EP0011727A2 - Typewriter or similar business machine with a disc-shaped type carrier - Google Patents

Typewriter or similar business machine with a disc-shaped type carrier Download PDF

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Publication number
EP0011727A2
EP0011727A2 EP79104281A EP79104281A EP0011727A2 EP 0011727 A2 EP0011727 A2 EP 0011727A2 EP 79104281 A EP79104281 A EP 79104281A EP 79104281 A EP79104281 A EP 79104281A EP 0011727 A2 EP0011727 A2 EP 0011727A2
Authority
EP
European Patent Office
Prior art keywords
machine according
ribbon
protective strip
disc
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP79104281A
Other languages
German (de)
French (fr)
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EP0011727B1 (en
EP0011727A3 (en
Inventor
Alfred Keiter
Werner Buss
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 Werke AG
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Olympia Werke AG
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Filing date
Publication date
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Publication of EP0011727A2 publication Critical patent/EP0011727A2/en
Publication of EP0011727A3 publication Critical patent/EP0011727A3/en
Application granted granted Critical
Publication of EP0011727B1 publication Critical patent/EP0011727B1/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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/62—Shields or masks
    • 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
    • B41J35/04—Ink-ribbon guides

Definitions

  • the invention relates to a typewriter or similar office machine with a disk-shaped type carrier and a device for preventing the ribbon from getting caught with a disk-shaped type carrier of the type specified in the preamble of claim 1.
  • In typewriters it is known to lift the ink ribbon only for the type print in the area of the line to be labeled, so that as long as no type print is made, the set line of the paper to be labeled remains freely visible to the person operating the machine.
  • the invention has for its object to design the individual parts of the machine that are absolutely necessary for writing in the area of the imprint in such a way that no faults occur in the type imprint or in the correction process. This object is achieved by the invention specified in the patent claim.
  • the machine according to the invention prevents in the simplest way that the disk-shaped type carrier can get caught with the ink ribbon or other individual parts of the machine present at the impression point.
  • the protective strip according to the invention also guides the ink ribbon in the area of the impression point and also serves as a line judge. As a result, the number of individual parts present in the area of the impression point is reduced compared to other known arrangements.
  • the protective strip can be arranged and locked with simple means. Due to the advantageous embodiment of the subject matter of the invention, the subject matter of the invention becomes cheap and enables easy assembly.
  • the further advantageous refinements of the subject matter of the invention according to patent claims 9 and 12 enable the use even in machines with a switchable step division.
  • FIG. 1 shows a carriage 3 which can be moved along the recording medium 1 by means not shown, with a disc-shaped type carrier 5 which is adjustably mounted thereon.
  • the record carrier 1 can be transported by means of the platen roller 7, which can be driven in a known manner by means not shown.
  • the disk-shaped type carrier 5 has on its circumference radially extending type arms 9, at the ends of which the type elements 11 are arranged.
  • the type elements 11 are brought in front of the impression point 13 by control means which are operatively connected to the disc-shaped type carrier 5, the type elements being brought to the impression on the recording medium 1 by means of a not shown hammer with the aid of an ink ribbon 15.
  • the ink ribbon 15 is unwound from a supply spool 19 which is interchangeably attached to the carriage 3 arranged cassette 17 is rotatably mounted, and passes through a slot of this cassette 17 to 2 spaced ribbon guide fork 21, 23.
  • These ribbon guide fork 21, 23 guide the ribbon 15 in the area of the impression point parallel to the plane of the recording medium 1.
  • the ribbon 15 After leaving the Ribbon guide fork 21, 23, the ribbon 15 passes through an entry slot into the ribbon cassette 17 to a take-up reel 25, which winds up the ribbon 15 in a known manner by means not shown.
  • the ribbon guide fork 21, 23 are slidably arranged in guides 27, 29 fixedly connected to the slide 3 in order to lift the ribbon into the printing position according to FIG. 1 by means not shown.
  • the ribbon guide fork 21, 23 are lowered again with the ribbon 15 so that the person operating the machine can see the writing line.
  • the guides 27, 29 for the ribbon fork 21, 23 arranged on both sides of the disc-shaped type carrier have inwardly directed bearing arms 31, 33, between which a thin protective strip 35 below the print line between the disc-shaped type carrier 5 and the part of the ribbon guided parallel to the writing plane 15 is arranged taut.
  • Eccentric bolts 37, 39 are frictionally connected to this protective strip 35 on both sides, their eccentrics 38, 40 in bearing bores 41, 43 of the protective strip 35 and their bolts 45, 47 being displaceable in elongated holes 49, 51 of the bearing arms 31, 33 arranged in the writing direction and by screws 53, 55 are locked.
  • the protective strip 35 which is provided on its upper edge 57 with line markings 59 and with a center marking 61, can be aligned precisely with the lines.
  • the line markings 59 and the center marking 61 are formed in one piece with the protective strips 35.
  • the character markings 59 consist of projections 62 on a common one Straight edges 63.
  • the projections 62 are each spaced by half an inch. This applies in particular to division switching devices with 10 characters or 12 characters per inch.
  • the protective strip 35 has a U-shaped recess 65 which is open toward its upper edge 57 and for the passage of the type arms 9 of the disk-shaped type carrier 5 which are to be moved for printing.
  • the center marking 61 is arranged in the center above the u-shaped recess 65 on a web which runs parallel to the common straight line of the projections 62 and which is firmly connected to the upper edge 57 of the protective strip 35 via two lateral alignment webs 69, 71.
  • the lateral straightening webs 69, 71 are spaced apart by an inch plus a full character width and are so narrow that the straightening webs 69, 71 are always between two adjacent letters. Since this does not cover any letters, the legibility of the printed lines is always guaranteed.
  • the upper web 67 is also so far from the edges 59 of the projections 62 and so narrow that its width is smaller than the smallest distance between two lines. The web 67 is always in the free space between two successive lines when writing. "
  • the protective strip 35 also has a continuous leading edge 73 below the lower longitudinal edge of the ink ribbon 15, through which the radially extending type arms 9, which are not yet in their starting position, can be pressed with types 11 arranged at their ends from the region of the ink ribbon plane.
  • the leading edge 73 is bent somewhat from the recording medium 1 and protrudes below the lower longitudinal edge of the ink ribbon 15. The protective strip 35 thus prevents the ink ribbon 15 from becoming caught on the circumferential one disc-shaped type carrier 5 even if the type arenas 9 of the disc-shaped type carrier 5 have not yet been returned to their starting position.
  • the protective strip 35 it is also possible for the protective strip 35 to be arranged in a resilient manner between the guide parts 27, 29 for lifting and lowering the ribbon forks 21, 23.
  • the protective strip has a shoulder bolt 75 at both ends, which can be locked by means of a locking recess 77 on a spring-shaped arm and an edge 81 on the guides 27 and 29, see FIG. 3.
  • the two legs 83, 8, 5 of the U-shaped recess 65 are rounded on the inlet side for the resilient type ratchet 9 of the disc-shaped type carrier 5. This prevents the resilient type arms 9, which are still located in the U-shaped recess, from not catching on the legs 83, 85 during the restoring movement of the disc-shaped type supports 5 immediately after the printing process.
  • the roundings on the legs 83, 85 even promote a quick return of your type arms 9 of the disk-shaped type carrier 5 (FIG. 3).
  • the bolts 45, 47 of the eccentric bolts 37, 39 provided with a slot for adjustment are fixed according to FIG. 1 by means of the nuts 53 55. This fixing can also be done in that the bolts 45, 47 are provided with an internal thread 42 into which Sch ben can be screwed according to Figure 2.

