Method of manufacturing a matrix and a master plate suitable for use in the method.

摘要

The invention relates to a method of manufacturing a metal matrix suitable for use in the manufacture of optical discs, in which a master plate is used which comprises a recording double layer (2, 3) of a synthetic resin in which each layer comprises a laser light-absorbing dye, the master plate is exposed to modulated laser light (5) in which the laser light in both layers of the recording layer is absorbed and in which as a result of the exposure information bits are formed in the form of bumps (6) having variable longitudinal dimensions and the same width dimensions and the master plate on the side of the recording layer comprises a metal layer which is separated from the master plate, as well as a master plate which is suitable for use in the method described hereinbefore.