Method of providing a security document with a security feature, and security document
AssigneeFabrica Nacional De Moneda Y Timbre- Real Case De La Moneda
InventorsAntonio OLMOS, Maurizio LAZZERINI, Vincente GARCIA JUEZ
Life of this patent
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Abstract
A security document (1) comprises a paper document substrate (11) and a security element (2) embedded in said document substrate (11). The security element comprises an element substrate (21) and a material (22) sensitive to laser light. The method comprises the step of directing laser light (41) onto the document substrate (11) so as to alter said material (22), so as to provide said security element (2) with a detectable marking (3).
Claims17
Method of providing a security document with a security feature, said security document comprising a document substrate, said document substrate being a paper substrate, said security document further comprising a security element embedded in said document substrate, said security element comprising an element substrate, said security element further comprising a material sensitive to laser light,
- wherein the method further includes the step of directing laser light onto the document substrate so as to alter said material, so as to provide said security element with a detectable marking.
A security document, comprising a document substrate, said document substrate being a paper substrate, said security document further comprising a security element embedded in said document substrate, said security element comprising an element substrate in the form of a cellulose strip or patch, wherein said element substrate is provided with a material that is sensitive to laser light arranged so that said material can be sublimated with laser light, so as to provide said security element with a detectable marking due to partial sublimation of said material with laser light.
Dependencies are inferred from the claim text.