EP1666260A1 - Thermal printing head with protective element - Google Patents

Thermal printing head with protective element Download PDF

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Publication number
EP1666260A1
EP1666260A1 EP04028640A EP04028640A EP1666260A1 EP 1666260 A1 EP1666260 A1 EP 1666260A1 EP 04028640 A EP04028640 A EP 04028640A EP 04028640 A EP04028640 A EP 04028640A EP 1666260 A1 EP1666260 A1 EP 1666260A1
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EP
European Patent Office
Prior art keywords
print head
thermal print
printing
protective element
printing device
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
EP04028640A
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German (de)
French (fr)
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EP1666260B1 (en
Inventor
Rudolf Lonski
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Skidata AG
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Skidata AG
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Filing date
Publication date
Application filed by Skidata AG filed Critical Skidata AG
Priority to AT04028640T priority Critical patent/ATE510698T1/en
Priority to EP04028640A priority patent/EP1666260B1/en
Priority to ES04028640T priority patent/ES2367002T3/en
Publication of EP1666260A1 publication Critical patent/EP1666260A1/en
Application granted granted Critical
Publication of EP1666260B1 publication Critical patent/EP1666260B1/en
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Anticipated expiration legal-status Critical

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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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

Definitions

  • the invention relates to a printing device with a thermal print head for printing on a medium, wherein the thermal print button is movable between a rest position moved away from a counter-pressure roller and a printing position moved toward the counter-pressure roller for printing on the medium, according to the preamble of claim 1.
  • Such a printing device is known from DE 34 06 470 C1.
  • an embossing film is used as a color transfer material.
  • the thermal print head is pressed against the medium between two transport steps to transfer the ink from the stamping foil to the medium formed by a plastic card.
  • DE 101 16 584 A1 discloses a liftable thermal print head for printing media of different thicknesses.
  • a thermal printhead has one or more lines of high sensitivity heating elements. These can be damaged mechanically if a hard medium, for example a plastic card, hits the print line with its leading edge during transport. In addition, a medium, such as a ticket that gets stuck on the print line, is not transported further, so that in the printing device, a ticket jam may occur. Also, dust on the tickets leads to pollution of the print line. Furthermore, the print line can be used eg for maintenance work, such as cleaning the back pressure or other transport rollers or the tread, be damaged.
  • Printing devices with a thermal print head are also used in combined ticket encoding and reading devices, in which tickets can be printed with the printing device, but other tickets, such as barcode tickets, read only or, for example, tickets encoded with magnetic stripes or chips can be.
  • tickets can be printed with the printing device, but other tickets, such as barcode tickets, read only or, for example, tickets encoded with magnetic stripes or chips can be.
  • the print line of the thermal print head is particularly vulnerable.
  • the object of the invention is to ensure a proper onward transport of the medium in a printing device with a thermal print head and to prevent damage to the thermal print head.
  • the thermal print head of the printing device according to the invention may be formed as a pressure bar, at the edge facing the platen roller at least one print line is arranged, which consists of individually controllable heating elements.
  • the thermal print head For printing on the medium, for example a ticket, according to the invention the thermal print head is moved in the direction of the counterpressure roller so that the heating elements are in contact with the medium at the required pressure.
  • the thermal print head Before and after printing, the thermal print head is in the rest position, ie, generally above the platen roller arranged thermal print head is raised relative to its lowered printing position, that is arranged at a distance from the ticket that passes the counter-pressure roller, which also generally forms a transport roller.
  • the operation of the thermal print head for movement between the rest and the printing position is effected by an actuator.
  • a protective element which is movable between a protective position in which it separates the thermal printhead moved to the rest position from the medium and a release position in which it releases the thermal printhead for movement into the printing position.
  • the movement of the protective element is also effected by an actuator.
  • the actuator for moving the protective element is controlled so that the protective element is automatically moved from its protective position to the release position when the thermal print head is lowered, i. is brought into its printing position.
  • one and the same actuator is preferably provided both for movement of the thermal print head and for movement of the protective element.
  • the actuator may e.g. be an electromagnet or an electric motor, which preferably sets a shaft in rotary motion, which drives the thermal print head and the protective element via a transmission.
  • the transmission for moving the thermal print head or the protective element may be, for example, a crank mechanism.
  • a control disk is provided for controlling the movement of the thermal print head or the protective element on the shaft, which acts, for example, on a lever which actuates the thermal print head or the protective element.
  • the protective element of the thermal print head is protected from contamination, also from damage, for example, during cleaning or when a hard medium, such as a plastic card, with its front edge abuts against the heating elements of the thermal print head.
  • the protective element for example, with an inclined surface through which a ticket is pressed down during transport, it can also be prevented that a ticket gets caught on the protective element and thus leads to a ticket jam.
  • the ticket guide according to the prior art usually two rails are used with U-shaped profile, which receive one or the other longitudinal edge of the ticket, the ticket is preferably in a gap between a ticket surface on the thermal print head side, so in the printing device according to the invention Thermoyakkopf arranged on top of the counter-pressure roller, and a ticket run on the bottom of the ticket.
  • the ticket running surfaces are preferably formed by plates. This type of ticket management has several advantages, such as that a ticket, e.g. at one corner has a kink, does not get stuck.
  • the protective element is designed as a rake. Furthermore, extending from the thermal print head in the transport direction of the ticket, a plate as a ticket running surface, which is provided at its edge, which faces the thermal print head, with gaps through which the tines of the rake are moved to the protective position.
  • the upper card running surface in the transport direction in front of the thermal print head having a plate which their edge facing the thermal print head is provided with gaps into which the tines of the rake engage in the protective position.
  • the ticket is protected against improper transport and a consistently closed transport channel, which leads the ticket top and bottom over the entire area, ensured when the protective element or the rake is in its protective position.
  • the protective element or the rake are preferably formed by a plastic part.
  • the smooth protective element or the smooth rake thus facilitate the transport of tickets.
  • alphanumeric data, symbols, barcodes and the like can be printed on the medium.
  • the printing device according to the invention is particularly suitable for combined ticket encoding and reading devices in which the printing device tickets are printed, but other tickets, such as barcode tickets, read only or e. Tickets can also be encoded with magnetic stripes or chips.
  • the combined reading and coding device has a base 1, on the upper side of which a barcode reading device 2, not shown, and a printing device 3, of which only the thermal printing head 4 is shown in FIG. 1, each about a transverse axis 5 or 6 are hinged freely and can be fixed to the base 1 with a fixing device, not shown.
  • the base 1 has on its upper side a plate 7 as a ticket running surface with transverse slots, which are penetrated by transport rollers 8 and 9, wherein the thermal print head 4 opposite transport roller forms the platen roller 9 when printing the ticket 11, for example in the direction of arrow 12 through the reading and encoding device is moved or in the opposite direction 12 '.
  • the distance of the rollers 8, 9 from each other is less than the length of the ticket 11.
  • the bar code reading device 2 and the printing device 3 have at their Bottom plates 13 and 14 as a ticket running surface. The ticket 11 is thus performed in the gap 15 between the tread, so the plates 13 and 14 on the upper, the thermal print head 4 facing side and the plate 7 as a lower card running surface.
  • the thermal print head 4 designed as a pressure bar has a print line 16 at its lower edge made up of individually controllable heating elements (not shown).
  • the thermal print head 4 is, as not shown in detail in the drawing, in the printing device 3 according to the double arrow 17 moved up and out ( Figure 1). In this case, the thermal print head 4 assumes its rest position in FIG. 2, in which it is moved upwards, ie away from the counterpressure roller 9, while in FIG. 3 it is moved downwards into its printing position, which is shown in FIG.
  • the movement of the thermal print head 4 is effected by an actuator which, according to FIGS. 2 and 3, has a shaft 19 rotatable in the direction of rotation 18 by an electric motor, not shown.
  • a cam plate with a helical control surface 21 for up and down movement of the thermal print head 4 according to the arrow 17 is arranged.
  • On the control disk 21 engages, as shown schematically in Figures 2 and 3, an actuator 20, which is resiliently connected to a lever 22 which is rotatably articulated with its one end 23 to the print head holder of the printing device 3, not shown, and with his other end 24 on the up and down movably guided thermal print head. 4
  • the lever 22 is spring-loaded on the control disk 21.
  • the thermal print head 4 thus assumes its upper rest position, according to Figure 3, it is moved downward in the printing position.
  • the printing device 3 further comprises a protective element 26 which engages between a protective position according to Figures 2, 4 and 5, in which it reaches under the up to its rest position moving thermal print head 4 and thus the thermal print head 4 of the run in the gap 15 ticket 11th and a release position according to Figure 3 and 6, in which it releases the thermal printhead 4 to move to its lower printing position, is moved.
  • a further control disk 27 is arranged on the shaft 19 axially offset from the control disk 21, which has a recess 28 which, according to Figure 2 and 3 covered by the control disk 21 in part and therefore partially shown in dashed lines.
  • a lever 29 is rotatably articulated at 30.
  • the axis of rotation of the lever 29 and the two axes of rotation of the lever 22 extend transversely to the transport direction 12, 12 ', ie parallel to the pivot axes 5, 6 of the bar code reading device 2 or printing device 3.
  • the lever 29 has two lever arms 31, 32.
  • the lever arm 31 engages with its one, hook-shaped end on the control disk 27 and is spring-loaded on the control disk 27, for example by a compression spring 34.
  • the protective element 26 is attached at the lower end of the other lever arm 32.
  • the protective element 26 may for this purpose be formed integrally with the lever 29, thus forming with it, for example, a plastic molded part.
  • the protective element 26 is designed as a rake. Furthermore, the plate 14 on the underside of the printing device 3 at its the thermal print head 4 facing edge gaps 35. The tines 36 of the protective element 26 constructed as a rake dip into the gaps 35 when the protective element 26 is in the release position, in which the thermal printing head 4 is lowered into the printing position (FIG. 6).
  • the prongs 36 are pivoted forward of the gaps 35 in the plate 14 in the protection position (FIG. 5), whereby the thermal printhead 4 raised to the rest position is protected from contact with the ticket 11 by the prongs 36.
  • the plate 13 on the barcode reading device 2 also has gaps 37 on its edge (38) facing the thermal print head 4, into which the prongs 36 engage in the protective position according to FIG.

