EP0364945B1 - Ink ribbon cartridge and multicolour printer accepting same - Google Patents

Ink ribbon cartridge and multicolour printer accepting same Download PDF

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Publication number
EP0364945B1
EP0364945B1 EP89119248A EP89119248A EP0364945B1 EP 0364945 B1 EP0364945 B1 EP 0364945B1 EP 89119248 A EP89119248 A EP 89119248A EP 89119248 A EP89119248 A EP 89119248A EP 0364945 B1 EP0364945 B1 EP 0364945B1
Authority
EP
European Patent Office
Prior art keywords
ribbon
carriage
ribbon cartridge
ink ribbon
motor
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
EP89119248A
Other languages
German (de)
French (fr)
Other versions
EP0364945A2 (en
EP0364945A3 (en
Inventor
Christian Camier
Francis Manier
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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
Application filed by Honeywell Inc filed Critical Honeywell Inc
Publication of EP0364945A2 publication Critical patent/EP0364945A2/en
Publication of EP0364945A3 publication Critical patent/EP0364945A3/en
Application granted granted Critical
Publication of EP0364945B1 publication Critical patent/EP0364945B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J35/16—Multicolour arrangements

Definitions

  • the present invention relates to an ink ribbon cassette according to the preamble of protection claim 1.
  • Such a ribbon cassette is known from DE-PS 35 38 761.
  • the ribbon has several colors in adjacent tracks, and the ribbon cassette is pivotally mounted and is pivoted by a cam cam.
  • the resulting misalignment of the wide ribbon with respect to the opposite platen is compensated for by a further cam control which acts on the ribbon guide. This leads to considerable mechanical effort.
  • An electromechanical printing unit is known from EP-B 0 059 923, in which an ink ribbon misalignment does not occur.
  • This known electromechanical printing unit comprises a holding device for ink ribbon cassettes, which is displaceably guided in the vertical direction, ie perpendicular to the line to be written. The displacement takes place via an electric motor and cams, one of which moves the holding device and the other via a tension element in the form of a return spring Holding device continuously applied towards the first cam. Due to the possibly quite considerable stroke of the holding device that is to be raised or lowered perpendicularly to the line direction and the interposition of cam disks, the switching speed in this known electromechanical printing unit is limited. Furthermore, each time the ribbon cassette (s) are replaced, the return spring that prestresses the holding device against the cam disk must be removed and attached.
  • the ink ribbon cassette is provided with a drive element, preferably in the form of a toothed rack, which is brought into engagement with a drive device, preferably a stepper motor, via an intermediate gear.
  • a drive device preferably a stepper motor
  • the parallel displacement of a color pad with several tracks and in the form of a drum with respect to a print head is known in principle from DE-OS 29 29 917.
  • the recording medium is guided between the print head and the ink pad, with both the print head and the ink pad being guided and driven separately and not on one common sledge.
  • the present invention aims to use an ink ribbon cassette as a disposable item in the carriage of a printer.
  • a cassette housing 10 has an ink ribbon 12 which, in a manner not shown, has, for example, six adjacent tracks of different colors, which extend perpendicular to the plane of the drawing.
  • the ink ribbon 12 is dispensed on an output arm 14 of the cassette housing 10 and drawn in on a take-up arm 16, the ink ribbon 12 via an internal drive mechanism of known type and is driven via an externally accessible drive shaft end 18.
  • a bore 20 passing through the cassette housing 10 serves for the engagement of a guide pin 22 which is connected to a printer carriage 24.
  • a printhead 26, which is also connected to the printer carriage 24, is arranged in a recess 28 in the cassette housing 10, the recess being formed by the dispensing arm 14 and the receiving arm 16.
  • the print head 26 strikes the ink ribbon 12 against a printing roller, not shown, located underneath, a recording medium, also not shown, being located between the printing roller and the ink ribbon 12.
  • the cassette housing 10 has a toothing 30 which is in engagement with a gear transmission 32, the gear transmission 32 being driven by a motor 34.
  • a stepper motor is preferably used as the motor 34.
  • the cassette housing 10 has an extension 36 with which it engages in a recess 38 on the printer carriage 24, so that the cassette is secured against pivoting movement.
  • the printer carriage 24 is guided along a main guide rod 40.
  • the toothing 30 and the recess 38 extend parallel to the main guide rod 40.
  • the printer carriage 24 is guided on the main guide rod 40 and on an auxiliary guide rod 42, both guide rods 40, 42 being fastened in the side walls of a printer chassis 54.
  • a motor 52 is mounted on a side wall of the printer chassis 54 and drives the printer carriage 24 along the guide rods 40, 42 via a toothed belt 50, the matrix print head 26, via the different colors of the ink ribbon 12, corresponding colored symbols and markings on an underlying one Print medium 56 can apply.
  • An upright side wall 48 which is firmly connected to the printer carriage 24, carries a gear train, not shown, which is driven by a further motor 46 and acts on the drive shaft end 18 in order to transport the ink ribbon 12.
  • a holding arm for the matrix printhead 26 is also connected to the side wall 48.

