EP3060409B1 - 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 Download PDF

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Publication number
EP3060409B1
EP3060409B1 EP14792428.6A EP14792428A EP3060409B1 EP 3060409 B1 EP3060409 B1 EP 3060409B1 EP 14792428 A EP14792428 A EP 14792428A EP 3060409 B1 EP3060409 B1 EP 3060409B1
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EP
European Patent Office
Prior art keywords
printed
product
transfer film
film
main body
Prior art date
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Active
Application number
EP14792428.6A
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German (de)
English (en)
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EP3060409A1 (fr
Inventor
Franziska Peinze
Olga Kulikovska
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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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
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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 method for producing a printed product provided with the at least one print feature.
  • the present invention relates to a method for producing a valuable or security product provided with at least one printing feature.
  • Value or security products can be, for example, a personal document, a check card, a non-personalized authorization ID such as a ticket or a means of payment, or a value or security element intended for product security.
  • Valuable 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 surrender of a product or the provision of a service. To this end, it must be ensured that the product cannot be imitated, counterfeited or adulterated, or only with considerable effort.
  • the product therefore contains security features that are extremely difficult or even practically impossible to replicate. For example, like banknotes, the product is made of a material that is not readily available.
  • security features can be formed by special colors, for example luminescent or optically variable colors, optical elements such as holograms, tilt images, kinegrams, lens or prism arrays, as well as guilloches, mottled fibers, security threads and others. Furthermore, it is also necessary that the value or security documents can be easily produced.
  • printed security features come into consideration which are, for example, individualizing, such as a passport photo of the owner of the document or the like.
  • Such features can be generated, for example, with a thermal transfer process ( DE 100 47 460 A1 ).
  • EP 1 518 708 B1 describes a thermal protective layer transfer layer which is used for application to an image, for example.
  • This transfer layer is initially on a substrate film.
  • the transfer layer is formed by a layer sequence, namely a separating layer, a writable protective layer and a heat-sensitive resin adhesive layer.
  • the writable protective layer is porous.
  • the transfer layer is transferred from the substrate film to the image by means of a thermal transfer process. This achieves good resistance to moisture and solvents as well as good writability with an aqueous ink.
  • a safety sheet specified as a printable substrate which contains a transparent or translucent layer.
  • This layer is applied to a sheet of paper and is formed by a composition which can be prepared in an aqueous medium.
  • This composition contains colloidal silicon dioxide 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.
  • a method for producing a security document with a microporous laminatable printing film is specified.
  • 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 joined and laminated with other films to produce a document body.
  • the U.S. 6,004,419 A describes thermal transfer printing in which a thermally expandable ink layer is formed on a substrate sheet.
  • the U.S. 4,507,346 A describes a multi-layer identification card that carries information in the form of letter / number patterns or images, at least part of the information being in the form of a relief-like structure made of a foamed synthetic material.
  • the DE 102 47 591 A1 describes a value document, such as a bank note or the like, that has a security paper. At least one tactile marking in the form of a relief structure is produced in the security paper by means of a laser.
  • the U.S. 4,624,891 A describes a heat-sensitive transfer material which provides good letter quality on the recording material with poor surface flatness.
  • the heat transfer layer is composed of a micro-network porous resin structure of a thermoplastic resin and a heat-fusible ink gel contained in the micro-pores of the porous resin structure. In the event of heat transfer, the gel loses its gel-like property and changes into a liquid with a very low viscosity, so that the ink can penetrate the recording material. Forming raised structures is not described.
  • the present invention is therefore based on the object of forming a printing feature (printed security feature) of a value or security product which is particularly forgery-proof and which can preferably also be perceived haptically.
  • a security feature should be able to be implemented with simple means and without complex apparatus be.
  • the printed product can be a valuable product or a security product.
  • the value or security product can be a value or security document or a security element or transfer element, i.e. an element that is inextricably linked, for example, to an object to be protected against imitation, forgery or falsification, for example a sticker, label or the like.
  • 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, company ID, proof of eligibility, membership card, gift or shopping voucher, waybill or other proof of authorization, tax code, postage stamp, ticket, (game -)
  • a token adhesive label (e.g. for product security) or another ID document.
