EP0179202B1 - Ink ribbon cartridge for type writers or similar business machines - Google Patents

Ink ribbon cartridge for type writers or similar business machines Download PDF

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Publication number
EP0179202B1
EP0179202B1 EP85109240A EP85109240A EP0179202B1 EP 0179202 B1 EP0179202 B1 EP 0179202B1 EP 85109240 A EP85109240 A EP 85109240A EP 85109240 A EP85109240 A EP 85109240A EP 0179202 B1 EP0179202 B1 EP 0179202B1
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EP
European Patent Office
Prior art keywords
reel
take
cassette according
cassette
bearer plate
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
EP85109240A
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German (de)
French (fr)
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EP0179202A1 (en
Inventor
Arthur Kittel
Dieter Hellebrandt
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.)
Olympia Office Vertriebsgesellschaft Mbh
AEG Olympia Office GmbH
Original Assignee
AEG Olympia AG
AEG Olympia Office GmbH
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Publication date
Application filed by AEG Olympia AG, AEG Olympia Office GmbH filed Critical AEG Olympia AG
Publication of EP0179202A1 publication Critical patent/EP0179202A1/en
Application granted granted Critical
Publication of EP0179202B1 publication Critical patent/EP0179202B1/en
Expired legal-status Critical Current

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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

  • the cup-shaped base part and cover plate are provided with holes. Through these holes, the noise build-up is reduced and the noise level inside the housing is reduced, but the abrasion caused by the guidance and the drive of the used carbon ribbon falls through the holes in the bottom of the base part and contaminates the machine parts underneath.
  • Such contamination is avoided in the ribbon cassette according to EP-A-0054182 in that the soundproofing means of the base plate consist of depressions, the base of which is closed by a membrane.
  • the base has circumferential collars around the openings and additional support surfaces for the winding of the supply and winding spools. However, no stiffening ribs are provided for the winding of the flangeless coils.
  • a ribbon cassette is known from DE-U 8406300, in which the support for the spool plates of the supply and take-up spools consist of a plurality of circular webs separated from one another by gaps.
  • stiffening ribs which serve to guide the winding layers of the winding and unwinding spool and to guide the displaceable winding spool.
  • stiffening ribs are also not provided in the ribbon cassette of DE-U 8310441.
  • This ribbon cassette only discloses a guide slot which is provided on the side with protruding strips for guiding a carrier with two ribbon spools.
  • a ribbon cassette has also been disclosed by US Pat. No. 4,350,451, in which a longitudinally displaceable guide part is acted upon by a spring device such that the winding spool is pressed securely against a drive wheel.
  • the invention has for its object to provide an ink ribbon cassette, by which the noise accumulation in the interior of the housing is effectively reduced and by which the abrasion of the used ink ribbon from openings in the bottom part of the cassette housing is reliably avoided.
  • the cassette should be of a compact design and enable the supply and take-up spools to be driven easily, with the abrasion on the used ink ribbon being kept to a minimum.
  • an ink ribbon cassette 1 is arranged ready for operation on a receiving device 2 of a typewriter or similar office machine, which is arranged to be displaceable along a record carrier 3.
  • the record carrier 3 can be transported in a known manner via a paper roller 4.
  • the ribbon 6 emerging from an exit slot 5 of the ribbon cassette 1 is unwound from a supply spool 7 and passed between the recording medium 3 and a type carrier 11 via a tensioning lever 8 and ribbon guides 9, 10.
  • the type carrier 11 is e.g. a type wheel with a plurality of radial slots, whereby elastic webs are formed, at the ends of which a type is arranged.
  • the setting of the type wheel 11 takes place via a stepping motor, not shown, which is also arranged on the receiving device 2.
  • the printing of the characters takes place via a printing hammer which is displaceably mounted on the receiving device 2, which e.g. is driven by an electromagnet.
  • the ink ribbon 6 is guided via the guide 10 into an inlet slot 12 of the cassette housing consisting of a pot-shaped base part 13 and a cover 15 provided with openings 14. Then the ribbon 6, e.g. consists of a carbon tape that can only be used once, is guided via a barrel-shaped deflection roller 16 to a take-up reel 17.
  • This take-up reel 17 is rotatably supported by a hub 18 on a bearing pin 19 which is fixedly connected to a carrier plate 20.
  • This carrier plate 20 is slidably mounted on the bottom 22 of the base part 13 with a sliding surface 21, the sliding surface 21 having two spaced-apart guide pins 23, 24 for a longitudinal slot 25 penetrating the bottom 22.
  • the supply spool 7 is rotatably mounted on a bearing axis 26 arranged vertically on the base 22, to which an annular stiffening rib 27 is concentrically aligned and outside of this stiffening rib 27 further stiffening ribs 28, 29 and 30 are radially aligned.
  • the winding 31 is rotatably mounted on the rounded stiffening ribs 28, 29, 30 and the core of the supply reel 7 is rotatably mounted on the annular stiffening rib 27.
  • the cover 15 has appropriately designed stiffening ribs 32, 33, 34 and 35, which also serve to support the winding 31. This will shift the winding positions of the winding 31 of the supply reel 7 e.g. safely prevented when shipping the cassette 1. This exact guidance of the supply reel 7, including its winding 31, considerably reduces abrasion of the ink ribbon on the guide parts of the cassette 1.
  • the supply spool 7 has a hub 36, which is wrapped by a shaped wire designed as a clamping lever 8 with two free legs 37 and 38.
  • One leg 37 of this shaped wire is firmly anchored to the free end 39 of a recess .40 of the bottom part 13 of the cassette housing, while the other leg 38 is freely movable and has a rotatably mounted deflection roller 42 at its free end 41.
  • the movable leg 38 moves away from the fixed leg 37 of the shaped wire in such a way that the static friction between the shaped wire and the hub 36 of the supply reel 7 is eliminated. This release of the supply spool 7 enables the ink ribbon 6 to be easily unwound from this supply spool 7.
  • stiffening ribs 44, 45 and 46 In order to prevent ribbon abrasion from falling out of the longitudinal slot 25 of the base part 13 of the cassette housing, the latter is surrounded by raised stiffening ribs 44, 45 and 46.
  • a stiffening rib 44 and 45 is arranged parallel to the direction of displacement of the rectangular support plate 20 on each side of the longitudinal slot 25.
  • the ends 47, 48, 49, 50 of these stiffening ribs 44 and 45 are fixedly connected on the one hand to the annular stiffening rib 27 and on the other hand to a stiffening rib 46 arranged perpendicular to the direction of movement of the carrier plate 20.
  • the stiffening ribs 44, 45 arranged on the floor 22 on both sides of the longitudinal sides 51, 52 of the carrier plate 20 have mutually directed legs 53, 54 which reliably prevent the displaceable carrier plate 20 from tilting with the take-up reel 17, see FIG. 4.
  • the leg 53 has incidentally, at the same time, a support surface 55 for the winding 31 of the supply reel 7.
  • the base part 13, together with the stiffening ribs 28, 29, 30, has four support surfaces for the winding 31 which are offset by 90 °, thereby reliably preventing the individual layers of the winding 31 from shifting.
  • the bottom 22 in the bottom part 13 of the cassette housing has blind holes 56 for soundproofing, two openings 57 and 58 for latching locking elements in the receiving device in the machine and a further opening 59 for sensing elements for scanning on the ribbon.
  • the winding 61 of the take-up reel 17 can be supported in the bottom part on the stiffening rib 46 and on a bearing rib 60 extending from the other end of the carrier plate 20 and running in the direction of the bearing journal 19 such that the individual layers of the ink ribbon 6 do not oppose one another during winding move.
  • the bearing pin 19 for the take-up spool 17 is movably arranged with an extension 62 in a continuous longitudinal slot 63 of the cover 15 arranged in the direction of displacement of the carrier plate 20, as a result of which the ribbon supply is indicated.
  • the longitudinal slot 63 in the cover 15 has a circumferential collar 64 on the inside, which at the same time serves to support the winding 61 of the take-up reel 17.
  • the transport roller 65 has a spike wheel 66 which engages with the winding 61 of the take-up reel 17, and is at one end 67 with a hollow pin 68 on a collar 70 surrounding an opening 69 in the bottom 22 and at the other end 71 with in one Handwheel 72 rotatably arranged centrally arranged bearing bore 73 for a centering pin 74 on the inside 75 of the cover 15.
  • the end face 76 of the handwheel 72 on the transport roller 65 is provided with corrugations 77, a part of this end face 76 being arranged so as to protrude from a circular opening 78 in the cover 15. This makes it possible to rotate the transport roller 65 via the handwheel 72, which enables the ink ribbon 6 to be wound onto the take-up spool 17.
  • the opening 78 in the lid 15 is located in a circular recess 79 on the lid edge 80 such that the end face 76 of the handwheel 72 does not protrude from the rest of the surface of the lid 15.
  • the stiffening rib 46 on the bottom 22 of the bottom part 13 is designed in such a way and arranged in such a way that the abrasion of the ink ribbon 6 that occurs when the sprocket 66 winds up cannot fall out of the openings 58, 59 and 25.
  • the opening 69 is shielded from abrasion by the collar 70.
  • the locking opening 57 in the bottom 22 of the bottom part 13 is shielded by a stiffening rib 81 which, on the one hand, is firmly connected to the stiffening rib 30 and, on the other hand, has an extension rib 82 arranged concentrically with the supply spool.
  • the resilient leg 38 is slidably mounted on this extension rib 82, as a result of which this leg 38 is easily movable due to the low friction.
  • the carrier plate 20 is acted upon by a spring device such that the winding 61 of the take-up spool 17 is always held in engagement with the sprocket wheel 66 of the transport roller 65.
  • This spring device consists of a leg spring 83 which is mounted on a pin 84 and has a fixedly arranged first leg 85 and a resilient second leg 86. The second leg 86 rests on a shoulder 87 on the bearing pin 19 for the take-up spool 17, see FIGS. 3 and 5.

