EP3251859B1 - Device for printing a web to be printed - Google Patents
Device for printing a web to be printed Download PDFInfo
- Publication number
- EP3251859B1 EP3251859B1 EP17167458.3A EP17167458A EP3251859B1 EP 3251859 B1 EP3251859 B1 EP 3251859B1 EP 17167458 A EP17167458 A EP 17167458A EP 3251859 B1 EP3251859 B1 EP 3251859B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- web
- modules
- relative movement
- guide element
- 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.)
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Links
- 238000007639 printing Methods 0.000 title claims description 132
- 239000000463 material Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 7
- 238000007641 inkjet printing Methods 0.000 claims description 2
- 239000000976 ink Substances 0.000 description 20
- 239000002699 waste material Substances 0.000 description 10
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Images
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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
- B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
-
- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material
-
- 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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
-
- 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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
-
- 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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/046—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for the guidance of continuous copy material, e.g. for preventing skewed conveyance of the continuous copy material
-
- 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 present invention relates to a device for printing a web of printing material on a first and / or a second side with the features of claim 1.
- the invention lies in the technical field of digital printing on web-shaped printing materials.
- it is already known to print on web-shaped printing materials, for example made of paper, using the inkjet printing process.
- the U.S. 5,878,320 discloses a printing machine for the digital printing of web-shaped printing material. Instead of inkjet printheads, however, electrophotographic printheads are used.
- the document discloses an embodiment in which four print heads transfer a multicolored print image to an endless intermediate carrier.
- the web-like printing material is brought into contact with the intermediate carrier at a first point and is thus printed on a first side.
- the substrate is then guided over turning bars and turned over in the process.
- the printing material is then brought into contact with the intermediate carrier a second time, but with the side that has not yet been printed, and the reverse side is printed in the process.
- a structure corresponding to this exemplary embodiment requires a lot of installation space due to the use of the endless intermediate carrier.
- the circumferential movement of the intermediate carrier and the transport movement of the web must be coordinated with one another in terms of control technology.
- the DE 10 2014010 904 B3 discloses a printing machine for printing sheet-like printing material.
- a digital printing unit is pivotably arranged in such a way that it can print both the front side and the rear side of a sheet.
- the US 2011/0205316 A1 discloses a printing machine for printing on sheets which are fed past the same digital printing units twice. For this purpose, the sheets are guided on a loop of the transport path through a helical turning device.
- the US 2014/0055548 A1 shows a thermal printer for duplex operation with a pivoting manifold.
- the US 2006/0028524 A1 shows a printing machine with a transport path for sheet-like printing material.
- the JP 2011/143628 discloses a printing method and a device for double-sided printing, a web of printing material being divided into web sections.
- the US 2001/0021331 A1 discloses a duplex printer with a pivoting printing mechanism.
- a device with the features of claim 1 represents a solution to this object or these objects according to the invention.
- the device according to the invention advantageously requires little installation space and advantageously uses fewer components and control technology. As a result, the manufacturing costs can be reduced and the device can be operated in a space-saving manner.
- a particular advantage of the invention can be seen in the fact that the printing modules print directly on the web and therefore an intermediate carrier with additional space requirements and control technology can be dispensed with.
- This advantage is achieved in that the web is guided a first time and - after being turned - a second time through a respective part of an active area of the printing device with the printing modules directly printing the web.
- the pressure modules transfer the pressure fluid to the web without an intermediate carrier. Finally, printed products can be finished from the web.
- the first guide element and the second guide element are different from one another, i.e. not one and the same element.
- the turning device is also preferably different from the two guide elements.
- the two parts of the effective area are also preferably different from one another.
- a further advantage can be seen in the fact that the invention makes it possible to control how little waste is generated during the execution of the relative movement or how productive the device or a printing press equipped with it is by means of the amount of the relative movement.
- a further development of the invention which is preferred due to the simplicity and speed of implementation can be characterized in that the relative movement is a pivoting movement. It can be provided that the two guide elements are mounted pivotably about a common pivot axis. It can also be provided that the pivot axis lies on the side of the guide elements facing away from the pressure modules.
- a preferred development of the invention can be characterized in that the relative movement is a linear movement and is essentially parallel to the web running direction present in the effective area.
- the solution has the advantage that the pressure modules can be arranged without mutual inclination to one another and therefore compact.
- the printing modules are inkjet print heads and that the printing fluid is ink.
- a preferred development of the invention can be characterized in that there is at least one drive which generates the relative movement. It can be provided that the drive moves the at least one printing module and / or the at least one guide element at a speed at which less waste is generated than a limit value for waste is established.
- a preferred further development of the invention can be characterized in that the effective area of the printing device is composed of the effective areas of the pressure modules. It can be provided that the relative movement is a movement along at least the effective areas of two pressure modules.
- the invention also relates to a printing press which comprises at least one device for printing a web of printing material, the device being a device according to the invention or one of its preferred developments or a specific exemplary embodiment.
- Figure 1A shows schematically a device 1 for printing a web of printing material, wherein the device can be part of a printing machine 2, preferably an inkjet web printing machine.
