发明名称 |
PLATTENFÖRMIGES MEHRSCHICHTGFES INFORMATIONSAUFZEICHNUNGSMEDIUMUND DESSEN HERSTELLUNGSVERFAHREN |
摘要 |
The present invention relates to a multi-layered disc-shaped information recording medium having a plurality of signal recording layers each carrying information signals. In preparing the recording medium, a first substrate obtained on punching a sheet obtained in turn by having a signal recording pattern transcribed on it from a first stamper and by forming a semi-transparent film on a signal surface is bonded to a second substrate obtained on injection molding a synthetic resin material. The second substrate is prepared by having transcribed to it a signal recording pattern formed on a second stamper provided on an injection molding device. A reflective film is formed on a signal surface having the transcribed second substrate. The first and second substrates are bonded together on their signal recording layers by a transparent adherent layer. <IMAGE> |
申请公布号 |
AT321335(T) |
申请公布日期 |
2006.04.15 |
申请号 |
AT20000900433T |
申请日期 |
2000.01.18 |
申请人 |
SONY CORPORATION |
发明人 |
KASHIWAGI, TOSHIYUKI;YAMASAKI, TAKESHI;FURUKI, MOTOHIRO;YUKUMOTO, TOMOMI |
分类号 |
B29C35/08;B29C59/02;B29C59/04;G11B7/24;G11B7/26;(IPC1-7):G11B7/26 |
主分类号 |
B29C35/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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