Invention Grant
- Patent Title: Optical information recording medium and manufacturing method thereof
- Patent Title (中): 光信息记录介质及其制造方法
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Application No.: US12333269Application Date: 2008-12-11
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Publication No.: US08119216B2Publication Date: 2012-02-21
- Inventor: Fumi Hara , Takeshi Otsu , Isao Matsuda , Shingo Katoh , Masashi Satoh
- Applicant: Fumi Hara , Takeshi Otsu , Isao Matsuda , Shingo Katoh , Masashi Satoh
- Applicant Address: JP Tokyo
- Assignee: Taiyo Yuden Co., Ltd.
- Current Assignee: Taiyo Yuden Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Law Office of Katsuhiro Arai
- Priority: JP2007-320584 20071212; JP2008-285956 20081106
- Main IPC: B32B3/02
- IPC: B32B3/02

Abstract:
An optical information recording medium has at least an optical reflective layer, an optical recording layer, an protective layer, and an optical transparency layer formed in that order on the main surface of a disc-shaped substrate. An area in which the protective layer is formed is made wider than an area in which the reflective layer is formed, and made narrower than an area in which the optical transparency layer is formed.
Public/Granted literature
- US20090154332A1 OPTICAL INFORMATION RECORDING MEDIUM AND MANUFACTURING METHOD THEREOF Public/Granted day:2009-06-18
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