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  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

1. A typewriter or similar office machine having a disc-shaped character carrier mounted on a carriage and having a device preventing the entanglement of a colour ribbon, which is guided parallel to the plane of typing with the aid of ribbon guides and which can be brought into the printing region, with the disc-shaped character carrier, characterised in that a thin taut protection strip (35) is fixed to the carriage (3) below the printed line and between the disc-shaped character carrier (5) and the part of the ribbon (15) which is guided parallel to the plane of typing and has a continuous guide edge (73) by means of which the radial character arms (9) of the character carrier (5), which are not yet in their operating position, may be urged out of the region of the ribbon plane.

Description

Die Erfindung betrifft eine Schreib- oder ähnliche Büromaschine mit einem scheibenförmigen Typenträger und einer Einrichtung zum Verhindern des Verhakens des Farbbandes mit einem scheibenförmigen Typenträger der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a typewriter or similar office machine with a disk-shaped type carrier and a device for preventing the ribbon from getting caught with a disk-shaped type carrier of the type specified in the preamble of claim 1.

Bei Schreibmaschinen ist es bekannt, das Farbband jeweils nur zum Typenabdruck in den Bereich der zu beschriftenden Zeile anzuheben, damit, solange kein Typenabdruck ausgeführt wird, die eingestellte Zeile des zu beschriftenden Papiers für die die Maschine bedienende Person frei sichtbar bleibt.In typewriters, it is known to lift the ink ribbon only for the type print in the area of the line to be labeled, so that as long as no type print is made, the set line of the paper to be labeled remains freely visible to the person operating the machine.

