Patent ID: 6111726
Filing Date: 2000-08-29
Classification: G11B

Abstract:
A removable data storage cartridge comprising:data storage media comprising a circular disk;a shutter assembly enclosing a portion of the media, the media mounted for rotation within the shutter assembly about an axis of rotation;a shutter window in the shutter assembly exposing an arc of less than 180 degrees of the outer circumference of the media;a cartridge housing enclosing at least a portion of the shutter assembly and the media; the shutter assembly mounted for rotation within the cartridge housing about the axis of rotation;a retaining ring within the cartridge housing, the retaining ring encircling more than half of the circumference of the shutter assembly, the shutter assembly mounted for rotation about the axis of rotation within the retaining ring; anda cartridge window in the cartridge housing;wherein the shutter assembly and cartridge housing are movable between an open position in which the shutter window is generally aligned with the cartridge window to expose a portion of the media and a closed position in which the media is generally enclosed within the shutter assembly and the cartridge housing.