Patent ID: 7220535
Filing Date: 2007-05-22
Classification: B41M,B42D,G06T,G07F,G11B,H04N

Abstract:
1. A method to apply an information bearing marking to an optical media, said method comprising: applying a coating to at least a portion of a surface of said optical media, said coating comprising at least one material sensitive to UV light, wherein said coating comprises at least one of a laser dye, a fluorescent dye, a metal chelate, an organic phosphor, and an inorganic phosphor; creating an image of an information bearing marking using a convention for representation of information; and photobleaching the coating to by exposing the coating to the UV light in a pattern derived from said image to reproduce said information bearing marking upon said optical media, wherein said photobleaching comprises photobleaching the at least one of a laser dye, a fluorescent dye, a metal chelate, an organic phosphor, and an inorganic phosphor.