Invention Grant
- Patent Title: Optical recording medium, optical information processor, and optical recording/reproducing method
- Patent Title (中): 光记录介质,光信息处理器和光记录/再现方法
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Application No.: US10516220Application Date: 2003-05-26
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Publication No.: US07656777B2Publication Date: 2010-02-02
- Inventor: Hiroaki Yamamoto , Teruhiro Shiono , Tatsuo Ito , Seiji Nishino , Sadao Mizuno
- Applicant: Hiroaki Yamamoto , Teruhiro Shiono , Tatsuo Ito , Seiji Nishino , Sadao Mizuno
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2002-159082 20020531
- International Application: PCT/JP03/06566 WO 20030526
- International Announcement: WO03/102941 WO 20031211
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
An optical recording medium which is a multilayer optical recording medium including a plurality of recording layers and records or reproduces information by the irradiation of light having a wavelength of λ0. At least one recording layer out of a plurality of recording layers includes a variable absorption film. The variable absorption film contains a material in which an electron energy has a band structure, and the absorption end of an absorption spectrum moves toward a longer wavelength side with a rise in temperature when light is absorbed by transition between electron bands, has a first absorptance to light having a wavelength of λ0 when a film temperature is a first temperature (application environment temperature), and has a second absorptance higher than the first absorptance to light having a wavelength of λ0 when a film temperature is a second temperature higher than the first temperature.
Public/Granted literature
- US20050207328A1 Optical recording medium, optical information processor, and optical recording/reproducing method Public/Granted day:2005-09-22
Information query
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