Im Gegensatz zu Typenhebeldruckwerken ist der Zwischenraum zwischen der Rotationsebene des scheibenförmigen Typenträgers und dem Aufzeichnungsträger derart klein, daß die Typen an den freien Enden der federnden, radial verlaufenden Typenarme leicht mit dem Farbband verhaken. Hierdurch sind saubere Typenabdrücke nicht mehr gewährleistet. Dieser Nachteil wird durch den Gegenstand der deutschen Auslegeschrift 2 616 345 dadurch behoben, daß von den Armen der Führungsgabel gegeneinander gerichtete, bis nahe an die Abdruckstelle tragende und in Richtung auf den-Aufzeichnungsträger federnd wirkende Führungselemente für das Farbband zwischen diesen und dem scheibenförmigen Typenträger angeordnet sind. Diese bekannte Anordnung führt einerseits zu einer Erhöhung der Energie.zum Transport des Farbbandes und ist andererseits für Schreibmaschinen mit einer Korrektur- . einrichtung weniger geeignet. Durch die zur Abdruckstelle hin ragenden federnden Führungselemente wird der Zwischenraum zwischen dem Farbband und dem Aufzeichnungsträger noch weiter verkleinert, derart, daß ein klebriges Korrekturband nicht mehr ohne Störungen vor die Abdruckstelle eingeschwenkt werden kann.In contrast to type lever printing units, the space between the plane of rotation of the disc-shaped type carrier and the recording medium is so small that the types easily get caught on the ribbon at the free ends of the resilient, radially extending type arms. As a result, clean type prints are no longer guaranteed. This disadvantage is remedied by the subject matter of the German design specification 2,616,345 in that guide elements for the ink ribbon, which are directed towards one another and bear towards the impression point and act resiliently towards the recording medium, are arranged between the latter and the disk-shaped type carrier by the arms of the guide fork are. This known arrangement leads on the one hand to an increase in the energy for transporting the ink ribbon and is on the other hand for typewriters with a correction. furnishing less suitable. Due to the resilient guide elements projecting towards the imprinting point, the space between the ink ribbon and the recording medium is further reduced in such a way that a sticky correction tape can no longer be pivoted in front of the imprinting point without interference.

Weiterhin ist bei bekannten Anordnungen in dem obengenannten Zwischenraum auch noch der Zeilenrichter und die Mittenmarkierung angeordnet. Auch hierdurch wird der Zwischenraum weiter beengt.Furthermore, in the case of known arrangements in the space mentioned above, the line judge and the center marking are also indicated arranges. This also narrows the gap.

Der Erfindung liegt die Aufgabe zugrunde, die zum Schreiben im Bereich der Abdruckstelle unbedingt erforderlichen Einzelteile der Maschine derart auszubilden, daß keine Störungen beim Typenabdruck oder auch beim Korrekturvorgang auftreten. Diese Aufgabe wird durch die im Patentanspruch angegebene Erfindung gelöst.The invention has for its object to design the individual parts of the machine that are absolutely necessary for writing in the area of the imprint in such a way that no faults occur in the type imprint or in the correction process. This object is achieved by the invention specified in the patent claim.

Die erfindungsgemäße Maschine verhindert auf einfachste Weise, daß der scheibenförmige Typenträger mit dem Farbband oder sonstigen an der Abdruckstelle vorhandenen Einzelteilen der Maschine verhaken kann. Der erfindungsgemäße Schutzstreifen führt außerdem das Farbband im Bereich der Abdruckstelle und dient außerdem gleichzeitig als Zeilenrichter. Hierdurch wird die Anzahl der im Bereich der Abdruckstelle vorhandenen Einzelteile gegenüber anderen bekannten Anordnungen reduziert.The machine according to the invention prevents in the simplest way that the disk-shaped type carrier can get caught with the ink ribbon or other individual parts of the machine present at the impression point. The protective strip according to the invention also guides the ink ribbon in the area of the impression point and also serves as a line judge. As a result, the number of individual parts present in the area of the impression point is reduced compared to other known arrangements.

Durch die vorteilhafte Ausgestaltung des Erfindungsgegenstandes nach Patentanspruch 6 ist der Schutzstreifen mit einfachen Mitteln ein- und feststellbar angeordnet. Durch die vorteilhafte Ausgestaltung des Erfindungsgegenstandes nach Patentanspruch 7 wird der Erfindungsgegenstand billig und ermöglicht eine leichte Montage. Die weiteren vorteilhaften Ausgestaltungen des Erfindungsgegenstandes nach den Patentansprüchen 9 und 12 ermöglichen den -Einsatz auch bei Maschinen mit einer umschaltbaren Schritteilung.Due to the advantageous embodiment of the subject matter of the invention, the protective strip can be arranged and locked with simple means. Due to the advantageous embodiment of the subject matter of the invention, the subject matter of the invention becomes cheap and enables easy assembly. The further advantageous refinements of the subject matter of the invention according to patent claims 9 and 12 enable the use even in machines with a switchable step division.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements of the subject matter of the invention can be found in the further subclaims.

