EP3060409A1 - Produit imprimé pourvu d'au moins un signe imprimé, procédé de fabrication et film de transfert - Google Patents

Produit imprimé pourvu d'au moins un signe imprimé, procédé de fabrication et film de transfert

Info

Publication number
EP3060409A1
EP3060409A1 EP14792428.6A EP14792428A EP3060409A1 EP 3060409 A1 EP3060409 A1 EP 3060409A1 EP 14792428 A EP14792428 A EP 14792428A EP 3060409 A1 EP3060409 A1 EP 3060409A1
Authority
EP
European Patent Office
Prior art keywords
printed product
transfer film
film
main body
printed
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
EP14792428.6A
Other languages
German (de)
English (en)
Other versions
EP3060409B1 (fr
Inventor
Franziska Peinze
Olga Kulikovska
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.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
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 Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Priority to EP20173260.9A priority Critical patent/EP3725537A1/fr
Publication of EP3060409A1 publication Critical patent/EP3060409A1/fr
Application granted granted Critical
Publication of EP3060409B1 publication Critical patent/EP3060409B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38278—Contact thermal transfer or sublimation processes using ink-containing structures, e.g. porous or microporous layers, alveoles or cellules
    • 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
    • B42D25/324—Reliefs
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/06—Printing methods or features related to printing methods; Location or type of the layers relating to melt (thermal) mass transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/30—Thermal donors, e.g. thermal ribbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/16—Braille printing

