EP4178805A1 - Dispositif et procédé pour aligner des particules magnétiques ou magnétisables, et machine pour générer des éléments d'image optiquement variables - Google Patents

Dispositif et procédé pour aligner des particules magnétiques ou magnétisables, et machine pour générer des éléments d'image optiquement variables

Info

Publication number
EP4178805A1
EP4178805A1 EP21765626.3A EP21765626A EP4178805A1 EP 4178805 A1 EP4178805 A1 EP 4178805A1 EP 21765626 A EP21765626 A EP 21765626A EP 4178805 A1 EP4178805 A1 EP 4178805A1
Authority
EP
European Patent Office
Prior art keywords
alignment device
magnets
transport path
substrate
particles
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
EP21765626.3A
Other languages
German (de)
English (en)
Other versions
EP4178805B1 (fr
Inventor
Edwin Kreps
Emmanuel THONY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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
Priority claimed from DE102020125728.7A external-priority patent/DE102020125728B3/de
Priority claimed from DE102020125727.9A external-priority patent/DE102020125727B3/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP4178805A1 publication Critical patent/EP4178805A1/fr
Application granted granted Critical
Publication of EP4178805B1 publication Critical patent/EP4178805B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
    • B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/0024—Frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/193—Transfer cylinders; Offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/001—Apparatus or machines for carrying out printing operations combined with other operations with means for coating or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/002—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink
    • B41F19/005—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink with means for applying metallic, conductive or chargeable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B41F23/0409—Ultraviolet dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/045—Drying sheets, e.g. between two printing stations by radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/045—Drying sheets, e.g. between two printing stations by radiation
    • B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0009—Central control units

Definitions

  • the invention relates to a device and a method for aligning magnetic or magnetizable particles and a machine for generating optically variable picture elements according to claim 1 or 19 or 21.
  • EP 2 845 732 B1 discloses a printing machine with a screen printing unit and a device for aligning magnetic or magnetizable particles contained in the printing ink or the paint, the device having a cylinder with a plurality of elements on the circumference that produce a magnetic field and a Transport path directed dryer to a point where the substrate has not yet left the cylinder.
  • US Pat. No. 7,047,883 B2 discloses a first embodiment of a magnetically effective device, which can be provided in an inline arrangement to a printing device and comprises a plurality of permanent magnets next to one another in the printing material path. Magnetic or magnetizable particles contained in the printing ink can be aligned by the permanent magnets, while the printing material is guided past the magnets.
  • such magnets are provided on a cylinder casing of a cylinder, over which a printing material web printed with printing ink containing magnetic or magnetizable particles is guided.
  • EP 3 178 569 A1 discloses a device for producing layers with an optical effect, two cylinders comprising magnets on their cylinder jacket being provided one behind the other in the printing material path, over which one with printed printing material web is guided containing printing ink containing magnetic or magnetizable particles. Using a dryer and a mask partially covering the printed areas, a first partial area can first be oriented and dried before another partial area can be aligned and dried by the magnets of the second cylinder.
  • WO 2015/086257 A1 relates to a method for producing optically variable effect layers, in which at least some of the platelet-shaped magnetic or magnetizable pigment particles are biaxially aligned in one step.
  • DE 10 2018 127 936 A1 relates to a printing machine with a first and a second magnetic cylinder arranged downstream, which comprise first and second magnetic elements in the area of their lateral surface.
  • First image elements can be aligned by these first magnetic elements and second image elements that at least overlap with the first image elements can be aligned by the second magnetic elements.
  • DE 102018205 883 A1 discloses a machine for aligning magnetic particles in previously applied printing ink, with two magnetic cylinders being arranged one behind the other in one embodiment and even three magnetic cylinders being arranged one behind the other in another embodiment.
  • two magnetic cylinders directed onto the same side of the substrate, two different print areas can be aligned with different patterns by the two magnetic cylinders. After a first area has been aligned, this area is dried before the other area is aligned by means of the second magnetic cylinder.
  • DE 102010 041 398 A1 proposes aligning magnetic particles contained in a printing ink by means of an effective element, to which a ferromagnetic property was or is applied offline in a first embodiment and online in a second embodiment by an external magnetic field.
  • an effecting element is clamped onto a forme, plate, rubber or printing cylinder by outside the machine.
  • magnetization representing a magnetic image is generated entirely by electromagnets directed onto the substrate path over a cylinder.
  • several electromagnets are provided in the circumferential direction, through which the corresponding magnetizing effect is successively repeated as the printing material runs through.
  • a thin, magnetizable plate or film can support the magnetization effect emanating from the electromagnets, in that the dynamic magnetization is reflected there and intensifies the dynamic effect.
  • the object of the invention is to provide a device and a method for aligning magnetic or magnetizable particles and a machine for generating optically variable picture elements.
  • the particles are present in the ink matrix in a more or less disordered manner.
  • image information e.g. B. an alphanumeric character, an image motif or pattern
  • imaging or - generating orientation some of the particles are targeted in such a way aligned so that the desired optical effect is produced when viewing the printed image. This is done by means of an alignment device that introduces corresponding image information, which is also briefly referred to here as “imaging” or “image-generating”.
  • particles applied to the printing material via the printing ink - e.g. B. at least in a surface area relevant to the image or motif to be displayed - before the interaction with the alignment device provided for imaging or generating alignment or upstream of the same and/or at least at a point in time or in a period of time during the interaction with the alignment device to be imaged Alignment provided aligning with a further, a pre-orientation or simultaneous orientation serving aligning together.
  • Another alignment device used for pre-orientation causes at least the surface areas directly adjacent to the motif or pattern to have a more uniform appearance in the finished product, in that the particles present there are not randomly oriented and thus provide a low-contrast background compared to the image motif or pattern.
