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US 5,090,010 AGranted
Disc cartridge
AssigneeKabushiki Kaisha Toshiba
InventorYoshinori Takahashi
Life of this patent
Estimating the term…
Abstract
A disc cartridge of the present invention has magnetic means provided on an inner surface at least one of a pair of housing means which faces information recording means and acting on a hub for fixing a magnetic disc so that the magnetic disc is prevented from being vibrated in the disc cartridge. In consequence, the present invention provides a disc cartridge which operates at a high reliability and in which foreign matter such as dust is not produced.
Claims14
A disc cartridge comprising:
- disc-shaped information recording means;
- driving force transmitting means, provided in a center of said information recording means, for rotating said information recording means when said driving force transmitting means is influenced by a driving force;
- means for housing said information recording means, said housing means comprising first and second portions, said first and second portions having inner surfaces adjacent to said information recording means, said first portion having an opening to expose said driving force transmitting means;
- means, provided on said inner surface of each of said first and second portions of said housing means, for removing dust from said information recording means;
- pressing means, provided only between said inner surface of said first portion of said housing means and said dust removing means on said first portion of said housing means, for applying a force in a direction from said first portion of said housing means toward said information recording means;
- and
- magnetic means for moving said information recording means in a direction towards said second portion.
4 more elements
A disc cartridge comprising:
- disc-shaped information recording means;
- driving force transmitting means, provided in a center of said information recording means, for rotating said information recording means when said driving force transmitting means is influenced by a driving force;
- means for housing said information recording means, said housing means comprising first and second portions, said first and second portions having inner surfaces adjacent to said information recording means, said first portion having an opening to expose said driving force transmitting means;
- means, provided on said inner surface of each of said first and second portions of said housing means, for removing dust from said information recording means;
- pressing means, provided only between said inner surface of said first portion of said housing means and said dust removing means on said first portion of said housing means, for applying a force in a direction from said first portion of said housing means toward said information recording means;
- and
- magnetic means for moving said information recording means in a direction towards said second portion, said magnetic means being mounted on said inner surface of said second portion of said housing means and comprising means for attracting said driving force transmitting means.
4 more elements
A disc cartridge comprising:
- disc-shaped information recording means;
- driving force transmitting means, provided in a center of said information recording means, for rotating said information recording means when said driving force transmitting means is influenced by a driving force;
- means for housing said information recording means, said housing means comprising first and second portions, said first and second portions having inner surfaces adjacent to said information recording means, said first portion having an opening, to expose said driving force transmitting means;
- means, provided on said inner surface of each of said first and second portions of said housing means, for removing dust from said information recording means;
- pressing means, provided only between said inner surface of said first portion of said housing means and said dust removing means on said first portion of said housing means, for applying a force in a direction from said first portion of said housing means toward said information recording means;
- magnetic means for moving said information recording means in a direction towards said second portion;
- and
- means for closing said opening when said magnetic means moves said information recording means towards said second portion, said closing means extending from said drive force transmitting means circumferentially along an edge portion of said opening.
5 more elements
A disc cartridge comprising:
- disc-shaped information recording means;
- driving force transmitting means, provided in a center of said information recording means, for rotating said information recording means when said driving force transmitting means is influenced by a driving force;
- means for housing said information recording means, said housing means comprising first and second portions, said first and second portions having inner surfaces adjacent to said information recording means, said first portion having an opening to expose said driving force transmitting means;
- means, provided on said inner surface of each of said first and second portions of said housing means, for removing dust from said information recording means;
- pressing means, provided only between said inner surface of said first portion of said housing means and said dust removing means on said first portion of said housing means, for applying a force in a direction from said first portion of said housing means toward said information recording means;
- magnetic means for moving said information recording means in a direction towards said second portion;
- and
- means for closing said opening when said magnetic means moves said information recording means towards said second portion, said closing means extending from said drive force transmitting means circumferentially along an edge portion of said openings and closing means comprising resin material,
- wherein said magnetic means provides an attracting force larger than a total weight of said information recording means, said driving force transmitting means and said closing means.
6 more elements
A disc cartridge comprising:
- disc-shaped information recording means;
- driving force transmitting means, provided in a center of said information recording means, for rotating said information recording means when said driving force transmitting means is influenced by a driving force;
- means for housing said information recording means, said housing means comprising first and second portions, said first and second portions having inner surfaces adjacent to said information recording means, said first portion having an opening to expose said driving force transmitting means;
- means, provided on said inner surface of each of said first and second portions of said housing means, for removing dust from said information recording means;
- pressing means, provided only between said inner surface of said first portion of said housing means and said dust removing means on said first portion of said housing means, for applying a force in a direction from said first portion of said housing means toward said information recording means;
- magnetic means for moving said information recording means in a direction towards said second portion, said magnetic means being mounted on said inner surface of said second portion of said housing means and comprising means for attracting said driving force transmitting means;
- and
- means for closing said opening when said magnetic means moves said information recording means towards said second portion, said closing means extending from said drive force transmitting means circumferentially along an edge portion of said opening.
5 more elements
A disc cartridge comprising:
- disc-shaped information recording means;
- driving force transmitting means, provided in a center of said information recording means, for rotating said information recording means when said driving force transmitting means is influenced by a driving force;
- means for housing said information recording means, said housing means comprising first and second portions, said first and second portions having inner surfaces adjacent to said information recording means, said first portion having an opening to expose said driving force transmitting means;
- means, provided on said inner surface of each of said first and second portions of said housing means, for removing dust from said information recording means;
- pressing means, provided only between said inner surface of said first portion of said housing means and said dust removing means on said first portion of said housing means, for applying a force in a direction from said first portion of said housing means toward said information recording means;
- magnetic means for moving said information recording means in a direction towards said second portion, said magnetic means being mounted on said inner surface of said first portion of said housing means and comprising means for repelling said driving force transmitting means;
- and
- means for closing said opening when said magnetic means moves said information recording means towards said second portion, said closing means extending from said drive force transmitting means circumferentially along an edge portion of said opening.
5 more elements
Dependencies are inferred from the claim text.