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  • Impression-Transfer Materials And Handling Thereof (AREA)

Description

Die Erfindung betrifft eine Farbbandkassette für eine Schreib- oder ähnliche Büromachine der im Gattungsbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to an ink ribbon cassette for a writing or similar office machine of the type specified in the preamble of claim 1.

Unter den zahlreichen bekannten Massnahmen zur Dämpfung der in der Umgebung von Schreibmaschinen und ähnlichen druckenden Maschinen wahrnehmbaren Geräusche kommt denjenigen Einrichtungen besondere Bedeutung zu, durch welche die beim Aufschlagen der Typen auf das Papier entstehenden Anschlaggeräusche gegen die in der Nähe der Maschine befindlichen Personen abgeschirmt werden. Als besonders wirksam haben sich hierbei sogenannte Schallschluckhauben erwiesen, die entweder die gesamte Maschine aufnehmen oder die nur im Bereich der Papierzuführung oberhalb der Schreibwalze aufgesetzt werden können. Bei den die Maschinen ganz aufnehmenden Schallschluckhauben ist zwar die Beobachtung des geschriebenen Textes durch ein Sichtfenster möglich, aber die Zugänglichkeit zum Einlegen und Ausrichten des Papiers und für Korrekturen ist ausserordentlich umständlich. Aus diesem Grunde sind derartige Schallschluckhauben für Büros mit häufigem Einsetzen von neuen Briefbögen nicht geeignet.Among the numerous known measures for attenuating the noises perceptible in the vicinity of typewriters and similar printing machines, those devices are of particular importance by means of which the impact noises which occur when the types are opened onto the paper are shielded against the people in the vicinity of the machine. So-called sound-absorbing hoods have proven to be particularly effective, which either hold the entire machine or can only be placed in the area of the paper feed above the platen roller. In the case of the sound absorbing hoods that completely absorb the machines, it is possible to observe the written text through a viewing window, but the accessibility for inserting and aligning the paper and making corrections is extremely cumbersome. For this reason, acoustic hoods of this type are not suitable for offices with frequent insertion of new letterheads.