  • standardized orientation of the particles at least in the vicinity of the imaging surface areas a higher contrast between the image motif or pattern and the background can be achieved.
  • a spatial effect can even be achieved through the superimposition with a corresponding magnetic field design.
  • the alignment device that generates images or introduces image information is designed and set up in such a way that the magnets of the alignment device that serve to provide image alignment and the printing material printed with the printing ink containing the particles are at least on a section of the transport path move synchronously with one another, while one or the other additional alignment device is operationally fixed to the transport path, i.e. the magnets of one and/or the other additional alignment device for pre-orientation or simultaneous orientation are operationally fixed to the frame or remain stationary during operation, ie , do not move synchronously with the printing material, in contrast to the alignment device that provides or generates the image.
  • the imaging alignment device is preferably designed as a rotatable cylinder, e.g. B. magnetic cylinder, which carries the imaging alignment serving magnetic elements on its circumference and supports and/or transports the printing material on its handling on at least one rotary angle segment.
  • a particularly advantageous device for aligning magnetic or magnetizable particles contained in a coating agent applied to one side of a web or sheet-shaped substrate comprises a first aligning device which is arranged in the transport path of the substrate to be conveyed and in the region of it facing the transport path side has a plurality of magnets in order to align at least part of the particles contained in the coating agent in a defined manner in a surface area containing coating agent, the magnets serving for alignment of the first aligning device and the substrate to which the coating agent containing the particles is applied being located at least on one Move section of the transport path synchronously to each other.
  • the first aligning device is assigned at least one further aligning device which is operationally fixed to the frame on the transport path and has a plurality of magnets which remain stationary in the device during operation, in front of or opposite.
  • one of the first alignment devices in the transport path of the substrate to be conveyed is arranged upstream of the further alignment device
  • Pre-orientation with a plurality of magnets is provided in such a way that a pre-orientation of the particles can be effected by means of these surface areas at least adjacent to the sub-areas relating to the image information or comprising the image information to be generated, and/or a further alignment device for simultaneous orientation with one or more magnets, which is arranged on the transport path on the opposite side of the transport path from the first alignment device in such a way that the same and/or mutually adjacent surface areas of a surface area comprising the image information to be generated interact simultaneously with the first and with the further alignment device at at least one point in the transport path.
  • an alignment device used for pre-orientation comprises magnets in such a way that these surface areas, at least adjacent to the sub-areas relating to the image information or comprising the image information to be generated - in particular continuously over the coating thickness, i. H. the thickness of the coating agent applied, or at least in the visible surface layer - a homogeneous pre-orientation of the or a predominant number of the particles can be effected at least with regard to the course of a longitudinal axis of the particles projected into the substrate plane.
  • the magnets of the further alignment device arranged upstream of the first alignment device are preferably designed and oriented in such a way that in a respective surface area comprising the image information to be generated, the or a predominant number of the particles, in particular continuously across the coating thickness or at least in the visible surface layer - in particular both with regard to their axis running in the longitudinal direction as well as in the width direction - are aligned biaxially parallel to one another or homogeneously in another way, so that a homogeneous optical impression is created over this surface area.
  • the above-mentioned homogeneous pre-orientation or alignment can be both the ideal case in which all particles of the surface area under consideration - in particular in the entire coating thickness or at least in the visible surface layer - are or are homogeneously pre-oriented or aligned in the above-mentioned manner, but also cases of a possibly less ideal but nevertheless advantageous embodiment, in which there is almost complete, ie at least ninety percent, or at least predominantly, ie more than 50%, homogeneous pre-orientation or alignment of the previously randomly oriented particles.
  • the observed surface area with a portion of randomly oriented but a predominant portion of homogeneously oriented particles forms a greater contrast for image information to be introduced into this surface than completely randomly oriented particles.
  • a printing unit is provided in the printing material path between a printing material master and a product receptacle, with an imaging cylinder preferably designed as a forme cylinder with a large number of imaging print subjects or groups of imaging print subjects on the circumference, which on a circumferential length corresponding to the print image length in several columns spaced equidistantly from one another transversely to the transport direction and are arranged on a cylinder width corresponding to the width of the printed image in several rows spaced equidistantly from one another in the transport direction, and wherein the further alignment device in question comprises a number of magnets corresponding to the number of columns, which are arranged in the transport path in this way, so that the print subjects or groups of imaging print subjects along the transport path are at least partially aligned with the lateral position of the magnets of the further out alignment equipment
  • a first aligning device comprising magnets is used in a surface area containing coating agent at least some of the particles contained in the coating agent are aligned in a defined manner to generate image information, while the magnets of the first alignment device used for alignment and the substrate to which the coating agent containing the particles is applied move synchronously with one another at least on a section of the transport path.
  • magnetic particles at least in a surface area containing the image information to be generated, are aligned parallel to one another or homogeneously in another way before reaching the first alignment device by a further alignment device, at least with regard to the course of a longitudinal axis of the non-spherical particles viewed in the projection onto the substrate plane and/ or during the interaction with the first aligning device simultaneously subjected to magnetic fields by a further aligning device located opposite the first aligning device on the transport path in order to align it.
