Method of manufacturing a security device
AssigneeDe La Rue International Limited
InventorLawrence George Commander
Life of this patent
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Abstract
A method of manufacturing a security device comprises: a) providing a transparent, plastics support layer releasably on a carrier layer; b) coating the plastics support layer with a radiation curable material, wherein either i) the radiation curable material inherently provides an optically variable effect or ii) the method further comprises providing the radiation curable material with an optically variable effect generating structure, c) curing the radiation curable material by exposure to suitable curing radiation; and, d) cutting through the cured material and the support layer along a boundary defining the security device.
Claims33
A method of manufacturing a security device, the method comprising
- i) providing a transparent, plastics support layer releasably on a carrier layer;
- ii) coating the plastics support layer with a radiation curable material, wherein either
- a) the radiation curable material inherently provides an optically variable effect or
- b) the method further comprises providing the radiation curable material with an optically variable effect generating structure,
- iii) curing the radiation curable material by exposure to suitable curing radiation;
- and,
- iv) cutting through the cured material and the support layer along a boundary defining the security device.
A security document carrying a security device manufactured by
- i) providing a transparent, plastics support layer releasably on a carrier layer;
- ii) coating the plastics support layer with a radiation curable material, wherein either
- a) the radiation curable material inherently provides an optically variable effect or
- b) the method further comprises providing the radiation curable material with an optically variable effect generating structure,
- iii) curing the radiation curable material by exposure to suitable curing radiation;
- and,
- iv) cutting through the cured material and the support layer along a boundary defining the security device.
Dependencies are inferred from the claim text.