TDK has something pretty interesting in store for next week’s CEATEC 2009 electronics exhibition in Japan. The company plans to showcase a write-once optical disc that boasts a capacity of 320GB distributed over ten layers holding 32GB each (as opposed to a Blu-ray disc that can store up to 25GB per layer).
The company achieved to develop a disc storing 200GB back in 2006. The transmittance level of the outermost layer of the new disc stands at more than 90%, as opposed to the 2006 version’s 80-90%. This translates back to better signals on each layer (the higher the number of recording layers, the weaker the signals get and the more urgent the need for good transmittance).