Patent ID: 6926943

Claim:
Optical data carrier comprising a preferably transparent substrate, which has optionally already been coated with a reflection layer and to whose surface a light-writeable information layer, if desired a reflection layer and/or if desired a protective layer or a further substrate or a cover layer have been applied and which can be written and read by means of blue light, preferably laser light, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that the light-absorbent compound has an absorption maximum λ max1 of from 340 to 410 nm and the wavelength λ 1/2 , at which the absorbance on the long-wave edge of the absorption maximum of the wavelength λ max1 is half the absorbance value at λ max1 , and the wavelength λ 1/10 , at which the absorbance on the long-wave edge of the absorption maximum of the wavelength λ max1 is a tenth of the absorbance value at λ max1 , are both jointly in the range from 370 to 460 nm.