Method for making optically readable media containing embossed information

A method of making an optically readable medium containing a relief information track comprising the sequential steps of

• (a) laminating a dry photohardenable film having a creep viscosity of 20-200 megapoise to a surface of a dimensionally stable optically transparent substrate;
• (b) optionally forming a reflective layer on the exposed surface of the dry photohardenable film;
• (c) embossing the surface of the dry photohardenable film opposite to that laminated to the surface of the substrate with the relief information track by applying to the surface of the photohardenable film opposite to that laminated to the substrate, at room temperature and under pressure, a stamper containing a relief image of the information track;
• (d) passing actinic radiation through the transparent substrate and the photohardenable film to effect hardening of the photohardenable film while it is in contact with the stamper;
• (e) separating the stamper from the resultant embossed surface of the photohardened film;
• and
• (f) forming an optically reflective layer on the embossed surface of the photohardened film, if such a reflective layer was not formed prior to step (c).