Bei Abdeckungen, die nur auf die Papierzuführung und -entnahme im Bereich der Schreibwalze aufgesetzt werden, ist zwar im allgemeinen die Handhabung des Papiers für den Bediener der Maschine erleichtert, jedoch häufig mit der Folge, dass die Geräuschdämpfung nicht mit der erwünschten Wirkung erzielt werden kann. Während bei dieser Art von Schallschluckhauben die Beobachtungsmöglichkeit des gedruckten Textes durch den Bediener im allgemeinen befriedigend ist, besteht ein besonderes Problem in der Zugänglichkeit des Druckwerkes zum Wechseln des Typenrades und der Farbbandkassette. Ausserdem sind die die Schreibwalze abdeckenden Schallschluckhauben für billige Korrespondenzmaschinen zu teuer.In the case of covers which are only placed on the paper feed and removal in the area of the platen roller, the handling of the paper is generally easier for the operator of the machine, but often with the result that the noise reduction cannot be achieved with the desired effect . While with this type of sound-absorbing hood the operator's ability to observe the printed text is generally satisfactory, there is a particular problem with the accessibility of the printing unit for changing the type wheel and the ribbon cassette. In addition, the sound absorption hoods covering the platen are too expensive for cheap correspondence machines.

Wird ausserdem eine Maschine, insbesondere eine elektrische Schreibmaschine von einem Gehäuse umgeben, so entsteht im Innern des Gehäuses ein Schallstau und damit eine Erhöhung der Geräuschstärke. Die von innen auf das Gehäuse oder auf flächige Bauteile auftreffenden Schallwellen regen die schwingungsfähigen Teile zu Schwingungen an, die wiederum die Ursache für das nach aussen abgegebene Maschinengeräusch sind.If, in addition, a machine, in particular an electric typewriter, is surrounded by a housing, a sound jam occurs in the interior of the housing and thus an increase in the noise level. The sound waves striking the housing or flat components from the inside stimulate the vibratable parts to vibrate, which in turn are the cause of the machine noise emitted to the outside.

Zur Verminderung diese Schallstaues ist eine Farbbandkassette bekannt geworden, deren topfförmiges Bodenteil und Deckplatte mit Löchern versehen sind. Durch diese Löcher wird der Schallstau zwar vermindert, und die Geräuschstärke im Innern des Gehäuses herabgesetzt, aber der durch die Führung und den Antrieb des verbrauchten Kohlefarbbandes bedingte Abrieb fällt durch die Löcher in dem Boden des Bodenteiles hindurch und verschmutzt die darunterliegenden Maschinenteile. Eine derartige Verschmutzung wird bei der Farbbandkassette gemäss EP-A-0054182 dadurch vermieden, dass die Schalldämpfungsmittel der Bodenplatte aus Vertiefungen bestehen, deren Boden durch eine Membran verschlossen ist. Ausserdem weist der Boden umlaufende Kragen um die Öffnungen und zusätzliche Auflageflächen für die Wickel der Vorrats-und der Aufwickelspulen auf. Es sind jedoch keine Versteifungsrippen für die Wickel der flanschlosen Spulen vorgesehen.To reduce this noise, a ribbon cassette has become known, the cup-shaped base part and cover plate are provided with holes. Through these holes, the noise build-up is reduced and the noise level inside the housing is reduced, but the abrasion caused by the guidance and the drive of the used carbon ribbon falls through the holes in the bottom of the base part and contaminates the machine parts underneath. Such contamination is avoided in the ribbon cassette according to EP-A-0054182 in that the soundproofing means of the base plate consist of depressions, the base of which is closed by a membrane. In addition, the base has circumferential collars around the openings and additional support surfaces for the winding of the supply and winding spools. However, no stiffening ribs are provided for the winding of the flangeless coils.

Weiterhin ist durch die DE-U 8406300 eine Farbbandkassette bekannt, bei der die Auflage für die Spulenteller der Vorrats- und der Aufwickelspule aus mehreren, voneinander durch Lücken getrennten, kreisbogenförmigen Stegen bestehen. Hierbei sind aber keine Versteifungsrippen vorhanden, die zur Führung der Wickellagen der Auf- und Abwickelspule und zur Führung der verschiebbaren Aufwickelspule dienen.Furthermore, a ribbon cassette is known from DE-U 8406300, in which the support for the spool plates of the supply and take-up spools consist of a plurality of circular webs separated from one another by gaps. Here, however, there are no stiffening ribs which serve to guide the winding layers of the winding and unwinding spool and to guide the displaceable winding spool.

Die oben genannten Versteifungsrippen sind auch nicht in der Farbbandkassette der DE-U 8310441 vorgesehen. Diese Farbbandkassette offenbart lediglich einen Führungsschlitz, der seitlich mit vorstehenden Leisten zur Führung eines Trägers mit zwei Farbbandspulen versehen ist.The above-mentioned stiffening ribs are also not provided in the ribbon cassette of DE-U 8310441. This ribbon cassette only discloses a guide slot which is provided on the side with protruding strips for guiding a carrier with two ribbon spools.

Auch ist durch die US-A 4 350 451 eine Farbbandkassette offenbart worden, bei der ein längsverschiebbares Führungsteil durch eine Federeinrichtung so beaufschlagt wird, dass die Aufwikkelspule sicher gegen ein Antriebsrad gedrückt wird.A ribbon cassette has also been disclosed by US Pat. No. 4,350,451, in which a longitudinally displaceable guide part is acted upon by a spring device such that the winding spool is pressed securely against a drive wheel.

