公开(公告)号：US06728198B2

公开(公告)日：2004-04-27

申请号：US10162300

申请日：2002-06-04

申请人： Toru Fujii ,  Toshiaki Tajima ,  Yuji Tomizawa ,  Ryou Negishi ,  Emiko Hamada

发明人： Toru Fujii ,  Toshiaki Tajima ,  Yuji Tomizawa ,  Ryou Negishi ,  Emiko Hamada

IPC分类号： G11B724

CPC分类号： G11B7/24079 ,  G11B7/24076

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06504815B1

公开(公告)日：2003-01-07

申请号：US09504267

申请日：2000-02-15

申请人： Toru Fujii ,  Emiko Hamada

发明人： Toru Fujii ,  Emiko Hamada

IPC分类号： G11B1100

CPC分类号： G11B7/24085 ,  G11B7/00745 ,  G11B7/263

摘要： An optical information medium is made up of a transparent substrate for a recording laser beam to penetrate therethrough, a recording layer formed on the transparent substrate, and a reflective layer for reflecting reproducing laser beam formed thereupon enabling the recording of optically readable signals by means of an incident recording laser from the transparent substrate. The transparent substrate has spiral-like tracking guides on the surface of the transparent substrate on which is formed the recording layer, and pre-pits indicative of address information are formed on a land portion defined between the tracking guides. The pre-pits are formed shifted from a center of the land. With this construction, the pre-pits open to a side of the tracking guide neighboring the land. With this, it is possible to read out address signals from the pre-pits with certainty when recording, and also to suppress errors due to mixing between the signals obtained from the pre-pits indicative of the address information and the recorded data read out from the pits on the tracking guides when reading the recorded optically readable signals.

摘要翻译： 光信息介质由用于穿透其的记录激光束的透明基板，形成在透明基板上的记录层和用于反射在其上形成的再现激光束反射的反射层构成，使得能够通过以下方式记录光学可读信号： 来自透明基板的入射记录激光。 透明基板在其上形成记录层的透明基板的表面上具有螺旋形跟踪引导件，并且在跟踪引导件之间限定的台面部分上形成指示地址信息的预凹坑。 预制坑从地面中心转移。 通过这种结构，预留凹坑向邻近该陆地的跟踪指南的一侧开放。 由此，可以在记录时确定地读出来自预制凹坑的地址信号，并且还能够抑制由于从表示地址信息的预制坑获得的信号与从 当读取记录的光学可读信号时，跟踪引导件上的凹坑。

公开(公告)号：US06493312B1

公开(公告)日：2002-12-10

申请号：US09351845

申请日：1999-07-13

申请人： Ryou Negishi ,  Toshiaki Tajima ,  Toru Fujii ,  Emiko Hamada

发明人： Ryou Negishi ,  Toshiaki Tajima ,  Toru Fujii ,  Emiko Hamada

IPC分类号： G11B724

CPC分类号： G11B7/00745 ,  G11B7/24 ,  G11B7/24079 ,  G11B7/24085

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06445676B1

公开(公告)日：2002-09-03

申请号：US08965875

申请日：1997-11-07

申请人： Toru Fujii ,  Yuji Tomizawa ,  Emiko Hamada

发明人： Toru Fujii ,  Yuji Tomizawa ,  Emiko Hamada

IPC分类号： G11B370

CPC分类号： G11B23/40 ,  G11B7/24024 ,  G11B7/2467 ,  G11B7/2472 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2535 ,  G11B7/256 ,  G11B7/2585 ,  G11B7/2595 ,  G11B23/0042

摘要： 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%.

摘要翻译： 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％。

公开(公告)号：US06291045B1

公开(公告)日：2001-09-18

申请号：US09354908

申请日：1999-07-16

申请人： Toshiaki Tajima ,  Toru Fujii ,  Yuji Tomizawa ,  Emiko Hamada

发明人： Toshiaki Tajima ,  Toru Fujii ,  Yuji Tomizawa ,  Emiko Hamada

IPC分类号： B32B302

CPC分类号： G11B7/2495 ,  G11B7/246 ,  G11B7/2467 ,  G11B7/2472 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2595 ,  G11B2007/24612 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21

摘要： An optical information recording medium having a recording layer comprising a dye layer containing a trimethine-based cyanine dye having nitro group attached to a benzene ring or to a naphthalene ring, both being bonded to indole ring, is capable of minimizing the second peak in relative to the main peak shown in FIG. 1, thus enabling the spectrum consisting of a main peak and a second peak to become sharp. The recording layer is capable of performing the recording and reading with a laser beam having a wavelength falling within a range of 620 nm to 690 nm.

摘要翻译： 具有包含染料层的记录层的光学信息记录介质能够使相对于吲哚环结合的苯环或萘环上具有硝基的含有三甲基的花青染料的染料层能够最小化第二峰 到图1所示的主峰。 1，从而使得由主峰和第二峰组成的谱变得尖锐。 记录层能够用波长在620nm至690nm的范围内的激光束进行记录和读取。

公开(公告)号：US5976658A

公开(公告)日：1999-11-02

申请号：US958372

申请日：1997-10-27

申请人： Yuji Tomizawa ,  Toru Fujii ,  Emiko Hamada

发明人： Yuji Tomizawa ,  Toru Fujii ,  Emiko Hamada

IPC分类号： G11B7/246 ,  G11B7/2472 ,  G11B7/248 ,  G11B7/253 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2535 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/2595 ,  B32B3/00

CPC分类号： G11B7/2472 ,  C09B23/06 ,  C09B23/083 ,  C09B67/0033 ,  G11B2007/24612 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2535 ,  G11B7/256 ,  G11B7/2585 ,  G11B7/2595 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21 ,  Y10T428/31678

摘要： An optical information recording medium provided on a substrate with a recording layer including a dye layer; wherein the dye layer contains a cyanine dye; and the recording layer enables a recording and reproducing to be effected with a laser beam having a wavelength falling within a range of 620 nm to 690 nm; a refractive index "n" of the recording layer being in a range of 1.6 to 4.0 and an extinction coefficient "k" of the a recording layer being in a range of 0.01 to 0.45 when the laser beam having the wavelength is applied thereto; and the recording layer exhibiting a maximum absorption peak wavelength and a second largest absorption peak wavelength falling within a range of 500 nm to 655 nm as measured by means of a visible ultraviolet spectrometer. The dye may be a trimethine-base cyanine dye.