Description

Die vorliegende Erfindung bezieht sich auf eine Farbbandkassette nach dem Gattungsbegriff des Schutzanspruches 1.The present invention relates to an ink ribbon cassette according to the preamble of protection claim 1.

Eine derartige Farbbandkassette ist aus der DE-PS 35 38 761 bekannt. Dort weist das Farbband mehrere Farben in nebeneinanderliegenden Spuren auf, und die Farbbandkassette ist schwenkbar gelagert und wird durch einen Kurvennocken verschwenkt. Die dabei entstehende Fehlausrichtung des breiten Farbbandes in bezug auf das gegenüberliegende Druckwiderlager wird durch eine weitere Nockensteuerung, die auf die Farbbandführung einwirkt, kompensiert. Dies führt zu einem erheblichen mechanischen Aufwand.Such a ribbon cassette is known from DE-PS 35 38 761. There the ribbon has several colors in adjacent tracks, and the ribbon cassette is pivotally mounted and is pivoted by a cam cam. The resulting misalignment of the wide ribbon with respect to the opposite platen is compensated for by a further cam control which acts on the ribbon guide. This leads to considerable mechanical effort.

Eine ähnliche Einrichtung zeigt die DE-PS 25 15 899, wobei das Farbband nur zwei Farben aufweist und auf eine Kompensation der Farbband-Fehlausrichtung in bezug auf die Schreibwalze verzichtet wird.A similar device is shown in DE-PS 25 15 899, the ribbon having only two colors and a compensation of the ribbon misalignment with respect to the platen roller being dispensed with.

Aus der EP-B 0 059 923 ist ein elektromechanisches Druckwerk bekannt, bei dem eine Farbband-Fehlausrichtung nicht auftritt. Dieses bekannte elektromechanische Druckwerk umfaßt eine Haltevorrichtung für Farbbandkassetten, die in senkrechter Richtung, d.h. senkrecht zu der zu schreibenden Zeile verschiebbar geführt ist. Die Verschiebung erfolgt über einen Elektromotor und Kurvenscheiben, von denen die eine die Haltevorrichtung bewegt und die andere über ein Zugelement in Form einer Rückholfeder die Haltevorrichtung laufend in Richtung zu der ersten Kurvenscheibe beaufschlagt. Aufgrund des u.U. recht beachtlichen Hubes der senkrecht zu der Zeilenrichtung anzuhebenden bzw. abzusenkenden Haltevorrichtung und der Zwischenschaltung von Kurvenscheiben ist die Umschaltgeschwindigkeit bei diesem bekannten elektromechanischen Druckwerk beschränkt. Ferner ist bei jedem Auswechselvorgang der Farbbandkassette (n), die die Haltevorrichtung gegen die Kurvenscheibe vorspannende Rückholfeder aus- und einzuhängen.An electromechanical printing unit is known from EP-B 0 059 923, in which an ink ribbon misalignment does not occur. This known electromechanical printing unit comprises a holding device for ink ribbon cassettes, which is displaceably guided in the vertical direction, ie perpendicular to the line to be written. The displacement takes place via an electric motor and cams, one of which moves the holding device and the other via a tension element in the form of a return spring Holding device continuously applied towards the first cam. Due to the possibly quite considerable stroke of the holding device that is to be raised or lowered perpendicularly to the line direction and the interposition of cam disks, the switching speed in this known electromechanical printing unit is limited. Furthermore, each time the ribbon cassette (s) are replaced, the return spring that prestresses the holding device against the cam disk must be removed and attached.

