WO1999039221A2 - Procede et dispositifs pour la realisation d'images changeantes a moirage - Google Patents

Procede et dispositifs pour la realisation d'images changeantes a moirage Download PDF

Info

Publication number
WO1999039221A2
WO1999039221A2 PCT/DE1999/000297 DE9900297W WO9939221A2 WO 1999039221 A2 WO1999039221 A2 WO 1999039221A2 DE 9900297 W DE9900297 W DE 9900297W WO 9939221 A2 WO9939221 A2 WO 9939221A2
Authority
WO
WIPO (PCT)
Prior art keywords
transparent
substrate
graphic patterns
liquid substance
nozzles
Prior art date
Application number
PCT/DE1999/000297
Other languages
German (de)
English (en)
Inventor
Ralf Paugstadt
Original Assignee
Ralf Paugstadt
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 Ralf Paugstadt filed Critical Ralf Paugstadt
Priority to AU33253/99A priority Critical patent/AU3325399A/en
Publication of WO1999039221A2 publication Critical patent/WO1999039221A2/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • 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
    • 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
    • B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/10—Changing, amusing, or secret pictures

Definitions

  • Lenticular raster alternating images * represent different images when viewed from different directions, for example phases of a movement sequence.
  • a change in the viewing direction can be done by tilting a lens raster alternating image or by passing are created on a fixed lenticular alternating image If a lenticular alternating image is constructed in such a way that the respective stereoscopic view of a spatial scene is visible in the direction of the right and left eye, lenticular alternating images create the illusion of a spatial depth of this scene.
  • Lenticular grid change images are used as postcards, advertising media, as displays and for the visualization of three-dimensional scenes. Due to the difficult manufacturing technology compared to static images and the high attention value, lenticular grid change images are also used as security features on ID cards, tickets or for product security.
  • FIG. 1 illustrates the principle of lens raster alternating images on the basis of the cross section of a transparent substrate 2 whose top 46 has two cylindrical lens-shaped strips 37a, b and on whose underside 47 graphic patterns 34 af are applied.
  • the patterns 34 af in color 1 (34 a and 34 d), color 2 (34 b and 34 e) and color 3 (34 c and 34 f) are printed on the rear side 47 of a transparent substrate 2 with a front face 46 embossed in a cylindrical shape
  • the distance 48 corresponds approximately to the focal length of the lenticular surfaces 37
  • light incident from the direction 50 is focused by the cylindrical lens-shaped strips 37 onto the patterns 34 b and 34 e.
  • An observer looking from the direction 50 and from a greater distance therefore accepts the strips 37 of color 2 true
  • a planar structure can be realized which represents three different images from three observation directions, each of which is composed of the strips located under the center points of the lenses or the strips to the right or left thereof
  • the three images to be displayed must therefore correspond to the number of lens strips
  • a lenticular grid alternating image made up of lens strips changes the displayed image only when the viewing direction changes from 49 to 51, ie in the plane perpendicular to the substrate 2 and perpendicular to the lens strips 37.
  • a change in the viewing direction in the plane perpendicular to the substrate 2 and parallel to the lens strip 37 does not change the image view, because no curved, refractive surfaces are effective in this plane
  • FIG. 2 shows an arrangement of such lenses 24 on a transparent substrate 2.
  • Colored circles or circular rings 25 are applied centered under the lenses 24 on the back of the substrate 2
  • the observer looking at the top of the substrate 2 sees a pattern according to FIG. 3, while depending on the deviation ⁇ of the viewing direction from the vertical, the colors of the first or the second circular rings become visible.
  • the circular rings are divided into sectors of different colors, the visible image also became clear with a variation of the viewing direction ⁇ change
  • the images visible from different viewing angles result from the laws of geometric optics.
  • the image contents depend on the content of the graphic patterns, on the structure of the lens grid, on the refractive index and the thickness of the lens grid material and on the positions of the graphic patterns relative to the refractive surfaces
  • FIG. 15 shows an example of an arrangement of graphic points 45 and a cylindrical lens-shaped strip 44, in which the points are shifted towards the edge of the strip
  • the relative positions 52 between the graphic pattern and the refractive surfaces, which are predetermined by the intended effect of the lens raster alternating image, are referred to as “defined” relative positions.
  • defined For viewing angles 48 different from the focal length of the raster, there are image angle-dependent image changes
