| 摘要 |
The present invention relates to a method for printing a security item on a substrate of which at least a part is made of a transparent material, whereby the method comprises following steps: printing a first image, which is visible or can be visualized, on one side of the transparent material; printing a second image, which is visible or can be visualized oh the opposite side of the transparent material, wherein the first and second image at least partially overlap; printing a third image, which is visible or can be visualized in transmission on the zones of the transparent material that are not covered by the first and/or second image.
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