发明名称 |
BONDED OPTICAL DISKS AND A METHOD AND AN APPARATUS FOR PRODUCING THE SAME |
摘要 |
A bonded optical disk comprising first and second transparent substrates bonded with a light-permeable, pressure sensitive adhesive layer and at least one information recording layer wherein the pressure sensitive adhesive layer has been formed from a pressure sensitive adhesive precursor, having a viscosity of 10 to 5000 cps and being applied onto at least one of the first substrate and the second substrate by radiation curing and has a gel fraction of not less than 50% and a storage modulus of 1.0x104 to 1.0x107 dyn/cm2 at 25° C., or in place of the pressure sensitive adhesive layer, an adhesive layer derived from a radiation curable adhesive precursor having a viscosity of 500 to 10000 cps, and the adhesive precursor is subjected to a higher pressure than an atmospheric pressure, prior to being irradiated, as well as a method and an apparatus for producing a bonded optical disk. |
申请公布号 |
EP1051705(A1) |
申请公布日期 |
2000.11.15 |
申请号 |
EP19980966082 |
申请日期 |
1998.12.22 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
SAITO, KAZUTA;TAKAMATSU, YORINOBU;TAKAMORI, KATSUYA |
分类号 |
G11B7/24;B29C65/48;G11B7/26 |
主分类号 |
G11B7/24 |
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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