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The minimum speed at which a Blu-ray Disc can be written is 36 megabits (4.5 megabytes) per second. [4] As of 2024, one of the primary pioneers of the Blu-ray disc, Sony, is winding down production of recordable Blu-ray discs in its plant in Tagajo, Japan.
For example, many Maxell DVDs are made by Ritek or CMC magnetics. Many companies use equipment from Singulus Technologies. This list includes both CD, DVD and Blu-ray recordable and rewritable media manufacturers (like Ritek), and disc replicators (companies that replicate discs with pre-recorded content, like Sony DADC).
Note: Blu-ray disc recorders can record full high definition videos on BD-Rs and BD-REs. Disadvantages include: [citation needed] Slow initial access/load times due to the optical nature of the disc; Limited rewritability on DVD-RW/+RW discs (typically around 1000). DVD-RAM is better suited for high frequency re-recording (around 100,000 rewrites)
[3] [4] M-Disc claims that properly stored M-DISC DVD recordings will last up to 1000 years. [5] The M-DISC DVD looks like a standard disc, except it is almost transparent with later DVD and BD-R M-Disks having standard and inkjet printable labels. On the left is an M-disc written with information, on the right is an unwritten, blank M-disc.
DVD-RW represents a DVD "-" disc which can be read or written many times; BD-RE represents a Blu-ray disc which can be read or written many times. In addition some of these media support MultiLevel Recording formats, for example dual layer (written as "DL"), and DVD also supports a "RAM" version (similar to RW), although this is not widely used ...
The new discs were to overlay the Blu-ray and HD DVD layers, placing them respectively 0.1 millimetres (100 μm) and 0.5 millimetres (500 μm) beneath the surface. The Blu-ray top layer would act as a two-way mirror, reflecting just enough light for a Blu-ray reader to read and an HD DVD player to ignore. [18]