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Abstract

The machine has a thermal printing head, which moves between a neutral position, at which the head moves away from a counter pressure roller, and a printing position, at which the head moves towards the roller. A print medium moves via a gap between the head and the roller. An electric motor moves the head protection unit (26) between protection and unblocking positions when the head is in neutral and printing positions, respectively. An independent claim is also included for an application of a printing machine in a ticket-coding device.

Description

Die Erfindung bezieht sich auf eine Druckvorrichtung mit einem Thermodruckkopf zum Bedrucken eines Mediums, wobei der Thermodruckknopf zwischen einer von einer Gegendruckwalze wegbewegten Ruheposition und einer zu der Gegendruckwalze hinbewegten Druckposition zum Bedrucken des Mediums bewegbar ist, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a printing device with a thermal print head for printing on a medium, wherein the thermal print button is movable between a rest position moved away from a counter-pressure roller and a printing position moved toward the counter-pressure roller for printing on the medium, according to the preamble of claim 1.

Eine derartige Druckvorrichtung ist aus DE 34 06 470 C1 bekannt. Dabei wird eine Prägefolie als Farbübertragungsmaterial verwendet. Der Thermodruckkopf wird zwischen zwei Transportschritten gegen das Medium gedrückt, um die Farbe von der Prägefolie auf das Medium zu übertragen, das durch eine Plastikkarte gebildet wird. Ferner ist aus DE 101 16 584 A1 ein anhebbarer Thermodruckkopf zum Bedrucken unterschiedlich dicker Medien bekannt.Such a printing device is known from DE 34 06 470 C1. In this case, an embossing film is used as a color transfer material. The thermal print head is pressed against the medium between two transport steps to transfer the ink from the stamping foil to the medium formed by a plastic card. Furthermore, DE 101 16 584 A1 discloses a liftable thermal print head for printing media of different thicknesses.