Ausgehend von dieser bekannten Lösung ist es daher die Aufgabe der vorliegenden Erfindung, einen Mehrfarben-Drucker anzugeben, bei dem die Umschaltung auf verschiedene Farben sehr schnell vorgenommen werden kann und die Auswechslung der Farbbandkassette durch einfaches Aufstecken und Abziehen leicht ausgeführt werden kann.Starting from this known solution, it is therefore the object of the present invention to provide a multicolor printer in which the changeover to different colors can be carried out very quickly and the replacement of the ribbon cassette can be carried out easily by simply plugging in and unplugging.

Die Lösung dieser Aufgabe gelingt gemäß den kennzeichnenden Merkmalen des Patentanspruches 1. Weitere vorteilhafte Ausgestaltungen des Mehrfarben-Druckers gemäß der Erfindung sind den abhängigen Ansprüchen entnehmbar.This object is achieved in accordance with the characterizing features of patent claim 1. Further advantageous configurations of the multicolor printer according to the invention can be found in the dependent claims.

Gemäß der vorliegenden Erfindung ist die Farbbandkassette mit einem Antriebselement vorzugsweise in Form einer Zahnstange versehen, das mit einer Antriebseinrichtung vorzugsweise einem Schrittmotor über ein zwischengeschaltetes Getriebe in Eingriff gebracht wird. Durch eine Lagerung der Kassette in einem Schlitten eines Druckers, die eine Verschiebung der Kassette quer zu einem Druckkopf in der Schreibebene gestattet, kann jede Farbspur des Farbbandes in bezug auf den ortsfest am Schlitten des Druckers angeordneten Druckkopf verschoben werden. Auf diese Weise ist eine Auswahl der zu druckenden Farbe durch Ansteuerung des Schrittmotors in einfacher Weise möglich, ohne daß spezielle Kompensationsanordnungen für eine Farbbandkrümmung erforderlich wären.According to the present invention, the ink ribbon cassette is provided with a drive element, preferably in the form of a toothed rack, which is brought into engagement with a drive device, preferably a stepper motor, via an intermediate gear. By storing the cassette in a carriage of a printer, which allows the cassette to be displaced transversely to a printhead in the writing plane, each color track of the ink ribbon can be displaced with respect to the printhead arranged in a fixed position on the carriage of the printer. In this way, the color to be printed can be selected in a simple manner by controlling the stepping motor, without special compensation arrangements for ribbon curvature being required.

Die Parallelverschiebung eines Farbkissens mit mehreren Spuren und in Form einer Trommel in bezug auf einen Druckkopf ist prinzipiell aus der DE-OS 29 29 917 bekannt. Dort ist das Aufzeichnungsmedium zwischen dem Druckkopf und dem Farbkissen geführt, wobei sowohl der Druckkopf als auch das Farbkissen extra geführt und angetrieben sind und sich nicht auf einem gemeinsamen Schlitten befinden. Die vorliegende Erfindung bezweckt demgegenüber den Einsatz einer Farbbandkassette als Einwegartikel im Schlitten eines Druckers.The parallel displacement of a color pad with several tracks and in the form of a drum with respect to a print head is known in principle from DE-OS 29 29 917. There, the recording medium is guided between the print head and the ink pad, with both the print head and the ink pad being guided and driven separately and not on one common sledge. In contrast, the present invention aims to use an ink ribbon cassette as a disposable item in the carriage of a printer.

