Panasonic Corporation

Victor Company of Japan, Limited

Tomoshi Tokunaga

Shinichi Maeda

Teruyuki Naka

Shigeto Ueno

Masakazu Ishizuka

Isao Obata

Akira Yoshida

Yasuo Kabuta

A disk drive includes a disk rotating unit, a traverse base holding the disk rotating unit, a damper member holding the traverse base, a main unit holding the traverse base through the damper member, a tray mounting a cartridge housing the disk, a driving unit that loads or ejects the tray and moves the disk in the cartridge relative to the disk rotating unit, and a traverse base holding member that is moved vertically by the driving unit relative to the main unit at the time of tray loading or tray ejection. The traverse base is held by the traverse base holding member through the damper member, and the resonance frequencies of the damper member in the radius direction of the disk as it is being loaded and in the direction of a rotation shaft are set higher than the maximum rotational frequency of the disk.

Disk drive with established resonance frequencies for damper member

A disk drive includes a cartridge holding mechanism which has a small size and reduces a damper load. The disk drive includes a spindle motor which mounts and rotates a disk. A traverse base holds the spindle motor, and a rubber damper flexibly holds the traverse base. A mechanical chassis holds the traverse base through the rubber damper, and a tray mounts a cartridge in which a disk is housed. A loading motor moves the disk in the cartridge close to the spindle motor or away from the spindle motor. The cartridge is supported by the mechanical chassis through the tray.

Disk loading apparatus with cartridge urging member operating cooperatively with disk rotating unit transverse holder

A disc apparatus for recording or reading data to or from a disc includes a tray having a table on which the disc is placed and a shielding member that covers the tray. The shielding member has a circular opening and a plurality of arc protruding members. Each arc protruding member is provided on an inner surface of the shielding member that covers the tray as protruding towards an upper surface of the disc placed on the table of the tray. An end of each arc protruding member is situated near the opening. Each arc protruding member has a protruding end with a height ranging from 1.0 mm to 1.5 mm from the inner surface of the shielding member.

Disc apparatus

A disc drive apparatus includes a tray member, on which a bare disc, or a cartridge accommodating a disc therein is placed, and a disc drive device, into or from which the tray member is loaded or ejected by a drive unit. A medium detection system includes detection holes provided on the tray member to detect a disc or a cartridge. In addition, provided on the disc drive device is a detection unit to optically detect a state including a type of a disc or a cartridge placed on the tray member based on whether the detection holes are shaded in the course of loading of the tray member.

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Zama, Japan

Tomoshi Tokunaga