OPTICAL INFORMATION RECORDING MEDIUM
    44.
    发明申请
    OPTICAL INFORMATION RECORDING MEDIUM 有权
    光信息记录介质

    公开(公告)号:US20150055445A1

    公开(公告)日:2015-02-26

    申请号:US14533378

    申请日:2014-11-05

    IPC分类号: G11B7/013 G11B7/24038

    摘要: An optical information recording medium has a first information recording layer (20) and a second information recording layer (40) each of which includes (i) a group of pre-pits (31, 51) constituting marks (32, 52) and spaces (33, 53) and (ii) a super-resolution film (23, 43), the marks (32, 52) and the spaces (33, 53) having different lengths, an average length of a smallest mark that is smallest in length and a smallest space that is smallest in length being less than or equal to a resolution limit of a reproduction optical system for reproducing information recorded on the first information recording layer (20) and the second information recording layer (40), the group of pre-pits (31, 51) being formed so that a push-pull signal for the reproduction optical system to reproduce the information recorded by the group of pre-pits is negative in polarity. This provides an inexpensive and high-capacity multilayer optical information recording medium based on a super-resolution technology.

    摘要翻译: 光信息记录介质具有第一信息记录层(20)和第二信息记录层(40),每个信息记录层包括:(i)一组构成标记(32,52)的预凹坑(31,51)和空间 (33,53)和(ii)超分辨率胶片(23,43),所述标记(32,52)和所述空间(33,53)具有不同的长度,最小标记的平均长度在 长度和长度最小的最小空间小于或等于用于再现记录在第一信息记录层(20)和第二信息记录层(40)上的信息的再现光学系统的分辨率限制,该组 形成预凹坑(31,51),使得用于再现光学系统的推挽信号再现由该凹坑组记录的信息的极性是负的。 这提供了基于超分辨率技术的便宜且大容量的多层光学信息记录介质。

    Photo-curable adhesive sheet, photo-curable transfer sheet, optical information recording medium, and method for preparing optical information recording medium
    50.
    发明申请
    Photo-curable adhesive sheet, photo-curable transfer sheet, optical information recording medium, and method for preparing optical information recording medium 审中-公开
    光固化性粘合片,光固化性转印片,光学信息记录介质以及光学信息记录介质的制造方法

    公开(公告)号:US20050158500A1

    公开(公告)日:2005-07-21

    申请号:US10507320

    申请日:2003-03-10

    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° 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° 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 and which 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 30 nm.

    摘要翻译: 一种用于制备光学信息记录介质的方法包括通过包含光固化性组合物的光固化性粘合片将具有记录凹坑和/或凹槽的不平坦表面的两个光学信息记录基片重叠在一起,所述光固化性粘合片包含反应性聚合物 具有光聚合性官能团和Tg不超过20℃的光固化型粘合片,其光透射率在380〜420nm的波长范围内具有不小于70%的光透射率,使得两个不均匀表面面对每个 另一方面,压下基材和片材以形成层压体,并用光固化层压材料。 制备光学信息记录介质的方法包括将光可固化组合物的光固化性转印片材放置在光学信息记录介质上,所述光固化性组合物包含具有可光聚合官能团的反应性聚合物和Tg不超过20℃ 具有记录凹坑和/或凹槽的不平坦表面的基板,使得光固化转印片的一侧与光学信息记录基板的不平坦表面接触,按压片材和基底以形成层压体,其中一个 光固化性转印片的侧面紧贴于凹凸面,将层叠体的光固化性转印片露出紫外线,使转印片固化。 光固化性转印片包含光固化性组合物,其包含具有光聚合性官能团的反应性聚合物,其能够通过施加压力而变形,所述光固化性转印片的至少一面具有表面粗糙度(Ra )不大于30nm。