EP3877182A1 - Dispositif, machine à imprimer et procédé pour produire un élément de sécurité sur un substrat - Google Patents

Dispositif, machine à imprimer et procédé pour produire un élément de sécurité sur un substrat

Info

Publication number
EP3877182A1
EP3877182A1 EP19783236.3A EP19783236A EP3877182A1 EP 3877182 A1 EP3877182 A1 EP 3877182A1 EP 19783236 A EP19783236 A EP 19783236A EP 3877182 A1 EP3877182 A1 EP 3877182A1
Authority
EP
European Patent Office
Prior art keywords
substrate
printing unit
printing
elements
cylinder
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
EP19783236.3A
Other languages
German (de)
English (en)
Other versions
EP3877182B1 (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
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
    • B41F13/08—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
    • 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
    • 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

Definitions

  • the invention relates to a device, a printing press and a method for producing a security element on a substrate, in particular one
  • Security element with a coating agent containing magnetic or magnetizable particles according to the preamble of claims 1, 14 and 19.
  • 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 lacquer, the device comprising a cylinder with a plurality of elements which effect a magnetic field on the circumference, and one In the transport path, the dryer is directed to a point at which the substrate has not yet left the cylinder.
  • EP 1 745 940 B1 describes a two-stage coating of an article for security printing in a two-stage printing or painting of an article with ink or color 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 color, preferably of a lower concentration, applied with a magnetic field and dried.
  • the second printing / painting takes place on the same side of the article above the printed image of the first pattern, in the second embodiment on the other side of the article, which is transparent in this case.
  • CN 105034570 B a substrate is used for the production of magnetic printed matter. or printed several times with magnetic ink and then passed successively over two magnetic drums, where the magnetic ink is oriented in different subregions of the printing section by the two magnetic drums. Drying takes place only after passing through the magnetic drums.
  • the differently oriented sub-areas are different from one another in the first exemplary embodiments
  • Alignment is dried, the overlapping section receives the orientation from the last magnetic drum.
  • this procedure is intended to enable more complex magnetic patterns and, at the same time, to reduce the formation of deformations in the substrate, as would be the case with conventional repeated printing, orienting and drying.
  • WO 2016/030819 A1 relates to a combined printing machine for screen printing with magnetically variable color and subsequent orientation as well as drying and subsequent intaglio printing. and a subsequent screen printing.
  • a the arrangement of more than one screen printing unit and more than one magnet unit.
  • EP 2 484 455 A1 discloses one of several exemplary embodiments
  • Security element with two layers of magnetic ink printed, oriented and dried one above the other, the first hardened coating being able to be produced, ie applied, oriented and hardened after the second hardened coating, or vice versa.
  • the steps of applying, orienting and hardening can be repeated as required to produce further coatings on the substrate and / or the coatings.
  • magnetic ink is only printed in one pass, this is oriented and dried in one partial area, and then also in another partial area oriented and dried.
  • the invention has for its object to provide a device, a printing press and a method for producing a security element on a substrate.
  • Coating agent of the first printed image elements printed by the first printing unit is and / or can be dried and / or hardened at least superficially and / or at least in part, but preferably in each case in its full extent, one of the first magnetic cylinder and the drying and / or Curing device
  • downstream second printing unit one in the transport path downstream of the second printing unit and also magnetic elements on the circumference
  • the substrate is conveyed inline between the individual processing stations via appropriate conveying devices.
  • the substrate is first printed using a first coating agent containing magnetic particles, with several printing elements in the downstream transport path, particles contained in the first coating agent previously applied to the substrate are aligned by exposure to magnetic field lines and then the alignment at least superficially and / or at least partly dried and / or hardened. Subsequently, the substrate is downstream using a second one containing magnetic particles
  • Coating agent printed with second printed image elements such that the first and second printed image elements - z. B. in the substrate plane - at least overlap before particles contained in the second coating agent previously applied to the substrate are aligned by renewed action of magnetic field lines and finally the second coating agent after aligning the particles contained at least superficially and / or at least each a part is dried and / or hardened
  • the or at least some of the magnetic elements of the first magnetic cylinder and / or the second magnetic cylinder are arranged individually or in groups on a basic cylinder body with respect to their axial and / or circumferential position.
