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EP0035771B1 - Colour ribbon cassette for teleprinters - Google Patents

Colour ribbon cassette for teleprinters Download PDF

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Publication number
EP0035771B1
EP0035771B1 EP81101647A EP81101647A EP0035771B1 EP 0035771 B1 EP0035771 B1 EP 0035771B1 EP 81101647 A EP81101647 A EP 81101647A EP 81101647 A EP81101647 A EP 81101647A EP 0035771 B1 EP0035771 B1 EP 0035771B1
Authority
EP
European Patent Office
Prior art keywords
spool
cassette
colour ribbon
ribbon cassette
feed
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
EP81101647A
Other languages
German (de)
French (fr)
Other versions
EP0035771A1 (en
Inventor
Karl-Heinz Dipl.-Ing. Dreinhoff
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19803009505 external-priority patent/DE3009505C2/en
Priority claimed from DE19803045423 external-priority patent/DE3045423A1/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0035771A1 publication Critical patent/EP0035771A1/en
Application granted granted Critical
Publication of EP0035771B1 publication Critical patent/EP0035771B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/36—Alarms, indicators, or feed disabling devices responsive to ink ribbon breakage or exhaustion

Definitions

  • the invention relates to an ink ribbon cassette for typewriters or office machines according to the preamble of claim 1.
  • DE-A 28 20 266 describes a color and correction tape guide which contains a cassette for the ink ribbon and a cassette for the correction tape, the cassettes being arranged one above the other.
  • the supply spool is fixed and the take-up spool is slidably mounted in the cassette housing.
  • the take-up reel In the upper cassette, the take-up reel is guided in a slot on the underside of the cassette via a guide rod.
  • the associated take-up reel is guided in a guide slot on the top of the cassette, which cannot be seen, via spool pins.
  • a winding level indicator to check the tape supply is not provided.
  • the object of the invention is to provide a simple, compact ribbon cassette with small dimensions for teletype or office machines, which should be designed so that its winding condition can be tracked comfortably and precisely.
  • the winding state of the ribbon cassette can be monitored particularly easily. Since, in an advantageous embodiment, the guide pin has a different coloration than the surrounding cassette housing, the winding state can be detected optically easily and quickly even under unfavorable lighting conditions. Any parallax errors cannot occur.
  • the ribbon cassette shown in the figures for interchangeable use in a teleprinter consists of a cassette container 1 made of injection molded plastic and contains a feed spool 2 and a take-up spool 3. Both the feed spool 2 and the take-up spool 3 consist of a hub 5 provided with guide pins 4 and a the hub 5 movably arranged, the actual ribbon 6 carrying core 7.
  • the guide pins 4 are guided in guide slots 8 and 9 of the cassette container 1, namely both the lower part and the lid.
  • the ink ribbon 6 is wound around a deflecting roller 10, a spring 11 determining the band tension, deflecting points 12 and 13 and via a further deflecting roller 14 performed on the winding core of the take-up reel 3.
  • the take-up reel 3 is assigned a feed wheel 15 which is accessible from the outside via a gap 16 in the cassette housing.
  • the torque transmission from the feed wheel 15 to the take-up spool takes place by friction.
  • a sandpaper-like friction surface is arranged on the core of the feed wheel 15, which is in frictional engagement with the outer layer of the ribbon of the take-up spool 3.
  • the feed wheel 15 with the associated take-up reel can also be arranged in a mirror image on the left side of the cartridge analogously to the illustration in FIG. 1.
  • a compression spring 17 consisting of a single bracket, which is inserted in a simple manner in holders 18 of the cassette housing, generates the necessary pressing force between the supply spool and the deflection roller 10 and the winding spool 3 and the feed wheel 15.
  • the compression spring 17 is inserted into openings in the hub 5 .
  • the tightening force and thus the braking torque on the feed spool is generated by a piece of foam 19 attached to the cover of the cassette housing and acting on the feed spool 2.
  • the spring 11 also acts on the ink ribbon. This spring 11 provides a preload of the ink ribbon and a certain length compensation.
  • the winding condition of the cassette can be determined on the basis of the position of the guide pin 4 in the guide slot 8 of the feed reel 2. This guide pin 4 moves along the guide slot 8 depending on the winding condition of the cassette.
  • the marking M (shown in dashed lines) on the guide slot 8 facilitates reading.
  • the guide is pin 4 and the surrounding ribbon container housing 1 designed in different colors.
  • the guide pin 4 consist of a light, transparent plastic, whereas the ribbon cassette housing usually consists of black plastic.
  • the level indicator In principle, it is possible to assign the level indicator to both the supply spool and the take-up spool.
  • An assignment to the take-up spool depends on the write operation. It can e.g. B. the take-up spool can be wound irregularly, whereas the unwinding condition of the feed spool is clear and therefore much more accurate.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Description

