Patent ID: 7028322
Filing Date: 2006-04-11
Classification: G11B

Abstract:
1. A disc cartridge comprising: a cartridge body including a disc storage portion, a chucking opening and a head opening, wherein the disc storage portion has a disc window and a bottom and stores a disc, having first and second sides, therein so that the disc is rotatable in the disc storage portion and that the first side of the disc is exposed through the disc window; the chucking opening is formed on the bottom of the disc storage portion so as to get the disc chucked externally; and the head opening is also formed on the bottom of the disc storage portion so as to allow a head, which reads and/or writes a signal from/on the second side of the disc, to access the second side of the disc; a shutter, which is supported, and movable with respect to the cartridge body, between the second side of the disc and the bottom of the disc storage portion so as to expose or cover the chucking and head openings; a disc holder, which is provided for the shutter, presses the disc against the shutter, and holds the disc thereon while the chucking and head openings are covered with the shutter; and a rim, which expands from a side surface of the disc storage portion toward the center of the disc and which contacts with an outer edge of the disc while the shutter is closed.