WO2012089182A1 - Printing apparatus - Google Patents

Printing apparatus Download PDF

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Publication number
WO2012089182A1
WO2012089182A1 PCT/DE2010/001525 DE2010001525W WO2012089182A1 WO 2012089182 A1 WO2012089182 A1 WO 2012089182A1 DE 2010001525 W DE2010001525 W DE 2010001525W WO 2012089182 A1 WO2012089182 A1 WO 2012089182A1
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WO
WIPO (PCT)
Prior art keywords
medium
printheads
carriage
printing device
wipers
Prior art date
Application number
PCT/DE2010/001525
Other languages
German (de)
French (fr)
Inventor
Hans Mathea
Original Assignee
Hans Mathea
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 Hans Mathea filed Critical Hans Mathea
Priority to DE112010006092.4T priority Critical patent/DE112010006092A5/en
Priority to PCT/DE2010/001525 priority patent/WO2012089182A1/en
Publication of WO2012089182A1 publication Critical patent/WO2012089182A1/en

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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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • B41J2/16544—Constructions for the positioning of wipers
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16585—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles for paper-width or non-reciprocating print heads
    • B41J2/16588—Print heads movable towards the cleaning unit

Definitions

  • the invention relates to a printing device according to the preamble of claim 1, with a plurality of print heads under which a printable, transportable in a transport direction medium can be arranged, wherein the print heads are arranged one behind the other in the transport direction of the medium.
  • inkjet heads are used regularly.
  • ink is injected through very small openings on the medium to be printed. By appropriate choice of openings results in the desired print image.
  • inkjet printheads A disadvantage of inkjet printheads is that ink dries at the exit of the openings and closes the openings. Therefore, inkjet printheads must be cleaned especially after a long printing pause.
  • Cleaning is usually done by forcing ink through all openings at elevated pressure. After ink has been forced through the openings, ink located on the surface of the ink-jet printhead is removed from the surface by means of a wiper.
  • the wiper used is a fiber flow. The fiber flow should not be used after disposal but disposed of.
  • a printing device with a plurality of print heads under which a medium to be printed can be arranged, which is transportable in a transport direction, wherein the print heads are arranged in the transport direction of the medium one behind the other, characterized in that the print heads are arranged on a carriage, the transverse to the transport direction from a working position in which the printheads are above the medium, in a cleaning position in which the printheads are not located above the medium, is adjustable, and for each printhead, a wiper is present, to which Printheads perform a relative movement when the carriage is adjusted, wherein the wiper are arranged parallel to the transport direction of the medium one behind the other.
  • the printheads are arranged on a carriage, which is adjustable from a working position in which the printheads are above the medium in a cleaning position in which the printheads are not located above the medium, can be the cleaning of the printheads perform in a simple manner.
  • the device can be designed such that the surfaces of the printheads to be cleaned in the cleaning position are very easily accessible, and on the other hand, there is no longer the risk that in the cleaning of the surfaces of the printheads remote ink or dirt particles on the printing medium fall.
  • the fact that the printheads can be adjusted to a cleaning position allows the printhead to be cleaned automatically.
  • the carriage can be adjusted transversely to the transport direction. This achieves in a simple manner that the print heads are no longer above the medium to be printed when the carriage is in the cleaning position.
  • a wiper is provided for each print head, to which the print heads perform a relative movement when the carriage is adjusted, wherein the wiper are arranged parallel to the transport direction of the medium one behind the other. This allows the surfaces of the cleaning printheads pass the wipers, allowing the surfaces to be cleaned without the wipers coming in contact with ink from different printheads. It is also possible to clean all printheads at the same time.
  • the wipers can also be formed for at least two print heads by sections of a one-piece wiper element which are arranged one behind the other in the transport direction and which extend over a plurality of print heads.
  • the wipers are adjustable from a working position to a rest position.
  • the cleaning of the printheads can be made specifically for a specific direction of movement of the printheads.
  • the cleaning of the printheads can make particular in the movement of the carriage from its cleaning position to its working position, which is why the
  • Wiper can be arranged close to the medium to be printed. This has a very advantageous effect on the design of the device.
  • the trough is advantageously parallel to the transport direction of the medium to be printed next to the medium, whereby disposal of the ink collected in the tub is not affected by the medium to be printed. Conversely, there is also no risk that the medium to be printed will be contaminated in the disposal of the ink.
  • the wiper has an elastic element, which is clampably connected to a main body of the wiper.
  • the elastic element which is preferably a perfluoroelastomer, this can be renewed in a simple manner.
  • a perfluoroelastomer has proven to be particularly effective in cleaning the printhead. On the one hand the print head can be cleaned very well and on the other hand it has a long service life.
  • the wipers are arranged pivotably about an axis. As a result, the wiper can be adjusted in a very simple manner from its rest position to its working position.
  • the carriage is adjustable to a service position. This makes it possible to remove the printheads from the area of the wiper, so that on the one hand the printheads are easily accessible and on the other hand, the wipers are easily accessible. The latter is particularly advantageous if the elastic element of a wiper to be renewed or cleaned.
  • Fig. 1 is a schematic representation of an inventive design
  • FIG. 2 is a schematic representation of the printing device shown in Figure 1 from the side along the section line AA, wherein the carriage is in its working position
  • 3 is a schematic representation of the printing device shown in Figure 1 from the side along the section line AA, wherein the carriage is in its cleaning position
  • Fig. 4 is a schematic representation of the printing device shown in Figure 1 from the side along the section line A-A, wherein the carriage is in its stripping position, and
  • Fig. 5 is a schematic representation of the printing device shown in Figure 1 from the side along the section line A-A, wherein the carriage is in its service position.
