公开(公告)号：US5580633A

公开(公告)日：1996-12-03

申请号：US277363

申请日：1994-07-19

申请人： Tsuneo Kuwahara ,  Hiroyuki Endo ,  Isamu Kuribayashi ,  Hideki Hirata

发明人： Tsuneo Kuwahara ,  Hiroyuki Endo ,  Isamu Kuribayashi ,  Hideki Hirata

IPC分类号： C23C14/06 ,  G11B11/10 ,  G11B11/105 ,  G11B5/72

CPC分类号： G11B11/10586 ,  G11B11/1058 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/26 ,  Y10T428/265 ,  Y10T428/30

摘要： A magneto-optical recording disc adapted for magneto-optical recording in the magnetic field modulation system by means of a magnetic head in continuous contact with the disc includes a recording layer on a substrate and a wear resistant resinous coating thereon. The coating is formed of a resin containing carbon particles having a mean particle size of 1 to 15 .mu.m. The magnetic head is in sliding contact with the surface of the coating during operation. The coating is effective for reducing friction with the magnetic head and retains such reduced friction over a long time.

摘要翻译： 适于在磁场调制系统中通过与盘连续接触的磁头进行磁光记录的磁光记录盘包括在基底上的记录层和其上的耐磨树脂涂层。 涂层由含有平均粒径为1〜15μm的碳粒子的树脂形成。 在操作期间磁头与涂层的表面滑动接触。 该涂层对于减少与磁头的摩擦是有效的，并且在长时间内保持这种减少的摩擦。

公开(公告)号：US5279877A

公开(公告)日：1994-01-18

申请号：US935114

申请日：1992-08-27

申请人： Ryota Uchiyama ,  Hiroyuki Endo ,  Isamu Kuribayashi ,  Shin-ichi Tezuka ,  Tsuneo Kuwahara ,  Hideki Hirata ,  Setsuko Shibuya

发明人： Ryota Uchiyama ,  Hiroyuki Endo ,  Isamu Kuribayashi ,  Shin-ichi Tezuka ,  Tsuneo Kuwahara ,  Hideki Hirata ,  Setsuko Shibuya

IPC分类号： C09D127/18 ,  G11B5/72 ,  G11B5/82 ,  G11B11/105 ,  B32B3/02

CPC分类号： G11B11/10584 ,  C09D127/18 ,  G11B5/72 ,  G11B5/82 ,  Y10T428/254 ,  Y10T428/3154 ,  Y10T428/31544

摘要： A protective coating made of resin, preferably a radiation curable resin containing fluoroplastic fine particles having a low surface energy is provided in the form of the uppermost layer facing a magnetic head, thereby improving the frictional properties and durability of a magneto-optical disc that is used with a magnetic field modulation system in which the magnetic head comes in constant contact therewith.

摘要翻译： 提供由树脂制成的保护涂层，优选为包含具有低表面能的氟塑料微粒的可辐射固化树脂，其形式为面向磁头的最上层，从而改善了磁光盘的摩擦性能和耐久性 与其中磁头恒定接触的磁场调制系统一起使用。

公开(公告)号：US5604005A

公开(公告)日：1997-02-18

申请号：US322421

申请日：1994-10-13

申请人： Hiroyuki Endo ,  Tsuyoshi Komaki ,  Hideki Hirata ,  Isamu Kuribayashi

发明人： Hiroyuki Endo ,  Tsuyoshi Komaki ,  Hideki Hirata ,  Isamu Kuribayashi

IPC分类号： G11B11/10 ,  G11B7/24 ,  G11B7/254 ,  G11B11/105 ,  G11B5/66

CPC分类号： G11B7/2542 ,  G11B11/10586 ,  G11B11/1058 ,  G11B2007/24306 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B7/24 ,  G11B7/2534 ,  G11B7/2585 ,  Y10S428/90 ,  Y10T428/265

摘要： A magneto-optical disc comprising a recording layer and a protective coating on a substrate is operated for magneto-optical recording in a magnetic field modulation mode such that the protective coating is in sliding contact with a magnetic head. The protective coating is obtained by curing with radiation a polymerizable composition which contains a fatty acid ester and radiation-curable compounds including a monofunctional (meth)acrylic monomer, a polyfunctional (meth)acrylic monomer, and optionally, an acrylic oligomer.