  • FIG. 1 it can be seen that the accuracies 52 of the alignment of the patterns 34 a-c relative to the lenticular strip 37 a, b of the substrate 2 above them are high
  • the thickness 48 of an alternating lenticular image should generally not exceed a few 100 ⁇ m, the patterns 34 a-c must be positioned relative to the substrate 2 with an accuracy of less than 100 ⁇ m
  • the gripping device of the printing machine must grip a substrate sheet 2 and be accurate to less than 10 ⁇ m in relation to the printing plate or
  • Two processes are known for the printing-technical production of interchangeable lenticular images.
  • transparent foils 2 provided with lenticular grids on the upper side 46, are printed on the rear side 47.
  • the lenticular grid base material is produced in a separate production step Setting up the printing machine or in the event of misalignment of the substrate feed to the printing plate or printing roller. Reject prints. These non-exactly printed lens grids have become unusable. Disadvantages of the method are therefore that the starting material is an expensive one Lenticular base material must be used and that parts of this material are lost as rejects in the furnishing and production process.
  • the front side 46 of a transparent thermoplastic substrate 2 is embossed in a lenticular pattern in a second known method simultaneously with the printing on the rear side 47. Since the position of the embossing and printing rollers can be kept constant better relative to one another than the positioning of a prefabricated lenticular film relative to the printing plates or rollers, the accuracy of the positioning of the printing patterns 34 relative to the lenticular strips 37 can be ensured more precisely. Disadvantages of this method are, however, that expensive special embossing and printing machines are required, and that two different processes with different requirements for parameters such as speed, contact pressure, temperature, etc. must be coordinated.
  • Methods are also known for exposing the graphic information 34 to the rear side 47 of a substrate 2 provided with a light-sensitive coating.
  • Disadvantages of exposed lenticular alternating images are the additional price of a light-sensitive layer, the need for development and fixing processes, and the high demands on the positioning accuracy of the substrates 2 relative to the
  • lenticular alternating images Due to the high demands on the positioning accuracy of the graphic information relative to the lenticular base material, lenticular alternating images are only produced by a few companies worldwide and have so far not been economically viable with variable content, i.e. with content that is specific to each lenticular alternating image (names, passport images, etc.).
  • the invention has for its object to provide a simple method and devices for the production of lenticular alternating images, with which both the refractive lenticular surfaces and the graphic pattern can be produced in one production step so that both are in a precisely defined position relative to each other.
  • the process does not require lenticular films, but uses flat substrates as the starting material. It is therefore suitable to be integrated into conventional printing processes and enables the easy application of lens grid interchangeable images on flat, flexible or rigid media
  • Another object of the invention is to enable the inexpensive production of variable lens grid change images, that is, of lens grid change images with varying contents such as numbers, names or personal information, or the production of lens grid change images in individual copies or small runs
  • the object is achieved in that a graphic pattern is applied to a surface of a planar transparent substrate and on the other side in a defined position with respect to the graphic pattern a transparent, liquid substance is applied which, after it has solidified, has the lenticular, light-refracting surfaces which are in exact relative positions to the print pattern
  • the device for carrying out the method consists of two inkjet print heads arranged on the opposite sides of a flat, transparent substrate and rigidly connected to one another, one of which applies the transparent, liquid substance which forms the light-refracting surfaces after solidification, while the other hangs up the graphic pattern.
  • the rigid connection of the two inkjet print heads ensures that the light-refractive surfaces are positioned exactly relative to the print pattern
  • An inkjet printhead can print variable graphic patterns. Therefore, with the method according to the invention, variable lenticular image changes can be produced
  • the application of lens raster alternating images can be integrated into conventional printing processes.
  • a sheet printed in any printing method can additionally receive a logo in the form of a lens raster alternating image
