Invention Grant
- Patent Title: Optical recording medium
- Patent Title (中): 光记录介质
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Application No.: US13640812Application Date: 2011-04-06
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Publication No.: US08685517B2Publication Date: 2014-04-01
- Inventor: Takeshi Miki , Manami Miyawaki , Yuki Tauchi
- Applicant: Takeshi Miki , Manami Miyawaki , Yuki Tauchi
- Applicant Address: JP Tokyo JP Hyogo
- Assignee: Sony Corporation,Kabushiki Kaisha Kobe Seiko Sho
- Current Assignee: Sony Corporation,Kabushiki Kaisha Kobe Seiko Sho
- Current Assignee Address: JP Tokyo JP Hyogo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2010-095883 20100419; JP2011-022171 20110203
- International Application: PCT/JP2011/002036 WO 20110406
- International Announcement: WO2011/132371 WO 20111027
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
[Object] To provide an optical recording medium that can be applied to a write-once optical recording medium having a high capacity of about 25 GB per one layer, and has good recording properties when a multilayered recording layer configuration is provided.[Solving Means] It includes a substrate 21 and two to four recording layers 221 and 222. At least one or more of these recording layers 221 and 222 are specific recording layers with a composition containing PdO and PdO2 as well as at least one of completely oxidized In, Zn, Al and Sn (in other words, In2O3, ZnO, Al2O3 and SnO2). Adjacent to the specific recording layers, dielectric layers 232a and 232b of In/Al oxide layers containing at least either of In or Al as a main component are disposed.
Public/Granted literature
- US20130052389A1 OPTICAL RECORDING MEDIUM Public/Granted day:2013-02-28
Information query
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