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1. 发明申请

US20050019608A1 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US20050019608A1
公开(公告)日：2005-01-27
申请号：US10898348
申请日：2004-07-26
申请人： Kong Kim , Kinobu Osakabe , Junichi Horikawa
发明人： Kong Kim , Kinobu Osakabe , Junichi Horikawa
IPC分类号： G11B5/738 , G11B5/65 , G11B5/667 , G11B5/73 , G11B5/68
CPC分类号： G11B5/667 , G11B5/7325
摘要： In a perpendicular magnetic recording medium which includes a substrate (1) of a nonmagnetic material, first and second nonmagnetic underlayers (4 and 5) formed on the substrate, and a perpendicular magnetic recording layer (6) formed on the first and the second nonmagnetic underlayers, the first nonmagnetic underlayer is made of an amorphous nonmagnetic metal material containing a metal element which forms a face-centered cubic (fcc) crystal structure by a simple substance. The second nonmagnetic underlayer is formed on the first nonmagnetic underlayer in contact with the first nonmagnetic underlayer and made of a nonmagnetic material containing a hexagonal close packed structure. The perpendicular magnetic recording layer is formed on the second nonmagnetic underlayer in contact with the second nonmagnetic layer.
摘要翻译：在包括非磁性材料的衬底（1）的垂直磁记录介质中，形成在衬底上的第一和第二非磁性底层（4和5）和形成在第一和第二非磁性材料上的垂直磁记录层（6）底层，第一非磁性底层由含有通过简单物质形成面心立方（fcc）晶体结构的金属元素的非晶非磁性金属材料制成。第二非磁性底层形成在与第一非磁性底层接触的第一非磁性底层上，并由含有六方密堆积结构的非磁性材料制成。垂直磁记录层形成在与第二非磁性层接触的第二非磁性底层上。

2. 发明授权

US07993765B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US07993765B2
公开(公告)日：2011-08-09
申请号：US10898348
申请日：2004-07-26
申请人： Kong Kim , Kinobu Osakabe , Junichi Horikawa
发明人： Kong Kim , Kinobu Osakabe , Junichi Horikawa
IPC分类号： G11B5/667 , G11B5/66
CPC分类号： G11B5/667 , G11B5/7325
摘要： In a perpendicular magnetic recording medium which includes a substrate (1) of a nonmagnetic material, first and second nonmagnetic underlayers (4 and 5) formed on the substrate, and a perpendicular magnetic recording layer (6) formed on the first and the second nonmagnetic underlayers, the first nonmagnetic underlayer is made of an amorphous nonmagnetic metal material containing a metal element which forms a face-centered cubic (fcc) crystal structure by a simple substance. The second nonmagnetic underlayer is formed on the first nonmagnetic underlayer in contact with the first nonmagnetic underlayer and made of a nonmagnetic material containing a hexagonal close packed structure. The perpendicular magnetic recording layer is formed on the second nonmagnetic underlayer in contact with the second nonmagnetic layer.
摘要翻译：在包括非磁性材料的衬底（1）的垂直磁记录介质中，形成在衬底上的第一和第二非磁性底层（4和5）和形成在第一和第二非磁性材料上的垂直磁记录层（6）底层，第一非磁性底层由含有通过简单物质形成面心立方（fcc）晶体结构的金属元素的非晶非磁性金属材料制成。第二非磁性底层形成在与第一非磁性底层接触的第一非磁性底层上，并由含有六方密堆积结构的非磁性材料制成。垂直磁记录层形成在与第二非磁性层接触的第二非磁性底层上。

3. 发明授权

US12094506B2 Magnetic-disk substrate and magnetic disk 有权
公开(公告)号：US12094506B2
公开(公告)日：2024-09-17
申请号：US18165295
申请日：2023-02-06
申请人： Masanobu Itaya , Kinobu Osakabe , Toshio Takizawa
发明人： Masanobu Itaya , Kinobu Osakabe , Toshio Takizawa
IPC分类号： G11B5/82 , G11B5/73
CPC分类号： G11B5/82 , G11B5/73921
摘要： A magnetic-disk substrate has an average value of squares of inclinations that is 0.0025 or less, and a frequency at which squares of inclinations are 0.004 or more is 15% or less, in a case where samples of inclinations on a main surface are obtained at intervals of 10 nm. The main surface is configured to receive at least a magnetic recording layer thereon. The magnetic-disk substrate includes an outer circumferential end portion and an inner circumferential end portion, and the outer circumferential end portion and the inner circumferential end portion have chamfered portions.

