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:
Mar. 03, 2009
Filed:
Sep. 13, 2005
Sachiko Ishibashi, Kanagawa, JP;
Fumi Hara, Gunma, JP;
Toru Fujii, Gunma, JP;
Yuji Arai, Gunma, JP;
Taiyo Yuden Co., Ltd, Tokyo, JP;
Abstract
For improving the humidity resistance reliability and the jitter property of an optical disk, the adhesive layer used for bonding a bonding type optical information recording medium is defined such that the glass transition temperature is 100° C. or higher at 200° C. or lower, the modulus of elasticity at 25 to 80° C. is 1000 MPa or more, the adhesion strength thereof is 4 N or more, the reflective layer is defined such that the hardness is 60 mgf/μmor more as the nano indentation hardness, and the dye recording layer is defined such that the water solubility of the dye as light absorption is 0.2 or less.