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    • 1. 发明授权
    • Optical information medium and recording method therefor
    • 光信息媒体及其记录方法
    • US06728198B2
    • 2004-04-27
    • US10162300
    • 2002-06-04
    • Toru FujiiToshiaki TajimaYuji TomizawaRyou NegishiEmiko Hamada
    • Toru FujiiToshiaki TajimaYuji TomizawaRyou NegishiEmiko Hamada
    • G11B724
    • G11B7/24079G11B7/24076
    • An optical information medium made up of a transparent substrate capable of allowing a recording laser beam to penetrate therethrough; a recording layer formed on the transparent substrate; and a reflective layer formed on the recording layer and reflecting a reproducing laser beam thereupon. A numerical aperture of an objective lens of an optical pickup for irradiating the recording laser beam on the recording layer is approximately 0.65, and the numerical aperture of an objective lens of the optical pickup for irradiating the recording laser beam on the reflection layer is approximately 0.60. An inclination angle &thgr; at both edges of the groove for tracking, being formed spirally on the surface of the transparent substrate on which the recording layer is formed, with respect to the main surface of the transparent substrate, is selected to be from 55° to 75°. An index ∝, expressed by 1−Dr/Ds when assuming that the depth of the groove on the transparent substrate is Ds and the depth of the recording layer at the position of said groove is Dr, is selected to be from 0.2 to 0.4. Further, the full width at half maximum of the groove on the transparent substrate is selected to be from one-third (⅓) to a half (½) of the pitch p of the groove. With this optical information medium, it is possible to record high density signals as signals that are readable optically, as well as to record them with stability.
    • 由能够使记录激光束透过的透明基板构成的光信息介质; 形成在所述透明基板上的记录层; 以及形成在记录层上并在其上反射再现激光束的反射层。 用于将记录激光束照射在记录层上的用于照射记录激光束的光学拾取器的物镜的数值孔径大约为0.65,用于将记录激光束照射在反射层上的光学拾取器的物镜的数值孔径大约为0.60 。 在形成有记录层的透明基板的表面上相对于透明基板的主表面螺旋地形成用于跟踪的凹槽的两个边缘处的倾斜角度θ选择为55°至 75°。 当假设透明基板上的凹槽的深度为Ds并且记录层在所述凹槽的位置的深度为Dr时,由1-Dr / Ds表示的折射率α被选择为0.2至0.4。 此外,透明基板上的凹槽的最大半宽选择为凹槽的间距p的三分之一(1/3)至半(1/2)。 利用该光学信息介质,可以将高密度信号记录为可光学读取的信号,并且可以稳定地记录它们。
    • 3. 发明授权
    • Optical information medium and recording method therefor
    • 光信息媒体及其记录方法
    • US06452899B1
    • 2002-09-17
    • US09340212
    • 1999-06-25
    • Toru FujiiToshiaki TajimaYuji TomizawaRyou NegishiEmiko Hamada
    • Toru FujiiToshiaki TajimaYuji TomizawaRyou NegishiEmiko Hamada
    • G11B724
    • G11B7/24079G11B7/24076
    • An optical information medium, comprising: a transparent substrate for penetrating a recording laser beam therethrough; a recording layer being formed on the transparent substrate; and a reflective layer being formed on the recording layer and for reflecting reproducing laser beam thereupon. A numerical aperture of an objective lens of an optical pickup for irradiating the recording laser beam on the recording layer is approximately 0.65, and the numerical aperture of an objective lens of the optical pickup for irradiating the recording laser beam on the reflection layer is approximately 0.60. An inclination angle &thgr; at both edges of the groove for tracking, being formed spiral-like on the surface of the transparent substrate on which the recording layer is formed, with respect to the main surface of the transparent substrate is selected from 55° to 75°. An index &agr;, being expressed by 1−Dr/Ds when assuming that depth of the groove on the transparent substrate is Ds and depth of the recording layer at position of said groove is Dr, is selected from 0.2 to 0.4. Further, full width at half maximum of the groove on the transparent substrate is selected to be from one-third (⅓) to a half (½) of the pitch p of the groove. With this optical information medium, it is possible to record high density signals as signals being readable optically, as well as to record them with stability.
