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. 18, 2007
Filed:
Sep. 29, 2005
Fumi Hara, Nakamuroda Haruna-machi, JP;
Sachiko Ishibashi, Nakamuroda Haruna-machi, JP;
Masashi Satoh, Nakamuroda Haruna-machi, JP;
Toru Fujii, Nakamuroda Haruna-machi, JP;
Yuji Arai, Nakamuroda Haruna-machi, JP;
Fumi Hara, Nakamuroda Haruna-machi, JP;
Sachiko Ishibashi, Nakamuroda Haruna-machi, JP;
Masashi Satoh, Nakamuroda Haruna-machi, JP;
Toru Fujii, Nakamuroda Haruna-machi, JP;
Yuji Arai, Nakamuroda Haruna-machi, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
For improving the jitter property and ensuring the high reliability of an optical disk, a metal film containing phosphorus is disposed in a reflective layer. The layer has a hardness of 60 mgf/μmor more as nano indentation hardness, and an adhesive layer used for bonding has a glass transition temperature of 100° C. or higher but 200° C. or lower, an elastic modulus at 25 to 80° C. of 1000 MPa or more, and an adhesion strength of 4N or more. The dye for the dye recording layer has a water solubility of 20% or less as measured as light absorbance of hot water in which the dye recording layer is soaked.