摘要翻译： 在磁场调制模式中操作包括记录层和保护涂层的磁光盘，以使得保护涂层与磁头滑动接触。 通过辐射固化含有脂肪酸酯的可聚合组合物和包括单官能（甲基）丙烯酸单体，多官能（甲基）丙烯酸单体和任选的丙烯酸低聚物的可辐射固化的化合物）来获得保护涂层。

公开(公告)号：US5568466A

公开(公告)日：1996-10-22

申请号：US503084

申请日：1995-07-17

申请人： Tsuyoshi Komaki ,  Hiroyuki Endo ,  Hideki Hirata ,  Isamu Kuribayashi

发明人： Tsuyoshi Komaki ,  Hiroyuki Endo ,  Hideki Hirata ,  Isamu Kuribayashi

IPC分类号： G11B5/60 ,  G11B11/10 ,  G11B11/105 ,  G11B21/21 ,  G11B11/00 ,  G11B3/70

CPC分类号： G11B11/10586 ,  G11B11/10584

摘要： A magneto-optical disc includes a recording layer (4) and a protective film (7) of radiation-cured resin on a substrate (2). Information is written in the recording layer with the aid of a magnetic head in sliding contact with the disc. In a first form, when the protective film is subject to a micro-vibration scratch test by setting the disc in a thin film scratch tester equipped with a diamond indentor having a radius of curvature R of up to 50 .mu.m, the relationship: 0.8.ltoreq.L/R.sup.2 .ltoreq.2.7 is met wherein L is the critical load (N.m) under which the thin film is scratched. In a second form, the protective film has a dynamic modulus of 5.0.times.10.sup.9 to 4.0.times.10.sup.10 dyn/cm.sup.2 at 100.degree. C. The disc is highly durable.

摘要翻译： 磁光盘包括在基板（2）上的记录层（4）和辐射固化树脂的保护膜（7）。 借助于与盘滑动接触的磁头将信息写入记录层。 在第一种形式中，当通过将该盘设置在具有曲率半径R至多为50μm的金刚石压痕器的薄膜划痕试验机中进行微振动划痕试验时，保护膜的关系为：0.8 满足

公开(公告)号：US5578355A

公开(公告)日：1996-11-26

申请号：US400192

申请日：1995-03-03

申请人： Hideki Hirata ,  Hiroyuki Endo ,  Isamu Kuribayashi ,  Tsuyoshi Komaki

发明人： Hideki Hirata ,  Hiroyuki Endo ,  Isamu Kuribayashi ,  Tsuyoshi Komaki

IPC分类号： C08K5/10 ,  C09D201/00 ,  G11B5/72 ,  G11B5/725 ,  G11B11/10 ,  G11B11/105 ,  G11B5/71

CPC分类号： G11B11/10589 ,  G11B11/10584 ,  G11B5/72 ,  G11B5/725 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/249978 ,  Y10T428/249979 ,  Y10T428/249995 ,  Y10T428/265

摘要： A magneto-optical disc includes a substrate, a recording layer, and a protective coating comprised of a resin and a lubricant. The disc is operated for magneto-optical recording in a magnetic field modulation mode such that the protective coating is in sliding contact with a magnetic head. The lubricant is a higher fatty acid ester R.sup.1 --COO--R.sup.2 wherein R.sup.1 is a saturated or unsaturated aliphatic C.sub.10 -C.sub.30 hydrocarbon residue, and R.sup.2 is a saturated or unsaturated aliphatic C.sub.10 -C.sub.30 hydrocarbon residue. Alternatively, the protective coating is formed by curing with radiation a composition containing a lubricant and a radiation-curable compound such that micropores are locally formed in or near the outer surface of the protective coating, the lubricant being distributed in the micropores. In either case, the protective coating is effective for minimizing friction with the magnetic head.

