Organic recording layer-based BD-R supporting 2x speed recording
Organic recording layer-based BD-R supporting 2x speed recording
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Mitsubishi Kagaku Media Co. Ltd. and Pioneer Corp. have developed a recordable Blu-ray Disc (BD-R) using an organic dye recording layer. The companies aim to launch the disc onto the market at the end of 2007 or in the spring of 2008.

The companies developed a 25GB single-layer BD medium capable of up to 2x speed recording. Both recordable and rewritable BD media today use inorganic materials for recording layers.

However, by switching the inorganic materials with organic dye, manufacturing costs and material costs can be significantly reduced, the companies said. The Low to High recording format, which supports organic dye layer BD-R, is included in the Blu-ray Disc Recordable Format Ver. 1.2 specifications formulated in the spring of 2007.

On the other hand, BD's rival HD DVD already saw an organic dye-based, dual-layer recordable disc commercialized in July 2006. The organic BD-R will emerge on the market about one and a half years behind HD DVD.

Mitsubishi Kagaku Media and Pioneer announced the development of another BD-R medium that has two or more layers and achieves 4x or faster recording using metal nitride recording layers along with the 2x speed recording BD-R. The companies, however, did not reveal details of the technology. These technology developments will be presented at CEATEC Japan 2007, which is slated to open Oct. 2, 2007.