Patent ID: 6563672
Filing Date: 2003-05-13
Classification: G11B

Abstract:
A disk cartridge comprising:a cartridge main body constituted by upper and lower halves; a disk accommodation chamber formed in the cartridge main body; an information recording and/or reproducing disk rotatably accommodated in the disk accommodation chamber; a shutter that is disposed under the disk in the disk accommodation chamber, and circularly moved along the lower half, centering about a rotative pivot between an opening position and a closing position of at least one of a head insertion slot and a disk table insertion aperture of the cartridge main body; an opening and closing arm projected out of the disk accommodation chamber from a side surface of the shutter; and a shutter spring that is installed in the cartridge main body, and rotatably urges the shutter from the opening position toward the closing position through engagement with a synthetic resin spring shoe formed on the opening and closing arm in the vicinity of the distal end thereof by outsert molding; wherein a spring accommodation chamber is formed in the cartridge main body such that the spring accommodation chamber is located outside the disk accommodation chamber in the diametral direction of the disk and separated by a partition, and the shutter spring is accommodated in the spring accommodation chamber.