Definitions

  • the present invention relates to a printed product provided with at least one printing feature, to a method for producing the printed product provided with the at least one printing feature, and to a transfer film.
  • the present invention relates to a provided with at least one printing feature value or security product, a process for its preparation and a transfer film, which can be used for the production of a value or security product.
  • Value or security products may be, for example, a personal document, a check card, a non-personalized entitlement card, such as a ticket or a form of payment, or a value or security element intended for product assurance.
  • Value or security products serve to verify the identity of a person or thing or a claim, for example, for payment of a sum of money or for the issue of a product or service.
  • the product therefore contains security features whose imitation is extremely difficult or even practically impossible.
  • the product such as banknotes, consists of a not readily available material.
  • security features may be formed by special colors, for example luminescent or optically variable colors, optical elements, such as holograms, tilt images, kinegrams, lens or prism arrays, also guilloches, mottled fibers, security threads and others.
  • it is also necessary that the value or security documents are easy to produce.
  • EP 1 518 708 B1 describes a thermal protective layer transfer layer which serves, for example, for applying to an image.
  • This transfer layer is initially on a substrate film.
  • the transfer layer is formed by a layer sequence, namely, a release liner, a writable protective sheet, and a heat-sensitive resin adhesive sheet.
  • the writeable protective layer is porous.
  • the transfer layer is transferred from the substrate film to the image by a thermal transfer process. This achieves good moisture and solvent resistance and good writability with an aqueous ink.
  • DE 601 31 180 T2 discloses a security sheet as a printable substrate which contains a transparent or translucent layer.
  • This layer is applied to a paper sheet and is formed by a composition producible in an aqueous medium.
  • This composition contains colloidal silica in the form of an aqueous dispersion, an elastic binder, also in the form of an aqueous dispersion, optionally a crosslinking agent and possibly other additives used in the paper industry. The applied composition is then dried.
  • DE 10 2010 035 890 A1 specifies a method for producing a security document with a microporous, laminatable printing film.
  • the film has cavities for receiving ink on at least one surface.
  • the ink is printed flat in at least one area on the surface. This film is assembled and laminated with other films to produce a document body.
  • a printing feature printed security feature
  • a valuable or security product which is particularly tamper-proof and which is preferably also perceivable haptically.
  • Such a security feature should be realized with simple means and without complex apparatus. be sierbar.
  • the printed product can be a value or security product.
  • the value or security product may be a value or security document or a security element or transfer element, i. an element which is permanently connected, for example, a sticker, label or the like, to an object to be protected against counterfeiting, counterfeiting or falsification.
  • value or security product includes, for example, a passport, identity card, driver's license or another ID card or an access control card, a vehicle registration document, vehicle registration document, visa, check, Means of payment, in particular a banknote, a check, bank, credit or cash card, customer card, health card, chip card, a company card, proof of entitlement, membership card, gift or shopping voucher, bill of lading or other proof of entitlement, tax stamp, postage stamp, ticket, ( Saint -) To identify a token, adhesive label (for example for product protection) or another ID document.
  • Such products are value or security documents.
  • a product according to the invention is also a security element which has a printed security feature of the type according to the invention (printing feature) and which can be permanently connected to an object to be protected, for example a good or a security document, for example a sticker, Label or the like.
  • the value or security document may be in ID 1, ID 2, ID 3, or any other format, such as a booklet form, such as a passport-like item. It is generally formed by a laminate of a plurality of document layers, which are connected in register under the influence of heat and under increased pressure.
  • These products should meet the standardized requirements, for example ISO 10373, ISO / IEC 7810, ISO 14443.
  • the product layers consist of a carrier material suitable for lamination.
  • the value or security product may be formed from a polymer selected from a group comprising polycarbonate (PC), especially bisphenol A polycarbonate or a polycarbonate formed with a geminally disubstituted bis (hydroxyphenyl) cycloalkane, polyethylene terephthalate (PET ), whose derivatives, such as glycol-modified PET (PETG),
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PET glycol-modified PET
  • PEN Polyethylene naphthalate
  • PVC polyvinyl chloride
  • PVB polyvinyl butyral
  • PMMA Polymethyl methacrylate
  • PI polyimide
  • PVA polyvinyl alcohol
  • PS polystyrene
  • PVP polyvinylphenol
  • PP polypropylene
  • PE polyethylene
  • TPE thermoplastic elastomers
  • TPU thermoplastic polyurethane
  • ABS acrylonitrile Butadiene-styrene copolymer
  • the product can also be made of several of these materials, in particular if it is formed of several layers and the individual layers are formed of different materials. It preferably consists of PC or PC / TPU / PC.
  • the polymers may be either filled or unfilled. In the latter case they are preferably transparent or translucent. If the polymers are filled, they are opaque.
  • the above information relates both to films to be joined together and to liquid formulations applied to a precursor, such as a protective or topcoat.
  • the product is preferably prepared from 3 to 12, preferably 4 to 10, films.
  • the films may carry additional print layers arranged on the outside of the value or security product or arranged internally thereon. A laminate formed in this way can finally be coated on one or both sides with the protective or topcoat or with a film.
  • the film may be a volume hologram, a film with a surface hologram (for example a kinegraphic element) or a scratch-resistant film.
  • the term "pattern" includes, but is not limited to, a somewhat distributed distribution of elements that provide an optical impression to the human eye and / or a tactile sensation perceivable by a person in a two-dimensional arrangement on one or more surfaces, which give a self-contained representation, For example, an image, picture element, character, in particular an alphanumeric character, a symbol, coat of arms, a line, formula or the like.
  • the pattern may contain information and therefore form an identifier.
  • the visual impression is perceptible by contrasting surface areas, wherein a contrast between individual pattern elements by different hues, brightness or different surface textures (gloss, roughness or the like) is generated.
  • pattern element is called, it is to be understood as a component / element of a pattern.
