EP3877182B1 - Dispositif et machine d'impression pour produire un element de securite sur un substrat - Google Patents

Dispositif et machine d'impression pour produire un element de securite sur un substrat Download PDF

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Publication number
EP3877182B1
EP3877182B1 EP19783236.3A EP19783236A EP3877182B1 EP 3877182 B1 EP3877182 B1 EP 3877182B1 EP 19783236 A EP19783236 A EP 19783236A EP 3877182 B1 EP3877182 B1 EP 3877182B1
Authority
EP
European Patent Office
Prior art keywords
elements
magnetic
cylinder
printing
substrate
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.)
Active
Application number
EP19783236.3A
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German (de)
English (en)
Other versions
EP3877182A1 (fr
Inventor
Aurélie BERTHON
Martin Palme
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
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP3877182A1 publication Critical patent/EP3877182A1/fr
Application granted granted Critical
Publication of EP3877182B1 publication Critical patent/EP3877182B1/fr
Active legal-status Critical Current
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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
    • B41F13/08—Cylinders
    • 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
    • B41F23/0443—Drying sheets, e.g. between two printing stations after printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
    • B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
    • 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
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation

Definitions

  • the invention relates to a device and a printing machine for producing security elements on a substrate, in particular a security element with a coating agent containing magnetic or magnetizable particles, according to the preamble of claim 1 or 11.
  • 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 comprising a cylinder with a plurality of elements that cause a magnetic field on the circumference and a dryer directed at a point in the transport path , at which the substrate has not yet left the cylinder.
  • the EP 1 745 940 B1 a two-stage coating of an article for security printing in a two-stage printing or painting of an article with ink or paint containing magnetic particles.
  • the article is printed/painted with a first ink/color with a predetermined pattern, then exposed to a magnetic field and finally dried to fix the magnetic particles.
  • the article is printed with a magnetic ink or paint, preferably with a lower concentration, subjected to a magnetic field and dried.
  • the second printing/painting takes place on the same side of the article over the printed image of the first pattern, in a second embodiment on the other side of the article, which is transparent in this case.
  • a substrate is used to produce magnetic printed matter or multi-printed with magnetic ink and then successively passed over two magnetic drums, where the magnetic ink is oriented in mutually different sub-areas of the printing section by the two magnetic drums. It is only dried after passing through the magnetic drums.
  • the differently oriented sub-areas are spaced apart from one another, while in one example the sub-areas to be aligned by the two magnetic drums can overlap. Since drying is only carried out after the second alignment, the overlapping section receives the orientation from the last magnetic drum. On the one hand, this procedure should enable more complex magnetic patterns and at the same time reduce the formation of deformations in the substrate, as they are supposed to occur with conventional repeated printing, orientation and drying.
  • the WO 2016/030819 A1 relates to a combined printing machine for screen printing with magnetically variable ink and subsequent orientation and drying and subsequent intaglio printing. and a subsequent screen printing.
  • the EP 2 484 455 A1 discloses, in one of several embodiments, a security element having two layers of magnetic ink printed one on top of the other, oriented and cured, wherein the first cured coating can be produced, ie applied, oriented and cured, or vice versa after the second cured coating.
  • the steps of applying, orienting and curing can be repeated at will to produce additional coatings on the substrate and/or the coatings.
  • magnetic ink is only printed on in one pass, this is oriented and dried in a sub-area, and this is then also done in another sub-area oriented and dried.
  • the DE 10 2016 204 549 A1 relates to a dryer device, by means of which the printing material can be acted upon in tracks of a variable number and/or variable width and/or position, using the example of a screen printing unit, a numbering unit and an offset printing unit.
  • the screen printing unit comprises two screen printing cylinders working together with the same impression cylinder and a dryer located between them.
  • a magnetic cylinder can be provided in the transport section downstream of the screen printing unit.
  • EP 2 433 798 A1 discloses a printing machine with two screen printing units and a downstream magnetic cylinder, on the lateral surface of which a drying device is directed and which comprises magnetic elements that can be adjusted in the circumferential direction and in the axial direction.
  • the invention is based on the object of creating a device and a printing machine for producing security elements on a substrate.
  • substrates with complex optically variable image elements can be produced very variably and/or with high quality and/or precision.
  • a structure can be produced which, by means of a plurality of effective layers one on top of the other, can be recognized as changing image effects or images with the viewing angle.
  • specially designed carrier media that absorb the magnetic particles and/or lower particle concentrations in the upper layer, ie applied as the second layer or on the other side of a transparent substrate, can be used to perceive the image directly or possibly via the substrate below depending on the viewing angle layer vary.
  • the substrate is first printed with a plurality of printing elements using a first coating agent containing magnetic particles. Downstream in the transport path, particles contained in the first coating agent previously applied to the substrate are aligned by the action of magnetic field lines and aligned at least superficially and/or at least partially dried and/or hardened. Subsequently, the substrate is printed downstream using a second coating agent containing magnetic particles with second print image elements in such a way that the first and second print image elements - e.g. B.
  • the or at least some of the magnetic elements of the first magnetic cylinder and/or the second magnetic cylinder are arranged on a basic cylinder body so that they can be adjusted individually or in groups with regard to their axial and/or circumferential position.
  • This has special advantages, for example, especially when using two optically effective effects in combination, e.g. B. with regard to the quality and/or variability in the results to be achieved.
  • a motor which is mechanically independent of the respectively cooperating impression cylinder, e.g. B. electric motor single drive, driven in rotation.
  • a particularly advantageous embodiment at least for drying the lower layer or the layer applied in a first printing unit - a particularly narrow-band radiation dryer, advantageously an LED dryer, is used as the dryer.
  • a particularly narrow-band radiation dryer advantageously an LED dryer
  • UV-LED dryers used and/or a dryer through which the substrate is viewed transversely to the direction of transport can only be acted upon in sections, ie in a plurality of sections spaced apart from one another, or is acted upon by radiation. This means that the heat input is low and material stress and/or deformation is as low as possible.
