EP0214379B1 - Replacement assembly for a refillable cartridge of a typewriter or the like - Google Patents

Replacement assembly for a refillable cartridge of a typewriter or the like Download PDF

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Publication number
EP0214379B1
EP0214379B1 EP86108158A EP86108158A EP0214379B1 EP 0214379 B1 EP0214379 B1 EP 0214379B1 EP 86108158 A EP86108158 A EP 86108158A EP 86108158 A EP86108158 A EP 86108158A EP 0214379 B1 EP0214379 B1 EP 0214379B1
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EP
European Patent Office
Prior art keywords
spool
ribbon
cassette
takeup spool
guide pin
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 - Lifetime
Application number
EP86108158A
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German (de)
French (fr)
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EP0214379A1 (en
Inventor
Rolf Behrens
Hermann Jendricke
Manfred Sauer
Klaus-Dieter Frerichs
Alfred Keiter
Andreas Wesselhöft
Hans-Peter Heins
Heinz Lange
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AEG Olympia Office GmbH
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AEG Olympia AG
AEG Olympia Office GmbH
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Publication date
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Publication of EP0214379A1 publication Critical patent/EP0214379A1/en
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Publication of EP0214379B1 publication Critical patent/EP0214379B1/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

  • the invention relates to an exchange device for a reloadable cassette, consisting of a ribbon wound as a supply spool and a spool core for the take-up spool, a typewriter or office machine of the type specified in the preamble of claim 1.
  • a removable cassette for a carbon ribbon in a printer with a rotatable drive element for feeding the ribbon has become known, the cassette consisting of a housing accommodating a supply spool and a take-up spool for the ribbon.
  • a swiveling feed roller interacts with a spiked wheel with a take-up spool arranged on a fixed axis in order to wind up the carbon strip.
  • the feed roller with the spike wheel must first be disengaged from the take-up spool. In this changing process, several manual operations are required, since the feed roller must also be brought back into engagement with the take-up reel after inserting a new cassette into the take-up device of the machine.
  • DE-PS-2 553 329 shows an ink ribbon cassette for a typewriter or office machine of a similar type, in which the feed roller with the sprocket wheel is arranged in the cassette.
  • the feed roller remains in constant engagement with the carbon tape of the take-up spool. This makes it possible to replace ribbon cartridges with only one hand.
  • This known ribbon cassette is very expensive, since the drive elements contained in the ribbon cassette for the carbon ribbon are also thrown away after their consumption. Since the feed roller is also always in engagement with the take-up spool and the drive elements are mounted on the one hand in the base part and on the other hand in the cover firmly connected to the base part, it is not possible to replace the feed and take-up spools.
  • US-A-4 367 963 also discloses a reloadable ink ribbon cassette with an opening closable cover. Since the core of the take-up spool is directly attached to the free end of the supply spool, threading the ink ribbon around deflection points within the cassette is thereby ruled out.
  • the invention has for its object to provide an exchange device for a reloadable cassette, consisting of a ribbon wound as a supply spool and a spool core for the take-up spool, which after inserting the supply spool and the core of the take-up spool into the opened ribbon cassette, easy threading of the ribbon allow for several deflection points in the cassette and a simple attachment of the ribbon end to the take-up spool without the operator having to have any particular skill or knowledge.
  • This object is achieved by the invention characterized in claim 1.
  • the guide pin After removing the used ribbon spools and inserting a new supply spool and the core of the take-up spool, the guide pin makes it easy and quick to thread the ribbon around deflection points in the cassette and securely connect the ribbon end to the core of the take-up spool.
  • the replacement of the ribbon spools is possible in a short time without special knowledge.
  • FIG. 1 shows a reloadable ink ribbon cassette 1, which consists of a pot-shaped base part 2 and a cover 3 which can be closed at the opening.
  • the cover 3 can in this case be connected to the rear wall 4 of the base part 2 in an articulated manner and can be locked to the front wall 5 by means of locking lugs (not shown).
  • a feed spool 7 is rotatably supported, of which an ink ribbon, for. B.
  • a one-time use carbon tape 8 can be unwound.
  • the carbon strip 8 can be steered via deflection bolts 9, 10, 11 to an outlet opening 13 with a deflection 12 and arrives via an deflection 14 again in an entry opening 15 of the cassette 1.
  • the carbon strip 8 is wound up via a deflection bolt 16 to a take-up spool 17 of carbon tape 8 passed.
  • the take-up spool 17 is rotatably supported with its core 18 on a bearing pin 19 of a holder 20.
  • the bearing bore 37 is designed as a blind hole, see FIG 17 always against a spike 23 on the floor 6 gela gerten feed roller 24 can be pressed.
