Lightscribe technology Sample - The surface of a LightScribe disc is coated with a reactive dye that changes color when it absorbs 780nm infrared laser light. The etched label will show no noticeable fading under exposure to indoor lighting for at least 9 months. Optical media should always be stored in a protective sleeve or case that keeps the data content in the dark and safe from scratches. If properly stored as such, the label should show no noticeable change for much longer than 9 months in real-world application. LightScribe labels burn in concentric circles, moving outward from the center of the disc. Images with the largest diameters will take longest to burn. Currently LightScribe is monochromatic, a grey etch on a gold looking surface. From late 2006, Lightscribe discs are also available in colours for categorisation. The 'burning' is still monochromatic, but the background colours can now be produced in various colours, under the v1.2 specification. In time, the intention is to advance to full colour burning on a plain background. The center of every Lightscribe disk has a special code that allows the drive to know the precise rotational position of the disc. This in combination with the drive hardware allows it to know the precise position from the center outwards, and the disc can be labelled while spinning at high speed using these references. It also serves a secondary purpose: The same disc can be labelled with the same label again, several times. Each successive labelling will darken the blacks and generally produce a better image, and the successive burns will line up perfectly.