| 摘要 |
A disk cartridge which allows the user to know what contents are recorded in which disk cartridge without the need for reproducing the disk cartridge, a method of manufacturing the same and a recording/reproducing system using the same have been provided, in which the disk cartridge is produced by incorporating an optical disk (100) in a case, a recording surface of the optical disk (100) is comprised of an annular inner area (111), a clamping area (112), a transition area (113), an information recording area (114) and a rim area (115), which are arranged from inside to outside in radial directions of the optical disk (100). Disk cartridge identification information is recorded in the transition area (113) of the optical disk (100), and also the disk cartridge identification information recorded in the optical disk is provided discernibly from outside the case. <IMAGE>
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