  • the carbon belt 8 is securely wound onto the take-up spool 17 when the feed roller 24 rotates.
  • the free end 25 of the ribbon 8 of the full supply spool 7 has a fastening for a guide element for threading the ribbon 8 around deflection points 9, 10, 11, 12, 14, 16 in the cassette 1, which with the core 18 of the take-up spool 17 Winding the ribbon 8 is firmly connected.
  • the attachment is arranged at the free end 25 of a ribbon piece 49 which wraps around the ribbon roll 26 in an overlapping manner.
  • the attachment can e.g. B. be an eyelet 27 into which a guide pin 28 can be inserted.
  • the guide pin 28 can also be firmly connected to the band piece 49 by means of an adhesive connection.
  • the free end 25 of the band piece 49 can have an adhesive surface with which the guide pin 28 is firmly connected.
  • the free end 25 of the ribbon piece 49 holds the ink wrap 26 together with a fixed loop, such that the ink ribbon wrap 26 cannot be unwound.
  • the contact surfaces of the loop of the band piece 49 can be firmly glued to one another.
  • the core 18 of the take-up spool 17 has a fastening device for fastening to the free end 25 of the ink ribbon 8 on the feed spool 7.
  • the fastening device is a receiving bore 29 in the core 18 of the take-up spool 17, into which the guide pin 28 can be inserted.
  • the receiving bore 29 is also provided with a passage slot 30 to a recess 31 serving as a threading slot in the outer circumference of the core 18 of the take-up spool 17.
  • the guide pin 28 has, on the one hand, a guide tab 32 for guides 33, 34 of the base 6 in the base part 2, which protrudes from the width of the ink ribbon 8, and on the other hand a handle 35 for facilitating the threading of the ink ribbon 8.
  • the handle 35 is connected to the guide pin 28 via a material weakening 36, which favors the detachment of the handle 35 after the guide pin 28 has been inserted into the receiving bore 29.
  • the guides 33, 34 are arranged in the region of the deflections 9, 10, 11, 14, 16 in the base part 2 and have wall-shaped elevations.
  • the coil core 38 of the supply reel 7 is provided with a protruding handle 39 on the upper side.
  • the coil core 38 of the feed coil 7 has a recess 40 on its underside for receiving the handle 39. This makes it possible to stack several feed coils 7 on top of one another for safe storage.
  • a package 47 for the shipping and storage of the ribbon reels, a package 47 according to FIG. 3 is provided, which consists of a pot-shaped base part 41 and a cover 42 that can be closed.
  • the lid 42 and the bottom part 41 each have an opening 43, 44 for the passage of the handle 39, through which a stacking of the packages 47 is also ensured.
  • the packaging 47 is cuboid.
  • the core 18 of the take-up spool 17 is stored in the package 47 in one of the free corners between the pot-shaped base part 41 and the outer winding 45 of the feed spool 17.
  • the guide pin 28 connected to the free end 25 of the feed spool 7 can be connected to a wall 46 of the base part 41 e.g. B. be releasably connected by an adhesive connection.
  • the supply spool 7 is firmly connected to a toothed disk 48, in the toothing of which a locking tooth 52 of a spring-loaded 53 swivel lever 50 can be locked.
  • the deflection pin 10 is incidentally mounted on the pivot lever 50. If the carbon belt 8 is moved in the direction of arrow 65 according to FIG. 1, then the pivoting lever 50 is pivoted clockwise around the bearing pin 51 in such a way that the ratchet tooth 52 disengages from the toothed disk 48. As a result, the supply reel 7 is released for unwinding the carbon ribbon 8. When the tension in the carbon band 8 decreases, the locking tooth 52 comes into engagement with the toothed disk 48 again due to the force of the spring 53.
  • the toothed disc 48 can also be formed in one piece with the core 38 of the feed coil 7. As a result, the assembly of the feed spool 7 in the cassette 1 is made very easy. In addition, the toothed pulley 48 supports the full winding of the feed spool 7 in such a way that the winding cannot bulge out.
  • the holder 20 with the rotatably mounted take-up spool 17 needs to be brought out of engagement with the pin wheel 23 of the feed roller 24.
  • the disengagement of the holder 20 with the take-up spool 17 can take place via a pivot lever 54 which is pivotably mounted in a recess 55 in a side wall 56 of the base part 2 of the cassette 1. With the help of this pivoting lever, the holder 20 with the take-up spool 17 can be pressed into a detent position for decoupling the spiked wheel 23 with the outer winding 45 of the take-up spool 17.
  • This pivot lever 54 has a handle 58 on an arm 57 and a stop 60 on a second stop arm 59, which can be brought into engagement with the holder 20.
  • the stop arm 59 is provided with a resilient latching lug 61, which can be latched behind the latched edge 62 on the spring-loaded holder 20 in the latched position.
  • the holder 20 is unlocked again via the pivoting lever 54 in such a way that the sprocket 23 securely engages with the outer winding of the take-up spool 17 again.
  • this (55) Around the pivot lever 54 in the non-operative position to stick in the recess 55, this (55) has a notch 63, in which the pivot lever 54 can be locked with a locking edge 64.
  • the ribbon spools 7, 17 according to the invention enable simple replacement, the replacement parts no longer required requiring only a small amount of material.