  • FIG. 1 designed as a band-shaped aluminum foil to be printed medium 2 below printheads 1a, 1b, 1c, d out through the printing device.
  • the aluminum foil 2 rests on a sheet, not shown in the figure, and is deflected via two deflecting rollers 4a, 4b, which can be driven by means of a drive, not shown in the figure. If the deflection rollers 4a, 4b are driven, the aluminum foil 2 moves in a direction represented by an arrow 4 'past the printing heads 1a, 1b, 1c, 1d.
  • the printheads 1a, 1b, 1c, 1d are ink-jet printheads containing ink in cyan, red, yellow and black. By an appropriate actuation of the print heads 1a, 1b, 1c, 1d, ink is sprayed onto the aluminum foil 2 in accordance with an image to be printed.
  • the print heads 1a, 1b, 1c, 1d are arranged in a U-shaped carriage 3.
  • the carriage 3 has on its leg ends outwardly projecting bushes 3a, which are each arranged on a guide 7 mounted in a machine frame 8.
  • one of the bushings 3 a is provided with a tab 3 a Piston rod 9a of a pneumatic cylinder 9 connected.
  • the carriage 3 is moved transversely to the transport direction 4 'when the pneumatic cylinder 9 is actuated. This can be inferred in particular from FIGS. 2 and 3.
  • the pneumatic cylinder 9 is connected to the machine frame 8 by means of an adjustable fastening element 8a.
  • wipers 6a, 6b, 6c, 6d are arranged below the plane in which the aluminum foil 2 extends.
  • the wipers 6a, 6b, 6c, 6d each consist of a base body 6a ', 6b', 6c ', 6d' and a lip-shaped made of a perfluoro-elastomeric elastic element 6a ", 6b", 6c ", 6d".
  • the base bodies 6a ', 6b', 6c ', 6d' are respectively disposed on an axis 6a '' 'about which they are pivotable, and instead of having separate wipers 6a, 6b, 6c, 6d, a wiper may also be present. of which each printhead 1 a, 1 b, 1 c, 1 d is associated with an area.
  • a further pneumatic cylinder 10a, 10b, 10c, 10d is provided in each case.
  • the further cylinders 10a, 10b, 10c, 10d By operating the further cylinders 10a, 10b, 10c, 10d, the respective wiper 6a, 6b, 6c, 6d can be moved from a rest position, in which it is shown in FIGS. 2 and 3, into a working position, in which it is shown in FIG is shown, pivot.
  • the working position of the wipers 6a, 6b, 6c, 6d is selected so that the elastic elements 6a “, 6b", 6c ", 6d” rests with little pressure on the surface of the respective print head when the carriage 3 is returned from its cleaning position its working position is adjusted, as shown in Figure 4.
  • ink adhering to the surface of the printhead concerned is stripped off the elastic member 6a ", 6b", 6c ", 6d".
  • the printheads are 1a, 1 b, 1 c, 1 d above a trough 5, when the carriage 3 is in its cleaning position. From the tub 5 is thus for the cleaning of the printheads through the openings of the printheads pressed ink 1 1 collected.
  • ink 11 'stripped off from the surfaces of the printheads 1a, 1b, 1c, 1d by the wipers 6a, 6b, 6c, 6d is collected by the tray 5.
  • the position of the retaining element 8a can be changed.
  • the holding element 8a can be brought into a position in which it is farther away from the wipers 6a, 6b, 6c, 6d.
  • the print heads 1a, 1b, 1c, 1d are further away from the wipers 6a, 6b, 6c, 6d, so that the wipers 6a, 6b, 6c, 6d are easily accessible.

Abstract

A printing apparatus having a plurality of printing heads (1a, 1b, 1c, 1d), beneath which can be arranged a printable medium (2) which can be transported in a transporting direction (4'), wherein the printing heads (1a, 1b, 1c, 1d) are arranged one behind the other in the transporting direction (4') of the medium (2), is characterized in that the printing heads (1a, 1b, 1c, 1d) are arranged on a carriage (3) which can be adjusted transversally to the transporting direction (4') from an operating position, in which the printing heads (1a, 1b, 1c, 1d) are located above the medium (2), into a cleaning position, in which the printing heads (1a, 1b, 1c, 1d) are not located above the medium (2), and a wiper (6a, 6b, 6c, 6d) is present for each printing head (1a, 1b, 1c, 1d), the printing heads (1a, 1b, 1c, 1d) executing a movement relative to the wipers when the carriage (3) is adjusted, wherein the wipers (6a, 6b, 6c, 6d) are arranged one behind the other parallel to the transporting direction (4') of the medium (2).

Description

Druckvorrichtung  printing device
Die Erfindung betrifft eine Druckvorrichtung nach dem Oberbegriff des Anspruchs 1 , mit mehreren Druckköpfen unter denen ein zu bedruckendes, in eine Transportrichtung transportierbares Medium anordenbar ist, wobei die Druckköpfe in Transportrichtung des Mediums hintereinander angeordnet sind. The invention relates to a printing device according to the preamble of claim 1, with a plurality of print heads under which a printable, transportable in a transport direction medium can be arranged, wherein the print heads are arranged one behind the other in the transport direction of the medium.
