EP2977212A2 - Machine d'impression directe dotée de système d'alimentation en encre - Google Patents

Machine d'impression directe dotée de système d'alimentation en encre Download PDF

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Publication number
EP2977212A2
EP2977212A2 EP15172843.3A EP15172843A EP2977212A2 EP 2977212 A2 EP2977212 A2 EP 2977212A2 EP 15172843 A EP15172843 A EP 15172843A EP 2977212 A2 EP2977212 A2 EP 2977212A2
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EP
European Patent Office
Prior art keywords
printing
ink
ink tank
carousel
printing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15172843.3A
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German (de)
English (en)
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EP2977212B2 (fr
EP2977212B1 (fr
EP2977212A3 (fr
Inventor
Frank Winzinger
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Krones AG
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Krones AG
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Publication of EP2977212A3 publication Critical patent/EP2977212A3/fr
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Publication of EP2977212B1 publication Critical patent/EP2977212B1/fr
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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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • 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
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles

Definitions

  • the present invention describes a direct printing machine for printing on containers, such as bottles and a corresponding printing method.
  • a direct printing machine which has an ink supply, which is arranged in a stationary part of the direct printing machine.
  • This ink supply system includes a main tank in the stationary part of the machine. From this, for example, rotary distributor transfers ink to one or more printing modules.
  • the printing modules are located in the rotating part of the printing press.
  • the pressure modules can also be assigned auxiliary tanks.
  • the EP 2605909 B1 shows a direct printing machine with a plurality of printing modules, which are each arranged with a container recording on the carousel and allow printing of a container at different heights.
  • the print modules each require separate ink feeds.
  • the object to be solved of the invention is to provide a direct printing machine comprising an improved ink supply system.
  • the direct-printing machine is characterized in that an ink supply system comprising at least one ink tank and at least one supply line which can supply ink from the ink tank to at least one of the printing stations are arranged with the carousel rotating on the direct printing machine.
  • an ink supply system comprising at least one ink tank and at least one supply line which can supply ink from the ink tank to at least one of the printing stations are arranged with the carousel rotating on the direct printing machine.
  • each printing station comprises a printing segment, which contains at least one printing module and is detachably connected to the station, wherein in the installed state there is a connection of the printing module to a supply line. An exchange of pressure segments can be easily ensured.
  • Each printing station on the carousel or each printing segment comprises as an embodiment of the printing module in particular at least one digitally controlled inkjet printhead.
  • each printing station comprises a container receptacle, wherein the container receptacle and the printing segment are formed as separate components or as a component.
  • the replacement of the pressure segments can be facilitated because the container recordings do not need to be replaced at the same time.
  • the printing segment comprises a plurality of printing modules, which are arranged concentrically around the longitudinal axis of a container located in the printing station.
  • the concentric arrangement allows a simple ink supply via corresponding supply lines, for example from above.
  • each printing module is associated with a shield, which can be moved between a rest position and a shielding position in which the shield shields pressure nozzles of the printing module.
  • the shielding of the individual printing modules protects the printing nozzles from contamination by ink from other printing modules in the environment and can be used, for example, in the application of UV light to cure ink on the container to prevent the ink from drying on the printing nozzles.
  • the direct printing machine is characterized in that the ink supply system further comprises at least one controllable flow pump for pumping ink from the ink tank to the printing stations and at least one return pump for pumping ink from the printing stations into the ink tank.
  • the ink supply system further comprises at least one controllable flow pump for pumping ink from the ink tank to the printing stations and at least one return pump for pumping ink from the printing stations into the ink tank.
  • the supply line can comprise at least one main line for transporting ink from the ink tank, which extends along at least part of the circumference of the carousel, one or more secondary lines lead from the main line to the printing stations and at least one discharge line from the printing stations to the main line lead, wherein ink via a first connection of the main line to the ink tank discharged from the ink tank and can be introduced via a second connection of the main line in the ink tank.
  • the number of pumps required can be reduced since it suffices if a corresponding pressure is produced in the intended main line.
