The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1999
Filed:
Aug. 11, 1997
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
The present invention is provided with a cartridge holder for installation of a cartridge which houses an optical disk, and a tray which is located below said cartridge holder and in which an unhoused optical disk is placed, and which can move to-and-fro between a position in which information are recorded and/or played back and a position in which the optical disk is exchanged, a center shaft which rotates by means of a rotating drive means, and a holding mechanism including a turntable which is secured to the shaft and is provided with a magnetic body, an optical disk centering means and a support surface which supports the optical disk; and a clamper which can be brought into contact with and separated from the support surface of said turntable and which maintains in contact with the support surface of the turntable optical disks which do not have hubs. The optical information recording/playback device allows installation of a variety of optical information recording media such as optical disk with or without hubs and optical disks which are housed in a cartridge or unhoused.