Die Erfindung betrifft eine Farbbandkassette für Schreib- oder Büromaschinen gemäß dem Oberbegriff des Anspruches 1.The invention relates to an ink ribbon cassette for typewriters or office machines according to the preamble of claim 1.

In der DE-A 28 20 266 wird eine Farb- und Korrekturbandführung beschrieben, die eine Kassette für das Farbband und eine Kassette für das Korrekturband enthält, wobei die Kassetten übereinander angeordnet sind. Bei beiden Kassetten ist die Vorratsspule fest und die Aufwickelspule jeweils verschiebbar im Kassettengehäuse gelagert. In der Oberen Kassette ist die Aufwickelspule über eine Führungsstange in einem Schlitz an der Kassettenunterseite geführt. In der unteren, durch die obere Kassette verdeckten Kassette ist die zugehörige Aufwickelspule über Spulenzapfen in einem Führschlitz an der nicht einsehbaren Kassettenoberseite geführt. Eine Wickelstandsanzeige zur Kontrolle des Bandvorrats ist nicht vorgesehen.DE-A 28 20 266 describes a color and correction tape guide which contains a cassette for the ink ribbon and a cassette for the correction tape, the cassettes being arranged one above the other. In both cassettes, the supply spool is fixed and the take-up spool is slidably mounted in the cassette housing. In the upper cassette, the take-up reel is guided in a slot on the underside of the cassette via a guide rod. In the lower cassette, which is hidden by the upper cassette, the associated take-up reel is guided in a guide slot on the top of the cassette, which cannot be seen, via spool pins. A winding level indicator to check the tape supply is not provided.

Es ist außerdem aus der DE-A2553329 eine Farbbandkassette bekannt, bei der die Aufnahmespule an einem schwenkbaren Hebel gelagert ist, der die Verschieblichkeit der Spule auf einer Kreisbahn ermöglicht, eine Wickelstandsanzeige ist auch hier nicht vorgesehen.It is also known from DE-A2553329 a ribbon cassette, in which the take-up spool is mounted on a pivotable lever, which enables the spool to move on a circular path, and a winding position indicator is not provided here either.

Aufgabe der Erfindung ist es, für Fernschreib-oder Büromaschinen eine einfache kompakte Farbbandkassette mit geringen Ausmaßen bereitzustellen, die dabei so ausgestaltet sein soll, daß ihr Wicklungszustand bequem und genau verfolgt werden kann.The object of the invention is to provide a simple, compact ribbon cassette with small dimensions for teletype or office machines, which should be designed so that its winding condition can be tracked comfortably and precisely.

Diese Aufgabe wird bei einer Farbbandkassette der eingangs genannten Art gemäß dem kennzeichnenden Teil des ersten Anspruches gelöst.This object is achieved in an ink ribbon cassette of the type mentioned at the outset in accordance with the characterizing part of the first claim.

Durch die Lageveränderung des dem Kassettendeckel zugeordneten Führungszapfen der Zuführungsspule entlang dem Führungsschlitz mit den darauf angebrachten Markierungen läßt sich der Wicklungszustand der Farbbandkassette besonders einfach verfolgen. Da bei einer vorteilhaften Ausführungs form der Führungszapfen gegenüber dem umgebenden Kassettengehäuse eine unterschiedliche Farbgebung aufweist, wird der Wicklungszustand optisch leicht und schnell auch unter ungünstigen Lichtverhältnissen erfaßbar. Irgendwelche Parallaxenfehler können nicht auftreten.By changing the position of the guide pin of the supply spool assigned to the cassette cover along the guide slot with the markings made thereon, the winding state of the ribbon cassette can be monitored particularly easily. Since, in an advantageous embodiment, the guide pin has a different coloration than the surrounding cassette housing, the winding state can be detected optically easily and quickly even under unfavorable lighting conditions. Any parallax errors cannot occur.