  • the printed product according to the invention has a printed product main body with a first and a second main side. At least one of the two main sides has at least one pattern element arranged in the form of a pattern.
  • the pattern forms a printing feature according to the present invention.
  • the at least one pattern element contains a contrast substance at least in each case in a layer region arranged internally in the at least one pattern element. This contrast substance is visually perceptible.
  • the layer region is in particular in the form of a layer and extends over part of the printed product main body, i. forms in particular a position of the main body.
  • the at least one pattern element is formed raised on the respective main page. It is permanently connected to the printed product main body.
  • the contrast substance does not have to be limited to the layer area.
  • the method according to the invention comprises the following method steps: a. Providing a cavitated film and providing a printed product main body having first and second major sides and b. Loading the cavities of the film from a loading side forming surface of the film with a contrast substance, so that the contrast substance distributed in a layer region at the loading side in the film.
  • the film is a transfer film.
  • the method has the following further method step: c. Transferring at least one partial surface region of the transfer film to the print product main body by mechanical and preferably additional thermal action on the at least one partial surface region, wherein the at least one partial surface region of the transfer film is non-detachably connected to the surface on the loading side with the printed product main body and inserted on the respective main side Pattern is formed with at least one raised pattern element.
  • the transfer film according to the invention has the open cavities towards the loading side of the transfer film.
  • the cavities are loaded with the contrast substance.
  • the printed product may in particular be a value or security product.
  • the printed product main body is a precursor of the value or security product, i. an article which can be converted into the value or security product (the printed product) by carrying out process steps (a), (b) and (c).
  • the printed product according to the invention, the inventive method and the transfer film according to the invention allow, for example, a simple production of an individualizing value or security product, because the transfer film can be transferred to the printed product main body in an individualized manner with simple means and forms the printing feature there.
  • This printing feature is visually perceptible by its loading of the contrast substance, in particular a color substance, and moreover tactile (tactile) perceptible (tactile), but only if the printing feature on the printed product main body is formed by a pattern of raised pattern elements the thickness of the pattern elements on the printed product main body is sufficiently large (at least about 30 ⁇ , better at least about 100 ⁇ thick and preferably at most 500 ⁇ ).
  • the loading of the transfer film with the contrast substance can be realized very easily with conventional material application methods, for example with a dipping method.
  • the individual pattern elements to be formed on the respective main page of the printed product main body can then be produced by a conventional thermal transfer method. Since the contrast substance is not on the outside of the pattern elements but in their internal volume, it is further ensured by the method according to the invention that the individualizing visual impression caused by the contrast substance is caused by the contrast substance internally contained in the raised pattern elements. Furthermore, it has also ensures that despite the loading of the cavities with the contrast substance ensures that the raised pattern elements firmly adhere to the main sides of the printed product main body.
  • the contrast substance in the pattern elements forms no layer at the interfaces between them and the printed product main body, which would allow a simplified separation of the pattern elements from the main body, since the contrast substance is not located at the interfaces. Rather, the contrast substance is distributed at least in a part of the inner volume of the pattern elements. Therefore, a contrast substance can also be selected which would otherwise facilitate detachment of the pattern elements from the main body.
  • the entire transfer film is not joined to another substrate, there with further films to form a laminate. Rather, only the partial surface areas of the transfer film, which correspond to the pattern elements of the pattern to be formed, are transferred to the printed product main body.
  • the individualizing structuring is therefore realized according to the invention by means of the thermal transfer process on the example finished laminate printed product main body.
  • a lamination step as in DE 10 2010 035 890 A1 is therefore unnecessary. Therefore, this method of individualization can also be carried out in an issuing office for value or security documents, which has the advantage for security reasons that individualized documents do not have to be transported outside of security areas.
  • the cavities in the transfer film absorb the contrast substance. Penetration is mediated by capillary forces.
  • the contrast substance penetrates into the transfer foil and is held firmly there. If, after the loading of the cavities in the transfer film, there is still excess contrast substance on the loading side of the transfer film, this can be removed in a preferred embodiment of the present invention so that the contrast substance is ultimately only in the cavities. This can be done, for example, by doctoring off / wiping off excess contrast substance.
  • the contrast substance may be a coloring substance or another visually perceptible substance, for example a metal.
  • a coloring matter is a paint containing one or more pigments, or ink containing one or more dyes.
  • the color substance may have a spectral color, black or gray hue.
  • a metal can be precipitated from an ion of this metal as well as a reducing agent for this solution containing solutions in the cavities, so that a shiny metallic effect results.
  • a Fehling's solution (tartrate copper (II) complex in water) additionally containing a sugar or an aldehyde may be used to deposit copper or an alkaline silver nitrate and ammonia, and an aqueous solution containing silver or a sugar or aldehyde become. To generate the metal in the cavities, the transfer film is then heated.
  • a conventional coating method may be employed, for example, a printing method such as an offset or screen printing method, a doctor blade method, a roll coating method, a dipping method, a curtain casting method, a spin coating method or the like.
  • the partial surface areas of the transfer film are transferred to these transfer sheet areas on the print product main body to form the pattern elements by mechanical action (pressing the transfer film on the print product main side) and thermal action (applying heat to the transfer film). wherein the layer region in which the cavities with the contrast substance contained therein come into contact with the main side of the printed product main body.
  • the partial surface areas are then connected to the main body inseparably.