摘要翻译： 一种光学信息记录介质，其设置在具有包括染料层的记录层的基板上; 其中所述染料层含有花青染料; 并且记录层能够利用波长在620nm至690nm的范围内的激光束进行记录和再现; 当施加具有波长的激光束时，记录层的折射率“n”在1.6至4.0的范围内，并且记录层的消光系数“k”在0.01至0.45的范围内; 并且通过可见光紫外光谱仪测量，所述记录层具有落在500nm至655nm范围内的最大吸收峰波长和第二最大吸收峰波长。 染料可以是三聚氰胺基花青染料。

公开(公告)号：US06711118B1

公开(公告)日：2004-03-23

申请号：US09506917

申请日：2000-02-18

申请人： Toshiaki Tajima ,  Toru Fujii ,  Yuji Tomizawa ,  Ryou Negishi ,  Emiko Hamada

发明人： Toshiaki Tajima ,  Toru Fujii ,  Yuji Tomizawa ,  Ryou Negishi ,  Emiko Hamada

IPC分类号： G11B724

CPC分类号： G11B7/24076 ,  G11B7/24079

摘要： An optical information recording medium provides a high reflectance of a laser beam and thus enables an accurate tracking servo. The optical information recording medium, for recording optically readable signals thereon through the use of a recording laser beam, includes a light transmitting substrate, a tracking groove formed on a surface of the light transmitting substrate, a land formed between two neighboring tracks of the tracking groove, a recording layer formed on a surface of the light transmitting substrate on which the tracking groove and the land are provided, and a reflective layer formed on the recording layer for reflecting the recording laser beam. A top width D of the land is arranged to be within the range of about 0.30≦D≦0.45 &mgr;m.

摘要翻译： 光学信息记录介质提供激光束的高反射率，从而能够进行精确的跟踪伺服。 用于通过使用记录激光束在其上记录光可读信号的光学信息记录介质包括透光衬底，形成在透光衬底的表面上的跟踪槽，形成在跟踪的两个相邻迹道之间的焊盘 槽，形成在其上设置有跟踪槽和焊盘的光透射基板的表面上的记录层，以及形成在记录层上用于反射记录激光束的反射层。 土地的顶部宽度D被布置在约0.30 <= D <= 0.45MUM的范围内。

公开(公告)号：US5080946A

公开(公告)日：1992-01-14

申请号：US549114

申请日：1990-07-06

申请人： Yosikazu Takagisi ,  Kunihiko Ootaguro ,  Emiko Hamada ,  Toru Fujii

发明人： Yosikazu Takagisi ,  Kunihiko Ootaguro ,  Emiko Hamada ,  Toru Fujii

IPC分类号： G03G5/04 ,  G11B7/24

CPC分类号： G11B7/24 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/24876 ,  Y10T428/24893

摘要： An optical information recording medium comprising a light transmitting substrate having a spiral pregroove formed on its surface, a light absorptive layer of a coloring matter formed on the substrate directly or with other layer interposed therebetween, and a light reflective layer made of a metal film formed on the light absorptive layer directly or with other layer interposed therebetween, wherein .DELTA.S.ltoreq.0.3 wherein .DELTA.S is the optical phase difference represented by .DELTA.S=2d.sub.sub {n.sub.sub -n.sub.abs (1-d.sub.abs /d.sub.sub)}/.lambda. wherein d.sub.sub is the depth of the layer boundary on the substrate side of the light absorptive layer at the portion corresponding to the pregroove, d.sub.abs is the depth of the layer boundary on the light absorptive layer side of the light reflective layer at the portion corresponding to the pregroove, n.sub.sub is the real part of the complex refractive index of the substrate and any layer present on the substrate side of the light absorptive layer, n.sub.abs is the real part of the complex refractive index of the light absorptive layer, and .lambda. is the wavelength of a laser beam.

公开(公告)号：US07194751B2

公开(公告)日：2007-03-20

申请号：US10198374

申请日：2002-07-18

申请人： Toru Fujii ,  Yuji Tomizawa ,  Emiko Hamada

发明人： Toru Fujii ,  Yuji Tomizawa ,  Emiko Hamada

IPC分类号： G11B3/70 ,  G11B5/84

CPC分类号： G11B23/40 ,  G11B7/24024 ,  G11B7/2467 ,  G11B7/2472 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2535 ,  G11B7/256 ,  G11B7/2585 ,  G11B7/2595 ,  G11B23/0042

摘要： 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%.

摘要翻译： 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％。

公开(公告)号：US06452899B1

公开(公告)日：2002-09-17

申请号：US09340212

申请日：1999-06-25

申请人： Toru Fujii ,  Toshiaki Tajima ,  Yuji Tomizawa ,  Ryou Negishi ,  Emiko Hamada

发明人： Toru Fujii ,  Toshiaki Tajima ,  Yuji Tomizawa ,  Ryou Negishi ,  Emiko Hamada

IPC分类号： G11B724

CPC分类号： G11B7/24079 ,  G11B7/24076

摘要： 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.

摘要翻译： 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。