  • Such products are value or security documents.
  • a product manufactured according to the invention is also to be understood as a security element which has a printed security feature of the type manufactured according to the invention (printing feature) and which can be permanently connected to an object to be protected, for example a product or a value or security document, for example a sticker, Label or the like.
  • the value or security document can be in ID 1, ID 2, ID 3 or in any other format, for example in booklet form, as in the case of a passport-like object. It is generally formed by a laminate of several document layers, which are connected to one another in register with the action 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, for example, of a carrier material that is suitable for lamination.
  • the valuable or security product can be formed from a polymer selected from a group comprising polycarbonate (PC), in particular bisphenol A polycarbonate or a polycarbonate formed with a geminally disubstituted bis (hydroxyphenyl) cycloalkane, polyethylene terephthalate (PET ), their derivatives such as glycol-modified PET (PETG), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethyl methacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinyl phenol (PVP), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane (TPU), acrylonitrile-butadiene-styrene copolymer (ABS) and their derivatives, and / or paper (cellulose) and / or cardboard and / or a glass and
  • the product can also be made from several of these materials, in particular if it is made from several layers and the individual layers are made from different materials. It preferably consists of PC or PC / TPU / PC.
  • the polymers can 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 that are applied to a preliminary product, such as a protective or topcoat.
  • the product is preferably made from 3 to 12, preferably 4 to 10, films.
  • the foils can carry further printing layers arranged externally on the valuable or security product or arranged internally therein.
  • a laminate formed in this way can then be coated on one or both sides with the protective or topcoat or with a film.
  • the film can in particular be a volume hologram, a film with a surface hologram (for example a kinegraphic element) or a scratch protection film.
  • Overlay layers formed in this way protect a security feature arranged underneath and / or give the document the required abrasion resistance.
  • pattern a somehow designed distribution of elements that convey an optical impression for the human eye and / or an impression that a person can perceive tactilely is preferred to be understood in a two-dimensional arrangement on one or more surfaces that result in 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 can, for example, contain information and therefore form an identification.
  • the visual impression can be perceived by contrasting surface areas, with a contrast between individual pattern elements being produced by different shades of color, brightness or different surface properties (gloss, roughness or the like).
  • pattern element is mentioned in the description and in the claims of the present application, it is to be understood as a component / element of a pattern.
  • the printed product produced according to the invention has a printed product main body with a first and a second main side. At least one pattern element arranged in the form of a pattern is located on at least one of the two main sides. The pattern forms a printing feature in accordance with the present invention.
  • the at least one pattern element contains a contrast substance in at least one layer area arranged on the inside in the at least one pattern element. This contrast substance is visually perceptible.
  • the layer area is designed in particular in the form of a layer and extends over a part of the main body of the printed product, i.e. in particular forms a layer of the main body.
  • the at least one pattern element is raised on the respective main side. It is inextricably linked to the main body of the printed product. However, the contrast substance need not be restricted to the layer area.
  • the transfer film has the open cavities on the loading side of the transfer film.
  • the cavities are loaded with the contrast substance.
  • the printed product can in particular be a valuable or security product.
  • the main body of the printed product is a preliminary product of the valuable or security product, i.e. an object that can be converted into the valuable or security product (the printed product) by carrying out process steps (a), (b) and (c).
  • the inventive method and the transfer film allow, for example, a simple production of an individualizing value or security product because the transfer film can be individually transferred to the main body of the printed product using simple means and forms the printing feature there.
  • This print feature is visually perceptible due to its loading with the contrast substance, in particular a color substance, and, moreover, because the print feature is formed on the main body of the printed product by a pattern of raised pattern elements, can be perceived (palpably) by touch, but only if the thickness of the pattern elements on the printed product main body is sufficiently large (at least about 30 ⁇ m, more preferably at least about 100 ⁇ m thick, and preferably at most 500 ⁇ m).
  • the loading of the transfer film with the contrast substance can be implemented very easily with conventional material application processes, for example with an immersion process.
