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US 7,055,163 B2Granted
Disc cartridge and disc drive
AssigneeSharp Kabushiki Kaisha
InventorsAkira Takahashi, Hideharu Tajima, Nobuyuki Takamori
Life of this patent
Estimating the term…
Abstract
A disc cartridge of the present invention has an arrangement in which a disc cover is provided so as to cover one side of a disc in a disc shape having a recording layer for recording/reproducing information. This arrangement protects a surface for recording/reproducing from being damaged, being attached by dust, or being dirty. Meanwhile, this arrangement gives a significantly thinner thickness to the disc cartridge.
Claims44
A disc cartridge, comprising:
- a disc in a disc shape, including a recording layer for recording/reproducing information;
- a disc cover for covering at least a surface for recording/reproducing, which is accessed by a head for recording/reproducing information with respect to the disc;
- and
- connecting means for connecting the disc and the disc cover,
- wherein a side of the disc, which is opposite to the side of the disc covered by the disc cover, is exposed externally,
- the disc has a disc projected section in an inner circumference part of the disc, the disc projected section being projected toward the disc cover,
- the connecting means is a movable projecting section provided on the disc cover, and one end of the movable projecting section is inserted in or pulled out with respect to a recessed section provided on a side wall of the disc projected section, and
- when the one end of the movable projecting section goes into the recessed section, an opposite end of the movable projecting section is hooked and stopped by a recessed hooked section inside the disc cover.
5 more elements
A disc cartridge, comprising:
- a disc in a disc shape, including a recording layer for recording/reproducing information;
- a disc cover for covering at least a surface for recording/reproducing, which is accessed by a head for recording/reproducing information with respect to the disc;
- connecting means for connecting the disc and the disc cover;
- and
- a disc holding lock, provided on the disc cover, for mechanically holding an outer circumference part of the disc,
- wherein a side of the disc, which is opposite to the side of the disc covered by the disc cover, is exposed externally, and
- one end of the disc holding lock is for holding the disc, and the other end thereof moves to switch over whether the one end of the disc holding lock holds or stops holding the disc, wherein when the disc holding lock is positioned to hold the disc, a projecting section for unlocking the disc holding lock is projected into a ditch provided on a side wall of the disc cover.
4 more elements
Dependencies are inferred from the claim text.