WO2012022463A1

WO2012022463A1 - Verification of security elements with window and other item of information

Info

Publication number: WO2012022463A1
Application number: PCT/EP2011/004113
Authority: WO
Inventors: Martina Staudigl; Peter Schiffmann
Original assignee: Giesecke & Devrient Gmbh
Priority date: 2010-08-20
Filing date: 2011-08-16
Publication date: 2012-02-23
Also published as: EP2606474B1; AU2011291010B2; EP2606474A1; MX2013002009A; DE102010035017A1; AU2011291010A1

Abstract

The invention relates to a method for verifying value documents, such as bank notes, identification cards, payment cards, admission tickets, lottery tickets or the like, or other elements for product protection, said documents having a substrate with at least one translucent region. A first item of information lies in at least one translucent region of the substrate, a separate display being used through which a second item of information that correlates to the first item of information is shown at least in some regions. At least one other item of information is hidden in the first and/or second item of information, said other item of information not being detectable and/or readable to an observer without an aid. The substrate with the first item of information is laid over the second item of information that is shown on the separate display, and the hidden item of information can be detected and/or read under transmitted light as a moiré pattern and/or as metamerism. The invention further relates to a corresponding method for verifying or testing valuable objects that have a display, for example a computer, notebook, or laptop, a cash register of a cash register system, or a handheld device. According to the invention, at least a third item of information that is detectable and/or readable to the observer without an aid is additionally included in the first and/or second item of information.

Description

Verification of security elements with window and further information

The invention relates to a method for verifying documents of value, such as banknotes, identity cards, payment cards, tickets, batches or the like, or other elements for product assurance, which have a substrate with at least one light-transmissive region, wherein in at least one light-transmissive region of the substrate Information is arranged, wherein a separate display is used by the separate display at least partially a second information is displayed, which correlates with the first information, in the first and / or second information at least one further, unrecognizable to a viewer without tools and / or readable information is hidden, the substrate is placed with its first information about the second information displayed on the separate display and the hidden information in transmitted light as Moire pattern and / or Metamer ie recognizable and / or readable , The invention further relates to a corresponding method for verifying or checking valuables having a display, for example a computer, notebook or laptop, a cash register of a cash register system, television or a hand-held device.

A generic method is known from WO 2009/019038 AI. In this case, the hidden information advantageously contains, for example, the emission value or the currency of a banknote and can thus serve for checking the authenticity at a point-of-sale terminal. Here, the banknote is placed on the display of the POS terminal and it shows for the cashier the information hidden on the banknote information in plain text. The invention has the object of developing the generic method for authentication of value documents, such as banknotes, identity cards, payment cards, tickets, tickets or the like, or other elements for product assurance such that the protection against forgery and attractiveness to the user or user is further increased.

This object is solved by the features of the independent claims. Further developments of the invention are the subject of the dependent claims.

In this case, the invention encompasses the abovementioned generic method, wherein according to the invention, at least one third information which can be recognized and / or read by the observer without aids is additionally contained in the first and / or second information.

The invention thus represents an extension or supplement of the subject matter of WO 2009/019038 Al, the entire subject matter and scope of WO 2009/019038 Al being fully incorporated into this invention. This means in particular that any embodiments, embodiments and concretizations of WO 2009/019038 AI can also be used for this invention.

A particular advantage of the invention is that the first and / or second information uninteresting to a viewer, which usually represents an unstructured, uniform area, is optically enhanced by the third, visible information. Preferably, the third information represents an alphanumeric text, for example a single letter or a number, or even an arbitrary sequence of letters and / or numbers, a symbol or any graphic.

The third information may be in a meaningful relationship to the hidden information. Furthermore, the third information may include part of an information and the hidden information displayed may include the overall information.

In a preferred embodiment, the first, second and third information are each formed by a grid of linear and / or punctiform elements. In this case, the line-shaped and / or punctiform elements of the grid of the third information are preferably staggered relative to the line-shaped and / or punctiform elements of the grid of the first information and additionally or alternatively have a different line thickness or a different point diameter.

In a further preferred embodiment, at least one light-permeable region of the substrate is formed by a transparent window. A preferred embodiment relates to a card with a verification grid which is delivered together with a television set or packaged by a retailer into a sold television set. Here, the grid of the card is matched to the pixel grid of the TV. By placing the card on the display of the TV can For example, the customer may ask for a warranty number or check if the TV is an original or a counterfeit or reimport. In addition to WO 2009/019038 A1, a subsequent individualization can be introduced into all information by, for example, using a laser to modify line thicknesses by ablation or adding by means of blackening. Likewise, the hidden information can be generated only by laser. Possible fields of application are, in particular, identification documents, such as passports or identity cards.

In a further advantageous embodiment, the information printed on a transparent window is additionally inked or printed with one or more transparent colors which can form a uniform inking or a motif print. The Einf coloring or the motif print can be arranged within the window area or overlapping partially outside the window area. The print motifs or colorings can be visible visually or only after excitation by means of UV light.

In a further advantageous embodiment, the grid is applied both on the front or the back or on both sides of the transparent window. In a particular embodiment, the grid is brought into partial segments on both the front and on the back, which complement each other in a general view to a total information. This embodiment is particularly advantageous as copy protection.

The grid structure can not only by printing processes, such as offset printing, gravure, flexographic printing, ink-jet printing, thermal transfer printing, Laser printing or stitch print, but also be produced by indirect methods according to a further advantageous embodiment. An example of such an indirect process is, in particular, the cold-oil application in which an adhesive or a special ink is first printed and then a carrier film with a metallization or a covering coating is pressed onto the still sticky adhesive or the still sticky special ink , Subsequently, the film is peeled off, wherein the metallization or the opaque coating is transferred to the substrate only in the area of the sticky adhesive or the still sticky special color.

In a further advantageous embodiment, the applied raster structure additionally contains in subregions further hidden information in the form of minute line breaks or line modulations, which can only be recognized by means of a microscope or identified as a code, for example a hidden barcode. During verification, this additional information does not occur and is either misinterpreted by a forger as misprints or not perceived visually. In a further advantageous embodiment, a line of a grid or the part of a line of a grid is performed as a microtext that can be recognized or read only by means of a microscope or magnifying lens.

In a further advantageous embodiment, the printed grid consists of a similar structure of a color absorbing in the infrared wavelength range and a color transparent in the infrared wavelength range. In the case of verification, the colors or regions which absorb differently in the infrared wavelength range and which are almost identical in the visually visible wavelength range are not distinguished from each other. distinguishable. With a special sensor, this hidden feature is easily recognizable and machine-readable. Advantageously, with this embodiment, a visually recognizable pattern, such as a picture motif or pattern, or a machine-readable code, such as a bar code, hidden.

In a further advantageous embodiment, color-matched magnetic and non-magnetic colors are combined with one another instead of the colors absorbing differently in the infrared wavelength range.

In a further advantageous embodiment, subregions differ in their luminescence property, such as, for example, their hue or excitation wavelength, or subdivide into luminescent and non-luminescent regions.

The advantages of the invention will be explained with reference to the following examples and additional figures. The described individual features and embodiments described below are inventive in their own right, but are also inventive in combination. The examples illustrate preferred embodiments, to which, however, the invention should not be limited in any way. The proportions shown in the figures do not correspond to the conditions present in reality and serve only to improve the clarity. The illustrations in the figures are highly schematized for better understanding and do not reflect the realities. For this purpose, the described embodiments are reduced for better clarity due to the essential core information. In the practical implementation can be much more complex patterns or images in single or multi-color printing come into use. The information presented in the following examples can also be replaced by arbitrarily complex image or text information. The various embodiments are not limited to use in the form described, but can be combined to increase the effects with each other.

1 schematically shows: a substrate according to the invention with a window and a first and a third information (FIG. 1 a), a separate display with a second information (FIG. 1 b) and the superimposition of window and display in a plan view (FIG. 1 c) .