  • the individual pattern elements to be formed on the respective main side of the main body of the printed product can then be produced using a conventional thermal transfer process. Since the contrast substance is not located on the outside of the pattern elements, but in their inner volume, is with the invention The method further ensures that the individualizing visual impression produced by the contrast substance is produced by the contrast substance contained on the inside in the raised pattern elements. It has also been found that despite the loading of the cavities with the contrast substance, it is ensured that the raised pattern elements adhere firmly to the main sides of the main body of the printed product. This is because the contrast substance in the pattern elements does not form a layer at the interfaces between these and the main body of the printed product that 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 part of the inner volume of the pattern elements. A contrast substance can therefore also be selected which would otherwise facilitate detachment of the pattern elements from the main body.
  • the cavities in the transfer film absorb the contrast substance. Penetration is mediated by capillary forces.
  • the contrast substance penetrates the transfer film and is held there firmly. 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 / wiping off excess contrast substance.
  • the contrast substance can be a color substance or another visually perceptible substance, for example a metal.
  • a coloring substance is a paint containing one or more pigments, or an ink containing one or more dyes.
  • the color substance can have a spectrally colored, black or gray hue.
  • a metal can be deposited in the cavities from a solution containing ions of this metal and a reducing agent for these ions, so that a shiny metallic effect results.
  • a Fehling's solution titanium copper (II) complex in water
  • II tartrate copper
  • ammonia an aqueous solution containing sugar or an aldehyde to deposit silver become.
  • the transfer film is then heated to generate the metal in the cavities.
  • a conventional coating process can be used to load the cavities of the transfer film with the contrast substance, for example a printing process such as an offset or screen printing process, a doctor blade process, a roller coating process, a dipping process, a curtain casting process, a spin coating process or the like.
  • a printing process such as an offset or screen printing process, a doctor blade process, a roller coating process, a dipping process, a curtain casting process, a spin coating process or the like.
  • the partial surface areas of the transfer film to form the pattern elements are transferred to these transfer film areas on the main body of the printed product by mechanical action (pressing the transfer film onto the main side of the printed product) and thermal action (supplying heat to the transfer film), wherein the layer area in which the cavities with the contrast substance contained therein are located comes into contact with the main side of the main body of the printed product.
  • the partial surface areas are then permanently connected to the main body.
  • the transfer film is pressed locally against the surface of the main body of the printed product in the partial surface areas corresponding to the pattern elements to be formed and also heated. This leads in particular to the permanent connection when the material of the transfer film is formed by a thermoplastic material so that it at least partially melts when heated.
  • the transfer film can also be chemically functionalized on the contact side, so that it connects to the main body by supplying thermal energy.
  • thermal action which is used to permanently connect the partial surface area of the transfer film to the main side of the printed product
  • action by means of electromagnetic radiation, for example UV radiation can also be selected. This can cause a chemical reaction at the interface between the partial surface area of the transfer film and the main side of the printed product take place, which leads to the permanent connection.
  • a tool is used for the heating, with which the transfer film is pressed against the main side of the main body of the printed product in certain areas.
  • 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.
  • Heat is supplied to the tool, which it then passes on locally to the transfer film, or the tool is designed to generate the heat itself, for example via resistance heating or an ultrasonic vibration device.
  • a separate tool can also be used for the heating, for example an electromagnetic radiation source, for example a laser device, the radiation of which is absorbed in the transfer film so that it is heated.
  • the transfer film can contain special absorbers, in particular substances that are selectively absorbent in the infrared spectral range (thermosensitive substances). These are preferably located in an area in the transfer film which is arranged adjacent to its loading side.
  • the transfer film in the partial surface area can first be brought into contact with the main side of the main body and the partial surface area brought into contact can then be heated.
  • the partial surface area is optionally additionally pressed onto the main side of the main body.
  • the part of the transfer film that has not been connected to the main body ie does not correspond to the partial surface areas, can be mechanically separated from the connected partial surface 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 remainder of the film takes place, for example, by means of a punching process, which is carried out by means of the tool for pressing on and supplying the thermal energy. If the heating takes place by means of electromagnetic radiation or electromagnetic radiation is used to trigger a chemical reaction, this can be passed through suitable pressure elements.
  • the pressing elements must be transparent / translucent for the electromagnetic radiation. It can also be provided that parts of the transfer film that are not connected to the main body are mechanically and / or chemically removed, for example in a brushing and / or washing process, if these are not related to the remaining film.