  • the transfer film is pressed locally in the part surface areas corresponding to the pattern elements to be formed on the surface of the printed product main body and also heated. This leads in particular to the non-detachable connection when the material of the transfer film is formed by a thermoplastic material, so that it melts at least partially when heated.
  • the transfer film may also be chemically functionalized at the contact side, so that it connects to the main body by supplying thermal energy.
  • thermal action which is used for non-detachably connecting the partial surface region of the transfer film to the printed product main side
  • an action by means of electromagnetic radiation for example UV radiation. This can cause a chemical reaction at the interface between the partial surface area of the transfer film and the printed product main page, which leads to the permanent bond.
  • a tool is used with which the transfer film is pressed area by area on the main side of the printed product main body.
  • a tool in particular a printing tool, is used, for example, in printing devices for the thermal transfer process, for example a stamp suitable for this purpose.
  • the tool is supplied with heat, which then transfers it locally to the transfer film, or the tool is designed to generate the heat itself, for example via a resistance heater or an ultrasonic vibration device.
  • a separate tool for the heating for example an electromagnetic radiation source, for example a laser device, whose radiation is absorbed in the transfer foil so that it heats up.
  • the transfer film may contain special absorber agents, in particular substances which absorb selectively in the infrared spectral range (thermosensitive substances). These are preferably located in a region in the transfer film, which is arranged adjacent to the loading side.
  • the transfer sheet in the patch area may first be brought into contact with the main side of the main body, and then the contacted patch area may be heated.
  • the partial surface area is optionally additionally pressed onto the main side of the main body. After the non-detachable bonding, the part of the transfer film which has not been bonded to the main body, ie, does not correspond to the partial area, may be mechanically separated from the bonded partial areas of the transfer film which now form the pattern elements and lifted off the main body.
  • the mechanical separation of the partial surface areas of the transfer film from the film residual occurs, for example, by a punching operation which is carried out by means of the tool for pressing and supplying the heat energy. If the heating takes place by means of electromagnetic radiation or electromagnetic radiation is used to trigger a chemical reaction, it can be passed through suitable pressing elements for this purpose.
  • the pressing elements must be transparent / translucent for this purpose for the electromagnetic radiation. It can also be provided in addition to mechanically and / or chemically remove parts of the transfer film not connected to the main body, for example in a brushing and / or washing process, if these are not connected to the film residue.
  • the spatial distribution of the contrast substance in the inner layer region given by the cavities can be eliminated, for example by melting the material of the partial surface region of the transfer film so that the contrast substance is evenly distributed in the layer region.
  • the spatial distribution given by the cavities is maintained or partially preserved.
  • the material of the printed product main body may be any of the materials mentioned above for these products, in particular in the case of production of a value or security product.
  • other materials and materials come into consideration, such as composites, especially fiber composites, from the materials mentioned and also filled materials, the composites and filled materials such as a base material of one of the materials mentioned and fillers or fibers such as polymer, Paper (cellulose), ceramics, glass, metal or the like are formed.
  • the fillers may be formed by fibers, grains or other particles.
  • the printed product main body is formed of or may contain a polymeric material selected from PET and PC, which polymer may additionally contain fillers, for example for coloring.
  • the printed product main body can be a precursor for a value or security product, in particular for a value or security document.
  • the print product main body may be formed of a plurality of layers in the form of a preferably monolithic laminate.
  • the individual layers can each be opaque or transparent or translucent.
  • the precursor may already have other security features and / or an internally arranged electrical circuit, for example an RFID circuit with an RFID chip and an antenna, and / or electronic display elements on the outside.
  • the printed product main body can be present in the format intended for end use or in a multiple use, from which, after carrying out the method according to the invention, the printed product equipped with the printing feature is formed by separating, for example cutting or punching, in the format provided.
  • the printed product main body can furthermore have the thickness required for this purpose: it can preferably have at least 500 ⁇ m and especially preferably at least 700 ⁇ amount.
  • the thickness is preferably at most 2 mm and particularly preferably at most 1 mm.
  • the thickness can be adapted to the respective requirements.
  • the thickness in these cases may preferably be at least 50 ⁇ m, more preferably at least 200 ⁇ m, and most preferably at least 700 ⁇ m. It may preferably be at most 5 mm, more preferably at most 2 mm, and most preferably at most 1 mm.
  • the material of the transfer film may also be any of the materials mentioned above for value or security products, in particular in the case of production of a value or security product. In principle, however, other materials are also suitable for the transfer film, with the materials and materials mentioned for the printed product main body basically being able to be used.
  • the transfer film is transparent or translucent (translucent), so that the contrast substance is visible through the transfer film. Therefore, the material that makes up the transfer film is transparent or translucent.
  • the transfer film can contain dyes or fillers, provided that the transparency or translucency of the transfer film is at least not significantly impaired.
  • the transfer sheet is formed of or may contain a polymeric material selected from PET and PC.
  • the thickness of the transfer film may preferably be at least 2 ⁇ m, more preferably at least 2.5 ⁇ m, even more preferably at least 5 ⁇ m and most preferably at least 7 ⁇ m.
  • the transfer film is preferably at most 250 ⁇ , more preferably at most 100 ⁇ , more preferably at most 75 ⁇ , even more preferably at most 50 ⁇ and most preferably at most 25 ⁇ thick. You can, for example, 10 ⁇ thick.
  • the cavities in the transfer film can be produced during their production or introduced into the latter after their production.
  • the film may be provided with an expandable material during extrusion, which outgases at elevated temperature and produces the cavities.
  • inorganic or organic materials which have a porosity may also be incorporated in the polymer material of the transfer film, for example silicon dioxide or aluminum oxide, which may be present in the form of nanoscale particles.
  • larger particles with correspondingly small cavities can be used, for example zeolites.
