New TDK Blu-ray Discs Achieve High-Speed 4x Recording — Community

#1 Nov 29, 2007 at 4:59 pm

TDK, a world leader in digital recording solutions, today announced the launch of two new write-once Blu-ray Discs capable of recording at 4x speed. TDK 4x 25GB BD-R Blu-ray Disc media and the 50GB version will both begin shipping later this summer. Retail pricing is set at $19.99 for a 4x 25GB BD-R25B (recordable), while pricing for the 4x 50GB BD-R50B (recordable) has not been finalized. A TDK 4x 25GB Blu-ray Disc can be fully recorded in 22 minutes, and a TDK 4x 50GB Blu-ray Disc can be fully recorded in 45 minutes, cutting the recording time in half in comparison to 2x Blu-ray Disc media. Additionally, TDK announced that it will offer business customers the world's first 50 piece spindles of 4x 25GB BD-R Blu-ray Disc media.

A pioneer of blue laser recording technology and founding member of the Blu-ray Disc Association, TDK began offering its highly anticipated 2x 25GB recordable and rewritable Blu-ray Disc media in the first quarter of 2006. TDK first shipped mass production samples in...

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#2 Dec 13, 2007 at 1:07 am

Previous write-once optical media such as CD-R and DVD-R utilized organic dye for their recording layers. Write-once type BD-R media is based on a completely new concept for the recording material wherein a two-layer structure composed of silicon (Si) and copper alloy (Cu) inorganic materials is utilized. When heated by the recording laser beam, these melt and the Si and Cu alloy become a composite to form recording marks. Because the material is inorganic, it is not affected by light, and offers superior archivability.

That is very interesting and very good news! A lot people are going to be in for a surprise when their old discs get past 5 years old