The Panasonic BD-R disc uses a new inorganic phase-change recording material that gives fast 4x recording speeds (up to 144 Mbps), the equivalent of approx. 12x recording of a DVD.
This makes it ideal for applications that involve large amounts of data, such as storing high definition video or backing up your hard drive.
•Maximum transfer speed for DVDs ( normal speed ) is 11.08Mbps.

Single-sided dual-layer technology from Panasonic provides stable recording characteristics with a large 50GB* storage capacity.

High-precision layer stack technology is used to stack two recording layers, an intermediate layer, and a transparent cover layer into a thickness of only 0.1 mm to achieve dual layer structure with 50GB* capacity.

Advanced spin coating process technology forms the cover layer and intermediate layer with extremely uniform thickness to ensure stable data recording.

Wide power margin and ultra-low error rates Maintaining a wide power margin at all recording speeds between 1x and 6x.

To realize high-speed recording, Panasonic has employed new proprietary technology in metal molds and the cover layer forming process, as well as high-precision stamping technology.
This translates to a disc with a high degree of surface flatness, and less susceptibility to warpage caused by sudden changes in temperature or humidity. In addition, the recording surface has been equipped with precision signal grooves.
These innovations combine to achieve unsurpassed servo characteristics that enable stable recording and playback performance, even at the maximum 6x speed.

The Panasonic disc features a unique dual protective layer ( for both the L0 and L1 recording layers on a single-sided dual-layer disc ) so that the disc's recording layers are protected from both sides.
Coupled with the scratch-resistant Hard Coating layer, this feature offers powerful protection for the disc's recording layers. These strong protective layers provide durability that withstands over one million continuous uses and a minimum of 50 years** of storage.
**Based on testing and storage at 25 °C and a relative humidity of 50%.

The panasonic BD-R disc uses a new inorganic phase-change recording material that provides superb sensitivity for high-speed recording as well as excellent durability, making it highly resistant to damage from repeated playback and exposure to sunlight. The disc also makes a highly reliable medium for long-term data storage of more than 50years.

When the disc surface becomes scratched, it scatters the laser beam during recording and playback, causing the number of writing and reading errors to increase. Our newly developed hard coating prevents the scratching that leads to such problems.

* The capacity of Blu-ray discs is expressed in units of 1 GB=1 billion bytes, but the capacity is slightly below that after formatting, so that the actual amount area that can be used will be less.