Data storage medium and method for the preparation thereof

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

Reexamination Certificate

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C430S945000, C428S064400, C428S064700

Reexamination Certificate

active

10638145

ABSTRACT:
A data storage medium includes a substrate, a reflective metal layer, and a haze-prevention layer between the substrate and the reflective metal layer. The substrate includes an amorphous thermoplastic resin having a heat distortion temperature of at least about 140° C., a density less than 1.7 grams per milliliter, and an organic volatiles content less than 1,000 parts per million measured according to ASTM D4526. The haze-prevention layer includes a material having a volume resistivity of at least 1×10−4ohm-centimeters and a tensile modulus of at least about 3×105pounds per square inch. The data storage medium resists hazing of the reflective layer at elevated temperatures.

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