Patent ID: 6717907
Filing Date: 2004-04-06
Classification: G11B

Abstract:
A disc cartridge for housing a disc-shaped recording medium adapted for recording information signals thereon from a recording and/or reproducing apparatus, said disc-shaped recording medium being rotationally housed in a main cartridge body unit formed of an upper portion and a lower portion abutted and connected to each other, said disc cartridge comprising:a recording and/or reproducing opening provided in said main cartridge body unit for exposing a signal recording region of said disc-shaped recording medium at least across the inner and outer rims of the disc-shaped recording medium; a driving opening provided in said main cartridge unit for permitting intrusion of rotation driving means adapted for rotationally driving said disc-shaped recording medium; and a shutter mechanism including first and second shutter members for opening/closing said recording and/or reproducing opening, said first shutter member and said second shutter member being supported in a horizontally co-planar relationship within said main cartridge body unit, said first shutter member including a shutter portion for opening/closing said recording and/or reproducing opening, said first shutter portion having a side edge abutted against said second shutter member and an overlapping portion provided on the side edge for overlapping with a side of said second shutter member.