  • the spatial distribution of the contrast substance in the inner layer area given by the cavities can be canceled out, for example by melting the material of the partial surface area of the transfer film, so that the contrast substance is evenly distributed in the layer area.
  • the spatial distribution given by the cavities is retained or partially retained.
  • the material of the main body of the printed product can be any of the materials mentioned above for these products, in particular in the case of the production of a valuable or security product.
  • other materials and materials can also be considered, for example composite materials, in particular fiber composite materials, made from the materials mentioned and also filled materials, the composite materials and filled materials being made up of a base material made from one of the materials mentioned and fillers or fibers made from polymer, for example, Paper (cellulose), ceramic, glass, metal or the like are formed.
  • the fillers can be formed by fibers, grains or other particles.
  • the main body of the printed product is formed from or can contain a polymer material selected from PET and PC, wherein the polymer can additionally contain fillers, for example for coloring.
  • the main body of the printed product can be a preliminary product for a valuable or security product, in particular for a valuable or security document.
  • the main body of the printed product can therefore be formed in the form of a preferably monolithic laminate composed of several layers.
  • the individual layers can each be opaque or transparent or translucent.
  • the pre-product can already have other security features and / or an internal electrical circuit, for example an RFID circuit with an RFID chip and an antenna, and / or electronic display elements on the outside.
  • the main body of the printed product can be in the format intended for end use or in a multiple use, from which the printed product equipped with the printing feature is formed in the intended format by separation, for example cutting or punching, after the method according to the invention has been carried out.
  • the main body of the printed product can also have the thickness required for this: it can preferably be at least 500 ⁇ m and especially preferably at least 700 ⁇ m.
  • the thickness is preferably a maximum of 2 mm and particularly preferably a maximum of 1 mm.
  • the thickness can be adapted to the respective requirements. For example, in these cases the thickness can preferably be at least 50 ⁇ m, more preferably at least 200 ⁇ m and most preferably at least 700 ⁇ m. It can preferably be a maximum of 5 mm, more preferably a maximum of 2 mm and most preferably a maximum of 1 mm.
  • the material of the transfer film can also be any of the materials mentioned above for valuable or security products, especially in the case of the production of a valuable or security product. In principle, however, other materials can also be used for the transfer film, it being possible in principle to use the materials and materials mentioned for the main body of the printed product.
  • the transfer film is transparent or translucent (translucent) so that the contrast substance is visible through the transfer film. Therefore, the material from which the transfer film is made is transparent or translucent.
  • the transfer film can, however, contain dyes or fillers, provided that the transparency or translucency of the transfer film is at least not significantly impaired.
  • the transfer film is formed from or can contain a polymer material which is selected from PET and PC.
  • the thickness of the transfer film can 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 a maximum of 250 ⁇ m, more preferably a maximum of 100 ⁇ m, more preferably a maximum of 75 ⁇ m, even more preferably a maximum of 50 ⁇ m and most preferably a maximum of 25 ⁇ m thick. It can be 10 ⁇ m thick, for example.
  • the cavities in the transfer film can be created during its production or only introduced into it after its production.
  • the film can be provided with an expandable material during extrusion, for example, which outgasses at an elevated temperature and creates the cavities.
  • inorganic or organic materials that have a porosity can also be incorporated into the polymer material of the transfer film, for example silicon dioxide or aluminum oxide, which can be present in the form of nanoscale particles.
  • larger particles with correspondingly small cavities can also be used, for example zeolites.
  • filled materials are exemplified in WO 2008/011919 A1 specified as a coating material containing inorganic nanoparticles.
  • DE 10 2010 035 890 A1 also shows a method for making a microporous film.
  • a particulate material is extruded into a film.
  • the particles have defined cavities. They can be zeolites or fullerenes, for example.
  • a suspension of polymer particles for example PC particles, is applied to a film carrier. The liquid components of the suspension are then evaporated, so that the remaining PC particles combine with one another and form a porous film.
  • the film carrier can also consist of PC or at least contain this.
  • the PC particles can also be crosslinked by suitable crosslinkers present.