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  • Impression-Transfer Materials And Handling Thereof (AREA)

Description

Die Erfindung betrifft eine Austauscheinrichtung für eine nachladbare Kassette, bestehend aus einem als Zuführspule aufgewickelten Farbband und einem Spulenkern für die Aufnahmespule, einer Schreib- oder Büromaschine der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to an exchange device for a reloadable cassette, consisting of a ribbon wound as a supply spool and a spool core for the take-up spool, a typewriter or office machine of the type specified in the preamble of claim 1.

Aus der US-PS-3 731 781 ist eine abnehmbare Kassette für ein Karbonband bei einem Drucker mit einem drehbaren Antriebselement für den Vorschub des Bandes bekannt geworden, wobei die Kassette aus einem eine Zuführspule und eine Aufnahmespule für das Band aufnehmenden Gehäuse besteht. Dabei wirkt eine verschwenkbare Zuführwalze mit einem Stachelrad mit einer auf einer festen Achse angeordneten Aufnahmespule zusammen, um das Karbonband aufzuwickeln. Beim Wechseln einer Kassette muß zunächst die Zuführwalze mit dem Stachelrad in Außereingriff mit der Aufnahmespule gebracht werden. Bei diesem Wechselvorgang sind mehrere Handbetätigungen erforderlich, da die Zuführwalze nach dem Einsetzen einer neuen Kassette in die Aufnahmevorrichtung der Maschine auch wieder in Eingriff mit der Aufnahmespule gebracht werden muß.From US Pat. No. 3,731,781, a removable cassette for a carbon ribbon in a printer with a rotatable drive element for feeding the ribbon has become known, the cassette consisting of a housing accommodating a supply spool and a take-up spool for the ribbon. A swiveling feed roller interacts with a spiked wheel with a take-up spool arranged on a fixed axis in order to wind up the carbon strip. When changing a cassette, the feed roller with the spike wheel must first be disengaged from the take-up spool. In this changing process, several manual operations are required, since the feed roller must also be brought back into engagement with the take-up reel after inserting a new cassette into the take-up device of the machine.

Die DE-PS-2 553 329 zeigt eine Farbbandkassette für eine Schreib- order Büromaschine ähnlicher Bauart, in der die Zuführwalze mit dem Stachelrad mit in der Kassette angeordnet ist. Die Zuführwalze bleibt hierbei ständig in Eingriff mit dem Karbonband der Aufnahmespule. Hierdurch ist es möglich, den Austausch von Farbbandkassetten nur mit einer Hand durchzuführen. Diese bekannte Farbbandkassette ist sehr kostspielig, da die in der Farbbandkassette enthaltenen Antriebsglieder für das Karbonband nach deren Verbrauch mit weggeworfen werden. Da die Zuführwalze außerdem immer mit der Aufnahmespule in Eingriff steht und die Antriebselemente einerseits im Bodenteil und andererseits in dem mit dem Bodenteil fest verbundenen Deckel gelagert sind, ist ein Austauschen der Zuführ- und der Aufnahmespule nicht möglich.DE-PS-2 553 329 shows an ink ribbon cassette for a typewriter or office machine of a similar type, in which the feed roller with the sprocket wheel is arranged in the cassette. The feed roller remains in constant engagement with the carbon tape of the take-up spool. This makes it possible to replace ribbon cartridges with only one hand. This known ribbon cassette is very expensive, since the drive elements contained in the ribbon cassette for the carbon ribbon are also thrown away after their consumption. Since the feed roller is also always in engagement with the take-up spool and the drive elements are mounted on the one hand in the base part and on the other hand in the cover firmly connected to the base part, it is not possible to replace the feed and take-up spools.

Weiterhin ist zum Auswechseln von Farbbändern in Schreibmaschinen durch die DE-B-1 153 385 bekannt, das freie Ende des Farbbandes der vollen Zuführspule mit einer Klammer zum Einlegen und Befestigen des Farbbandes an der Aufnahmespule zu versehen. Eine derartige Klammer ist aber nicht zum Einfädeln eines Farbbandes innerhalb einer Kassette geeignet, da dort nur wenig Platz zur Verfügung steht und ein falsches Einfädeln sofort zu Störungen des Farbbandtransports führt.Furthermore, for the replacement of ink ribbons in typewriters, it is known from DE-B-1 153 385 to provide the free end of the ink ribbon of the full supply reel with a clip for inserting and attaching the ink ribbon to the take-up reel. However, such a clip is not suitable for threading an ink ribbon into a cassette, since there is little space available there and incorrect threading immediately leads to disturbances in the ink ribbon transport.

