| 摘要 |
PURPOSE:To attain to provide additionally simple and sure medium protecting function by providing a write means possible for conversion into any of two state of write inhibition and permission to a disc onto a disc holder. CONSTITUTION:The disc 10 for recording and reproducing high density information is stored in a storage case comprising the holder 20 and the package 50. Further, the disc holder 20 is provided with a write means able to be converted into any of the two state; write inhibition and permission to a disc. Thus, the disc storage case provided additionally with the simple and sure medium protecting function is obtained in this way. |