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen näher erläutert. Es zeigen:

  • Figur 1 eine schaubildliche Darstellung eines Teiles einer Schreibmaschine mit dem Erfindungsgegenstand,
  • Figur 2 eine Einzelheit aus Figur 1,
  • Figur 3 eine zweite Befestigungsmöglichkeit des Schutzstreifens mit der Aufnahme für den scheibenförmigen Typenträger und
  • Figur 4 eine Einzelheit aus Figur 1
The invention is explained in more detail below on the basis of exemplary embodiments. Show it:
  • FIG. 1 shows a diagrammatic representation of part of a typewriter with the subject matter of the invention,
  • FIG. 2 shows a detail from FIG. 1,
  • Figure 3 shows a second way of attaching the protective strip with the receptacle for the disc-shaped type carrier and
  • FIG. 4 shows a detail from FIG. 1

In Figur 1 ist ein längs des Aufzeichnungsträgers 1 durch nicht dargestellte Mittel bewegbarer Schlitten 3 mit einem auf diesem einstellbar gelagerten scheibenförmigen Typenträger 5 dargestellt. Der Aufzeichnungsträger 1 ist mittels der Schreibwalze 7 transportierbar, welche über nicht dargestellte Mittel in bekannter Weise antreibbar ist. Der scheibenförmige Typenträger 5 weist an seinem Umfang radial verlaufende Typenarme 9 auf, an deren Enden jeweils die Typenelemente 11 angeordnet sind. Die Typenelemente 11 werden durch mit dem scheibenförmigen Typenträger 5 in Wirkverbindung stehende Steuermittel vor die Abdruckstelle 13 gebracht, wobei die Typenelemente durch einen nicht dargestellten Hammer mit Hilfe eines Farbbandes 15 auf dem Aufzeichnungsträger 1 zum Abdruck gebracht werden. Das Farbband 15 wird von einer Vorratsspule 19 abgewickelt, welche in einer auf dem Schlitten 3 austauschbar angeordneten Kassette 17 drehbar gelagert ist, und gelangt durch einen Schlitz dieser Kassette 17 zu 2 im Abstand zueinander angeordneten Farbbandführungsgabel 21, 23. Diese Farbbandführungsgabel 21, 23 führen das Farbband 15 im Bereich der Abdruckstelle parallel zur Ebene des Aufzeichnungsträgers 1. Nach dem Verlassen der Farbbandführungsgabel 21, 23 gelangt das Farband 15 durch einen Eintrittsschlitz wieder in die Farbbandkassette 17 zu einer Aufwickelspule 25, welche das Farbband 15 in bekannter Weise durch nicht dargestellte Mittel aufwickelt. Die Farbbandführungsgabel 21, 23 sind in fest mit dem Schlitten 3 verbundenen Führungen 27, 29 gleitbar angeordnet, um das Farbband über nicht dargestellte Mittel in die Abdrucklage gemäß Figur 1 anzuheben. Nach dem Abdruckvorgang werden die Farbbandführungsgabel 21, 23 mit dem Farbband 15 wieder abgesenkt, damit die die Maschine bedienende Person die Schreibzeile einsehen kann. Die beiderseits des scheibenförmigen Typenträgens angeordneten Führungen 27, 29 für die Farbbandgabel 21, 23 weisen nach innen gerichtete Lagerarme 31, 33 auf, zwischen denen ein dünner Schutzstreifen 35 unterhalb der Druckzeile zwischen dem scheibenförmigen Typenträger 5 und dem parallel zur Schreibebene-geführten Teil des Farbbandes 15 gespannt angeordnet ist. Mit diesem Schutzstreifen 35 sind beidseitig Exzenterbolzen 37, 39 reibungsschlüssig verbunden, wobei deren Exzenter 38, 40 in Lagerbohrungen 41, 43 des Schutzstreifens 35 und deren Bolzen 45, 47 in in Schreibrichtung angeordneten Langlöchern 49, 51 der Lagerarme 31, 33 verschiebbar und durch Schrauben 53, 55 arretierbar gelagert sind. Mittels dieser Exzenterbolzen 37, 39 ist der Schutzstreifen 35, der an seiner Oberkante 57 mit Zeilenmarkierungen 59 und mit einer Mittenmarkierung 61 versehen ist, genau auf die Zeilen ausrichtbar angeordnet. Die Zeilenmarkierungen 59 und die Mittenmarkierung 61 sind mit den Schutzstreifen 35 einstückig ausgebildet. Die Zeichenmarkierungen 59 bestehen aus Vorsprüngen 62 mit auf einer gemeinsamen Geraden befindlichen Kanten 63. Damit der Erfindungsgegenstand auch bei Maschinen mit einer Schritt-Teilungsumschalteinrichtung einsetzbar ist, haben die Vorsprünge 62 jeweils einen Abstand von einem halben Zoll. Dieses gilt insbesondere bei Teilungsumschalteinrichtungen mit 10 Zeichen bzw. 12 Zeichen pro Zoll.FIG. 1 shows a carriage 3 which can be moved along the recording medium 1 by means not shown, with a disc-shaped type carrier 5 which is adjustably mounted thereon. The record carrier 1 can be transported by means of the platen roller 7, which can be driven in a known manner by means not shown. The disk-shaped type carrier 5 has on its circumference radially extending type arms 9, at the ends of which the type elements 11 are arranged. The type elements 11 are brought in front of the impression point 13 by control means which are operatively connected to the disc-shaped type carrier 5, the type elements being brought to the impression on the recording medium 1 by means of a not shown hammer with the aid of an ink ribbon 15. The ink ribbon 15 is unwound from a supply spool 19 which is interchangeably attached to the carriage 3 arranged cassette 17 is rotatably mounted, and passes through a slot of this cassette 17 to 2 spaced ribbon guide fork 21, 23. These ribbon guide fork 21, 23 guide the ribbon 15 in the area of the impression point parallel to the plane of the recording medium 1. After leaving the Ribbon guide fork 21, 23, the ribbon 15 passes through an entry slot into the ribbon cassette 17 to a take-up reel 25, which winds up the ribbon 15 in a known manner by means not shown. The ribbon guide fork 21, 23 are slidably arranged in guides 27, 29 fixedly connected to the slide 3 in order to lift the ribbon into the printing position according to FIG. 1 by means not shown. After the printing process, the ribbon guide fork 21, 23 are lowered again with the ribbon 15 so that the person operating the machine can see the writing line. The guides 27, 29 for the ribbon fork 21, 23 arranged on both sides of the disc-shaped type carrier have inwardly directed bearing arms 31, 33, between which a thin protective strip 35 below the print line between the disc-shaped type carrier 5 and the part of the ribbon guided parallel to the writing plane 15 is arranged taut. Eccentric bolts 37, 39 are frictionally connected to this protective strip 35 on both sides, their eccentrics 38, 40 in bearing bores 41, 43 of the protective strip 35 and their bolts 45, 47 being displaceable in elongated holes 49, 51 of the bearing arms 31, 33 arranged in the writing direction and by screws 53, 55 are locked. By means of these eccentric bolts 37, 39, the protective strip 35, which is provided on its upper edge 57 with line markings 59 and with a center marking 61, can be aligned precisely with the lines. The line markings 59 and the center marking 61 are formed in one piece with the protective strips 35. The character markings 59 consist of projections 62 on a common one Straight edges 63. In order that the subject of the invention can also be used in machines with a step division switching device, the projections 62 are each spaced by half an inch. This applies in particular to division switching devices with 10 characters or 12 characters per inch.