Ein Thermodruckkopf weist eine oder mehrere Druckzeilen aus hochempfindlichen Heizelementen auf. Diese können mechanisch beschädigt werden, wenn ein hartes Medium, beispielsweise eine Plastikkarte beim Transport mit ihrer vorderen Kante gegen die Druckzeile stößt. Zudem wird ein Medium, wie ein Ticket, das an der Druckzeile hängen bleibt, nicht weitertransportiert, so dass in der Druckvorrichtung ein Ticketstau auftreten kann. Auch führt Staub auf den Tickets zur Verschmutzung der Druckzeile. Weiters kann die Druckzeile z.B. bei Wartungsarbeiten, wie bei der Reinigung der Gegendruck- oder sonstiger Transportwalzen oder der Lauffläche, beschädigt werden.A thermal printhead has one or more lines of high sensitivity heating elements. These can be damaged mechanically if a hard medium, for example a plastic card, hits the print line with its leading edge during transport. In addition, a medium, such as a ticket that gets stuck on the print line, is not transported further, so that in the printing device, a ticket jam may occur. Also, dust on the tickets leads to pollution of the print line. Furthermore, the print line can be used eg for maintenance work, such as cleaning the back pressure or other transport rollers or the tread, be damaged.

Druckvorrichtungen mit einem Thermodruckkopf kommen ferner in kombinierten Ticket-Codier- und -Lesegeräten zur Anwendung, in denen mit der Druckvorrichtung zwar auch Tickets bedruckt werden können, jedoch andere Tickets, wie Barcode-Tickets, nur gelesen oder beispielsweise auch Tickets mit Magnetstreifen oder Chips codiert werden können. Bei einem solchen kombinierten Gerät, in das z.B. auch Kreditkarten eingeführt werden, ist die Druckzeile des Thermodruckkopfes besonders gefährdet.Printing devices with a thermal print head are also used in combined ticket encoding and reading devices, in which tickets can be printed with the printing device, but other tickets, such as barcode tickets, read only or, for example, tickets encoded with magnetic stripes or chips can be. In such a combined device incorporating e.g. Even credit cards are introduced, the print line of the thermal print head is particularly vulnerable.

Aufgabe der Erfindung ist es, in einer Druckvorrichtung mit einem Thermodruckkopf einen einwandfreien Weitertransport des Mediums sicherzustellen und eine Beschädigung des Thermodruckkopfes zu verhindern.The object of the invention is to ensure a proper onward transport of the medium in a printing device with a thermal print head and to prevent damage to the thermal print head.

Dies wird erfindungsgemäß mit der im Anspruch 1 gekennzeichneten Druckvorrichtung erreicht. In den Ansprüchen 2 bis 9 sind bevorzugte Ausgestaltungen der erfindungsgemäßen Druckvorrichtung wiedergegeben.This is achieved according to the invention with the printing device characterized in claim 1. In claims 2 to 9 preferred embodiments of the printing device according to the invention are shown.

Der Thermodruckkopf der erfindungsgemäßen Druckvorrichtung kann als Druckleiste ausgebildet sein, an deren der Gegendruckwalze zugewandter Kante wenigstens eine Druckzeile angeordnet ist, die aus einzeln ansteuerbaren Heizelementen besteht.The thermal print head of the printing device according to the invention may be formed as a pressure bar, at the edge facing the platen roller at least one print line is arranged, which consists of individually controllable heating elements.

Zum Bedrucken des Mediums, z.B. eines Tickets, wird erfindungsgemäß der Thermodruckkopf in Richtung der Gegendruckwalze bewegt, so dass die Heizelemente mit dem erforderlichen Druck mit dem Medium in Berührung stehen. Vor und nach dem Druckvorgang befindet sich der Thermodruckkopf in der Ruheposition, d.h. der im Allgemeinen oberhalb der Gegendruckwalze angeordnete Thermodruckkopf wird gegenüber seiner abgesenkten Druckposition angehoben, also im Abstand von dem Ticket angeordnet, das die Gegendruckwalze passiert, die im Allgemeinen ebenfalls eine Transportwalze bildet. Die Betätigung des Thermodruckkopfes zur Bewegung zwischen der Ruhe- und der Druckposition erfolgt durch einen Aktuator.For printing on the medium, for example a ticket, according to the invention the thermal print head is moved in the direction of the counterpressure roller so that the heating elements are in contact with the medium at the required pressure. Before and after printing, the thermal print head is in the rest position, ie, generally above the platen roller arranged thermal print head is raised relative to its lowered printing position, that is arranged at a distance from the ticket that passes the counter-pressure roller, which also generally forms a transport roller. The operation of the thermal print head for movement between the rest and the printing position is effected by an actuator.

Erfindungsgemäß ist ein Schutzelement vorgesehen, das zwischen einer Schutzposition, in der es den in die Ruheposition bewegten Thermodruckkopf von dem Medium trennt, und einer Freigabeposition, in der es den Thermodruckkopf zur Bewegung in die Druckposition freigibt, bewegbar ist.According to the invention, a protective element is provided which is movable between a protective position in which it separates the thermal printhead moved to the rest position from the medium and a release position in which it releases the thermal printhead for movement into the printing position.

Die Bewegung des Schutzelementes erfolgt ebenfalls durch einen Aktuator. Der Aktuator zur Bewegung des Schutzelementes wird so gesteuert, dass das Schutzelement automatisch von seiner Schutzposition in die Freigabeposition bewegt wird, wenn der Thermodruckkopf abgesenkt, d.h. in seine Druckposition gebracht wird.The movement of the protective element is also effected by an actuator. The actuator for moving the protective element is controlled so that the protective element is automatically moved from its protective position to the release position when the thermal print head is lowered, i. is brought into its printing position.

