A security device formed by a hologram and a color shifting ink

Details A security device formed by a hologram and a color shifting ink A security device formed by a hologram and a color shifting ink

G - Physics

02

B

G02B 5/00 (2006.01) B41M 3/14 (2006.01) G02B 1/10 (2006.01) G02B 5/12 (2006.01) G02B 5/18 (2006.01) G02B 5/20 (2006.01) G02B 5/32 (2006.01) G02F 1/01 (2006.01) G09F 3/03 (2006.01)

Patent

CA 2587039

A method of forming a label on an object is provided, comprising the steps of coating a surface of the object with optically variable ink, and bonding a patterned structure to the object with a light transmissive adhesive over the optically variable ink. The patterned structure allows light to propagate therethrough, and may be a diffractive structure comprising one of: a semi transparent reflective layer, a high refraction index layer, and a patterned reflective coating. In one embodiment a hologram is hot stamped to a banknote or paper document printed with a color-shifting ink.

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