Patent ID: 6819649
Filing Date: 2004-11-16
Classification: G11B,G11C,Y10T

Abstract:
An information storage medium comprising:a plurality of information layers, each of the plurality of information layers having information stored therein as an electroluminescent dye; and for each of the plurality of information layers, a pair of transparent electrode layers, one on either side of the information layer, for selectively applying a voltage to the electroluminescent dye for reproduction of the information, wherein: each of the plurality of information layers has at least one groove; and in each groove of each of the plurality of information layers, the electroluminescent dye is disposed as an active layer comprising: an electroluminescent material; a fluorescent quencher for the electroluminescent material; and a free radical generating compound that, when thermally degraded, generates free radicals that react with the quencher to bleach the quencher.