  • filled materials are given by way of example in WO 2008/01 1919 A1 as a coating material which contains inorganic nanoparticles. Therefore, this document is hereby incorporated in full, at least in any case with regard to the production of such materials, in the disclosure of the present application.
  • DE 10 2010 035 890 A1 likewise shows a process for producing a microporous film.
  • a particulate material is extruded into a film.
  • the particles have defined cavities. It may be, for example, zeolites or fullerenes.
  • a suspension of polymer particles for example of PC particles, is applied to a film carrier. The liquid components of the suspension are then evaporated so that the remaining PC particles combine to form a porous film.
  • the film carrier may consist of PC or at least contain this.
  • the PC particles can additionally be crosslinked by means of suitable present crosslinkers. Therefore, this document is hereby incorporated in full, at least in any case with regard to the production of such materials in the disclosure of the present application.
  • the abovementioned polymers which are suitable for the formation of the transfer film can also be used.
  • a foamed composition of a resin emulsion may be used. Such a production process with an acrylic ester resin is described in DE 600 36 341 T2. Therefore, this document is hereby incorporated in full, at least in any case with regard to the production of such a polymer material in the disclosure of the present application.
  • Foam stabilizers and thickeners are produced. If the cavities are formed therein only after the production of the transfer film, they can be produced by perforation processes, for example by laser drilling (laser ablation, either thermally with a C0 2 laser or by photolytic decomposition of the polymer material with a UV (excimer) )Laser.
  • the cavities may be formed by holes, depressions, cavities, channels, pores, recesses, cavities and the like.
  • the film material may be porous. The cavities can completely penetrate the transfer film or only partially.
  • the cavities are preferably characterized by being elongated and having a length to diameter / thickness ratio of at least 5, more preferably at least 10, even more preferably at least 20, even more preferably at least 50, and most preferably at least 100. This ratio can be up to 5000, preferably up to 2000, more preferably up to 500 and most preferably up to 100.
  • the cavities have, in particular, a size in the micrometer range, ie the diameter / thickness of the cavities is in the range from 1 ⁇ m to 1000 ⁇ m, preferably in the range from 1 ⁇ m to 500 ⁇ m and very particularly preferably in the range from 1 ⁇ m to 100 ⁇ .
  • the cavities can also be smaller: their size can be, for example, at least 50 nm and more preferably at least 100 nm and at most 1000 ⁇ , better at most 500 ⁇ and best at most 100 ⁇ .
  • the cavities on the loading side of the transfer film preferably have the smallest possible opening cross-section, so that the surface portion of the transfer film material on this side as big as possible.
  • the area fraction of the opening cross section of the cavities is preferably less than 50%, more preferably less than 40%, even more preferably less than 30%, even more preferably less than 20% and most preferably less than 10%, based on the area of the transfer film on this page.
  • the openings of the cavities are preferably distributed as evenly as possible on the loading side.
  • the cavities are located exclusively in a layer region adjacent to the loading side in the transfer film, wherein this layer region does not occupy the entire volume of the transfer film but only a layer portion thereof.
  • the cavities are open to the surface on the loading side, so that the contrast substance can be introduced into them.
  • the layer area may preferably occupy half the thickness of the transfer film or a smaller or larger proportion, for example, in a range of 5% to 40% or 60% to 90% of the thickness.
  • a material of the transfer film which has no cavities is located above this layer region.
  • Such a material may, for example be prepared by applying a cavities layer on a support.
  • the above-mentioned methods are suitable for this purpose (see, for example, the methods given in EP 1 1518 708 B1, WO 2008/01 1919 A1 and DE 10 2010 035 890 A1).
  • the contrast substance in the printing feature also appears in an examination not only with the naked eye but also by means of a microscope as internal.
  • the contrast substance may be formed by any colorant suitable for a printing process, for example a printing ink containing the color-forming agents in the form of inorganic and / or organic pigments, or a printing ink containing the color-forming agents in the form of inorganic and / or organic dyes , Furthermore, the coloring matter may also be formed by a luminescent agent. The pigments or dyes may also be luminescent. Examples of printing inks and printing inks are given in DE 10 2007 052 947 A1. Therefore, this document is hereby incorporated in full, at least in any case with regard to the colors and inks specified therein, in the disclosure content of the present application.
  • the luminescent agents can likewise be formed by inorganic and / or organic pigments and / or luminescent substances. They may be, for example, photoluminophores (fluorophores, phosphorophores), electroluminophores or Antistokes luminophores.
  • the color substance contains other conventional ingredients, which also includes a printing ink or a printing ink, for example, binders, solvents and other conventional ingredients.
  • the binder is a PC derivative. Such PC derivatives are also given in DE 10 2007 052 947 A1. Also, therefore, this document is hereby incorporated in full, at least in any case with respect to the PC derivatives specified therein as a binder in the disclosure of the present application.
  • the solvent can be aqueous or organic. In particular, it may be a mixture. The mixture can be purely organic or contain additional water. Such solvents are also given in DE 10 2007 052 947 A1. Also, therefore, this document is hereby incorporated in full, at least in any case with respect to the solvents specified therein, in the disclosure of the present application.
  • the transfer film has regularly arranged thin regions (reduced thickness of the transfer film compared with the rest of the film), so that the partial surface areas to be applied along thin regions which surround the partial surface regions are mechanically slightly separated from the remainder of the transfer film. can be separated.
  • the partial surface areas of the non-applied film residue can be separated very easily and precisely, because the thin areas represent desired separation points.
  • the grid of the thin areas and the raised areas preferably extends over the entire area of the transfer film. As a result, a controlled shaping of the pattern elements is achieved.
  • the thin areas are arranged, for example, in a hexagonal grid (honeycomb structure), a regular edge structure of the pattern areas corresponding to this grid results.
  • the thin regions preferably do not extend completely through the transfer film. They are two-dimensionally rastered, ie formed in a preferably regular two-dimensional arrangement. Accordingly, the intermediate raised areas are regularly arranged.
  • the thin areas may be formed, for example, by continuous trenches or by mutually spaced depressions or perforations.
  • the trenches may additionally have perforations.
