Label on laser entry side of an optical disc

摘要

An optical disc ( 3 ) for storing data is provided with a label material layer ( 8 ) on a laser entry side of the disc ( 3 ). The label material layer ( 8 ) does not impede reading data from or writing data onto the disc ( 3 ). Reflection or absorption of light in the visual spectrum by the label material in the label material layer ( 8 ) is affectable by illuminating the label material according to a label pattern. Changing the reflection or absorption results in a local change of color. The contrast that is herewith applied to the label material layer ( 8 ) can be used for creating visual information, such as text or images for forming a label. Furthermore a device ( 52 ) is provided for applying a label to the laser entry side of an optical disc ( 3 ). The device ( 52 ) comprises means for producing a laser beam ( 21 ) for illuminating the label material layer ( 8 ) according to a label pattern.