Invention Grant
- Patent Title: Manufacturing method of optical information recording medium and optical information recording medium
- Patent Title (中): 光信息记录介质和光信息记录介质的制造方法
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Application No.: US13354759Application Date: 2012-01-20
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Publication No.: US08671420B2Publication Date: 2014-03-11
- Inventor: Takeshi Gouko
- Applicant: Takeshi Gouko
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2011-022180 20110203
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
A manufacturing method of an optical information recording medium includes forming a substrate which has a first main surface and a second main surface, forming a first information signal layer on the first main surface of the substrate, forming an intermediate layer on the first information signal layer, forming a second information signal layer on the intermediate layer, irradiating light from the second main surface side of the substrate and recording identification information on a first region out of the first region and a second region, and forming a barrier layer with regard to the second main surface in the second region which excludes the first region where the identification information is recorded before the recording of the identification information.
Public/Granted literature
- US20120201117A1 MANUFACTURING METHOD OF OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM Public/Granted day:2012-08-09
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