  • the thin areas can either be formed exclusively by trenches, for example, have a uniform depth, or in addition to trenches with uniform depth perforations that completely penetrate the material of the film.
  • the cavities, recesses, recesses, recesses, openings, hollows and the like forming the thin regions are preferably in a regular one-dimensional or two-dimensional arrangement.
  • the thin areas may be formed in the form of a square, rectangular, parallelogram-like, hexagon-shaped, or even curved, borderline groups crossing each other at a predetermined arbitrary angle.
  • Grid cells are formed by the grid of the thin areas (grid cells between the thin areas form pixels in raised form, so that a pixelated transfer film formed by the thin areas in grid form is formed).
  • the pixels may be 'dot-shaped' or in the form of stripes or in some other form raised above the thin areas.
  • the minimum dimensions of the grid cells are predetermined by the desired fineness of the film element. The more precisely the contours of the film element are to be traced, the finer the grid of the thin areas must be formed.
  • the grid grid cells with lateral dimensions of 50 ⁇ to 500 ⁇ , preferably from 70 ⁇ to 200 ⁇ , on.
  • the depth of the depressions or similar is determined by the total thickness of the film.
  • the Residual thickness should be so small that the film preferably tears easily only in the thin regions. For example, the remaining thickness of 5 ⁇ to 200 ⁇ , more preferably 30 ⁇ to 100 ⁇ , amount.
  • the thin regions may be formed by material removal or material transformation, for example by an etching or embossing process, after the production of the transfer film.
  • the thin areas can also already be produced during the production of the transfer film, for example by targeted material build-up.
  • the printing features to be formed on the printed product main body may be screened or not screened. Any raised print features can be created on the main body. Therefore, it is possible not only to create the raised printing features in a single design, for example, for a larger set of value or security documents common to all of these documents, but also to form an individualized design of the printing feature for each individual document.
  • the raised printing features can also be designed in the form of individualizing, in particular personalizing, markings, i. in the form of identifiers that reproduce, for example, individualizing data of a person or of an object to which the value or security document is assigned, either in plain text or in encrypted form. For example, in this way, the name or another characteristic of the person may be exalted.
  • the raised printing feature can encode information.
  • the raised marking can be represented by alphanumeric characters or, more preferably, Braille, in particular Braille.
  • the raised print feature can be an authentication feature.
  • the raised printing feature may also be a verification or authentication feature.
  • a schematic cross-sectional view for explaining the method steps of the method according to the invention; (a) providing the cavities comprising transfer film; (b) loading the cavities with the contrast substance; (c) placing the loaded transfer film on a printed product main body; (d) pressing a printing tool onto the transfer film and permanently bonding a partial area of the transfer film to the printed product main body; (e) removing the unconnected remainder of the transfer sheet from the printed product main body; a schematic cross-sectional view of a printing feature provided with a printing product according to the invention;
  • FIG. 1 Top views of embodiments of printed products according to the invention provided with printing features; (a) representation of alphanumeric characters; (b) representation of a surface hatching; (c) representation of a two-dimensional distribution of euro symbols; (d) presentation of Braille writing; (e) presentation of a signature; schematic representation of the production of a transfer film with a cavitated layer area.
  • like reference numerals designate elements having the same function or like elements.
  • FIGS. 1 a, 1 b A typical example of the formation of a printed product according to the invention provided with one or more printing features is a value or security document, for example an identity card 100.
  • a value or security document for example an identity card 100.
  • FIGS. 1 a, 1 b This map is representative of other printed products.
  • This card is for example assembled as a laminate of a plurality of inner polymer layers 140, 140 ', 160.
  • FIG. 1 b shows a cross-sectional view along the section I - I in FIG. 1 a, which represents the individual polymer layers and outer protective lacquer layers 150 which are intended to protect against abrasion.
  • On an inner layer 160 is an electronic RFID
  • the individual layers are shown separately, but are no longer distinguishable in the laminated state, since they are fused together during lamination (monolithic structure).
  • the polymer layers may consist of, for example, PC and / or PET or contain these materials.
  • the single ones Layers can be unfilled or filled with fillers. In the latter case, they are opaque, otherwise transparent.
  • the protective varnish is transparent, so that underlying information is visible from the outside. If the pattern elements on the card according to the present invention are to be perceived haptically, they must be significantly thicker than the protective lacquer coating that they cover.
  • the card 100 has an upper side 101 and a lower side 102. On the top there is a face image 1 10 of the holder of the card and two data fields, namely a first data field 120 and a second data field 130 with card and owner data in plain text and / or in coded form.
  • the data in the first and in the second data field are produced by printed layers, which are arranged on an outer inner layer 140 of the document, but immediately below the outer protective lacquer layer 150.
  • the card 100 further includes an additional panel 170 in which a copy of the facial image of the card's owner is located.
  • This facial image is in the form of a printing feature 200 according to the present invention and is formed by a pattern of a plurality of raised pattern elements made by the method of the invention.
  • the method according to the invention for producing the printed product provided with the at least one printing feature 200, namely the card 100, is shown schematically in a stepwise manner in FIG. 2:
  • a transfer sheet 300 having cavities 310 and a printed product main body 400 (FIG. 2 c) are provided on which the printing feature 200 according to the present invention is to be produced.
  • This step corresponds to process step (a) of the process according to the invention.
  • the main body may, for example, be an almost completed identity card which already has all the other security features, including the externally visible printing features, such as the facial image 110 of the card holder and the data of the card owner in the data fields 120, 130; but not yet the printing feature according to the present invention and, if appropriate, the protective lacquer layers 150 to be applied externally.
  • the card can already be present in the final format.
  • the film 300 having the cavities 310 is designed as a transfer film, ie it is partially applied in a further step of the method according to the invention on a main side 410 of the main body 400 and inextricably connected to the main body.