摘要翻译： 磁光盘包括基板，记录层和由树脂和润滑剂组成的保护涂层。 该盘用于磁场调制模式中的磁光记录，使得保护涂层与磁头滑动接触。 润滑剂是高级脂肪酸酯R1-COO-R2，其中R1是饱和或不饱和脂族C10-C30烃残基，R2是饱和或不饱和脂肪族C 10 -C 30烃残基。 或者，通过用辐射固化含有润滑剂和可辐射固化化合物的组合物形成保护涂层，使得微孔局部形成在保护涂层的外表面中或其附近，润滑剂分布在微孔中。 在任一情况下，保护涂层对于最小化与磁头的摩擦是有效的。

公开(公告)号：US06249509B1

公开(公告)日：2001-06-19

申请号：US08533740

申请日：1995-09-26

申请人： Hideki Hirata ,  Hajime Utsunomiya ,  Isamu Kuribayashi ,  Hiroshi Tanabe

发明人： Hideki Hirata ,  Hajime Utsunomiya ,  Isamu Kuribayashi ,  Hiroshi Tanabe

IPC分类号： G11B724

CPC分类号： G11B7/24097 ,  G11B7/2403 ,  G11B7/24053

摘要： The invention provides an optical disc comprising a circular glass substrate (2) having information-carrying means (3) on one major surface. A protective member (4) of a resin includes a circular flat portion (42) and an annular rim (41) extending perpendicular from the periphery of the flat portion (42). The glass substrate (2) is integrally joined to the protective member (4) such that the information-carrying means (3) of the glass substrate (2) may face the covering portion (42) of the protective member (4). The outer side of the glass substrate (2) is surrounded by the protective member rim (41) to leave a shock absorbing space therebetween. The invention prevents the glass substrate from failure at its corner when impact is applied to the disc.

摘要翻译： 本发明提供了一种光盘，其包括在一个主表面上具有信息传送装置（3）的圆形玻璃基板（2）。 树脂的保护构件（4）包括圆形平坦部分（42）和从平坦部分（42）的周边垂直延伸的环形边缘（41）。 玻璃基板（2）与保护构件（4）一体地接合，使得玻璃基板（2）的信息传送装置（3）可面向保护构件（4）的覆盖部分（42）。 玻璃基板（2）的外侧被保护构件边缘（41）包围，在其间留有减震空间。 本发明防止玻璃基板在对盘施加冲击时在其拐角处发生故障。

公开(公告)号：US5936934A

公开(公告)日：1999-08-10

申请号：US917225

申请日：1997-08-25

申请人： Isamu Kuribayashi ,  Hideki Hirata ,  Akira Itoga

发明人： Isamu Kuribayashi ,  Hideki Hirata ,  Akira Itoga

IPC分类号： G11B7/24 ,  G11B7/253 ,  G11B7/257

CPC分类号： G11B7/2533 ,  G11B7/256 ,  G11B2007/24304 ,  G11B7/2433 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2578 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/2595

摘要： An optical disc is constructed by joining a pair of resin substrates through an adhesive layer so that information carrying means is disposed inside. The resin substrate has a diameter-to-thickness ratio d/t.gtoreq.180. The adhesive layer has a Young's modulus of 0.1-1 kgf/mm.sup.2 at 20.degree. C. and a mechanical dissipation factor (tan.delta.) of 0.6-5.0 at 20.degree. C. The adhesive layer is formed of a hot melt adhesive, pressure-sensitive adhesive, room temperature curable adhesive or ultraviolet curable adhesive. The disc is resistant to both heat and vibration.

摘要翻译： 通过粘合层将一对树脂基板连接起来构成光盘，以便将信息传送装置设置在内部。 树脂基板的直径 - 厚度比d / t> = 180。 粘合剂层在20℃下的杨氏模量为0.1-1kgf / mm 2，20℃下的机械损耗因子（tanδ）为0.6-5.0。粘合剂层由热熔粘合剂形成， 敏感粘合剂，室温可固化粘合剂或紫外线固化粘合剂。 光盘耐热和振动。

公开(公告)号：US06091503A

公开(公告)日：2000-07-18

申请号：US327505

申请日：1999-06-08

申请人： Isamu Kuribayashi ,  Hideki Hirata

发明人： Isamu Kuribayashi ,  Hideki Hirata

IPC分类号： G01B11/08 ,  G01B11/02 ,  G01B11/255 ,  G01M11/00 ,  G01N3/06 ,  G01N3/16 ,  G11B7/0037 ,  G11B7/26 ,  G11B23/00 ,  G01N21/84 ,  G01B11/04

CPC分类号： G11B23/0021 ,  G01B11/028 ,  G01B11/255 ,  G01N3/165 ,  G11B7/00375 ,  G11B7/26 ,  G01N2203/0641

摘要： A mechanical property such as axial acceleration of an injection molded resin disc substrate or an optical disc comprising the same is determined by measuring a variation in radius or diameter of the substrate or disc in its circumferential direction, and determining the mechanical property of the substrate or disc from the measurement.