  • FIG. 1 shows an exemplary embodiment of a machine for generating optically variable picture elements on a substrate
  • Fig. 2 shows a schematic representation of a substrate printed in printing elements with an optically variable coating medium, with on the left side, Fig. 2 a), an alignment with only the imaging device, ie the alignment device that introduces the image information, and on the right side, Fig. 2 legs alignment using at least one further alignment effecting pre-orientation and/or simultaneous orientation;
  • FIG. 3 shows an enlarged representation of the printing unit from FIG. 1 ;
  • FIG. 4 shows an enlarged view of the device for aligning magnetic or magnetizable particles in a first embodiment from FIG. 1 ;
  • FIG. 5 shows an enlarged view of the device for aligning magnetic or magnetizable particles in a second embodiment with two magnetic cylinders
  • FIG. 6 shows an oblique view of an embodiment for a magnetic cylinder
  • FIG. 7 shows a detailed view of an alignment of magnetic or magnetizable particles, as an example in an embodiment according to FIG. 4;
  • FIG. 8 shows an oblique view of an alignment device provided in the machine for the pre-orientation of magnetic particles, equipped by way of example with magnets and with filler pieces and with handles for removing such magnets or filler pieces;
  • FIG. 9 is an isolated view of the alignment fixture of FIG. 8 fully populated with magnets
  • Fig. 10 is a perspective enlarged view of Fig. 9;
  • 11 shows a detailed representation of an embodiment of the detachable attachment of a magnet to a support frame of the alignment device; 12 shows an oblique view of an alignment device provided in the machine for the simultaneous orientation of particles in the operating position (continuous lines) and in the set-up or inactive position (dash-dotted representation);
  • FIG. 13 shows a detailed view of a magnet from the depiction of a magnet in a pivoted position.
  • a machine 01 e.g. B. printing machine 01, in particular security printing machine 01, for generating optically variable image elements 03 on a substrate 02, z. g. a web or sheet of printing material 02, comprises an application device 04, e.g. B. a printing unit 04, through which optically variable coating means 06, z. B. optically variable printing ink 06 or paint 06, at least one application point, z. B. pressure point, on at least a first side of the substrate 02, z. g.
  • an application device 04 e.g. B. a printing unit 04, through which optically variable coating means 06, z. B. optically variable printing ink 06 or paint 06, at least one application point, z. B. pressure point, on at least a first side of the substrate 02, z. g.
  • This device 07 is also referred to below as the alignment device 07 for short or, since it effects imaging for the optically variable pattern or motif through a defined alignment of the particles P, also as an imaging alignment device 07.
  • Application of coating material 06 containing particles P and subsequent image-forming alignment is possible, e.g. B. in Fig. 2 on the left side (Fig. 2 a)) shown schematically based on the representation of the number I on the alignment of formerly randomly oriented particles P.
  • the Roman numeral I designates a state I in which the coating medium 06 has been applied and is present in a random orientation
  • the numeral III designates a state III in which an imaging alignment has taken place.
  • Print image elements 08 made of variable coating medium 06 applied to the substrate 02 can correspond in size and position to the optically variable image elements 03 to be generated or possibly be larger than these, and several copies 09 can even extend over the surface. In the case of larger printed image elements 08, for example, an optically variable image element 03 is not generated by alignment on the entire surface coated with optically variable coating medium 06.
  • the particles P responsible for the optical variability are here in the coating agent 06, e.g. B. the printing ink 06 or the paint 06, magnetic or magnetizable, non-spherical particles P, z. B. pigment particles P, also referred to below as magnetic flakes. They preferably have a non-spherical, flat shape with a longitudinal axis running in the direction of longest extension, an axis perpendicular thereto in the direction of width and a thickness running on both axes and which is smaller than the length and width.
  • the machine 01 is preferably used to produce panels 09, e.g. B. Securities 09, in particular banknotes 09, or intermediate products of such securities 09, z. B. Printed images of several such securities 09 containing printing material sections.
  • the substrate 02 e.g. B. substrate 02, can by - z. B. cellulose or preferably cotton-fiber-based paper, be formed by plastic polymer or by a hybrid product thereof.
  • Application device 04 may be uncoated or already coated, it may be unprinted or already printed once or several times or may have been mechanically processed in some other way.
  • a plurality of blanks 09 e.g. B. banknotes 09 to be produced, arranged in a row next to each other and several such rows of blanks 09 or their printed image one behind the other in the transport direction T or to be arranged in the course of the processing of the substrate 02 (indicated e.g. in Fig. 2).
  • the machine 01 embodied as a printing press 01 can, in principle, comprise one or more printing units 04 with one or more printing units of any printing process.
  • a printing unit 04 with at least one printing unit 11 that works according to the flexographic printing method or preferably according to the screen printing method; 12, through which the optically variable coating medium 06 is or can be applied to a first side of the printing material 02.
  • a greater layer thickness can be applied compared to other printing methods.
  • the expression “first side” of the substrate 02 or printing material 02 is chosen arbitrarily and is intended to designate that side of the printing material 02 on which the optically variable coating medium 06 is or was or can be applied.
  • the printing press 01 comprises a printing substrate template 13, e.g. B. a roll unwinder 13 or preferably a sheet feeder 13, from which the z. g. web-shaped or preferably sheet-shaped printing material 02 - possibly via further printing or processing units - of the printing unit 04 applying the optically variable coating medium 06, e.g. B. flexographic or in particular screen printing unit 04, with at least one printing unit 11; 12, e.g. B. flexographic or in particular screen printing unit 11; 12, is or can be supplied.
  • two screen printing units 11; 12 are provided, which are preferably combined in the same printing unit 04 and between a respective forme cylinder 14; 16, e.g. B.
  • a screen printing cylinder 14; 16, and a common impression cylinder 17 form two printing points for the same side, here the first side, of the printing material 02 (see, e.g., FIG. 4).
  • coating agent 06 can also be applied in thicker layers.
  • a drying chamber directed at the first side of a printing substrate 02 to be conveyed through printing unit 04 can and/or curing device 18, e.g. B. a UV dryer 18 may be provided. It can with only one or both of the screen printing units 11; 12 optically variable coating agent 06 can be applied or applied.