  • the transfer film can be formed, for example, from PC or PET and have a thickness of, for example, 10 ⁇ m. However, it can also be thicker, especially if it is to form a tactile security feature, in this case, for example, at least 30 ⁇ and, for example, at most 500 ⁇ .
  • the transfer film is preferably transparent, but may also be translucent.
  • the transfer film may be colored, but this coloring should not affect the visual perception of the contrast material to be introduced into the cavities 310.
  • the transfer film has a top side 301 and a bottom side 302.
  • the transfer film 300 has on its underside cavities 310, which, for example, as shown in FIG. 2a, are formed starting from the underside 302 in the form of elongate channels and extend into the film interior. Since these channels are loaded with a contrast substance in a further method step (see FIG. 2 b), the underside, to which the channels are open, is designed as a loading side of the transfer film. The channels do not extend completely through the transfer film but end within the transfer film. The region in which the cavities are located forms the layer region 320 in the transfer film. This layer region is located in the lower region of the transfer film adjacent to its loading side. The layer region thus extends exclusively onto a layer-shaped subregion of the transfer film.
  • the channels may be formed by a method in which the layer region formed by the channels is applied to a support 600, the channels forming in this process of deposition (see FIG. 5). The entirety of layer area and carrier then forms finally the transfer film.
  • the channels 310 are loaded with a contrast substance K (FIG. 2b).
  • the contrast substance K may be, for example, a coloring matter, for example an ink.
  • Such an ink is exemplified in DE 10 2007 052 947 A1. It contains, for example, a PC derivative as a binder in an organic solvent mixture and a pigment, for example, pigment black 28.
  • the channels 310 of the transfer film 300 are loaded, for example, with a roll coating method with this ink.
  • the transfer sheet prior to loading the channels, the transfer sheet has first been conditioned in an atmosphere formed by a vapor of the solvent mixture of the ink to saturate the channels with the solvent mixture. This ensures that the ink easily penetrates into the channels. Due to the chemical affinity of the PC ink to the PC foil, the capillary forces the ink into the channels.
  • the thus loaded transfer sheet 300 is brought into contact with the printed product main body 400, namely, the precursor of the ID card (Fig. 2c).
  • Individual partial surface regions 330 of the transfer film 300 loaded with the contrast substance K are then connected inextricably by means of a tool 500 suitable for this purpose to the precursor 400 of the card 100.
  • Fig. 2d the portion is shown in dashed lines delimited by the rest of the transfer sheet.
  • the film remainder 300 'not connected to the precursor 400 is then lifted off (FIG. 2e).
  • This process corresponds to process step (c) of the process according to the invention.
  • the loaded transfer film 300 is placed on a main side 410 of the precursor 400 such that the layer region 320 in which the channels 310 are located comes into contact with this main side.
  • a thermal printing tool 500 sets on a partial surface area 330 of the transfer film
  • this tool can be a heated needle which punches out a small partial area of the transfer film on a pixel-by-pixel basis. For this purpose, this punch is on the top
  • the transfer ribbon remainder 300 is lifted off again (FIG. 2e).
  • a pattern element 350 remains undetachably connected to the card surface.
  • the With the ink K loaded layer area 320 Due to the partial melting of the transfer film material, the channels 310 are no longer present. That's what the ink in the
  • Layer area 320 distributed. Since it is located on the side of the element adjacent to the card surface and is still overlaid by a non-loaded area, the ink is arranged inside the pattern element. This can also be checked with a microscope.
  • FIG. 3 shows a cross section of several subelements of the raised printing feature 200 produced on the card 100 by the method according to the invention.
  • the individual sub-elements form pattern elements 350 of the pattern forming the printing feature.
  • the pattern elements are raised above the card surface 410 and connected to it inseparably. They have a below and thus arranged inside layer region 320 of the contrast substance, here the ink K on.
  • these pattern elements are separately visually perceptible with the human eye and, if the thickness of the pattern elements is sufficiently large (greater than 30 ⁇ m), can also be perceived haptically.
  • FIG. 4 various raised patterns 360 made of a plurality of possible pattern elements 350 produced by the method illustrated in Fig. 2 are shown.
  • Fig. 4a a group of several alphanumeric characters is shown, each character being formed by a single pattern element 350 or by a group of a plurality of seamlessly juxtaposed pattern elements.
  • the tool 500 used to form the respective pattern element must be formed in the shape of the pattern element to be formed.
  • the individual pattern elements can each have the same shape, for example a hexagonal or circular shape, so that they can always be produced with the same tool.
  • Fig. 4a group of several alphanumeric characters is shown, each character being formed by a single pattern element 350 or by a group of a plurality of seamlessly juxtaposed pattern elements.
  • the tool 500 used to form the respective pattern element must be formed in the shape of the pattern element to be formed.
  • the individual pattern elements can each have the same shape, for example a hexagonal or circular shape, so that they can always be produced with the same tool.
  • each line may be formed by a single pattern element 350 or by a plurality of seamlessly arranged adjacent pattern elements.
  • Fig. 4c a group of ' €' characters is shown.
  • the transfer film 300 used for this purpose must be at least 30 ⁇ thick. Preferably, it is about 100 ⁇ thick, so that the font can be easily perceived by a person haptic.
  • the individual Braille writing points are formed by individual preferably circular pattern elements 350.
  • FIG. 4e Another embodiment of a raised pattern 360 in the form of a stylized signature is shown in FIG. 4e.
  • FIG. 5 schematically illustrates a method for producing cavities 310 between polymer particles 370 in a layer region 320 of a transfer film 300.
  • a suspension 380 of polymer particles 370 for example PC particles
  • a film carrier 600 for example of a polymer, in particular PC, infused.
  • all liquid portions 390 of the suspension are evaporated, so that the remaining polymer particles combine with one another and form a layer region 320 provided with cavities 310 between the polymer particles.
  • a metal strip is used as a film carrier instead of a PC, the layer region can be lifted off so that a transfer film having continuous cavities is formed.
  • the polymer particles may be partially dissolved in the suspension to enhance adherence of the polymer particles to each other upon evaporation of the liquid components.
  • the polymer particles may have reactive groups on the surface to cause subsequent crosslinking so that the layer region has a firm internal cohesion.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Printing Methods (AREA)