Ausführungsformen der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden beispielsweise näher beschrieben.Embodiments of the invention are shown in the drawings and are described in more detail below, for example.

Es zeigen

  • Figur 1 eine Draufsicht der erfindungsgemäßen Farbbandkassette bei geöffnetem Deckel und
  • Figur 2 eine Seitenansicht der Farbbandkassette.
Show it
  • Figure 1 is a plan view of the ribbon cassette according to the invention with the cover open and
  • Figure 2 is a side view of the ribbon cassette.

Die in den Figuren dargestellte Farbbandkassette zur auswechselbaren Verwendung in einer Fernschreibmaschine besteht aus einem Kassettenbehälter 1 aus Plastikspritzguß und enthält eine Zuführungsspule 2 und eine Aufwickelspule 3. Sowohl die Zuführungsspule 2 als auch die Aufwickelspule 3 bestehen aus einer mit Führungszapfen 4 versehenen Nabe 5 und einem auf der Nabe 5 beweglich angeordneten, das eigentliche Farbband 6 tragenden Kern 7. Die Führungszapfen 4 sind dabei in Führungsschlitzen 8 und 9 des Kassettenbehälters 1, und zwar sowohl des Unterteiles als auch des Deckels geführt.The ribbon cassette shown in the figures for interchangeable use in a teleprinter consists of a cassette container 1 made of injection molded plastic and contains a feed spool 2 and a take-up spool 3. Both the feed spool 2 and the take-up spool 3 consist of a hub 5 provided with guide pins 4 and a the hub 5 movably arranged, the actual ribbon 6 carrying core 7. The guide pins 4 are guided in guide slots 8 and 9 of the cassette container 1, namely both the lower part and the lid.

Von der Zuführungsspule 2 aus, die mit den Führungszapfen 4 in den Führungsschlitzen 8 des Behälterunterteils und des Behälterdeckels beidseitig gelagert ist, wird das Farbband 6 um eine Umlenkrolle 10, einer den Bandzug bestimmenden Feder 11, Umlenkstellen 12 und 13 und über eine weitere Umlenkrolle 14 auf den Wickelkern der Aufwickelspule 3 geführt. Der Aufwickelspule 3 ist dabei ein Vorschubrad 15 zugeordnet, das über eine Lücke 16 des Kassettengehäuses von außen zugänglich ist. Die Drehmomentübertragung von dem Vorschubrad 15 auf die Aufwickelspule erfolgt durch Reibschluß. Dazu ist auf dem Kern des Vorschubrades 15 eine sandpapierartige Reibfläche angeordnet, die in Kraftschluß mit der äußeren Lage des Farbbandes der Aufwickelspule 3 steht.From the supply spool 2, which is supported on both sides with the guide pins 4 in the guide slots 8 of the lower part of the container and the cover of the container, the ink ribbon 6 is wound around a deflecting roller 10, a spring 11 determining the band tension, deflecting points 12 and 13 and via a further deflecting roller 14 performed on the winding core of the take-up reel 3. The take-up reel 3 is assigned a feed wheel 15 which is accessible from the outside via a gap 16 in the cassette housing. The torque transmission from the feed wheel 15 to the take-up spool takes place by friction. For this purpose, a sandpaper-like friction surface is arranged on the core of the feed wheel 15, which is in frictional engagement with the outer layer of the ribbon of the take-up spool 3.

Soll mit einer derartig ausgebildeten Farbbandkassette das Farbband in zwei Richtungen transportiert werden, so kann analog zur Darstellung der Fig. 1 das Vorschubrad 15 mit der zugeordneten Aufwickelspule spiegelbildlich auch auf der linken Seite der Kassette angeordnet werden.If the ink ribbon is to be transported in two directions with such an ink ribbon cassette, the feed wheel 15 with the associated take-up reel can also be arranged in a mirror image on the left side of the cartridge analogously to the illustration in FIG. 1.