  • the printing unit 11 ; 12 as an imaging cylinder, a forme cylinder 14; 16 with a large number of, in particular similar and/or the same, image-forming print subjects or, in particular similar and/or the same, groups of image-forming print subjects on the circumference, which on a circumferential length corresponding to the print image length in several, e.g. a number, e.g. B. between four and eight, in particular between five and seven, z. B. six, transverse to the transport direction T equidistant from each other spaced columns and are arranged on a cylinder width corresponding to the width of the printed image in a plurality of rows spaced equidistant from one another in the transport direction T.
  • a printing unit 11; 12 in the form of high-pressure reliefs and, in the preferred case, a printing unit 11 working according to screen printing; 12 in the form of stencils.
  • the printing material 02 can be fed to the alignment device 07 via conveying means of a first conveying device 19.
  • this can be one or more positively driven or non-driven rollers, via which the printing material 02 can be guided or is guided on the input side into the alignment device 07.
  • sheet-form printing material 02 i. H. individual sheets of printing material 02 passing through the machine 01 are provided as conveying means.
  • these sheet-conveying means can be formed by one or more transfer cylinders or drums, which transfer the printing material sheet 02 from the printing unit 04, e.g. B. from the impression cylinder 17, take over and possibly over deliver one or more additional transfer cylinders or drums to the aligning device 07 on the input side.
  • the first conveyor 19 is designed as a rotary gripper conveyor 19, e.g. B. as a so-called. B. endless chains 21, which carry transverse to the direction of transport T gripper bars 22. Leading sheet ends can be gripped by the gripper bars 22, the printing material sheets 02 can thus be transported along the conveying path and can be delivered to the corresponding conveying or receiving means at the destination.
  • a chain wheel 23 is preferably located at least in the transfer area of the printing material sheet 02 from the printing unit 04 and in the area in which it is delivered to the alignment device 07; 24, also chain gripper wheel 23; 24 called.
  • the printing material 02 is conveyed to another, e.g. g. second conveyor device 26 of a product receptacle 27 for receiving the printing substrate 02 processed and/or machined in the machine 01, e.g. B. a rewinder 27 in the case of web-type printing material 02 or a stack delivery 27 in the preferred case of sheet-type printing material 02.
  • this can again be one or more positively driven or non-driven rollers, which continue the transport path of the first conveyor system 19 through the alignment device 07 and via which the printing substrate 02 can be guided or is guided on the input side into the rewinder 27.
  • sheet-conveying means are provided as conveying means.
  • the second conveyor 26 can be formed by one or more transfer cylinders or drums, which take the printing material sheet 02 from the alignment device 07 and deliver it downstream to the stack delivery 27.
  • the second conveyor 26 like the first, is designed as a rotary gripper conveyor 26, e.g. B. Chain gripper system 26 with circulating endless traction means 28, e.g. B. endless chains 28, one or more chain wheels 31 or chain gripper wheels 31 and gripper bars 29, through which the printing substrate sheets 02 are taken from the transport path section of the alignment device 07 and z. B. the pile delivery 27 are fed (see, for. B. Fig. 1).
  • an additional drying device with one or more dryers 32 e.g. B. radiation dryers 32 may be provided on the transport path leading away from the aligning device 07.
  • a cooling device is provided on the transport path between aligning device 07 and stack delivery 27, in particular behind the additional drying device in the transport path between aligning device 07 and product receptacle 27.
  • This can be embodied, for example, as a cooling roller, which is positioned between the second conveyor device 26 coming from the aligning device 07 and a third, e.g. B. also as a gripper circulating conveyor, z. B. chain gripper system running conveyor is arranged.
  • an inspection device not shown, e.g. B. a surface or line camera, provided and directed, for example, on a lying in the transport path lateral surface segment of the roller designed as a cooling roller or otherwise.
  • the aligning device 07 set out in detail below is basically arbitrary in terms of its designs, design variants or configurations, but is preferably provided or can be provided in a machine 01 or printing press 01 as described above. In an advantageous embodiment, it is designed in the form of a module and can be inserted into the transport path of the machine 01 to be equipped with inlet and outlet-side interfaces to the open section ends of a conveyor system that continues upstream and downstream.
  • the substrate 02 to be conveyed by the alignment device 07 moves from an input area in which the material to be treated and onto substrate 02 having optically variable coating medium 06 is fed or can be fed to its first side, in a defined manner with an alignment device 33 that generates magnetic fields and includes magnets 44; 33' is brought into operative connection, preferably in such a way that the magnets 44 of the alignment device 33; 33' and the printing substrate 02 printed with the printing ink 06 containing the particles P move synchronously with one another, at least on a section of the transport path.
  • the alignment device 33; 33' as a magnetically effective cylinder 33; 33', short magnetic cylinder 33; 33', which has the arrangement of magnets 44 on the periphery and via which the printing material 02 is guided or conveyed in the direction of an exit region of the alignment device 07.
  • the printing material 02 is or is preferably guided over the magnetic cylinder 33, 33' with the previously printed image elements 03 pointing outwards.
  • magnet 44 should be understood here in addition to a one-piece or individual, possibly engraved permanent or individual electromagnet, as well as a plurality of individual permanent and/or electromagnets combined to form a magnetic active unit 44, in order, for example, to superimpose a specific , in particular to cause an external magnetic field that deviates from the field of a single magnetic dipole.
  • the first side having the optically variable coating medium 06 is to be understood in particular as the side on which the optically variable coating medium 06 can be applied or is or has been applied by the application device 04, for example upstream in the transport path.
