IRREVERSIBLE OPTICAL RECORDING MEDIUM COMPRISING A TRACK WITH LOW RAISED ZONES AND METHOD FOR USING SAME

摘要

The medium has a substrate (1) with a photosensitive layer (2) having a front side receiving optical radiations. Relief zones (1c) have height comprised between 25 nm and 35 nm for widths of the zones comprises between 250 nm and 370 nm, and another height comprised between a minimum value varying linearly between 25 and 32 nm and a maximum value of 35 nm for widths of the zones comprised between 200 and 250 nm. An independent claim is also included for a method for using a irreversible optical recording medium.