公开(公告)号：US4724962A

公开(公告)日：1988-02-16

申请号：US928581

申请日：1986-11-13

申请人： Seizo Watanabe ,  Kazuyasu Motoyama ,  Youichi Hosaka

发明人： Seizo Watanabe ,  Kazuyasu Motoyama ,  Youichi Hosaka

IPC分类号： G11B23/03 ,  G11B23/02

CPC分类号： G11B23/0321

摘要： A disc jacket, especially for a photo-magnetic disk which records, reproduces and erases information, has a single opening configured to receive both a recording head and a central spindle. The opening extends along the whole radius of the disk to enable effective use of a larger area of the disc. The opening is opened and closed by a pair of shutter blades which automatically open when the disk jacket is inserted in an information recording and reproducing apparatus.

摘要翻译： 特别是用于记录，再现和擦除信息的光磁盘的光盘外套具有被配置为接收记录头和中心主轴两者的单个开口。 开口沿盘的整个半径延伸，以有效利用盘的较大面积。 开口由一对快门叶片打开和关闭，当盘套被插入到信息记录和再现装置中时，该快门叶片自动打开。