4. 发明授权

US08652660B2 Glass substrate for magnetic recording medium and its use 有权
标题翻译：用于磁记录介质的玻璃基板及其用途
公开(公告)号：US08652660B2
公开(公告)日：2014-02-18
申请号：US13331667
申请日：2011-12-20
申请人： Hideki Isono , Kinobu Osakabe , Katsuyuki Iwata , Mikio Ikenishi , Naomi Matsumoto
发明人： Hideki Isono , Kinobu Osakabe , Katsuyuki Iwata , Mikio Ikenishi , Naomi Matsumoto
IPC分类号： C03C3/00 , G11B5/02 , G11B5/65
CPC分类号： G11B5/7315
摘要： An aspect of the present invention relates to a glass substrate for a magnetic recording medium, which is comprised of glass with a glass transition temperature of equal to or greater than 600° C., an average coefficient of linear expansion at 100 to 300° C. of equal to or greater than 70×10−7/° C., a Young's modulus of equal to or greater than 81 GPa, a specific modulus of elasticity of equal to or greater than 30 MNm/kg, and a fracture toughness value of equal to or greater than 0.9 MPa·m1/2.
摘要翻译：本发明的一个方面涉及一种用于磁记录介质的玻璃基板，其由玻璃化转变温度等于或大于600℃的玻璃组成，在100至300℃的平均线性膨胀系数，等于或大于70×10-7 /℃，杨氏模量等于或大于81GPa，比模弹性等于或大于30MNm / kg，断裂韧性值等于或大于0.9MPa·m1 / 2。

5. 发明授权

US08603653B2 Glass for magnetic recording medium substrate, magnetic recording medium substrate and method of manufacturing the same, and magnetic recording medium 有权
标题翻译：磁记录介质基板用玻璃，磁记录介质基板及其制造方法以及磁记录介质
公开(公告)号：US08603653B2
公开(公告)日：2013-12-10
申请号：US12853802
申请日：2010-08-10
申请人： Naomi Matsumoto , Yoichi Hachitani , Kinobu Osakabe
发明人： Naomi Matsumoto , Yoichi Hachitani , Kinobu Osakabe
IPC分类号： C03C3/095 , G11B17/08
CPC分类号： G11B5/7315 , C03C3/087 , C03C3/093 , C03C3/095 , C03C3/097 , G11B5/82 , G11B5/8404
摘要： An aspect of the present invention relates to glass for a magnetic recording medium substrate, which comprises, denoted as molar percentages, 50 to 75 percent of SiO2, 0 to 5 percent of Al2O3, 0 to 3 percent of Li2O, 0 to 5 percent of ZnO, a total of Na2O and K2O of 3 to 15 percent, a total of MgO, CaO, SrO, and BaO of 14 to 35 percent, a total of ZrO2, TiO2, La2O3, Y2O3, Yb2O3, Ta2O5, Nb2O5, and HfO2 of 2 to 9 percent, with a molar ratio of {(MgO+CaO)/(MgO+CaO+SrO+BaO)} falling within a range of 0.85 to 1, and a molar ratio of {Al2O3/(MgO+CaO)} falling within a range of 0 to 0.30.
摘要翻译：本发明的一个方面涉及一种用于磁记录介质基板的玻璃，其包括以摩尔百分数表示的是50％至75％的SiO 2，0至5％的Al 2 O 3，0至3％的Li 2 O，0至5％的 ZnO，总共为3〜15％的Na 2 O和K 2 O，总共为14〜35％的MgO，CaO，SrO和BaO，总共为ZrO 2，TiO 2，La 2 O 3，Y 2 O 3，Yb 2 O 3，Ta 2 O 5，Nb 2 O 5，HfO 2 的2％〜9％，摩尔比{（MgO + CaO）/（MgO + CaO + SrO + BaO）}在0.85〜1的范围内，{Al 2 O 3 /（MgO + CaO） }落在0到0.30的范围内。

