TDK starts shipping "bare" type mass-production Blu-ray Disc samples

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TDK’s Blu-ray Discs achieve a high capacity of 25GB on a single-layer and 50GB on a dual-layer at 2x recording speed and are protected by TDK’s DURABIS 2 hard coating technology
TDK today announces that is has commenced shipping mass-production samples of its bare-type (cartridge-less) BD-R (write-once type) and BD-RE (rewritable type) Blu-ray Discs. The four new products include:

• BD-R25 (write once, single-side, single-layer, 25GB)

• BD-R50 (write once, single-side, dual-layer, 50GB)

• BD-RE25 (rewritable, single-side, single-layer, 25GB)

• BD-RE50 (rewritable, single-side, dual-layer, 50GB)

To ensure the new discs will be resistant to scratches and dirt even without external cartridges, they will be coated with TDK’s new DURABIS 2 hard coating. DURABIS 2 technology has been specifically formulated for Blu-ray Discs.

TDK's Chikumagawa Techno Factory, which specialises in optical discs, commenced mass production following the agreement of licensing for the bare disc by the Blu-ray Disc Association (BDA).

The main features of BD-R and BD-RE Blu-ray Discs include:

1. DURABIS 2 coating provides significantly greater resistance to scratches and dirt (particularly fingerprint smudges), ensuring safe use even without a cartridge.

2. Unique high-precision spin coating creates a supremely flat cover layer, resulting in highly stabilised recording and playback.

3. The BD-R disc utilises a recording layer of an inorganic material which is unaffected by exposure to light, thus offering outstanding archivability.

4. The BD-RE disc utilises a highly sensitive phase-change dye in the recording layer that realises stabilised characteristics even after as many as 10,000 rewrites.

5. High-precision stacking technology precisely overlays disc layers, delivering stabilised characteristics on both the upper and lower recording layers in a single-sided, dual-layer (50GB) disc.
 
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