发明授权
- 专利标题: Optical recording medium
- 专利标题(中): 光记录介质
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申请号: US09941523申请日: 2001-08-29
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公开(公告)号: US06707787B2公开(公告)日: 2004-03-16
- 发明人: Takeshi Yamasaki , Tomomi Yukumoto , Toshiyuki Kashiwagi
- 申请人: Takeshi Yamasaki , Tomomi Yukumoto , Toshiyuki Kashiwagi
- 优先权: JPP2000-261765 20000830
- 主分类号: G11B370
- IPC分类号: G11B370
摘要:
An optical recording medium capable of improving uniformity of thickness of a protective film and suppressing warping. The medium is configured to include a substrate, an optical recording film formed on the substrate, and a light transmitting protective film formed above the optical recording layer, wherein the protective film includes a polymer sheet produced by melt casting and an adhesive layer for bonding the polymer sheet to the optical recording layer. As the polymer sheet, a polycarbonate sheet, a cyclic polyolefin sheet, etc. can be used. As the adhesive layer, an ultraviolet curing resin, a heat curing resin, an epoxy resin-based adhesive agent or a pressure-sensitive tackiness agent may be used alone or mixed or stacked.