Abstract: A molded component includes: a primary molded layer including a boxlike base portion that has a width direction in a first direction, a length direction in a second direction, and a height direction in a third direction and includes a first surface protruding in the third direction and a second surface that forms a spatial portion on the other side of the first surface, and a pedestal portion protruding outwardly in parallel to the first direction and the second direction from a circumferential edge of the base portion; a secondary molded layer formed of an optically-transparent resin material, that is laminated on the primary molded layer and has the same width and length as the primary molded layer; and an in-mold layer formed between the primary molded layer and the secondary molded layer.

Abstract: A molded component includes: a primary molded layer including a boxlike base portion that has a width direction in a first direction, a length direction in a second direction, and a height direction in a third direction and includes a first surface protruding in the third direction and a second surface that forms a spatial portion on the other side of the first surface, and a pedestal portion protruding outwardly in parallel to the first direction and the second direction from a circumferential edge of the base portion; a secondary molded layer formed of an optically-transparent resin material, that is laminated on the primary molded layer and has the same width and length as the primary molded layer; and an in-mold layer formed between the primary molded layer and the secondary molded layer.

Abstract: A prosthesis-fixing structure includes an abutment embedded in a dental root and having a first groove formed on the external surface thereof; a prosthesis having an interlocking section with a second groove formed along an internal surface on a position corresponding to the first groove; and a C-ring fitting to the first and second grooves and supporting the prosthesis to the abutment in a removable state.

Abstract: In a small size image pickup apparatus, depending upon the opening direction of the lid, a hand strap and the like become obstacles and it becomes difficult to open a disc lid with a large angle. Hence, a disc-like recording medium cannot be attached to and detached from the disc type image pickup apparatus without difficulty.

Abstract: An optical pickup device capable of irradiating laser beams on a signal recording surface of magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.

Abstract: A disk cartridge can be stably loaded on a cartridge compartment without impairing the external appearance of the disk cartridge and without increasing the size of the compartment more than needed. A cartridge housing has cutout recesses (gripper slots) in the side face thereof. In these cutout recesses are provided cartridge holding recesses. When the cartridge is loaded in the cartridge compartment of the disk driving device, the cartridge holding claws provided on the cartridge loading section of the cartridge compartment are engaged with the recesses, thereby stably holding the cartridge on the compartment. The cartridge holding claws may be provided on the cartridge compartment so as not to protrude out of the cutout recesses when viewed from above, whereby an increase in the size of the cartridge compartment more than needed can be prevented.

Abstract: A recording and reproducing apparatus having a holder for holding an inserted cartridge with a recording medium stored therein in which a recording medium is loaded or unloaded at the recording and reproducing position for recording and/or reproducing information as the holder is elevated or lowered, including a driver on which the recording medium rests at the recording and reproducing position and driving the recording medium for recording and/or reproduction and an elevator having an elevating and lowering operation cam formed on its side portion and elevating or lowering the holder when it is slid in parallel to the direction in which the cartridge is inserted.

Abstract: An optical pickup device capable of irradiating laser beams on a signal recording surface of a magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.

Abstract: A recording and reproducing apparatus having a holder for holding an inserted cartridge with a recording medium stored therein in which a recording medium is loaded or unloaded at the recording and reproducing position for recording and/or reproducing information as the holder is elevated or lowered, including a drive portion on which the recording medium rests at the recording and reproducing position and driving the recording medium for recording and/or reproduction and an elevating portion having an elevating and lowering operation cam formed on its side portion and elevating or lowering the holder when it is slid in parallel to the direction in which the cartridge is inserted.

Abstract: A disk cartridge is provided for storing a recording disk in a space formed by fastening an upper half and a lower half. At least either the upper half or the lower half has a pair of groove portions defined on its right and left side surfaces from the front end to the central portion direction so as to oppose a mis-insertion preventing protrusion portion formed on a disk drive. Engagement concave portions which are engaged and held by the holding member disposed within the disk drive when the disk cartridge is loaded into the disk drive are provided on the inner surfaces of the groove portions.

Abstract: An optical pickup device capable of irradiating laser beams on a signal recording surface of a magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.

Abstract: An optical disk is equipped with a hub which is very easy to attach and detach. The hub has a bottom and a cylindrical wall which projects upwards from the bottom, and which is inserted in the center hole of the optical disk. The cylindrical wall of the hub is slotted so that the upper end of the cylindrical wall can be bent radially inwards to a smaller diameter allowing removal of the hub from the optical disk. The hub further has stoppers, formed at or near the bottom, for abutting the lower surface of the optical disk, and claws formed at or near the upper end of the cylindrical wall, for abutting on the upper surface of the optical disk.

Abstract: An optical disk device is adapted so that an air-cooling fan for cooling is attached to the back side of the optical disk device body unit. Further, in this optical disk device, a control board is disposed or arranged at the back side of the air-cooling fan so that it is integral with the optical disk device body unit to thereby cool heat produced in the optical disk device by blast of the cooling fan to allow the ambient temperature to fall within a specification limit, thus to facilitate the optical disk device to be included in a computer, etc.

Abstract: A disc cartridge having a cartridge body accommodating therein a record medium so that the record medium can be recorded and/or reproduced in the accommodated state, a first identifying device movably provided in the cartridge body so as to be switched from the outside so that it can close partly or wholly a rectangular window aperture formed through the cartridge body, and a second identifying device provided in the cartridge body in a half-secured condition so as to close a part of another rectangular window aperture formed through the cartridge body and which cannot be switched from the outside, wherein the first and second identifing devices indicate the kind of optical disc and data necessary for recording on and/or reproducing from the optical disc incorporated.