Invention Grant
- Patent Title: Information recording medium and its production process
- Patent Title (中): 信息记录介质及其生产过程
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Application No.: US11997114Application Date: 2006-07-06
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Publication No.: US07947353B2Publication Date: 2011-05-24
- Inventor: Yoshitaka Sakaue , Takashi Nishihara , Rie Kojima , Akio Tsuchino
- Applicant: Yoshitaka Sakaue , Takashi Nishihara , Rie Kojima , Akio Tsuchino
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2005-219954 20050729
- International Application: PCT/JP2006/313474 WO 20060706
- International Announcement: WO2007/013276 WO 20070201
- Main IPC: B32B3/02
- IPC: B32B3/02

Abstract:
In each of at least two information layers (1, 2) which constitute a information recording medium having a plurality of information layers on its one side, the compositions of the recording layer (7) and the dielectric layers (6, 8) adjacent to the recording layer (7) in one information layer (1) are common to the compositions of the corresponding layers (12, 11, 13) in the other information layer, so that the recording layers (7, 12) and the dielectric layers (6, 11) and (8, 13) in the two information layers (1, 2) can be formed in common sputtering film-forming chambers without the replacement of targets, which makes it possible to produce a multi-layer single-sided recording medium with a decreased time loss in the production process.
Public/Granted literature
- US20100151178A1 INFORMATION RECORDING MEDIUM AND ITS PRODUCTION PROCESS Public/Granted day:2010-06-17
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