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:
Dec. 26, 2006
Filed:
Apr. 23, 2003
Satoru Manabe, Kanagawa, JP;
Kiyofumi Sato, Kanagawa, JP;
Tsuneo Uwabo, Tokyo, JP;
Mitsumi Electric Co., Ltd., Tokyo, JP;
Abstract
A disc drive includes a main body having a roughly box-shaped casing and a top plate which covers the upper side of the casing, a disc tray having a disc holding portion in which an optical disc is to be placed and being movable with respect to the main body through an opening formed on the front side of the main body, and a convex portion provided on the top plate so as to protrude inside the main body and having a shape that its horizontal cross-sectional area decreases gradually toward a tip thereof. The convex portion being positioned in a region of the top plate corresponding to the disc holding portion of the disc tray in a state that the disc tray is fully inserted into the main body. The disc drive may further includes a roughly arc-shaped ridge portion formed in the region of the top plate so as to protrude inside the main body. The ridge portion also has a shape that its horizontal cross-sectional area decreases gradually toward a tip thereof. According to the disc drive having the above structure, it is possible to obtain excellent recording and playback characteristics of the optical disc.