Abstract
An initialization-free method of producing blue-laser rewritable optical discs is proposed. After designing the disc, finding a suitable additional layer material and optimizing the film thickness of each layer, the initialization-free Blu-ray Disc was successfully fabricated. No obvious deterioration of writing/erasing properties was observed in the initialization-free Blu-ray Disc compared with a conventional Blu-ray Disc. Moreover, the initialization-free Blu-ray Disc is more suitable for highspeed recording.