Auch offenbart die US-A-4 367 963 eine nachladbare Farbbandkassette mit einem eine Öffnung verschließbaren Deckel. Da der Kern der Aufnahmespule mit dem freien Ende der Vorratssspule unmittelbar befestigt ist, scheidet hierdurch ein Einfädeln des Farbbandes um Umlenkpunkte innerhalb der Kassette aus.US-A-4 367 963 also discloses a reloadable ink ribbon cassette with an opening closable cover. Since the core of the take-up spool is directly attached to the free end of the supply spool, threading the ink ribbon around deflection points within the cassette is thereby ruled out.

Der Erfindung liegt die Aufgabe zugrunde, eine Austauscheinrichtung für eine nachladbare Kassette, bestehend aus einem als Zuführspule aufgewickelten Farbband und einem Spulenkern für die Aufnahmespule, zu schaffen, die nach Einsetzen der Vorratsspule und des Kerns der Aufnahmespule in die geöffnete Farbbandkassette ein leichtes Einfädeln des Farbbandes um mehrere Umlenkpunkte in der Kassette und ein einfaches Befestigen des Farbbandendes an der Aufnahmespule ermöglichen, ohne daß von der Bedienungsperson eine besondere Geschicklichkeit oder irgendwelche Kenntnisse erforderlich wären. Diese Aufgabe wird durch die im Patentanspruch 1 gekennzeichnete Erfindung gelöst. Nach dem Entfernen der verbrauchten Farbbandspulen und dem Einsetzen einer neuen Vorratsspule und des Kerns der Aufnahmespule ist mittels des Führungsstiftes ein leichtes und schnelles Einfädeln des Farbbandes um Umlenkpunkte in der Kassette und ein sicheres Verbinden des Farbbandendes mit dem Kern der Aufnahmespule möglich. Der Austausch der Farbbandspulen ist ohne besondere Kenntnisse in kurzer Zeit möglich.The invention has for its object to provide an exchange device for a reloadable cassette, consisting of a ribbon wound as a supply spool and a spool core for the take-up spool, which after inserting the supply spool and the core of the take-up spool into the opened ribbon cassette, easy threading of the ribbon allow for several deflection points in the cassette and a simple attachment of the ribbon end to the take-up spool without the operator having to have any particular skill or knowledge. This object is achieved by the invention characterized in claim 1. After removing the used ribbon spools and inserting a new supply spool and the core of the take-up spool, the guide pin makes it easy and quick to thread the ribbon around deflection points in the cassette and securely connect the ribbon end to the core of the take-up spool. The replacement of the ribbon spools is possible in a short time without special knowledge.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den weiteren Unteransprüchen zu entnehmen. Die Einzelheiten der Erfindung sind nachstehend anhand der in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert. Es zeigt:

  • Figur 1 nachladbare Kassette mit geöffnetem Deckel,
  • Figur 2 eine Einzelheit aus Figur 1,
  • Figur 3 eine schaubildliche Darstellung der Verpackung, und
  • Figur 4 mehrere übereinander gestapelte Verpackungen.
Further advantageous refinements of the subject matter of the invention can be found in the further subclaims. The details of the invention are explained below with reference to the embodiments shown in the drawings. It shows:
  • FIG. 1 reloadable cassette with the lid open,
  • FIG. 2 shows a detail from FIG. 1,
  • Figure 3 is a diagrammatic representation of the packaging, and
  • Figure 4 several packages stacked one on top of the other.

