发明名称 |
PHOTO-CURABLE ADHESIVE SHEET, PHOTO-CURABLE TRANSFER SHEET, OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR PREPARING OPTICAL INFORMATION RECORDING MEDIUM |
摘要 |
A process for the preparation of an optical information recording medium comprises superposing two optical information recording substrates having an uneven surface of recorded pits and/or grooves on each other through a photo-curable adhesive sheet comprising a photo-curable composition which comprises a reactive polymer having a photopolymerizable functional group and Tg of not more than 20 DEG C, the photo-curable adhesive sheet having a light transmittance of not less than 70% in a wavelength range of 380 to 420 nm, such that the two uneven surfaces face each other, depressing the substrates and sheet to form a laminate, and curing the laminate by light. A process for the preparation of an optical information recording medium comprises placing a photo-curable transfer sheet comprising a photo-curable composition which comprises a reactive polymer having a photopolymerizable functional group and Tg of not more than 20 DEG C on an optical information recording substrate having an uneven surface of recorded pits and/or grooves such that one side of the photo-curable transfer sheet is in contact with the uneven surface of the optical information recording substrate, depressing the sheet and substrate to form a laminate in which the one side of the photo-curable transfer sheet adheres closely to the uneven surface, and exposing the photo-curable transfer sheet of the laminate to ultraviolet rays to cure the transfer sheet. A photo-curable transfer sheet comprises a photo-curable composition which comprises a reactive polymer having a photopolymerizable functional group andwhich is capable of deforming by application of pressure, at least one side of the photo-curable transfer sheet having a surface roughness (Ra) of not more than 30nm. |
申请公布号 |
EP1484377(B1) |
申请公布日期 |
2012.11.14 |
申请号 |
EP20030710292 |
申请日期 |
2003.03.10 |
申请人 |
BRIDGESTONE CORPORATION |
发明人 |
KITANO, HIDEKI;KOTSUBO, HIDEFUMI;INAMIYA, TAKATO |
分类号 |
C09J7/02;G11B7/24;G11B7/24038;G11B7/256;G11B7/26 |
主分类号 |
C09J7/02 |
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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