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:
Jan. 22, 2008
Filed:
Jul. 01, 2003
Hiroyasu Inoue, Chuo-ku, JP;
Koji Mishima, Chuo-ku, JP;
Masaki Aoshima, Chuo-ku, JP;
Hironori Kakiuchi, Chuo-ku, JP;
Hiroyasu Inoue, Chuo-ku, JP;
Koji Mishima, Chuo-ku, JP;
Masaki Aoshima, Chuo-ku, JP;
Hironori Kakiuchi, Chuo-ku, JP;
TDK Corporation, Chuo-Ku, JP;
Abstract
An optical recording medium includes a substrate, a light transmission layer and a plurality of recording layers between the substrate and the light transmission layer and capable of recording data in the plurality of recording layers and reproducing data recorded in the plurality of recording layers by projecting a laser beam via the light transmission layer onto the plurality of recording layers, at least one recording layer other than a farthest recording layer from the light transmission layer including a reflective film containing Ag as a primary component and C as an additive. In the thus constituted optical recording medium, recording characteristics and reproducing characteristic of the respective recording layers can be improved.