Patent ID: 7226637

Claim:
A method of making an optical information storage medium, the method comprising: (a) providing a base and a covering layer, with at least one of the base and the covering layer having a first relief pattern on a side; (b) disposing a polymerizable composition in contact with the side(s) having the relief pattern and between the base and covering layer while spinning the base, the polymerizable composition and the covering layer to distribute the polymerizable composition; (c) polymerizing the polymerizable composition while the polymerizable composition is distributed between the base and the covering layer to form a polymerized layer having at least one second relief pattern corresponding to the first relief pattern(s); (d) separating the polymerized layer from the first relief pattern(s) to provide a layer having a specific arrangement of a plurality of recesses; (e) preparing a filling composition comprising a fluorescent dye, a polymerizable substance and a solvent wherein the polymerizable substance comprises a first compound having at least one glycidyl ether functionality that is polymerizable by hybrid mechanism in an amount of 0.1–85 wt % of the substance, a second compound having an epoxy group that is polymerizable by cation mechanism in an amount of 5–90 wt % of the substance, and a first alcohol in an amount of 0–10 wt % of the substance, and wherein the solvent comprises a second alcohol that is different from the first alcohol; and (f) filling the plurality of recesses of the second relief pattern(s) with the filling composition to provide a fluorescent information storage medium that encodes information.