Patent ID: 6349087
Filing Date: 2002-02-19
Classification: G11B

Abstract:
A disk cartridge incorporating a disk-shaped recording medium and having an opening portion for carrying out recording and/or reproducing operation by a recording and/or reproducing device, comprising:a disk cartridge main body; a disk holder which is detachably mountable to said disk cartridge main body; wherein said opening of the disk cartridge is provided in said disk cartridge main body; wherein said opening portion is closed by a shutter arranged at said disk cartridge main body such that said disk-shaped recording medium is shielded from outside by said shutter when the disk cartridge is outside of the recording and/or reproducing device; wherein when the disk cartridge is inside of the recording and/or reproducing device, said shutter is moved and said opening portion is opened such that the recording and/or reproducing device can carry out reproducing or recording operation from or to said disk-shaped recording medium; and wherein said disk holder includes a disk holding member holding said disk-shaped recording medium so that when said disk holder is mounted to said disk cartridge main body, said disk holding member releases holding of said disk-shaped recording medium, and when said disk holder is detached from said disk cartridge main body, said disk holding member holds said disk-shaped recording medium and said disk holder is detachable from said disk cartridge main body along with said disk-shaped recording medium; and wherein disk holding member regulating portions are installed in said disk cartridge main body and when said disk holder is mounted to said disk cartridge main body, said disk holding member is brought into contact with said disk holding member regulating portions and is elastically deformed so that said disk holding member releases holding of said disk-shaped recording medium.