Die Figur 1 zeigt eine nachladbare Farbbandkassette 1 , die aus einem topfförmigen Bodenteil 2 und einem dessen Öffnung verschließbaren Deckel 3 besteht. Der Deckel 3 kann hierbei mit der Rückwand 4 des Bodenteils 2 gelenkig verbunden sein und ist mittels nicht dargestellter Rastnasen mit der Vorderwand 5 verrastbar. Auf dem Boden 6 des Bodenteils 2 ist eine Zuführspule 7 drehbar lagerbar, von der ein Farbband, z. B. ein einmalig verwendbares Karbonband 8 abwickelbar ist. Das Karbonband 8 ist über Umlenkbolzen 9, 10, 11 zu einer Austrittsöffnung 13 mit einer Umlenkung 12 lenkbar und gelangt über eine Umlenkung 14 wieder in eine Eintrittsöffnung 15 der Kassette 1. Danach wird das Karbonband 8 über einen Umlenkbolzen 16 zu einer Aufnahmespule 17 zum Aufwickeln des Karbonbandes 8 geleitet. Die Aufnahmespule 17 ist mit ihrem Kern 18 auf einem Lagerzapfen 19 eines Halters 20 drehbar gelagert. Um ein seitenrichtiges Aufsetzen der Aufnahmespule 17 zum Lagerzapfen 19 stets zu gewährleisten, ist die Lagerbohrung 37 als Sackloch ausgebildet, siehe Figur 2. An dem um einen Stift 21 verschwenkbaren Halter 20 ist eine Feder 22 angelenkt, derart, daß das Karbonband 8 auf der Aufnahmespule 17 stets gegen ein Stachelrad 23 einer auf dem Boden 6 gelagerten Zuführwalze 24 drückbar ist. Hierdurch wird bei Drehung der Zuführwalze 24 das Karbonband 8 sicher auf die Aufnahmespule 17 aufgewickelt.FIG. 1 shows a reloadable ink ribbon cassette 1, which consists of a pot-shaped base part 2 and a cover 3 which can be closed at the opening. The cover 3 can in this case be connected to the rear wall 4 of the base part 2 in an articulated manner and can be locked to the front wall 5 by means of locking lugs (not shown). On the bottom 6 of the bottom part 2, a feed spool 7 is rotatably supported, of which an ink ribbon, for. B. a one-time use carbon tape 8 can be unwound. The carbon strip 8 can be steered via deflection bolts 9, 10, 11 to an outlet opening 13 with a deflection 12 and arrives via an deflection 14 again in an entry opening 15 of the cassette 1. Then the carbon strip 8 is wound up via a deflection bolt 16 to a take-up spool 17 of carbon tape 8 passed. The take-up spool 17 is rotatably supported with its core 18 on a bearing pin 19 of a holder 20. In order to always ensure that the take-up spool 17 is positioned correctly on the bearing journal 19, the bearing bore 37 is designed as a blind hole, see FIG 17 always against a spike 23 on the floor 6 gela gerten feed roller 24 can be pressed. As a result, the carbon belt 8 is securely wound onto the take-up spool 17 when the feed roller 24 rotates.

Das freie Ende 25 des Farbbandes 8 der vollen Zuführspule 7 weist eine Befestigung für ein Führungselement zum Einfädeln des Farbbandes 8 um Umlenkpunkte 9, 10, 11, 12, 14, 16 in der Kassette 1 auf, die mit dem Kern 18 der Aufnahmespule 17 zum Aufwickeln des Farbbandes 8 fest verbindbar ist. Die Befestigung ist an dem freien Ende 25 eines Bandstückes 49 angeordnet, das den Farbbandwickel 26 überlappend umschlingt. Die Befestigung kann z. B. eine Öse 27 sein, in die ein Führungsstift 28 einsetzbar ist. Der Führungsstift 28 kann auch mittels einer Klebeverbindung mit dem Bandstück 49 fest verbunden sein. Zu diesem Zweck kann das freie Ende 25 des Bandstückes 49 eine Klebefläche aufweisen, mit der der Führungsstift 28 fest verbunden ist. Das freie Ende 25 des Bandstückes 49 hält den Farbwickel 26 mit einer festen Schlinge zusammen, derart, daß der Farbbandwickel 26 nicht abwickelbar ist. Zu diesem Zweck können die Berührungsflächen der Schlinge des Bandstückes 49 fest miteinander verklebt sein.The free end 25 of the ribbon 8 of the full supply spool 7 has a fastening for a guide element for threading the ribbon 8 around deflection points 9, 10, 11, 12, 14, 16 in the cassette 1, which with the core 18 of the take-up spool 17 Winding the ribbon 8 is firmly connected. The attachment is arranged at the free end 25 of a ribbon piece 49 which wraps around the ribbon roll 26 in an overlapping manner. The attachment can e.g. B. be an eyelet 27 into which a guide pin 28 can be inserted. The guide pin 28 can also be firmly connected to the band piece 49 by means of an adhesive connection. For this purpose, the free end 25 of the band piece 49 can have an adhesive surface with which the guide pin 28 is firmly connected. The free end 25 of the ribbon piece 49 holds the ink wrap 26 together with a fixed loop, such that the ink ribbon wrap 26 cannot be unwound. For this purpose, the contact surfaces of the loop of the band piece 49 can be firmly glued to one another.