  • ink can be saved as unused ink can be pumped back into the ink tank.
  • a plurality of ink tanks are provided, wherein each ink tank are assigned separate supply lines, wherein the ink tanks are arranged either concentrically about an axis of rotation of the carousel or one above the other parallel to the axis of rotation of the carousel or not concentric distributed.
  • each tank is preferably assigned to a specific ink color. The inks available in the tanks may have different colors in pairs, but several tanks or a subset of the tanks may contain the same color.
  • the ink supply system may be arranged in the carousel.
  • the arrangement of the ink supply system directly in the carousel has the advantage that the supply paths can be chosen as short as possible.
  • a refill connection is arranged between two adjacent printing stations, which is connected to the ink tank. Refilling the ink tanks or the ink tank can thus be done by stopping the direct printing machine in a manner suitable for the operator Position to reach the refill port are guaranteed.
  • the refill port can be arranged at a height between 0.1 and 2.5 m and preferably between 0.5 and 2 m above the ground on which the machine is installed.
  • multiple refill ports may also be present, each of which is associated with a tank.
  • the individual refill connections can be arranged at the same position in the circumferential direction of the machine, for example at different heights, or alternatively between respectively different stations at the same height.
  • the arrangement at the same position in the circumferential direction means that the refill connections are all arranged between exactly two adjacent printing stations.
  • the refill connections can be arranged, for example, as "bundles" between the printing stations or, for example, be arranged on a straight line parallel to the rotational axis of the carousel at a distance from one another.
  • each printing segment or each printing station comprises a rotary drive, which is coupled to the receptacle of the container. With the drive, the containers are rotated during printing relative to the carousel, in particular about its longitudinal axis, to produce a relative movement of the print head to the container.
  • the machine runs continuously during operation. In certain cases, however, it can also be operated intermittently.
  • only one color is provided in a machine and a plurality of similar machines in the transport direction of the container are successively set up to successively apply different colors to the container.
  • a stationary tank with a connection which can only be connected to it at standstill of the machine.
  • This can be designed so that it has a coupling which can be automatically docked via drives on the refill or connections.
  • a pump which is activated for refilling.
  • the machine rotates in one embodiment about a vertically oriented axis of rotation which intersects the center of the earth.
  • an additional auxiliary tank on the rotating part of the machine, which is constantly fed by a co-rotating main tank, in which the invention is refilled.
  • the auxiliary tank can be at a certain height and its level can always be kept constant by a control using a sensor. From the auxiliary tank, the ink passes in particular to the previously mentioned flow pump.
  • the inventive method for printing on containers such as bottles is characterized in that an ink supply system co-rotating with the carousel supplies ink from an ink tank to at least one of the printing stations via a feed line.
  • This method allows a much more direct supply of ink to the printing stations, whereby long transport paths of the printing ink can be minimized.
  • the method is characterized in that ink is pumped from the ink tank into the supply line via a controllable feed pump and pumped back into the ink tank via a return pump ink, the pump power of the return pump is at any time higher than the pump line of the flow pump, so that a negative pressure is applied to printing nozzles of the printing station.
  • the pumping capacity of the feed pump is controlled as a function of the fill level of the ink tank and / or as a function of the rotational speed of the carousel.
  • a desired level of pressure in the lines for printing can thus be set at any time as a function of the operating parameters.
  • ink can be supplied to the ink tank via a refill port connected thereto, the refill port being located between two adjacent printing stations.
  • the carousel when refilling of the ink tank is necessary, the carousel can be stopped to a standstill in which the refill port is accessible from outside the direct printing machine. Downtime for refilling ink can be minimized and the total throughput or overall performance of the machine can be increased.
  • the machine comprises at least one conveyor which inserts the containers into the machine and one which ejects the printed containers from the machine.
  • the rotational position is selected so that the refill port stops at a different position in the circumferential direction than the two conveyors.
  • ink is transported from the ink tank along a main line and fed via sub-lines to individual printing stations and passed via discharges from the printing stations in the main line, the ink via a first port
  • the main line from the ink tank is piped into the main line and routed via a second connection of the main line from the main line into the ink tank.
  • only one flow and one return pump are required, which produce a desired pressure level in the main line, wherein the supply of ink to the individual pressure stations via the secondary lines, which allows a targeted pressure supply.
