| 摘要 |
<p>Provided is a disc adaptor wherein strain is not easily generated in a recording track of a disc and a tracking error is not generated. A disc adaptor is provided with an adaptor main body (1) formed in a ring shape; a first protrusion (30) formed on an inner circumference of the adaptor main body (1) for supporting one plane of a disc (2); a second protrusion (40) formed on the inner circumference of the adaptor main body (1) for supporting the other plane of the disc (2); a pressing section (20) formed on the inner circumference of the adaptor main body (1) and abuts on an outer circumference of the disc (2); and a hinge section (10) for permitting the pressing section (20) to have an elastic force. The disc (2) is held on the inner circumference side of the adaptor main body (1), and an elastic body which generates elastic deformation larger than that due to the hinge section (10) is used for the pressing section (20).</p> |