Der Kern 18 der Aufwickelspule 17 weist eine Befestigungsvorrichtung für die Befestigung an dem freien Ende 25 des Farbbandes 8 auf der Zuführspule 7 auf. Die Befestigungsvorrichtung ist eine Aufnahmebohrung 29 in dem Kern 18 der Aufnahmespule 17, in die der Führungsstift 28 einsteckbar ist. Die Aufnahmebohrung 29 ist außerdem mit einem Durchtrittsschlitz 30 zu einer als Einfädelungsschlitz dienenden Ausnehmung 31 in dem äußeren Umfang des Kerns 18 der Aufwickelspule 17 versehen. Hierdurch wird das Befestigen des freien Endes 25 an dem Kern 18 der Aufwickelspule 17 sehr begünstigt. Der Führungsstift 28 weist einerseits eine gegenüber der Breite des Farbbandes 8 vorstehende Führungsnase 32 für Führungen 33, 34 des Bodens 6 in dem Bodenteil 2 und andererseits einen Griff 35 zum erleichterten Einfädeln des Farbbandes 8 auf. Der Griff 35 ist über eine Materialschwächung 36 mit dem Führungsstift 28 verbunden, die das Abtrennen des Griffes 35 nach dem Einsetzen des Führungsstifes 28 in die Aufnahmebohrung 29 begünstigt. Die Führungen 33, 34 sind im Bereich der Umlenkungen 9, 10, 11, 14, 16 in dem Bodenteil 2 angeordnet und weisen wallförmige Erhebungen auf.The core 18 of the take-up spool 17 has a fastening device for fastening to the free end 25 of the ink ribbon 8 on the feed spool 7. The fastening device is a receiving bore 29 in the core 18 of the take-up spool 17, into which the guide pin 28 can be inserted. The receiving bore 29 is also provided with a passage slot 30 to a recess 31 serving as a threading slot in the outer circumference of the core 18 of the take-up spool 17. As a result, the attachment of the free end 25 to the core 18 of the take-up spool 17 is very favored. The guide pin 28 has, on the one hand, a guide tab 32 for guides 33, 34 of the base 6 in the base part 2, which protrudes from the width of the ink ribbon 8, and on the other hand a handle 35 for facilitating the threading of the ink ribbon 8. The handle 35 is connected to the guide pin 28 via a material weakening 36, which favors the detachment of the handle 35 after the guide pin 28 has been inserted into the receiving bore 29. The guides 33, 34 are arranged in the region of the deflections 9, 10, 11, 14, 16 in the base part 2 and have wall-shaped elevations.

Um das Einsetzen der vollen Zuführspule 7 in die Kassette 1 zu erleichtern, ist der Spulenkern 38 der Zuführspule 7 auf der Oberseite mit einem vorstehenden Handgriff 39 versehen. Der Spulenkern 38 der Zuführspule 7 weist auf seiner Unterseite eine Ausnehmung 40 zur Aufnahme des Handgriffes 39 auf. Hierdurch ist es möglich, mehrere Zuführspulen 7 für eine sichere Lagerung aufeinander zu stapeln.In order to facilitate the insertion of the full supply reel 7 into the cassette 1, the coil core 38 of the supply reel 7 is provided with a protruding handle 39 on the upper side. The coil core 38 of the feed coil 7 has a recess 40 on its underside for receiving the handle 39. This makes it possible to stack several feed coils 7 on top of one another for safe storage.

Für den Versand und für die Lagerung der Farbbandspulen ist eine Verpackung 47 gemäß Figur 3 vorgesehen, die aus einem topfförmigen Bodenteil 41 und einem dieses verschließbaren Deckel 42 besteht. Der Deckel 42 und das Bodenteil 41 weisen je eine Öffnung 43, 44 zum Durchtritt des Handgriffes 39 auf, durch die ein Stapeln der Verpackungen 47 ebenfalls gewährleistet wird. Die Verpackung 47 ist quaderförmig ausgebildet. Der Kern 18 der Aufnahmespule 17 lagert in der Verpackung 47 in einer der freien Ecken zwischen dem topfförmigen Bodenteil 41 und dem Außenwickei 45 der Zuführspule 17. Außerdem kann der mit dem freien Ende 25 der Zuführspule 7 verbundene Führungsstift 28 mit einer Wand 46 des Bodenteils 41 z. B. durch eine Klebeverbindung lösbar verbunden sein.For the shipping and storage of the ribbon reels, a package 47 according to FIG. 3 is provided, which consists of a pot-shaped base part 41 and a cover 42 that can be closed. The lid 42 and the bottom part 41 each have an opening 43, 44 for the passage of the handle 39, through which a stacking of the packages 47 is also ensured. The packaging 47 is cuboid. The core 18 of the take-up spool 17 is stored in the package 47 in one of the free corners between the pot-shaped base part 41 and the outer winding 45 of the feed spool 17. In addition, the guide pin 28 connected to the free end 25 of the feed spool 7 can be connected to a wall 46 of the base part 41 e.g. B. be releasably connected by an adhesive connection.

