Inside Blu-ray Disc which does bulk data logging with the royal purplelaser whosewave length is short, just first one time those which can write in the data.It istheoptical disk whichhas the function which is similar to CD-R and DVD-R, but as for record capacity it is much many in comparison with those.

Presently, the productof the maximumrecord capacity 50GB which records in the product and single sided 2 layer of the maximum record capacity 25GB which records to only 1 layer of the disk one side is sold to BD-R. The case of entryrotary speed of the disk are those to 2 time speed. To do single sided 2 layer record and 2 time stenography record, it is necessary for disk drive to correspond to single sided 2 layer record and 2 time stenography record.

Technically BD-R of the maximum record capacity 100GB which used single sided 4 layer and BD-R of the maximum record capacity 200GB which used 8 layer are actualization possible, as many as entry rpm makes actualization possible to the maximum of 4 time speed. Merchandising after 2006 is anticipated. ... The continuation is read

Inthe Blu-ray Disc product in other things, at no degree BD-RE which can rewrite the data (Blu-ray Disc Rewritable) and there isread-only BD- ROM. Also the product wherethe cartridgetype where the disk is received to the cartridge is old exists in BD-RE, but BD-R is only non cartridge type.