Der Erfindung liegt die Aufgabe zugrunde, eine Farbbandkassette zu schaffen, durch die der Schallstau im Innern des Gehäuses wirkungsvoll herabgesetzt und durch die ein Herausfallen des Abriebes von dem verbrauchten Farbband aus Öffnungen in dem Bodenteil des Kassettengehäuses sicher vermieden wird. Ausserdem soll die Kassette kompakt aufgebaut sein und einen leicht gängigen Antrieb der Vorrats- und der Aufwickelspule ermöglichen, wobei der Abrieb an dem verbrauchten Farbban gering gehalten werden soll. Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.The invention has for its object to provide an ink ribbon cassette, by which the noise accumulation in the interior of the housing is effectively reduced and by which the abrasion of the used ink ribbon from openings in the bottom part of the cassette housing is reliably avoided. In addition, the cassette should be of a compact design and enable the supply and take-up spools to be driven easily, with the abrasion on the used ink ribbon being kept to a minimum. This object is achieved by the characterizing features of patent claim 1.

Die erfindungsgemässe Farbbandkassette bringt eine bemerkenswerte Reduzierung des Geräusches im Innern des Gehäuses, wobei die unterhalb der Farbbandkassette liegenden Maschinenteile in der Aufnahmevorrichtung nicht beschmutzt werden. Das Bodenteil und die Deckplatte sind zur Erhöhung der Formstabilität mit Versteifungsrippen versehen, die gleichzeitig zum Abstützen der Wickel der flanschlosen Auf- und Abwickelspule dienen und/oder ein Herausfallen des in dem Kassettengehäuse anfallenden Abriebes des Farbbandes aus den Öffnungen sicher verhindern. Der Innenaufbau des Farbbandkassettengehäuses wird hierdurch sehr vereinfacht, was sich auf die Fertigung vorteilhaft auswirkt. Durch die exakte Führung der Vorrats- und Aufwickelspule einschliesslich deren Wickel wird ein leichtgängiger Transport des Farbbandes erzielt und ein grösserer Abrieb des Farbbandes verhindert. Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den weiteren Unteransprüchen der folgenden Beschreibung zu entnehmen. Es zeigen

  • Figur 1 eine Draufsicht auf die Farbbandkassette,
  • Figur 2 eine Draufsicht auf die Innenseite des topfförmigen Bodenteils des Kassettengehäuses,
  • Figur 3 eine Draufsicht gemäss Figur 2 mit eingesetzten Bauteilen und
  • Figuren 4 bis 6 Einzelheiten aus der Figur 3.
The ribbon cassette according to the invention brings about a remarkable reduction in the noise inside the housing, the machine parts lying below the ribbon cassette not being soiled in the receiving device. To increase the dimensional stability, the base part and the cover plate are provided with stiffening ribs which at the same time serve to support the winding of the flangeless winding and unwinding spool and / or reliably prevent the ribbon ribbon abrasion from falling out of the openings in the cassette housing. This greatly simplifies the internal structure of the ribbon cassette housing, which has an advantageous effect on production. Due to the exact guidance of the supply and take-up spool including its winding, the ribbon can be transported easily and a greater abrasion of the ribbon is prevented. Further advantageous embodiments of the Er subject of the invention can be found in the further subclaims of the following description. Show it
  • FIG. 1 shows a top view of the ink ribbon cassette,
  • FIG. 2 shows a plan view of the inside of the pot-shaped base part of the cassette housing,
  • Figure 3 is a plan view of Figure 2 with components used and
  • FIGS. 4 to 6 details from FIG. 3.

In Figur 1 ist eine Farbbandkassette 1 auf einer Aufnahmevorrichtung 2 einer Schreib- oder ähnlichen Büromaschine betriebsbereit angeordnet, welche längs eines Aufzeichnungsträgers 3 verschiebbar angeordnet ist. Der Aufzeichnungsträger 3 ist über eine Papierwalze 4 in bekannter Weise transportierbar. Das aus einem Austrittsschlitz 5 der Farbbandkassette 1 austretende Farbband 6 wird von einer Vorratsspule 7 abgewickelt und über einen Spannhebel 8 und über Farbbandführungen 9, 10 zwischen dem Aufzeichnungsträger 3 und einem Typenträger 11 hindurchgeführt. Der Typenträger 11 ist z.B. ein Typenrad mit einer Vielzahl von radialen Schlitzen, wodurch elastische Stege gebildet werden, an deren Enden jeweils eine Type angeordnet ist. Die Einstellung des Typenrades 11 erfolgt über einen nicht dargestellten Schrittmotor, welcher ebenfalls auf der Aufnahmevorrichtung 2 angeordnet ist. Der Abdruck des Schriftzeichens erfolgt über einen auf der Aufnahmevorrichtung 2 verschiebbar gelagerten Druckhammer, welcher z.B. über einen Elektromagneten angetrieben wird.In FIG. 1, an ink ribbon cassette 1 is arranged ready for operation on a receiving device 2 of a typewriter or similar office machine, which is arranged to be displaceable along a record carrier 3. The record carrier 3 can be transported in a known manner via a paper roller 4. The ribbon 6 emerging from an exit slot 5 of the ribbon cassette 1 is unwound from a supply spool 7 and passed between the recording medium 3 and a type carrier 11 via a tensioning lever 8 and ribbon guides 9, 10. The type carrier 11 is e.g. a type wheel with a plurality of radial slots, whereby elastic webs are formed, at the ends of which a type is arranged. The setting of the type wheel 11 takes place via a stepping motor, not shown, which is also arranged on the receiving device 2. The printing of the characters takes place via a printing hammer which is displaceably mounted on the receiving device 2, which e.g. is driven by an electromagnet.