  • the forme cylinder, in particular screen printing cylinder, the first printing unit applying the first coating agent and a forme cylinder, in particular screen printing cylinder, which is the second printing unit applying the second coating agent are basically independent of, but advantageously also in combination with, the above advantageous embodiment - at least in one Operating situation - mechanically driven independently of one another in a rotary manner, preferably in each case by a motor which is mechanically independent of the interacting counter-pressure cylinder, e.g. B. electromotive single drive, rotationally driven. This can be used, for example, in a particularly simple manner
  • Circumferential registers are placed between the two corresponding print image elements and / or a setup and / or shut-off angle position of the form cylinders, in particular screen printing cylinders, which are driven independently of one another, are approached independently of one another.
  • the dryer is dimensioned or operated or operable in such a way that - depending on the exposure time during operation - only partial drying of the coating agent layer, ie. H. an outer partial layer of the coating, dried and thus in
  • the at least one printing unit is designed for printing the lower layer with a printing form which is set up along with the printing or repeating length of the substrate to print several — in particular equivalent — spaced-apart columns of printing picture elements spaced apart from one another — in particular equivalent — transverse to the transport direction.
  • an area coverage of the printed image applied as the lower layer on the usable area given by the printed image length and printed image width on the substrate is less than 50%, preferably less than 30%.
  • Magnetic elements are preferably on the first and / or second
  • Magnetic cylinders with respect to their axial and / or circumferential position arranged individually or in groups on a basic cylinder body.
  • first and / or second magnetic cylinder is between
  • Frame walls of the machine frame are mounted so that it can be removed - in particular without removing one of the frame walls - for a change or for carrying out set-up work. Further details and variants can be found in the following exemplary embodiments, which, either individually or in groups - provided there is no contradiction - either with one another or with one of the above-described embodiments for the device
  • the machine and / or the method can be combined.
  • Fig. 1 shows a first embodiment for a machine for producing a
  • Fig. 2 shows a second embodiment of a machine for producing a
  • FIG. 3 shows a schematic representation of a substrate printed in first printed image elements with a first optically variable coating agent, in a plan view and b) in cross section;
  • FIG. 4 shows a schematic illustration of the first printed image elements from FIG. 3 after at least partial magnetic alignment to a first image content perceptible in plan view a) in plan view and b) in FIG
  • FIG. 5 shows a schematic illustration of the substrate from FIG. 3 with second optically variable ones via the first printed image elements
  • Coating agent printed image elements a) in plan view and b) in Cross-section;
  • FIG. 6 shows a schematic illustration of the security element after coating with the second coating agent and at least partially aligning the magnetic or magnetizable particles of the second printed image elements a) in plan view and b) in cross section;
  • FIG. 7 shows an enlarged illustration of the printing units and each with a subsequent alignment device from FIG. 1;
  • FIG. 8 shows an enlarged illustration of the printing units and each with a subsequent alignment device from FIG. 2;
  • FIG. 9 shows an oblique view of an embodiment of a forme cylinder with a multiplicity of printing elements provided in the manner of a matrix in rows and columns on the circumference;
  • Fig. 10 is an oblique view of an embodiment of a magnetic cylinder with several
  • Ring elements which each carry a plurality of magnets in the circumferential direction
  • Figure 1 1 is an oblique view from below of a dryer effective in sections in the first embodiment.
  • Fig. 12 is an oblique view from below of a sectionally effective dryer in the second embodiment.