    • 一种光学信息介质,包括:用于穿过其中的记录激光束的透明基板; 在所述透明基板上形成记录层; 并且反射层形成在记录层上并用于反射再现激光束。 用于将记录激光束照射在记录层上的用于照射记录激光束的光学拾取器的物镜的数值孔径大约为0.65,用于将记录激光束照射在反射层上的光学拾取器的物镜的数值孔径大约为0.60 。 在透明基板的形成有透明基板的表面上相对于透明基板的主表面形成螺旋状的用于跟踪的凹槽的两个边缘处的倾斜角θ选自55°至75° °。 当假定透明基板上的凹槽的深度为Ds并且在所述凹槽的位置处的记录层的深度为Dr时,由1-Dr / Ds表示的索引α选自0.2至0.4。 此外,透明基板上的凹槽的最大半峰宽选择为凹槽的间距p的三分之一(1/3)至1/2(1/2)。 利用该光学信息介质,可以将高密度信号记录为可光学读取的信号,并且可以稳定地记录它们。
    • 5. 发明授权
    • Optical information medium
    • 光信息媒体
    • US5895697A
    • 1999-04-20
    • US955156
    • 1997-10-21
    • Toshiaki TajimaYuji TomizawaRyou NegishiEmiko HamadaToru Fujii
    • Toshiaki TajimaYuji TomizawaRyou NegishiEmiko HamadaToru Fujii
    • G11B5/62B32B3/00
    • G11B5/62Y10S428/913Y10S430/146Y10T428/21
    • An optical information medium comprises a first disc forming information recording layer on a main surface thereof, a second disc being bonded to the first disc at the surface where the information recording layer is formed by way of an adhesive. A hydrophilic resin film is formed on the surface of the disc at the inner peripheral side extending from the center hole to the information non-recording area. The hydrophilic resin film is damp and is rough compared with the other portion formed of non-hydrophilic resin, and it is elastic. The characters, patterns or designs can be printed on the optical information medium using water-base ink, etc. after manufacturing the optical information medium. Further, the hydrophilic resin film is formed on the disc at the portion outside the information recording area. Further, when the hydrophilic resin film is formed, the surface of the inner and outer peripheral portions of the optical information medium protuberates slightly thicker than other portion so that the fats of the fingers is hardly stuck to the recording surface of the optical information medium even if the inner and outer peripheral portions of the disc is grasped by hand.
    • 光学信息介质包括在其主表面上的第一盘形成信息记录层,在通过粘合剂形成信息记录层的表面处将第二盘结合到第一盘。 在从中心孔延伸到信息非记录区域的内周侧的盘的表面上形成亲水性树脂膜。 与非亲水性树脂形成的其它部分相比,亲水性树脂膜是潮湿的,并且是弹性的。 在制造光学信息介质之后,可以使用水基油墨等在光学信息介质上印刷字符,图案或设计。 此外,在信息记录区域外的部分的盘上形成亲水性树脂膜。 此外,当形成亲水性树脂膜时,光学信息介质的内周和外周部分的表面突出比其它部分稍厚,使得手指的脂肪几乎不粘附到光信息介质的记录表面,甚至 如果用手握住盘的内外周部分。
    • 6. 发明授权
    • Optical information medium
    • 光信息媒体
    • US06493312B1
    • 2002-12-10
    • US09351845
    • 1999-07-13
    • Ryou NegishiToshiaki TajimaToru FujiiEmiko Hamada
    • Ryou NegishiToshiaki TajimaToru FujiiEmiko Hamada
    • G11B724
    • G11B7/00745G11B7/24G11B7/24079G11B7/24085
    • An optical information medium is made up of a transparent substrate for a reproducing laser beam to penetrate therethrough, a recording layer formed on the transparent substrate and a reflective layer for reflecting the reproducing laser beam thereupon, thereby enabling the recording of optically readable signals by a recording laser beam incident upon the transparent substrate. This optical information medium has a spiral-like tracking guide on a side surface of the transparent substrate, on which the recording layer is formed, and on lands defined between the spiral-like tracking guide are formed land pre pits indicative of the sector information, including the address and so on, wherein the length of the land pre pits is selected to be from 50% to 83% of the length of the minimum pit and to be from 1.5 to 2.5 times the length of the channel clock. Also, the film thickness of the recording layer in the area of the land pre pits is selected to differ from the film thickness of the recording layer in the area of the tracking guide.