  • the lenticular grid can be produced as an array of dome-shaped or sphanic lenses or as an array of cylindrical lens-shaped strips and, in combination with concentric or strip-shaped graphic patterns, can produce a multitude of optical effects when viewed from different viewing directions corresponding to the explanations for FIG. 1 in the introduction and thus generate a lenticular alternating image that appears in different colors from different viewing directions.
  • Such an effect can be used as a security feature on tickets or other value documents that can be verified without aids
  • lenticular alternating images can be applied to any surface by applying the graphic pattern and the transparent, liquid material that forms the lenticule after solidification directly on top of an object
  • the graphic patterns can also be realized by a thermal printhead arranged in an exact position relative to the lens raster inkjet printhead or by an exposure head
  • Figure 1 Structure and operating principle of a lenticular interchangeable image based on cylindrical lens-shaped strips
  • Figure 2 Structure and principle of operation of a lenticular interchangeable image based on dome-shaped lenses
  • FIG. 3 When the lenticular grid interchangeable image according to FIG. 2 is viewed vertically, FIG. 4 shows the production of interchangeable lenticular images
  • FIG. 6 Lenticular alternating image
  • Figure 7 basic shapes for the graphic patterns and the refractive surfaces
  • Figure 8 Further basic shapes for the graphic patterns and the refractive surfaces
  • FIG. 10 combination of several cylindrical lens-shaped, heart-breaking surfaces with stripe-shaped graphic patterns
  • F Fiigguurr 1111 combination of radial-symmetrical, graphic patterns and a dome-shaped, light-refracting surface
  • Figure 12 Device for the production of lens grid alternating images with inkjet nozzles
  • FIG. 13 Device for producing lens raster alternating images with rigidly connected inkjet arrays
  • FIG. 15 Device for applying lens raster alternating images to conventionally printed products
  • FIG. 4 shows the first process step for the production of lens grid alternating images, the application of graphic patterns 3 on side 1 of a substrate 2. Circular points 3 are shown as an example of the graphic patterns
  • FIG. 5 shows the second method step, the application of a transparent, liquid substance 5 in a defined position relative to the graphic patterns 3 on the side 4 of the substrate 2.
  • this relative position was defined by the desired alternating image effect the position over the center points of the circular points 3 is selected
  • FIG. 6 shows the result of the process after the transparent, liquid substance 5 has solidified. Due to the surface tension, the transparent, liquid substance 5 has deformed into domes 6, which center over the circular points 3 and form light-refracting surfaces. The details of the dome shape and its radius of curvature and sizes depend on the properties of the substance 5, on the properties of the substrate surface 4 and on the solidification conditions.
  • FIGS. 7 and 8 show possible basic shapes 12, 13, 14 for graphic patterns, as well as basic shapes 8, 10 of the solidified liquid substance 5 Basic shapes can be easily produced, for example, with inkjet print heads that are moved relative to the substrate 2, by droplets or continuous dye or material streams being applied to the substrate. Of course, in addition to the inkjet technology, other reproduction processes are also suitable for producing the graphic patterns
  • FIGS. 7 and 8 A wide variety of lenticular alternating images can be realized from the basic shapes shown in FIGS. 7 and 8. Examples are shown in FIGS. 1, 2 and 7-11.
  • the strip-shaped graphic patterns of FIGS. 9 and 10 can each be single-color or consist of rastered partial graphics which 1, as explained in the introduction, from different viewing directions to form different planar images.
  • the color areas 21 ac can be created, for example, with three inkjet nozzles which drop droplets of different sizes one after the other onto the same point. First, point 21 a and then the points 21 b and 21 c generated with decreasing droplet volume
  • FIG. 12 shows a preferred one Embodiment of a device for realizing the manufacturing process for lenticular alternating images
  • An inkjet nozzle 26 generates the graphic patterns 3 on the underside 1 of a transparent substrate 2, which is continuously transported in the direction 40
  • the nozzle 27 On the other side and in the direction of movement 40 behind the nozzle 26, the nozzle 27 is arranged, which dispenses droplets of a liquid, transparent substance 28 on the upper side 4 of the substrate 2.
  • the fixed nozzles 26 and 27 are synchronized so that the substance 28 is, for example, direct strikes the substrate 2 above the point 3b so that the light-refractive dome formed during the solidification lies directly above the point 3b.
  • the nozzles 26 and 27 can also lie directly opposite one another and be synchronized in such a way that the droplets emitted by both nozzles affect the substrate 2nd Achieve at the same time Such an arrangement would be insensitive to variations in substrate speed 40