  • Imaging is understood to mean any image information caused by, in particular inhomogeneous, alignment of the magnetic particles, in particular inhomogeneous, which can basically be given by a pattern, by alphanumeric characters, by a pictorial representation or a combination thereof.
  • two such alignment devices 33, 33' in particular cylinders 33; 33', which are arranged on the same side or on different sides of a substrate 02 to be conveyed along the transport path (see, e.g., Fig. 5).
  • these are arranged on the same side of the transport path, with a cylinder 34 designed as a transport or transfer cylinder 34 being provided between them.
  • this first alignment device 33 In the embodiment with a first alignment device or one that produces images or introduces image information, this first alignment device 33; at least one further alignment device 42; 43 before and / or be assigned simultaneously.
  • each alignment device 33; 33' at least one further alignment device 42; 43 before and / or be assigned simultaneously.
  • the first alignment device 33 in addition to the first alignment device 33; 33' or to the magnetic cylinder 33; 33' is the first alignment device 33 in a first special advantageous embodiment, in the transport path of the substrate 02 to be conveyed, at least one further alignment device 42, used for pre-orientation, with a plurality of magnets 46 - arranged in particular during operation in a stationary manner in the machine or device - is arranged in front of it in such a way that these magnets are in at least the imaging sub-areas adjacent surface areas a pre-orientation of the particles P can be effected.
  • the magnets 46 of this second alignment device 42 are designed and oriented in such a way that the particles P of the surface area passing through their effective area are mutually at least with regard to the course of their longitudinal axis in the substrate plane, e.g. B. parallel or otherwise aligned homogeneously.
  • the magnets 46 of this second alignment device 42 are preferably designed and oriented in such a way that the particles P of the surface area passing through their effective area are biaxial to one another, e.g. B. be aligned parallel or in another way homogeneously, so that a homogeneous optical impression is created over this surface area. This means e.g. B.
  • a homogeneous optical impression or a homogeneous alignment can also be in one direction continuously, ie without gradual perceptible changes, changing color or intensity progression. Such a change results, for example, from an inclination of the relevant axis course which changes only slowly and steadily in one direction, ie without a step-like change.
  • the magnets 46 are designed and arranged in such a way that the resulting magnetic fields - e.g. B. flat and with a greater length compared to the width particles P - aligned in the relevant surface area of the image element 03 with their flat side parallel to the substrate surface and/or with their longitudinal extent all pointing in the same direction are or will be
  • the term "magnet" 46 should be understood here in addition to a one-piece or individual, possibly engraved permanent or electromagnet, in particular a plurality of individual permanent and/or electromagnets combined to form a magnetic active unit 46, in order to, for example, superimpose a specific , in particular to cause an external magnetic field that deviates from the field of a single magnetic dipole. They are preferably provided in the form of a magnetic active unit 46 by a complex structure made up of a plurality of permanent magnets.
  • a magnetic cylinder 33; 33' formed first alignment device 33; 33' a further alignment device for the pre-orientation of particles P is arranged upstream and for which the magnetic cylinder 33; 33' upstream conveyor device 19 instead of a gripper circulating conveyor 19, a transport cylinder (e.g. comparable to the transport cylinder 34) is arranged upstream
  • the further alignment device 42 provided for pre-orientation is preferably as in FIG. 5 on the circumference of the transport cylinder 34 and preferably with curved magnets 46' educated.
  • a particularly advantageous embodiment or development provides a further alignment device 43 with one or more magnets 47 that is used for simultaneous orientation and is arranged on the transport path on the opposite side of the first alignment device 33 is that the same and/or adjacent surface areas of the same image element 03 to be produced by applying the coating medium to the substrate 02 are aligned at at least one point in the transport path simultaneously with the first and with the further alignment device 33; 43 cooperation.
  • particles P of a picture element 03 are or have passed through at least one point of the transport path the magnetic field of a magnet 44 of the first alignment device 33 is subjected to an aligning force, and at the same time the same and/or other particles P of the same image element 03 are subjected to an aligning force by the magnetic field of a magnet 47 of the additional alignment device 33, which is used for simultaneous orientation.
  • magnet 47 should be understood here in addition to a one-piece or individual, possibly engraved permanent or electromagnet, as well as a plurality of individual permanent and/or electromagnets combined to form a magnetic active unit 47 in order, for example, to superimpose a specific, in particular to effect an external magnetic field that deviates from the field of a single magnetic dipole. They are preferably provided in the form of a magnetic active unit 44 by a complex structure made up of a plurality of permanent magnets.
  • the first or only magnetic cylinder 33 is preferably arranged in the transport path of the substrate 02 to be conveyed on its second side, so that its first side, in particular the upstream side coated inline with optically variable coating medium 06, faces outwards during transport over the first or only magnetic cylinder 33 .
  • the magnetic cylinder 33 has a plurality of magnets 44, which serve to orient at least some of the magnetic or magnetizable particles P of the coating medium 06 applied to the printing substrate 02 passing through.
  • Magnets are generally understood to mean magnetically active devices that cause a permanent or switchable magnetic field at least towards the side of the transport path (in particular a magnetic field that is sufficiently strong to align particles P contained in the coating medium 06 on the substrate 02 that is passed over it as described here).
  • the magnets 44 can be formed by one or more permanent magnets with or without engraving, by electromagnets or by combinations of one or more permanent magnets and/or one or more electromagnets. Regardless of whether it is a single or a combination of several magnetic elements, z. B. permanent and / or electromagnets, associated and in their entirety forming an active unit magnetic elements are referred to below as magnets 44 for short. Such a magnet can be assembled, for example, from a number of differently aligned permanent magnets, which together provide an outwardly effective magnetic field.
  • the unequipped cylinder is also referred to here as a cylinder body, which can be equipped with magnets 44 and acts as a magnetic cylinder 33 .