Eine derartige Druckvorrichtung ist im Stand der Technik hinlänglich bekannt. Als Druckköpfe werden regelmäßig so genannte Tintenstrahlköpfe verwendet. Bei diesen Tintenstrahlköpfen wird Tinte durch sehr kleine Öffnungen auf das zu bedruckende Medium gespritzt. Durch entsprechende Wahl der Öffnungen ergibt sich das gewünschte Druckbild. Such a printing device is well known in the art. As printheads so-called inkjet heads are used regularly. In these inkjet heads, ink is injected through very small openings on the medium to be printed. By appropriate choice of openings results in the desired print image.
Nachteilig bei Tintenstrahldruckköpfen ist, dass Tinte am Ausgang der Öffnungen trocknet und die Öffnungen verschließt. Daher müssen Tintenstrahldruckköpfe insbesondere nach einer längeren Druckpause gereinigt werden. A disadvantage of inkjet printheads is that ink dries at the exit of the openings and closes the openings. Therefore, inkjet printheads must be cleaned especially after a long printing pause.
Die Reinigung geschieht in der Regel dadurch, dass Tinte mit erhöhtem Druck durch alle Öffnungen gepresst wird. Nachdem Tinte durch die Öffnungen gepresst wurde, wird sich auf der Oberfläche des Tintenstrahldruckkopfes befindliche Tinte mittels eines Wischers von der Oberfläche entfernt. Als Wischer wird ein Faserfließ verwendet. Das Faserfließ soll nach seinem Gebrauch nicht mehr verwendet sondern entsorgt werden. Cleaning is usually done by forcing ink through all openings at elevated pressure. After ink has been forced through the openings, ink located on the surface of the ink-jet printhead is removed from the surface by means of a wiper. The wiper used is a fiber flow. The fiber flow should not be used after disposal but disposed of.
Wenngleich mittels der bekannten Druckvorrichtung nach erfolgter Reinigung auch ein sehr gutes Druckbild erzeugt werden kann, so hat die bekannte Druckvorrichtung dennoch den Nachteil, dass die Reinigung der Tintenstrahldruckköpfe sehr aufwendig ist. Daher wird häufig auf eine Reinigung verzichtet, wodurch sich die Qualität des Druckbildes verschlechtert. Zwar ist aus der US 5,103,244 A eine Druckvorrichtung bekannt, in welcher mehrere Druckköpfe an einem Schlitten angeordnet sind, der quer zur Transportrichtung eines zu bedruckenden Blattes in der Reinigungsposition verstellbar ist, wobei die Druckköpfe bei der Verstellung in die Reinigungsposition an einem Wischer vorbei geführt werden, jedoch dient dieser Wischer zur Reinigung aller an ihm vorbei geführten Druckköpfe. Dies ist nachteilig, da hierdurch möglicherweise Tintenreste von einem Druckkopf auf den nachfolgenden Übertragen werden. Da die Druckköpfe quer zur Transportrichtung des zu bedruckenden Blattes hintereinander angeordnet sind, ist die Bauform des Druckers entsprechend groß. Although a very good print image can be generated by means of the known printing device after cleaning, the known printing device nevertheless has the disadvantage that the cleaning of the inkjet print heads is very complicated. Therefore, cleaning is often omitted, thereby degrading the quality of the printed image. Although it is known from US 5,103,244 A a printing device in which a plurality of printheads are arranged on a carriage which is adjustable transversely to the transport direction of a sheet to be printed in the cleaning position, wherein the printheads are guided in the adjustment to the cleaning position on a wiper However, this wiper is used to clean all past him printheads. This is disadvantageous because it may possibly transfer ink residue from one print head to the next. Since the print heads are arranged one behind the other transversely to the transport direction of the sheet to be printed, the design of the printer is correspondingly large.
Eine ähnliche Druckvorrichtung ist auch aus der US 6,561 ,619 B1 bekannt. Auch diese Druckvorrichtung weist die vorstehend genannten Nachteile auf. A similar printing device is also known from US 6,561, 619 B1. This printing device also has the aforementioned disadvantages.
Es ist Aufgabe der Erfindung eine eingangs genannte Druckvorrichtung derart auszubilden, dass die Druckköpfe auf einfache Weise und schnell gereinigt werden können. It is an object of the invention to form a printing device mentioned above in such a way that the print heads can be cleaned easily and quickly.
Die Lösung dieser Aufgabe ergibt sich aus den Merkmalen des kennzeichnenden Teils des Anspruchs 1. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. The solution of this problem arises from the features of the characterizing part of claim 1. Advantageous developments of the invention will become apparent from the dependent claims.
Gemäß der Erfindung ist eine Druckvorrichtung, mit mehreren Druckköpfen unter denen ein zu bedruckendes Medium anordenbar ist, welches in eine Transportrichtung transportierbar ist, wobei die Druckköpfe in Transportrichtung des Mediums hintereinander angeordnet sind, dadurch gekennzeichnet, dass die Druckköpfe an einem Schlitten angeordnet sind, der quer zur Transportrichtung von einer Arbeitsposition, in der sich die Druckköpfe über dem Medium befinden, in eine Reinigungsposition, in der sich die Druckköpfe nicht über dem Medium befinden, verstellbar ist, und für jeden Druckkopf ein Wischer vorhanden ist, zu denen die Druckköpfe eine Relativbewegung durchführen, wenn der Schlitten verstellt wird, wobei die Wischer parallel zur Transportrichtung des Mediums hintereinander angeordnet sind. According to the invention, a printing device, with a plurality of print heads under which a medium to be printed can be arranged, which is transportable in a transport direction, wherein the print heads are arranged in the transport direction of the medium one behind the other, characterized in that the print heads are arranged on a carriage, the transverse to the transport direction from a working position in which the printheads are above the medium, in a cleaning position in which the printheads are not located above the medium, is adjustable, and for each printhead, a wiper is present, to which Printheads perform a relative movement when the carriage is adjusted, wherein the wiper are arranged parallel to the transport direction of the medium one behind the other.