  • a level sensor is arranged in each tank of the machine, with which the level of the tank is measured.
  • the operator can be displayed (for example, on a touch screen of the machine), how much ink is still in the tank, or how long the machine can still be operated with the current filling at its current performance. With a certain remaining production time, a warning signal can be issued that the operator can prepare for refilling the tank. In order not to eject unprinted containers, the machine may automatically stop when the tank becomes empty.
  • the containers to be printed are in particular PET bottles.
  • residues of ink from the tank or tanks are first removed via a drain connection (and possibly reused after cleaning) and then filled into the refill connection or into the refill connections a cleaning agent, which of the already existing pumps (flow pump and return pump For example) is passed through the ink supply system over a period of time.
  • a cleaning agent which of the already existing pumps (flow pump and return pump For example) is passed through the ink supply system over a period of time.
  • the particular liquid cleaning agent is removed via a or the drain port and refilled ink.
  • cleaning may be performed at regular intervals or, for example, when an operator refills a wrong ink color in a tank. To avoid the latter, a system may be present at the refill ports which avoids incorrect refilling.
  • adapters on the refill connection and respectively refill cartridges adapted to the color per color, which are adapted to one another via an individual geometry of the connection opening or the spout openings of the cartridges.
  • the method of cleaning and / or the system at the refill ports may additionally be provided on the machine, but it may also be an independent invention as described above.
  • Fig. 1 shows a direct printing machine 100 according to an embodiment of the invention.
  • the direct printing machine is designed as a rotary machine with a carousel 101.
  • the carousel 101 is disposed on a fixed portion 120 of the container handling machine and includes one or more printing stations 110 around the circumference of the entire carousel that can print on a container.
  • the printing stations comprise at least one printing segment 111, in which one or more printing modules can be arranged.
  • the spatial arrangement of the printing modules in the printing segment is arbitrary.
  • the printing modules can be arranged at a constant distance about a introduced into the printing station bottle or container 130 introduced, for example, on a semicircle or in parallel to the axis of rotation planes extending multiple printing modules can be arranged one above the other. Also combinations of it are possible.
  • an ink supply system 103 is provided.
  • This ink supply system is arranged with the carousel 101 co-rotating, which need not necessarily be located directly in the carousel.
  • the ink supply system comprises at least one ink tank 102 in which the ink necessary for printing on the containers is held and one or more supply lines 131 to 13n, each of which is connected to a respective printing segment or printing module of a printing segment. It can also be provided that more than one ink tank is provided.
  • ink tanks for example, one above the other
  • ink tanks can be arranged concentrically parallel to the axis of rotation or with the carousel co-rotating non-concentric distributed.
  • the ink tanks are preferably mounted directly on the carousel, so that no additional space in the standing part 120 of the printing machine 100 must be kept free to allow rotation of the ink tanks.
  • the tanks may be designed as ring lines.
  • a plurality of rotary machines or carousels are provided, each of which can realize a monochrome printing.
  • the containers can then be transferred from one carousel to the next and in each carousel a corresponding monochrome print image can be applied.
  • a central carousel be provided, which allows both the feeding of the container and the removal of the containers to and from the respective carousels.
  • the individual carousels carrying out the printing then have an ink tank and a corresponding ink supply system and can be used according to the method described in US Pat Fig. 1 be shown carousel.
  • several carousels which in each case completely outfit the containers with all the colors, can be supplied by a central distributor.
  • Fig. 2a + b show plan views of a direct printing machine 100 according to the invention, wherein the lines to the individual pressure segments or pressure modules 211-218 are also shown.
  • a central tank 102 is provided, which is arranged concentrically around the rotation axis R. It is understood that the statements according to Fig. 2a and 2b also on a plurality of tanks, which are either arranged one above the other parallel to the axis of rotation concentrically or which are distributed non-concentrically on the carousel, can be transmitted.
  • the shape of the ink tank is in principle arbitrary. Thus, as shown, cylindrical, concentric with the axis of rotation R of the carousel arranged tanks are provided.
  • ink tanks can also be adapted to the rest of the structure of the carousel to leave enough space for other assemblies, such as control or cooling. It can also be provided that more than one ink tank per color is provided.
  • auxiliary tanks may be provided co-rotating in the rotating part of the direct printing machine with the carousel. These can provide a temporary supply of ink if the main tanks are empty or nearly empty to reduce downtime.
  • a main line 205 is provided, through which ink can be conveyed out of the ink tank 102.