- the printing material web 6 for example a paper or film web
- the web is guided in a web running direction 7 from an unwinder 3 to a winder 4.
- the web is guided around several rollers 8.
- the web has a first side 6A and a second side 6B. With the device shown it is possible to print on both sides of the web 6A, 6B.
- the device 1 also has a controller 5 which controls the web run and the printing device 10.
- the printing device 10 comprises three digital printing modules 11, 12 and 13, which are preferably designed as inkjet print heads. However, the printing device can also have more or fewer printing modules, but at least two.
- the printing device is assigned an active area 20 which is composed of a first and a second part 20a and 20b.
- the first and the second part of the active area of the printing device can in turn be composed of the active areas of the individual print modules, for example the shown active areas 21, 22 and 23 Printing device, transferred to the printing substrate web 6. In other words: the printing material is printed in the effective areas.
- FIG. 12 also shows a first and a second guide element 40a and 40b for guiding the web 6.
- the two guide elements can, for example, be designed as guide plates and generate supporting blown air and / or each have at least one roller, in particular a deflection roller.
- the two guide elements preferably have curved surfaces.
- the device 1 shown has a turning device 41 which turns the web 6 by means of preferably crossed turning bars 42 in a known manner, so that the web can be printed on the second guide element 40b on its reverse side or reverse printing side, while it is printed on the first guide element 40a on its Front side or face side is printed.
- the device 1 has a web store 43, which comprises rollers that can be displaced relative to one another in a known manner, so that the printing substrate web 6, or a certain length section thereof, can be stored in the web store and removed from the web store.
- the dimensioning of the path memory determines the length of the storable path section. If a web section of length L is to be printed without interruption on one side of the web and then printed on the opposite side, the web memory must be dimensioned in such a way that it can store at least the web section of length L (if necessary, minus possible stored web lengths on the other web path) .
- the device 1 shown also has a first dryer 44 and a second dryer 45, each for drying the ink applied to the web 6 or both sides thereof.
- the dryers can be, for example, UV dryers or IR dryers.
- a swivel system 53 can be moved around a swivel axis 52 by means of a drive 51 and thereby a relative movement 50 (movement towards the end) for the printing device 10 or its printing modules 11, 12 and 13.
- a comparison between the Figures 1A and 1B clearly shows how the swivel system 53 is arranged before and after the relative movement.
- the pivoting system is in a first position (face printing position) in which the first guide element 40A is arranged at least partially adjacent to the printing device or the printing modules.
- the web 6, which is guided by means of the first guide element 40A, therefore arrives with its front printing side 6a in the active area 20 of the printing device.
- the web 6 is printed on the straight side, runs into the web memory 43 and is stored there. It can be provided for this purpose to stop the winder 4 or to rotate it only very slowly. After finishing the straight printing, the web 6 is removed from the web storage and made available for the perfecting. It can be provided for this purpose to stop the unwinder 3 or to rotate it only very slowly.
- the pivoting system 53 is arranged in a second position (perfecting position) in which the second guide element 40b is arranged at least partially adjacent to the printing device 10 or the printing modules 11, 12 and 13.
- the guide element reaches this position by a relative movement 50 in the opposite direction (backward movement).
- the web 6 with its back pressure side 6b comes into the effective area of the printing device or the printing modules.
- the device according to the invention therefore has the advantage of making it possible to print on both sides of the web with the same set of printing modules or of being able to save a second set of printing modules.
- a sensor 56 can be provided in order to control the so-called reversal register, ie to control the relative position of the face print image and the reverse print image to one another.
- the sensor can detect the face print image or register marks and initiate the printing of the reverse print image in a suitable manner.
- the web When switching from straight printing mode to perfecting mode, or during its duration and i.e. During the duration of the relative movements 50, the web can run into the web memory 43 and can be removed from it again after the switchover.
- the dimensioning of the web store, the transport speed of the web movement and the duration of the switching process can be coordinated.
- At least one pressure module is preferably deactivated for a short time so that no pressure fluid gets onto the guide elements or into the gap between them.
- the deactivation time is preferably chosen to be as short as possible in order to reduce the amount of waste (length of the web section that is not completely printed).
- unprinted web 6 runs into web memory 43 and is stored there. Before the start of a new straight print (printing on the first web side 6a), the stored, unprinted web is removed from the web memory, but returned, i.e. in the direction of unwinder 3, moved.
- a sensor 57 may be provided to monitor the return of the web and to stop it when it reaches the previously printed image (or images), i. to ensure an essentially seamless printing of the first web side 6a.
- a linear system 54 with a slide 55 is provided here.
- This also comprises a first and a second guide element 40a and 40b - each preferably arranged on the slide - and a drive 51, in particular a linear drive, for example a spindle drive for the slide.
- a linear drive for example a spindle drive for the slide.
- the two guide elements Preferably have flat, non-curved surfaces.
- a linear adjustment movement of the guide elements is possible by means of the drive, so that in turn the face printing side 6a or the reverse printing side 6b of the web 6 can be brought into the active area or areas.