Um das Karbonband stets stramm in der Kassette 1 zu haften, ist die Zuführspule 7 mit einer Zahnscheibe 48 fest verbunden, in deren Verzahnung ein Sperrzahn 52 eines abgefederten 53 Schwenkhebels 50 einrastbar ist. Der Umlenkbolzen 10 ist übrigens auf dem Schwenkhebel 50 gelagert. Wird das Karbonband 8 gemäß Figur 1 in Pfeilrichtung 65 bewegt, dann wird der Schwenkhebel 50 im Uhrzeigersinn um den Lagerstift 51 verschwenkt, derart, daß der Sperrzahn 52 außer Eingriff mit der Zahnscheibe 48 gelangt. Hierdurch wird die Zuführspule 7 zum Abwickeln des Karbonbandes 8 freigegeben. Beim Nachlassen der Spannung in dem Karbonband 8 gelangt der Sperrzahn 52 durch die Kraft der Feder 53 wieder in Eingriff mit der Zahnscheibe 48.In order to ensure that the carbon tape is always tightly adhered to in the cassette 1, the supply spool 7 is firmly connected to a toothed disk 48, in the toothing of which a locking tooth 52 of a spring-loaded 53 swivel lever 50 can be locked. The deflection pin 10 is incidentally mounted on the pivot lever 50. If the carbon belt 8 is moved in the direction of arrow 65 according to FIG. 1, then the pivoting lever 50 is pivoted clockwise around the bearing pin 51 in such a way that the ratchet tooth 52 disengages from the toothed disk 48. As a result, the supply reel 7 is released for unwinding the carbon ribbon 8. When the tension in the carbon band 8 decreases, the locking tooth 52 comes into engagement with the toothed disk 48 again due to the force of the spring 53.

Im Rahmen der Erfindung kann die Zahnscheibe 48 auch einstückig mit dem Kern 38 der Zuführspule 7 ausgebildet sein. Hierdurch wird die Montage der Zuführspule 7 in der Kassette 1 sehr erleichtert. Außerdem stützt die Zahnscheibe 48 den vollen Wickel der Zuführspule 7 derart ab, daß ein Ausbeulen des Wickels nicht möglich ist.In the context of the invention, the toothed disc 48 can also be formed in one piece with the core 38 of the feed coil 7. As a result, the assembly of the feed spool 7 in the cassette 1 is made very easy. In addition, the toothed pulley 48 supports the full winding of the feed spool 7 in such a way that the winding cannot bulge out.

Zum Auswechseln der Aufnahmespule 17 und der Zuführspule 7 braucht lediglich der Halter 20 mit der drehbar gelagerten Aufnahmespule 17 außer Eingriff mit dem Stachelrad 23 der Zuführwalze 24 gebracht werden. Das Außereingriffbringen des Halters 20 mit der Aufnahmespule 17 kann über einen in einer Vertiefung 55 einer Seitenwand 56 des Bodenteils 2 der Kassette 1 schwenkbar gelagerten Schwenkhebel 54 erfolgen. Mit Hilfe dieses Schwenkhebels ist der Halter 20 mit der Aufnahmespule 17 in eine Raststellung zum Entkoppeln des Stachelrades 23 mit dem Außenwickel 45 der Aufnahmespule 17 drückbar. Dieser Schwenkhebel 54 weist an einem Arm 57 einen Handgriff 58 und an einem zweiten Anschlagarm 59 einen Anschlag 60 auf, der mit dem Halter 20 in Eingriff bringbar ist. Um den Halter 20 in der Raststellung zu halten, ist der Anschlagarm 59 mit einer federnden Rastnase 61 versehen, die hinter einer Rastkante 62 an dem abgefederten Halter 20 in der Rastlage verrastbar ist. Nach dem Aufsetzen einer neuen Aufnahmespule 17 wird der Halter 20 über den Schwenkhebel 54 wieder entrastet, derart, daß das Stachelrad 23 mit dem Außenwickel der Aufnahmespule 17 wieder sicher in Eingriff gelangt. Um den Schwenkhebel 54 in der Außerwirkstellung in der Vertiefung 55 zu haften, weist diese (55) eine Kerbe 63 auf, in die der Schwenkhebel 54 mit einer Rastkante 64 einrastbar ist.To replace the take-up spool 17 and the feed spool 7, only the holder 20 with the rotatably mounted take-up spool 17 needs to be brought out of engagement with the pin wheel 23 of the feed roller 24. The disengagement of the holder 20 with the take-up spool 17 can take place via a pivot lever 54 which is pivotably mounted in a recess 55 in a side wall 56 of the base part 2 of the cassette 1. With the help of this pivoting lever, the holder 20 with the take-up spool 17 can be pressed into a detent position for decoupling the spiked wheel 23 with the outer winding 45 of the take-up spool 17. This pivot lever 54 has a handle 58 on an arm 57 and a stop 60 on a second stop arm 59, which can be brought into engagement with the holder 20. In order to keep the holder 20 in the latched position, the stop arm 59 is provided with a resilient latching lug 61, which can be latched behind the latched edge 62 on the spring-loaded holder 20 in the latched position. After putting on a new take-up spool 17, the holder 20 is unlocked again via the pivoting lever 54 in such a way that the sprocket 23 securely engages with the outer winding of the take-up spool 17 again. Around the pivot lever 54 in the non-operative position to stick in the recess 55, this (55) has a notch 63, in which the pivot lever 54 can be locked with a locking edge 64.

