Patent ID: 6500602
Filing Date: 2002-12-31
Classification: B29D,G11B,Y10S

Abstract:
The method of producing the multi-layered optical fluorescent discs comprising the steps:producing a large number of relief-forming master-discs with the information recorded on the said discs, said information being coded in the form of spirally-arranged spatially-modulated micro-cavities (pits or grooves) for each of the layers formed in the multi-layered optical disc; preparing liquid solutions for an information luminescent medium (ILM); applying said solutions to the said master-disc; hardening the ILM solutions on the said master-disc; forming, in the said hardened layer, the information-modulated pattern in the form of the nodules capable of emitting luminescence and filling the space of micro-cavities (pits or grooves) in the said master-disc on the non-luminescent flat surface of the hardened layer of the ILM; removing said hardened layer of the ILM with the luminescent micro-nodules on a thin polymer film; forming the multi-layered disc by means of sequential transfer of various hardened ILM from various master-discs on a stack of layers of a fluorescent optical disc; and applying a protective coating on the first layer and applying the multi-layered structure with the ILM on a substrate from the side of the last information layer.