- Unwinder and rewinder 3 and 4 guide rollers 8, turning device 41, web storage 43 and dryer 44 and 45 are corresponding Figure 1A and 1B executed.
- Figure 3A shows schematically the device 1 in five different states a to e during the relative movement 50 or during the switchover from the straight printing mode to the perfecting mode.
- the following applies to the values of the speeds in this example, provided they are not zero and are not being accelerated / braked:
- the first printing module 11, the second printing module 12 and the third printing module 13 print ink on the face printing side 6a of the web 6. It can be seen that on the first side of the web or the face printing side, a first ink 71 of the first printing module, a second ink 72 of the second printing module and a third ink 73 of the third printing module come to rest.
- this staircase is shown again and it can be seen that if the area of the staircase cannot be used as a printed product, an area 60 is generated which is to be regarded as waste.
- the area 60 of the waste or its length M depends, as can be seen, on the length of the steps and can be reduced by a higher speed v1 of the relative movement during the adjustment process.
- the controller 5 can therefore execute the relative movement at a speed which is so high that the waste 60 has a length M which is less than a predetermined limit value M 'for the length of the waste M.
- M ' for the length of the waste M.
- v1 approaches infinity
- M goes to zero.
- the remaining steps then correspond to the distances between adjacent printing modules.
- the swivel system 53 or the linear system 54 can be arranged permanently in the straight printing position.
- the swivel system 53 or the linear system 54 could be arranged permanently in the perfecting position.
- the web 6 would in any case only be printed on one side.
- the web can also be guided directly from the first guide element 40a to the second guide element 40b in straight printing operation, that is to say not via the turning device 41 and the web store 43.
- the exemplary embodiments shown can also be provided not to move the guide elements 40a and 40b, but rather the printing modules 11, 12 and 13 (pivot or move linearly).
- the guide elements 40a and 40b are preferably moved. These are usually lighter and not, like the print modules, connected to ink supplies.
Landscapes
- Ink Jet (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum Bedrucken einer Bahn aus Bedruckstoff auf einer ersten und/oder einer zweiten Seite mit den Merkmalen von Anspruch 1.The present invention relates to a device for printing a web of printing material on a first and / or a second side with the features of claim 1.
Die Erfindung liegt in dem technischen Gebiet des Digitaldrucks auf bahnförmige Bedruckstoffe. In diesem Gebiet ist es bereits bekannt, bahnförmige Bedruckstoffe, zum Beispiel aus Papier, mit dem Tintenstrahl-Druckverfahren zu bedrucken.The invention lies in the technical field of digital printing on web-shaped printing materials. In this field it is already known to print on web-shaped printing materials, for example made of paper, using the inkjet printing process.
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Vor dem Hintergrund dieses Standes der Technik ist es eine Aufgabe der vorliegenden Erfindung, eine verbesserte Vorrichtung zum Bedrucken einer Bahn aus Bedruckstoff zu schaffen, welche wenig Bauraum beansprucht. Es ist eine weitere Aufgabe, bei einer solchen Vorrichtung Bauteile und Steuerungstechnik einzusparen und dadurch die Herstellkosten zu senken.Against the background of this prior art, it is an object of the present invention to create an improved device for printing a web of printing material which takes up little space. It is a further object to save on components and control technology in such a device and thereby to reduce manufacturing costs.
Eine erfindungsgemäße Lösung dieser Aufgabe bzw. dieser Aufgaben stellt eine Vorrichtung mit den Merkmalen von Anspruch 1 dar.A device with the features of claim 1 represents a solution to this object or these objects according to the invention.
Eine erfindungsgemäße Vorrichtung zum Bedrucken einer Bahn aus Bedruckstoff, z.B. Papier oder Folie, auf einer ersten und/oder einer zweiten Seite weist folgende Merkmale auf: eine Druckeinrichtung mit wenigstens zwei Druckmodulen und mit einem der Druckeinrichtung zugeordneten Wirkbereich, in welchem Druckfluid mittels der Druckmodule auf die Bahn übertragen wird, ein erstes Führungselement zum Führen der Bahn entlang wenigstens eines ersten Teils des Wirkbereichs, eine dem ersten Führungselement in Bahnlaufrichtung nachgeordnete Wendeeinrichtung für die Bahn, ein der Wendeeinrichtung in Bahnlaufrichtung nachgeordnetes zweites Führungselement zum Führen der Bahn entlang wenigstens eines zweiten Teils des Wirkbereichs, und weist das Merkmal auf, dass zum Ausführen einer Relativbewegung wenigstens ein Druckmodul relativ zu wenigstens einem der beiden Führungselemente bewegbar angeordnet ist und/oder wenigstens eines der beiden Führungselemente relativ zu wenigstens einem der Druckmodule bewegbar angeordnet ist.A device according to the invention for printing a web of printing material, e.g. paper or film, on a first and / or a second side has the following features: a printing device with at least two printing modules and with an active area assigned to the printing device, in which printing fluid by means of the printing modules the web is transferred, a first guide element for guiding the web along at least a first part of the active area, one of the first Guide element downstream turning device for the web in the web running direction, a second guide element downstream of the turning device in the web running direction for guiding the web along at least a second part of the active area, and has the feature that for performing a relative movement at least one printing module relative to at least one of the two guide elements is arranged to be movable and / or at least one of the two guide elements is arranged to be movable relative to at least one of the printing modules.