Das Farbband 6 wird über die Führung 10 in einen Eintrittsschlitz 12 des aus einem topfförmigen Bodenteil 13 und einer mit Öffnungen 14 versehenen Deckel 15 bestehenden Kassettengehäuses hineingeführt. Dann wird das Farbband 6, das z.B. aus einem nur einmal benutzbaren Karbonband besteht, über eine tonnenförmige Umlenkrolle 16 zu einer Aufwickelspule 17 geleitet. Diese Aufwickelspule 17 ist mit einer Nabe 18 auf einem Lagerzapfen 19 drehbar gelagert, der mit einer Trägerplatte 20 fest verbunden ist. Diese Trägerplatte 20 ist mit einer Gleitfläche 21 auf dem Boden 22 des Bodenteils 13 verschiebbar gelagert, wobei die Gleitfläche 21 zwei mit Abstand zueinander angeordnete Führungszapfen 23, 24 für einen den Boden 22 durchdringenden Längsschlitz 25 aufweist. Die Vorratsspule 7 ist auf einer auf dem Boden 22 senkrecht angeordneten Lagerachse 26 drehbar gelagert, zu der eine kreisringförmige Versteifungsrippe 27 konzentrisch und ausserhalb dieser Versteifungsrippe 27 weitere Versteifungsrippen 28, 29 und 30 radial ausgerichtet sind. Auf den abgerundeten Versteifungsrippen 28, 29, 30 ist der Wickel 31 und auf der kreisringförmigen Versteifungsrippe 27 der Kern der Vorratsspule 7 drehbar gelagert. Hierdurch wird infolge der geringen Reibung eine leichtgängige Drehung der Vorratsspule 7 erzielt und ein Verschieben der Wickellagen des Wickels 31 zueinander sicher verhindert. Der Deckel 15 weist entsprechend ausgebildete Versteifungsrippen 32, 33, 34 und 35 auf, die ebenfalls zum Abstützen des Wickels 31 dienen. Hierdurch wird ein Verschieben der Wickellagen des Wickels 31 der Vorratsspule 7 z.B. beim Versand der Kassette 1 sicher verhindert. Durch diese exakte Führung der Vorratsspule 7 einschliesslich dessen Wickels 31 wird ein Abrieb des Farbbandes an den Führungsteilen der Kassette 1 erheblich reduziert. Die Vorratsspule 7 weist eine Nabe 36 auf, die von einem als Spannhebel 8 ausgebildeten Formdraht mit zwei freien Schenkeln 37 und 38 umschlungen wird. Der eine Schenkel 37 dieses Formdrahtes ist mit dem freien Ende 39 einer Ausnehmung .40 des Bodenteils 13 des Kassettengehäuses fest verankert, während der andere Schenkel 38 frei beweglich ist und an seinem freien Ende 41 eine drehbar gelagerte Umlenkrolle 42 aufweist. Sobald das Farbband 6 in Pfeilrichtung gemäss Figur 3 gezogen wird, dann entfernt sich der bewegliche Schenkel 38 von dem festen Schenkel 37 des Formdrahtes derart, dass die Haftreibung zwischen dem Formdraht und der Nabe 36 der Vorratsspule 7 aufgehoben wird. Durch dies Freigabe der Vorratsspule 7 ist ein leichtes Abwickeln des Farbbandes 6 von dieser Vorratsspule 7 möglich. Lässt die Zugspannung in dem Farbband 6 wieder nach, dann schwingt der bewegliche Schenkel 38 des Formdrahtes sofort wieder in seine Ausgangsstellung zurück, wodurch die Vorratsspule 7 wieder gebremst wird. Da eine Drehung der Vorratsspule 7 jetzt nicht mehr möglich ist, wird das Farbband 6 stets stramm gehalten.The ink ribbon 6 is guided via the guide 10 into an inlet slot 12 of the cassette housing consisting of a pot-shaped base part 13 and a cover 15 provided with openings 14. Then the ribbon 6, e.g. consists of a carbon tape that can only be used once, is guided via a barrel-shaped deflection roller 16 to a take-up reel 17. This take-up reel 17 is rotatably supported by a hub 18 on a bearing pin 19 which is fixedly connected to a carrier plate 20. This carrier plate 20 is slidably mounted on the bottom 22 of the base part 13 with a sliding surface 21, the sliding surface 21 having two spaced-apart guide pins 23, 24 for a longitudinal slot 25 penetrating the bottom 22. The supply spool 7 is rotatably mounted on a bearing axis 26 arranged vertically on the base 22, to which an annular stiffening rib 27 is concentrically aligned and outside of this stiffening rib 27 further stiffening ribs 28, 29 and 30 are radially aligned. The winding 31 is rotatably mounted on the rounded stiffening ribs 28, 29, 30 and the core of the supply reel 7 is rotatably mounted on the annular stiffening rib 27. As a result, due to the low friction, smooth rotation of the supply reel 7 is achieved and displacement of the winding layers of the winding 31 relative to one another is reliably prevented. The cover 15 has appropriately designed stiffening ribs 32, 33, 34 and 35, which also serve to support the winding 31. This will shift the winding positions of the winding 31 of the supply reel 7 e.g. safely prevented when shipping the cassette 1. This exact guidance of the supply reel 7, including its winding 31, considerably reduces abrasion of the ink ribbon on the guide parts of the cassette 1. The supply spool 7 has a hub 36, which is wrapped by a shaped wire designed as a clamping lever 8 with two free legs 37 and 38. One leg 37 of this shaped wire is firmly anchored to the free end 39 of a recess .40 of the bottom part 13 of the cassette housing, while the other leg 38 is freely movable and has a rotatably mounted deflection roller 42 at its free end 41. As soon as the ink ribbon 6 is pulled in the direction of the arrow according to FIG. 3, the movable leg 38 moves away from the fixed leg 37 of the shaped wire in such a way that the static friction between the shaped wire and the hub 36 of the supply reel 7 is eliminated. This release of the supply spool 7 enables the ink ribbon 6 to be easily unwound from this supply spool 7. If the tension in the ink ribbon 6 subsides again, the movable leg 38 of the shaped wire swings back immediately into its starting position, as a result of which the supply reel 7 is braked again. Since rotation of the supply spool 7 is no longer possible, the ink ribbon 6 is always kept taut.

