Magnetic disk cartridge
AssigneesFuji Photo Film Co., Ltd., Iomega Corporation
InventorKengo Oishi
Life of this patent
Estimating the term…
Abstract
A magnetic disk cartridge has a cassette shell formed of a pair of cassette shell halves encasing a rotatable magnetic disk supported by a center core, the inner surface of at least one cassette shell half lying parallel to the magnetic disk is formed with a recess which reduces the wall thickness of a portion of the cassette shell half, an elastic material is fixed on the cassette shell half to cover the recess, and a liner is attached to the surface of the elastic material facing the magnetic disk. The structure reduces the weight of the cassette shell and enhances its productivity and quality.
Claims3
A magnetic disk cartridge comprising:
- a magnetic disk,
- a center core supporting the center of the magnetic disk,
- a cassette shell encasing the magnetic disk to be rotatable therein and said cassette shell being formed in one side surface with a magnetic head access opening, the cassette shell including a first cassette shell half formed with an open portion through which the center core is exposed and a second cassette shell half mating with the first cassette shell half, wherein
- an inner surface of at least one of said first and second cassette shell halves lying parallel to the magnetic disk is formed with an annular recess which reduces a wall thickness of a portion of the at least one cassette shell half,
- an elastic material is fixed on the at least one cassette shell half to cover the annular recess, and
- a liner is attached to the surface of the elastic material facing the magnetic disk, wherein the elastic material comprises an elastic sheet, and wherein an outer periphery of the annular recess is formed with a step for supporting an edge portion of the elastic sheet.
A magnetic disk cartridge comprising:
- a magnetic disk,
- a center core supporting the center of the magnetic disk,
- a cassette shell encasing the magnetic disk to be rotatable therein and said cassette shell being formed in one side surface with a magnetic head access opening, the cassette shell including a first cassette shell half formed with an open portion through which the center core is exposed and a second cassette shell half mating with the first cassette shell half, wherein
- an inner surface of at least one of said first and second cassette shell halves lying parallel to the magnetic disk is formed with an annular recess which reduces a wall thickness of a portion of the at least one cassette shell half,
- an elastic material is fixed on the at least one cassette shell half to cover the annular recess, and
- a liner is attached to the surface of the elastic material facing the magnetic disk, wherein the elastic material comprises an elastic sheet, and wherein an outer peripheral portion of the elastic sheet is fixed to the at least one cassette shell, with a center portion of the elastic sheet protruding elastically toward the magnetic disk such that the elastic sheet has an arc-shaped cross-section.
Dependencies are inferred from the claim text.