  • the magnets 44 are preferably arranged or can be arranged detachably on the cylinder 33 - if necessary together with a corresponding holder - in such a way that, in the assembled state, they can be arranged at a defined location on the circumference of the cylinder 33 and can preferably be completely removed from the cylinder 33 and/or on the Scope of the cylinder 33 can be positioned in the axial and / or circumferential direction.
  • the magnets 44 in or on several, z. B. between four and eight, in particular between five and seven, z. B. six, axially spaced from each other and preferably in the axial direction positionable ring elements 37 arranged or arrangeable, wherein in or on these ring elements 37 in turn at least one, preferably several, z. B. between two and twelve, advantageously between five and ten, magnets 44 are arranged or can be arranged in the circumferential direction one behind the other and preferably in the circumferential direction (see, for example, FIG. 6).
  • the ring elements 37 are in the area of their outer circumference, for example, by circumferential covers 48, z. B.
  • z. B above-mentioned suction openings 49 and unmarked recesses are provided at the respective location of the magnetic elements 44 (indicated as an example for part of the right-hand ring element 37 in FIG. 6).
  • a cover plate 48 extending axially over all ring elements 37 can be provided, which includes the recesses and/or suction openings 49 at the relevant points.
  • the suction openings 49, in particular the suction channels 51 lying underneath, are above z. B. a front rotary union with a vacuum pump in line connection.
  • the magnetic cylinder 33 can be designed without any holding means acting on the substrate 02. If necessary, the above-mentioned suction air openings can be provided on the circumference, which are connected to a vacuum pump and ensure that substrate 02 rests securely on the lateral surface.
  • holding means 36 e.g. g. grippers 36 of what is known as a gripper strip, by means of which a substrate sheet 02 to be conveyed via the cylinder 33 is picked up by its leading end and can or is held over an angular range during a rotation of the cylinder 33.
  • a magnetic cylinder 33 configured in this way is used at the same time to transport the substrate 02.
  • the magnetic cylinder 33 can be rotated on both sides in frame walls 38; 39, e.g. B. side panels 38; 39 of a frame carrying the components of the alignment device 07.
  • applied particles P - z. B. at least in a surface area relevant to the image or motif to be displayed - before the interaction with the alignment device 33 provided for imaging alignment; 33' or upstream thereof and/or at least at a point in time or during a period of time during the interaction with the alignment device 07 provided for imaging alignment with the aid of at least one further alignment device 42 serving for pre-orientation and/or simultaneous orientation; 43 orientable (see e.g. Fig. 8 to Fig. 12).
  • FIG. 2 a The effect of such a pre-alignment is illustrated using the schematic representations in FIG. 2, where on the left-hand side, FIG. 2 a), an alignment with only the imaging alignment device 33; 33' is sketched and on the right-hand side, Fig. 2 b), in comparison to this, an alignment using at least one of the other alignment devices 42 effecting a pre-orientation and/or simultaneous orientation; 43.
  • the further alignment device 42 used for pre-orientation is preferably arranged operationally fixed to the frame on the transport path.
  • the magnets 46 of the additional alignment device that causes a pre-orientation are preferably provided on the side of the transport path that is opposite the side on which printing was last carried out in the upstream transport path or on which the coating medium 06 was applied. In other words, the magnets 46 are preferably provided on the last or freshly printed side of the conveyed substrate 02.
  • the further aligning device 42 provided for pre-orientation preferably has a plurality, e.g. B. between four and eight, in particular between five and seven, z. B. six, transverse to the transport direction T mutually spaced magnets 46 on. This minimizes interference from unwanted field overlaps.
  • the magnets 46 of the further alignment device 42 are arranged detachably on a support frame 52 .
  • the support frame 52 together with the magnets 46 can be arranged in the frame of the alignment device 07 so that they can be removed.
  • a gripping tool 63 e.g. B. a handle 63 is provided, which comprises magnetic or magnetizable elements in the area cooperating with the magnet 46 .
  • the handle 63 can comprise a plate which can be placed flat on the surface of the magnet.
  • the filler piece 56 can be made of a magnetizable material, for example a magnetizable high-grade steel. In this embodiment, it can also be held by a detachable gripping tool 64, e.g. B. one or more permanent magnets.
  • a detachable gripping tool 64 e.g. B. one or more permanent magnets.
  • the magnets 46 of the additional alignment device 42 used for pre-orientation are arranged on the support frame 52 so that they can be adjusted in a horizontal direction transverse to the transport direction T, for example to enable the production of panels 09 of different formats and/or panels 09 with different formats on the panel 09 positioned picture elements 03 to allow.
  • the magnets 46 of this further alignment device 42 are mounted in a transversely movable manner on one or more traverses 53 , for example in one or more guides 57 , for example linear guides 57 .
  • a clamping mechanism 58 is provided, which is preferably operated manually and without tools. This can be, for example, a hand wheel, by means of which a screw bolt can be switched on and off against the traverse 53 carrying the magnet 46 .
  • magnets 46 rest against stop means 59 when viewed in the direction perpendicular to the transport path.
  • the magnets 44 are spring-loaded, e.g. B. by one or more spring elements 62, with a force pointing in the direction of the transport path - in particular against the stop means 59 - acted upon or acted upon.
  • the stop means 59 can be designed as an adjustable fitting element 59 and can be effected, for example, by means of a fitting screw 59 .
  • the screw head of the fitting screw can form the stop or - as shown here - the lower head ring or a washer held by this.
  • the magnet 46 of the further alignment device 42 is or can be fixed or can be fixed to a holder 54 by the fitted screw 59 . B. by screwing the distance to the transport plane of the substrate 02 is adjustable.