Anhand der Figuren der beiliegenden Zeichnung sei im folgenden ein Ausführungsbeispiel der neuerungsgemäßen Farbbandkassette sowie eines sie aufnehmenden Druckerschlittens näher beschrieben. Es zeigen:

Figur 1
eine Seitenansicht der in einen Druckerschlitten eingesetzten Farbbandkassette; und
Figur 2
eine Draufsicht auf die Anordnung gemäß Figur 1.
Figur 3
eine perspektivische Ansicht eines Druckers mit dem Druckerschlitten und der darin eingesetzten Farbbandkassette;
Figur 4
eine perspektivische Ansicht des Druckerschlittens mit Farbbandkassette von hinten; und
Figur 5
eine perspektivische Ansicht des Druckerschlittens mit Farbbandkassette von vorne.
An exemplary embodiment of the ink ribbon cassette according to the invention and of a printer carriage receiving it will be described in more detail below with reference to the figures in the accompanying drawing. Show it:
Figure 1
a side view of the ribbon cartridge used in a printer carriage; and
Figure 2
a plan view of the arrangement of Figure 1.
Figure 3
a perspective view of a printer with the carriage and the ribbon cartridge used therein;
Figure 4
a perspective view of the printer carriage with ribbon cartridge from behind; and
Figure 5
a perspective view of the printer carriage with ribbon cartridge from the front.

Gemäß Figur 1 weist ein Kassettengehäuse 10 ein Farbband 12 auf, das in nicht näher dargestellter Weise, z.B. sechs nebeneinanderliegende Spuren unterschiedlicher Farben aufweist, die sich senkrecht zur Zeichenebene erstrecken. Das Farbband 12 wird an einem Ausgabearm 14 des Kassettengehäuses 10 ausgegeben und an einem Aufnahmearm 16 eingezogen, wobei das Farbband 12 über einen internen Antriebsmechanismus bekannter Art und über einen von außen zugänglichen Antriebs-Wellenstummel 18 angetrieben wird. Eine das Kassettengehäuse 10 durchsetzende Bohrung 20 dient dem Eingriff eines Führungsstiftes 22, der mit einem Druckerschlitten 24 verbunden ist. Ein ebenfalls mit dem Druckerschlitten 24 verbundener Druckkopf 26 ist in einer Ausnehmung 28 des Kassettengehäuses 10 angeordnet, wobei die Ausnehmung durch den Ausgabearm 14 und den Aufnahmearm 16 gebildet wird. Der Druckkopf 26 schlägt das Farbband 12 gegen eine darunter befindliche, nicht dargestellte Druckwalze, wobei sich ein ebenfalls nicht dargestelltes Aufzeichnungsmedium zwischen Druckwalze und Farbband 12 befindet.According to FIG. 1, a cassette housing 10 has an ink ribbon 12 which, in a manner not shown, has, for example, six adjacent tracks of different colors, which extend perpendicular to the plane of the drawing. The ink ribbon 12 is dispensed on an output arm 14 of the cassette housing 10 and drawn in on a take-up arm 16, the ink ribbon 12 via an internal drive mechanism of known type and is driven via an externally accessible drive shaft end 18. A bore 20 passing through the cassette housing 10 serves for the engagement of a guide pin 22 which is connected to a printer carriage 24. A printhead 26, which is also connected to the printer carriage 24, is arranged in a recess 28 in the cassette housing 10, the recess being formed by the dispensing arm 14 and the receiving arm 16. The print head 26 strikes the ink ribbon 12 against a printing roller, not shown, located underneath, a recording medium, also not shown, being located between the printing roller and the ink ribbon 12.