  • a machine 01; 01 ' e.g. B. printing machine 01; 01 ' , advantageous rotary printing press 01; 01 in particular security printing machine 01; 01 ' , for producing optically variable picture elements 03, in particular security elements 03, on a substrate 02, e.g. B. a web or sheet-shaped printing material 02, comprises a first application device 06; 16, e.g. B. a printing unit 06; 16, through which optically variable coating agent 1 1, z. B. optically variable printing ink 1 1 or paint 1 1, at least one job, z. B. pressure point, on at least a first side of the substrate 02, z. B. of
  • Printing material 02 over the entire surface or preferably in partial areas in the form of the first
  • Print image elements 12 can be applied, a second application device 07; 17, e.g. B. a printing unit 07; 17, through which at least a second optically variable
  • Coating agent 13 e.g. B. optically variable printing ink 13 or paint 13, at least one job, 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, and also between the first and second application device 06; 07; 16; 17 device 08; arranged in the transport path; 18 for aligning the optically variable and applied to the substrate 02
  • These devices 08; 18; 09; 19 are also briefly referred to below as alignment devices 08; 18; 09; 19 designated.
  • the prior to treatment by the respective alignment device 08; 18; 09; 19 by the upstream application device 06, 16; 07; 17 printed image elements 12; 14 from variable coating agent 1 1; 13 may correspond in size and position to the optically variable picture elements 03 to be produced or may also be smaller or larger than these, and may even extend over several areas 04.
  • the first and second are
  • Print image elements 12; 14 applied at least partially to one another on the substrate 02, in particular printed on the substrate 02, in such a way that the first and the second printed image elements 12; 14 at least overlap in pairs, for example like this, that the first at least not via the second printed image elements 12; 14 protrude, preferably such that the first and second printed image elements 12; 14 on top of each other and in cover with each other In the case of larger ones
  • Print image elements 12; 14 is not, for example, on the entire with optically variable coating agent 1 1; 13 coated surface by aligning an optically variable image information, a motif or a character string, in the optically variable
  • Image element 03 is generated.
  • image information is indicated by way of example as a circular disk or spherical cap stamped into the printing element 12 below by magnetic alignment with a three-dimensional effect.
  • the particles responsible for the optical variability are in each case here.
  • Concentration and / or color effect can be provided in the respective carrier medium.
  • the machine 01; 0T is used to produce benefits 04, e.g. B. securities 04, in particular banknotes 04, or of multiple benefits 04, z. B. printed the printed images of securities 04 and in the machine 01; 0T 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
  • Plastic polymer or be formed therefrom by a hybrid product Before coating in the above. first application device 06; 16 have been uncoated or have already been coated, it can be unprinted or has already been printed one or more times or else has been mechanically processed.
  • a substrate section i.e. H. a longitudinal section of web-shaped substrate 02 or an arc of a
  • arcuate substrate 02 e.g. B. substrate sheet 02 or in particular
  • Printing material sheet 02 preferably several, z. B. three to eight, especially four to seven, benefit 04, z. B. banknotes to be produced 04, in a line next to each other and several such lines of use 04 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 (e.g. indicated in FIGS. 3 to 6).
  • the as a printing press 01; 0T executed machine 01: 0T can basically two or possibly more printing units 06; 16; 07; 17 with one or more each
  • Printing units 21; 22; 31; 32 of any printing process include. In preferred embodiments,
  • the printer comprises two printing units 06; 16; 07; 17 each with at least one printing unit 21 operating according to the flexographic printing method or preferably according to the screen printing method; 22; 31; 32, through which the first or second optically variable coating agent 1 1; 13, e.g. B. on the same first side of the substrate 02, is applied or can be.
  • the printing processes mentioned, in particular the screen printing process make it possible to apply a thicker layer than other printing processes.
  • the printout of the “first side” of the substrate 02 or substrate 02 is chosen arbitrarily and is intended to be that side of the
  • Coating agent 11 for the production of the first printing picture elements 12 and the application of the second coating agent 13 for the production of the second printing picture elements 14 also basically take place 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 must be provided or set up accordingly.
