Classifying blank media

Blank media include:.CD, DVD, Minidisc and other laser-read disks .flash memory cards .magnetic tapes and disks .removable hard disks .micro drives .floppy disks, floppy disk cookie only and super floppy disks

CD, DVD, Minidisc and other laser-read disks :Classification of blank unrecorded disks can be complicated. Although all of these types of disk are read by laser systems, the recording (writing) systems differ. The disks fall into the following classes.

CD-R disks. These are unrecorded blank disks of 'Orange Book II' type that use laser technology for both reading and writing. Orange Book II is the second part of a standard developed by Sony and Phillips to define the construction of multisession CDs. CD-R disks are classified under subheading code 8523 40 11 10.


CD-RW disks. These use Phase-change technology for recording and erasing and are classified under subheading code 8523 40 19 00. Blank Minidiscs. These use magnetic optical technology for recording and erasing. They've got a magnetic layer and are rigid magnetic disks. Blank Minidiscs are classified under subheading code 8523 29 15 00.