Invention Grant
- Patent Title: Optical recording medium and method for manufacturing the same
- Patent Title (中): 光记录介质及其制造方法
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Application No.: US12882281Application Date: 2010-09-15
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Publication No.: US08409686B2Publication Date: 2013-04-02
- Inventor: Hiroyasu Inoue , Takashi Kikukawa , Koji Mishima , Yoshiaki Komma , Joji Anzai , Jun Nakano , Manami Miyawaki , Shigeki Takagawa
- Applicant: Hiroyasu Inoue , Takashi Kikukawa , Koji Mishima , Yoshiaki Komma , Joji Anzai , Jun Nakano , Manami Miyawaki , Shigeki Takagawa
- Applicant Address: JP Tokyo JP Osaka JP Tokyo
- Assignee: TDK Corporation,Panasonic Corporation,Sony Corporation
- Current Assignee: TDK Corporation,Panasonic Corporation,Sony Corporation
- Current Assignee Address: JP Tokyo JP Osaka JP Tokyo
- Agency: Porzio, Bromberg & Newman, P.C.
- Priority: JP2009-220410 20090925
- Main IPC: B32B3/02
- IPC: B32B3/02

Abstract:
An optical recording medium having three or more information recording layers reduces crosstalk caused by multi-reflected beams and improves signal quality. In the optical recording medium having three or more information recording layers, the refractive index of a plurality of intermediate layers disposed between adjacent information recording layers is greater than the refractive index of a cover layer disposed between a light incident surface and an information recording layer being the closest from the light incident surface.
Public/Granted literature
- US20110076436A1 OPTICAL RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2011-03-31
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