Dabei ist vorzugsweise ein und derselbe Aktuator sowohl zur Bewegung des Thermodruckkopfes wie zur Bewegung des Schutzelementes vorgesehen. Der Aktuator kann z.B. ein Elektromagnet oder ein Elektromotor sein, der vorzugsweise eine Welle in Drehbewegung versetzt, die den Thermodruckkopf und das Schutzelement über ein Getriebe antreibt.In this case, one and the same actuator is preferably provided both for movement of the thermal print head and for movement of the protective element. The actuator may e.g. be an electromagnet or an electric motor, which preferably sets a shaft in rotary motion, which drives the thermal print head and the protective element via a transmission.

Das Getriebe zur Bewegung des Thermodruckkopfes bzw. des Schutzelementes kann beispielsweise ein Kurbelgetriebe sein. Vorzugsweise ist jedoch zur Steuerung der Bewegung des Thermodruckkopfes bzw. des Schutzelementes auf der Welle je eine Steuerscheibe vorgesehen, an der beispielsweise ein Hebel angreift, der den Thermodruckkopf bzw. das Schutzelement betätigt.The transmission for moving the thermal print head or the protective element may be, for example, a crank mechanism. Preferably, however, a control disk is provided for controlling the movement of the thermal print head or the protective element on the shaft, which acts, for example, on a lever which actuates the thermal print head or the protective element.

Durch das Schutzelement wird der Thermodruckkopf vor Verschmutzung geschützt, ferner vor Beschädigung beispielsweise bei Reinigungsarbeiten oder wenn ein hartes Medium, wie eine Plastikkarte, mit ihrer vorderen Kante gegen die Heizelemente des Thermodruckkopfes stößt. Durch entsprechende Ausbildung des Schutzelementes beispielsweise mit einer Schrägfläche, durch die ein Ticket beim Transport nach unten gedrückt wird, kann zudem verhindert werden, dass ein Ticket an dem Schutzelement hängen bleibt und damit zu einem Ticketstau führt.By the protective element of the thermal print head is protected from contamination, also from damage, for example, during cleaning or when a hard medium, such as a plastic card, with its front edge abuts against the heating elements of the thermal print head. By appropriate design of the protective element, for example, with an inclined surface through which a ticket is pressed down during transport, it can also be prevented that a ticket gets caught on the protective element and thus leads to a ticket jam.

Während zur Ticketführung nach dem Stand der Technik meist zwei Schienen mit U-förmigem Profil verwendet werden, die die eine bzw. andere Längskante des Tickets aufnehmen, wird bei der erfindungsgemäßen Druckvorrichtung das Ticket vorzugsweise in einem Spalt zwischen einer Ticketlauffläche auf der Thermodruckkopfseite, also bei oberhalb der Gegendruckwalze angeordnetem Thermodruckkopf auf der Oberseite, und einer Ticketlauffläche auf der Unterseite des Tickets geführt. Die Ticketlaufflächen werden dabei vorzugsweise durch Platten gebildet. Diese Art der Ticketführung hat mehrere Vorteile, beispielsweise den, dass ein Ticket, das z.B. an einer Ecke einen Knick hat, nicht stecken bleibt.While the ticket guide according to the prior art usually two rails are used with U-shaped profile, which receive one or the other longitudinal edge of the ticket, the ticket is preferably in a gap between a ticket surface on the thermal print head side, so in the printing device according to the invention Thermodruckkopf arranged on top of the counter-pressure roller, and a ticket run on the bottom of the ticket. The ticket running surfaces are preferably formed by plates. This type of ticket management has several advantages, such as that a ticket, e.g. at one corner has a kink, does not get stuck.

Um bei einer Druckvorrichtung mit einer solchen Ticketführung mit je einer Ticketlauffläche an der Ober- und der Unterseite des Tickets zu verhindern, dass ein Ticket an dem Schutzelement hängen bleibt, ist erfindungsgemäß das Schutzelement als Rechen ausgebildet. Weiters erstreckt sich von dem Thermodruckkopf in Transportrichtung des Tickets eine Platte als Ticketlauffläche, die an ihrer Kante, die dem Thermodruckkopf zugewandt ist, mit Lücken versehen ist, durch die die Zinken des Rechens in die Schutzposition bewegt werden.In order to prevent a ticket from sticking to the protective element in the case of a printing apparatus with such a ticket guide, each with a ticket running surface on the top and bottom of the ticket, the protective element is designed as a rake. Furthermore, extending from the thermal print head in the transport direction of the ticket, a plate as a ticket running surface, which is provided at its edge, which faces the thermal print head, with gaps through which the tines of the rake are moved to the protective position.

Weiterhin kann die obere Kartenlauffläche in Transportrichtung vor dem Thermodruckkopf eine Platte aufweisen, die an ihrer dem Thermodruckkopf zugewandten Kante mit Lücken versehen ist, in die die Zinken des Rechens in der Schutzposition eingreifen.Furthermore, the upper card running surface in the transport direction in front of the thermal print head having a plate which their edge facing the thermal print head is provided with gaps into which the tines of the rake engage in the protective position.

Damit wird das Ticket vor fehlerhaftem Transport geschützt und ein durchgängig geschlossener Transportkanal, der das Ticket oben und unten vollflächig führt, sichergestellt, wenn sich das Schutzelement bzw. der Rechen in seiner Schutzposition befindet.Thus, the ticket is protected against improper transport and a consistently closed transport channel, which leads the ticket top and bottom over the entire area, ensured when the protective element or the rake is in its protective position.

