Patent ID: 6296115
Filing Date: 2001-10-02
Classification: G11B

Abstract:
A case for containing disk type recording medium provided with a center bore and a recording part, said case comprising a cartridge adapted to contain said disk type recording medium and including an opening through which at least a portion of said recording part of said disk type recording medium is exposed, and a protective case detachably mounted on said cartridge and adapted to cover said opening when mounted on said cartridge,said cartridge consisting ofa first case member adapted to cover one surface of said disk type recording medium and including a center opening through which said center bore of said disk type recording medium and an adjacent area around said center bore are adapted to be exposed, and a first annular projection formed around said center opening and projecting toward said disk type recording medium, anda second case member adapted to cover the other surface of said disk type recording medium and including a center opening through which said center bore of said disk type recording medium and an adjacent area around said center bore are adapted to be exposed,said protective case including a second annular projection which enters into said center opening of said second case member to come into contact with said adjacent area around said center bore of said disk type recording medium.