公开(公告)号：US07146625B2

公开(公告)日：2006-12-05

申请号：US10392398

申请日：2003-03-20

申请人： Jae-yong Eum ,  Yong-hoon Lee ,  Hong-kyun Yim ,  Chong-sam Chung ,  Han-kook Choi ,  Takizawa Teruyuki ,  Saji Yoshito ,  Okazawa Hironori

发明人： Jae-yong Eum ,  Yong-hoon Lee ,  Hong-kyun Yim ,  Chong-sam Chung ,  Han-kook Choi ,  Takizawa Teruyuki ,  Saji Yoshito ,  Okazawa Hironori

IPC分类号： G11B3/70 ,  G11B5/84

CPC分类号： G11B23/0317 ,  G11B23/0308 ,  G11B23/0313

摘要： A disc cartridge includes a case accommodating a disc and having an aperture hole formed on a first surface of the case so that a recording/reproducing apparatus access a recording surface of the disc, and an open hole formed on a second surface to be open to an outside of the case, a shutter opening/shutting the aperture hole and installed in the case, a disc holder installed at a side defining the open hole to move up and down and covering a gap between an outer circumference of the disc and an inner surface of the side defining the open hole when the disc holder descends, and a shutter driving mechanism moving the shutter so that the aperture hole is open/shut. Thus, a passage through which dust is introduced toward an information area of the disc, and a gap formed at an outer circumference are blocked by the disc holder so that a possibility of contamination by dust can be reduced.