  • the magnet 46 is easily removed from the support frame 52, z. B. from a magnet 46 carrying and on the cross member 53 in particular arranged transversely movable bracket 54, z. B. a rider 54, detachable.
  • the rider 54 can include a carrier plate 69 on its upper side, on which the magnet 46 is or will be fastened.
  • the magnet 46 of the further alignment device 42 is z. B. via a positively effective in the direction of the transport path connection 59, 61; 67; 68 is held, which can be released by a movement of the magnet 46 with at least one movement component, which lies in a plane running parallel to the transport plane.
  • Such a positive connection can, for example, on one side, z. B. at one end, through the above-mentioned fitting screw 59 and a particular keyhole-shaped recess 61 in the manner of a correspondingly shaped slot or slot 61 may be formed and z. B. correspond to this on another page, z. B. the other end, also by a z. B. in the direction of the transport path effective stop means 67, for example, in the above-mentioned manner also effective as fitting elements 67 fitting screw 67, which is also in a recess 68, z. B. engages a slot 68 which is also shaped like a keyhole or preferably a slot 68 which is open at the edge (see, for example, FIG.
  • the fitted screws 59; 67 and recesses 61; 68 can be included in the magnet 46 sinks 65, z. B. so-called.
  • Pockets 65 be sunk, with its abutment surface against the bottom of the depression 65 or - in the case of a magnet 46-receiving floor strikes against this.
  • a blowing device 78 can be provided, by means of which the substrate 02 is pressed against the magnets 46.
  • the blower device 78 can include a blower tube 79 running transversely to the transport direction T with blower air openings pointing in the direction of the transport path, which is supplied via a supply line from a blower air source. A defined position is thus achieved and/or a largely homogeneous magnetic field is produced in the coating due to the close contact.
  • all or at least one or more of the grippers of the gripper bar 22 can be made of a non-magnetic or non-magnetizable material.
  • the magnets 46 of the further alignment device 42 effecting a pre-orientation can be arranged on a linear transport path section and at least on the side facing the transport path have an elongated and planar shape in the transport direction T. This is the case, for example, when the conveyor device 19 has a linear section in the area of the alignment device 42 .
  • the alignment device 07 or the imaging alignment device 33; 33' a curved transport path section, e.g. B. a transport cylinder 34 is arranged upstream, the magnets 46 of the further alignment device 42 on a curved, z. B. by a peripheral portion of such a rotating transport means formed transport path section, and at least on the side facing the transport path along the transport path elongated curved shape, in particular curved like a segment of a circle.
  • the above-mentioned second additional alignment device 43 with one or a plurality of magnets 47 is advantageously provided, which is arranged on the transport path on the opposite side of the first alignment device 33 of the transport path.
  • This alignment device 43 which is provided for orientation purposes, is also preferably arranged fixed to the frame on the transport path during operation.
  • the magnets 47 of this alignment device 43 are preferably provided on the circumference of the imaging alignment device 33 embodied as a magnetic cylinder 33 on the opposite side of the transport path.
  • the further alignment device 43 provided for the simultaneous orientation preferably comprises a plurality of, e.g. B. between four and eight, in particular between five and seven, z. B. six, transverse to the transport direction T spaced magnets 47.
  • the magnets 47 of this further alignment device 43 are preferably arranged on a support frame 71, which is arranged in such a way is mounted in a variable position in a frame of the device, so that the magnets 47 can be moved from a working position to a set-up or inactive position at a greater distance from the transport path than the working position, and vice versa.
  • the support frame 71 carrying the magnets 47 of the additional alignment device is preferably mounted in a frame of the alignment device 07 such that it can pivot about an axis 72 running transversely to the transport direction T, for example a pivot axis 72.
  • the magnets 47 of the further alignment device 43 are mounted in a transversely movable manner, for example, on one or more traverses 73 .
  • a - z. B. comparable to the above clamping mechanism 58 - designed as a clamping mechanism 76 holding device 76, they can be fixed in a desired position.
  • the magnets 47 of this further alignment device 43 are mounted in a transversely movable manner on one or more traverses 77, for example via a corresponding holder 77, e.g. B. one or more tabs 77, in one or more guides 74, such as linear guides 74 out.
  • the magnets 47 of the further aligning device 43 are arranged on a curved transport path section, in particular on the circumference of the magnetic cylinder 33, 33', and have at least one on the side facing the transport path along the transport path elongated curved shape, in particular curved shape like a segment of a circle.
  • a drying and/or curing device 41; 4T arranged in such a way that they are still in the effective range of the imaging alignment device 33; 33' point of the transport path acts.
  • this is on a peripheral section lying in the transport path, which as a magnetic cylinder 33; 33' formed first alignment device 33 directed.
  • the respective further alignment device 42; 43 one of the number of columns mentioned above, e.g. B. between four and eight, in particular between five and seven, z. B. six, corresponding number of magnets 46; 47, which are arranged in the transport path such that the print subjects or groups of imaging print subjects along the transport path are at least partially aligned with the lateral position of the magnets 46; 47 of the relevant further alignment device 42; 43 align.
