Invention Grant
- Patent Title: Production of a multilayer optical recording medium using a stamper
- Patent Title (中): 使用压模制造多层光学记录介质
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Application No.: US12103955Application Date: 2008-04-16
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Publication No.: US07955786B2Publication Date: 2011-06-07
- Inventor: Yukari Sumioka
- Applicant: Yukari Sumioka
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-112991 20070423
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
Provided is a light transmissive stamper having light transmissivity with respect to an ultraviolet ray and durability for repeated use. Specifically, on a light transmissive substrate, a light transmissive auxiliary layer and an inorganic resist layer are formed sequentially, and a light beam is selectively irradiated to the inorganic resist layer, to thereby modify an inorganic resist ranging from a surface of the inorganic resist layer to a surface of the light transmissive auxiliary layer. Then, a part modified by the light beam or an unmodified part is selectively removed until the light transmissive auxiliary layer is exposed, thereby forming an uneven pattern corresponding to an information pattern in the inorganic resist layer.
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