  • the printing press 01; 01 ' further comprises at least one substrate 26, e.g. B. a roll unwinder or preferably a sheet feeder 26, of which the Z. B. web or preferably sheet-shaped substrate 02 - optionally via further printing or processing units - the first optically variable coating agent 11; 13 applying printing unit 06; 16, e.g. B. flexographic or in particular screen printing unit 06;
  • substrate 26 e.g. B. a roll unwinder or preferably a sheet feeder 26 of which the Z. B. web or preferably sheet-shaped substrate 02 - optionally via further printing or processing units - the first optically variable coating agent 11; 13 applying printing unit 06; 16, e.g. B. flexographic or in particular screen printing unit 06;
  • Screen printing unit 21; 22, is or can be supplied, and downstream of the second printing unit 07; 17 a product holder 27 for holding the in the machine 01; 01 'processed and / or processed substrate 02, e.g. B. a rewinder for web-shaped substrate 02 or a stack delivery 27 in the preferred case of arched substrate 02.
  • each printing unit 06; 16; 07; 17 only one printing unit 21; 22; 31; 32 can be provided, are in an advantageous embodiment in at least the second printing unit 07; 17, e.g. B. flexographic or in particular pressure unit 07; 17 several, in particular two printing units 31; 32, e.g. B. flexographic or in particular screen printing units 31; 32, provided between a forme cylinder 33; 34, e.g. B. one
  • Screen printing cylinder 33; 34, and a - for example, common counter-pressure cylinder 38 two pressure points for z. B. form the same side of the substrate 02 (see examples in Fig. 7 and Fig. 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 greater layer thickness. It can be done 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 more, in particular two printing units 21; 22, in particular screen printing units 21; 22, which each include a 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. a same side of the substrate 02 form (see also exemplary in Fig. 1 and Fig. 7).
  • the first printing unit 06; 16 with only one printing unit 21, in particular screen printing unit 21, which is arranged between a forme cylinder 23, e.g. B. a screen printing cylinder 23, and a common impression cylinder 28 forms a printing point (see for example in Fig. 2 and Fig. 8).
  • the respective impression cylinder 28; 38 is preferred with triple circumference, i.e. H. to accommodate three substrate sheets 02 in the circumference.
  • the respective printing unit 21 preferably comprises; 22; 31; 32 as imaging cylinder 23; 24; 33; 34 a forme cylinder 23; 24; 33; 34 with a plurality of, in particular identical and / or the same, imaging elements 39, z.
  • These elements 39 or printing subjects 39 are in the case of a printing unit 21 operating according to flexographic printing; 22 n type of high-pressure relief and, in the preferred case, a printing unit 31; 32 designed in the manner of stencils.
  • the repetitive imaging is in the case of a printing unit 21 operating according to flexographic printing; 22 n type of high-pressure relief and, in the preferred case, a printing unit 31; 32 designed in the manner of stencils.
  • Elements 39 or groups are on the operational imaging cylinder 23; 24; 33; 34 provided in the raster of the benefits 04 to be printed on its scope. Printing in the first printing unit 06; 16 via the imaging elements 39 - preferably using the first coating agent 11
  • a printing form of the forme cylinder 23; 24 comprises, based on the usable area of the substrate 02 to be printed, an area effective for the ink transfer, eg. B. raised relief area or permeable stencil area of less than 50%, in particular less than 30%.
  • the imaging elements 39 arranged in a matrix 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 is preferably arranged in the same pattern in such a way that the first forme cylinder 23; 24 on the along the transport path through the machine 01; 0T-conveyed substrate 02 using the first coating agent 11 via the z.
  • Print image elements 12; 14 protrude, preferably the first and second printed image elements 12; 14 are each in cover.
  • one or the forme cylinders 23; 24, in particular screen printing cylinder 23; 24, the one or more printing units 21; 22 of the first printing unit 06 and one, or the forme cylinder 33; 34 in particular
  • Screen printing cylinder 33; 34 one or more printing units 31; 32 the second Printing unit 07 in at least one operating situation, e.g. B. at least in the context 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 which is mechanically independent of the interacting impression cylinder, e.g. B. single electric motor drive, rotationally driven or drivable.
