Patent ID: 6925051
Filing Date: 2005-08-02
Classification: C09J,G11B,Y10T

Abstract:
1. A limited play data storage medium, comprising: at least one substrate; at least one of a reactive layer and a reactive adhesive layer disposed directly or indirectly adjacent to a surface of the substrate; wherein, if used, the reactive layer comprises at least one carrier material, at least one reactive material disposed within the at least one carrier material and at least one photo-bleaching retarder material disposed within the at least one carrier material; wherein, if used, the reactive adhesive layer comprises at least one adhesive material, at least one reactive material disposed within the at least one adhesive material and at least one photo-bleaching retarder material disposed within the at least one adhesive material; and wherein the at least one photo-bleaching retarder material comprises a polyhydroxy compound selected from the group consisting of resorcinol, 4-hexylresorcinol, chlororesorcinol, an oxidation product of resorcinol and 2,4-dihydrobenzoic acid.