Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Tomio Yamamoto

Akira Kurozuka

Eiichi Hanakawa

Hitoshi Minabe

Hideto Soga

Hideharu Tajima

Minoru Shimizu

Taisuke Saeki

Ryo Matsubara

Yasuyuki Torii

Takatoshi Yukimasa

Asayuki Matsumura

Shunsuke Nirei

Naohiro Netsu

Nobuyuki Takamori

Akira Kurotsuka

Hideki Aikoh

Takao Hayashi

Akira Yoshikawa

Kiyoshi Uchida

Akihiko Nishioka

Masahiro Inagaki

Makoto Takashima

Tadashi Maeoka

Kouretsu Boku

An optical disc device of the present invention comprises an insertion detection optical sensor which detects insertion of an optical disc based on light emitted from a first light emitting element to a first light receiving element being blocked, and an ejection detection optical sensor provided on the downstream side in the carry-in direction to the insertion detection optical sensor to detect ejection of the optical disc based on light emitted from a second light emitting element to a second light receiving element being blocked. The optical disc device is structured such that, in a state that the optical disc is attached onto the turntable, when the light of the first light emitting element is blocked and the light of the second light emitting element is not blocked, the optical disc device recognizes that a lens cleaner is attached onto the turntable as the optical disc, and the optical disc device performs a cleaning operation.

Optical disc device and lens cleaner

An optical disc drive device has a metallic exterior casing and an internal unit to be housed in the exterior casing. The internal unit further includes an optical pickup unit for performing recording or reproduction of information signals on an optical disc, and a printed wiring substrate on which a connector electrically connected to the optical pickup unit and serving for transmission and reception of electrical signals from and to external electronic equipment is mounted. The exterior casing has an opening for allowing the connector to be exposed outside, the printed wiring substrate has a ground pattern formed to surround the connector, and a fringe portion of the opening of the exterior casing and the ground pattern are in electrical contact with each other. Thus, radiation noise from around wiring lines contained in the optical disc drive device or the like is reduced.

Optical disc drive device and interconnection structure

An optical disc driving device has a metallic exterior casing and an internal unit to be housed in the exterior casing. The internal unit further includes an optical pickup unit for performing recording or reproduction of information signals on an optical disc, and a printed wiring substrate on which a connector electrically connected to the optical pickup unit and serving for transmission and reception of electrical signals from and to external electronic equipment via an external-connection cable is mounted. The exterior casing has an opening for allowing the connector project outside, and the connector is connected to the external-connection cable in a direction that orthogonally crosses with a projecting direction of the connector from the opening, and the external-connection cable extends from the connector along a surface of the exterior casing.

Optical disc driving device and wiring structure

A disk device includes a turntable which is rotationally driven and, for placing a disk thereon, a clamper for rotatably holding the disk between the turntable and the clamper, a loading mechanism for carrying the disk inserted to between the turntable and the clamper, a clamp arm which includes a clamper holder for rotatably holding the clamper by a claw fitted to the hook with a clearance and an arm unit disposed pivotably on a pivot shaft positioned apart from the clamper holder, the clamp arm moving the clamper between a disk pressing position and a retreat position, and a clamper restricting member including a resilient portion capable of contacting a part of the clamper on the side opposite to the side of the clamper moved to the retreat position and on a side apart from the pivot shaft of the arm unit.

Disk device having a clamper restricting member

An optical disk device of the present application includes: a turntableincluding plural induction groovestoas concave portions radially extending from vicinity of a center of the turntableand having open portions in an outer periphery of the turntableand plural through-holestopenetrating bottom facestoon the vicinity of the center side of the plural induction groovestoand a top face of the turntable; and an outer rotor type spindle motorprovided with plural finstoas convex portions on a rotor on a side face thereof. The optical disk device of the present application utilizes an airflow generated by rotation of the rotor of the spindle motorand the turntablein conjunction therewith as a dust removing wind for removing dust attaching to an objective lens side area.

Optical disc device and method for controlling optical disc device

A disc drive device for driving a disc accommodated in a cartridge comprises: a magnetic head; a magnetic head supporting member for supporting the magnetic head to contact the disc and to be separated from the disc; a lifting plate configured to lift the magnetic head supporting member; and moving means for moving the lifting plate in a direction parallel to a surface of the disc, in which the moving means moves the lifting plate in the parallel direction until the lifting plate abuts the magnetic head supporting member, and further moves the lifting plate in the parallel direction with the lifting plate abutting the magnetic head supporting member so that the lifting plate lifts the magnetic head supporting member up to separate the magnetic head from the disc.

Disk drive device having a lifting plate configured to lift a magnetic head supporting member

Transparent disc cartridge

Disc cartridge

In a disk cartridge, a round portion with a circular arc shape whose center substantially coincides with that of a disk is formed at the forefront edge of the disk cartridge in the direction of insertion into a disk drive unit, and the remaining portion is a rectangular shape. The round portion preferably is formed so as to be decreased gradually in thickness toward its leading end. On the other hand, part of the components of the disk drive unit is arranged in an open space at corner portions at the forefront of the disk cartridge. A space in the disk drive unit thus can be utilized efficiently, whereby a small, thin disk drive unit having excellent operability and a disk cartridge permitting such a disk drive unit can be obtained.

Disk drive unit with part of feed motor coinciding in height with loaded disk cartridge

Disk cartridge

A clamp plate retaining surface, a handling surface positioned outside the outer circumference of the clamp plate retaining surface, and an information surface outside the outer circumference of the handling surface are provided in a substrate. The handling surface is formed to be a slope with its outer circumferential side being inclined downward with respect to the information surface. The resin forming the inner circumferential side end of the handling surface is melted and deformed to form a projection part, so that a clamp plate can be retained. Since the top part of the slope is deformed, a large projection part can be formed. As a result, a thin small-diameter optical disk and substrate can be obtained.

Optical disk, substrate of the same, and mold for forming the substrate

Growing community of inventors

Hyogo, Japan

Tomio Yamamoto