  • the advance pump 281 pumps ink from the tank 102 and carries it with a certain pressure through the main line 205.
  • On the main line 205th one or more sub-lines 251-258 are arranged leading from the main line to the pressure segments 211-218.
  • each secondary line comprises two separate lines, not shown, from which an ink from the main line leads to the printing module and the other ink from the printing module leads back into the main line.
  • the first line 257 passed through in the series may have a larger diameter than the last line 256.
  • the main line is broken at this point and leads directly to the print head - in other words not the secondary lines, but the main line leads directly to the printheads.
  • main lines 250 and 260 are provided, which can supply a certain angular section of the carousel 101 or arranged in this area printing stations or printing segments with printing ink from the ink tank.
  • the structure of the individual main lines and secondary lines 250 and 251-253 or 260 and 261-263 is analogous to those in Fig. 2a have been described.
  • a shorter choice of main lines may favor the creation of certain pressure conditions in the lines.
  • a respective flow pump 281 or 283 and a return pump 282 or 284 are respectively provided on the respective main lines 250 and 260.
  • Fig. 1 an embodiment in which lead separate leads from the ink tank to each individual printing segment of a printing station.
  • a flow and a return pump are attached to the respective supply lines, so that on the "way out” ink can be conveyed from the ink tank to the respective printing station and on the "return” ink from the printing station or the respective printing module or printing segment can be transported back into the ink tank.
  • a pressure difference between the flow pump and the return pump exists such that at least a slight negative pressure is applied to the pressure nozzles of each pressure module. This is achieved by the pump power of the return pump or the return pumps is higher than the pumping line of the flow pumps at any time. Thus, unwanted dripping of ink from the individual printing nozzles, which could lead to sticking of the printing nozzles, can be avoided.
  • the pump power of the flow pump is adjustable, for example, to ensure a constant pressure in the main and secondary lines. For this purpose, the pumping power of the flow pump can be adjusted so that it can be set as a function of, for example, the rotational speed of the carousel and / or in dependence on the fill level of the respective ink tank.
  • the line leading from the ink tank engages the underside of the ink tank and the line leading back into the ink tank is arranged on the top side of the ink tank.
  • the underside of the ink tank is the side that is closer to the center of the earth or to the surface or the floor on which the direct printing press is placed.
  • the entire ink supply system is arranged directly in the carousel.
  • Fig. 3 shows an embodiment of a printing station 110 of the direct printing machine 100, as shown in FIG Fig. 1 is shown.
  • four printing modules 331-334 are associated with each printing segment.
  • the printing segment 330 and the corresponding printing modules 331-334 may be formed to print the container surface in different colors.
  • the individual printing modules are each connected via lines 311-314 with pairs of different ink tanks, so that each printing module applies a different color from the other printing modules on the surface of the container.
  • each printing module can apply the same color, for example black or blue, to the surface of the container.
  • each printing module for the application of the printing ink in a different area from the rest of the printing module be provided or each printing module can cause the application of a specific motif.
  • a centering device is provided which comprises a centering bell 371 and a stand or turntable 372 associated with this centering bell.
  • the container shown in dashed lines can be clamped and fixed and optionally rotated about its longitudinal axis or, for example, moved up and down parallel to its longitudinal axis.
  • the rotary drive can also be moved into the centering bell 371 to dispense with the turntable 372 and the lower receptacle and to receive the container suspended in the centering (for example, via a mounted on the centering bracket, which at a further part of the mouth region of Container (eg support ring) attacks).
  • the arrangement of the pressure segment 330 of the individual printing modules 331-334 is provided independently of the centering device, so that these are two separate assemblies.
  • the printing segment 330 as a whole or each of the printing modules 331-334 is removably provided in the printing station 110.
  • quick-change connections to the lines 311-314 can facilitate uncomplicated replacement or removal and insertion of printing modules 331-334.
  • self-sealing couplings can be provided on each line, which self-close upon release, so that no ink can run out.
  • Fig. 4 shows another embodiment of a printing segment 430.
  • the printing segment 430 is provided as a kind of frame on which the printing modules 431-433 are arranged.
  • This frame can be a frame in which the printing modules can be clicked or screwed, for example.
  • the entire pressure segment via connections 481 and 482, such as plug or screw, connected to the carousel 101, so that it can be removed as a whole from the carousel.
  • connections 481 and 482 such as plug or screw
  • the individual printing modules 431-433 are connected to the ink tank 102 via the respective leads 411-413.
  • the ink tank is subdivided into three separate individual tanks 421-423 which are each connected to only one supply line 411-413.