Um ein Herausfallen von Farbbandabrieb aus dem Längsschlitz 25 des Bodenteils 13 des Kassettengehäuses zu verhindern, ist dieser von erhöhten Versteifungsrippen 44, 45 und 46 umgeben. Gemäss Figur 2 ist hierbei je eine Versteifungsrippe 44 und 45 parallel zu der Verschieberichtung der rechteckförmig ausgebildeten Trägerplatte 20 auf jeder Seite des Längsschlitzes 25 angeordnet. Die Enden 47, 48 49, 50 dieser Versteifungsrippen 44 und 45 sind einerseits mit der kreisringförmigen Versteifungsrippe 27 und andererseits mit einer senkrecht zu der Bewegungsrichtung der Trägerplatte 20 angeordneten Versteifungsrippe 46 fest verbunden. Die beiderseits der Längsseiten 51, 52 der Trägerplatte 20 auf dem Boden 22 angeordneten Versteifungsrippen 44, 45 weisen gegeneinander gerichtete Schenkel 53, 54 auf, die ein Verkippen der verschiebbaren Trägerplatte 20 mit der Aufwickelspule 17 sicher verhindern, siehe Figur 4. Der Schenkel 53 weist übrigens gleichzeitig eine Auflagefläche 55 für den Wickel 31 der Vorratsspule 7 auf. Hierdurch weist das Bodenteil 13 zusammen mit den Versteifungsrippen 28, 29, 30 vier um 90° versetzt angeordnete Auflageflächen für den Wickel 31 auf, wodurch eine Verschiebung der einzelnen Lagen der Wickel 31 sicher vermieden wird.In order to prevent ribbon abrasion from falling out of the longitudinal slot 25 of the base part 13 of the cassette housing, the latter is surrounded by raised stiffening ribs 44, 45 and 46. According to FIG. 2, a stiffening rib 44 and 45 is arranged parallel to the direction of displacement of the rectangular support plate 20 on each side of the longitudinal slot 25. The ends 47, 48, 49, 50 of these stiffening ribs 44 and 45 are fixedly connected on the one hand to the annular stiffening rib 27 and on the other hand to a stiffening rib 46 arranged perpendicular to the direction of movement of the carrier plate 20. The stiffening ribs 44, 45 arranged on the floor 22 on both sides of the longitudinal sides 51, 52 of the carrier plate 20 have mutually directed legs 53, 54 which reliably prevent the displaceable carrier plate 20 from tilting with the take-up reel 17, see FIG. 4. The leg 53 has incidentally, at the same time, a support surface 55 for the winding 31 of the supply reel 7. As a result, the base part 13, together with the stiffening ribs 28, 29, 30, has four support surfaces for the winding 31 which are offset by 90 °, thereby reliably preventing the individual layers of the winding 31 from shifting.

Der Boden 22 in dem Bodenteil 13 des Kassettengehäuses weist übrigens Sacklöcher 56 zur Schalldämpfung, zwei Öffnungen 57 und 58 zum Einrasten von Verriegelungselementen in der Aufnahmevorrichtung in der Maschine und eine weitere Öffnung 59 für Abfühlelemente zum Abtasten des Farbbandes auf. Der Wickel 61 der Aufwickelspule 17 ist in dem Bodenteil auf der Versteifungsrippe 46 und auf einer von dem anderen Ende der Trägerplatte 20 ausgehenden und in Richtung zu dem Lagerzapfen 19 verlaufenden Lagerrippe 60 derart lagerbar, dass sich die einzelnen Lagen des Farbbandes 6 beim Aufwickeln nicht gegeneinander verschieben. Der Lagerzapfen 19 für die Aufwickelspule 17 ist mit einer Verlängerung 62 in einem in Verschieberichtung der Trägerplatte 20 angeordneten, durchgehenden Längsschlitz 63 des Deckels 15 bewegbar angeordnet, wodurch der Farbbandvorrat angezeigt wird. Der Längsschlitz 63 in dem Deckel 15 weist auf der Innenseite einen umlaufenden Kragen 64 auf, der gleichzeitig zum Abstützen des Wickels 61 der Aufwickelspule 17 dient.The bottom 22 in the bottom part 13 of the cassette housing has blind holes 56 for soundproofing, two openings 57 and 58 for latching locking elements in the receiving device in the machine and a further opening 59 for sensing elements for scanning on the ribbon. The winding 61 of the take-up reel 17 can be supported in the bottom part on the stiffening rib 46 and on a bearing rib 60 extending from the other end of the carrier plate 20 and running in the direction of the bearing journal 19 such that the individual layers of the ink ribbon 6 do not oppose one another during winding move. The bearing pin 19 for the take-up spool 17 is movably arranged with an extension 62 in a continuous longitudinal slot 63 of the cover 15 arranged in the direction of displacement of the carrier plate 20, as a result of which the ribbon supply is indicated. The longitudinal slot 63 in the cover 15 has a circumferential collar 64 on the inside, which at the same time serves to support the winding 61 of the take-up reel 17.