Die erfindungsgemäße Vorrichtung beansprucht in vorteilhafter Weise wenig Bauraum und kommt in vorteilhafter Weise mit weniger Bauteilen und Steuerungstechnik aus. Hierdurch können die Herstellkosten gesenkt und die Vorrichtung platzsparend betrieben werden.The device according to the invention advantageously requires little installation space and advantageously uses fewer components and control technology. As a result, the manufacturing costs can be reduced and the device can be operated in a space-saving manner.
Ein besonderer Vorteil der Erfindung ist darin zu sehen, dass die Druckmodule die Bahn direkt bedrucken und daher auf einen Zwischenträger mit zusätzlichem Platzbedarf und Steuerungstechnik verzichtet werden kann. Dieser Vorteil wird dadurch erzielt, dass die Bahn ein erstes Mal und - nach einer Wendung - ein zweites Mal durch einen jeweiligen Teil eines Wirkbereichs der Druckeinrichtung mit den die Bahn direkt bedruckenden Druckmodulen geführt wird. In den jeweiligen Teilen des Wirkbereichs übertragen die Druckmodule das Druckfluid zwischenträgerlos auf die Bahn. Aus der Bahn können schließlich Druckprodukte endverarbeitet werden.A particular advantage of the invention can be seen in the fact that the printing modules print directly on the web and therefore an intermediate carrier with additional space requirements and control technology can be dispensed with. This advantage is achieved in that the web is guided a first time and - after being turned - a second time through a respective part of an active area of the printing device with the printing modules directly printing the web. In the respective parts of the effective area, the pressure modules transfer the pressure fluid to the web without an intermediate carrier. Finally, printed products can be finished from the web.
Das erste Führungselement und das zweite Führungselement sind erfindungsgemäß voneinander verschieden, d.h. nicht ein und dasselbe Element. Weiterhin ist auch die Wendeeinrichtung vorzugsweise von den beiden Führungselementen verschieden. Und schließlich sind auch die beiden Teile des Wirkbereichs vorzugsweise voneinander verschieden.According to the invention, the first guide element and the second guide element are different from one another, i.e. not one and the same element. Furthermore, the turning device is also preferably different from the two guide elements. And finally, the two parts of the effective area are also preferably different from one another.
Ein weiterer Vorteil kann darin gesehen werden, dass es die Erfindung ermöglicht, durch die Höhe des Betrags der Relativbewegung zu steuern, wie wenig Makulatur während der Ausführung der Relativbewegung erzeugt wird bzw. wie produktiv die Vorrichtung oder eine damit ausgestattete Druckmaschine ist.A further advantage can be seen in the fact that the invention makes it possible to control how little waste is generated during the execution of the relative movement or how productive the device or a printing press equipped with it is by means of the amount of the relative movement.
Vorteilhafte und daher bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus der Beschreibung und den zugehörigen Zeichnungen.Advantageous and therefore preferred developments of the invention emerge from the subclaims and from the description and the associated drawings.
Eine aufgrund der Einfachheit und Schnelligkeit der Durchführung bevorzugte Weiterbildung der Erfindung kann sich dadurch auszeichnen, dass die Relativbewegung eine Schwenkbewegung ist. Dabei kann vorgesehen sein, dass die beiden Führungselemente um eine gemeinsame Schwenkachse schwenkbar gelagert sind. Dabei kann auch vorgesehen sein, dass die Schwenkachse auf der den Druckmodulen abgewandten Seite der Führungselemente liegt.A further development of the invention which is preferred due to the simplicity and speed of implementation can be characterized in that the relative movement is a pivoting movement. It can be provided that the two guide elements are mounted pivotably about a common pivot axis. It can also be provided that the pivot axis lies on the side of the guide elements facing away from the pressure modules.
Eine bevorzugte Weiterbildung der Erfindung kann sich dadurch auszeichnen, dass die Relativbewegung eine lineare Bewegung ist und im Wesentlichen parallel zur im Wirkbereich vorhandenen Bahnlaufrichtung ist. Die Lösung hat den Vorteil, dass die Druckmodule ohne gegenseitige Neigung zueinander und daher kompakt angeordnet werden können.A preferred development of the invention can be characterized in that the relative movement is a linear movement and is essentially parallel to the web running direction present in the effective area. The solution has the advantage that the pressure modules can be arranged without mutual inclination to one another and therefore compact.
Erfindungsgemäß ist vorgesehen, dass die Druckmodule Tintenstrahl-Druckköpfe sind und dass das Druckfluid Tinte ist.According to the invention it is provided that the printing modules are inkjet print heads and that the printing fluid is ink.
