Invention Grant
- Patent Title: Optical recording medium having a plurality of recording layers capable of suppressing off-track
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Application No.: US15911917Application Date: 2018-03-05
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Publication No.: US10204652B2Publication Date: 2019-02-12
- Inventor: Yo Ota , Kensaku Takahashi , Manami Miyawaki
- Applicant: SONY CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Chip Law Group
- Priority: JP2014-026304 20140214
- Main IPC: G11B7/24062
- IPC: G11B7/24062 ; G11B7/24035 ; G11B7/243 ; G11B7/24076 ; G11B7/007 ; G11B7/26 ; G11B7/24073 ; G11B7/2433 ; G11B7/24038 ; G11B7/085
Abstract:
An optical recording medium includes a light-receiving surface that receives incident light and at least three information signal layers on which information signals are to be optically recorded. Among the at least three information signal layers, the information signal layer closest to the light-receiving surface has a reflectance in a range of 4% to 11%.
Public/Granted literature
- US20180197572A1 OPTICAL RECORDING MEDIUM Public/Granted day:2018-07-12
Information query
IPC分类:
