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. 11, 2013
Filed:
Aug. 20, 2010
Takayuki Fujimoto, Tsuchiura, JP;
Makoto Ibe, Hitachinaka, JP;
Seiji Hamaie, Kawasaki, JP;
Nozomu Harada, Kawasaki, JP;
Shinya Asano, Tokyo, JP;
Yoshiaki Yamauchi, Omitama, JP;
Takayuki Fujimoto, Tsuchiura, JP;
Makoto Ibe, Hitachinaka, JP;
Seiji Hamaie, Kawasaki, JP;
Nozomu Harada, Kawasaki, JP;
Shinya Asano, Tokyo, JP;
Yoshiaki Yamauchi, Omitama, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Abstract
An optical disc apparatus, presenting recording quality without degradation by an extreme temperature rise in an objective-lens drive mechanism in an optical pickup, includes a mechanical chassis on which a disc rotation mechanism, an optical pickup, and a transfer mechanism are mounted, a decorative plate that is a plate-shaped member located between the disc and the optical pickup and fixed on the mechanical chassis, a disc tray for loading and removing the disc, a circuit board for operation control, and an apparatus housing containing the components. A recess is formed in an indented shape in a portion of the mechanical chassis facing an outer peripheral region of the disc recording surface. An incline is formed in a position close to an opening of the disc tray for mounting the mechanical chassis and opposite the outer peripheral region of the disc recording surface, and slopes gently down to the recess.