  • a foamed resin emulsion composition can be used. Such a manufacturing method with an acrylic ester resin is in DE 600 36 341 T2 described. If polymers other than acrylic ester resins are also used for such a process, for example PC or PET, appropriate adaptations to be made by a person skilled in the art are necessary. These materials can be made using the resin emulsion as well as foaming agents,
  • Foam stabilizers and thickeners are produced.
  • the cavities are only formed in the transfer film after it has been manufactured, they can be created by perforation processes, for example by laser drilling (laser ablation, either thermally with a CO 2 laser or by photolytic decomposition of the polymer material with a UV (excimer) laser .
  • the cavities can be formed by holes, depressions, cavities, channels, pores, recesses, cavities and the like.
  • the film material can be porous.
  • the cavities can penetrate the transfer film completely or only partially.
  • the cavities are preferably characterized in that they are elongated and have 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 a size in the micrometer range, i.e.
  • 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 ⁇ m.
  • the cavities can also be smaller: their size can, for example, be at least 50 nm and more preferably at least 100 nm and a maximum of 1000 ⁇ m, better a maximum of 500 ⁇ m and best of all a maximum of 100 ⁇ m.
  • 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 is as large as possible is.
  • 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 side.
  • the openings of the cavities are preferably distributed as uniformly as possible on the loading side.
  • the cavities are located exclusively in a layer area adjacent to the loading side in the transfer film, this layer area not taking up the entire volume of the transfer film but only a part of it.
  • the cavities are open to the surface on the loading side so that the contrast substance can be introduced into them.
  • the layer area can preferably occupy half the thickness of the transfer film or a lesser or greater proportion, for example in a range from 5% to 40% or 60% to 90% of the thickness.
  • the contrast substance in the print feature appears to be internal, even when examined not only with the naked eye but also by means of a microscope.
  • the contrast substance can be formed by any color substance suitable for a printing process, for example a printing ink that contains the color-forming agents in the form of inorganic and / or organic pigments, or a printing ink that contains the color-forming agents in the form of inorganic and / or organic dyes .
  • the color substance can also be formed by a luminescent agent.
  • the pigments or dyes can also be luminescent. Examples of printing inks and printing inks are in DE 10 2007 052 947 A1 specified.
  • the luminescent means can also be formed by inorganic and / or organic pigments and / or luminescent substances.
  • the color substance contains further customary constituents which a printing ink or a printing ink also has, for example binders, solvents and other customary constituents.
  • the binder is a PC derivative.
  • PC derivatives are also in DE 10 2007 052 947 A1 specified.
  • the solvent can be aqueous or organic. In particular, it can be a mixture. The mixture can be purely organic or additionally contain water. Such solvents are also in DE 10 2007 052 947 A1 specified.
  • the transfer film has regularly arranged thin areas (reduced thickness of the transfer film compared to the rest of the film), so that the partial surface areas to be applied are easily mechanically separated from the rest of the transfer film along thin areas that border the partial surface areas can be.
  • the partial surface areas can be separated very easily and precisely from the film remainder that is not to be applied, because the thin areas represent intended separation points.
  • the grid of the thin areas and the raised areas preferably extends over the entire surface of the transfer film. This results in a controlled shaping of the pattern elements. If 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 areas preferably do not extend completely through the transfer film. They are rasterized two-dimensionally, that is to say formed in a preferably regular two-dimensional arrangement. Accordingly, the raised areas in between are also arranged regularly.
  • the thin areas can be formed, for example, by continuous trenches or also by recesses or perforations that are spaced apart from one another.
  • the trenches can also have perforations.
  • the thin regions can either be formed exclusively by trenches which, for example, have a uniform depth, or, in addition to trenches with a uniform depth, can also have perforations which completely penetrate the material of the film. Alternatively, only perforations or trenches with varying depths or other types of thin areas can also be present.
  • the cavities, recesses, incisions, recesses, openings, hollows and the like that form the thin regions are preferably in a regular one-dimensional or two-dimensional arrangement.
  • the thin areas can be designed in the form of a square, rectangular, parallelogram-like grid formed by hexagons or also by curved groups of boundary lines which cross each other at any given angle.