  • UV dryer 18 drying and/or curing device, UV dryer
  • Conveyor device gripper circulating conveyor, chain gripper system 0 1 endless traction device, endless chain 2 gripper strip 3 chain wheel, chain gripper wheel 4 chain wheel, chain gripper wheel 5 Conveying device, gripper circulating conveyor, chain gripper system
  • UV dryer UV dryer
  • Blowpipe ' alignment device further first, cylinder, magnetic cylinder
  • UV radiation dryer UV dryer, UV LED dryer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Printing Methods (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Rotary Presses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

L'invention concerne un dispositif pour aligner des particules magnétiques ou magnétisables (P) qui sont contenues dans un agent de revêtement (06) appliqué sur un côté d'un substrat en forme de bande ou arqué (02), le dispositif ayant un premier moyen d'alignement (33 ; 33') qui est disposé dans le trajet de transport du substrat (02) à transporter et qui comporte une pluralité d'aimants (44) dans la région de son côté faisant face au trajet de transport afin d'aligner, dans chaque cas, dans une région de surface ayant l'agent de revêtement (06), au moins une partie des particules (P) contenues dans l'agent de revêtement (06) de manière définie pour générer des informations d'image, les aimants (44) du premier moyen d'alignement (33 ; 33') qui sont utilisés pour l'alignement et le substrat (02) qui est alimenté en agent de revêtement (06) contenant les particules (P) se déplaçant de manière synchrone les uns par rapport aux autres au moins sur une partie du trajet de transport. Au moins un autre moyen d'alignement (42 ; 43) qui est fixé au cadre sur le trajet de transport pendant le fonctionnement et comporte une pluralité d'aimants (46 ; 47) qui restent fixes dans le dispositif pendant le fonctionnement, est associé à l'avant ou à l'opposé du premier moyen d'alignement (33 ; 33') dans le trajet de transport du substrat à transporter (02). L'invention concerne également une machine d'impression comprenant un tel dispositif ainsi qu'un procédé pour aligner les particules magnétiques ou magnétisables.
EP21765626.3A 2020-10-01 2021-08-18 Machine pour générer des éléments d'image optiquement variables Active EP4178805B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020125728.7A DE102020125728B3 (de) 2020-10-01 2020-10-01 Vorrichtung zum Ausrichten von magnetischen oder magnetisierbaren Partikeln sowie Maschine zur Erzeugung optisch variabler Bildelemente
DE102020125727.9A DE102020125727B3 (de) 2020-10-01 2020-10-01 Vorrichtung zum Ausrichten von magnetischen oder magnetisierbaren Partikeln sowie Maschine zur Erzeugung optisch variabler Bildelemente
PCT/EP2021/072888 WO2022069107A1 (fr) 2020-10-01 2021-08-18 Dispositif et procédé pour aligner des particules magnétiques ou magnétisables, et machine pour générer des éléments d'image optiquement variables

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EP4178805A1 true EP4178805A1 (fr) 2023-05-17
EP4178805B1 EP4178805B1 (fr) 2024-05-29

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US (1) US11858253B2 (fr)
EP (1) EP4178805B1 (fr)
JP (1) JP7387941B2 (fr)
KR (1) KR20230074585A (fr)
CN (1) CN116075432A (fr)
AU (1) AU2021353790B2 (fr)
BR (1) BR112023006245A2 (fr)
CA (1) CA3200869A1 (fr)
CL (1) CL2023000965A1 (fr)
CO (1) CO2023005258A2 (fr)
MX (1) MX2023003936A (fr)
WO (1) WO2022069107A1 (fr)

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DE102022128121A1 (de) 2022-10-25 2024-04-25 Koenig & Bauer Ag Vorrichtung zum Ausrichten von magnetischen oder magnetisierbaren Partikeln sowie Maschine zur Erzeugung optisch variabler Bildelemente

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DE102005042895A1 (de) 2005-09-09 2007-03-15 Securasta Gmbh Verfahren zur Herstellung eines Gegenstandes mit einer eine optisch erkennbare Struktur aufweisenden Sichtseite und nach dem Verfahren hergestellter Gegenstand
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DE102010041398A1 (de) 2009-10-22 2011-04-28 Manroland Ag Einrichtung und Verfahren zum Beschichten
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MA39097B1 (fr) 2013-12-13 2018-08-31 Sicpa Holding Sa Procédé de production de couches à effets optiques
EP3178569A1 (fr) 2016-06-29 2017-06-14 Sicpa Holding Sa Procédés et dispositifs pour produire des couches à effet optique au moyen d'un photomasque
CN115646778A (zh) 2016-08-31 2023-01-31 唯亚威通讯技术有限公司 对磁性可定向薄片进行定向
TWI794359B (zh) 2018-01-17 2023-03-01 瑞士商西克帕控股有限公司 用於生產光學效應層之製程
DE102018205883A1 (de) 2018-04-18 2019-10-24 Koenig & Bauer Ag Vorrichtung und Maschine zum Ausrichten von magnetischen oder magnetisierbaren Partikeln auf einem bahn- oder bogenförmigen Substrat
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DE102018122160A1 (de) 2018-09-11 2020-03-12 Koenig & Bauer Ag Bogendruckmaschine mit Bogen-Simultandruckeinheit und Nummerier-Formzylinder
DE102018127936A1 (de) 2018-11-08 2020-05-14 Koenig & Bauer Ag Vorrichtung, Druckmaschine und Verfahren zur Herstellung eines Sicherheitselementes auf einem Substrat

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CO2023005258A2 (es) 2023-05-19
WO2022069107A1 (fr) 2022-04-07
AU2021353790B2 (en) 2024-02-15
AU2021353790A1 (en) 2023-06-08
BR112023006245A2 (pt) 2023-05-09
MX2023003936A (es) 2023-06-22
CN116075432A (zh) 2023-05-05
JP7387941B2 (ja) 2023-11-28
CA3200869A1 (fr) 2022-04-07
US20230241881A1 (en) 2023-08-03
US11858253B2 (en) 2024-01-02
JP2023540395A (ja) 2023-09-22
EP4178805B1 (fr) 2024-05-29
CL2023000965A1 (es) 2023-10-13
KR20230074585A (ko) 2023-05-30

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