Dadurch, dass die Druckköpfe an einem Schlitten angeordnet sind, der von einer Arbeitsposition, in der sich die Druckköpfe über dem Medium befinden, in eine Reinigungsposition, in der sich die Druckköpfe nicht über dem Medium befinden, verstellbar ist, lässt sich die Reinigung der Druckköpfe auf einfache Weise durchführen. Zum einen kann die Vorrichtung derart ausgebildet sein, dass die zu reinigenden Oberflächen der Druckköpfe in der Reinigungsposition sehr gut zugänglich sind, und zum anderen besteht nicht mehr die Gefahr, dass bei der Reinigung von den Oberflächen der Druckköpfe entfernte Tinten- oder Schmutzpartikel auf das zu bedruckende Medium fallen. Insbesondere lässt sich dadurch, dass sich die Druckköpfe in eine Reinigungsposition verstellen lassen, die Reinigung des Druckkopfes automatisch vornehmen. The fact that the printheads are arranged on a carriage, which is adjustable from a working position in which the printheads are above the medium in a cleaning position in which the printheads are not located above the medium, can be the cleaning of the printheads perform in a simple manner. On the one hand, the device can be designed such that the surfaces of the printheads to be cleaned in the cleaning position are very easily accessible, and on the other hand, there is no longer the risk that in the cleaning of the surfaces of the printheads remote ink or dirt particles on the printing medium fall. In particular, the fact that the printheads can be adjusted to a cleaning position allows the printhead to be cleaned automatically.
Dadurch, dass die Druckköpfe auf einfache Weise maschinell gereinigt werden können, lässt sich eine Reinigung der Druckköpfe ohne größeren Zeitaufwand auch nach einem geringen Stillstand der Druckvorrichtung vornehmen. Dies wirkt sich sehr vorteilhaft auf die Qualität der Druckbilder aus. The fact that the printheads can be easily cleaned by machine, a cleaning of the printheads can be made without much time, even after a slight stoppage of the printing device. This has a very beneficial effect on the quality of the printed images.
In vorteilhafter Weise lässt sich bei der Druckvorrichtung, der Schlitten quer zur Transportrichtung verstellen. Hierdurch wird auf einfache Weise erreicht, dass sich die Druckköpfe nicht mehr oberhalb des zu bedruckenden Mediums befinden, wenn sich der Schlitten in der Reinigungsposition befindet. Advantageously, in the printing device, the carriage can be adjusted transversely to the transport direction. This achieves in a simple manner that the print heads are no longer above the medium to be printed when the carriage is in the cleaning position.
Besonders vorteilhaft ist es, dass für jeden Druckkopf ein Wischer vorhanden ist, zu denen die Druckköpfe eine Relativbewegung durchführen, wenn der Schlitten verstellt wird, wobei die Wischer parallel zur Transportrichtung des Mediums hintereinander angeordnet sind. Hierdurch lassen sich die Oberflächen der zu reinigenden Druckköpfe an den Wischern vorbeiführen, wodurch die Oberflächen gereinigt werden können, ohne dass die Wischer mit Tinte von verschiedenen Druckköpfen in Berührung kommen. Des Weiteren ist es möglich, alle Druckköpfe gleichzeitig zu reinigen. Die Wischer können für mindestens zwei Druckköpfe auch durch in Transportrichtung hintereinander angeordnete Abschnitte eines einstückigen Wischerelements gebildet sein, das sich über mehrere Druckköpfe erstreckt. It is particularly advantageous that a wiper is provided for each print head, to which the print heads perform a relative movement when the carriage is adjusted, wherein the wiper are arranged parallel to the transport direction of the medium one behind the other. This allows the surfaces of the cleaning printheads pass the wipers, allowing the surfaces to be cleaned without the wipers coming in contact with ink from different printheads. It is also possible to clean all printheads at the same time. The wipers can also be formed for at least two print heads by sections of a one-piece wiper element which are arranged one behind the other in the transport direction and which extend over a plurality of print heads.
In vorteilhafter Weise sind die Wischer von einer Arbeitsposition in eine Ruheposition verstellbar. Hierdurch lässt sich die Reinigung der Druckköpfe gezielt bei einer bestimmten Bewegungsrichtung der Druckköpfe vornehmen. So lässt sich die Reinigung der Druckköpfe insbesondere bei der Bewegung des Schlittens von seiner Reinigungsposition in seine Arbeitsposition vornehmen, weshalb die Advantageously, the wipers are adjustable from a working position to a rest position. As a result, the cleaning of the printheads can be made specifically for a specific direction of movement of the printheads. Thus, the cleaning of the printheads can make particular in the movement of the carriage from its cleaning position to its working position, which is why the
Wischer nahe bei dem zu bedruckenden Medium angeordnet sein können. Dies wirkt sich sehr vorteilhaft auf die Bauform der Vorrichtung aus. Wiper can be arranged close to the medium to be printed. This has a very advantageous effect on the design of the device.
Bei einer besonderen Ausführungsform der Erfindung ist eine Wanne vorhanden, über der die Druckköpfe angeordnet sind, wenn sich der Schlitten in seiner Reinigungsposition befindet. Hierdurch lässt sich von den Druckköpfen entfernte Tinte auf einfache Weise aufsammeln und nach einem entsprechenden längeren Betrieb der Druckvorrichtung entsorgen. In a particular embodiment of the invention, there is a trough over which the printheads are located when the carriage is in its cleaning position. As a result, ink removed from the printheads can be easily collected and disposed of after a corresponding prolonged operation of the printing apparatus.