Das Kassettengehäuse 10 weist gemäß Fig. 2 als integralen Bestandteil eine Verzahnung 30 auf, die sich mit einem Zahnradgetriebe 32 in Eingriff befindet, wobei das Zahnradgetriebe 32 von einem Motor 34 angetrieben wird. Als Motor 34 dient vorzugsweise ein Schrittmotor.2, as an integral part, the cassette housing 10 has a toothing 30 which is in engagement with a gear transmission 32, the gear transmission 32 being driven by a motor 34. A stepper motor is preferably used as the motor 34.

Ferner weist das Kassettengehäuse 10 einen Ansatz 36 auf, mit welchem es in eine Ausnehmung 38 am Druckerschlitten 24 eingreift, so daß die Kassette gegen eine Schwenkbewegung gesichert ist. Der Druckerschlitten 24 ist einlang einer Haupt-Führungsstange 40 geführt. Die Verzahnung 30 und die Ausnehmung 38 erstrecken sich parallel zu der Haupt-Führungsstange 40.Furthermore, the cassette housing 10 has an extension 36 with which it engages in a recess 38 on the printer carriage 24, so that the cassette is secured against pivoting movement. The printer carriage 24 is guided along a main guide rod 40. The toothing 30 and the recess 38 extend parallel to the main guide rod 40.

Mit der dargestellten Anordnung kann durch Ansteuerung des Motors 34 über das zwischengeschaltete Zahnradgetriebe 32 und die Verzahnung 30 das Kassettengehäuse 10 in bezug auf den Druckerschlitten 24 und den Druckkopf 26 so verschoben werden, daß eine unterschiedliche Farbspur jeweils unter dem Druckkopf 26 liegt.With the arrangement shown, by driving the motor 34 via the intermediate gear transmission 32 and the teeth 30, the cassette housing 10 with respect to the printer carriage 24 and the print head 26 are displaced so that a different color track lies below the print head 26.

Gemäß der in den Figuren 3 - 5 dargestellten näheren Ausgestaltung ist der Druckerschlitten 24 auf der Haupt-Führungsstange 40 und auf einer Hilfs-Führungsstange 42 geführt, wobei beide Führungsstangen 40, 42 in den Seitenwänden eines Druckerchassis 54 befestigt sind. Ein Motor 52 ist an einer Seitenwand des Druckerchassis 54 gelagert und treibt über einen Zahnriemen 50 den Druckerschlitten 24 entlang der Führungsstangen 40, 42 an, wobei der Matrix-Druckkopf 26 über die verschiedenen Farben des Farbbandes 12 entsprechende farbige Symbole und Markierungen auf einem darunter befindlichen Druckmedium 56 aufbringen kann.According to the more detailed configuration shown in FIGS. 3-5, the printer carriage 24 is guided on the main guide rod 40 and on an auxiliary guide rod 42, both guide rods 40, 42 being fastened in the side walls of a printer chassis 54. A motor 52 is mounted on a side wall of the printer chassis 54 and drives the printer carriage 24 along the guide rods 40, 42 via a toothed belt 50, the matrix print head 26, via the different colors of the ink ribbon 12, corresponding colored symbols and markings on an underlying one Print medium 56 can apply.

Eine mit dem Druckerschlitten 24 fest verbundene aufrechte Seitenwand 48 trägt einen nicht-dargestellten Getriebezug, der von einem weiteren Motor 46 angetrieben ist und auf den Antriebs-Wellenstummel 18 einwirkt, um das Farbband 12 zu transportieren. Mit der Seitenwand 48 ist zugleich ein Haltearm für den Matrix-Druckkopf 26 verbunden.An upright side wall 48, which is firmly connected to the printer carriage 24, carries a gear train, not shown, which is driven by a further motor 46 and acts on the drive shaft end 18 in order to transport the ink ribbon 12. A holding arm for the matrix printhead 26 is also connected to the side wall 48.

