Abstract: A disk conveyance unit 3 conveys the disk medium 2 to a position where recording and reproducing are performed by the pickup 1 with the spindle motor 4 held. The disk conveyance unit 3 includes first movement mechanisms 22 and 24 for moving a first conveyance frame 30 with respect to fixed frames 10 and 20 and second movement mechanisms 34 and 36 for moving a second conveyance frame 40 holding a spindle motor 4 with respect to the first conveyance frame 30. The first and second movement mechanisms move to substantially the same direction and operate independently from each other. This allows the disk of the hologram recording and reproducing apparatus to be moved at a high speed and positioned at a high accuracy.

Abstract: A disk conveyance mechanism for a hologram recording and reproducing apparatus includes a first conveyance mechanism for conveying a disk medium 2 to a position where a spindle motor 4 is situated with the disk medium 2 loaded onto a tray 6, a second conveyance mechanism in which the spindle motor 4 is held and moved in the rotational axis direction of the spindle motor 4 to take out the disk medium 2 from the tray 6 and load the disk medium 2 onto spindle motor 4, a third conveyance mechanism for conveying the disk medium 2 to the position where recording and reproducing are performed by the pickup 1 with the disk medium 2 loaded onto the spindle motor 4. The first and third conveyance mechanisms convey the disk medium 2 in a direction substantially parallel to the surface of the medium.

Abstract: A disk conveyance unit 3 conveys the disk medium 2 to a position where recording and reproducing are performed by the pickup 1 with the spindle motor 4 held. The disk conveyance unit 3 includes first movement mechanisms 22 and 24 for moving a first conveyance frame 30 with respect to fixed frames 10 and 20 and second movement mechanisms 34 and 36 for moving a second conveyance frame 40 holding a spindle motor 4 with respect to the first conveyance frame 30. The first and second movement mechanisms move to substantially the same direction and operate independently from each other. This allows the disk of the hologram recording and reproducing apparatus to be moved at a high speed and positioned at a high accuracy.

Abstract: An optical disc apparatus of the present invention is configured to include: a chassis which includes a supporting portion that supports an optical pickup, a pickup moving mechanism, and a disc motor, and coupling portions that are coupled to a tray at plural points, which is formed of a synthetic resin material, and in which the supporting portion and the coupling portions are integrated with each other; and a flexible flat cable which electrically couples between a first circuit substrate fixed to the bottom case side and a second circuit substrate fixed to the tray or the chassis side, and which is arranged between a bottom cover and a bottom case while its plane surface is folded in a state where the tray is inserted into an apparatus body.

Abstract: To prevent an optical disc from being removed from a clamper even when an impact force is applied in an optical disc apparatus. A displacement amount by which a disc motor is sunk on the bottom case side is suppressed. In more detail, a convex portion which protrudes in the bottom cover direction is provided at a region including the whole or a part of an orthographically-projected surface of the disc motor on a surface of a bottom case opposed to a rear surface of the disc motor, and in a state of recording or reproducing, the sum of a distance between a motor fixing plate and a bottom cover and a distance between the bottom cover and the convex portion of the bottom case is smaller in the rotational axis direction of the disc motor than the sum of a distance between an optical disc and a tray and an insertion depth by which a clamper is inserted into a center hole of an optical disc.

Abstract: In an optical disk apparatus, an ejection lock mechanism includes three (3) arm portions; i.e.

Abstract: In order to make a unit mechanical portion lighter and to cut down the cost of the unit mechanical portion in an optical disc apparatus, the optical disc apparatus of the present invention is configured to include: a chassis which includes a supporting portion that supports an optical pickup, a pickup moving mechanism, and a disc motor, and coupling portions that abut on and are coupled to a tray at plural points, which is formed of a synthetic resin material, and in which the supporting portion and the coupling portions are integrated with each other; and a flexible flat cable which electrically couples between a first circuit substrate fixed to the bottom case side and a second circuit substrate fixed to the tray or the chassis side, and which is arranged between a bottom cover and a bottom case while its plane surface is folded in a state where the tray is inserted into an apparatus body.

Abstract: To prevent an optical disc from being removed from a clamper even when an impact force is applied in an optical disc apparatus. A displacement amount by which a disc motor is sunk on the bottom case side is suppressed. In more detail, a convex portion which protrudes in the bottom cover direction is provided at a region including the whole or a part of an orthographically-projected surface of the disc motor on a surface of a bottom case opposed to a rear surface of the disc motor, and in a state of recording or reproducing, the sum of a distance between a motor fixing plate and a bottom cover and a distance between the bottom cover and the convex portion of the bottom case is smaller in the rotational axis direction of the disc motor than the sum of a distance between an optical disc and a tray and an insertion depth by which a clamper is inserted into a center hole of an optical disc.

Abstract: In an optical disk apparatus, an ejection lock mechanism includes three (3) arm portions; i.e.

Abstract: In the case when a disk is transported into or out of an apparatus, local contact noise is generated in a drive transmission gear and a clutch portion of a disk loading mechanism. Also, this phenomenon gives rise to problems relating to damage of parts, life of a loading motor and the like. Thus, a disk loading mechanism is provided to perform two operations of driving a disk tray in a disk transportation direction by means of a loading motor provided with a worm gear, via a first wheel gear and a second wheel gear, and also vertically raising and lowering a unit mechanism via a slide plate. In addition, a unit for controlling whirling of the above worm gear is provided to reduce contact noise of the gear and clutch portion and improve the reliability of a disk drive apparatus.