TDK Life on Record Blu-ray Disc write-once and rewritable media features exclusive recording materials optimized for each disc type. The high-sensitivity inorganic recording material utilized by TDK for the write-once type Blu-ray Disc is completely different than the recording materials used for CD or DVD. Composed of copper and silicon, the recording material delivers remarkable, long-lasting performance. The recording material enables fast recording and playback speeds and also makes it possible to realize massive capacities through multi-layering.

A specially designed high-sensitivity phase change recording material is utilized for TDK rewritable Blu-ray Disc media. The material is so stable that a TDK Blu-ray Disc shows virtually no performance degradation, even after it has been overwritten 10,000 times.