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US 6,659,508 B1Granted
Security documents
AssigneeNote Printing Australia Limited
InventorsJoshua Robert Nemeth, Wayne Kevin Jackson
Life of this patent
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AssigneeNote Printing Australia Limited
InventorsJoshua Robert Nemeth, Wayne Kevin Jackson
Estimating the term…
A security document, banknote, bond, travellers check, passport or token, including a substrate (1), said substrate having a device including a first macro-embossing (2, 3) of the substrate having a predetermined feature, and a second micro-embossing of smaller dimensions formed in or on said predetermined feature of said embossing. The first embossing being formed to hide and reveal said second embossing at predetermined viewing angles α, β. The macro-embossing may comprise lines having a height of about 20 microns and a spacing of 80 microns, and the micro-embossing in the form of lines or dots (4) to a height of about 2 to 5 microns. The lines have a predetermined height (H) and a predetermined spacing (S) such that the ratio S:H is typically from about 6:1 to 2:1. A transparent portion or clear window (W) of a polymer substrate (1) can be provided with embossing such that the first embossing is able to hide and reveal the finer second embossing at various viewing angles by using the gloss and transmission properties of the transparent substrate rather than the traditional reflection and absorption properties of the printed media.
A security document or token, including a substrate, said substrate having a security device including a first embossing of the substrate having a predetermined feature, and a second embossing of smaller dimensions formed on said predetermined feature of said first embossing, said first embossing being formed to hide and reveal said second embossing at predetermined viewing angles, wherein the first embossing includes line or dots having a Height H and Spacing S, the height varying from about 5 microns to a maximum corresponding to a maximum embossable height for the particular substrate, the spacing depending on the height with a ratio S:H varying from about 6:1 to about 2:1.
A security document or token, including a substrate, said substrate having a security device including a first embossing of the substrate having a predetermined feature, and a second embossing of smaller dimensions formed on said predetermined feature of said first embossing, said first embossing being formed to hide and reveal said second embossing at predetermined viewing angles;
A security document or token, including a substrate, said substrate having a security device including a first embossing of the substrate having a predetermined feature, and a second embossing of smaller dimensions formed on said predetermined feature of said first embossing, said first embossing being formed to hide and reveal said second embossing at predetermined viewing angles;
Dependencies are inferred from the claim text.