Matsushita (Panasonic) Introduces Blu-ray Disc At CeBIT

The following four models will be introduced in Europe this spring:

• Rewritable, 50GB, Single-Sided, Dual Layer (LM-BE50DE)
• Rewritable, 25GB, Single-Sided, Single Layer (LM-BE25DE)
• Write once, 50GB, Single-Sided, Dual Layer (LM-BR50DE)
• Write once, 25GB, Single-Sided, Single Layer (LM-BR25DE)

Among the main features of Panasonic’s Blu-ray discs

Dual layer technology Achieves 50 GB Capacity

A new layer stack technology allowed Panasonic to stack two recording layers, an intermediate layer, and a transparent cover layer into a thickness of only 0.1 mm. A recording film technology with high sensitivity and high transmittance made it possible to achieve the dual-layer structure, and a high-precision forming technology ensured that the intermediate layer has a uniform thickness throughout. These technologies combine to produce a Panasonic BD disc that features two recording layers with a capacity of 50 GB.

Spin-coated cover layer

Panasonic BD discs also use an advanced spin coating process technology to form the cover layer with extremely uniform thickness. This is the key element for stable data recording.

A uniquely fabricated film for rewritable disc

An originally developed, highly sensitive and durable recording film used for rewritable discs further enhances the stable recording and playback characteristics, of particular importance for PC use where data is frequently rewritten.

An inorganic material film for write once disc

An inorganic material which is unaffected by light is utilized for a recording film of the write-once disc, which ensures safe and long-term storage of the data.

Hard-coated cover layer

Newly-developed surface-treatment technology enables a significant boost in disc resistance to scratches and abrasions, ensuring high reliability and durability even without a cartridge.