  • the grid of the thin areas forms raster cells (raster cells between the thin areas form pixels in a raised shape, so that a pixelated transfer film formed by the thin areas in a raster form is formed).
  • the pixels can be “punctiform” or in the form of stripes or in yet another form raised in relation to the thin areas.
  • the minimum dimensions of the grid cells are determined by the desired fineness of the film element.
  • the grid has grid cells with lateral dimensions of 50 ⁇ m to 500 ⁇ m, preferably 70 ⁇ m to 200 ⁇ m.
  • the depth of the depressions or the like is determined by the total thickness of the film.
  • the remaining thickness should be so small that the film preferably only tears slightly in the thin areas.
  • the remaining thickness can be 5 ⁇ m to 200 ⁇ m, more preferably 30 ⁇ m to 100 ⁇ m.
  • the thin areas can be formed by material removal or material reshaping, for example with an etching process or an embossing process, after the production of the transfer film.
  • the thin areas can also be produced during the production of the transfer film, for example by means of a targeted material build-up.
  • the printing features to be formed on the main body of the printed product can be screened or not screened. Any raised printing features can be created on the main body. It is therefore possible not only to produce the raised print features in a single design, for example for a larger set of value or security documents, which is common to all of these documents, but also to form an individual design of the print feature for each individual document.
  • the raised print features can also be designed in the form of individualizing, in particular personalizing, identifications, ie in the form of identifications which, for example, reproduce individualizing data of a person or thing to which the value or security document is assigned, either in plain text or in encrypted form . For example, the name or another identifier of the person can be presented in a raised manner in this way.
  • the raised printing feature can encode information.
  • the raised identification can be reproduced with alphanumeric characters or, more preferably, in Braille, in particular in Braille.
  • the raised printing feature can thus represent an authentication feature.
  • the raised printing feature can also be a verification or authenticity feature.
  • FIG. 11 is a cross-sectional view along section II in FIG Fig. 1a shown, which represents the individual polymer layers and external protective lacquer layers 150, which are intended to protect against abrasion.
  • An electronic RFID circuit with a chip 161 and an antenna 162 is located on an inner layer 160.
  • the individual layers are shown separately, but can no longer be distinguished from one another in the laminated state because they are fused together during lamination (monolithic structure).
  • the polymer layers can for example consist of 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 the information underneath is visible from the outside. If the pattern elements on the card according to the present invention are to be perceptible to the touch, they must be significantly thicker than the protective lacquer layer that covers them.
  • the card 100 has a top side 101 and a bottom side 102.
  • the data in the first and second data fields are produced by printing layers which are arranged on an outer inner layer 140 of the document, but directly below the outer protective lacquer layer 150.
  • the card 100 furthermore contains an additional field 170 in which a copy of the facial image of the holder of the card is arranged.
  • This facial image is in the form of a printed feature 200 according to the present invention and is formed by a pattern of a plurality of raised pattern elements which are produced by the method according to the invention.
  • the method according to the invention for producing the printed product provided with the at least one print feature 200, namely the card 100, is step-by-step in Fig. 2 shown schematically:
  • a first process step Fig. 2a
  • a transfer film 300 having cavities 310 and a printed product main body 400 Figure 2c
  • This step corresponds to process step (a) of the process according to the invention.
  • the main body can, for example, be an almost completed identity card, which already has all the other security features including the externally visible print features, such as the face image 110 of the holder of the card and the data of the holder of the card in the data fields 120, 130, however not yet the printing feature according to the present invention and optionally 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, i.e. in a further step of the method according to the invention it is applied in regions to a main side 410 of the main body 400 and is permanently connected to the main body.
  • the transfer film can be formed from PC or PET, for example, and have a thickness of, for example, 10 ⁇ m. However, it can also be thicker, in particular if it is intended to form a tactile security feature, in this case for example at least 30 ⁇ m and for example at most 500 ⁇ m.
  • the transfer film is preferably transparent, but can also be translucent.
  • the transfer film can be colored, but this coloring is not intended to impair the visual perception of the contrast substance to be introduced into the cavities 310.
  • the transfer film has an upper side 301 and a lower side 302.