  • the dryer is advantageously dimensioned or operated or operable in such a way that - tailored to the exposure time during operation - only partial drying of the coating medium layer, i.e. an outer partial layer of the coating, is dried and thus essentially the subsequent drying Particles perceived as security element are fixed in their position.
  • the at least one printing unit for printing the lower layer is designed with a printing form that is set up with the substrate along its printing or repeat length to print several - in particular equivalent - spaced apart columns of print image elements transverse to the transport direction from each other - in particular equivalent.
  • an area coverage of the printed image applied as the lower layer on the usable area on the substrate given by the printed image length and printed image width is less than 50%, preferably less than 30%.
  • Magnetic elements on the first and/or second magnetic cylinder are preferably arranged on a basic cylinder body so that they can be adjusted individually or in groups with regard to their axial and/or circumferential position.
  • the first and/or second magnetic cylinder is mounted between frame walls of the machine frame in such a way that it can be replaced - in particular without removing one of the frame walls or can be removed to carry out set-up work.
  • first printed image elements 12 can be applied over the entire surface or preferably in partial areas in the form of first printed image elements 12, a second application device 07; 17, e.g. B. a printing unit 07; 17, through which at least one second optically variable coating means 13, z. B. optically variable ink 13 or paint 13, at least one application point, z. B. pressure point, on at least the same first side of the substrate 02, z. B.
  • the printing substrate 02 can be applied over the entire surface or preferably in partial areas in the form of second printed image elements 14, as well as between the first and second application device 06; 07; 16; 17 arranged in the transport path device 08; 18 for aligning the particles contained in the optically variable coating medium 11 applied to the substrate 02 and responsible for the optical variability, and one of the second application device 07; 17 downstream device 09 in the transport path; 19 for aligning the particles contained in the optically variable coating material 13 applied to the substrate 02 and responsible for the optical variability.
  • These devices 08; 18; 09; 19 are also referred to below as alignment devices 08; 18; 09; 19 denoted.
  • print image elements 12; 14 of variable coating means 11; 13 can correspond in size and position to the optically variable picture elements 03 to be generated or possibly also be smaller or larger than these, possibly even several panels 04 extending over the surface.
  • the first and second print image elements 12; 14 are at least partially applied to one another on the substrate 02, in particular printed onto the substrate 02, in such a way that the first and the second printed image elements 12; 14 pairs at least overlap, e.g.
  • first at least not over the second print image elements 12; 14 protrude, preferably in such a way that the first and the second print image element 12; 14 on top of each other and are in congruence with each other.
  • larger print image elements 12; 14 is not, for example, on the entire optically variable coating means 11; 13 coated surface by aligning an optically variable image information, a motif or a character string, in the optically variable image element 03 generated.
  • image information is indicated by way of example as a circular disc or spherical cap with a three-dimensional effect embossed into the printed image element 12 underneath by magnetic alignment.
  • the particles responsible for the optical variability are here in the respective coating means 11; 13, e.g. B. Ink 11; 13 or the paint 11; 13, magnetic or magnetisable, non-spherical particles, e.g. B. pigment particles, also referred to here as magnetic particles or flakes.
  • they can in the first and second coating means 11; 13 may be provided in different concentrations and/or color effects in the respective carrier medium.
  • the machine 01; 01' is for the production of panels 04, e.g. B. securities 04, in particular banknotes 04, or with multiple benefits 04, z. B. the printed images of securities 04 printed and in the machine 01; 01' treated substrate sheet 02' as intermediate products 02'.
  • 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.
  • a substrate section ie a longitudinal section of web-shaped substrate 02 or a sheet of a sheet-shaped substrate 02, e.g. g. substrate sheets 02 or in particular printing material sheets 02, are preferably several, e.g. B. three to eight, especially four to seven, benefit 04, e.g. g. printed images 04, banknotes to be produced in a row next to each other and several such rows of copies 04 or their printed images arranged one behind the other in the transport direction T or arranged during the processing of the substrate 02 (e.g. indicated in Figures 3 to 6 ).
  • benefit 04 e.g. g. printed images 04, banknotes to be produced in a row next to each other and several such rows of copies 04 or their printed images arranged one behind the other in the transport direction T or arranged during the processing of the substrate 02 (e.g. indicated in Figures 3 to 6 ).
  • the printing press 01; 01' machine 01: 01' can in principle have two or possibly more printing units 06; 16; 07; 17, each with one or more printing units 21; 22; 31; 32 of any printing process. In a preferred embodiment, however, it comprises two printing units 06; 16; 07; 17 each having at least one printing unit 21; 22; 31; 32, through which the first or second optically variable coating means 11; 13, e.g. B. on the same first side of the printing substrate 02, is or can be applied.
  • the first or second optically variable coating means 11; 13, e.g. B. on the same first side of the printing substrate 02 is or can be applied.
  • a greater layer thickness can be applied compared to other printing methods.
  • the expression “first side” of the substrate 02 or printing material 02 has been chosen arbitrarily and is intended to designate that side of the printing material 02 on which the optically variable coating medium 11; 13 is or was or can be applied.
  • the application of the first coating medium 11 to produce the first printed image elements 12 and the application of the second coating medium 13 to produce the second printed image elements 14 can, in principle, also be carried out on two different sides of the substrate 02.
  • a corresponding arrangement of a printing unit 21; 22 of the first printing unit 06; 16 and a printing unit 31; 32 of the second printing unit 07; 17 on different sides of the transport path is to be provided or set up accordingly.
  • the printing press 01; 01' also includes at least one printing substrate template 26, e.g. B. a roll unwinder or preferably a sheet feeder 26, of which the Z. B. web-shaped or preferably sheet-shaped substrate 02 - if necessary via further printing or processing units - the first optically variable coating medium 11; 13 applied printing unit 06; 16, e.g. B. flexographic or in particular screen printing unit 06; 16, with at least one printing unit 21; 22, e.g. B. flexo or especially screen printing unit 21; 22, is or can be fed, and downstream of the second printing unit 07; 17 a product receptacle 27 for receiving the product in the machine 01; 01' processed and/or processed substrate 02, e.g. g. a rewinder for web-type substrate 02 or a stack delivery device 27, in the preferred case for sheet-type substrate 02.