Ein aus einem einzigen Bügel bestehende Druckfeder 17, die in einfacher Weise in Halterungen 18 des Kassettengehäuses eingesteckt ist, erzeugt die notwendige Andruckkraft zwischen Zuführungsspule und der Umlenkrolle 10 und der Aufwickelspule 3 und dem Vorschubrad 15. Die Druckfeder 17 ist in Öffnungen der Nabe 5 eingesteckt.A compression spring 17 consisting of a single bracket, which is inserted in a simple manner in holders 18 of the cassette housing, generates the necessary pressing force between the supply spool and the deflection roller 10 and the winding spool 3 and the feed wheel 15. The compression spring 17 is inserted into openings in the hub 5 .

Die Anzugskraft und damit das Bremsmoment auf die Zuführungsspule wird durch ein im Deckel des Kassettengehäuses angebrachtes, auf die Zuführungsspule 2 wirkendes Schaumstoffstück 19 erzeugt. Zusätzlich dazu wirkt noch auf das Farbband die Feder 11. Diese Feder 11 sorgt für eine Vorspannung des Farbbandes und einen gewissen Längenausgleich.The tightening force and thus the braking torque on the feed spool is generated by a piece of foam 19 attached to the cover of the cassette housing and acting on the feed spool 2. In addition to this, the spring 11 also acts on the ink ribbon. This spring 11 provides a preload of the ink ribbon and a certain length compensation.

Da sowohl die Zuführungsspule 2 als auch die Aufwickelspule 3 in der Kassette verschieblich gelagert sind, ist damit eine besonders kompakte Bauweise des Kassettenbehälters möglich. Der Umspulungszustand der Kassette kann dabei anhand der Lage des Führungszapfens 4 im Führungsschlitz 8 der Zuführungsspule 2 festgestellt werden. Dieser Führungszapfen 4 bewegt sich in Abhängigkeit vom Wicklungszustand der Kassette entlang dem Führungsschlitz 8. Die am Führungsschlitz 8 angebrachte Markierung M (gestrichelt dargestellt) erleichtert dabei das Ablesen.Since both the supply reel 2 and the take-up reel 3 are slidably mounted in the cassette, a particularly compact design of the cassette container is possible. The winding condition of the cassette can be determined on the basis of the position of the guide pin 4 in the guide slot 8 of the feed reel 2. This guide pin 4 moves along the guide slot 8 depending on the winding condition of the cassette. The marking M (shown in dashed lines) on the guide slot 8 facilitates reading.

Um das Ablesen auch bei schlechten Lichtverhältnissen zu ermöglichen, ist der Führungszapfen 4 und das umgebende Farbbandbehältergehäuse 1 in unterschiedlicher Farbe ausgelegt.In order to enable reading even in poor lighting conditions, the guide is pin 4 and the surrounding ribbon container housing 1 designed in different colors.

So kann z. B. der Führungszapfen 4 aus einem hellen, durchsichtigen Kunststoff bestehen, wohingegen das Farbbandkassettengehäuse üblicherweise aus schwarzem Kunststoff besteht.So z. B. the guide pin 4 consist of a light, transparent plastic, whereas the ribbon cassette housing usually consists of black plastic.

Prinzipiell ist es möglich, die Füllstandsanzeigevorrichtung sowohl der Zuführungsspule als auch der Aufwickelspule zuzuordnen. Eine Zuordnung zu der Aufwickelspule ist jedoch abhängig vom Schreibbetrieb. Es kann z. B. die Aufwickelspule unregelmäßig aufgewickelt sein, wohingegen der Abwickelzustand der Zuführungsspule eindeutig ist und damit wesentlich genauer.In principle, it is possible to assign the level indicator to both the supply spool and the take-up spool. An assignment to the take-up spool depends on the write operation. It can e.g. B. the take-up spool can be wound irregularly, whereas the unwinding condition of the feed spool is clear and therefore much more accurate.

