| 摘要 |
A disc cartridge in which disc cleaning can be made reliably despite prolonged use. The disc cartridge includes a disc-shaped recording medium 1, a main cartridge body unit 11 combined from a pair of cartridge halves 12, 13, a pair of liners 27, 28 for wiping off dust and dirt affixed to the disc-shaped recording medium 1, and plural sets of lifter units 15, 16, 17 comprised of paired rib-like protrusions 18, 21; 19, 22; 20, 23, formed as-one with the inner surfaces of the cartridge halves 12, 13 for uplifting the liners 27, 28 into pressure contact with the front and back sides of the disc-shaped recording medium 1. The plural sets of the lifter units are provided for extending along the direction of rotation of the disc-shaped recording medium. At least one of the rib-like protrusion 18, 20, 22 of the lifter units are designed as substantially comb-shaped rib-like protrusions combined from radial ribs 29, 31, 33 and circumferential ribs 30, 32, 34.
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