发明名称 |
Pressure-sensitive adhesive sheet for optical data recording medium, optical data recording medium, and method and device for reproducing data from optical data recording medium |
摘要 |
A pressure-sensitive adhesive sheet 1 for an optical data recording medium D1 from which a signal with a mark length shorter than the resolution limit of an optical system of a reproducing device is capable of being reproduced by reproduction light emitted during reproducing, the pressure-sensitive adhesive sheet 1 having an adhesive transparent resin layer 11 to be disposed on an data recording layer 3 of the optical data recording medium D1, the transparent resin layer 11 having a (meth)acrylate copolymer containing no acidic group as a main component, the transparent resin layer 11 having a storage elastic modulus at 23° C. of 1.5×105 Pa or less and a gel fraction of 68 wt % or more. The transparent resin layer 11 of this pressure-sensitive adhesive sheet 1 for an optical data recording medium can be used for producing an optical data recording medium which can reproduce from a mark with a length shorter than the resolution of an optical system of a reproducing device, and which is stable against changes in the external environment when responding to status of use. |
申请公布号 |
US8691357(B2) |
申请公布日期 |
2014.04.08 |
申请号 |
US201013497866 |
申请日期 |
2010.09.27 |
申请人 |
TAYA NAOKI;NAKAYAMA TAKEHITO;TAJIMA HIDEHARU;HARADA YASUHIRO;YAMAMOTO MASAKI;YAMADA HIROHISA;LINTEC CORPORATION;SHARP CORPORATION |
发明人 |
TAYA NAOKI;NAKAYAMA TAKEHITO;TAJIMA HIDEHARU;HARADA YASUHIRO;YAMAMOTO MASAKI;YAMADA HIROHISA |
分类号 |
G11B7/24 |
主分类号 |
G11B7/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|