2 shows a tenfold enlargement of three different cutouts (FIGS. 2a to 2c) from FIG.

Fig. 3 shows an embodiment with a window with four different

grids,

4 shows the grid of FIG. 3 when superposed with a display, FIG.

5 shows a window with a review information in the form of the letter "E",

6 shows an overlay of the window from FIG. 5 with a display, FIG.

FIGS. 7 to 9 show a further embodiment of the invention. 1 shows a value document in FIG. 1 a, which has a substrate with at least one light-permeable region, wherein first information is arranged in at least one light-permeable region of the substrate. The first information shows a raster perceived by a viewer as an unstructured light gray area in the form of a "keyhole." Within the first information, a third information is arranged, and the third information shows a raster viewed by a viewer as a dark gray area This translucent area is now overlaid on a display which, according to Fig. 1b, shows a second piece of information, the second piece of information consisting of a grid which is viewed by a viewer as an unstructured light gray area in the form of a "keyhole". is perceived. The information hidden in the first information, which becomes visible through the overlay, is shown in FIG. 1c. Within the bell is the letter "B" and outside the bell a pattern in the form of sound waves emanating from the lower left edge of the "keyhole".

This hidden information is hidden in the first information, as shown in FIG. 2, by an offset of adjacent line elements of the raster (FIG. 2 a), a modulation of the line thickness of adjacent line elements of the raster (FIG. 2 b), i. by lines of different thickness, and by a combination of line offset and different line thickness (Figure 2c). In FIGS. 2 a to 2c, the area shown in the respective left-hand illustration is shown enlarged ten times in the respective right-hand illustration.

In the previous, first exemplary embodiment, the pattern with regard to the raster structure was applied to a specific display with a specific pixel pattern. or grid pitch matched. However, with a high-resolution display, you can scale down to a standard resolution to decode the same pattern with different displays. Alternatively, it is also possible to provide a pattern with different screen rulings to enable a decoding of the patterns with different displays.

A second exemplary embodiment according to FIG. 3 shows four quadrants 3, 4, 5 and 6 in a window 2 in a substrate 1, which have screen rulings for various displays. For example, quadrant 3 shows a grid with grid structures having a first grid spacing, quadrant 4 a grid with grid structures having a smaller grid spacing than grid 3, quadrant 5 a grid with grid structures having a smaller grid spacing compared to grid 4, and quadrant 6 a grid with grid structures that have a smaller grid spacing than grid 5. The raster structures are thus structured more and more finely from raster 3 to raster 6.

Depending on the display used, one of the four quadrants displays readable decrypted information. If the window 2 is placed over a display whose pixels have a specific pixel pitch, the grid spacing from quadrant 4, for example, coincides with the pixel pitch of the display, so that the information "EU" appears according to FIG. 5 shows a see-through info 9 in the form of the letter "E", which was produced with a grid having a line width greater than the line grid 8 of the environment of the transparency info "E." The line frequency is the same "a greater opacity in the review. According to FIG. 6, an additional information 10 in the form of the text "50 dollars 50" hidden in the line grids 8 and 9 is visible through a line offset in the case of an overlay on a display.

If the grids are applied with an opaque black or colored paint or a metallic coating (e.g., vacuum evaporation in combination with demetallization) or a metallic paint, the overhead information is identical to the review info. This means that the information "E" can be seen both in appearance and in transparency The contrast depends on the opacity or density difference between the two areas If the screens are printed with a white opaque color or transferred by transfer or cold stamping process) with an opaque white transfer coating, so only a Durchsichtsinfo shows in addition to display recognizable info.

In a fourth exemplary embodiment, a transparent interference layer is additionally applied. When using an example printed in black, there is an additional color shift color which is most intense in the area of the info "E" since this area has the largest optically effective coverage.

The interference color can be on both the front and the back of the black grid. If the coating is on the black grid (front side), this pattern on a black background shows only the information of the interference color (square in the example). If the pattern is placed on the back side, then the area of the black grid in the environment of the info "E" and as a clear difference in intensity in the area of the info "E" is also shown in an intensity difference. The other properties (display info and transparency info) are almost not disturbed. The interference layer may consist of a thin metal vapor or an interference color, which is preferably applied by screen printing.

