发明申请
- 专利标题： Optical disc
- 专利标题（中）： 光盘
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申请号： US11140000申请日： 2005-05-31
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公开(公告)号： US20050287331A1公开(公告)日： 2005-12-29
- 发明人: Hitoshi Noguchi , Masahiro Higuchi , Yoshiaki Maeno
- 申请人： Hitoshi Noguchi , Masahiro Higuchi , Yoshiaki Maeno
- 申请人地址： JP Anpachi-gun JP Moriguchi-shi
- 专利权人： SANYO MARVIC MEDIA CO.,LTD,SANYO ELECTRIC CO., LTD.
- 当前专利权人： SANYO MARVIC MEDIA CO.,LTD,SANYO ELECTRIC CO., LTD.
- 当前专利权人地址： JP Anpachi-gun JP Moriguchi-shi
- 优先权： JPJP2004-163050 20040601; JPJP2004-175828 20040614
- 主分类号： B32B3/02
- IPC分类号： B32B3/02 ; G11B7/243 ; G11B7/257 ; G11B7/258
摘要：
The present invention was made to improve the strength, such as heat resistance, of a disc comprising a biodegradable resin. The optical disc according to the present invention is formed by bonding two substrates, at least one of the substrates having an information recording area. One substrate disposed on a light incident side of the optical disc is composed of a biodegradable resin that is uncrystallized and allows light to transmit therethrough. Another substrate disposed away from the light incident side of the optical disc is composed of the biodegradable resin having higher crystallinity than that of the substrate disposed on a light incident side of the optical disc.
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