  • a motor which is mechanically independent of the interacting impression cylinder, e.g. B. single electric motor drive, rotationally driven or drivable.
  • a circumferential register can be set in a particularly simple manner between the two corresponding printed image elements and / or a set-up and / or standstill angle position of the form cylinders 23; 24; 33; 34, in particular screen printing cylinder 23; 24; 33; 34, can be started independently. Basically, these can
  • Individual drives 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 main drive driving the production plant.
  • these individual drives are set up and provided for the relevant forme cylinders 23; 24; 33; 34 also mechanically independent of one another in production operation, preferably also mechanically independently of the respective impression cylinder 28; 38 to drive in rotation.
  • the first and the second alignment device 08; 18; 09; 19 each comprise at least one magnetically active cylinder 41 lying in the transport path; 42, in particular magnetic cylinder 41; 42, over which the substrate sheets 02 are guided in at least an angle of rotation range of at least 30 °, preferably at least 60 °, and thereby the magnetic particles of the previously applied and not yet dried
  • outgoing pattern of magnetic field lines are oriented.
  • the respective magnetic cylinder 41; 42 has one in the area of its outer circumference
  • a plurality of elements 43, or magnetic elements 43, which bring about a magnetic field and which serve to orientate at least some of the magnetic or magnetizable particles of the coating material 11; 13 serve.
  • the magnetic elements 43 can be formed by permanent magnets with or without engraving, by electromagnets or by combinations of one or more permanent and / or one or more electromagnets and are independent of whether a magnetic element 43 is a single one or a combination of several Permanent and / or electromagnets, sometimes also referred to below briefly as “magnets” 43.
  • 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 a same pattern in such a way that the places of action of the magnets 43 of the first magnetic cylinder 41 and the places of action of the magnets 43 of the second
  • Magnet cylinders 42 overlap at least all of them, preferably are essentially in register with one another. The is with regard to the side and
  • Circumferential register correct relative axial and angular position between the first and second magnetic cylinder 41; 42 assumed as given in the transport path or
  • the magnetic elements 43 can - for. B. according to the pattern and the arrangement of the benefits 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 and preferably positionable in the axial direction ring elements 44 may be arranged or arranged, in each case in or on these ring elements 44
  • At least one, preferably several, e.g. B. between two and twelve, advantageously between five and ten, magnetic elements 43 in the circumferential direction one behind the other and preferably in the circumferential direction can be arranged or arranged (see, for example, FIG. 10).
  • the ring elements 44 are in the area of their outer circumference, for example by circumferential covers 46, z. B. with the ring ribs integrally connected ceilings 46 or cover plates 46, closed, in which, for. B. nursing openings 47 and not designated recesses are provided at the respective location of the magnetic elements 43 are (indicated by way of example for a part of the right ring element 44 in FIG. 10).
  • a cover plate extending axially over all the ring elements 44 can be provided, which at the relevant points comprises the cutouts and / or openings 47.
  • the sucking openings 47 in particular suction ducts located underneath, are in line connection with a vacuum pump.
  • a vacuum pump For example, in the magnetic cylinder 41; 42 a line running centrally in the axial direction
  • a rotary leadthrough 48 to a vacuum line or vacuum source and on the cylinder side are in line connection with the suction openings 47 or suction channels.
  • the magnetic cylinder 41; 42 can for the case of web-shaped substrate 02 without
  • arcuate substrate 02 are on the circumference of the cylinder 41; 42 preferably holding elements 49, for. B. gripper 49 of a so-called gripper bar, through which a cylinder 41; 42 substrate sheet 02 to be conveyed is taken up with its leading end and during a rotation of the cylinder 41; 42 can be held over an angular range.
  • a magnet cylinder 41; 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 - in particular without removing one of the frame walls - for a change or for carrying out set-up work.