6. 发明授权

US6119483A Process for producing glass substrate for information recording medium 失效
标题翻译：信息记录媒体用玻璃基板的制造方法
公开(公告)号：US6119483A
公开(公告)日：2000-09-19
申请号：US999479
申请日：1997-12-29
申请人： Koji Takahashi , Kazuhiko Maeda , Shinji Eda , Jun Ozawa , Katsutoshi Ono , Kinobu Osakabe , Nobuyuki Eto
发明人： Koji Takahashi , Kazuhiko Maeda , Shinji Eda , Jun Ozawa , Katsutoshi Ono , Kinobu Osakabe , Nobuyuki Eto
IPC分类号： C03C17/06 , C03C19/00 , C03C21/00 , C03C23/00 , G11B5/84
CPC分类号： C03C19/00 , C03C17/06 , C03C21/002 , C03C23/0075 , G11B5/8404
摘要： An object of the present invention is to prevent the dhesion of particles such as fine iron powders onto a glass substrate upon the production of a glass substrate for an information recording medium. To attain the above object, any one of the following means is adopted: (1) at least one of the production, inspection, packing and filling steps of the glass substrate for an information recording medium is carried out under a clean atmosphere which does not permit the adhesion of particles; (2) at least a wall surface of a chemical reinforcement tank containing a chemical reinforcement liquid therein and/or said retaining means which is contact with the chemical reinforcement liquid is formed of a stainless alloy having corrosion resistance in a high-temperature region as high as the heating temperature of the chemical reinforcement liquid; (3) a means for trapping fine particles existing in the chemical reinforcement liquid used in the chemical reinforcement step is provided; and (4) the glass substrate is washed with hydrochloric acid.
摘要翻译：本发明的目的是在生产用于信息记录介质的玻璃基板时，防止微细铁粉等颗粒在玻璃基板上的粘附。为了实现上述目的，采用以下方法之一：（1）用于信息记录介质的玻璃基板的生产，检查，包装和填充步骤中的至少一个在不干净的气氛下进行允许颗粒的粘附; （2）至少在其中含有化学增强液体的化学加固槽的壁面和/或与化学增强液体接触的所述保持装置由在高温区域具有高耐腐蚀性的不锈钢合金形成作为化学增强液的加热温度; （3）提供用于捕获存在于化学增强步骤中使用的化学增强液体中的微粒的装置; 和（4）玻璃基板用盐酸洗涤。

7. 发明授权

US08394516B2 Glass substrate for magnetic recording medium and magnetic recording medium 有权
标题翻译：用于磁记录介质和磁记录介质的玻璃基板
公开(公告)号：US08394516B2
公开(公告)日：2013-03-12
申请号：US12941832
申请日：2010-11-08
申请人： Naomi Matsumoto , Kinobu Osakabe , Yoichi Hachitani
发明人： Naomi Matsumoto , Kinobu Osakabe , Yoichi Hachitani
IPC分类号： G11B5/73 , C03C3/087 , C03C3/097
CPC分类号： G11B5/7315 , C03C3/087 , C03C3/095 , C03C3/097
摘要： The present invention relates to recording glass substrates molar percentages: 56-75 SiO2, 1-11 Al2O2, more than 0-4 Li2O, 1-15 Na2O. more than 0 less than 3 K2O, no BaO. total Li2O, Na2O and K2O 6-15, (Li2O Na2O) less than 0.50, {K2O/(Li2O, Na2O and K2O)} equal or less than 0.13, total MgO, CaO and SrO 10-30, MgO and CaO 10-30, {(MgO+CaO)/(MgO+CaO+SrO)} equal or more than 0.86, alkali oxides to alkaline earth oxides equal to or more than 0.50. total ZrO2, TiO2, Y2O3, La2O3, Gd2O3, Nb2O5, and Ta2O5 more than 0 equal to or less than 10, molar ratio {(ZrO2, TiO2, Y2O3, La2O3, Gd2O3, Nb2O5, and Ta2O5)/Al2O2 equal or more than 0.40, Tg equal to or higher than 600° C., average coefficient linear expansion equal or higher than 70×10−7/°C. at 100-300° C. and Young's modulus equal to or higher than 80 GPa.
摘要翻译：本发明涉及记录玻璃基板的摩尔百分比：56-75SiO 2，1-11 Al 2 O 2，大于0-4 Li 2 O，1〜15纳摩尔。超过0小于3 K2O，不含BaO。总Li2O，Na2O和K2O6-15，（Li2O·Na2O）小于0.50，{K2O /（Li2O，Na2O和K2O）}等于或小于0.13，总MgO，CaO和SrO 10-30，MgO和CaO 10- 30，等于或大于0.86的{（MgO + CaO）/（MgO + CaO + SrO）}等于或大于0.50的碱金属氧化物至碱土金属氧化物。等于或等于或等于10的摩尔比{（ZrO 2，TiO 2，Y 2 O 3，La 2 O 3，Gd 2 O 3，Nb 2 O 5和Ta 2 O 5）/ Al 2 O 2的总ZrO 2，TiO 2，Y 2 O 3，La 2 O 3，Gd 2 O 3，Nb 2 O 5和Ta 2 O 5等于或等于10 0.40，Tg等于或高于600℃，平均系数线膨胀等于或高于70×10-7 /℃。在100-300℃，杨氏模量等于或高于80GPa。