  • a printing substrate template 26 e.g. B. a roll unwinder or preferably a sheet feeder 26, of which the Z. B. web-shaped or preferably
  • each printing unit 06; 16; 07; 17 only one printing unit 21; 22; 31; 32 can be provided, in an advantageous embodiment, in at least the second printing unit 07; 17, e.g. B. flexographic or in particular screen printing unit 07; 17 several, in particular two printing units 31; 32, e.g. B. flexo or especially screen printing units 31; 32, provided between each forme cylinder 33; 34, e.g. B. a screen printing cylinder 33; 34, and a - for example, common -back pressure cylinder 38 two pressure points for z. B. form the same side of printing material 02 (see, for example, in 7 and 8 ).
  • the at least second printing unit 07; 17 next to the second printing unit 31; 32 at least one further printing unit 32; 31.
  • the coating agent 13 can also be applied in a thicker layer. It can with only one or - if available - with two screen printing units 31; 32 of the second printing unit 07; 17 optically variable coating agent 13 can be applied or applied.
  • the first printing unit 06; 16 as mentioned, one or, in an embodiment variant that is advantageous in terms of color, several, in particular two, printing units 21; 22, in particular screen printing units 21; 22, between each forme cylinder 23; 24, e.g. B. a screen printing cylinder 23; 24, and a - for example common - impression cylinder 28 two pressure points for z. B. the same side of the printing substrate 02 form (see also example in 1 and 7 ).
  • the first printing unit 06; 16 with only one printing unit 21, in particular a screen printing unit 21, which is located between a forme cylinder 23, e.g. B. a screen printing cylinder 23, and a common impression cylinder 28 forms a printing point (see example in 2 and 8 ).
  • the respective impression cylinder 28; 38 is preferably triple-circumference, i. H. designed to hold three substrate sheets 02 in circumference.
  • imaging elements 39 e.g. B. Printed subjects or, in particular similar and/or the same, groups of imaging printed subjects 39 on the circumference, which z. B. matrix-like in several columns spaced equidistantly from one another transversely to the transport direction T and on a cylinder width corresponding to the width of the printed image in several rows spaced
  • a printing form of the forme cylinder 23; 24 thus comprises an area effective for ink transfer, e.g. B. raised relief surface or permeable stencil surface of less than 50%, in particular less than 30%.
  • the matrix-like arranged imaging elements 39 or possibly groups of imaging elements 39 on a first forme cylinder 23; 24 in at least one first printing unit 21; 22 of the first printing unit 06; 16 and the imaging elements 39 or groups of imaging elements 39 on a second forme cylinder 33; 34 in at least one printing unit 31; 32 of the second printing unit 07; 17 are on the respective forme cylinder 23; 24; 33; 34 are preferably arranged in the same pattern in such a way that the first forme cylinder 23; 24 along the transport path through the machine 01; 01' conveyed substrate 02 using the first coating means 11 via the z. B.
  • the relative axial and angular position between the first and second forme cylinders 23; 24, 33; 34 in the transport path as given or established.
  • one or more forme cylinders 23; 24, in particular screen printing cylinders 23; 24, one or more printing units 21; 22 of the first printing unit 06 and one or more forme cylinders 33; 34, in particular screen printing cylinder 33; 34, one or more printing units 31; 32 of the second Printing unit 07 in at least one operating situation, e.g. B. at least as part of setting up, stopping and / or (re)starting the printing unit 21; 22; 31; 32 or the printing press, but preferably also during a production operation, mechanically driven in rotation independently of one another, preferably in each case by a motor mechanically independent of the respectively interacting impression cylinder, e.g. B. electric motor single drive, rotationally driven or drivable. Possibly.
  • a motor mechanically independent of the respectively interacting impression cylinder e.g. B. electric motor single drive, rotationally driven or drivable.
  • these can be independent of each other, but together with the respective cooperating impression cylinder 28; 38 be driven.
  • a circumferential register between the two corresponding printed image elements can be set in a particularly simple manner and/or a set-up and/or standstill angular position of the independently driven forme cylinders 23; 24; 33; 34, in particular screen printing cylinder 23; 24; 33; 34, can be approached independently of one another.
  • these individual drives can be used as set-up drives in addition to a separable drive coupling to a plurality of components of the respective printing unit 06; 07 or more printing units 056; 07 be provided in production driving the main drive.
  • these individual drives are set up and provided for the relevant forme cylinder 23; 24; 33; 34 also mechanically independent of each other during production, preferably also mechanically independent of the respective impression cylinder 28; 38 to drive rotationally.
  • at least one of the two independently driven forme cylinders 23; 24; 33; 34 and/or before or during the switching on of one of the printing units 21; 22; 31; 32 is at least the associated forme cylinder 23; 24; 33; 34 is synchronized to a setpoint angular position synchronous with the machine phase position, ie initially operated at a rotational speed that is lower or higher than the machine speed, until it has the desired or required relative angular position to the machine phase position, ie to the position of the substrate sections conveyed through the printing press.
  • the first and the second alignment device 08; 18; 09; 19 each comprise at least one magnetically active cylinder 41 located in the transport path; 42, in particular magnetic cylinder 41; 42, over which the substrate sheets 02 are guided in at least one rotational angle range of at least 30°, preferably at least 60°, and the magnetic particles of the previously applied and not yet dried coating material 11; 13 corresponding to one of the magnetic cylinder 41; 42 outgoing course pattern of magnetic field lines are oriented.
  • the respective magnetic cylinder 41; 42 has, in the area of its outer circumference, a plurality of elements 43 that produce a magnetic field, or magnetic elements 43 for short, which match an orientation of at least some of the magnetic or magnetizable particles of the coating medium 11; 13 serve.
