Optical disk mastering system

A process for making an optical disc master from which an optical disc stamper can be made comprising the steps of:

• forming a planar optical disc substrate having at least one surface for recording data;
• applying an optically active lamina to said recording surface of said optical disc substrate;
• recording data to said optically active lamina by focusing a data modulated laser to form a series of pits in said optically active lamina;
• illuminating said recorded active lamina with ultra violet radiation and thereby substantially eliminating any berm areas around said data pits.

In an optical disc mastering system that utilizes the process of:

• 1--forming a pregrooved, transparent disc substrate;
• 2--applying a lamina of semi-reflective substance to said disc substrate;
• 3--applying a lamina of an optically active dye polymer solution to said semi-reflective lamina;
• 4--recording data by modulated laser means passing through said transparent substrate and through said semi-reflective lamina to said active lamina to form data pits by ablation of active lamina;
• 5--radiating said recorded, active lamina to flatten and eliminate berm buildup prior to application of a conductive lamina;
• Wherein, the improvement comprises the deletion of the second step and increasing the laser absorption of the dye polymer solution in said third step.