Apparatuses and methods for printing security documents
AssigneeDe La Rue International Limited
InventorsNikhil Parab, Andrew Francis Wallis, Martin Bannon, Miguel Augusto Da Silva Moura
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Abstract
A digitally printed security document includes: a security document substrate; a first digitally printed print working on a first surface of the substrate in a first region, the first print working including a first array of printed elements arranged according to a first grid of lattice points having a first pitch; and a second digitally printed print working on the first surface of the substrate in a second region, the second print working including a second array of printed elements arranged across a second grid of lattice points having a second pitch different from the first pitch.
Claims16
A digitally printed security document comprising:
- a security document substrate;
- a first digitally printed print working on a first surface of the substrate in a first region, the first print working comprising a first array of printed dots arranged according to a first grid of lattice points having a first pitch, the first print working being printed in a first material;
- and
- a second digitally printed print working on the first surface of the substrate in a second region, the second print working comprising a second array of printed dots arranged across a second grid of lattice points having a second pitch different from the first pitch, the second print working being printed in a second material different from the first material, the first material and the second material having different optical characteristics, wherein
- the first region and the second region at least partially overlap one another such that the first print working and the second print working at least partially overlap one another on the first surface of the substrate.
Dependencies are inferred from the claim text.