  • at least on the drive side there is a torsionally rigid detachable connection between magnetic cylinder 41; 42 or cylinder pin and an adjoining drive shaft are provided, the
  • first and the second alignment device 08; 18; 09; 19 in each case 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.
  • a particularly narrow-band radiation dryer 51; 52 such as UV dryer 51; 52
  • LED dryer 51; 52 in particular UV LED dryer 51; 52.
  • This is preferably arranged on the transport path such that it is in the direction
  • Lateral surface of the at least one magnetic cylinder 41; 42 is directed in an angular range over which the substrate sheet 02 through the magnetic cylinder 41; 42 is funded.
  • the drying and / or curing device 51; 52 to a position in the second half of the magnetic cylinder 41; 42 running transport route. To avoid unnecessary heating, the works as
  • 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 assigned 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 only in sections, ie in a plurality, for example B. in three to eight, in particular in four to seven, spaced-apart sections in spaced-apart tracks can be acted upon or exposed to radiation.
  • the position of the tracks in machine 01 corresponds; 01 ' with the axial position of the rows of printed or to be printed, running in the transport direction T.
  • Print image elements 12; 14 or corresponds or is aligned with the axial position of the circumferential direction on the forme cylinder 23; 24; 33; 34 trending rows of imaging elements 39 and / or with the axial position of the associated
  • Magnetic cylinder 41; 42 provided rows of magnetic elements 43.
  • this can take place in that the radiation dryer 51; 52 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 individual radiation sources, for. B. LEDs can have.
  • Preferably, or at least part of these dryer heads 51.x; 52.x can be displaced transversely to the transport direction T and / or its distance from one another 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 d. H. be deactivated and, for example, be brought into a parking position on the edge.
  • the substrate 02 can be loaded in several spaced-apart sections in spaced-apart tracks by using the radiation dryer 51; 52 executed drying and / or curing device 51; 52 a one- or two-dimensional array of radiation sources extending across the printing width and arranged next to one another transversely to the transport direction T, e.g. B. LEDs, in particular UV LEDs, which, via control means, in 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 preferably 51. y; 52. y can be varied and / or configured in their number and / or position and / or width via the assigned control means.
  • the second alignment device 09; 19 assigned drying and / or
  • Hardening device 52 can in principle also be used with a substrate width continuously effective radiator with one or a plurality of radiation sources.
  • Substrate sheet 02 means.
  • the assigned drying and / or curing device 51; 52 of the magnetic cylinder 41; 42 so parked, z. B. pivoted so that they are in the parked state on the side of the drying and / or
  • Curing device 51; 52 clears the way for good accessibility or, in the case of planned or operational removal options, the way for this.
  • the first alignment device 08; 18 in the transport path on a conveyor section 53 between a further upstream here the first
  • Conveyor line 53 (see exemplary FIGS. 1 and 7) comprises at least one on rotating traction means 58; 59 based conveyor 56; 57, which, for. B. as a so-called chain gripper system 56; 57 is executed. This preferably includes both
  • gripper bars 67; 69 wear.
  • the gripper bars 67; 69 leading ends of substrate sheets 02 can be gripped at a pick-up location, the substrate sheets 02 can be transported along the transport path and delivered to the subsequent conveying or receiving means at the destination. It is preferably located at least in the area of the receiving location for the substrate sheet 02, e.g. B. from a conveyor or receiving means of the first printing unit 06 or the first receiving device 08, and in the region of the delivery of the substrate sheet 02 to the subsequent conveyor or receiving means, for. B. on conveying or receiving means of the first alignment device 08 or on conveying or receiving means of the second printing unit 07, each a sprocket 61; 62; 63; 64, also called chain gripper wheel.
  • the substrate sheets 02 are, for example in the region of a first sprocket 61, directly from the impression cylinder 28 of the first printing unit 06 or from holding means 66 provided on its circumference by means of the traction means 58; 59 carried gripper bars 67 taken over the revolving traction means 58; 59 to the first
  • Alignment device 08 transported, and there in the region of a second sprocket 62 directly to the single or first magnetic cylinder 42 or to the circumference
  • the substrate sheets 02 are in the region of a third sprocket 63 by gripper bars 69 of the second
  • the impression cylinder 38 of the second printing unit 07 or to holding means 68 provided in the area of its circumference are transferred.
