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    • 5. 发明申请
    • Optical recording medium and method of producing the same
    • 光记录介质及其制造方法
    • US20080068968A1
    • 2008-03-20
    • US11978350
    • 2007-10-29
    • Takeshi YamasakiTomomi Yukumoto
    • Takeshi YamasakiTomomi Yukumoto
    • G11B3/74
    • G11B7/24038G11B7/26Y10T428/21
    • An optical recording medium capable of suppressing film thickness irregularity of interlayer between a plurality of optical recording layers and effects of warps of a transfer substrate and arising of dusts and burrs problems, etc. and a method of producing the optical recording medium are provided. An optical recording medium has a structure wherein at least two optical recording layers (11, 13) stacked via an interlayer 12 and a light transmitting layer 14 provided on the optical recording layer are provided at least one surface of a medium substrate 10, for performing recording and reproducing by irradiating a light to the optical recording layers (11, 13) through the light transmitting layer 14, and the interlayer includes at least one layer of ultraviolet curing resin film made to be a film in advance and is a film formed with an uneven shape corresponding to a recording pit or an uneven shape (12p) to be a guide groove on its surface and cured.
    • 提供能够抑制多个光学记录层之间的层间膜的膜厚不均匀性和转印基板的翘曲的影响并且由于灰尘和毛刺问题引起的光记录介质等以及制造该光学记录介质的方法。 光记录介质具有以下结构:在介质基板10的至少一个表面上设置有经由中间层12堆叠的至少两个光记录层(11,13)和设置在光记录层上的透光层14,用于执行 通过透光层14向光记录层(11,13)照射光进行记录和再现,并且中间层包括预先形成为膜的至少一层紫外线固化树脂膜和形成有膜 对应于记录坑或不平坦形状(12p)的不平坦形状作为其表面上的引导槽并固化。
    • 7. 发明授权
    • Protective film for optical disks and optical disk using the film
    • 使用该胶片的光盘保护膜和光盘
    • US06823528B2
    • 2004-11-23
    • US10329735
    • 2002-12-26
    • Takeshi YamasakiTomomi YukumotoKazuya Katoh
    • Takeshi YamasakiTomomi YukumotoKazuya Katoh
    • G11B724
    • G11B7/2542G11B7/24056G11B7/2534G11B7/256G11B7/259Y10T428/28Y10T428/2891
    • A protective film for optical disks comprising an acrylic adhesive layer disposed on one face of a light transmitting substrate film, wherein a change in transmittance (X) expressed by equation [1] is 10% or smaller and the amount of elution of halogen ions and the amount of alkaline ions from an acrylic adhesive constituting the acrylic adhesive layer are each 10 ppm or smaller; and an optical disk using the protective film. X(%)=[(Ta−Tb)/Ta]×100  [1] (Ta: an initial transmittance of light of 405 nm through the protective film, Tb: a transmittance of light of 405 nm through the protective film after the protective film is left standing at 80° C. in 85% RH for 1,000 hours). The protective film is used for protecting the information recording layer of the optical disk and the functions of recording and regeneration of the optical disk are not adversely effected.
    • 一种用于光盘的保护膜,其包括设置在透光基底膜的一个面上的丙烯酸粘合剂层,其中由式[1]表示的透射率(X)的变化为10%以下,卤素离子的洗脱量 构成丙烯酸类粘合剂层的丙烯酸类粘合剂的碱性离子的量为10ppm以下, (Ta:通过保护膜的405nm的光的初始透射率,Tb:保护膜在80℃下静置后通过保护膜的405nm的光的透射率。 在85%RH下进行1000小时)。 保护膜用于保护光盘的信息记录层,并且不会不利地影响光盘的记录和再生功能。