Abstract: A security device includes: a substrate having a reflective surface; and a printed array of elements on a substantially flat area of the substrate. Each element is formed of a first material which is at least semi-transparent and a second material, the materials having different optical characteristics. Each element has a raised surface profile relative to the substrate including at least first and second sides sloping from the top of the element to at least respective edges of the element, at which the sides meet a substantially flat base surface of the element parallel to the substrate. The sides have different orientations and each lie at an acute angle to the substrate normal. Under illumination away from the substrate normal, when viewed from first and second viewing angles the element appears to have respectively substantially the optical characteristics of the first and second materials.

Abstract: A multi-layer card comprising a polymeric inlay layer having a first surface and a second surface, further comprising a first multi-layer film which is disposed on the first surface of the polymeric inlay layer, and further comprising a first polymeric overlay layer which is disposed on said first multi-layer film, such that the layer order is polymeric inlay layer, first multi-layer film and first polymeric overlay layer, wherein said first multi-layer film comprises: (i) a polyester base layer (B) comprising a crystallisable polyester (PB), and further comprising titanium dioxide in an amount of from about 1 to about 30 wt % by total weight of the base layer; (ii) a first heat-sealable copolyester layer (A1) disposed on a first surface of said polyester base layer; and (iii) optionally a second heat-sealable copolyester layer (A2) disposed on a second surface of said polyester base layer, wherein the copolyester (CPA) of each of the first and optional second heat-sealable copolyester layers is independently

Abstract: A multi-layer card comprising a polymeric inlay layer having a first surface and a second surface, further comprising a first multi-layer film which is disposed on the first surface of the polymeric inlay layer, and further comprising a first polymeric overlay layer which is disposed on said first multi-layer film, such that the layer order is polymeric inlay layer, first multi-layer film and first polymeric overlay layer, wherein said first multi-layer film comprises: (i) a polyester base layer (B) comprising a crystallisable polyester (PB), and further comprising titanium dioxide in an amount of from about 1 to about 30 wt % by total weight of the base layer; (ii) a first heat-sealable copolyester layer (A1) disposed on a first surface of said polyester base layer; and (iii) optionally a second heat-sealable copolyester layer (A2) disposed on a second surface of said polyester base layer, wherein the copolyester (CPA) of each of the first and optional second heat-sealable copolyester layers is independently

Abstract: A multi-layer film comprising: (i) a polyester base layer (B) having a first and second surface wherein the polyester of the base layer is a crystals isabie polyester; and (ii) a heat-sealabie copolyester layer (A) disposed on one or both surfaces of said polyester base layer (B); wherein the polyester base layer (S) comprises titanium dioxide particles in an amount of from about 1 to about 30 wt % by total weight of the base layer, wherein said particles are coated with an organic coating; and a multi-layer card comprising said multi-layer film, a polymeric inlay layer and a polymeric overlay layer such that the layer order is polymeric inlay layer, first multi-layer film and first polymeric overlay layer.