Die erfindungsgemäßen Farbbandspulen 7, 17 ermöglichen einen einfachen Austausch wobei die nicht mehr benötigten Austauschteile nur einen geringen Materialaufwand erfordern.The ribbon spools 7, 17 according to the invention enable simple replacement, the replacement parts no longer required requiring only a small amount of material.

Claims (7)

1. Exchange apparatus for a rechargeable cassette for a typewriter or similar office machine consisting of a coiled ink ribbon (8) as a feeding spool (7) and a spool core (18) for a takeup spool (17), characterised in that the loose end of the ink ribbon (8) on the full feed spool (7) has a guide pin (28) for threading the ink ribbon (8) round the deflection points (9, 10, 11, 12, 14, 16) in the cassette (1), that the guide pin (28) can be fastened to the core (18) of the takeup spool (17) by means of a receiving bore (29) within it and in that the receiving bore (29) has an entry slit (31) leading to a recess (30) which serves as a threading slit in the outer perimeter of the core (18) of the takeup spool (17).
2. Exchange apparatus as claimed in claim 1, characterised in that the free end of the ink ribbon (8) of the full feed spool (7) takes the form of a loop (27) in which the guide pin can be firmly fixed.
3. Exchange apparatus as claimed in claim 1 or 2, characterised in that the guide pin (28) has on one side a guide nose (32) protruding beyond the width of the ink ribbon (8) for guides (33, 34) of the base (6) in the base part (2) and a grip (35) for easier threading of the ink ribbon (8).
4. Exchange apparatus as claimed in claim 3, characterised in that the grip (35) is connected to the guide pin (28) by means of a weakening (36) which favours the separation of the grip (35) after the guide pin (28) is placed in the receiving bore (29).
5. Ribbon cassette for a typewriter or office machine of similar construction for the exchange apparatus as claimed in any one of the above claims with an exit and an entry opening for a carbon ribbon (8) in the cassette casing and with the feed (7) and takeup spool (17) as well as a feed roller (24) with a cog (23) for driving the takeup spool (17) through the carbon ribbon (8), wherein a spring (22) presses the carbon ribbon (8) on the takeup spool (17) against the cog (23) of the feed roller (24), so that the carbon ribbon (8) can be wound on to the takeup spool (17) by turning the feed roller (24), characterised in that the feed roller (24) with its cog (23) can be brought into a locatable position out of engagement with the carbon ribbon (8) of the takeup spool (17) so that the feed (7) and takeup (17) spools can be exchanged by opening up the lid (3).
6. Ribbon cassette as claimed in claim 5, wherein the feed roller (24) is fixed in a cup shaped base part (2) of the casing, which can be closed by a flat lid (3), and the takeup spool (17) is pivoted on a holder (20) which can be swung about a peg (19), and wherein a spring (22) presses the holder (20) and with it the carbon ribbon (8) on the takeup spool (17) against the cog (23) of the feed roller (24), characterised in that a rocking lever (54), positioned in a recess (55) in a side wall (56) of the base part (2) of the cassette (1), can be pressed by means of the holder (20) with the takeup spool (17) into a location for decoupling of the cog (23) from the perimeter (45) of the takeup spool (17).
7. Ribbon cassette as claimed in claim 6, characterised in that the rocking lever (54) has a hand grip (58) on an arm (57) and a stop (60), which can be brought into engagement with the holder (20), on a second stop arm (59).
EP86108158A 1985-07-11 1986-06-14 Replacement assembly for a refillable cartridge of a typewriter or the like Expired - Lifetime EP0214379B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3524730 1985-07-11
DE19853524730 DE3524730A1 (en) 1985-07-11 1985-07-11 RIBBON REELS FOR A RECHARGEABLE CASSETTE OF A TYPE OF TYPE OR OFFICE-LIKE DESIGN

Publications (2)

Publication Number Publication Date
EP0214379A1 EP0214379A1 (en) 1987-03-18
EP0214379B1 true EP0214379B1 (en) 1990-01-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108158A Expired - Lifetime EP0214379B1 (en) 1985-07-11 1986-06-14 Replacement assembly for a refillable cartridge of a typewriter or the like

Country Status (3)

Country Link
US (1) US4780010A (en)
EP (1) EP0214379B1 (en)
DE (2) DE3524730A1 (en)

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DE3623819C2 (en) * 1986-07-15 1994-12-15 Olympia Aeg Reloadable ribbon cassette for typewriters or office machines of a similar design
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DE3737657A1 (en) * 1987-11-06 1989-05-18 Olympia Aeg Reloadable ink-ribbon cartridge for typewriters or office machines of similar design
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Also Published As

Publication number Publication date
DE3668281D1 (en) 1990-02-22
DE3524730A1 (en) 1987-01-15
EP0214379A1 (en) 1987-03-18
US4780010A (en) 1988-10-25

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