  • nozzle movements 30 and 31 and substrate movement 32 are also possible.
  • a print head consisting of 26 and 27 can also move transversely to the stationary substrate, which after each
  • each strip 34 of the graphic pattern is produced by 6 nozzles 33 combined to form an array 35 in the depth of the figure 13 could be further nozzles or nozzle arrays, which, for example, generate the basic colors of a color image.
  • Corresponding arrangements are known from inkjet printing technology.
  • the nozzles 36 for generating the lens array 37 are also advantageously combined to form inkjet arrays 38. 39 provides the expediently rigid connection of the two Nozzle arrays
  • phase change substances known from inkjet technology, which are in a solid state of aggregation, are particularly suitable as a transparent liquid after they have solidified.
  • Phase change substances are liquefied by heating just before a droplet is fired Immediately After striking the substrate, they solidify into dome-shaped bodies.
  • the rapid solidification on the substrate means that the formation of the lenticular dome cannot be disturbed by disturbances during the solidification process.
  • the rate of solidification can be regulated by cooling the substrate and regulating the droplet size and temperature
  • Physically drying substances can also be used as transparent liquids for the production of the lenticular grid. The course of the drying process can be regulated by parameters such as temperature, ambient pressure and others
  • polymer films, transparent papers, glasses, crystals, etc. are suitable as transparent substrates.
  • the terms "transparency”, "graphic pattern” or “color” are not otherwise to be understood as being restricted to the visible spectral range.
  • lens grids that can be detected with infrared detectors are also to be understood.
  • Alternating images can be realized, the substrates of which must be transparent in the infrared, but not necessarily in the visible.
  • the graphic patterns of such lenticular alternating images can also be “invisible”.
  • Such lenticular alternating images are suitable, for example, as hidden security features
  • FIG. 14 illustrates that lenticular alternating images can also be applied to any surface, including non-transparent surfaces, by stacking the graphic patterns 45 and the light-refracting surfaces 44 on top of one another However, changing the direction of viewing is restricted
  • the distance of the curved, refractive surfaces from the graphic pattern can, however, be increased by increasing the outflow quantity of the substance 44 in the case of a nozzle array, whereby a transparent base layer with modulated, curved refractive surfaces is formed
  • Figure 15 shows an example of a device with which a transparent, sheet-shaped substrate 2 is first printed on the back in a conventional printing process with an illustrated printing roller 53 and 55, the counter-pressure roller represent the inking unit for the printing roller 53, 56 regulates the web tension of the Substrate 2 rolling off roll 57 and rolled up onto roll 58 After printing on the reverse side, substrate 2 passes through a device for partial application of a lenticular interchangeable image.
  • the module consists of the 39 inkjet arrays 35 and 38 which are rigidly connected to one another and is in line with the in FIG. 13 explained device identically. Then the back is overprinted by a printing device 59 with a background color 60, so that the information printed by printing roller 53 becomes visible against a background in color 60.
  • the substrate 2 is in parts with an alternating lenticular image provided self ve
  • the printing of a background color 60 can also be omitted, so that the printed product contains printing information on a clear background and a lenticular screen change image.
  • so-called "no label look” labels for packaging can be provided with lenticular screen change images.
  • the process can also be carried out with printed sheets or with rigid media and printing plates, for example for printing on the inner, transparent sector of blank CDs or of CD, MC or MD packaging can be used
  • lenticular alternating images can also be partially applied to a transparent substrate, which is later laminated cold or hot onto a printed product.
  • the light-refracting surfaces are not deformed by the pressure or temperature that occurs during laminating
  • the graphic patterns can also be produced with other reproduction processes.
  • the only essential thing for the invention is that the positions of the reproduction results exactly match the positions of the transparent, liquid material that, after solidification, the curved, refractive surfaces forms, let synchronize
  • exposures based on lasers or thermal light sources, laser or thermally induced material coloring or transfers, and electrostatic or electrophotographic printing processes are also suitable for generating graphic patterns
  • Laser-induced coloring of the material can also occur in the depth of the transparent substrate

