| 摘要 |
A recess is formed in a tray of a disc case. A peripheral wall portion of the recess is formed having disc supporting portions that support a disc in a manner such that the recording surface of the disc is floating. Spring elements are arranged along slots that are formed in the peripheral wall portion. Each spring element is formed having a protuberance and a guide surface. As the disc is inserted into the recess, the spring elements bend with their respective guide surfaces touched by an outer peripheral portion of the disc. The outer peripheral portion of the disc moves into the space inside the protuberances of the spring elements. When the disc is in the recess, the protuberances prevent the disc from slipping out of the recess.
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