Disc cartridge with liners uplifted by lifter units having comb

Details Disc cartridge with liners uplifted by lifter units having comb Disc cartridge with liners uplifted by lifter units having comb

1998-05-12

1999-10-19

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 2303

Patent

active

059699175

ABSTRACT:
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.

REFERENCES:
patent: 5587860 (1996-12-01), Umebayashi et al.
patent: 5619391 (1997-04-01), Getzoyan et al.
patent: 5631791 (1997-05-01), Osaki et al.
patent: 5633772 (1997-05-01), Ikeda et al.
patent: 5687048 (1997-11-01), Mizuta
patent: 5812351 (1998-09-01), Wulfing et al.
patent: 5831968 (1998-11-01), Tanaka

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