The perfect solution for high-capacity media for back-up and archival.

Overview

To attain superb storage quality with low error rates, recording with the proper laser power is essential. The recording power of the laser, however, can be attenuated by such causes as fine dust particles that build up on the lens surface. This results in poorer recording signal quality and more errors, and, in the worst cases, the data cannot be read at all. The high performance recording layer used in Fujifilm’s BD-R/RE discs ensures wide power margins. This means you can make accurate recording even from a weaker laser.

Superior hard-coat layer protects your stored data.

Because of new hard-coating technologies, the Blu-ray disc was standardized without a cartridge prior to its full-scale was standardized without a cartridge prior to its full-scale rollout. Fujifilm’s original hard-coating technology used in its BD-R/RE discs helps realize excellent playability.

Blu-ray format concept and disc structure

The concept behind Blu-ray format is to be able to record a two-hour high-definition (HD) broadcast on a single-sided, single layer disc. HD video contains about six times the number of pixel of standard-definition (SD) video. A disc capacity of about 22 GB is needed to store this amount of HD video. Both the BD-R and the BD-RE formats have a standard capacity of 25 GB to ensure they can hold two hours worth of HD programming. Since Blu-ray discs are optical discs with the same 120-mm diameter as DVDs, they require about 5.3 times the recording density. To attain higher density storage Blu-ray must have the ability to record at extremely small spot diameters compared with DVDs. This is why a blue-violet laser with a wavelength of 405 nm is employed to record and play back Blu-ray discs. This laser – together with enlarging the pick-up lens’s numerical aperture to 0.85 and shortening the optical path length to the light convergence point to just 0.1 mm – is what enables Blu-ray to reduce the spot diameter to about 19% of that of DVDs. Blu ray uses a different disc structure from DVDs to achieve the shorter optical path length.

Transfer rates and recording speeds

The transfer rate of a Blu-ray disc at the 1x recording speed is 36 Mbps, which is more than sufficient to handle the maximum HD broadcast rate of 24 Mbps. Fujifilm’s BD-R/RE discs support 1x and 2x recording speeds, which means they can reach a maximum transfer rate of 72 Mbps.(This is equivalent to a 7.2 x recording speed for a DVD).

Specifications