| 摘要 |
<p>The invention relates to a new method for printing a security item on a substrate of which at least a part is made of a transparent material, a first part (3) of an image (2) being printed on one side of the transparent material, and a second complementary part (4) of the image (2) being printed on the opposite side of the transparent material such that, at at least some angles (P°) of view, the image (2) is visible or can be visualised as a whole in which the first (3) and second (4) part of the image (2) are not distinguishable.</p> |
