Patent ID: 6480464
Filing Date: 2002-11-12
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:wherein the opening portion is closed such that the disk-shaped recording medium is shielded from outside by a shutter arranged at the disk cartridge 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, the shutter is moved and the opening portion is opened such that the recording and/or reproducing device can carry cut reproducing or recording operation from or to the disk-shaped recording medium; wherein a disk holder is arranged at the disk cartridge; wherein the disk holder is constituted by a structure capable of detaching from a disk cartridge main body; wherein the disk holder can be mounted to the disk cartridge main body along with the disk-shaped recording medium; wherein the disk holder is constituted by a structure capable of being detached to outside of the disk cartridge main body along with the disk-shaped recording medium; wherein the disk holder holds information in respect of the disk-shaped recording medium; wherein the disk cartridge main body includes an information holding portion holding the information in respect of the disk-shaped recording medium; wherein positions of an information holding portion holding the information of the disk-shaped recording medium of the disk holder and the information holding portion of the disk cartridge main body differ from each other when the disk holder is attached to the disk cartridge main body; and wherein the disk cartridge main body includes transmitting means for transmitting the information held by the disk holder to the information holding portion of the disk cartridge main body.