Sicpa Holding Sa

Bank of Canada

Bank of Canada Department of Banking Operations

Jessica Krueger

Claude-Alain Despland

Pierre Degott

Mathieu Schmid

Cécile Pasquier

Patrick Magnin

Gebhard Ritter

Andrea Victoria Firth

Raynald Demange

Christine Reinhard

Dominique Favre

Charles Macpherson

The present invention relates to the field of magnetic machine readable oxidative drying suitable for intaglio printing of security documents. In particular, the invention relates to magnetic oxidative drying ink for intaglio printing on a substrate, said magnetic oxidative drying ink having a viscosity in the range of about 3 to about 60 Pa s at 40&#xb0; C. and 1000 sand comprising a) at least one oxidative drying varnish, b) a plurality of core-shell pigment particles comprising a magnetic core and an external layer made of silver and c) one or more stabilizers selected from benzotriazole compounds.

Intaglio magnetic machine readable oxidative drying inks

The invention discloses an ink for the engraved steel die printing process, having a viscosity at 40&#xb0; C. between 3 Pa&#xb7;s to 15 Pa&#xb7;s, preferably 5 to 10 Pa&#xb7;s, and having a polymeric organic binder and magnetic pigment particle, characterized in that said magnetic pigment particles comprises a magnetic core material which is surrounded by at least one layer of another material. The surrounding layers, single or in combination, confer the pigment particle particular optical properties in the visible and/or in the near IR, chosen from high specular or diffuse reflectance, spectrally selective absorption or reflection, and angle-dependent absorption or reflection, and allow for the formulation of inks having a large gamut of color and other optical functionalities.

Clear magnetic intaglio printing ink

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Savigny, Switzerland

Jessica Krueger