Data support with an optically variable structure
A variable and optical technology, applied in the direction of information-carrying cards, authenticity inspection of banknotes, handling coins or valuable banknotes, etc., can solve problems such as unsuitable for visual inspection
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example 1
[0114] Example 1 (Figures 2 to 13)
[0115] Figure 2 schematically shows a cross-sectional view along the line A-A of Figure 1, in combination with the optically variable structure of Figures 3, 4 and 5, wherein said embossing structure 4 consists of equidistantly arranged, uniform non-linear embossing The flower element 5 is formed, that is, as a periodic screen. The non-linear embossed element 5 is provided with a coating 7 which is formed as a multi-coloured pattern, wherein the individual colored areas are arranged on the sides of the non-linear embossed element.
[0116] The non-linear embossing elements 5 are designed as hillocks, which are preferably produced by embossing the data carrier and are clearly recognizable on the upper side of the data carrier, as shown in the cross-sectional view. If the data carrier is mechanically shaped with an embossing tool, negative deformations are shown on the underside of the data carrier material. This variant is only shown sche...
example 2
[0129] Example 2 (Figures 14, 15 and 16)
[0130] Fig. 14 shows a top view of an embossed structure 4 according to another embodiment of the invention, wherein the non-linear embossed element 11 comprises a four-sided pyramid. Figure 15 shows a top view of a relevant coating 7 according to the invention. It comprises rectangles 12, 13 usually arranged in different colours. Two differently colored rectangles 12 , 13 together form the basic pattern element and thus belong to one structural element 10 and have them arranged on opposite sides of the pyramid-shaped embossing element 11 . FIG. 16 shows a perspective view of a row of structural elements 10 , in each of which the rectangle 12 is discernible.
[0131] When viewed vertically, depending on the size of the rectangular area, the observer again observes a homogeneous flat color effect or directly a rectangular area. When the data carrier is turned and / or tilted again, a color interaction occurs.
example 3
[0132] Example 3 (Figure 17)
[0133] FIG. 17 shows another variant of the principle explained in example 2 according to the invention. The optically variable structure 3 has four different images, each of which is recognizable when viewed from the viewing direction marked with arrows 1 , 2 , 3 , 4 . The corresponding embossing structure is the same as in Example 2, comprising square pyramids 11 . The coating 7 according to the invention comprises basic pattern elements, which have essentially the same structure.
[0134] The basic graphic element consists of four triangles, where each triangle is arranged as an image part of one of the four images. A triangle designated as "1" belongs to a recognizable image in viewing direction 1, a triangle "2" belongs to a recognizable image in viewing direction 2, and so on.
[0135] If all image parts appear the same color, no image information is discernible when viewed vertically. In the case of a colored embodiment, the image in...
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