Das Schutzelement bzw. der Rechen werden vorzugsweise durch ein Kunststoffteil gebildet. Das glatte Schutzelement bzw. der glatte Rechen erleichtern damit auch den Transport der Tickets.The protective element or the rake are preferably formed by a plastic part. The smooth protective element or the smooth rake thus facilitate the transport of tickets.

Mit der erfindungsgemäßen Druckvorrichtung können alphanumerische Daten, Symbole, Barcodes und dergleichen auf das Medium gedruckt werden. Die erfindungsgemäße Druckvorrichtung ist insbesondere für kombinierte Ticket-Codier- und -Lesegeräte geeignet, in denen mit der Druckvorrichtung Tickets bedruckt werden, jedoch andere Tickets, wie Barcode-Tickets, nur gelesen oder z.B. auch Tickets mit Magnetstreifen oder Chips codiert werden.With the printing device according to the invention, alphanumeric data, symbols, barcodes and the like can be printed on the medium. The printing device according to the invention is particularly suitable for combined ticket encoding and reading devices in which the printing device tickets are printed, but other tickets, such as barcode tickets, read only or e. Tickets can also be encoded with magnetic stripes or chips.

Nachstehend ist die Erfindung anhand der beigefügten Zeichnung beispielhaft näher erläutert. Darin zeigen jeweils schematisch:

Figur 1
einen Längsschnitt durch ein Lese- und Codiergerät mit einer Barcode-Lesevorrichtung und einer Druckvorrichtung;
Figur 2
eine perspektivische Ansicht des Thermodruckkopfes und des Schutzelementes in der Ruheposition des Thermodruckkopfes bzw. des Schutzelementes;
Figur 3
eine perspektivische Ansicht des Thermodruckkopfes und des Schutzelementes bei Bewegung des Thermodruckkopfes in die Druckposition und des Schutzelementes in der Freigabeposition;
Figur 4
eine perspektivische Ansicht auf den Thermodruckkopf in der Ruheposition und des Schutzelementes in der Schutzposition von unten;
Figur 5
eine Draufsicht auf das Schutzelement nach Figur 4 von unten, wobei der Thermodruckkopf weggelassen ist; und
Figur 6
eine Draufsicht auf den Thermodruckkopf bei Bewegung in die Druckposition und das Schutzelement in der Freigabeposition von unten.
The invention is explained in more detail by way of example with reference to the accompanying drawing. In each case schematically show:
FIG. 1
a longitudinal section through a reading and encoding device with a bar code reading device and a printing device;
FIG. 2
a perspective view of the thermal print head and the protective element in the rest position of the thermal print head or the protective element;
FIG. 3
a perspective view of the thermal print head and the protective element upon movement of the thermal print head in the printing position and the protective element in the release position;
FIG. 4
a perspective view of the thermal print head in the rest position and the protective element in the protective position from below;
FIG. 5
a top view of the protective element of Figure 4 from below, wherein the thermal print head is omitted; and
FIG. 6
a plan view of the thermal print head when moving in the printing position and the protective element in the release position from below.

Gemäß Figur 1 weist das kombinierte Lese- und Codiergerät eine Basis 1 auf, an deren Oberseite eine nicht näher dargestellte Barcode-Lesevorrichtung 2 und eine Druckvorrichtung 3, von der in Figur 1 nur der Thermodruckkopf 4 dargestellt ist, jeweils um eine querverlaufende Achse 5 bzw. 6 verschenkbar angelenkt und mit einer nicht dargestellten Fixiereinrichtung an der Basis 1 fixierbar sind.According to FIG. 1, the combined reading and coding device has a base 1, on the upper side of which a barcode reading device 2, not shown, and a printing device 3, of which only the thermal printing head 4 is shown in FIG. 1, each about a transverse axis 5 or 6 are hinged freely and can be fixed to the base 1 with a fixing device, not shown.

Die Basis 1 weist an ihrer Oberseite eine Platte 7 als Ticketlauffläche mit Querschlitzen auf, die von Transportwalzen 8 und 9 durchsetzt werden, wobei die dem Thermodruckkopf 4 gegenüberliegende Transportwalze die Gegendruckwalze 9 beim Bedrucken des Tickets 11 bildet, das z.B. in Richtung des Pfeils 12 durch das Lese- und Codiergerät bewegt wird oder in der Gegenrichtung 12'. Der Abstand der Walzen 8, 9 voneinander ist geringer als die Länge des Tickets 11. Die Barcode-Lesevorrichtung 2 und die Druckvorrichtung 3 weisen an ihrer Unterseite Platten 13 bzw. 14 als Ticketlauffläche auf. Das Ticket 11 wird damit in den Spalt 15 zwischen der Lauffläche, also den Platten 13 und 14 auf der oberen, dem Thermodruckkopf 4 zugewandten Seite und der Platte 7 als untere Kartenlauffläche geführt.The base 1 has on its upper side a plate 7 as a ticket running surface with transverse slots, which are penetrated by transport rollers 8 and 9, wherein the thermal print head 4 opposite transport roller forms the platen roller 9 when printing the ticket 11, for example in the direction of arrow 12 through the reading and encoding device is moved or in the opposite direction 12 '. The distance of the rollers 8, 9 from each other is less than the length of the ticket 11. The bar code reading device 2 and the printing device 3 have at their Bottom plates 13 and 14 as a ticket running surface. The ticket 11 is thus performed in the gap 15 between the tread, so the plates 13 and 14 on the upper, the thermal print head 4 facing side and the plate 7 as a lower card running surface.