摘要翻译： 通过测量基板或圆盘的圆周方向的半径或直径的变化来确定注塑树脂盘基片的轴向加速度或包括其的光盘的机械特性，并且确定基片的机械性能或 光盘从测量。

公开(公告)号：US4737408A

公开(公告)日：1988-04-12

申请号：US897087

申请日：1986-08-18

申请人： Tsuneo Kuwahara ,  Masatoshi Nakayama ,  Hideki Hirata

发明人： Tsuneo Kuwahara ,  Masatoshi Nakayama ,  Hideki Hirata

IPC分类号： G11B7/243 ,  G11B7/254 ,  G11B11/105 ,  G11B7/24

CPC分类号： G11B7/252 ,  G11B11/10582 ,  G11B7/254 ,  G11B7/2575 ,  G11B2007/24306 ,  G11B7/2533 ,  Y10S428/90 ,  Y10T428/264 ,  Y10T428/265 ,  Y10T428/31692 ,  Y10T428/31855

摘要： In a magneto-optical recording medium comprising a perpendicular magnetizable thin film layer formed from an amorphous rare earth metal-transition metal alloy on a substrate with or without an intermediate layer, and a first protective layer formed from a plasma-polymerized film on the magnetizable layer; a second protective layer is formed on the first protective layer by curing a radiation-curable compound coating and/or an undercoat layer of a plasma-polymerized film is formed on the substrate in order to improve the moisture proofness of the magnetic layer. The substrate may be plasma treated to improve adherence. Covering the overall outside surface of the medium with a cured film of a radiation-curable compound ensures best shelf stability.

摘要翻译： 在包括在具有或不具有中间层的基板上由无定形稀土金属 - 过渡金属合金形成的垂直可磁化薄膜层的磁光记录介质中，以及由可磁化的等离子体聚合膜形成的第一保护层 层; 通过固化可辐射固化的化合物涂层在第一保护层上形成第二保护层和/或等离子体聚合膜的底涂层，以提高磁性层的防潮性。 可以对衬底进行等离子体处理以改善粘附性。 用可辐射固化化合物的固化膜覆盖介质的整个外表面确保了最佳的储存稳定性。

公开(公告)号：US20120102509A1

公开(公告)日：2012-04-26

申请号：US13277458

申请日：2011-10-20

申请人： Motohiro INOUE ,  Takashi Kikukawa ,  Atsuko Kosuda ,  Tomoki Ushida ,  Hideki Hirata

发明人： Motohiro INOUE ,  Takashi Kikukawa ,  Atsuko Kosuda ,  Tomoki Ushida ,  Hideki Hirata

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B2007/24314 ,  G11B2007/2432

摘要： The multilayer optical recording medium with six or more recording and reading layers disposed one above the other has at least two or more recording and reading layer groups. The recording and reading layer groups each include a plurality of recording and reading layers successively disposed one above the other. The reflectance of each of the recording and reading layers in a stacked state decreases in the order from a front side near a light incident surface toward a back side far from the light incident surface. A recording and reading layer nearest the front side among the recording and reading layers in the recording and reading layer group nearer the back side has a reflectance in a stacked state higher than that of a recording and reading layer nearest the back side among the recording and reading layers in the recording and reading layer group nearer the front side.

摘要翻译： 具有六个或更多个记录和读取层的多层光记录介质具有至少两个或更多个记录和读取层组。 记录和读取层组各自包括相继地彼此排列的多个记录和读取层。 层叠状态下的各记录层和读取层的反射率从靠近光入射面的前侧向远离光入射面的背面逐渐减小。 记录和读取层组中靠近背面的记录和读取层之间的记录和读取层的记录和读取层的堆叠状态的反射率高于记录和记录层中最靠背侧的记录和读取层的反射率， 阅读层组在阅读层组中靠近正面。