Invention Grant
- Patent Title: Optical information recording medium
- Patent Title (中): 光信息记录介质
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Application No.: US11940258Application Date: 2007-11-14
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Publication No.: US07867595B2Publication Date: 2011-01-11
- Inventor: Takeshi Otsu , Akimasa Miyata , Motomitsu Hagiwara , Isao Matsuda , Fumi Hara , Shingo Kato , Takuo Kodaira
- Applicant: Takeshi Otsu , Akimasa Miyata , Motomitsu Hagiwara , Isao Matsuda , Fumi Hara , Shingo Kato , Takuo Kodaira
- 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: JP2006-308603 20061115
- Main IPC: B32B3/02
- IPC: B32B3/02

Abstract:
An optical information recording medium is provided having a superior jitter property even when an organic substance is used for a recording layer. The optical information recording medium has a substrate having a penetrating hole in a central portion thereof and a spiral pre-groove provided in one surface of the substrate, a reflection layer provided on the surface of the substrate in which the pre-groove is provided, a recording layer which is provided on the reflection layer and which is composed of an organic substance including a dye, and a light transmissive cover layer provided on the recording layer. In the optical information recording medium, the cover layer has an elastic modulus of 40 MPa or less at 25° C. in an interface region facing the recording layer.
Public/Granted literature
- US20080118698A1 OPTICAL INFORMATION RECORDING MEDIUM Public/Granted day:2008-05-22
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