Patent ID: 7210156
Filing Date: 2007-04-24
Classification: G11B

Abstract:
1. A disk cartridge, comprising: a cartridge body including a lower shell having formed therein a first opening for write and/or read and an upper shell butt-joined to the lower shell; a rotation wheel housed rotatably in the cartridge body and which houses a disk and has formed therein a second opening corresponding to the first opening and through which the housed disk is exposed to outside, the rotation wheel including a control projection; and a shutter mechanism provided between the lower shell and rotation wheel and including a pair of shutter plates which are pivoted in conjunction with the rotation of the rotation wheel and which uncovers the first and second openings when the latter coincide with each other, one of said pair of shutter plates including a cam groove configured to receive the control projection of the rotation wheel, the rotation wheel having formed therein an engagement recess in which at least one of the shutter plates is engaged.