  • the magnet elements 43 can be formed by permanent magnets with or without engraving, by electromagnets or by combinations of one or more permanent magnets and/or one or more electromagnets and are independent of whether a magnet element 43 is a single magnet element or a combination of several Permanent and/or electromagnets are referred to below as “magnets” 43 .
  • These can be removable and/or rotatable about a radially running axis and/or adjustable with regard to their axial and/or circumferential position individually or in groups on a cylinder base body and together with this the respective magnetic cylinder 41; 42 train.
  • magnetic elements 43 are provided or can be provided, which in processing with the through the machine 01; 01' conveyed substrate 02, preferably with the pattern of the substrate 02 to be subjected to magnetic fields in the next upstream printing unit 06; 07, 16; 17 applied print image elements 12; 14 correspond or coincide.
  • the particles are aligned or oriented by means of the magnetic field lines caused by the magnetic elements 43, possibly also through the substrate 02.
  • the preferably matrix-like on one or the first magnetic cylinder 41 of the first alignment device 08; 18 arranged magnets 43 and on one or the second magnetic cylinder 42 of the second alignment device 09; 19 are arranged on the respective circumference in the same pattern in such a way that the effective locations of the magnets 43 of the first magnetic cylinder 41 and the effective locations of the magnets 43 of the second magnetic cylinder 42 at least all overlap and are preferably essentially congruent.
  • the relative axial and angular position between the first and second magnetic cylinders 41; 42 in the transport path as given or established.
  • the magnetic elements 43 can -. B. according to the pattern and the arrangement of the benefit 04 or the imaging elements 39 of a forme cylinder 23; 24; 33; 34 of the printing unit 06; 16; 07; 17 - in or on several, e.g. B. in three to eight, in particular in four and seven, axially spaced from each other and preferably in the axial direction positionable ring elements 44 or can be arranged, wherein in or on these ring elements 44 in turn at least one, preferably several, z. B. between two and twelve, advantageously between five and ten, magnetic elements 43 are arranged or can be arranged one behind the other in the circumferential direction and preferably in the circumferential direction (see e.g. 10 ).
  • the ring elements 44 are in the area of their outer circumference, for example, by peripheral covers 46, z. B. with the annular ribs integrally connected ceilings 46 or patch cover plates 46, closed, in which z. B. suction openings 47 and not designated recesses at the respective location of the magnetic elements 43 are provided (indicated as an example for a part of the right-hand ring element 44 in 10 ).
  • a cover plate that extends axially over all ring elements 44 can be provided, which includes the recesses and/or suction openings 47 at the relevant points.
  • the suction openings 47 in particular the suction channels located underneath, are in line connection with a vacuum pump.
  • a line running centrally in the axial direction is provided, which is connected at the end via a rotary feedthrough 48 to a vacuum line or vacuum source and is in line connection on the cylinder side with the suction openings 47 or suction channels.
  • the magnetic cylinder 41; 42 can be designed without additional holding means if the substrate 02 is in web form.
  • a sheet-like substrate 02 which is preferred here, on the circumference of the cylinder 41; 42 preferably holding elements 49, z.
  • gripper 49 of a so-called gripper strip provided through which a cylinder 41; 42 to be conveyed substrate sheet 02 was taken with its leading end and during a rotation of the cylinder 41; 42 can or is held over a range of angles.
  • a magnetic cylinder 41 configured in this way; 42 also serves to transport the substrate 02.
  • the first and/or the second magnetic cylinder 41; 42 is mounted between the frame walls of the machine frame in such a way that it can be removed for a change or to carry out set-up work, in particular without removing one of the frame walls.
  • the separation point is within the clear width between the frame walls
  • the first and the second alignment device 08; 18; 09; 19 at least one on the transport path behind or preferably in the area of the magnetic cylinder 41; 42 arranged drying and / or curing device 51; 52, e.g. B. a particularly narrow-band radiation dryer 51; 52 (such as UV dryer 51; 52), advantageously LED dryer 51; 52, in particular UV LED dryer 51; 52.
  • This is preferably arranged on the transport path in such a way that in the direction of the lateral surface of the at least one magnetic cylinder 41; 42 is directed in an angular range over which the substrate sheet 02 passes through the magnetic cylinder 41; 42 is promoted.
  • the drying and/or curing device 51; 52 to a point in the second half of the magnetic cylinder 41; 42 running transport route.
  • the works as a radiation dryer 51; 52 running drying and / or curing device 51; 52 preferably in a narrow-band wavelength range that promotes curing, e.g. B. in a wavelength band with a spectral half-width related to the radiant power of at most 50 nm, preferably at most 30 nm.
  • the radiation maximum is preferably at a wavelength of 385 ⁇ 25 nm, in particular 385 ⁇ 15 nm.
  • At least that of the first alignment device 08; 18 associated drying and / or curing device 51, but advantageously the two alignment devices 08; 18; 09; 19 assigned drying and/or curing device 51; 52 is or are preferably designed and/or set up in such a way that the substrate 02 viewed transversely to the transport direction T is only in sections, ie in several, e.g. B. in three to eight, in particular in four to seven, spaced sections in spaced tracks can be acted upon or is acted upon by radiation.
  • this can be done in that the radiation dryer 51; 52 running drying and / or curing device 51; 52 several, for example a number of three to eight, in particular four to seven, spaced-apart radiators 51.x; 52.x, e.g. B. dryer heads 51.x; 52.x, each comprising a single or a plurality of single radiation sources, e.g. B. LEDs may have.
  • the or at least a part of these dryer heads 51.x; 52.x can be displaced transversely to the transport direction T and/or the distance between them can be changed in or on the alignment devices 08; 18; 09; 19 arranged.
  • one or more dryer heads 51.x; 52.x out of service i. H. be deactivated and be spent, for example, in a peripheral parking position.
  • the substrate 02 can be acted upon in a plurality of spaced-apart sections in spaced-apart tracks, in that the radiation dryer 51; 52 running drying and / or curing device 51; 52 a one- or two-dimensional array of radiation sources arranged next to one another transversely to the transport direction T, e.g. B. LEDs, in particular UV-LEDs, which via control means in spaced groups 51.y; 52.y can be activated according to the tracks to be loaded, while between these groups 51.y; 52.y lying radiation sources remain deactivated.