  • a derivative can be integrated - depending on whether a vacuum on the printhead 411-413 is needed.
  • the ink tanks are arranged concentrically in this embodiment, one above the other parallel to the rotational axis of the carousel. While they seemingly similar in the presentation Having sizes, of course, depending on the necessary ink requirements for the individual printing modules, a respectively adapted ink tank can be used with a corresponding filling volume.
  • the printing modules 431-433 are arranged closer to the rotation axis R of the carousel at the pressure segment 430 than the container 490 clamped in the centering device, in another embodiment it is also conceivable that the pressure modules on the opposite side of the container 490, ie further away from the rotational axis of the carousel than the clamped container. As a result, more space is gained in the direction of rotation of the carousel for the individual printing modules and supply lines, so that, for example, more printing modules can be arranged in each individual printing segment.
  • Fig. 5 shows a further embodiment of a direct printing machine 500 according to the invention.
  • the ink tanks 502 and 503 are arranged concentrically and one above the other with respect to the rotational axis R of the carousel.
  • 500 refill connections are arranged on the outer periphery of the direct printing machine. This Nach Shellan say can be arranged for example in the stationary part of the direct printing machine and lead via a corresponding line and a rotary distributor up to the mitbewegten ink tanks.
  • FIG. 5 illustrated embodiment shows two refill ports 520 and 530, which are arranged together between the two printing stations 110 and 110 '. It is of course also conceivable that more than one refill port is provided for one and the same ink tank, for example 502 or 503, the corresponding refill connections then being able to be evenly distributed on the circumference of the carousel of the direct printing machine 500, for example. Since such machines are usually not accessible from all sides, it can be ensured that at least one of the ports can be reached at refill of the direct printing machine after only a slight rotation (if any) of the carousel for refilling.
  • the refill connections comes to a stop in the region of an opening of a panel of the direct printing machine 100, so that an operator can refill the ink tanks through this opening.
  • the ports 520 and 521 are provided as couplings in which a hose or a cartridge with matching counterpart can be docked. In the simplest case, however, they are funnel-shaped connections into which the ink can be poured from above (not shown).
  • Fig. 6a and 6b show further advantageous embodiments of the individual printing stations or printing segments.
  • a pressure module of a pressure segment is shown.
  • the printing module 111 comprises a plurality of printing nozzles 611, which can print on a container 130. If several printing modules are used in a printing segment of a printing station, there is a risk that despite the applied negative pressure by the return pump, as in Fig. 2a and 2b described unintentionally when printing the container 130 drops of ink or resulting mist on opposite or adjacent pressure modules meet, for example by the wind during rapid rotation of the carousel.
  • shields 690 can be provided for each printing module, which can be moved in front of the relevant printing module 111 and in particular in front of the printing nozzles 611 when the printing module is not in operation.
  • the method of the shield 690 can be carried out laterally from the printing module 111 to the printing nozzles 611 (in particular in the horizontal direction) or the shield 690 can be positioned in the non-shielding state above or below the printing module and then moved in front of the printing nozzles 611.
  • the latter embodiment has the advantage that no space is left for the shielding in the printing plane must be so that several printing modules can be arranged side by side.
  • Fig. 6b shows an alternative embodiment, wherein here no separate shield for each printing module is provided but the container is inserted into a shield 695.
  • This shield may, for example, as shown, be designed as a cylinder and should be rotatable at least about an axis parallel to the longitudinal axis L of the container 130.
  • the shield 695 includes an opening 696 that is at least large enough for ink jets of a print module 111 'to fully penetrate the opening and apply a print image to the container. For this purpose, when the printing module 111 'is to print on the container, the shield 695 is rotated so that the opening 696 points in the direction of the printing nozzles 611.
  • the shield 695 must be larger than the container 130, so the splash of ink drops, which could possibly meet other printing modules 111, can be avoided.
  • a UV light source placed in the same plane is shielded. This effect can be further supported by the fact that the printing module 111 'is moved closer to the opening 690 and thus to the container surface during the printing process, so that optionally the pressure nozzle row is even within the imaginary full cylinder jacket of the shield 695, whereby accidental spraying of Ink can be completely or almost completely suppressed on other printing modules.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP15172843.3A 2014-07-25 2015-06-19 Machine d'impression directe dotée de système d'alimentation en encre Active EP2977212B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014110520.6A DE102014110520A1 (de) 2014-07-25 2014-07-25 Direktdruckmaschine mit Tintenversorgungssystem