8. 发明授权

US08356492B2 Manufacturing of glass 有权
标题翻译：制造玻璃
公开(公告)号：US08356492B2
公开(公告)日：2013-01-22
申请号：US12858781
申请日：2010-08-18
申请人： Kazuhiro Suzuki , Tomonari Hayashi , Shigeru Asanuma , Kinobu Osakabe
发明人： Kazuhiro Suzuki , Tomonari Hayashi , Shigeru Asanuma , Kinobu Osakabe
IPC分类号： C03B5/027
CPC分类号： C03B5/027 , C03B5/16
摘要： Glass is mass-produced with a glass melting furnace comprising a melting tank, at least a wall surface in contact with molten glass thereof being made of refractory material, at least one pair of electrodes placed so as to be in contact with the molten glass held in the melting tank for ohmically heating the molten glass held in the melting tank; and at least one metallic member, at least a surface of which is made of metal and placed so as to be substantially always in contact with the molten glass held in the melting tank. Every metallic member is, when the melting tank is filled with the molten glass, placed so as to be substantially always outside an electric current flowing region which is formed by the electrodes into the molten glass held in the melting tank.
摘要翻译：用玻璃熔炉大量生产玻璃，所述熔化炉包括熔化器，至少与熔融玻璃接触的壁表面由耐火材料制成，至少一对电极放置成与熔融玻璃保持接触在熔化槽中用于欧姆加热熔化槽中保持的熔融玻璃; 以及至少一个金属构件，其至少其表面由金属制成并且被放置成基本上总是与保持在熔化槽中的熔融玻璃接触。每个金属构件是当熔池充满熔融玻璃时，放置成基本上总是在由电极形成的电流流动区域的外侧保持在熔池中的熔融玻璃中。

9. 发明授权

US08119267B2 Glass substrate for magnetic disk and manufacturing method of the same 有权
标题翻译：磁盘用玻璃基板及其制造方法
公开(公告)号：US08119267B2
公开(公告)日：2012-02-21
申请号：US12665623
申请日：2008-09-26
申请人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
发明人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
IPC分类号： C03C3/078 , G11B5/706 , B23Q3/00
CPC分类号： G11B5/7315 , C03C21/002 , G11B5/8404
摘要： A glass substrate for a magnetic disk of the invention is a disk-shaped glass substrate for a magnetic disk where the substrate has a main surface and end face and is subjected to chemical reinforcement treatment, and is characterized in that the penetration length in the uppermost-portion stress layer on the main surface is 49.1 μm or less, and that assuming that an angle between the main surface and compressive stress in the stress profile by a Babinet compensator method is θ, a value y of {12·t·ln(tan θ)+(49.1/t)} is the penetration length in the uppermost-portion stress layer or less.
摘要翻译：本发明的磁盘用玻璃基板是用于磁盘的盘状玻璃基板，其中基板具有主表面和端面并进行化学强化处理，其特征在于，最上面的穿透长度主表面的应力层为49.1μm以下，假设通过Babinet补偿方法在应力分布中的主表面与压缩应力之间的角度为θ，则{12·t·ln （tan＆amp; t s）+（49.1 / t）}是最上部应力层的贯通长度以下。

10. 发明授权

US09564166B2 Magnetic-disk glass substrate and magnetic disk 有权
标题翻译：磁盘玻璃基板和磁盘
公开(公告)号：US09564166B2
公开(公告)日：2017-02-07
申请号：US14424261
申请日：2013-06-28
申请人： Masanobu Itaya , Kinobu Osakabe , Toshio Takizawa
发明人： Masanobu Itaya , Kinobu Osakabe , Toshio Takizawa
IPC分类号： G11B5/82 , G11B5/73
CPC分类号： G11B5/7315 , G11B5/82
摘要： A magnetic-disk glass substrate of the present invention has an average value of squares of inclinations of 0.0025 or less and a frequency at which squares of inclinations are 0.004 or more of 15% or less, in a case where samples of inclinations on a main surface are obtained at intervals of 10 nm.
摘要翻译：在本发明的磁盘玻璃基板中，在主体上倾斜的样本的情况下，倾斜平方的平均值为0.0025以下，倾斜方格为0.004以上的频率为15％以下以10nm的间隔获得表面。

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