  • Conveying path 53 both the first and the second printing unit 06; 07 two printing units 23; 24; 33, 34.
  • the second conveyor section 54 can be in a first and / or second
  • Conveyor section 54.1; 54.2 basically be based on a successive transfer between cylinders and drums.
  • this conveyor section 54 is also provided with at least one on rotating traction means 73; 74, in particular chains 73; 74, based conveyor 71; 72, which, as above, take-over and transfer-side sprockets 76; 77; 78; 79 as well as here Includes gripper bars, not shown.
  • both gripper bars not shown.
  • Alignment device 09 as well as in the conveyor section 54.2 between the second alignment device 09 and the product receptacle 27, such on rotating
  • Traction means 73; 74 based conveyor 71; 72 provided. For the transport from the second printing unit 07 to the alignment device 09 and from this to the
  • Product intake 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 end of the second conveyor section 54.2 z. B. stored in front of the end sprocket 79 on a stack or to an upstream of the product holder 27 upstream transport cylinder, z. 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
  • Conveyor device 81 based on transport cylinders and / or drums; 82 is provided (see, for example, FIGS. 2 and 8).
  • At least one rotating transport body 83 is located between the impression cylinder 28 of the first printing unit 16 and the first or only magnetic cylinder 41 of the first alignment device 18 and between the last or only magnetic cylinder 41 of the first alignment device 18 and the second printing unit 17; 84, e.g. B. cylinder or drum 83; 84, in particular transport cylinder or drum 83; 84, with respective holding means 86; 87 in circumference, e.g. B. gripper bars 86; 87 provided.
  • the substrate sheets 02 are z. B. from - preferably single-sized and a holding means 49 on the circumference - last or only magnetic cylinder 41 of the first alignment device 18 or provided on its circumference
  • Transfer printing unit 17 or of holding means 68 provided on its circumference see, for example, FIGS. 2 and 8).
  • the first alignment device 18 is on both sides as a conveyor 71; 72 each have only one, but preferably double-sized transport body 83; 84, e.g. B. as a tramsport 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 alignment device 19 can in principle also be on both sides of the
  • Alignment device 19 based on a transfer between cylinders and drums or - as described in the example above - two on rotating traction means 73; 74 based conveyor 71; 72 (see, e.g., FIGS. 2 and 8).
  • Alignment device 19 based on a transfer between cylinders and drums or - as described in the example above - two on rotating traction means 73; 74 based conveyor 71; 72 (see, e.g., FIGS. 2 and 8).
  • this second embodiment includes the first
  • Conveying path 53 the first printing unit 16 only one printing unit 23.
  • the 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 rotating traction means, while the other as in the second
  • Embodiment described as a successive transfer between rotating transport bodies 83; 84 is executed based.
  • Embodiment can be realized by a conveyor device based on a rotating traction means, while the other as described in the second embodiment as a successive transfer between rotating transport bodies 83; 84 is executed based.
  • the first or the second conveyor section 53; 54 in the manner described above with one over both conveyor sections 53.1; 53.2; 54.1; 54.2 continuous conveyor 56; 71 while the other of the conveyor lines 53; 54 divided in a manner mentioned above, both on traction means or on Transport body based or mixed, can be formed.
  • Radiation dryer 88; 89 (such as UV dryer 88; 89), advantageously LED dryer 88; 89, in particular UV LED dryer 88; 89 may be provided.
  • the second is in an advantageous further development in the transport path downstream
  • Incident light method works and, in addition to a light source directed at the transport path, includes a camera directed at its point of impact in the transport path. Substrate sheets 02 “considered defective or as a defective printed image can then be used as
  • Waste 02 can be collected on one of the stacks while so-called good sheets are placed on another stack.