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Vascular Medicine (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

L'invention concerne un procédé et des dispositifs permettant de réaliser de façon économique et variable des images changeantes à moirage sur des surfaces planes. Selon ledit procédé, un motif graphique est appliqué sur un côté d'un substrat transparent plan tandis que sur l'autre côté de ce substrat, dans une position définie par rapport audit motif graphique, est appliquée une substance liquide transparente de telle sorte, qu'après sa solidification, sont formées des surfaces réfringentes constituant des moirages qui se trouvent dans des positions exactes par rapport au motif graphique. Le motif graphique et la substance liquide transparente sont appliqués sur le substrat par deux têtes d'impression à jet d'encre disposées chacune sur un côté du substrat et reliées mutuellement rigidement. La liaison rigide de ces deux têtes d'impression à jet d'encre garantit le positionnement exact des surfaces réfringentes par rapport au motif d'impression.
PCT/DE1999/000297 1998-01-30 1999-01-30 Procede et dispositifs pour la realisation d'images changeantes a moirage WO1999039221A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU33253/99A AU3325399A (en) 1998-01-30 1999-01-30 Method and devices for producing lens-grid alternating images

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19804858.0980130 1998-01-30
DE1998104858 DE19804858A1 (de) 1998-01-30 1998-01-30 Verfahren und Vorrichtungen zur Herstellung von Linsenraster-Wechselbildern

Publications (1)

Publication Number Publication Date
WO1999039221A2 true WO1999039221A2 (fr) 1999-08-05

Family

ID=7856920

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/000297 WO1999039221A2 (fr) 1998-01-30 1999-01-30 Procede et dispositifs pour la realisation d'images changeantes a moirage

Country Status (3)

Country Link
AU (1) AU3325399A (fr)
DE (1) DE19804858A1 (fr)
WO (1) WO1999039221A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005082639A2 (fr) * 2004-02-18 2005-09-09 Giesecke & Devrient Gmbh Element de securite a gaufrage et son procede de fabrication

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100692B4 (de) * 2001-01-09 2004-08-19 Konrad Hornschuch Ag Dekorfolie mit 3-D-Effekt und Verfahren zu ihrer Herstellung
DE10142958A1 (de) * 2001-09-03 2002-10-02 Siemens Ag Anzeigeeinheit mit einem zwei unabhängige Bilder streifenweise verschachtelt darstellenden Display
US8867134B2 (en) 2003-11-21 2014-10-21 Visual Physics, Llc Optical system demonstrating improved resistance to optically degrading external effects
EP2332737A3 (fr) * 2003-11-21 2012-02-08 Visual Physics, LLC Systeme de securite micro-optique et de presentation d'image
ES2434443T3 (es) 2005-05-18 2013-12-16 Visual Physics, Llc Sistema de presentación de imágenes y de seguridad micro-óptico
EP3872557A1 (fr) 2006-05-12 2021-09-01 Crane & Co., Inc. Structure de film micro-optique seule ou conjointement avec un document ou étiquette de sécurité projetant des images en coordination spatiale avec des images statiques et/ou d'autres images projetées
US9104033B2 (en) 2008-11-18 2015-08-11 Rolling Optics Ab Image foils providing a synthetic integral image
EP3626473A1 (fr) 2009-08-12 2020-03-25 Visual Physics, LLC Dispositif de sécurité optique d'indication de sabotage
MY159709A (en) 2011-01-28 2017-01-13 Crane & Co Inc A laser marked device
AU2012299113B2 (en) 2011-08-19 2015-05-07 Visual Physics, Llc Optionally transferable optical system with a reduced thickness
DE102011115125B4 (de) 2011-10-07 2021-10-07 Giesecke+Devrient Currency Technology Gmbh Herstellung einer mikrooptischen Darstellungsanordnung
FR2985324B1 (fr) * 2011-12-29 2015-01-16 Oberthur Technologies Dispositif de securite
RU2621558C9 (ru) 2012-08-17 2017-12-05 Визуал Физикс, Ллс Процесс переноса микроструктур на конечную подложку
CN104838304B (zh) 2012-09-05 2017-09-26 卢门科有限责任公司 用于基于圆形和正方形的微透镜阵列以实现全容积3d和多方向运动的像素映射、排列和成像
CN105339180B (zh) 2013-03-15 2018-05-11 光学物理有限责任公司 光学安全性设备
US9873281B2 (en) 2013-06-13 2018-01-23 Visual Physics, Llc Single layer image projection film
AU2015235889B2 (en) 2014-03-27 2018-10-11 Visual Physics, Llc An optical device that produces flicker-like optical effects
US10766292B2 (en) 2014-03-27 2020-09-08 Crane & Co., Inc. Optical device that provides flicker-like optical effects
CA2955372C (fr) 2014-07-17 2022-10-11 Visual Physics, Llc Materiau en feuille polymere ameliore destine a etre utilise dans la fabrication de documents de securite polymeres tels que des billets de banque
RU2707595C9 (ru) 2014-09-16 2020-02-14 Кране Секьюрити Технолоджис, Инк. Защищенный слой линз
CN107250459B (zh) 2015-02-11 2021-06-11 克瑞尼股份有限公司 用于安全器件到基底的表面施加的方法
EP4026702A1 (fr) 2017-02-10 2022-07-13 Crane & Co., Inc. Dispositif optique de sécurité lisible par machine
DE102022111098B3 (de) * 2022-05-05 2023-06-01 Koenig & Bauer Ag Druckmaschine zur Herstellung eines Sicherheitsdokuments

