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:
Sep. 15, 2015
Filed:
Dec. 14, 2009
Hidenori Somei, Takasaki, JP;
Takeo Tsuzuki, Takasaki, JP;
Takuo Kodaira, Takasaki, JP;
Daizo Yokoyama, Takasaki, JP;
Hidenori Somei, Takasaki, JP;
Takeo Tsuzuki, Takasaki, JP;
Takuo Kodaira, Takasaki, JP;
Daizo Yokoyama, Takasaki, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
Provided is an optical information recording medium employing an In-Groove recording system, and having a preferable recording characteristic with a high modulation degree and low jitter characteristics. The medium is comprised of a circular-disk shaped substratehaving a through hole at a center portion thereof and a helical guide grooveon one surface thereof; a reflective layerformed on the guide grooveof the substrate; a recording layerformed on the reflective layerand composed of an organic material including a dye; a protection layerprovided on the recording layer; and a light-transmissive layerformed on the protection layer. The recording layerincludes an organic dye which is an azo metal complex compound having a structure represented by (Chemical formula 1) and a functional group represented by (Chemical formula 2).