Eine bevorzugte Weiterbildung der Erfindung kann sich dadurch auszeichnen, dass wenigstens ein Antrieb vorhanden ist, welcher die Relativbewegung erzeugt. Dabei kann vorgesehen sein, dass der Antrieb das wenigstens eine Druckmodul und/oder das wenigstens eine Führungselement mit einer Geschwindigkeit bewegt, bei welcher weniger Makulatur erzeugt wird, als dass ein Grenzwert für Makulatur festgelegt.A preferred development of the invention can be characterized in that there is at least one drive which generates the relative movement. It can be provided that the drive moves the at least one printing module and / or the at least one guide element at a speed at which less waste is generated than a limit value for waste is established.
Eine bevorzugte Weiterbildung der Erfindung kann sich dadurch auszeichnen, dass sich der Wirkbereich der Druckeinrichtung aus den Wirkbereichen der Druckmodule zusammensetzt. Dabei kann vorgesehen sein, dass die Relativbewegung eine Bewegung entlang wenigstens der Wirkbereiche von zwei Druckmodulen ist.A preferred further development of the invention can be characterized in that the effective area of the printing device is composed of the effective areas of the pressure modules. It can be provided that the relative movement is a movement along at least the effective areas of two pressure modules.
Die Erfindung betrifft auch eine Druckmaschine, welche wenigstens eine Vorrichtung zum Bedrucken einer Bahn aus Bedruckstoff umfasst, wobei es sich bei der Vorrichtung um eine erfindungsgemäße Vorrichtung bzw. einer ihrer bevorzugten Weiterbildungen oder um ein konkretes Ausführungsbeispiel handelt.The invention also relates to a printing press which comprises at least one device for printing a web of printing material, the device being a device according to the invention or one of its preferred developments or a specific exemplary embodiment.
Die Erfindung und deren vorteilhafte Weiterbildungen werden nachfolgend unter Bezug auf die Zeichnungen anhand bevorzugter Ausführungsbeispiele näher beschrieben. In den Zeichnungen sind einander entsprechende Elemente mit jeweils denselben Bezugszeichen versehen. Teilweise wurden sich wiederholende Bezugszeichen auch weggelassen.The invention and its advantageous developments are described in more detail below with reference to the drawings using preferred exemplary embodiments. In the drawings, elements that correspond to one another are provided with the same reference numerals. In some cases, repetitive reference symbols have also been omitted.
Die Zeichnungen zeigen:
- Figur 1A:
- Ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung, bevor eine Relativbewegung ausgeführt wurde;
- Figur 1B:
- Die Vorrichtung aus
Figur 1A , nachdem eine Relativbewegung ausgeführt wurde; - Figur 2A:
- Eine weitere bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung, bevor eine Relativbewegung ausgeführt wurde;
- Figur 2B:
- Die Vorrichtung aus
Figur 2A , nachdem eine Relativbewegung ausgeführt wurde; - Figur 3A:
- Die Vorrichtung aus den
Figuren 2A und2B während der Ausführung einer Relativbewegung; - Figur 3B:
- Eine schematische Darstellung des Tintenauftrags auf der Bahn und des durch die Relativbewegung erzeugten Makulatur-Bereichs.
- Figure 1A:
- A preferred embodiment of a device according to the invention, before a relative movement has been carried out;
- Figure 1B:
- The device off
Figure 1A after a relative movement has been carried out; - Figure 2A:
- Another preferred embodiment of the device according to the invention, before a relative movement has been carried out;
- Figure 2B:
- The device off
Figure 2A after a relative movement has been carried out; - Figure 3A:
- The device from the
Figures 2A and2 B during the execution of a relative movement; - Figure 3B:
- A schematic representation of the ink application on the web and the waste area generated by the relative movement.