The pigments contained in the interference screen printing ink may consist of LCP, mica-based interference pigments, etc.

In a fifth embodiment, a non-transparent pattern is generated but with supervisory information. In this example the environment of the info "E" was printed with a cover white grid and the information "E" with a black grid.

If the raster frequency and the line width of the grid lines used are the same and both colors have the same opacity, there is no additional information in the review. By adjusting the line width it is also possible to compensate for any difference in opacity of the colors.

In a sixth embodiment, an interference layer is additionally included. Compared to the fourth embodiment, the information "E" in the supervision is more intense recognizable because the interference color is visually barely visible on the cover grid.

A seventh embodiment differs from the fifth embodiment in that the line widths of the areas with information "E" and in the environment of the information "E" differ markedly, thereby creating areas with different opacity. Thus, in addition to the supervisor, there is an identical overview info. An eighth embodiment corresponds to the seventh embodiment, but additionally has an interference coating.

The ninth exemplary embodiment, according to FIG. 7, represents a further increase in complexity. FIG. 8 shows the view of the grid from FIG. 7 in a plan view and FIG. 9 in a plan view. This example consists of an opaque 8 printed in opaque white with a small line thickness: in the area of the supervisory info "E", the grid consists of a black printed line grid 11 with the same line frequency, but with thinner lines, and in the field of addition of Info "E" to "8" in the

Review of a screen printed with opaque white 12 with the same grid spacing and line thickness as the black printed line grid 11. The opacity of the last two grids 11 and 12 is similar, so that in review, an "8" can be seen.

Due to line offset in the individual areas, it is also possible to integrate a display information.

By overprinting with an interference color, i. a color with interference pigments, a color shift or a color change on tilting becomes visible in the area of supervisory information. At the same time, by placing the object to be verified on a black background, it is possible to visualize the complete printing information of the interference color.

Claims

Patent claims

1. A method for verifying documents of value, such as banknotes, badges, payment cards, tickets, batches or the like, or other elements for product assurance, comprising a substrate having at least one translucent area, wherein in at least one translucent area of the substrate Information is arranged, where

- a separate display is used,

a second information, which correlates with the first information, is displayed at least in regions by the separate display,

in the first and / or second information, at least one further information which is unrecognizable and / or readable by a viewer without aids is hidden, the substrate is laid with its first information about the second information which is displayed on the separate display

- and the hidden information in transmitted light as moire pattern

and / or becomes recognizable and / or readable as metamerism, characterized in that

in the first and / or second information at least one recognizable and / or readable to the viewer without aids third information is included. A method for verifying or verifying valuables having a display, wherein

a separate verification element which has at least one substrate with at least one light-transmissive region, wherein first information is arranged in at least one light-permeable region of the substrate,

wherein a second information is displayed by the display at least regionally, which correlates with the first information,

in the first and / or second information, at least one further information which is unrecognizable and / or readable by a viewer without aids is hidden,

- The substrate is placed with its first information about the second information displayed on the display, and

- The hidden information in transmitted light as Moire pattern and / or metamerism is recognizable and / or readable, characterized in that

in the first and / or second information at least one recognizable and / or readable to the viewer without aids third information is included.

A method according to claim 1 or 2, characterized in that the third information represents an alphanumeric text, a symbol or any graphic. Method according to one of the preceding claims, characterized in that the first, second and third information are each formed by a grid of line-shaped and / or punctiform elements.

A method according to claim 4, characterized in that the line-shaped and / or punctiform elements of the grid of the third information with respect to the linear and / or punctiform elements of the grid of the first information

- Are arranged offset and / or

- a different line thickness or a different

Point diameter have.

Method according to at least one of the preceding claims, characterized in that at least one light-transmissive region of the substrate is formed by a transparent window.

Method according to at least one of the preceding claims, characterized in that the at least one light-permeable region of the substrate is combined with a transparent or at least translucent further security feature.