Patent ID: 6186398
Filing Date: 2001-02-13
Classification: G06K,Y10T

Abstract:
A magnetic card comprising;a substrate;a magnetic layer provided on the substrate, in which information is magnetically recorded in such a manner that the recorded information can be magnetically read;a thin film layer made from a metal or metallic compound having the property of concealing the underlying layer, provided to cover at least the magnetic layer;a print layer which is provided either partly or entirely over the surface of the substrate to cover at least a part of the thin film layer; anda light-diffractive structure layer having a light-diffractive pattern from which an image can be reconstructed by the diffraction of light, which is provided either partly or entirely over the surface of the substrate to cover at least a part of the print layer, the light diffractive structure layer having an overlapping region that overlaps the print layer in the direction of thickness, the overlapping region of the light-diffractive structure layer being made either transparent or semitransparent;wherein the reading of the information recorded in the magnetic layer is performed by a magnetic output obtained from the magnetic layer through the thin film layer, the print layer and the light diffractive structure layer.