Claims (7)

1. A colour ribbon cassette for typewriters or office machines comprising a housing (1) which accommodates the colour ribbon (6), a feed spool (2), and a winding spool (3) which is displaceably positioned in a slot (9) in the cassette housing, characterised in that both the feed spool (2) and the winding spool (3) are displaceably positioned in slots (8, 9) in the cover and the lower part of the cassette housing (1) and are outwardly pressed away from one another along their guide slots (8, 9) by pressure spring elements (17) ; and that a guide pin (4) of a spool, which moves along the guide slot (8, 9) in accordance with the filling state of the cassette (1), serves as an indicating element for the filling state reading and the guide slot (8, 9) has filling state markings (M) in the range of movement of the guide pin (4).
2. A colour ribbon cassette according to Claim 1, characterised in that the feed spool (2), and the winding spool (3), is allotted a hub (5) which is provided with a guide pin (4) and has a winding core (7) movably mounted thereon.
3. A colour ribbon cassette according to one of Claims 1 or 2, characterised in that the pressure spring elements consist o.f a single spring clip (17) which is braced between the feed spool (2) and the winding spool (3).
4. A colour ribbon cassette according to one of Claims 1 to 3, characterised in that at least the winding spool (3) is allotted a feed wheel (15) which drives the spool and which is accessible from the outside through a cassette gap (16).
5. A colour ribbon cassette according to Claim 1, characterised in that the filling state markings (M) are assigned to the feed spool (8).
6. A colour ribbon cassette according to Claim 1 or Claim 5, characterised in that the guide pin (4) and the guide slot (8) are of different colours.
7. A colour ribbon cassette according to one of Claims 1 to 6, characterised in that, in the cover of the cassette housing (1), there is arranged a piece of foamed material (19) which rests on the feed spool (2) and thereby produces the braking moment for the feed spool.
EP81101647A 1980-03-12 1981-03-06 Colour ribbon cassette for teleprinters Expired EP0035771B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19803009505 DE3009505C2 (en) 1980-03-12 1980-03-12 Ribbon cassette for typewriters or office machines
DE3009505 1980-03-12
DE3045423 1980-12-02
DE19803045423 DE3045423A1 (en) 1980-12-02 1980-12-02 Coloured type-ribbon cassette for teleprinter or typewriter - has post moving along slot to indicate amount of ribbon on spool

Publications (2)

Publication Number Publication Date
EP0035771A1 EP0035771A1 (en) 1981-09-16
EP0035771B1 true EP0035771B1 (en) 1984-07-25

Family

ID=25784262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101647A Expired EP0035771B1 (en) 1980-03-12 1981-03-06 Colour ribbon cassette for teleprinters

Country Status (6)

Country Link
EP (1) EP0035771B1 (en)
AU (1) AU6825781A (en)
BR (1) BR8101438A (en)
CA (1) CA1175001A (en)
MX (1) MX152278A (en)
ZA (1) ZA811603B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045461C2 (en) * 1980-12-02 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Switching device for a ribbon cassette
US4523868A (en) * 1983-07-18 1985-06-18 International Business Machines Corporation Ribbon feed cartridge
US4747715A (en) * 1985-11-04 1988-05-31 Creative Associates Vacuum buffered ribbon transport system
GB202216618D0 (en) * 2022-11-08 2022-12-21 Dover Europe Sarl Tape Transfer Apparatus and Method of Operation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2553329A1 (en) * 1974-11-25 1976-05-26 Olivetti & Co Spa DETACHABLE CASSETTE FOR A CARBON TAPE FROM WRITING MACHINES AND OTHER OFFICE MACHINES
DE2820266A1 (en) * 1977-05-27 1978-11-30 Ibm COLOR AND CORRECTION RIBBON GUIDE FOR TYPING MACHINES AND THE like.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147439A (en) * 1977-09-06 1979-04-03 A. B. Dick Company Ribbon cartridge with improved ribbon tensioning and locking

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2553329A1 (en) * 1974-11-25 1976-05-26 Olivetti & Co Spa DETACHABLE CASSETTE FOR A CARBON TAPE FROM WRITING MACHINES AND OTHER OFFICE MACHINES
DE2820266A1 (en) * 1977-05-27 1978-11-30 Ibm COLOR AND CORRECTION RIBBON GUIDE FOR TYPING MACHINES AND THE like.

Also Published As

Publication number Publication date
BR8101438A (en) 1981-09-15
AU6825781A (en) 1981-09-17
MX152278A (en) 1985-06-19
CA1175001A (en) 1984-09-25
ZA811603B (en) 1982-03-31
EP0035771A1 (en) 1981-09-16

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