Der Schutzstreifen 35 weist eine zu seiner Oberkante 57 hin offene, u-förmige Ausnehmung 65 zum Durchtritt der jeweils zum Abdruck zu bewegenden Typenarme 9 des scheibenförmigen Typenträgers 5 auf. Die Mittenmarkierung 61 ist mittig oberhalb der u-förnigen Ausnehmung 65 an einem parallel zu der gemeinsamen Geraden der Vorsprünge 62 verlaufenden Steg angeordnet, welcher über zwei seitliche Richtstege 69, 71 mit der Oberkante 57 des Schutzstreifens 35 fest verbunden ist. Die seitlichen Richtstege 69, 71 haben einen Abstand von einem Zoll plus einer vollen Zeichenbreite und sind so schmal ausgebildet, daß die Richtstege 69, 71 sich immer zwischen zwei benachbarten Buchstaben befinden. Da hierdurch keine Buchstaben überdeckt werden, ist die Lesbarkeit der jeweils gedruckten Zeilen immer gewährleistet. Der obere Steg 67 ist ebenfalls soweit von den Kanten 59 der Vorsprünge 62 entfernt und so schmal ausgebildet, daß seine Breite kleiner als der kleinste Abstand zwischen zwei Zeilen ist. Der Steg 67 liegt beim Schreiben immer in dem freien Zwischenraum zwischen zwei aufeinanderfolgenden Zeilen."The protective strip 35 has a U-shaped recess 65 which is open toward its upper edge 57 and for the passage of the type arms 9 of the disk-shaped type carrier 5 which are to be moved for printing. The center marking 61 is arranged in the center above the u-shaped recess 65 on a web which runs parallel to the common straight line of the projections 62 and which is firmly connected to the upper edge 57 of the protective strip 35 via two lateral alignment webs 69, 71. The lateral straightening webs 69, 71 are spaced apart by an inch plus a full character width and are so narrow that the straightening webs 69, 71 are always between two adjacent letters. Since this does not cover any letters, the legibility of the printed lines is always guaranteed. The upper web 67 is also so far from the edges 59 of the projections 62 and so narrow that its width is smaller than the smallest distance between two lines. The web 67 is always in the free space between two successive lines when writing. "