  • these groups are 51.y; 52.y variable and/or configurable in their number and/or position and/or width via the associated control means.
  • the second alignment device 09; 19 associated drying and / or curing device 52 can in principle also with a across the substrate width continuously effective radiator with one or a plurality of radiation sources.
  • At least the first or both of the alignment devices 08; 18; 09; 19 is dimensioned or operated or operable in an advantageous embodiment in such a way that--coordinated with the exposure time during operation--only partial drying of the coating agent layer, d. H. an outer partial layer of the previously applied coating agent 11; 13 , is dried and the position of the near-surface particles perceived in the later image or security element 03 is essentially fixed.
  • a length-specific radiant power z. B at a maximum of 8 kW, in particular a maximum of 6 kW, per meter of substrate width, d. H. refers to one meter of substrate width of the substrate 02 to be treated, the substrate width meaning the extent of the substrate sheet 02 running transversely to the direction of transport T.
  • the associated drying and/or curing device 51; 52 scheduled or operationally from the magnetic cylinder 41; 42 can be parked in such a way, e.g. B. pivoted so that they are parked on the side of the employed drying and / or curing device 51; 52 clears the way for good accessibility or, in the case of planned or operational removal, the way for this.
  • This includes at least one on revolving traction means 58; 59 based conveyor 56; 57, which z. B. as a so-called chain gripper system 56; 57 is executed.
  • This preferably includes a circumferential traction means 58 on both sides of the frame; 59, e.g. B.
  • circulating chains 58; 59 which run transversely to the transport direction T and are only shown as an example at one point here gripper strips 67; wear 69
  • the substrate sheets 02 can be transported along the transport path and can be delivered to the subsequent conveying or pick-up means at the destination.
  • the substrate sheet 02 is received, e.g. g. from a conveying or receiving means of the first printing unit 06 or the first receiving device 08, and in the area where the substrate sheet 02 is delivered to the subsequent conveying or receiving means, e.g. B. on conveying or receiving means of the first alignment device 08 or on conveying or receiving means of the second printing unit 07, in each case a chain wheel 61; 62; 63; 64, also called chain gripper wheel.
  • the substrate sheets 02 are, for example, in the area of a first sprocket wheel 61 directly from the impression cylinder 28 of the first printing unit 06 or from holding means 66 provided on its periphery by the traction means 58; 59 entrained gripper strips 67 taken over the circulating traction means 58; 59 is transported to the first alignment device 08, where it is transferred directly to the single or first magnetic cylinder 42 or to the holding means 49 provided on the circumference in the area of a second chain wheel 62.
  • the substrate sheets 02 are picked up by the single or last magnetic cylinder 41 of the first alignment device 08 or its chain wheel 62 in the area of a third chain wheel 63 by gripper bars 69 of the second conveyor device 57; 56 and transported via the circulating traction means 59 to the second printing unit 07, where they are transferred in the area of a fourth chain wheel 64, if necessary to an upstream transport cylinder or preferably directly to the impression cylinder 38 of the second printing unit 07 or to holding means 68 provided in the area of its circumference .
  • the first conveying line 53 comprises both the first and second printing unit 06; 07 two printing units 23; 24; 33, 34
  • the second conveyor line 54 can be divided into a first and/or second conveyor line section 54.1; 54.2 basically based on a gradual transfer between cylinders and drums.
  • this conveyor section 54 is also equipped with at least one circulating traction mechanism 73; 74, in particular chains 73; 74, based conveyor 71; 72 which, as above, have sprockets 76; 77; 78; 79 as well as here, however includes gripper strips, not shown.
  • For transport from the second printing unit 07 to the alignment device 09 and from there to the product holder 27 via the respective sprockets 76; 77; 78; 79 and holding means 49 also provided on the magnetic cylinder 42 of the second alignment device 09 applies accordingly above with the difference that the substrate sheets 02 at the end of the second conveyor line section 54.2, e.g. B. before the end sprocket 79 is placed on a stack or attached to a transport cylinder upstream of the product receptacle 27 on the input side, e.g. B. a cooling cylinder or an inspection cylinder.
  • first conveyor section 53 between the two printing units 16; 17 is in at least one, preferably in both, of the conveyor line sections 53.1; 53.2 a conveyor device 81 based on a successive transfer between transport cylinders and/or transport drums; 82 provided (see e.g. 2 and 8 ).
  • At least one rotating transport body 83; 84 e.g. B. cylinder or drum 83; 84, in particular transport cylinder or drum 83; 84, with respective holding means 86; 87 on the circumference, e.g. B. gripper bars 86; 87, provided.
  • this is an odd number, preferably exactly one transport body 83; 84
  • the substrate sheets 02 are e.g. B. from the impression cylinder 28 of the first printing unit 16, preferably triple in size and comprising three holding means 66 on the circumference, or from holding means 66 provided on its circumference, to holding means 86 of a rotating transport body 83 directly adjoining downstream, and from this, e.g. B. transferred indirectly via further transport elements or preferably directly to the single or first magnetic cylinder 42 or to holding means 49 provided on the circumference.
  • the substrate sheets 02 are e.g. B.
  • first alignment device 18 on both sides of the first alignment device 18 as a conveyor 71; 72 only one, but preferably double-sized transport body 83; 84, e.g. B. as a transport cylinder 83; 84 or transport drum 83; 84, provided.
  • transport body 83; 84 e.g. B. as a transport cylinder 83; 84 or transport drum 83; 84, provided.
  • the conveyor section 54 located downstream of the second printing unit 17 and containing the second aligning device 19 can in principle also be designed on both sides of the aligning device 19 based on a transfer between cylinders and drums or - as described in the example above - two circulating traction means 73; 74-based conveyor 71; 72 (see e.g. 2 and 8 ).
  • the first printing unit 16 comprises only one printing unit 23.
