Panasonic Corporation

Victor Company of Japan, Limited

Akira Yoshida

Shinichi Maeda

Teruyuki Naka

Shigeto Ueno

Masakazu Ishizuka

Isao Obata

Tomoshi Tokunaga

Yasuhiro Mori

Yasuo Kabuta

Takashi Saito

Yasuhiro Yamaguchi

Yasuo Haneji

Kazuo Okazaki

Takashi Tsurukubo

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

An optical disc apparatus has a first objective lens for a first optical disc such as a CD and a second objective lens for a second optical disc such as a DVD. The first and second objective lenses are mounted on a base that is transferrable in a direction of radii of the first and second optical discs coaxially installed in the optical disc apparatus. A first center of the first objective lens is located on a first line passing through a center of the first optical disc. On the other hand, a second center of the second objective lens is located on a second line orthogonal to the first line. The first and centers are separated from each other by a predetermined distance.

Optical disc apparatus for installing two types of optical discs

An optical disc drive apparatus includes a reference base. A turntable provided on the reference base operates for receiving an optical disc thereon. An optical pickup head supported by a guide shaft is movable along the guide shaft in a radial direction of the optical disc on the turntable. A movable base supports the guide shaft, and is movably connected to the reference base. The movable base is inclined relative to the reference base at an adjustable inclination angle. A mechanism operates for moving the movable base relative to the reference base and adjusting the inclination angle to correct a tilt of an optical axis of the optical pickup head with respect to an information recording surface of the optical disc on the turntable. A plurality of guide members fixed to the reference base have respective guide surfaces. Guide rollers connected to the guide shaft are in contact with the guide surfaces of the guide members respectively.

Optical disc drive apparatus with inclination angle correcting mechanism

Growing community of inventors

Zama, Japan

Akira Yoshida