Gemäß Figur 2, 3, 4 und 6 weist der als Druckleiste ausgebildete Thermodruckkopf 4 an seiner unteren Kante eine Druckzeile 16 aus nicht näher dargestellten, einzeln ansteuerbaren Heizelementen auf. Der Thermodruckkopf 4 ist, wie in der Zeichnung nicht näher dargestellt, in der Druckvorrichtung 3 entsprechend dem Doppelpfeil 17 auf- und abbewegbar geführt (Figur 1). Dabei nimmt der Thermodruckkopf 4 in Figur 2 seine Ruheposition ein, in der er nach oben, also von der Gegendruckwalze 9 wegbewegt ist, während er in Figur 3 nach unten in seine Druckposition bewegt wird, die in Figur 6 dargestellt ist.According to FIGS. 2, 3, 4 and 6, the thermal print head 4 designed as a pressure bar has a print line 16 at its lower edge made up of individually controllable heating elements (not shown). The thermal print head 4 is, as not shown in detail in the drawing, in the printing device 3 according to the double arrow 17 moved up and out (Figure 1). In this case, the thermal print head 4 assumes its rest position in FIG. 2, in which it is moved upwards, ie away from the counterpressure roller 9, while in FIG. 3 it is moved downwards into its printing position, which is shown in FIG.

Die Bewegung des Thermodruckkopfes 4 erfolgt durch einen Aktuator, der gemäß Figur 2 und 3 eine von einem nicht dargestellten Elektromotor in Drehrichtung 18 drehbare Welle 19 aufweist. Auf der Welle 19 ist eine Nockenscheibe mit einer schneckenförmigen Steuerfläche 21 zur Auf- und Abbewegung des Thermodruckkopfes 4 gemäß dem Pfeil 17 angeordnet. An der Steuerscheibe 21 greift, wie in Figur 2 und 3 schematisch dargestellt, ein Betätiger 20 an, welcher mit einem Hebel 22 federnd verbunden ist, der mit seinem einen Ende 23 an der nicht näher dargestellten Druckkopfhalterung der Druckvorrichtung 3 drehbar angelenkt ist und mit seinem anderen Ende 24 an dem auf- und abbewegbar geführten Thermodruckkopf 4.The movement of the thermal print head 4 is effected by an actuator which, according to FIGS. 2 and 3, has a shaft 19 rotatable in the direction of rotation 18 by an electric motor, not shown. On the shaft 19, a cam plate with a helical control surface 21 for up and down movement of the thermal print head 4 according to the arrow 17 is arranged. On the control disk 21 engages, as shown schematically in Figures 2 and 3, an actuator 20, which is resiliently connected to a lever 22 which is rotatably articulated with its one end 23 to the print head holder of the printing device 3, not shown, and with his other end 24 on the up and down movably guided thermal print head. 4

Der Hebel 22 ist auf die Steuerscheibe 21 zu federbelastet. In Figur 2 nimmt der Thermodruckkopf 4 damit seine obere Ruheposition ein, gemäß Figur 3 wird er nach unten in die Druckposition bewegt.The lever 22 is spring-loaded on the control disk 21. In Figure 2, the thermal print head 4 thus assumes its upper rest position, according to Figure 3, it is moved downward in the printing position.

Die Druckvorrichtung 3 weist ferner ein Schutzelement 26 auf, das zwischen einer Schutzposition gemäß Figur 2, 4 und 5, in der es unter den in seine Ruheposition nach oben bewegten Thermodruckkopf 4 greift und damit den Thermodruckkopf 4 von dem in dem Spalt 15 geführten Ticket 11 trennt, und einer Freigabeposition gemäß Figur 3 und 6, in der es den Thermodruckkopf 4 zur Bewegung in seine untere Druckposition freigibt, bewegt wird.The printing device 3 further comprises a protective element 26 which engages between a protective position according to Figures 2, 4 and 5, in which it reaches under the up to its rest position moving thermal print head 4 and thus the thermal print head 4 of the run in the gap 15 ticket 11th and a release position according to Figure 3 and 6, in which it releases the thermal printhead 4 to move to its lower printing position, is moved.

Die Bewegung des Schutzelementes 26 erfolgt ebenfalls mit dem Elektromotor, der die Welle 19 antreibt. Dazu ist auf der Welle 19 axial versetzt zur Steuerscheibe 21 eine weitere Steuerscheibe 27 angeordnet, die eine Ausnehmung 28 aufweist, welche gemäß Figur 2 und 3 durch die Steuerscheibe 21 zum Teil verdeckt und deshalb teilweise gestrichelt dargestellt wird.The movement of the protective element 26 also takes place with the electric motor which drives the shaft 19. For this purpose, a further control disk 27 is arranged on the shaft 19 axially offset from the control disk 21, which has a recess 28 which, according to Figure 2 and 3 covered by the control disk 21 in part and therefore partially shown in dashed lines.

An der nicht dargestellten Druckkopfhalterung der Druckvorrichtung 3 ist bei 30 ein Hebel 29 drehbar angelenkt. Die Drehachse des Hebels 29 und die beiden Drehachsen des Hebels 22 verlaufen quer zur Transportrichtung 12, 12', also parallel zu den Schwenkachsen 5, 6 der Barcode-Leseeinrichtung 2 bzw. Druckvorrichtung 3.At the printhead support, not shown, of the printing device 3, a lever 29 is rotatably articulated at 30. The axis of rotation of the lever 29 and the two axes of rotation of the lever 22 extend transversely to the transport direction 12, 12 ', ie parallel to the pivot axes 5, 6 of the bar code reading device 2 or printing device 3.

Der Hebel 29 weist zwei Hebelarme 31, 32 auf. Der Hebelarm 31 greift mit seinem einen, hakenförmigen Ende an der Steuerscheibe 27 an und ist dazu auf die Steuerscheibe 27 federbelastet, z.B. durch eine Druckfeder 34. An dem unteren Ende des anderen Hebelarmes 32 ist das Schutzelement 26 befestigt. Das Schutzelement 26 kann dazu einstückig mit dem Hebel 29 ausgebildet sein, also mit ihm z.B. ein Kunststoffformteil bilden.The lever 29 has two lever arms 31, 32. The lever arm 31 engages with its one, hook-shaped end on the control disk 27 and is spring-loaded on the control disk 27, for example by a compression spring 34. At the lower end of the other lever arm 32, the protective element 26 is attached. The protective element 26 may for this purpose be formed integrally with the lever 29, thus forming with it, for example, a plastic molded part.