Die Transportwalze 65 weist ein mit dem Wikkel 61 der Aufwickelspule 17 in Eingriff stehendes Stachelrad 66 auf, und ist an einem Ende 67 mit einem Hohlzapfen 68 auf einem eine Öffnung 69 in dem Boden 22 umgebenden Kragen 70 und an dem anderen Ende 71 mit in einem Handrad 72 zentrisch angeordneten Lagerbohrung 73 für einen Zentrierzapfen 74 an der Innenseite 75 des Deckels 15 drehbar gelagert. Die Stirnfläche 76 des Handrades 72 an der Transportwalze 65 ist mit Riffelungen 77 versehen, wobei ein Teil dieser Stirnfläche 76 aus einer kreisabschnittförmigen Öffnung 78 des Deckels 15 herausragbar angeordnet ist. Hierdurch ist es möglich, die Transportwalze 65 über das Handrad 72 zu drehen, wodurch ein Aufwickeln des Farbbandes 6 auf die Aufwickelspule 17 ermöglicht wird. Die Öffnung 78 in dem Deckel 15 befindet sich in einer kreisabschnittförmigen Vertiefung 79 an dem Deckelrand 80 derart, dass die Stirnfläche 76 des Handrades 72 nicht gegenüber der übrigen Oberfläche des Deckels 15 hervorsteht Die Versteifungsrippe 46 auf dem Boden 22 des Bodenteils 13 ist so ausgebildet und derart angeordnet, dass der beim Aufwickeln durch das Stachelrad 66 anfallende Abrieb des Farbbandes 6 nicht aus den Öffnungen 58, 59 und 25 herausfallen kann. Die Öffnung 69 ist durch den Kragen 70 gegen den Abrieb abgeschirmt. Durch diese Massnahmen wird eine Verschmutzung der Maschinenteile beim Einsatz der Kassette 1 in der Aufnahmevorrichtung der Maschine sicher verhindert.The transport roller 65 has a spike wheel 66 which engages with the winding 61 of the take-up reel 17, and is at one end 67 with a hollow pin 68 on a collar 70 surrounding an opening 69 in the bottom 22 and at the other end 71 with in one Handwheel 72 rotatably arranged centrally arranged bearing bore 73 for a centering pin 74 on the inside 75 of the cover 15. The end face 76 of the handwheel 72 on the transport roller 65 is provided with corrugations 77, a part of this end face 76 being arranged so as to protrude from a circular opening 78 in the cover 15. This makes it possible to rotate the transport roller 65 via the handwheel 72, which enables the ink ribbon 6 to be wound onto the take-up spool 17. The opening 78 in the lid 15 is located in a circular recess 79 on the lid edge 80 such that the end face 76 of the handwheel 72 does not protrude from the rest of the surface of the lid 15. The stiffening rib 46 on the bottom 22 of the bottom part 13 is designed in such a way and arranged in such a way that the abrasion of the ink ribbon 6 that occurs when the sprocket 66 winds up cannot fall out of the openings 58, 59 and 25. The opening 69 is shielded from abrasion by the collar 70. These measures reliably prevent contamination of the machine parts when the cassette 1 is used in the receiving device of the machine.

Die Verriegelungsöffnung 57 in dem Boden 22 des Bodenteiles 13 ist durch eine Versteifungsrippe 81 abgeschirmt, welche einerseits mit der Versteifungsrippe 30 fest verbunden ist und andererseits eine konzentrisch zu der Vorratsspule angeordnete Verlängerungsrippe 82 aufweist. Auf dieser Verlängerungsrippe 82 ist der federnde Schenkel 38 verschiebbar gelagert, wodurch dieser Schenkel 38 infolge der geringen Reibung leicht beweglich ist.The locking opening 57 in the bottom 22 of the bottom part 13 is shielded by a stiffening rib 81 which, on the one hand, is firmly connected to the stiffening rib 30 and, on the other hand, has an extension rib 82 arranged concentrically with the supply spool. The resilient leg 38 is slidably mounted on this extension rib 82, as a result of which this leg 38 is easily movable due to the low friction.

Die Trägerplatte 20 wird durch eine Federeinrichtung derart beaufschlagt dass der Wickel 61 der Aufwickelspule 17 stets mit dem Stachelrad 66 der Transportwalze 65 in Eingriff gehalten wird. Diese Federeinrichtung besteht aus einer Schenkelfeder 83, die auf einem Zapfen 84 gelagert ist und einem fest angeordneten ersten Schenkel 85 und einem federnden zweiten Schenkel 86 aufweist. Der zweite Schenkel 86 liegt an einem Ansatz 87 am Lagerzapfen 19 für die Aufwickelspule 17 federnd an, siehe Figuren 3 und 5.The carrier plate 20 is acted upon by a spring device such that the winding 61 of the take-up spool 17 is always held in engagement with the sprocket wheel 66 of the transport roller 65. This spring device consists of a leg spring 83 which is mounted on a pin 84 and has a fixedly arranged first leg 85 and a resilient second leg 86. The second leg 86 rests on a shoulder 87 on the bearing pin 19 for the take-up spool 17, see FIGS. 3 and 5.

Claims (10)