Die Druckeinrichtung 10 umfasst in dem dargestellten Ausführungsbeispiel drei digitale Druckmodule 11, 12 und 13, welche bevorzugt als Tintenstrahl-Druckköpfe ausgeführt sind. Die Druckeinrichtung kann jedoch auch mehr oder weniger Druckmodule aufweisen, wenigstens jedoch zwei. Der Druckeinrichtung ist ein Wirkbereich 20 zugeordnet, welcher sich aus einem ersten und einem zweiten Teil 20a und 20b zusammensetzt. Der erste und der zweite Teil des Wirkbereichs der Druckeinrichtung können sich wiederum aus Wirkbereichen der einzelnen Druckmodule zusammensetzen, zum Beispiel den gezeigten Wirkbereichen 21, 22 und 23. In den jeweiligen Wirkbereichen wird Druckfluid 30, insbesondere Tinte, von der Druckeinrichtung bzw. den Druckmodulen der Druckeinrichtung, auf die Bedruckstoffbahn 6 übertragen. Mit anderen Worten: In den Wirkbereichen erfolgt das Bedrucken des Bedruckstoffs.In the exemplary embodiment shown, the
Weiterhin weist die in
Weiterhin weist die Vorrichtung 1 einen Bahnspeicher 43 auf, welcher in bekannter Weise gegeneinander verschiebbare Rollen umfasst, so dass die Bedruckstoffbahn 6, bzw. ein bestimmter Längenabschnitt davon, in dem Bahnspeicher gespeichert und aus dem Bahnspeicher entnommen werden kann. Die Dimensionierung des Bahnspeichers bestimmt dabei die Länge des speicherbaren Bahnabschnitts. Soll ein Bahnabschnitt der Länge L auf einer Bahnseite unterbrechungsfrei bedruckt werden und anschließend auf der Gegenseite bedruckt werden, so ist der Bahnspeicher so zu dimensionieren, dass er wenigstens den Bahnabschnitt der Länge L speichern kann (ggf. abzüglich möglicher gespeicherter Bahnlängen auf dem sonstigen Bahnpfad).Furthermore, the device 1 has a
Schließlich weist die gezeigte Vorrichtung 1 auch einen ersten Trockner 44 und einen zweiten Trockner 45 auf, jeweils zum Trocknen der auf die Bahn 6 bzw. deren beiden Seiten aufgebrachten Tinte. Bei den Trocknern kann es sich zum Beispiel um UV-Trockner oder IR-Trockner handeln.Finally, the device 1 shown also has a
In
Die Bahn 6 wird auf der Schöndruckseite bedruckt, läuft in den Bahnspeicher 43 ein und wird dort gespeichert. Es kann hierzu vorgesehen sein, den Aufwickler 4 anzuhalten oder nur sehr langsam zu drehen. Nach Abschluss des Schöndrucks wird die Bahn 6 aus dem Bahnspeicher entnommen und für den Widerdruck bereitgestellt. Es kann hierzu vorgesehen sein, den Abwickler 3 anzuhalten oder nur sehr langsam zu drehen.The
In
Ein Sensor 56 kann vorgesehen sein, um den sogenannten Wende-Passer zu steuern, d.h. die relative Lage des Schöndruck-Bildes und des Widerdruck-Bildes zueinander zu steuern. Der Sensor kann das Schöndruck-Bild oder Passer-Marken erfassen und den Druck des Widerdruck-Bildes passgerecht einleiten.A
Beim Umschalten vom Schöndruckbetrieb in den Widerdruckbetrieb, bzw. während dessen Dauer und d.h. während der Dauer der Relativbewegungen 50 , kann die Bahn in den Bahnspeicher 43 laufen und nach Abschluss des Umschaltens wieder aus diesem entnommen werden. Hierzu können die Dimensionierung des Bahnspeichers, die Transportgeschwindigkeit der Bahnbewegung und die Dauer des Umschaltprozesses aufeinander abgestimmt werden.When switching from straight printing mode to perfecting mode, or during its duration and i.e. During the duration of the
Während des Umschaltens wird wenigstens ein Druckmodul für kurze Zeit bevorzugt deaktiviert, so dass kein Druckfluid auf die Führungselemente oder in den Spalt dazwischen gelangt. Die Zeitspanne der Deaktivierung wird dabei bevorzugt so kurz wie möglich gewählt, um die entstehende Menge an Makulatur (Länge des nicht vollständig bedruckten Bahnabschnitts) zu verringern.During the switchover, at least one pressure module is preferably deactivated for a short time so that no pressure fluid gets onto the guide elements or into the gap between them. The deactivation time is preferably chosen to be as short as possible in order to reduce the amount of waste (length of the web section that is not completely printed).
Während des Widerdrucks (Bedrucken der zweiten Bahnseite 6b) läuft unbedruckte Bahn 6 in den Bahnspeicher 43 ein und wird dort gespeichert. Vor dem Start eines neuen Schöndrucks (Bedrucken der ersten Bahnseite 6a) wird die gespeicherte, unbedruckte Bahn aus dem Bahnspeicher entnommen, jedoch zurück, d.h. in Richtung Abwickler 3, bewegt. Ein Sensor 57 kann vorgesehen sein, um das Rücklaufen der Bahn zu überwachen und beim Erreichen des zuvor gedruckten Bildes (oder der Bilder) zu stoppen, d.h. ein im Wesentlichen nahtloses Bedrucken der ersten Bahnseite 6a zu gewährleisten.During the perfecting (printing on the
In den
Im Zustand a drucken das erste Druckmodul 11, das zweite Druckmodul 12 und das dritte Druckmodul 13 Tinte auf die Schöndruckseite 6a der Bahn 6. Es ist erkennbar, dass auf der ersten Seite der Bahn bzw. der Schöndruckseite eine erste Tinte 71 des ersten Druckmoduls, eine zweite Tinte 72 des zweiten Druckmoduls und eine dritte Tinte 73 des dritten Druckmoduls zu liegen kommen. Für die Geschwindigkeiten gilt: v1=v3=0, v2=v.In state a, the
