According to Digitimes Infomedia introduced a single-sided double-layer (also called dual-layer) DVD+R disc, with volume production to begin in May this year. The company claims to be the first to show this type of disc in Taiwan.
Infomedia began development of the new disc model after Philips, the leader of the DVD+RW (burner) alliance, announced its single-sided double-layer DVD+R recording technology (edition 0.9) late last year. The company has cooperated in the development with suppliers of dye and coating materials including Zeon Chemicals, Sony, Mitsubishi Chemical, GE and Formosa Plastics.
The new DVD+R disc has a storage capacity of 8.5GB, much larger than the 4.7GB of single-sided, single-layer DVD+Rs available currently, Infomedia pointed out. Philips plans to announce its edition 1.0 specification for single-sided double-layer DVD+R discs in May and then DVD players/burners supporting the discs are expected to become available, Infomedia indicated.
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although this article doesnt go into detail on the specs of the disks and the price at which they will be offered, i think its a start.
Hopefully this means that we'll have double layer DVD+R discs by the time double layer DVD+R burners come out.
i think philips is going to include a dual layer disc with the burners.