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. 11, 2011
Filed:
Nov. 14, 2007
Takeshi Otsu, Takasaki, JP;
Akimasa Miyata, Takasaki, JP;
Motomitsu Hagiwara, Takasaki, JP;
Isao Matsuda, Takasaki, JP;
Fumi Hara, Takasaki, JP;
Shingo Kato, Takasaki, JP;
Takuo Kodaira, Takasaki, JP;
Takeshi Otsu, Takasaki, JP;
Akimasa Miyata, Takasaki, JP;
Motomitsu Hagiwara, Takasaki, JP;
Isao Matsuda, Takasaki, JP;
Fumi Hara, Takasaki, JP;
Shingo Kato, Takasaki, JP;
Takuo Kodaira, Takasaki, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
An optical information recording medium is provided having a superior jitter property even when an organic substance is used for a recording layer. The optical information recording medium has a substrate having a penetrating hole in a central portion thereof and a spiral pre-groove provided in one surface of the substrate, a reflection layer provided on the surface of the substrate in which the pre-groove is provided, a recording layer which is provided on the reflection layer and which is composed of an organic substance including a dye, and a light transmissive cover layer provided on the recording layer. In the optical information recording medium, the cover layer has an elastic modulus of 40 MPa or less at 25° C. in an interface region facing the recording layer.