Patent 7284270 was granted and assigned to Konica on October, 2007 by the United States Patent and Trademark Office.
An IC card comprising: a core layer comprising therein an electronic element having a memory medium; an image receptive layer recording at least either text information or image information; and an optical variation element layer comprising an optical variation element, wherein the memory medium stores a characteristic information of the optical variation element layer and at least either the text information or the image information.