| 摘要 |
<p>Disclosed is a disc cartridge capable of preventing a contact between an optical disc and the cartridge even when an environmental change occurs in a structure that an inner shell is provided in an interior of a shell unit. This disc cartridge includes a shell unit for accommodating an optical disc rotatably and in a shielded state, and an inner shell disposed in an interior of the shell unit and including a ring portion so protruded to an outer periphery as to form a space where the optical disc exists, wherein the inner shell is made of a metallic material or of a heat resistant plastic material of which a deflection temperature under load is equal to or higher than 135 DEG C so that the inner shell exhibits heat resistance and its deformation becomes small. <IMAGE></p> |