Durch Einwirken des Schrittmotors 34 über das Zahnradgetriebe 32 auf die Zahnstange 30 der Farbbandkassette 10, 12 erfolgt eine Verschiebung der Kassette auf dem Führungsstift 22, wobei ein Rückhalteclip 44 den Verschiebeweg begrenzt.By the action of the stepping motor 34 via the gear transmission 32 on the rack 30 of the ribbon cassette 10, 12, the cassette is displaced on the guide pin 22, a retaining clip 44 limiting the displacement.

Claims (5)

  1. Multicolour printer comprising a carriage (24) displaceable in line direction along guiding bars (40,42), whereat a printing head (26) is fixedly connected to the carriage, a ribbon cartridge (10) being displaceable with respect to the printing head and comprising an ink ribbon (12) with a plurality of adjacent colour lanes and with driving means (30) for said ribbon cartridge in order to displace it on a guiding pin (22) of said carriage, characterized in that the cartridge is displaceable along said line direction and is comprising:
    a toothed rack (30) extending in direction of said guiding bars (40,42) and a bore (20) as well as a projection (36), and
    that the carriage (24) comprises:
    a gear unit (32) driven by a motor (34) and engaging said toothed rack (30), and a cut-out (38) extending along the direction of said guiding bars (40,42) and being engaged by said projection (36) in order to secure said ribbon cartridge (10) against tilting when it is displaced with its bore (20) on said guiding pin (22) at the drive of said toothed rack.
  2. Multicolour printer according to claim 1, characterized in that the toothed rack (30) forms an integral part of said ribbon cartidge (10).
  3. Multicolour printer according to claim 1, characterized in that the printing head (26) is arranged within a cut-out (28) of said ribbon cartridge (10) with said cut-out being formed by means of an output and intake arm (14,16).
  4. Multicolour printer according to claim 1, characterized in that the motor (34) is a stepping motor.
  5. Multicolour printer according to claim 4, characterized in that the carriage (24) is supporting a further motor (46) which drives the ink ribbon within said ribbon cartridge (10) via a driving stub shaft (18).
EP89119248A 1988-10-19 1989-10-17 Ink ribbon cartridge and multicolour printer accepting same Expired - Lifetime EP0364945B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8813114U DE8813114U1 (en) 1988-10-19 1988-10-19
DE8813114U 1988-10-19

Publications (3)

Publication Number Publication Date
EP0364945A2 EP0364945A2 (en) 1990-04-25
EP0364945A3 EP0364945A3 (en) 1990-10-24
EP0364945B1 true EP0364945B1 (en) 1993-08-11

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ID=6829013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119248A Expired - Lifetime EP0364945B1 (en) 1988-10-19 1989-10-17 Ink ribbon cartridge and multicolour printer accepting same

Country Status (2)

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EP (1) EP0364945B1 (en)
DE (2) DE8813114U1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3108528C2 (en) * 1981-03-06 1983-09-01 Nixdorf Computer Ag, 4790 Paderborn Device for a mechanical, preferably electromechanical, printing mechanism for setting ink ribbon to different tracks
JPS59164180A (en) * 1983-03-09 1984-09-17 Fujitsu Ltd Ribbon mechanism part of multi-color printer
JPS61189982A (en) * 1985-02-19 1986-08-23 Tokyo Electric Co Ltd Ribbon change-over apparatus of printer
JPS61242870A (en) * 1985-04-22 1986-10-29 Tokyo Electric Co Ltd Printer
DE3607937A1 (en) * 1986-03-11 1987-09-17 Philips Patentverwaltung ARRANGEMENT FOR SWITCHING THE COLOR RANGE OF A MULTICOLOR RIBBON

Also Published As

Publication number Publication date
DE58905250D1 (en) 1993-09-16
DE8813114U1 (en) 1990-02-15
EP0364945A2 (en) 1990-04-25
EP0364945A3 (en) 1990-10-24

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