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US 5,323,382 AGranted
Disc cartridge
AssigneeSony Corporation
InventorKenji Takahashi
Life of this patent
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AssigneeSony Corporation
InventorKenji Takahashi
Estimating the term…
A disc cartridge for an optical disc having a magnetic member attached to a central portion of one of two major surfaces of a disc substrate, wherein the cartridge includes a cartridge main body rotatably accommodating the optical disc, a recessed, inner surface portion for keeping a clearance between an inner surface of the cartridge main body and a protuberance produced by attaching the magnetic member to the one of the two major surfaces of the disc substrate, a first lug formed at a first position on the inner surface of the cartridge main body facing the magnetic member and a second lug formed at a second position on the inner surface of the cartridge main body facing the one of the major surfaces of the optical disc, wherein the height of the first lug is less than the height of the second lug, such that the first lug is contacted by the magnetic member when the disc substrate is loaded onto a disc table inserted into the disc cartridge. Recording/reproducing access apertures are formed in opposite positions of an upper cartridge half and a lower cartridge half making up the cartridge main body, and a reinforcement, including abutting projections and ribs, is provided at side edges of the recording/reproducing apertures located at an outer rim of an optical disc housed within the cartridge main body.
A disc cartridge including an optical disc having a magnetic member attached to a central portion of one of two major surfaces of a disc substrate, said cartridge comprising:
A disc cartridge comprising:
A product by process comprising a disc cartridge having a synthetic resin, injection molded cartridge half, the cartridge half being rectangular and having a first aperture at a center for insertion of disc rotating and driving means and a second recording/reproducing aperture at the midpoint of a distance between the center and a lateral side of the cartridge half, said cartridge half having a recessed shutter slide area on an outer major surface thereof which borders the lateral sides and in which a shutter member for closing said second aperture is slid, wherein the cartridge half is made by a process wherein a gate for injection molding of synthetic resin is provided at a position close to said first aperture and offset towards the lateral side of the cartridge half with respect to the center in the sliding direction of the shutter member.
A disc cartridge comprising:
Dependencies are inferred from the claim text.