Der Schutzstreifen 35 weist außerdem unterhalb der unteren Längskante des Farbbandes 15 eine durchgehende Leitkante 73 auf, durch welche die noch nicht in ihre Ausgangsstellung befindlichen radial verlaufenden Typenarme 9 mit an ihren Enden angeordneten Typen 11 aus dem Bereich der 'Farbbandebene drückbar sind. Die Leitkante 73 ist vom Aufzeichnungsträger 1 hin etwas abgebogen und .ragt unter die untere Längskante des Farbbandes 15. Der Schutzstreifen 35 verhindert also ein Verhaken des Farbbandes 15 mit dem umlaufenden scheibenförnigen Typenträger 5 selbst dann, wenn die Typenarne 9 des scheibenförmigen Typenträgers 5 noch nicht in ihre Ausgangsstellung zurückgestellt worden sind.The protective strip 35 also has a continuous leading edge 73 below the lower longitudinal edge of the ink ribbon 15, through which the radially extending type arms 9, which are not yet in their starting position, can be pressed with types 11 arranged at their ends from the region of the ink ribbon plane. The leading edge 73 is bent somewhat from the recording medium 1 and protrudes below the lower longitudinal edge of the ink ribbon 15. The protective strip 35 thus prevents the ink ribbon 15 from becoming caught on the circumferential one disc-shaped type carrier 5 even if the type arenas 9 of the disc-shaped type carrier 5 have not yet been returned to their starting position.

Im Rahmen der Erfindung ist es auch möglich, daß der Schutzstreifen 35 federnd zwischen den Führungsteilen 27, 29 zum Heben und Senken der Farbbandgabeln 21, 23 gespannt angeordnet ist. Zu diesem Zweck weist der Schutzstreifen an beiden Enden je einen Ansatzbolzen 75 auf, der mittels einer Rastausnehnung 77 an einem fedrig ausgebildeten Arm und einer Kante 81 an den Führungen 27 bzw. 29 verrastbar ist, siehe Figur 3. Die beiden Schenkel 83, 8,5 der u-förmigen Ausnehmung 65 sind an der Einlaufseite für die federnden Typenarre 9 des scheibenförmigen Typenträgers 5 abgerundet ausgebildet. Hierdurch wird vermieden, daß bei der unmittelbar nach dem Abdruckvorgang einsetzenden Rückstellbewegung der scheibenförmige Typenträge 5 die noch in der u-förmigen Ausnehmung befindlichen federnden Typ arme 9 nicht an den Schenkeln 83, 85 verhaken. Die Abrundungen an den Schenkeln 83, 85 begünstigen sogar ein schnelles Zurückstellen uer Typenarme 9 des scheibenförmigen Typenträgers 5. (Fig. 3)In the context of the invention, it is also possible for the protective strip 35 to be arranged in a resilient manner between the guide parts 27, 29 for lifting and lowering the ribbon forks 21, 23. For this purpose, the protective strip has a shoulder bolt 75 at both ends, which can be locked by means of a locking recess 77 on a spring-shaped arm and an edge 81 on the guides 27 and 29, see FIG. 3. The two legs 83, 8, 5 of the U-shaped recess 65 are rounded on the inlet side for the resilient type ratchet 9 of the disc-shaped type carrier 5. This prevents the resilient type arms 9, which are still located in the U-shaped recess, from not catching on the legs 83, 85 during the restoring movement of the disc-shaped type supports 5 immediately after the printing process. The roundings on the legs 83, 85 even promote a quick return of your type arms 9 of the disk-shaped type carrier 5 (FIG. 3).

Die zum Justieren mit einem Schlitz versehenen Bolzen 45, 47 der Exzenterbolzen 37, 39 werden gemäß Figur 1 mittels der Muttern 53 55 fixiert. Dieses Fixieren kann auch dadurch erfolgen, daß die Bolzen 45, 47 mit einem Innengewinde 42 versehen sind, in die Sch ben gemäß Figur 2 einschraubbar sind.The bolts 45, 47 of the eccentric bolts 37, 39 provided with a slot for adjustment are fixed according to FIG. 1 by means of the nuts 53 55. This fixing can also be done in that the bolts 45, 47 are provided with an internal thread 42 into which Sch ben can be screwed according to Figure 2.

