Optical disk with snap-fit magnetized hub
Optical information recording disc and apparatus for driving the
Optical information recording disk
Optical information recording medium having a protective film wh
Optical memory and information processing apparatus
Optical memory cartridge and drive apparatus
Optical memory disc
Optical recordable disk security system
Optical recording medium and disc cartridge having 2 GB...
Optical recording medium having a recording/reproducing area...
Optical tape cartridge having improved tape movement mechanism
Plastic clamp with hub and platter for use in disc drive
Plastic clamp with hub and platter for use in disc drive
Plastic hub containing a magnetic material and method of its man
Position controlling mechanism for a disc cartridge
Protective cartridge for optical discs
Protective cartridge for rewritable optical disk
Protective cartridge for rewritable optical disk
Protective cover for an optical disc
Protective cover for an optical disc