    • 光学信息介质由用于再现激光束透过的透明基板,形成在透明基板上的记录层和用于反射其上的再现激光束的反射层组成,从而能够通过光学可读信号记录光学可读信号 记录入射到透明基板上的激光束。 该光学信息介质在透明基板的形成有记录层的侧面上具有螺旋形跟踪引导件,并且在螺旋状跟踪引导件之间形成的焊盘上形成指示扇区信息的焊盘预先凹坑, 包括地址等,其中,土地预制坑的长度被选择为最小坑的长度的50%至83%,并且是通道时钟的长度的1.5至2.5倍。 此外,选择区域预凹坑区域中的记录层的膜厚度与跟踪引导件的区域中的记录层的膜厚度不同。
    • 8. 发明授权
    • Optical information medium
    • 光信息媒体
    • US06445676B1
    • 2002-09-03
    • US08965875
    • 1997-11-07
    • Toru FujiiYuji TomizawaEmiko Hamada
    • Toru FujiiYuji TomizawaEmiko Hamada
    • G11B370
    • G11B23/40G11B7/24024G11B7/2467G11B7/2472G11B7/2531G11B7/2533G11B7/2534G11B7/2535G11B7/256G11B7/2585G11B7/2595G11B23/0042
    • An optical information medium comprises a pair of discs which are bonded to each other, an optical recording layer provided on at least one of the discs, and a reflecting layer formed on an upper side of the optical recording layer. The optical information medium further includes an adhesive for bonding the pair of discs provided on the reflecting layer, wherein the adhesive has a thickness ranging from 10 to 80 &mgr;m. A protecting layer is provided on the upper side of the reflecting layer wherein the pair of discs may be bonded by the protecting layer. The optical recording layer, reflecting layer and protecting layer may be directly sequentially provided on the disc but another substrate layer may be inserted between these layers. There is employed, as the adhesive, those including a reactive curing resin or a hot melt material, and it is preferable that the shrinkage rate of the adhesive be less than 15%.
    • 光学信息介质包括彼此粘合的一对光盘,设置在至少一个光盘上的光学记录层以及形成在光学记录层的上侧上的反射层。 光学信息介质还包括用于粘合设置在反射层上的一对光盘的粘合剂,其中粘合剂具有10至80μm的厚度。 保护层设置在反射层的上侧,其中该一对光盘可被保护层粘合。 光记录层,反射层和保护层可以直接依次设置在盘上,而另一个基底层可以插入在这些层之间。 作为粘合剂使用包括反应性固化树脂或热熔性材料的粘合剂,并且粘合剂的收缩率优选小于15%。
    • 10. 发明授权
    • Optical information medium
    • 光信息媒体
    • US07194751B2
    • 2007-03-20
    • US10198374
    • 2002-07-18
    • Toru FujiiYuji TomizawaEmiko Hamada
    • Toru FujiiYuji TomizawaEmiko Hamada
    • G11B3/70G11B5/84
    • G11B23/40G11B7/24024G11B7/2467G11B7/2472G11B7/2531G11B7/2533G11B7/2534G11B7/2535G11B7/256G11B7/2585G11B7/2595G11B23/0042
    • An optical information medium comprises a pair of discs which are bonded to each other, an optical recording layer provided on at least one of the discs, and a reflecting layer formed on an upper side of the optical recording layer. The optical information medium further includes an adhesive for bonding the pair of discs provided on the reflecting layer, wherein the adhesive has a thickness ranging from 10 to 80 μm. A protecting layer is provided on the upper side of the reflecting layer wherein the pair of discs may be bonded by the protecting layer. The optical recording layer, reflecting layer and protecting layer may be directly sequentially provided on the disc but another substrate layer may be inserted between these layers. There is employed, as the adhesive, those including a reactive curing resin or a hot melt material, and it is preferable that the shrinkage rate of the adhesive be less than 15%.
    • 光学信息介质包括彼此粘合的一对光盘,设置在至少一个光盘上的光学记录层以及形成在光学记录层的上侧上的反射层。 光学信息介质还包括用于粘合设置在反射层上的一对光盘的粘合剂,其中粘合剂具有10至80μm的厚度。 保护层设置在反射层的上侧,其中该一对光盘可被保护层粘合。 光记录层,反射层和保护层可以直接依次设置在盘上,而另一个基底层可以插入在这些层之间。 作为粘合剂使用包括反应性固化树脂或热熔性材料的粘合剂,并且粘合剂的收缩率优选小于15%。