Pre-recorded compact disc and copy-limit method thereof
Pre-recording type optical recording medium with surface...
Preformatted information medium and optical reader device
Pregrooved optical-disk
Pressurized disk drive interior for air cooling and dust prevent
Process and system for optical recording and reading on a mobile
Process for producing a low hygroscopic methacrylic resin and in
Process for producing stamper of multi-valued ROM disc,...
Process for recording and/or reproducing digital data on a recor
Producing system and corresponding information recording...
Protected optical disk of welded construction
Protected optical disk with a free layer holder
Protected recording medium
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
Protective cover for optically read digital disks
Protective divider and enclosure disc assembly for laser...