  • Printing unit flexographic printing unit, screen printing unit
  • Printing unit flexographic printing unit, screen printing unit
  • Printing unit flexographic printing unit, screen printing unit
  • Drying and / or curing device radiation dryer, UV dryer, LED dryer, UV LED dryer
  • Transport body cylinder, drum, transport cylinder, transport drum Transport body, cylinder, drum, transport cylinder, transport drum holding means, gripper bar
  • Drying and / or curing device radiation dryer, UV dryer, LED dryer, UV LED dryer
  • Drying and / or curing device radiation dryer, UV dryer, LED dryer, UV LED dryer transport direction

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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)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

L'invention concerne un dispositif pour produire des éléments de sécurité (03) sur un substrat (02), comprenant un premier mécanisme d'impression (21 ; 22) permettant d'imprimer et/ou imprimant sur un substrat (02) transporté le long d'un trajet de transport, une pluralité de premiers éléments d'image d'impression (12) espacés les uns des autres, à l'aide d'un premier agent de revêtement (11) renfermant des particules magnétiques, un premier cylindre magnétique (41) agencé en aval du premier mécanisme d'impression (21 ; 22) sur le trajet de transport et comportant des éléments magnétiques (43) en périphérie, un deuxième cylindre magnétique (42) agencé en aval du premier cylindre magnétique (41) sur le trajet de transport et comportant également des éléments magnétiques (43) en périphérie, ainsi qu'un dispositif de séchage et/ou de durcissement (52) qui est associé au deuxième cylindre magnétique (42) ou suit celui-ci sur le trajet de transport et qui permet de sécher et/ou durcir, au moins en surface et/ou au moins en partie, au moins l'agent de revêtement (13) d'une pluralité de deuxièmes éléments d'image d'impression (14) imprimés sur le substrat (02) et espacés les uns des autres. Un deuxième mécanisme d'impression (31 ; 32) est prévu sur le trajet de transport, entre le premier et le deuxième cylindre magnétique (41 ; 42) et permet d'imprimer et/ou imprime sur le substrat (02) les deuxièmes éléments d'image d'impression (14 ; 12) espacés les uns des autres, à l'aide du deuxième agent de revêtement (13) renfermant des particules magnétiques. Un dispositif de séchage et/ou de durcissement (51) agencé en amont du deuxième mécanisme d'impression (31 ; 32) est associé au premier cylindre magnétique (41) ou suit celui-ci sur le trajet de transport et permet de sécher et/ou durcir, au moins en surface et/ou au moins en partie, l'agent de revêtement (11), renfermant des particules magnétiques, des premiers éléments d'image d'impression (12) imprimés par le premier mécanisme d'impression (21 ; 22).
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

Publications (2)

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

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EP19783236.3A Active EP3877182B1 (fr) 2018-11-08 2019-09-26 Dispositif et machine d'impression pour produire un element de securite sur un substrat

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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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DE102023122880A1 (de) * 2023-08-25 2025-02-27 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit Aushärtevorrichtung und Kühleinrichtung
TW202541920A (zh) 2023-12-20 2025-11-01 瑞士商西克帕控股有限公司 用於產生光學效應層的製程
TW202532144A (zh) 2023-12-20 2025-08-16 瑞士商西克帕控股有限公司 用於產生光學效應層的製程
TW202532145A (zh) 2023-12-20 2025-08-16 瑞士商西克帕控股有限公司 用於產生光學效應層的製程
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Publication number Publication date
EP3877182B1 (fr) 2022-09-07
JP2021529692A (ja) 2021-11-04
WO2020094291A1 (fr) 2020-05-14
US20210316545A1 (en) 2021-10-14
CN113490597B (zh) 2022-07-29
CN113490597A (zh) 2021-10-08
DE102018127936A1 (de) 2020-05-14
JP6991394B2 (ja) 2022-01-12
US11214052B2 (en) 2022-01-04

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