1. Ribbon cassette (1) for a typewriter or similar office machine with openings arranged in the bottom (22) of the cassette case e.g. as openings (25, 57, 58, 59) for the passage of sensing elements for the sensing of the ribbon etc., the ribbon (6) being windable from a take-off reel (7) and rewindable onto a take-up reel (17) by means of a drivable transport roll (65) and the transport roll (65) being a sprocket wheel (66) against which the take-up reel (17) slidable on the bottom (22) is pressable with the outer winding by means of a spring device, characterised in that the cup-shaped bottom part (13) of the cassette case comprises projecting stiffening ribs (44, 45, 46) on the inside of the bottom (22), which simultaneously serve as support for the windings (61, 31 ) of the flangeless take-up reel (17) and take-off reel (7), prevent the scuff from the ribbon (6) collecting in the cassette case from dropping through the openings (25, 57, 58, 59) and act as guides for the sliding of the take-up reel (17).
2. Cassette according to claim 1, characterised in that the bottom (22) comprises an upright bearing axle (26) for the take-off reel (7), with which stiffening ribs (28, 29, 30) for supporting and guiding the winding of the take-off reel (7) are aligned radially.
3. Cassette according to claim 2, characterised in that the stiffening ribs (28, 29, 30) are supported outside an annular-shaped stiffening rib (27) arranged concentrically to the bearing axle (26).
4. Cassette according to claim 1, 2 or 3, the take-up reel (17 being rotatable on a bearer plate (20) slidable in a longitudinal slot (25) in the bottom and being pressable against the transport roll by a spring device acting on the bearer plate (20), characterised in that the stiffening ribs (44, 45, 46) are arranged around the longitudinal slot (25).
5. Cassette according to claim 4, characterised in that one stiffening rib (44, 45) respectively is arranged parallel to the sliding direction of the rectangular-shaped bearer plate (20) on each side of the longitudinal slot (25), and that the ends (47, 48, 49, 50) of the two stiffening ribs (44, 45) are firmly connected on the one side to the annular-shaped stiffening rib (27) and on the other side to the stiffening rib (46) arranged perpendicular to the moving direction of the bearer plate (20).
6. Cassette according to claim 5, characterised in that the bearer plate (20) comprises on its sliding surface (21 ) two mutually spaced guide pilots (23, 24) which are slidable in the longitudinal slot (25), and that the stiffening ribs (44, 45) arranged on the bottom (22) on either side of the longitudinal sides (51, 52) of the bearer plate (20) comprise mutually facing legs (53, 54) which prevent tilting of the slidable bearer plate (20) with the take-up reel (17), and that at least one leg (53) serves simultaneously as bearing surface for the winding (31 ) of the take-off reel (7).
7. Cassette according to any one of the foregoing claims, characterised in that the bearer plate (20) comprises at one end a journal pin (19) for the take-up reel (17) and a bearing rib (60) starting from the other end which is directed towards the journal pin (19) and acts as bearing surface for the winding (61 ) of the take-up reel (17).
8. Cassette according to claim 7, characterised in that the journal pin (19) for the take-up reel (17) is movable with an extension (62) in a longitudinal slot (63) in the lid (15).
9. Cassette according to one of the foregoing claims, characterised in that the transport roll (65) is rotatable at one end (67) with a hollow journal (68) on a collar (70) surrounding an opening (69) in the bottom (22) and at the other end (71 ) with a bearing bore (73) which is arranged centrally in a handwheel (72) and is for a centering pin (74) on the inside (75) of the lid (15).
10. Cassette according to claim 9, characterised in that the front face (76) of the handwheel (72) on the transport roll (65) is provided with flutings (77), that part of the front face (76) is able to protrude from a segment-shaped opening (78) in the lid (15), and that the opening (78) is arranged in a segment-shaped depression (79) at the lid edge (80).
EP85109240A 1984-10-25 1985-07-23 Ink ribbon cartridge for type writers or similar business machines Expired EP0179202B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843439089 DE3439089A1 (en) 1984-10-25 1984-10-25 RIBBON CASSETTE FOR A WRITING OR SIMILAR OFFICE MACHINE
DE3439089 1984-10-25

Publications (2)

Publication Number Publication Date
EP0179202A1 EP0179202A1 (en) 1986-04-30
EP0179202B1 true EP0179202B1 (en) 1989-05-03

Family

ID=6248747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109240A Expired EP0179202B1 (en) 1984-10-25 1985-07-23 Ink ribbon cartridge for type writers or similar business machines

Country Status (4)

Country Link
US (1) US4725155A (en)
EP (1) EP0179202B1 (en)
JP (1) JPS61179776A (en)
DE (2) DE3439089A1 (en)

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Publication number Priority date Publication date Assignee Title
DE3625089A1 (en) * 1985-08-07 1987-02-19 Olympia Ag Ink-ribbon cartridge for typewriters or office machines of similar design
US5026181A (en) * 1988-10-26 1991-06-25 Samsung Electronics Co., Ltd. Ribbon cartridge for an electronic typewriter
USD458295S1 (en) 2000-07-27 2002-06-04 Iimak Printer cassette
USD453179S1 (en) 2000-07-27 2002-01-29 Iimak Printer cassette
PT2370264E (en) 2008-12-25 2014-09-16 Brother Ind Ltd Tape cassette and tape printer
US8562228B2 (en) 2008-12-25 2013-10-22 Brother Kogyo Kabushiki Kaisha Tape printer
EP3106314B1 (en) 2009-03-31 2022-04-27 Brother Kogyo Kabushiki Kaisha Tape cassette and tape printer
CN108312723B (en) 2009-03-31 2020-12-08 兄弟工业株式会社 Tape box
KR101774190B1 (en) * 2009-03-31 2017-09-12 브라더 고오교오 가부시키가이샤 Tape cassette and tape printer
JP5136503B2 (en) 2009-03-31 2013-02-06 ブラザー工業株式会社 Tape cassette
JP4947085B2 (en) * 2009-03-31 2012-06-06 ブラザー工業株式会社 Tape cassette
CN201989425U (en) * 2009-03-31 2011-09-28 兄弟工业株式会社 Band box and band printer
CN104442030B (en) 2009-03-31 2017-04-12 兄弟工业株式会社 Tape cassette
US20100329767A1 (en) * 2009-06-30 2010-12-30 Brother Kogyo Kabushiki Kaisha Tape cassette
US8641304B2 (en) 2009-06-30 2014-02-04 Brother Kogyo Kabushiki Kaisha Tape cassette
JP5326950B2 (en) * 2009-09-09 2013-10-30 ブラザー工業株式会社 Tape cassette
JP5212550B2 (en) 2009-12-16 2013-06-19 ブラザー工業株式会社 Tape cassette
JP5464216B2 (en) 2009-12-28 2014-04-09 ブラザー工業株式会社 Tape cassette
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Also Published As

Publication number Publication date
JPS61179776A (en) 1986-08-12
EP0179202A1 (en) 1986-04-30
DE3569907D1 (en) 1989-06-08
DE3439089A1 (en) 1986-05-07
US4725155A (en) 1988-02-16

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