US Patent 7657903 Disc cartridge

A disc cartridge is provided. The disc cartridge includes: a lower housing having a window for allowing a recorder or reader to access to a read-out surface of a disc; and an upper housing coupled to the lower housing to ejectably receive the disc between the lower housing and the upper housing, and having at least a portion rotatable up and down with respect to one side of the lower housing until the disc can be ejected.