Invention Grant
- Patent Title: Optical information recording medium
- Patent Title (中): 光信息记录介质
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Application No.: US13358000Application Date: 2012-01-25
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Publication No.: US08642152B2Publication Date: 2014-02-04
- Inventor: Hiroshi Tabata
- Applicant: Hiroshi Tabata
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2011-022183 20110203
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
An optical information recording medium including: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers, wherein the surface of one of the side of the substrate and the cover layer is a light irradiation plane, wherein at least one of the information signal layers other than the information signal layer at the deepest portion from the light irradiation plane includes an inorganic recording layer that includes a W oxide and a Pd oxide, a first protective layer that is provided on a first principal plane of the inorganic recording layer, and a second protective layer that is provided on a second principal plane of the inorganic recording layer, wherein at least one of the first protective layer and the second protective layer is a layer with an extinction coefficient of 0.05 to 0.6.
Public/Granted literature
- US20120201993A1 OPTICAL INFORMATION RECORDING MEDIUM Public/Granted day:2012-08-09
Information query
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