Die Wanne befindet sich in vorteilhafter Weise parallel zur Transportrichtung des zu bedruckenden Mediums neben dem Medium, wodurch eine Entsorgung der in der Wanne aufgefangenen Tinte durch das zu bedruckende Medium nicht beeinträchtigt wird. Hierdurch besteht umgekehrt auch nicht die Gefahr, dass das zu bedruckende Medium bei der Entsorgung der Tinte verunreinigt wird. The trough is advantageously parallel to the transport direction of the medium to be printed next to the medium, whereby disposal of the ink collected in the tub is not affected by the medium to be printed. Conversely, there is also no risk that the medium to be printed will be contaminated in the disposal of the ink.
Bei einer weiteren vorteilhaften Ausführungsform der Erfindung ist vorgesehen, dass der Wischer ein elastisches Element aufweist, welches klemmbar mit einem Grundkörper des Wischers verbunden ist. Das elastische Element, welches vorzugsweise ein Perfluor-Elastomer ist, lässt sich hierdurch auf einfache Weise erneuern. Ein Perfluor-Elastomer hat sich zur Reinigung des Druckkopfes als besonders wirksam heraus gestellt. Zum Einen lässt sich der Druckkopf sehr gut reinigen und zum Anderen weist es eine hohe Standzeit auf. In a further advantageous embodiment of the invention, it is provided that the wiper has an elastic element, which is clampably connected to a main body of the wiper. The elastic element which is preferably a perfluoroelastomer, this can be renewed in a simple manner. A perfluoroelastomer has proven to be particularly effective in cleaning the printhead. On the one hand the print head can be cleaned very well and on the other hand it has a long service life.
Bei einer weiteren besonderen Ausführungsform der Erfindung ist vorgesehen, dass die Wischer um eine Achse schwenkbar angeordnet sind. Hierdurch lassen sich die Wischer auf sehr einfache Weise von ihrer Ruheposition in ihre Arbeitsposition verstellen. In a further particular embodiment of the invention it is provided that the wipers are arranged pivotably about an axis. As a result, the wiper can be adjusted in a very simple manner from its rest position to its working position.
Sehr vorteilhaft ist auch eine Ausführungsform der Erfindung, bei der der Schlitten in eine Serviceposition verstellbar ist. Hierdurch besteht die Möglichkeit, die Druckköpfe aus dem Bereich der Wischer zu entfernen, so dass einerseits die Druckköpfe leicht zugänglich sind und andererseits die Wischer leicht zugänglich sind. Letzteres ist insbesondere dann vorteilhaft, wenn das elastische Element eines Wischers erneuert oder gereinigt werden soll. Also very advantageous is an embodiment of the invention in which the carriage is adjustable to a service position. This makes it possible to remove the printheads from the area of the wiper, so that on the one hand the printheads are easily accessible and on the other hand, the wipers are easily accessible. The latter is particularly advantageous if the elastic element of a wiper to be renewed or cleaned.
Weitere Einzelheiten, Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines besonderen Ausführungsbeispiels unter Bezugnahme auf die Zeichnung. Further details, features and advantages of the present invention will become apparent from the following description of a particular embodiment with reference to the drawings.
Es zeigt: It shows:
Fig. 1 eine schematische Darstellung einer erfindungsgemäß ausgebildeten Fig. 1 is a schematic representation of an inventive design
Druckvorrichtung von vorne,  Printing device from the front,
Fig. 2 eine schematische Darstellung der in Figur 1 dargestellten Druckvorrichtung von der Seite entlang der Schnittlinie A-A, wobei sich der Schlitten in seiner Arbeitsposition befindet, Fig. 3 eine schematische Darstellung der in Figur 1 dargestellten Druckvorrichtung von der Seite entlang der Schnittlinie A-A, wobei sich der Schlitten in seiner Reinigungsposition befindet, 2 is a schematic representation of the printing device shown in Figure 1 from the side along the section line AA, wherein the carriage is in its working position, 3 is a schematic representation of the printing device shown in Figure 1 from the side along the section line AA, wherein the carriage is in its cleaning position,
Fig. 4 eine schematische Darstellung der in Figur 1 dargestellten Druckvorrichtung von der Seite entlang der Schnittlinie A-A, wobei sich der Schlitten in seiner Abstreifposition befindet, und  Fig. 4 is a schematic representation of the printing device shown in Figure 1 from the side along the section line A-A, wherein the carriage is in its stripping position, and
Fig. 5 eine schematische Darstellung der in Figur 1 dargestellten Druckvorrichtung von der Seite entlang der Schnittlinie A-A, wobei sich der Schlitten in seiner Serviceposition befindet.  Fig. 5 is a schematic representation of the printing device shown in Figure 1 from the side along the section line A-A, wherein the carriage is in its service position.
