Patent ID: 7263706

Claim:
A disk cartridge comprising: a case accommodating a disk and having an opening; a cover installed at on the case to be opened and shut, and having an edge portion defining a hole formed therein open to an outside of the cover; a shutter movably installed on the case between the disk and the case to open/shut the opening formed on the case; and a clamping member installed at on the cover to seal the hole and clamp the disk, wherein the disk cartridge is inserted into a disk drive having a turntable rotating the disk, and the clamping member comprises: a clamping holder contacting and supporting the edge portion of the hole of the cover; a magnetic body installed on the clamping holder to apply a magnetic attraction to the turntable of the disk drive; and a clamp cover sealing the hole and covering the clamping holder, and, wherein the shutter comprises: a protruding portion protruding from a major surface of the shutter to support a non-information area disposed on an outer circumference of the disk; and an inclined surface formed on the protrusion portion and inclined at a predetermined angle with respect to the disk so that, when the shutter is open, the disk is lowered along the inclined surface, and, when the shutter is closed, the disk is raised along the inclined surface to closely contact the cover.