When the disc spins for the first time the chemical agent moves and gets in contact with the reflective layer of the disc.After the preset time, the reflective layer becomes unreadable as the laser cannot reflect on the layer.
When the disc spins for the first time the chemical agent moves and gets in contact with the reflective layer of the disc. After approximately 48 hours, the reflective layer becomes unreadable as the laser cannot reflect on the layer.