Toshiba and Clariant collaborate on 30GB recordable HD-DVD

In addition to developing the dye, which is used on each recording layer, the two companies also produced prototype dual-layer discs and verified that they work, said Junko Furuta, a spokesperson for Toshiba in Tokyo.

At present, the highest capacity HD-DVD-R discs that have been standardized are single-layer 15GB discs. The two companies have already proposed the dual-layer disc to the DVD Forum standards body with the hope that approval will come by the end of this year, Furuta said.