Sicpa Holding Sa

Olivier Lefebvre

Christophe Schaller

Pierre Degott

Patrick Magnin

Jean-Daniel Spitteler

Edgar Mueller

Patrick Veya

Edgar Müller

Anne Grosset

Catherine Fankhauser

Nicolas (deceased) Trachsel

The present invention relates to the field of the intaglio printing process. In particular, the present invention relates to a method that combines intaglio inks curable by oxidation with UV-VIS-curable intaglio inks on one intaglio plate or cylinder. The disclosed method results in an intaglio printed security element using advantageously the unalike properties of the different inks while enabling the printing on a standard printing press in one printing step.

Printing method with oxidative-drying intaglio ink and UV-VIS-curable intaglio inks

Printing method with oxidative-drying intaglio ink and uv-vis-curable intaglio inks

The present invention relates to the field of the protection of security documents, especially banknotes, against illegal actions such as robbery or theft. In particular, the present invention relates to the field of ink compositions for producing irreversibly magnetically induced images or patterns, said inks comprising multichromal microspheres, preferably bichromal microspheres () that are orientable upon application of a magnetic field and that comprise at least a first portion () comprising one or more dyes and/or pigments and at least a second portion () comprising one or more magnetic or magnetizable materials, wherein said microspheres () comprise as the first portion a core () having a surface and comprising the one or more dyes and/or pigments and as the second portion a partial coating () covering at least a portion of the surface of said core () and comprising the one or more magnetic or magnetizable materials.

Irreversibly magnetically induced images or patterns

The present invention is related to a security element comprising a pattern of at least three layers, wherein a first layer comprises a first material which is capable of interacting with a first electromagnetic radiation but does not interact with a second and third electromagnetic radiation, a second layer comprises a second material which is capable of interacting with said second electromagnetic radiation but does not interact with a first and third electromagnetic radiation, and a third layer comprising a third material which is capable of interacting with a third electromagnetic radiation but does not interact with a first and second electromagnetic radiation, wherein said pattern provides a visual motion effect when exposed to a sequential illumination with a light source capable of separately emitting at least said first, second and third electromagnetic radiation. The present invention is furthermore related to the security element, the use of the security element for the protection of a security document against fraud or illegal reproduction, to a method for manufacturing the security element or security document, and to a method for creating a visual motion effect by sequential illumination of the security element.

Security elements exhibiting a dynamic visual motion

An oxidatively curing intaglio printing ink is disclosed, comprising an oxidatively curable polymer, an anionic macromolecular surfactant, a wax component, and a salt of vanadium, preferably of the vanadyl (VO) ion, as the oxypolymerization inducing siccativating agent.

Vanadium-drier intaglio ink

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Montagny-pres-Yverdon, Switzerland

Olivier Lefebvre