Es ist ersichtlich, dass, wenn das hakenförmige Ende des Hebelarms 31 in die Ausnehmung 28 der Steuerscheibe 27 eingreift, sich das Schutzelement 26 unter dem Thermodruckkopf 4 befindet (Figur 2), während das Schutzelement 26 von dem Thermodruckkopf 4 wegverschwenkt wird, wenn das hakenförmige Ende des Hebelarmes 31 außerhalb der Ausnehmung 28 auf der Steuerscheibe 27 aufliegt (Figur 3).It can be seen that when the hook-shaped end of the lever arm 31 engages the recess 28 of the control disk 27, the protective element 26 is located under the thermal print head 4 (Figure 2), while the protective element 26 is pivoted away from the thermal print head 4 when the hook-shaped End of the lever arm 31 outside the recess 28 rests on the control disk 27 (Figure 3).

Wie aus Figur 2 bis 6 ersichtlich, ist das Schutzelement 26 als Rechen ausgebildet. Weiters weist die Platte 14 an der Unterseite der Druckvorrichtung 3 an ihrer dem Thermodruckkopf 4 zugewandten Kante Lücken 35 auf. In die Lücken 35 tauchen die Zinken 36 des als Rechen ausgebildeten Schutzelementes 26, wenn sich das Schutzelement 26 in der Freigabeposition befindet, in der der Thermodruckkopf 4 in die Druckposition abgesenkt wird (Figur 6).As can be seen from FIGS. 2 to 6, the protective element 26 is designed as a rake. Furthermore, the plate 14 on the underside of the printing device 3 at its the thermal print head 4 facing edge gaps 35. The tines 36 of the protective element 26 constructed as a rake dip into the gaps 35 when the protective element 26 is in the release position, in which the thermal printing head 4 is lowered into the printing position (FIG. 6).

Hingegen sind die Zinken 36 aus den Lücken 35 in der Platte 14 in der Schutzposition nach vorne verschwenkt (Figur 5), wodurch der nach oben in die Ruheposition angehobene Thermodruckkopf 4 durch die Zinken 36 vor einer Berührung mit dem Ticket 11 geschützt wird.On the other hand, the prongs 36 are pivoted forward of the gaps 35 in the plate 14 in the protection position (FIG. 5), whereby the thermal printhead 4 raised to the rest position is protected from contact with the ticket 11 by the prongs 36.

Um eine durchgehende Lauffläche zu bilden, weist ferner die Platte 13 an der Barcode-Lesevorrichtung 2 an ihrer dem Thermodruckkopf 4 zugewandten Kante (38) ebenfalls Lücken 37 auf, in die die Zinken 36 in der Schutzposition gemäß Figur 5 eingreifen.In order to form a continuous running surface, furthermore, the plate 13 on the barcode reading device 2 also has gaps 37 on its edge (38) facing the thermal print head 4, into which the prongs 36 engage in the protective position according to FIG.

Claims (10)