  • first or second conveyor section 53.1; 53.2 of the first conveyor section 53 can be realized by a conveyor device based on a circulating traction mechanism, while the other, as described in the second exemplary embodiment, can be implemented as a gradual transfer between rotating transport bodies 83; 84 based is executed.
  • first or second conveyor line section 54.1; 54.2 of the second conveyor section 54 can be realized by a conveyor device based on a circulating traction means, while the other, as described in the second exemplary embodiment, can be implemented as a gradual transfer between rotating transport bodies 83; 84 based is executed.
  • first or the second conveyor section 53; 54 in the manner described above with a two conveyor line sections 53.1; 53.2; 54.1; 54.2 continuous conveying device 56; 71 be executed, while the other of the conveyor sections 53; 54 divided in a way mentioned above, both on traction means or on Transport body based or mixed, can be formed.
  • a drying and/or curing device 36 e.g. B. a radiation dryer 36, in particular a UV dryer 36, for thorough drying of the coating material 11 applied to the substrate 02; 13 provided.
  • an inspection device 37 is provided, which z. B. works in the incident light method and includes a directed to the point of impact in the transport path camera next to a directed onto the transport path light source. Substrate sheets 02" that are considered defective or have a faulty printed image can then be collected as waste 02" on one of the stacks, while so-called good sheets are placed on another stack.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Printing Methods (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)

Claims (15)

  1. Dispositif de fabrication d'éléments de sécurité (03) sur un substrat (02)
    - avec un premier groupe d'impression (21 ; 22) via lequel un substrat (02) acheminé le long d'un chemin de transport peut être et/ou est imprimé en utilisant un premier moyen de revêtement (11) qui contient des particules magnétiques avec une pluralité de premiers éléments d'image d'impression (12) espacés les uns des autres,
    - avec un second groupe d'impression (31 ; 32) par lequel le substrat (02) peut être et/ou est imprimé avec des seconds éléments d'image d'impression (14 ; 12) espacés les uns des autres en utilisant un second moyen de revêtement (13) qui contient des particules magnétiques,
    - avec un premier cylindre magnétique (41) agencé dans le chemin de transport en aval du premier groupe d'impression (21 ; 22), lequel cylindre magnétique comprend des éléments magnétiques (43) sur le pourtour pour l'alignement de particules magnétiques,
    - avec un premier équipement de séchage et/ou de durcissement (51) agencé dans le chemin de transport contre ou après le premier cylindre magnétique (41), par lequel le moyen de revêtement (11) qui contient des particules magnétiques des premiers éléments d'image d'impression (12) imprimés par le premier groupe d'impression (21 ; 22) est ou peut être séché et/ou durci au moins superficiellement et/ou au moins chacun pour partie,
    - avec un second cylindre magnétique (42) agencé en aval du premier cylindre magnétique (41), lequel comprend également des éléments magnétiques (43) pour l'alignement de particules magnétiques,
    - et avec un second équipement de séchage et/ou de durcissement (52),
    - dans lequel les éléments magnétiques (43) du premier cylindre magnétique (41) et/ou du second cylindre magnétique (42) sont agencés au niveau d'un corps de base de cylindre de façon ajustable individuellement ou en groupes par rapport à leur position axiale et/ou périphérique,
    caractérisé en ce que,
    - le second équipement de séchage et/ou de durcissement (52) est agencé contre ou après le second cylindre magnétique (42) dans le chemin de transport,
    - au moyen du second équipement de séchage et/ou de durcissement (52) au moins le second moyen de revêtement (13) de la pluralité de seconds éléments d'image d'impression (14) espacés les uns des autres imprimés sur le substrat (02) est et/ou peut être séché et/ou durci au moins superficiellement et/ou au moins chacun pour partie,
    - le second groupe d'impression (31 ; 32) est prévu dans le chemin de transport entre le premier et le second cylindre magnétique (41 ; 42),
    - et le premier et le deuxième équipement de séchage et/ou de durcissement (51; 52) est configuré pour solliciter un substrat (02) acheminé le long du chemin de transport, dans plusieurs pistes espacées axialement les unes des autres et modifiables dans leur espacement.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'équipement de séchage et/ou de durcissement (51 ; 52) agencé contre ou après le premier et/ou le second cylindre magnétique (41 ; 42) est conçu pour, au moment de son passage, solliciter par rayonnement un substrat (02) acheminé, vu transversalement à la direction de transport (T), par endroits, c'est-à-dire dans plusieurs pistes espacées les unes des autres.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'équipement de séchage et/ou de durcissement (51 ; 52) agencé contre et/ou après le premier et/ou le second cylindre magnétique (41 ; 42) est agencé au niveau du chemin de transport de sorte qu'il soit orienté avec son action dans la direction d'une surface d'enveloppe du cylindre magnétique (41; 42) concerné selon une plage angulaire dans laquelle la feuille de substrat (02) est acheminée de façon couchée sur le cylindre magnétique (41 ; 42).
  4. Dispositif selon la revendication 1, 2 ou 3, caractérisé en ce que des éléments donnant une image (39) ou groupes d'éléments donnant une image (39) sur le pourtour d'un cylindre de forme (23 ; 24) du premier groupe d'impression (21 ; 22) et des éléments donnant une image (39) ou groupes d'éléments donnant une image (39) sur le pourtour d'un cylindre de forme (33 ; 34) du second groupe d'impression (31 ; 32) sont agencés selon un même motif sur le cylindre de forme (23 ; 24 ; 33 ; 34) respectif de sorte que les éléments d'image d'impression (12) ou groupes d'éléments d'image d'impression (12) imprimés par le premier groupe d'impression (21; 22) en utilisant le premier moyen de revêtement (11) et les éléments d'image d'impression (14) ou groupes d'éléments d'image d'impression (14) imprimés en aval par le second groupe d'impression (31 ; 32) en utilisant le second moyen de revêtement (13) au moins se superposent complètement par paires.