Wie Figur 1 entnommen werden kann, wird ein als bandförmige Aluminiumfolie ausgebildetes zu bedruckendes Medium 2 unterhalb von Druckköpfen 1a, 1b, 1c, d durch die Druckvorrichtung geführt. Die Aluminiumfolie 2 liegt auf einem in der Figur nicht dargestellten Blech auf und wird über zwei Umlenkrollen 4a, 4b, welche mittels eines in der Figur nicht dargestellten Antriebs antreibbar sind, umgelenkt. Werden die Umlenkrollen 4a, 4b angetrieben, bewegt sich die Aluminiumfolie 2 in eine durch einen Pfeil 4' dargestellte Richtung an den Druckköpfen 1a, 1b, 1c, 1d vorbei. As can be seen from Figure 1, designed as a band-shaped aluminum foil to be printed medium 2 below printheads 1a, 1b, 1c, d out through the printing device. The aluminum foil 2 rests on a sheet, not shown in the figure, and is deflected via two deflecting rollers 4a, 4b, which can be driven by means of a drive, not shown in the figure. If the deflection rollers 4a, 4b are driven, the aluminum foil 2 moves in a direction represented by an arrow 4 'past the printing heads 1a, 1b, 1c, 1d.
Die Druckköpfe 1a, 1b, 1c, 1d sind Tintenstrahldruckköpfe, welche Tinte in den Farben cyan, rot, gelb und schwarz enthalten. Durch eine entsprechende Ansteue- rung der Druckköpfe 1a, 1b, 1c, 1d wird entsprechend einem zu druckenden Bild Tinte auf die Aluminiumfolie 2 aufgesprüht. The printheads 1a, 1b, 1c, 1d are ink-jet printheads containing ink in cyan, red, yellow and black. By an appropriate actuation of the print heads 1a, 1b, 1c, 1d, ink is sprayed onto the aluminum foil 2 in accordance with an image to be printed.
Die Druckköpfe 1a, 1b, 1c, 1d sind in einem U-förmig ausgebildeten Schlitten 3 angeordnet. Der Schlitten 3 weist an seinen Schenkelenden nach außen abstehende Buchsen 3a auf, welche jeweils auf einer in einem Maschinengestell 8 befestigten Führung 7 angeordnet sind. Wie insbesondere den Figuren 2 bis 5 entnommen werden kann, ist eine der Buchsen 3a über eine Lasche 3b mit einer Kolbenstange 9a eines Pneumatikzylinders 9 verbunden. Der Schlitten 3 wird quer zur Transportrichtung 4' verstellt, wenn der Pneumatikzylinder 9 betätigt wird. Dies lässt sich insbesondere den Figuren 2 und 3 entnehmen. The print heads 1a, 1b, 1c, 1d are arranged in a U-shaped carriage 3. The carriage 3 has on its leg ends outwardly projecting bushes 3a, which are each arranged on a guide 7 mounted in a machine frame 8. As can be seen in particular from FIGS. 2 to 5, one of the bushings 3 a is provided with a tab 3 a Piston rod 9a of a pneumatic cylinder 9 connected. The carriage 3 is moved transversely to the transport direction 4 'when the pneumatic cylinder 9 is actuated. This can be inferred in particular from FIGS. 2 and 3.
Der Pneumatikzylinder 9 ist mittels eines verstellbaren Befestigungselements 8a mit dem Maschinengestell 8 verbunden. The pneumatic cylinder 9 is connected to the machine frame 8 by means of an adjustable fastening element 8a.
Unterhalb der Ebene, in der die Aluminiumfolie 2 verläuft, sind Wischer 6a, 6b, 6c, 6d angeordnet. Die Wischer 6a, 6b, 6c, 6d bestehen jeweils aus einem Grundkörper 6a', 6b', 6c', 6d' und einem lippenförmigen aus einem Perfluor-Elastomer bestehenden elastischen Element 6a", 6b", 6c", 6d". Die Gmndkörper 6a', 6b', 6c', 6d' sind jeweils auf einer Achse 6a'" angeordnet, um die sie schwenkbar sind. Statt dass separate Wischer 6a, 6b, 6c, 6d vorhanden sind, kann auch ein Wischer vorhanden sein, von dem jedem Druckkopf 1 a, 1 b, 1c, 1d ein Bereich zugeordnet ist. Below the plane in which the aluminum foil 2 extends, wipers 6a, 6b, 6c, 6d are arranged. The wipers 6a, 6b, 6c, 6d each consist of a base body 6a ', 6b', 6c ', 6d' and a lip-shaped made of a perfluoro-elastomeric elastic element 6a ", 6b", 6c ", 6d". The base bodies 6a ', 6b', 6c ', 6d' are respectively disposed on an axis 6a '' 'about which they are pivotable, and instead of having separate wipers 6a, 6b, 6c, 6d, a wiper may also be present. of which each printhead 1 a, 1 b, 1 c, 1 d is associated with an area.
Zum Verschwenken der Wischer 6a, 6b, 6c, 6d ist jeweils ein weiterer Pneumatikzylinder 10a, 10b, 10c, 10d vorgesehen. Durch Betätigung der weiteren Zylinder 10a, 10b, 10c, 10d lässt sich der jeweilige Wischer 6a, 6b, 6c, 6d von einer Ruhestellung, in der er in den Figuren 2 und 3 dargestellt ist, in eine Arbeitsstellung, in der er in Figur 4 dargestellt ist, verschwenken. For pivoting the wiper 6a, 6b, 6c, 6d, a further pneumatic cylinder 10a, 10b, 10c, 10d is provided in each case. By operating the further cylinders 10a, 10b, 10c, 10d, the respective wiper 6a, 6b, 6c, 6d can be moved from a rest position, in which it is shown in FIGS. 2 and 3, into a working position, in which it is shown in FIG is shown, pivot.
