PROCESS FOR THE MANUFACTURE OF A MASTER DISK FOR THE PRODUCTION OF OPTICAL DISK PRESSING MATRICES BEARING A MARKING, PARTICULARLY OF THE ANTI-PIRATE TYPE, A MASTER DISK, A PRESSING MATRIX AND THE OPTICAL DISK OBTAINED

摘要

The invention concerns a manufacturing process for the creation of an optical disk pressing matrix bearing a marking, particularly of the anti-pirate type. This process consists of interposing, between the turntable (3) of an information recording machine and a support (1) coated with a photosensitive resin (2), a layer (7) formed by zones of different reflectivity at the wavelengths of the light beam (4) used to record the information, and thus creating a marking. The invention is suitable for application in particular in the area of production of optical disks bearing a marking.