Druckvorrichtung (3) mit einem Thermodruckkopf (4) zum Bedrucken eines Mediums (11), wobei der Thermodruckkopf (4) zwischen einer von einer Gegendruckwalze (9) wegbewegten Ruheposition und einer zu der Gegendruckwalze (9) hinbewegten Druckposition zum Bedrucken des Mediums (11) bewegbar ist, und das Medium (11) durch einen Spalt (15) zwischen Thermodruckkopf (4) und Gegendruckwalze (9) hindurch bewegbar ist, gekennzeichnet durch ein Schutzelement (26) und einen Aktuator, der das Schutzelement (26) zwischen einer Schutzposition, in der es den in die Ruheposition bewegten Thermodruckkopf (4) von dem Medium (11) trennt und einer Freigabeposition, in der es den Thermodruckkopf (4) zur Bewegung in die Druckposition freigibt, bewegt.Printing device (3) with a thermal print head (4) for printing on a medium (11), wherein the thermal print head (4) moves between a rest position moved away from a counterpressure roller (9) and a print position for printing on the medium (11) ), and the medium (11) is movable through a gap (15) between the thermal print head (4) and counterpressure roller (9), characterized by a protective element (26) and an actuator which moves the protective element (26) between a protective position in that it separates the thermal printhead (4) moved to the rest position from the medium (11) and moves to a release position in which it releases the thermal printhead (4) for movement into the printing position. Druckvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator zugleich den Antrieb des Thermodruckkopfes (4) zur Bewegung zwischen der Ruheposition und der Druckposition bildet.Printing device according to claim 1, characterized in that the actuator at the same time forms the drive of the thermal printing head (4) for movement between the rest position and the printing position. Druckvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Aktuator ein Getriebe mit einer Welle (19) zur Bewegung des Thermodruckkopfes (4) und des Schutzelementes (26) aufweist.Printing device according to claim 1 or 2, characterized in that the actuator has a gear with a shaft (19) for moving the thermal print head (4) and the protective element (26). Druckvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Getriebe eine Steuerscheibe (21, 27) auf der Welle (19) und einen an der Steuerscheibe (21, 27) angreifenden Hebel (22, 29) zur Bewegung des Thermodruckkopfes (4) und/oder des Schutzelementes (26) aufweist.Printing device according to claim 3, characterized in that the transmission is a control disc (21, 27) on the Shaft (19) and a on the control disc (21, 27) engaging lever (22, 29) for moving the thermal print head (4) and / or the protective element (26). Druckvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Hebel (29) zur Bewegung des Schutzelementes (26) als zweiarmiger Hebel ausgebildet ist, der mit einem Hebelarm (31) an der Steuerscheibe (27) angreift und dessen anderer Hebelarm (32) das Schutzelement (26) trägt.Printing device according to claim 4, characterized in that the lever (29) for moving the protective element (26) is designed as a two-armed lever which engages with a lever arm (31) on the control disk (27) and the other lever arm (32) the protective element (26) bears. Druckvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass eine Führung zur Bewegung des Thermodruckkopfes (4) zwischen der Ruheposition und der Druckposition vorgesehen ist, der Hebel (22) mit einem Ende (24) an dem Thermodruckkopf (4) und mit dem anderen Ende (23) an einer Halterung angelenkt ist, und die Steuerscheibe (21) an dem Hebel (22) zwischen den beiden Enden (23, 24) angreift.Printing device according to claim 4, characterized in that a guide for movement of the thermal print head (4) between the rest position and the printing position is provided, the lever (22) having one end (24) on the thermal print head (4) and with the other end ( 23) is hinged to a support, and the control disc (21) on the lever (22) between the two ends (23, 24) engages. Druckvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Medium (11) in dem Spalt (15) zwischen einer Lauffläche auf der Thermodruckkopfseite und einer Lauffläche (7) auf der Seite der Gegendruckwalze (9) geführt wird.Printing device according to one of the preceding claims, characterized in that the medium (11) in the gap (15) between a running surface on the thermal print head side and a running surface (7) on the side of the counter-pressure roller (9) is guided. Druckvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das Schutzelement (26) als Rechen ausgebildet ist und sich vor oder nach dem Thermodruckkopf (4) eine Platte (14) als Lauffläche auf der Thermodruckkopfseite anschließt, welche an ihrer dem Thermodruckkopf (4) zugewandten Kante mit Lücken (35) versehen ist, in die die Zinken (36) des Rechens in der Schutzposition des Schutzelementes (26) bewegbar sind.Printing device according to claim 7, characterized in that the protective element (26) is designed as a rake and before or after the thermal print head (4) a plate (14) as a running surface on the thermal print head side connects, which at its the thermal print head (4) facing edge is provided with gaps (35) into which the prongs (36) of the rake in the protective position of the protective element (26) are movable. Druckvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass sich vor und nach dem Thermodruckkopf (4) eine Platte (13, 14) mit Lücken (35, 37) an der dem Thermodruckkopf (4) zugewandten Seite anschließt und die Lücken in der Kante der Platte (13), die der Platte (14) auf der anderen Seite des Thermodruckkopfes (4) gegenüberliegt, aus deren Lücken (35) die Zinken (36) des Rechens in der Schutzposition des Schutzelementes (26) treten, zum Eingriff in die Zinken (36) des Rechens in der Schutzposition des Schutzelementes (26) ausgebildet sind.Printing device according to claim 8, characterized in that before and after the thermal printing head (4) a plate (13, 14) with gaps (35, 37) adjoins the side facing the thermal print head (4) and the gaps in the edge of the plate (13) which is opposite to the plate (14) on the other side of the thermal print head (4) from whose gaps (35) the prongs (36) of the rake in the protective position of the protective element (26), for engagement in the prongs ( 36) of the rake in the protective position of the protective element (26) are formed. Verwendung der Druckvorrichtung nach einem der vorstehenden Ansprüche in Ticket-Codiergeräten mit einer Leseeinrichtung (2) und/oder anderen Vorrichtungen als der Druckvorrichtung (3) zur Codierung des Tickets (11).Use of the printing device according to one of the preceding claims in ticket encoding devices with a reading device (2) and / or devices other than the printing device (3) for coding the ticket (11).
EP04028640A 2004-12-03 2004-12-03 Thermal printing head with protective element Not-in-force EP1666260B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT04028640T ATE510698T1 (en) 2004-12-03 2004-12-03 THERMAL PRINT HEAD WITH PROTECTIVE ELEMENT
EP04028640A EP1666260B1 (en) 2004-12-03 2004-12-03 Thermal printing head with protective element
ES04028640T ES2367002T3 (en) 2004-12-03 2004-12-03 THERMAL PRINT HEAD WITH PROTECTION ELEMENT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04028640A EP1666260B1 (en) 2004-12-03 2004-12-03 Thermal printing head with protective element

Publications (2)

Publication Number Publication Date
EP1666260A1 true EP1666260A1 (en) 2006-06-07
EP1666260B1 EP1666260B1 (en) 2011-05-25

Family

ID=34927631

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Application Number Title Priority Date Filing Date
EP04028640A Not-in-force EP1666260B1 (en) 2004-12-03 2004-12-03 Thermal printing head with protective element

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EP (1) EP1666260B1 (en)
AT (1) ATE510698T1 (en)
ES (1) ES2367002T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5876289A (en) * 1981-10-31 1983-05-09 Ricoh Co Ltd Protecting device for recording head
DE3406470C1 (en) 1984-02-23 1985-08-29 Kunz Kg, Wien Use of an embossing film for printing on plastic surfaces
JPH03121875A (en) * 1989-10-06 1991-05-23 Ricoh Co Ltd Recording apparatus
DE10116584A1 (en) 2001-03-22 2002-09-26 Hengstler Gmbh Thermal printer for use with media of different thicknesses has a print head arrangement that allows adjustment of the gap between the transport roller and the print bar so that wear on the print head is minimized

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5876289A (en) * 1981-10-31 1983-05-09 Ricoh Co Ltd Protecting device for recording head
DE3406470C1 (en) 1984-02-23 1985-08-29 Kunz Kg, Wien Use of an embossing film for printing on plastic surfaces
JPH03121875A (en) * 1989-10-06 1991-05-23 Ricoh Co Ltd Recording apparatus
DE10116584A1 (en) 2001-03-22 2002-09-26 Hengstler Gmbh Thermal printer for use with media of different thicknesses has a print head arrangement that allows adjustment of the gap between the transport roller and the print bar so that wear on the print head is minimized

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 173 (M - 232) 30 July 1983 (1983-07-30) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 321 (M - 1147) 15 August 1991 (1991-08-15) *

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ATE510698T1 (en) 2011-06-15
EP1666260B1 (en) 2011-05-25
ES2367002T3 (en) 2011-10-27

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