Im Zustand b sind die beiden Führungselemente 40a und 40b infolge der Relativbewegung 50 im Vergleich zum Zustand a bereits etwas verschoben. In diesem Zustand können die beiden Druckmodule 11 und 12 noch auf die erste Seite 6a der Bahn drucken, während das Druckmodul 13 gerade beginnt, auf die zweite Seite der Bahn 6b zu drucken. Für die Geschwindigkeiten gilt: v1=v2=v3= v.In state b, the two
Im Zustand c und im Zustand d beginnen nun auch das zweite Druckmodul 12 und das erste Druckmodul 11 damit, auf die zweite Seite 6b der Bahn zu drucken. Auf diese Weise gelangt erste Tinte 81 des ersten Druckmoduls, zweite Tinte 82 des zweiten Druckmoduls und dritte Tinte 83 des dritten Druckmoduls auf die zweite Seite 6b der gewendeten Bahn. Für die Geschwindigkeiten gilt: v1=v2=v3= v.In state c and in state d, the
Im Zustand e wird die Bahn 6 im Widerdruck bedruckt, wobei für die Geschwindigkeiten gilt: v1=v2=0, v3= v. Es ist zudem erkennbar, dass durch das Umschalten bzw. die Relativbewegung der beiden Führungselemente eine Art Treppe sowohl der Tinten 71 bis 73 als auch der Tinten 81 bis 83 entstehen kann (vgl. die Zustände a mit e).In state e, the
In der
Soll mit der erfindungsgemäßen Vorrichtung 1 nur im Schöndruckbetrieb gedruckt werden, so kann das Schwenksystem 53 oder das Linearsystem 54 permanent in der Schöndruck-Position angeordnet sein. Alternativ könnte das Schwenksystem 53 oder das Linearsystem 54 permanent in der Widerdruck-Position angeordnet sein. In beiden Fällen würde die Bahn 6 jedenfalls nur einseitig bedruckt werden. Weiter alternativ kann die Bahn im Schöndruck-Betrieb auch direkt vom ersten Führungselement 40a zum zweiten Führungselement 40b geführt werden, also nicht über die Wendeeinrichtung 41 und den Bahnspeicher 43.If the device 1 according to the invention is only to be used for straight printing operation, the
Alternativ zu den in den
- 11
- Vorrichtungcontraption
- 22
- DruckmaschinePrinting press
- 33
- AbwicklerUnwinders
- 44th
- AufwicklerRewinder
- 55
- Steuerungcontrol
- 66th
- Bahntrain
- 6a6a
- erste Seite der Bahnfirst page of the web
- 6b6b
- zweite Seite der Bahnsecond side of the web
- 77th
- BahnlaufrichtungDirection of travel
- 88th
- Rollenroll
- 1010
- DruckeinrichtungPrinting facility
- 1111
- erstes Druckmodul, insbesondere Tintenstrahl-Druckkopffirst print module, in particular an inkjet print head
- 1212
- zweites Druckmodul, insbesondere Tintenstrahl-Druckkopfsecond print module, in particular inkjet print head
- 1313
- drittes Druckmodul, insbesondere Tintenstrahl-Druckkopfthird print module, in particular inkjet print head
- 2020th
- Wirkbereich der DruckeinrichtungEffective range of the pressure device
- 20a20a
- erster Teil des Wirkbereichs der Druckeinrichtungfirst part of the effective area of the printing device
- 20b20b
- zweiter Teil des Wirkbereichs der Druckeinrichtungsecond part of the effective area of the printing device
- 2121st
- Wirkbereich des ersten DruckmodulsEffective range of the first pressure module
- 2222nd
- Wirkbereich des zweiten DruckmodulsEffective range of the second pressure module
- 2323
- Wirkbereich des dritten DruckmodulsEffective range of the third pressure module
- 3030th
- Druckfluid, insbesondere TintePrinting fluid, especially ink
- 40a40a
- erstes Führungselementfirst guide element
- 40b40b
- zweites Führungselementsecond guide element
- 4141
- WendeeinrichtungTurning device
- 4242
- WendestangenTurning bars
- 4343
- BahnspeicherWeb storage
- 4444
- erster Trocknerfirst dryer
- 4545
- zweiter Trocknersecond dryer
- 5050
- RelativbewegungRelative movement
- 5151
- Antriebdrive
- 5252
- SchwenkachseSwivel axis
- 5353
- SchwenksystemSwivel system
- 5454
- LinearsystemLinear system
- 5555
- SchlittenSledge
- 5656
- Sensorsensor
- 5757
- Sensorsensor
- 6060
- MakulaturWaste
- 7171
- erste Tinte auf Schöndruckseitefirst ink on face side
- 7272
- zweite Tinte auf Schöndruckseitesecond ink on face side
- 7373
- dritte Tinte auf Schöndruckseitethird ink on face side
- 8181
- erste Tinte auf Widerdruckseitefirst ink on reverse side
- 8282
- zweite Tinte auf Widerdruckseitesecond ink on reverse side
- 8383
- dritte Tinte auf Widerdruckseitethird ink on reverse side
Claims (8)
- Device (1) for printing on a first and/or a second side (6a, 6b) of a web (6) of printing material,
characterized by
a printing device (10) with at least two printing modules (11, 12, 13), wherein the printing modules are inkjet printing heads and the printing fluid is ink, and with an effective range (20) that is associated with the printing device and in which printing fluid (30) is transmitted to the web by means of the printing modules,
a first guide element (40a) for guiding the web along at least a first part (20a) of the effective range,
a turning device (41) for turning the web, the turning device (41) disposed downstream of the first guide element in terms of the direction (7) of web travel, and