Abstract

L'invention concerne un produit imprimé (100) comportant un signe de sécurité (200) imprimé particulièrement infalsifiable pouvant être fabriqué avec des moyens simples et sans dispositifs complexes. Le produit imprimé présente un corps principal (400) de produit imprimé pourvu d'un premier et d'un deuxième côté principal (410), au moins un des deux côtés principaux (410) comporte au moins un élément de motif (350) disposé sous forme de motif (360), le au moins un élément de motif (350) contenant une substance de contraste K au moins dans respectivement une zone de couches (320) disposée à l'intérieur du au moins un élément de motif (350). Le au moins un élément de motif (350) est conçu de façon surélevée sur le côté principal respectif (410) de produit imprimé et relié fixement au corps principal (400) de produit imprimé.
EP14792428.6A 2013-10-21 2014-10-20 Produit imprimé pourvu d'au moins un signe imprimé, procédé de fabrication et film de transfert Active EP3060409B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20173260.9A EP3725537A1 (fr) 2013-10-21 2014-10-20 Produit d'impression pourvu d'au moins une marque d'impression luminescente, son procédé de fabrication et feuille de transfert

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310221324 DE102013221324A1 (de) 2013-10-21 2013-10-21 Mit mindestens einem Druckmerkmal versehenes Druckprodukt, Verfahren zu dessen Herstellung und Transferfolie
PCT/EP2014/072400 WO2015059074A1 (fr) 2013-10-21 2014-10-20 Produit imprimé pourvu d'au moins un signe imprimé, procédé de fabrication et film de transfert

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20173260.9A Division EP3725537A1 (fr) 2013-10-21 2014-10-20 Produit d'impression pourvu d'au moins une marque d'impression luminescente, son procédé de fabrication et feuille de transfert
EP20173260.9A Division-Into EP3725537A1 (fr) 2013-10-21 2014-10-20 Produit d'impression pourvu d'au moins une marque d'impression luminescente, son procédé de fabrication et feuille de transfert

Publications (2)

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EP3060409A1 true EP3060409A1 (fr) 2016-08-31
EP3060409B1 EP3060409B1 (fr) 2021-05-12

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EP14792428.6A Active EP3060409B1 (fr) 2013-10-21 2014-10-20 Produit imprimé pourvu d'au moins un signe imprimé, procédé de fabrication et film de transfert
EP20173260.9A Pending EP3725537A1 (fr) 2013-10-21 2014-10-20 Produit d'impression pourvu d'au moins une marque d'impression luminescente, son procédé de fabrication et feuille de transfert

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JPS60189488A (ja) * 1984-03-09 1985-09-26 Canon Inc 感熱転写材
DE3741179A1 (de) * 1987-12-04 1989-06-15 Gao Ges Automation Org Dokument mit faelschungssicherem oberflaechenrelief und verfahren zur herstellung desselben
US6004419A (en) * 1994-12-27 1999-12-21 Dai Nippon Printing Co., Ltd. Heat transfer printing process for producing raised images
JP3686555B2 (ja) 1999-07-23 2005-08-24 大日精化工業株式会社 プリント加工品の製造方法
FR2814476B1 (fr) 2000-09-11 2003-04-11 Arjo Wiggins Sa Feuille de securite comportant une couche transparente ou translucide
DE10047460A1 (de) 2000-09-21 2002-04-11 Orga Kartensysteme Gmbh Personalisiertes Sicherheitserzeugnis
DE10247591A1 (de) * 2002-10-11 2004-04-22 Giesecke & Devrient Gmbh Wertdokument
JP4334962B2 (ja) 2003-09-25 2009-09-30 大日本印刷株式会社 保護層転写シート、及び印画物
DE102005003413A1 (de) * 2005-01-25 2006-07-27 Hansgeorg Neubig Herstellung von Schriften und Zeichnungen mittels microverkapseltem 2-Komponenten Kunststoffschaum z.B. PU (Polyurethan) PS (Polystrol)
DE102005017169B4 (de) * 2005-04-13 2023-06-22 Ovd Kinegram Ag Transferfolie
WO2008011919A1 (fr) 2006-07-28 2008-01-31 Ilford Imaging Switzerland Gmbh Matériaux flexibles pour applications optiques
DE102007052947A1 (de) 2007-10-31 2009-05-07 Bayer Materialscience Ag Verfahren zur Herstellung eines Polycarbonat-Schichtverbundes
US20100194093A1 (en) * 2009-12-23 2010-08-05 Bank Of Canada Security devices, their production and use
DE102010035890A1 (de) 2010-08-30 2012-03-01 Bundesdruckerei Gmbh Verfahren zur Herstellung eines Sicherheitsdokuments mit einer mikroporösen laminierfähigen Druckfolie und Sicherheitsdokument

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EP3725537A1 (fr) 2020-10-21
WO2015059074A1 (fr) 2015-04-30
DE102013221324A1 (de) 2015-04-23
EP3060409B1 (fr) 2021-05-12

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