Claims (14)

1. Schreib- oder ähnliche Büromaschine mit einem scheibenförmigen Typenträger und einer Einrichtung zum Verhindern des Verhakens eines mittels Farbbandgabeln parallel zur Schreibebene geführten und in den Bereich der Abdruckstelle bringbaren Farbbandes mit dem scheibenförmigen Typenträger, dadurch gekennzeichnet, daß ein dünner Schutzstreifen (35) unterhalb der Druckzeile zwischen dem scheibenförmigen Typenträger (5) und dem parallel zur Schreibebene geführten Teil des Farbbandes (15) gespannt angeordnet ist.1. Typewriter or similar office machine with a disk-shaped type carrier and a device for preventing the hooking of a ribbon guided by means of ribbon forks parallel to the writing plane and can be brought into the region of the impression point with the disk-shaped type carrier, characterized in that a thin protective strip (35) below the Print line between the disc-shaped type support (5) and the part of the ribbon (15) guided parallel to the writing plane is arranged stretched. 2. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß der Schutzstreifen (35) federnd zwischen zwei Führungsteilen (27, 29) zum Heben und Senken der Farbbandgabeln (21, 23) gespannt angeordnet ist.2. Machine according to claim 1, characterized in that the protective strip (35) is resiliently arranged between two guide parts (27, 29) for lifting and lowering the ribbon forks (21, 23). 3. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß der Schutzstreifen (35) auf der Aufnahme für den scheibenförmigen Typenträger (5) e'in- und feststellbar angeordnet ist.3. Machine according to claim 1, characterized in that the protective strip (35) is arranged on the receptacle for the disc-shaped type carrier (5) and lockable. 4. Maschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Schutzstreifen (35) unterhalb der unteren Längskante des Farbbandes (15) eine durchgehende Leitkante (73) aufweist, durch welche die noch nicht in ihre Ausgangsstellung befindlichen radial verlaufenden Typenarme (9) mit an ihren Enden angeordneten Typen (11) aus dem Bereich der Farbbandebene drückbar sind.4. Machine according to claim 2 or 3, characterized in that the protective strip (35) below the lower longitudinal edge of the ink ribbon (15) has a continuous leading edge (73) through which the radially extending type arms (9) which are not yet in their starting position. with types (11) arranged at their ends can be pressed from the area of the ribbon level. 5. Maschine nach einem der vorhergehenden Ansprüche mit einer Mittenmarkierung und Zeilenmarkierungen zum genauen Ausrichten des Aufzeichnungsträgers, dadurch gekennzeichnet , daß die Mittenmarkierung (61) und die Zeilenmarkierungen (59) an der Oberkante (57) des Schutzstreifens (35) angeordnet sind.5. Machine according to one of the preceding claims with a center mark and line markings for precise alignment of the record carrier, characterized in that the center mark (61) and the line markings (59) are arranged on the upper edge (57) of the protective strip (35). 6. Maschine nach Anspruch 5, dadurch gekennzeichnet , daß der Schutzstreifen (35) drehbar gelagerte Exzenterbolzen (37, 39) aufweist, die mit ihren Exzentern (38, 40) in Lagerlöchern (41, 43) des Schutzstreifens (35) und mit ihren Bolzen (45, 47) in je einen zugeordneten Langloch (49, 51) der als Aufnahme dienenden Lagerarme (31, 33) der Führungen (27, 29) für die Farbbandgabel (21, 23) verstellbar angeordnet sind.6. Machine according to claim 5, characterized in that the protective strip (35) has rotatably mounted eccentric bolts (37, 39) which with their eccentrics (38, 40) in bearing holes (41, 43) of the protective strip (35) and with their Bolts (45, 47) are each adjustably arranged in an associated elongated hole (49, 51) of the bearing arms (31, 33) of the guides (27, 29) for the ribbon fork (21, 23) serving as receptacles. 7. Maschine nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Zeilenmarkierungen (59), die Mittenmarkierung (61) und der Schutzstreifen (35) einstückig ausgebildet sind.7. Machine according to claim 5 or 6, characterized in that the line markings (59), the center marking (61) and the protective strip (35) are integrally formed. 8. Maschine nach Anspruch 5 oder 7, dadurch gekennzeichnet , daß die Zeichenmarkierungen (59) aus Vorsprüngen (62) mit auf einer gemeinsamen Geraden befindlichen Kanten (59) bestehen.8. Machine according to claim 5 or 7, characterized in that the character markings (59) consist of projections (62) with edges located on a common straight line (59). 9. Maschine nach Anspruch 8 mit einer Schritt-Teilungsumschaltung, dadurch gekennzeichnet , daß die Vorsprünge jeweils einen Abstand von einem 1/2 Zoll aufweisen.9. Machine according to claim 8 with a step division switching, characterized in that the projections are each a distance of 1/2 inch. 10. Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schutzstreifen (35) eine zu seiner Oberkante (57) hin offene, u-förmige Ausnehmung (65) zum Durchtritt der jeweils zum Abdruck zu bewegenden Typenarme (9) aufweist.10. Machine according to one of the preceding claims, characterized in that the protective strip (35) has a U-shaped recess (65) open towards its upper edge (57) for the passage of the type arms (9) to be moved in each case for printing. 11. Maschine nach Anspruch 10, dadurch gekennzeichnet , daß die Mittenmarkierung (61) mittig oberhalb der u-förmigen Ausnehmung (65 ) an einem parallel zu der gemeinsamen Geraden der Vorsprünge (62) verlaufenden Steg (67) angeordnet ist, welcher über zwei seitliche Richtstege (69, 71) mit der Oberkante (57) des Schutzstreifens (35) fest verbunden ist.11. Machine according to claim 10, characterized in that the center marking (61) is arranged centrally above the U-shaped recess (65) on a parallel to the common straight line of the projections (62) web (67) which has two lateral Straightening webs (69, 71) with the upper edge (57) of the protective strip (35) is firmly connected. 12. Maschine nach Anspruch 11, dadurch gekennzeichnet, daß die seitlichen Richtstege (69, 71) einen Abstand von einem Zoll plus einer vollen Zeichenbreite aufweisen.12. Machine according to claim 11, characterized in that the lateral directional webs (69, 71) have a distance of one inch plus a full character width. 13. Maschine nach Anspruch 11, dadurch gekennzeichnet, daß die Breite des Steges (67) kleiner als der kleinste freie Abstand zwischen zwei Zeilen ist.13. Machine according to claim 11, characterized in that the width of the web (67) is smaller than the smallest free distance between two lines. 14. Maschine nach Anspruch 10, dadurch gekennzeichnet, daß die beiden Schenkel (83, 85) der u-förmigen Ausnehmung (65) an der Einlaufseite für die federnden Typenarme (9) abgerundet sind.14. Machine according to claim 10, characterized in that the two legs (83, 85) of the U-shaped recess (65) on the inlet side for the resilient type arms (9) are rounded.
EP19790104281 1978-11-23 1979-11-02 Typewriter or similar business machine with a disc-shaped type carrier Expired EP0011727B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2850711 1978-11-23
DE19782850711 DE2850711C2 (en) 1978-11-23 1978-11-23 Device to prevent the ink ribbon from getting caught