a second guide element (40b) for guiding the web along at least a second part (20b) of the effective range, the second guide element (40b) disposed downstream of the turning device in terms of the direction of web travel and different from the first guide element (40a),
wherein at least one printing module is disposed to be movable relative to at least one of the two guide elements to carry out a relative movement (50) and/or at least one of the two guide elements is disposed to be movable relative to at least one of the printing modules. - Device according to claim 1,
characterized in that the relative movement is a swivelling movement. - Device according to claim 2,
characterized in that the two guide elements are supported for movement about a common swivelling axis (52). - Device according to claim 3,
characterized in that the swivelling axis is disposed on a side of the guide elements that faces away from the printing modules. - Device according to claim 1,
characterized in that the relative movement is a linear movement essentially parallel to the direction of web travel in the effective range. - Device according to any one of the preceding claims,
characterized in that least one drive (51) is provided for generating the relative movement. - Device according to any one of the preceding claims,
characterized in that the effective range of the printing device is composed of the effective ranges (21, 22, 23) of the printing modules. - Device according to claim 7,
characterized in that the relative movement is a movement along at least the effective ranges of two printing modules.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016209280.4A DE102016209280A1 (en) | 2016-05-30 | 2016-05-30 | Device for printing a web of printing material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3251859A1 EP3251859A1 (en) | 2017-12-06 |
EP3251859B1 true EP3251859B1 (en) | 2020-09-02 |
Family
ID=58606097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17167458.3A Active EP3251859B1 (en) | 2016-05-30 | 2017-04-21 | Device for printing a web to be printed |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3251859B1 (en) |
CN (1) | CN107443928B (en) |
DE (1) | DE102016209280A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108819495B (en) * | 2018-04-02 | 2020-09-11 | 付灵 | Product management method and system in glass processing process and use method |
CN111976310B (en) * | 2020-08-28 | 2021-07-13 | 重庆久丰印务有限公司 | Full-automatic high-efficiency rotary curved surface digital ink-jet printer |
DE102021132015B3 (en) | 2021-12-06 | 2023-03-30 | Canon Production Printing Holding B.V. | Device for printing a recording medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659569A1 (en) * | 1993-12-21 | 1995-06-28 | Nipson S.A. | High speed printer and its uses |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59001716D1 (en) * | 1989-03-08 | 1993-07-15 | Siemens Nixdorf Inf Syst | PRINTING DEVICE WITH AT LEAST TWO, SPACELY SEPARATE PRINTING STATIONS. |
US5878320A (en) | 1997-09-30 | 1999-03-02 | Xerox Corporation | Continuous imaging of a continuous web substrate with a single print engine with a photoreceptor belt seam |
US6296405B1 (en) * | 2000-01-04 | 2001-10-02 | International Business Machines Corporation | Duplex check printer using a print mechanism pivoted between document paths |
JP4687031B2 (en) * | 2004-08-04 | 2011-05-25 | 富士ゼロックス株式会社 | Recording device |
JP2011143628A (en) * | 2010-01-15 | 2011-07-28 | Seiko Epson Corp | Printing method of recording paper and perfecting printer |
JP2011168383A (en) | 2010-02-22 | 2011-09-01 | Seiko Epson Corp | Target carrying device, and fluid injection device |
JP5751151B2 (en) * | 2011-12-02 | 2015-07-22 | ブラザー工業株式会社 | Image recording device |
US8885003B2 (en) * | 2012-06-26 | 2014-11-11 | Kodak Alaris Inc. | Duplex thermal printing system with pivotable diverter |
US8777399B2 (en) * | 2012-09-26 | 2014-07-15 | Xerox Corporation | System and method for first and second side process registration in a single print zone duplex web printer |
DE102014010904B3 (en) | 2014-07-24 | 2015-01-15 | Heidelberger Druckmaschinen Ag | Device for double-sided printing |
US9145007B1 (en) * | 2014-11-14 | 2015-09-29 | Eastman Kodak Company | Duplex printer with print belts for sheet and web printing |
DE102015205105B4 (en) * | 2015-03-20 | 2019-09-12 | Koenig & Bauer Ag | Roller printing machine |
-
2016
- 2016-05-30 DE DE102016209280.4A patent/DE102016209280A1/en not_active Withdrawn
-
2017
- 2017-04-21 EP EP17167458.3A patent/EP3251859B1/en active Active
- 2017-05-25 CN CN201710380717.7A patent/CN107443928B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659569A1 (en) * | 1993-12-21 | 1995-06-28 | Nipson S.A. | High speed printer and its uses |
Also Published As
Publication number | Publication date |
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CN107443928B (en) | 2020-08-18 |
EP3251859A1 (en) | 2017-12-06 |
DE102016209280A1 (en) | 2017-11-30 |
CN107443928A (en) | 2017-12-08 |
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