  • the transfer film 300 has cavities 310 on its underside which, for example, as in FIG Fig. 2a shown are formed starting from the bottom 302 in the form of elongated channels and extend into the interior of the film. Since these channels in a further process step (see Figure 2b ) are loaded with a contrast substance, the underside to which the channels are open is designed as the loading side of the transfer film. The channels do not extend completely through the transfer film but end inside the transfer film. The area in which the cavities are located forms the layer area 320 in the transfer film. This layer area is located in the lower area of the transfer film adjacent to its loading side. The layer area thus extends exclusively to a layered partial area of the transfer film.
  • the channels can be produced, for example, with a method in which the layer area formed by the channels is applied to a carrier 600, the channels being formed during this application process (see FIG Fig. 5 ). The totality of layer area and carrier then finally forms the transfer film.
  • the channels 310 are loaded with a contrast substance K ( Figure 2b ).
  • This process step corresponds to process step (b) of the process according to the invention.
  • the contrast substance K can, for example, be a color substance, for example an ink.
  • an ink is exemplified in DE 10 2007 052 947 A1 specified. 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 with this ink, for example using a roller coating process.
  • the transfer film has first been conditioned in an atmosphere which is formed by a vapor of the solvent mixture of the ink in order to saturate the channels with the solvent mixture. This ensures that the ink easily penetrates the channels. Due to the chemical affinity of the PC ink for the PC film, the ink easily penetrates the channels through the capillary forces.
  • the transfer film 300 loaded in this way is then brought into contact with the printed product main body 400, namely the preproduct of the identity card ( Figure 2c ).
  • Individual partial surface areas 330 of the transfer film 300 loaded with the contrast substance K are then permanently connected to the preliminary product 400 of the card 100 by means of a tool 500 suitable for this purpose.
  • the sub-area is drawn as a broken line and separated from the rest of the transfer film.
  • the film remainder 300 'which is not connected to the preliminary product 400 is then lifted off ( Fig. 2e ).
  • This sequence corresponds to method step (c) of the method according to the invention.
  • the material of the partial surface areas is melted so that the contrast substance is evenly distributed in the inner layer area 320 ( Fig. 2e ).
  • the loaded transfer film 300 is placed on a main side 410 of the preliminary product 400 in such a way that the layer region 320 in which the channels 310 are located comes into contact with this main side.
  • a thermal printing tool 500 is placed on a partial surface area 330 of the transfer film 300 from above, which corresponds to a pattern element 350 to be formed ( Fig. 2e ).
  • This tool can, for example, be a heated needle that punches out a small subarea of the transfer film pixel by pixel.
  • this punching tool is pressed onto the upper side 301 of the transfer film.
  • the heated tool transfers thermal energy to the transfer film.
  • the resulting increase in temperature leads to the transfer film partially melting in the pressed area, so that it bonds firmly to the surface 410 of the preliminary product 400 of the card 100.
  • This process step can be carried out in a conventional thermal printing device.
  • a pattern element 350 therefore remains on the surface 410 of the preliminary product 400 of the card 100, which is inextricably linked to the card surface.
  • the Layer region 320 loaded with the ink K. Due to the partial melting of the transfer film material, the channels 310 are no longer present. For this purpose, the ink has distributed itself in the layer region 320. Since this is located on the side of the element adjacent to the card surface and is still covered by an unloaded area, the ink is arranged on the inside of the pattern element. This can also be checked with a microscope.
  • Fig. 3 a cross-section of several sub-elements of the raised printing feature 200 produced by the method according to the invention on the card 100 is shown.
  • the individual sub-elements form pattern elements 350 of the pattern forming the print feature.
  • the pattern elements are raised above the card surface 410 and are inextricably linked to it. They have a layer region 320 of the contrast substance, here the ink K, arranged at the bottom and thus on the inside.
  • these pattern elements can be visually perceived separately 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 are diverse with the in Fig. 2
  • the illustrated method shows raised patterns 360 from a multiplicity of possible pattern elements 350.
  • each character being formed by a single pattern element 350 or by a group of several pattern elements arranged next to one another without gaps.
  • the tool 500 used to form the respective pattern element must be designed 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 can be formed by a single pattern element 350 or by a plurality of pattern elements arranged next to one another without gaps. In this respect, the same applies as for the embodiment of FIG Figure 4a .