  5. Dispositif selon la revendication 1, 2, 3 ou 4, caractérisé en ce qu'un cylindre de forme (23 ; 24) du premier groupe d'impression (21 ; 22) et/ou un cylindre de forme (33 ; 34) du second groupe d'impression (31 ; 32) comprend sur le pourtour dans plusieurs rangées qui se déroulent axialement et plusieurs colonnes qui se déroulent dans la direction périphérique des éléments donnant une image (39) ou groupes d'éléments donnant une image (39) agencés sous forme de matrice.
  6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que le premier cylindre magnétique (41) présente sur le pourtour un motif d'éléments magnétiques (43) correspondant au motif des éléments donnant une image (39) ou groupes d'éléments donnant une image (39) du cylindre de forme (23 ; 24) du premier groupe d'impression (21; 22) et/ou le second cylindre magnétique (42) présente sur le pourtour un motif d'éléments magnétiques (43) correspondant au motif des éléments donnant une image (39) ou groupes d'éléments donnant une image (39) du cylindre de forme (33 ; 34) du second groupe d'impression (31 ; 32) .
  7. Dispositif selon la revendication 2 et selon l'une des revendications 4, 5 ou 6, caractérisé en ce que les pistes actives espacées les unes des autres de l'équipement de séchage et/ou de durcissement (51; 52) qui agissent par endroits correspondent dans la position axiale avec des colonnes d'éléments donnant une image (39) ou groupes d'éléments donnant une image (39), lesquelles se déroulent dans la direction périphérique au niveau du cylindre de forme (23 ; 24 ; 33 ; 34), et/ou avec un nombre des copies (04) à fabriquer sur le substrat (02) transversalement à la direction de transport.
  8. Dispositif selon la revendication 1, 2, 3, 4, 5, 6 ou 7, caractérisé en ce que le premier groupe d'impression (21 ; 22) et le second groupe d'impression (31 ; 32) sont couplés ensemble via un premier trajet d'acheminement (53) qui transporte le substrat (02) sous forme de feuilles de substrat (02) individuelles et le conduit via le premier cylindre magnétique (41).
  9. Dispositif selon la revendication 1, 2, 3, 4, 5, 6, 7 ou 8, caractérisé en ce que le groupe d'impression (21 ; 22 ; 31 ; 32) respectif comprend sur le pourtour, en tant que cylindre donnant une image (23 ; 24 ; 33 ; 34), un cylindre de forme (23 ; 24 ; 33 ; 34) avec une pluralité d'éléments donnant une image (39) ou groupes d'éléments donnant une image (39), lesquels sont agencés, sur une longueur périphérique qui correspond à la longueur d'image d'impression, sous forme de matrice en plusieurs colonnes espacées les unes des autres à équidistance transversalement à la direction de transport (T) et, sur une largeur de cylindre qui correspond à la largeur d'image d'impression, en plusieurs lignes espacées les unes des autres à équidistance dans la direction de transport (T), dans lequel les éléments donnant une image (39) ou groupes d'éléments donnant une image (39) agencés sous forme de matrice sur un premier cylindre de forme (23 ; 24) dans au moins un premier groupe d'impression (21; 22) d'une première unité d'impression (06 ; 16) et les éléments donnant une image (39) ou groupes d'éléments donnant une image (39) sur un second cylindre de forme (33 ; 34) dans au moins un groupe d'impression (31 ; 32) d'une seconde unité d'impression (07 ; 17) sont agencés selon un même motif sur le cylindre de forme (23 ; 24 ; 33 ; 34) respectif de sorte que les éléments d'image d'impression (12) imprimés via les éléments donnant une image (39) ou groupes d'éléments donnant une image (39) agencés sous forme de matrice par le premier cylindre de forme (23 ; 24) sur le substrat (02) acheminé le long du chemin de transport par la machine (01; 01') en utilisant le premier moyen de revêtement (11) et les éléments d'image d'impression (14) imprimés via les éléments donnant une image (39) ou groupes d'éléments donnant une image (39) agencés sous forme de matrice par le second cylindre de forme (33 ; 34) sur le substrat (02) acheminé le long du chemin de transport vers la seconde unité d'impression (07 ; 17) en utilisant le second moyen de revêtement (13) au moins se superposent complètement.
  10. Dispositif selon la revendication 1, 2, 3, 4, 5, 6, 7, 8 ou 9, caractérisé en ce que le premier et/ou le second cylindre magnétique (41 ; 42) est monté entre des parois de bâti du bâti de machine de sorte qu'il puisse être retiré comme prévu pour un échange ou pour réaliser des opérations d'équipement.
  11. Machine à imprimer (01 ; 01') pour la fabrication en ligne d'éléments de sécurité (03) sur un substrat (02)
    - avec une présentation de matériau d'impression (26) depuis laquelle le substrat (02) est amené au traitement dans la machine à imprimer (01 ; 01'),
    - avec un dispositif qui forme un trajet de traitement pour traiter le substrat (02) qui comprend
    - un premier groupe d'impression (21 ; 22) par lequel un substrat (02) acheminé le long d'un chemin de transport peut être imprimé avec un premier moyen de revêtement (11) qui contient des particules magnétiques avec une pluralité de premiers éléments d'image d'impression (12) espacés les uns des autres,
    - un premier dispositif d'alignement (08 ; 18) conçu en tant que premier cylindre magnétique (41) et agencé dans le chemin de transport en aval du premier groupe d'impression (21 ; 22), lequel cylindre magnétique comprend des éléments magnétiques (43) sur le pourtour par lequel des particules contenues dans le premier moyen de revêtement (11) peuvent être alignées,
    - un premier équipement de séchage et/ou de durcissement (51) agencé dans le chemin de transport contre ou après le premier cylindre magnétique (41), par lequel le moyen de revêtement (11) qui contient des particules magnétiques des premiers éléments d'image d'impression (12) imprimés par le premier groupe d'impression (21 ; 22) peut être séché et/ou durci au moins superficiellement et/ou au moins chacun pour partie,
    - un second groupe d'impression (31 ; 32) par lequel le substrat (02) peut être imprimé, en aval du premier équipement de séchage et/ou de durcissement (51), avec des seconds éléments d'image d'impression (14) espacés les uns des autres avec un second moyen de revêtement (13) qui contient des particules magnétiques,
    - un second dispositif d'alignement (09 ; 19) conçu en tant que second cylindre magnétique (42), lequel comprend également des éléments magnétiques (43),
    - un second équipement de séchage et/ou de durcissement (52),
    - dans laquelle les éléments magnétiques (43) du premier cylindre magnétique (41) et/ou du second cylindre magnétique (42) sont agencés au niveau d'un corps de base de cylindre de façon ajustable individuellement ou en groupes par rapport à leur position axiale et/ou périphérique,
    - et avec une réception de produit (27) en aval pour recevoir le substrat (02) traité dans la machine à imprimer, caractérisée
    - en ce que le second groupe d'impression (31 ; 32) est agencé après le premier équipement de séchage et/ou de durcissement (51),
    - en ce que des particules magnétiques contenues dans le second moyen de revêtement (13) peuvent être alignées par le second cylindre magnétique (42),
    - en ce que le second équipement de séchage et/ou de durcissement (52) est agencé dans le chemin de transport contre ou après le second cylindre magnétique (42) et en ce que par ledit second équipement de séchage et/ou de durcissement au moins le moyen de revêtement (13) des seconds éléments d'image d'impression (14) peut être séché et/ou durci au moins superficiellement et/ou au moins chacun pour partie,
    - et en ce que le premier et/ou le deuxième équipement de séchage et/ou de durcissement (51; 52) est configuré pour solliciter un substrat (02) acheminé le long du chemin de transport, dans plusieurs pistes espacées axialement les unes des autres et modifiables dans leur espacement.
