Magnetic disk cartridge

Details Magnetic disk cartridge Magnetic disk cartridge

1987-09-25

1988-12-06

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 23033

Patent

active

047899166

ABSTRACT:
A magnetic disk cartridge comprises a disk case, a magnetic disk rotatably disposed in the disk case, and liner members secured to inner surfaces of the disk case to face circular surfaces of the magnetic disk so that the liner members rotatably support the magnetic disk. A concentric rib and an eccentric rib are formed at least on the inner surface of the disk case facing the circular surface of the magnetic disk on the magnetic recording side. The concentric rib is constituted by a ring-shaped protrusion facing at least either one of an inner circumference and an outer circumference of the circular surface of the magnetic disk. The eccentric rib is constituted by a ring-shaped protrusion eccentric with respect to the center of rotation of the magnetic disk and passing through positions facing the vicinity of the outer circumference and the vicinity of the inner circumference of the circular surface of the magnetic disk.

REFERENCES:
patent: 4626949 (1986-12-01), Brock et al.
patent: 4630728 (1986-12-01), Matsumoto et al.
patent: 4677517 (1987-06-01), Gelardi et al.
patent: 4737876 (1988-04-01), Brock et al.
patent: 4739433 (1988-04-01), Dishi

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