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. 23, 2008
Filed:
Apr. 28, 2006
Shigeyuki Furomoto, Minato-ku, JP;
Shigeyuki Furomoto, Minato-ku, JP;
Mitsubishi Kagaku Media Co., Ltd., Tokyo, JP;
Abstract
A dual-layer optical recording medium, which is formed by adhering a disk substrate (inverted-stack structure) formed by stacking a reflective layer () and a recording layer () on a substrate () and a disk substrate (conventional-stack structure) formed by sequentially stacking a recording layer () and a reflective layer () on a transparent substrate () with a transparent resin layer interposed therebetween, is prepared such that the transparent resin layer has a product obtained by multiplying the thickness by the elastic modulus at 25±5° C. falling within the range of not less than 2.0×10MPa·μm to not more than 30.0×10MPa·μm, resulting in suppressing excessive deformation involving an adjacent track portion produced by recording optical information in the recording layer () of the inverted-stack structure, thereby reducing crosstalk and providing satisfactory recording and/or reading characteristics in high-speed recording applications.
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