  12. Machine à imprimer selon la revendication 11, caractérisée en ce qu'entre le second dispositif d'alignement (09 ; 19) et la réception de produit (27) est prévu un équipement d'inspection (37) aligné sur le chemin de transport et/ou un autre équipement de séchage et/ou de durcissement (36) et/ou un équipement d'acheminement (71 ; 72) basé sur des moyens de traction (73 ; 74) périphériques, et/ou en ce que le premier et le second groupe d'impression (21 ; 22 ; 31 ; 32) sont respectivement des composantes de deux unités d'impression (06 ; 07 ; 16, 17) et au moins la seconde unité d'impression (07 ; 17) comprend à côté du second groupe d'impression (31; 32) au moins un autre groupe d'impression (32 ; 31).
  13. Machine à imprimer selon la revendication 11 ou 12, caractérisée en ce que les groupes d'impression (21 ; 22 ; 31 ; 32) sont conçus pour imprimer des feuilles de substrat (02) avec un nombre et/ou une longueur modifiables de rangées, qui se déroulent transversalement à la direction de transport (T), de copies (04) à imprimer les unes à côté des autres et/ou avec un nombre et/ou une largeur modifiables de colonnes, qui se déroulent dans la direction de transport (T), de copies (04) à imprimer les unes derrière les autres.
  14. Machine à imprimer selon la revendication 11, 12 ou 13, caractérisée en ce qu'un cylindre de forme (23 ; 24) du premier groupe d'impression (21 ; 22) qui applique le premier moyen de revêtement et un cylindre de forme (33 ; 34) du second groupe d'impression (31; 32) qui applique le second moyen de revêtement sont ou peuvent être entraînés en rotation de façon mécaniquement indépendante l'un de l'autre dans au moins une situation de fonctionnement.
  15. Machine à imprimer selon la revendication 11, 12, 13 ou 14, caractérisée par la réalisation de la machine à imprimer en tant que machine à imprimer des feuilles et/ou pour la fabrication en ligne d'éléments de sécurité (03) sur un substrat (02) en forme de feuille.
EP19783236.3A 2018-11-08 2019-09-26 Dispositif et machine d'impression pour produire un element de securite sur un substrat Active EP3877182B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018127936.1A DE102018127936A1 (de) 2018-11-08 2018-11-08 Vorrichtung, Druckmaschine und Verfahren zur Herstellung eines Sicherheitselementes auf einem Substrat
PCT/EP2019/076088 WO2020094291A1 (fr) 2018-11-08 2019-09-26 Dispositif, machine à imprimer et procédé pour produire un élément de sécurité sur un substrat

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EP3877182A1 EP3877182A1 (fr) 2021-09-15
EP3877182B1 true EP3877182B1 (fr) 2022-09-07

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US (1) US11214052B2 (fr)
EP (1) EP3877182B1 (fr)
JP (1) JP6991394B2 (fr)
CN (1) CN113490597B (fr)
DE (1) DE102018127936A1 (fr)
WO (1) WO2020094291A1 (fr)

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AU2021295043A1 (en) * 2020-06-23 2023-02-16 Sicpa Holding Sa Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles
US11858253B2 (en) 2020-10-01 2024-01-02 Koenig & Bauer Ag Machine for generating optically variable image elements
DE102020125728B3 (de) 2020-10-01 2022-04-07 Koenig & Bauer Ag Vorrichtung zum Ausrichten von magnetischen oder magnetisierbaren Partikeln sowie Maschine zur Erzeugung optisch variabler Bildelemente
DE102020125727B3 (de) 2020-10-01 2022-04-07 Koenig & Bauer Ag Vorrichtung zum Ausrichten von magnetischen oder magnetisierbaren Partikeln sowie Maschine zur Erzeugung optisch variabler Bildelemente
DE102021110864B4 (de) * 2021-04-28 2023-03-02 Koenig & Bauer Ag Vorrichtung zum Ausrichten von magnetischen oder magnetisierbaren Partikeln sowie Maschine zur Erzeugung optisch variabler Bildelemente
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EP3877182A1 (fr) 2021-09-15
CN113490597A (zh) 2021-10-08
CN113490597B (zh) 2022-07-29
DE102018127936A1 (de) 2020-05-14
US11214052B2 (en) 2022-01-04
JP2021529692A (ja) 2021-11-04
JP6991394B2 (ja) 2022-01-12
WO2020094291A1 (fr) 2020-05-14

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