Optical data medium containing; in the information layer, a dye as a light-absorbing compound

摘要

Optical data medium containing in the information layer, a dye as a light-absorbing compound Abstract optical data medium containing a preferably transparent substrate which is optionally already coated with one or more barrier layers and on the surface of which an information layer which can be recorded on using light, optionally one or more barrier layers, and a cover layer containing a radiation-cured resin, have been applied, which data medium can he recorded on and read using focused blue light through the cover layer on the information layer, preferably laser light with the wavelength between 360 nm and 460 nm, the information layer containing a light-absorbing characterized in that at least one dye is used as the light-absorbing compound wherein the cover layer dies have a total thickness of 10 mum 177 m and the numerical aperture NA of the focusing objective lens setup is greater or equal 0.8.