- Patent Title: Optical disc recording medium suitable for use in stacked manner
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Application No.: US15350387Application Date: 2016-11-14
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Publication No.: US09984718B2Publication Date: 2018-05-29
- Inventor: Kazuya Hisada
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2016-053359 20160317
- Main IPC: B32B3/02
- IPC: B32B3/02 ; G11B7/24038 ; G11B7/24018

Abstract:
An optical disc recording medium includes: a substrate; at least one recording layer formed on at least one side of the substrate; and a cover layer formed on the substrate and the recording layer. The cover layer having a first thickness with reference to a surface of the substrate, in an inside of a circle having a first radius from a center of the substrate. The cover layer having a second thickness larger than the first thickness with reference to the surface of the substrate, on a circumference having a second radius longer than the first radius from the center of the substrate. The cover layer having a third thickness smaller than the first thickness with reference to the surface of the substrate, on a circumference having a third radius longer than the first radius and shorter than the second radius from the center of the substrate.
Public/Granted literature
- US20170270959A1 OPTICAL DISC RECORDING MEDIUM SUITABLE FOR USE IN STACKED MANNER Public/Granted day:2017-09-21
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