einen vom Farbband (4) umschlungenen, auf einem Element mit Spiel pendelnd gelagerten Anpressring (8), dadurch gekennzeichnet, dass das Element eine im Gehäuse (1,2) frei drehbar gelagerte Rolle (9) ist, gegen welche sich der Anpressring (8) abstützt.1. Ribbon cassette with a drive comprising a drive wheel (11) rotatably mounted in a housing (1, 2) and a pressure ring (8) wrapped around the ribbon (4) and swinging on an element with play, characterized in that the element is a in the housing (1, 2) there is a freely rotatable roller (9) against which the pressure ring (8) is supported. 2. Farbbandkassette nach Anspruch 1, dadurch gekennzeichnet, dass die Rolle (9) auf einem gehäusefesten Lagerzapfen (10) gelagert ist.2. Ribbon cassette according to claim 1, characterized in that the roller (9) is mounted on a housing-fixed bearing journal (10). 3. Kassette nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rolle (9) von einer zylindrischen Anpressfläche (40) aus mindestens auf einer Seite konisch verjüngt ist.3. Cassette according to claim 1 or 2, characterized in that the roller (9) from a cylindrical contact surface (40) is tapered at least on one side. 4. Kassette nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Innenfläche des Anpressrings (8") von einer zylindrischen Fläche (46) aus mindestens auf einer Seite konisch erweitert ist.4. Cassette according to one of claims 1 to 3, characterized in that the inner surface of the pressure ring (8 ") from a cylindrical surface (46) is flared at least on one side. 5. Kassette nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Treibrad (11) beidseitig eines vom Farbband (4) umschlungenen Treibzylinders (25) je einen Flansch (21,22) zur Führung des Farbbandes (4) aufweist.5. Cassette according to one of claims 1 to 4, characterized in that the drive wheel (11) on both sides of a ribbon (4) wrapped around the drive cylinder (25) each has a flange (21,22) for guiding the ribbon (4). 6. Kassette nach den Ansprüchen 3 und 5, dadurch gekennzeichnet, dass die Differenz der Radien der Anpressfläche (40) und der Stirnseite der Rolle (9) mindestens so gross ist wie die radiale Breite der Flansche (21,22).6. Cassette according to claims 3 and 5, characterized in that the difference between the radii of the contact surface (40) and the end face of the roller (9) is at least as large as the radial width of the flanges (21, 22). 7, Kassette nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der Treibzylinder (25) verzahnt ist.7, cassette according to claim 4 or 5, characterized in that the drive cylinder (25) is toothed. 8. Kassette nach Anspruch 6, dadurch gekennzeichnet, dass der Anpressring (8) am Aussenumfang eine mit der Verzahnung des Treibzylinders (25) kämmende Verzahnung (35) aufweist. 8 . Cassette according to claim 6, characterized in that the pressure ring (8) has on the outer circumference a toothing (35) which meshes with the toothing of the drive cylinder (25).
EP85810453A 1984-11-23 1985-10-04 Ink ribbon cartridge Expired EP0184548B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5616/84A CH665802A5 (en) 1984-11-23 1984-11-23 RIBBON CASSETTE.
CH5616/84 1984-11-23

Publications (2)

Publication Number Publication Date
EP0184548A1 true EP0184548A1 (en) 1986-06-11
EP0184548B1 EP0184548B1 (en) 1989-01-11

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Application Number Title Priority Date Filing Date
EP85810453A Expired EP0184548B1 (en) 1984-11-23 1985-10-04 Ink ribbon cartridge

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US (1) US4732500A (en)
EP (1) EP0184548B1 (en)
JP (1) JPS61132373A (en)
CH (1) CH665802A5 (en)
DE (1) DE3567409D1 (en)

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US5048986A (en) * 1990-05-18 1991-09-17 Ncr Corporation Self aligning inking roll for a printer
JPH04112480U (en) * 1991-03-18 1992-09-30 ヒロセ電機株式会社 Horizontal connector structure
JP2560143Y2 (en) * 1991-07-10 1998-01-21 日本航空電子工業株式会社 FPC connector
EP0694416B1 (en) * 1994-07-08 1998-01-28 Fullmark Pte Ltd Ribbon cartridge
JP2000141840A (en) * 1998-11-10 2000-05-23 Alps Electric Co Ltd Ribbon cassette
US6835012B1 (en) * 2002-09-04 2004-12-28 International Imaging Materials Inc. Ribbon cassette

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Also Published As

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JPS61132373A (en) 1986-06-19
CH665802A5 (en) 1988-06-15
DE3567409D1 (en) 1989-02-16
US4732500A (en) 1988-03-22
EP0184548B1 (en) 1989-01-11

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