Invention Grant
- Patent Title: Optical information recording medium capable of changing the light absorption amount
- Patent Title (中): 能够改变光吸收量的光学信息记录介质
-
Application No.: US12686604Application Date: 2010-01-13
-
Publication No.: US08223618B2Publication Date: 2012-07-17
- Inventor: Hiroshi Uchiyama , Yusuke Suzuki , Takao Kudo , Katsumi Miura
- Applicant: Hiroshi Uchiyama , Yusuke Suzuki , Takao Kudo , Katsumi Miura
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JPP2009-009218 20090119
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
An optical information recording medium includes a recording layer that includes a mark layer in which recording marks formed in accordance with condensed recording light are aligned and has a recording light absorption amount of 20.8% or less with respect to an innermost depth as a depth of the mark layer from a side thereof that the recording light enters to a side thereof that is most distant from the side that the recording light enters, and a change amount of a light absorption amount with respect to measurement light having a wavelength 10 nm shorter than that of the recording light at a time a light absorption amount with respect to measurement light having the same wavelength as the recording light is used as a reference, of 8.0% or more per 0.30 mm.
Public/Granted literature
- US20100182896A1 OPTICAL INFORMATION RECORDING MEDIUM Public/Granted day:2010-07-22
Information query
IPC分类: