Patent ID: 7512961
Filing Date: 2009-03-31
Classification: G11B

Abstract:
1. A disk cartridge comprising: a disk; a cartridge body housing the disk rotatably and having formed on a lower portion of the cartridge body a write and/read opening through which a part of the disk is exposed to outside; a shutter member supported movably on the lower portion of the cartridge body to uncover and cover the write and/or read opening; a first region and a second region formed on the lower portion of the cartridge body, the first region located across the write and/or read opening from the second region, where the second region is a region that is in contact with the shutter member when the shutter member is moved to a position which completely uncovers the write and/or read opening, and a first concavity is formed in the first region; a bent portion formed along one lateral side of the shutter member to close a gap resulting between the shutter member and the first concavity when the shutter member has moved to a position to cover the write and/or read opening; and a second concavity formed at a part of the first concavity, adjacent to the write and/or read opening and deeper than the first concavity.