Publications (4)

Publication Number Publication Date
EP2977212A2 true EP2977212A2 (fr) 2016-01-27
EP2977212A3 EP2977212A3 (fr) 2016-07-13
EP2977212B1 EP2977212B1 (fr) 2019-01-16
EP2977212B2 EP2977212B2 (fr) 2023-02-22

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EP (1) EP2977212B2 (fr)
CN (1) CN105291597A (fr)
DE (1) DE102014110520A1 (fr)

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CN109501476A (zh) * 2018-12-21 2019-03-22 苏州斯莱克精密设备股份有限公司 一种数码印罐机打印精度控制方法以及数码印罐机

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DE102016226166A1 (de) * 2016-12-23 2018-06-28 Krones Ag Verfahren und Direktdruckmaschine zur Bedruckung von Behältern aus unterschiedlichen Materialtypen im Direktdruck
DE102017215475A1 (de) * 2017-09-04 2019-03-07 Krones Ag Direktdruckmaschine und -verfahren zur Bedruckung von Behältern mit einem Direktdruck
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IT201600098327A1 (it) * 2016-09-30 2018-03-30 Omso Officina Macchine Per Stampa Su Oggetti Spa Macchina per la stampa a getto d'inchiostro di oggetti tridimensionali, in particolare di oggetti tubolari
WO2018060823A1 (fr) * 2016-09-30 2018-04-05 Omso – Officina Macchine Per Stampa Su Oggetti – Società Per Azioni Machine pour l'impression par jet d'encre d'objets tridimensionnels, en particulier d'objets tubulaires
US10864750B2 (en) 2016-09-30 2020-12-15 Omso—Officina Macchine Per Stampa Su Oggetti—Societa' Per Azioni Machine for the ink-jet printing of three-dimensional objects, tubular objects in particular
CN109501476A (zh) * 2018-12-21 2019-03-22 苏州斯莱克精密设备股份有限公司 一种数码印罐机打印精度控制方法以及数码印罐机

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EP2977212B2 (fr) 2023-02-22
EP2977212B1 (fr) 2019-01-16
EP2977212A3 (fr) 2016-07-13
DE102014110520A1 (de) 2016-01-28

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