Publications (3)

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EP0011727A2 true EP0011727A2 (en) 1980-06-11
EP0011727A3 EP0011727A3 (en) 1981-01-28
EP0011727B1 EP0011727B1 (en) 1982-09-22

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EP19790104281 Expired EP0011727B1 (en) 1978-11-23 1979-11-02 Typewriter or similar business machine with a disc-shaped type carrier

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EP (1) EP0011727B1 (en)
DE (1) DE2850711C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3502470C1 (en) * 1985-01-25 1986-07-24 Mannesmann AG, 4000 Düsseldorf Device for matrix printers, in particular for serial matrix printers
DE3601484C1 (en) * 1986-01-20 1987-04-23 Triumph Adler Ag Ink and correction tape device for typewriters

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874285A (en) * 1972-04-17 1975-04-01 Suwa Seikosha Kk Printer
DE2616345B2 (en) * 1976-04-14 1978-08-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for guiding a ribbon
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB472065A (en) * 1936-05-09 1937-09-16 Joseph Patrick O Halloran Improvements relating to ink ribbon marks for typewriters and like machines
US3017981A (en) * 1960-12-05 1962-01-23 Douglas L Keith Ribbon shield
SE399668B (en) * 1974-03-07 1978-02-27 Qume Corp CASSETTE FOR SUPPLYING COLOR RIBBONS TO A PRINTING OR PRINTING STATION AT A PRINTING DEVICE
US3964595A (en) * 1975-01-23 1976-06-22 Xerox Corporation Ribbon guide for a serial printer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874285A (en) * 1972-04-17 1975-04-01 Suwa Seikosha Kk Printer
DE2616345B2 (en) * 1976-04-14 1978-08-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for guiding a ribbon
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge

Also Published As

Publication number Publication date
DE2850711C2 (en) 1985-07-04
DE2850711A1 (en) 1980-06-04
EP0011727B1 (en) 1982-09-22
EP0011727A3 (en) 1981-01-28

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