Die Arbeitsstellung der Wischer 6a, 6b, 6c, 6d ist so gewählt, dass die elastischen Elemente 6a", 6b", 6c", 6d" mit geringem Druck auf der Oberfläche des betreffenden Druckkopfs aufliegt, wenn der Schlitten 3 von seiner Reinigungsposition wieder in seine Arbeitsposition verstellt wird, wie dies in Figur 4 dargestellt ist. Hierdurch wird auf der Oberfläche des betreffenden Druckkopfs haftende Tinte von dem elastischen Element 6a", 6b", 6c", 6d" abgestreift. Wie insbesondere Figur 3 entnommen werden kann, befinden sich die Druckköpfe 1a, 1 b, 1 c, 1d oberhalb einer Wanne 5, wenn sich der Schlitten 3 in seiner Reinigungsposition befindet. Von der Wanne 5 wird somit zur Reinigung der Druckköpfe durch die Öffnungen der Druckköpfe gepresste Tinte 1 1 aufgefangen. Ebenso wird von den Wischern 6a, 6b, 6c, 6d von den Oberflächen der Druckköpfe 1a, 1b, 1 c, 1d abgestreifte Tinte 11 ' von der Wanne 5 aufgefangen. The working position of the wipers 6a, 6b, 6c, 6d is selected so that the elastic elements 6a ", 6b", 6c ", 6d" rests with little pressure on the surface of the respective print head when the carriage 3 is returned from its cleaning position its working position is adjusted, as shown in Figure 4. As a result, ink adhering to the surface of the printhead concerned is stripped off the elastic member 6a ", 6b", 6c ", 6d". As can be seen in particular Figure 3, the printheads are 1a, 1 b, 1 c, 1 d above a trough 5, when the carriage 3 is in its cleaning position. From the tub 5 is thus for the cleaning of the printheads through the openings of the printheads pressed ink 1 1 collected. Likewise, ink 11 'stripped off from the surfaces of the printheads 1a, 1b, 1c, 1d by the wipers 6a, 6b, 6c, 6d is collected by the tray 5.
Wie Figur 4 entnommen werden kann, lässt sich die Position des Halteelements 8a verändern. Durch Lösen eines in den Figuren nicht dargestellten Verriegelungsmechanismus lässt sich das Halteelement 8a in eine Position bringen, in der es weiter von den Wischern 6a, 6b, 6c, 6d entfernt ist. Hierdurch sind auch die Druckköpfe 1a, 1 b, 1c, 1d weiter von den Wischern 6a, 6b, 6c, 6d entfernt, so dass die Wischer 6a, 6b, 6c, 6d leicht zugänglich sind. As can be seen from FIG. 4, the position of the retaining element 8a can be changed. By releasing a locking mechanism, not shown in the figures, the holding element 8a can be brought into a position in which it is farther away from the wipers 6a, 6b, 6c, 6d. As a result, the print heads 1a, 1b, 1c, 1d are further away from the wipers 6a, 6b, 6c, 6d, so that the wipers 6a, 6b, 6c, 6d are easily accessible.

Claims

Patentansprüche claims
Druckvorrichtung, mit mehreren Druckköpfen (1a, 1 b, 1c, 1d) unter denen ein zu bedruckendes, in eine Transportrichtung (4') transportierbares Medium (2) anordenbar ist, wobei die Druckköpfe (1a, 1 b, 1c, 1d) in Transportrichtung (4') des Mediums (2) hintereinander angeordnet sind, Printing device, with a plurality of print heads (1a, 1 b, 1 c, 1 d) under which a to be printed, in a transport direction (4 ') transportable medium (2) can be arranged, wherein the print heads (1 a, 1 b, 1 c, 1 d) in Transport direction (4 ') of the medium (2) are arranged one behind the other,
dadurch gekennzeichnet, characterized,
dass die Druckköpfe (1a, 1b, 1c, 1d) an einem Schlitten (3) angeordnet sind, der quer zur Transportrichtung (4') von einer Arbeitsposition, in der sich die Druckköpfe (1a, 1 b, 1c, 1d) über dem Medium (2) befinden, in eine Reinigungsposition, in der sich die Druckköpfe (1a, 1b, 1c, 1d) nicht über dem Medium (2) befinden, verstellbar ist, und für jeden Druckkopf (1 a, b, 1c, 1d) ein Wischer (6a, 6b, 6c, 6d) vorhanden ist, zu denen die Druckköpfe (1a, 1 b, 1 c, 1d) eine Relativbewegung durchführen, wenn der Schlitten (3) verstellt wird, wobei die Wischer (6a, 6b, 6c, 6d) parallel zur Transportrichtung (4') des Mediums (2) hintereinander angeordnet sind. in that the printing heads (1a, 1b, 1c, 1d) are arranged on a carriage (3) which transversely to the transport direction (4 ') from a working position in which the printing heads (1a, 1b, 1c, 1d) above the Medium (2) are in a cleaning position in which the printheads (1a, 1b, 1c, 1d) are not above the medium (2) is adjustable, and for each printhead (1 a, b, 1c, 1d) a wiper (6a, 6b, 6c, 6d) is provided, to which the print heads (1a, 1b, 1c, 1d) perform a relative movement when the carriage (3) is displaced, the wipers (6a, 6b, 6c, 6d) parallel to the transport direction (4 ') of the medium (2) are arranged one behind the other.
Druckvorrichtung nach Anspruch 1 , Printing device according to claim 1,
dadurch gekennzeichnet, characterized,
dass eine Wanne (5) vorhanden ist, welche derart angeordnet ist, dass der wenigstens eine Druckkopf (1a, 1 b, 1c, 1d) über ihr angeordnet ist, wenn sich der Schlitten (3) in seiner Reinigungsposition befindet. a trough (5) is provided, which is arranged such that the at least one print head (1a, 1b, 1c, 1d) is arranged above it when the carriage (3) is in its cleaning position.