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005082639A2 (fr) * 2004-02-18 2005-09-09 Giesecke & Devrient Gmbh Element de securite a gaufrage et son procede de fabrication
WO2005082639A3 (fr) * 2004-02-18 2005-11-10 Giesecke & Devrient Gmbh Element de securite a gaufrage et son procede de fabrication
EP1718475A2 (fr) † 2004-02-18 2006-11-08 Giesecke & Devrient GmbH Element de securite a gaufrage et son procede de fabrication
EP1718475B2 (fr) † 2004-02-18 2015-07-01 Giesecke & Devrient GmbH Element de securite a gaufrage et son procede de fabrication

Also Published As

Publication number Publication date
AU3325399A (en) 1999-08-16
DE19804858A1 (de) 1999-08-05

Similar Documents

Publication Publication Date Title
WO1999039221A2 (fr) Procede et dispositifs pour la realisation d'images changeantes a moirage
EP2321673B1 (fr) Procédé de production de microlentilles
EP3230080B1 (fr) Élément de sécurité optiquement variable
US10889107B2 (en) Product alignment using a printed relief
DE112011102475B4 (de) Optisch variable Mehrkanalvorrichtung
EP1779335A1 (fr) Support de donnees ayant une structure optiquement variable
DE102015015991A1 (de) Sicherheitselement mit Linsenrasterbild
WO2007045335A2 (fr) Procede de production d'une image lenticulaire, procede de production d'une ecriture braille, produits realises au moyen de ces procedes et machine d'impression pour la production d'images lenticulaires, de lentilles optiques ou de caracteres braille
WO2007093300A2 (fr) Élément de sécurité doté d'une structure à effet optique variable
DE102011083940A1 (de) Gedruckte längliche Linsen für das Drucken von länglichen Linsenstrukturen
EP2897812B1 (fr) Élément de sécurité à système de visualisation
WO2011015384A1 (fr) Dispositif de sécurité
EP2164705B1 (fr) Un procédé pour la fabrication d'un matériau continu sans couture pour les éléments de sécurité, un matériau continu sans couture pour les éléments de sécurité ainsi que des procédés pour la fabrication de cylindres d'impression ou d'estampage
DE2034679B2 (de) Druckeinrichtung mit lichtstrahl
EP2338150A2 (fr) Dispositif de sécurité
EP3013596B1 (fr) Élément de sécurité doté d'éléments optiques à focalisation adaptative
DE102019109998B4 (de) Sicherheitsmerkmal basierend auf einer ausrichtung von spiegeln an einer einzigen achse in einer ein mikrospiegelarray bildenden strukturierten oberfläche
DE19754776A1 (de) Verfahren und Vorrichtungen zur Herstellung von grafischen Sicherheitsmerkmalen
DE10126368A1 (de) Verfahren und Vorrichtung zur Herstellung eines tragbaren Datenträgers
DE60200552T2 (de) Verfahren um latente Bilder zu drucken
DE69215450T2 (de) Thermisches Aufzeichnungsgerät
WO2023016670A1 (fr) Procédé de production d'un élément de sécurité, élément de sécurité pour un support de données, support de données et feuille de stratification
DE102022002471A1 (de) Verfahren zur Herstellung eines Sicherheitsmerkmals, Sicherheitsmerkmal für einen Datenträger, Datenträger und Laminierblech
EP2462565B1 (fr) Dispositif de sécurité
DE202006005299U1 (de) Prägezylinder oder Prägehülse und Vorrichtung zum Herstellen einer Prägestruktur für eine Dekorfolie und für eine Tapete oder Bordüre

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AU CA CN JP NZ SG US

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WA Withdrawal of international application
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: CA