Disc cartridge with mode selecting means
Disc cartridge with opening detector
Disc cartridge with removal protector member
Disc cartridge with shutter/slider/spring engagement portions
Disc cartridge with slidably mounted shutter
Disc cartridge with slide shutter having catch pieces
Disc case
Disc case
Disc case
Disc case
Disc case
Disc case for removably housing data discs
Disc case with dust shield members
Disc cassette
Disc cassette
Disc device having a magnetic layer overweighing the information
Disc for recording information signals
Disc having grooves and pits with different depths, and...
Disc magazine
Disc media and methods for fabricating