  • the transfer film 300 used for this must be at least 30 ⁇ m thick. It is preferably about 100 ⁇ m thick so that the writing can be easily perceived by a person.
  • the individual Braille writing points are formed by individual, preferably circular, pattern elements 350.
  • a method for creating cavities 310 between polymer particles 370 in a layer area 320 of a transfer film 300 is shown schematically:
  • a suspension 380 of polymer particles 370 for example PC particles
  • a film carrier 600 for example made of a polymer, in particular made of PC.
  • all of the liquid fractions 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 the film carrier instead of PC, the layer area can be lifted off so that a continuous transfer film with cavities is formed.
  • the polymer particles can be partially dissolved in the suspension in order to improve the adhesion of the polymer particles to one another when the liquid constituents evaporate.
  • the polymer particles can have reactive groups on the surface in order to bring about a subsequent crosslinking, so that the layer area 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)

Claims (6)

  1. Procédé pour fabriquer un produit imprimé (100) pourvu d'au moins un signe imprimé (200), comprenant les étapes de procédé suivantes :
    a. la fourniture d'un film (300) présentant des cavités (310) et la fourniture d'un corps principal de produit imprimé (400) avec un premier et un deuxième côté principal de produit imprimé (410) et
    b. le chargement des cavités (310) du film (300) à partir de la surface du film (300) formant le côté de chargement (302) avec une substance de contraste (K), de sorte que la substance de contraste (K) se trouve dans une zone de couche (320) sur le côté de chargement (302) dans le film (300),
    caractérisé en ce que le film (300) est un film de transfert et que le procédé présente l'autre étape de procédé suivante :
    c. le transfert d'au moins une zone de surface partielle (330) du film de transfert (300) par action mécanique sur la au moins une zone de surface partielle sur le corps principal de produit imprimé (400), dans lequel la au moins une zone de surface partielle (330) du film de transfert (300) est reliée de manière non détachable avec la surface de celui-ci sur le côté de chargement (302) au corps principal de produit imprimé (400) et dans lequel un motif (360) avec au moins un élément de motif (350) surélevé est réalisé sur le côté principal de produit imprimé (410) respectif, dans lequel, pour relier de manière non détachable la zone de surface partielle (330) au côté principal de produit imprimé (410), une action thermique ou une action avec rayonnement électromagnétique a lieu en plus.
  2. Procédé pour fabriquer un produit imprimé (100) pourvu d'au moins un signe imprimé (200) selon la revendication 1, caractérisé en ce que la substance de contraste (K), lors de la liaison de la au moins une zone de surface partielle (330) du film (300) au corps principal de produit imprimé (400), se répartit uniformément dans la zone de couche (320).
  3. Procédé pour fabriquer un produit imprimé (100) pourvu d'au moins un signe imprimé (200) selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le produit imprimé (100) est un produit de valeur ou de sécurité.
  4. Procédé pour fabriquer un produit imprimé (100) pourvu d'au moins un signe imprimé (200) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les cavités (310) se trouvent exclusivement dans la zone de couche (320) sur le côté de chargement (302) dans le film de transfert (300).
  5. Procédé pour fabriquer un produit imprimé (100) pourvu d'au moins un signe imprimé (200) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le corps principal de produit imprimé (400) et le film de transfert (300) sont formés d'un matériau polymère, qui est choisi parmi le polyéthylène téréphtalate et le polycarbonate.
  6. Procédé pour fabriquer un produit imprimé (100) pourvu d'au moins un signe imprimé (200) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la substance de contraste (K) est une substance colorée et que la substance colorée contient un dérivé de polycarbonate en tant que liant.
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)

Publication Number Publication Date
EP3060409A1 EP3060409A1 (fr) 2016-08-31
EP3060409B1 true 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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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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EP (2) EP3060409B1 (fr)
DE (1) DE102013221324A1 (fr)
WO (1) WO2015059074A1 (fr)

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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
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WO2015059074A1 (fr) 2015-04-30
DE102013221324A1 (de) 2015-04-23
EP3060409A1 (fr) 2016-08-31
EP3725537A1 (fr) 2020-10-21

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