Druckvorrichtung nach Anspruch 1 oder 2, Printing device according to claim 1 or 2,
dadurch gekennzeichnet, characterized,
dass die Wischer (6a, 6b, 6c, 6d) von einer Arbeitsposition in eine Ruheposition verstellbar sind. the wipers (6a, 6b, 6c, 6d) are adjustable from a working position to a rest position.
4. Druckvorrichtung nach einem der Ansprüche 1 bis 3, 4. Printing device according to one of claims 1 to 3,
dadurch gekennzeichnet,  characterized,
dass die Wischer (6a, 6b, 6c, 6d) ein elastisches Element (6a", 6b", 6c", 6d") aufweisen, welches klemmbar mit einem Grundkörper (6a', 6b', 6c', 6d') des Wischers (6a, 6b, 6c, 6d) verbunden ist.  in that the wipers (6a, 6b, 6c, 6d) have an elastic element (6a ", 6b", 6c ", 6d") which can be clamped to a base body (6a ', 6b', 6c ', 6d') of the wiper (6a, 6b, 6c, 6d) is connected.
5. Druckvorrichtung nach einem der Ansprüche 1 bis 4, 5. Printing device according to one of claims 1 to 4,
dadurch gekennzeichnet,  characterized,
dass die Wischer (6a, 6b, 6c, 6d) um eine Achse (6a'") verschwenkbar angeordnet sind.  in that the wipers (6a, 6b, 6c, 6d) are pivotable about an axis (6a '").
6. Druckvorrichtung nach einem der Ansprüche 1 bis 5, 6. Printing device according to one of claims 1 to 5,
dadurch gekennzeichnet,  characterized,
dass der Schlitten (3) in eine Serviceposition verstellbar ist.  that the carriage (3) is adjustable to a service position.
PCT/DE2010/001525 2010-12-27 2010-12-27 Printing apparatus WO2012089182A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206994A1 (en) * 2014-04-11 2015-10-15 Koenig & Bauer Ag Printing unit with at least one print head and at least one cleaning device and a method for cleaning at least one nozzle surface of at least one print head
US20160159097A1 (en) * 2014-12-05 2016-06-09 Dover Europe Sàrl Ink-jet printer with wiper assembly

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103244A (en) 1990-07-05 1992-04-07 Hewlett-Packard Company Method and apparatus for cleaning ink-jet printheads
US6561619B1 (en) 2000-01-31 2003-05-13 Hewlett-Packard Company Flipping wiper scraper system for inkjet printheads
US6585347B1 (en) * 2000-01-31 2003-07-01 Hewlett-Packard Company Printhead servicing based on relocating stationary print cartridges away from print zone
EP1462257A2 (en) * 2003-03-27 2004-09-29 Hewlett-Packard Development Company, L.P. Printing device and method for servicing same
US20050088480A1 (en) * 2003-01-23 2005-04-28 Paul Wouters Wiper assembly for inkjet printer
US20050264601A1 (en) * 2004-05-25 2005-12-01 Samsung Electronics Co., Ltd. Inkjet printer
US20060061618A1 (en) * 2004-09-21 2006-03-23 Z Corporation Apparatus and methods for servicing 3D printers
US20070263029A1 (en) * 2006-05-11 2007-11-15 Brother Kogyo Kabushiki Kaisha Ink-jet recording apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103244A (en) 1990-07-05 1992-04-07 Hewlett-Packard Company Method and apparatus for cleaning ink-jet printheads
US6561619B1 (en) 2000-01-31 2003-05-13 Hewlett-Packard Company Flipping wiper scraper system for inkjet printheads
US6585347B1 (en) * 2000-01-31 2003-07-01 Hewlett-Packard Company Printhead servicing based on relocating stationary print cartridges away from print zone
US20050088480A1 (en) * 2003-01-23 2005-04-28 Paul Wouters Wiper assembly for inkjet printer
EP1462257A2 (en) * 2003-03-27 2004-09-29 Hewlett-Packard Development Company, L.P. Printing device and method for servicing same
US20050264601A1 (en) * 2004-05-25 2005-12-01 Samsung Electronics Co., Ltd. Inkjet printer
US20060061618A1 (en) * 2004-09-21 2006-03-23 Z Corporation Apparatus and methods for servicing 3D printers
US20070263029A1 (en) * 2006-05-11 2007-11-15 Brother Kogyo Kabushiki Kaisha Ink-jet recording apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206994A1 (en) * 2014-04-11 2015-10-15 Koenig & Bauer Ag Printing unit with at least one print head and at least one cleaning device and a method for cleaning at least one nozzle surface of at least one print head
WO2015154919A1 (en) 2014-04-11 2015-10-15 Koenig & Bauer Aktiengesellschaft Printing unit with at least one printing head and at least one cleaning device, and method for cleaning at least one nozzle surface of at least one printing head
DE102014206994B4 (en) 2014-04-11 2022-06-09 Koenig & Bauer Ag Printing unit with at least one print head and at least one cleaning device and a method for cleaning at least one nozzle surface of at least one print head
US20160159097A1 (en) * 2014-12-05 2016-06-09 Dover Europe Sàrl Ink-jet printer with wiper assembly
US9878544B2 (en) 2014-12-05 2018-01-30 Dover Europe Sarl Ink-jet printer with wiper assembly
US10029470B2 (en) 2014-12-05 2018-07-24 Dover Europe Sàrl Ink-jet printer with wiper assembly

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