公开(公告)号：US08697592B2

公开(公告)日：2014-04-15

申请号：US13490511

申请日：2012-06-07

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/085 ,  C03C3/091 ,  G11B7/241

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US20130040169A1

公开(公告)日：2013-02-14

申请号：US13490511

申请日：2012-06-07

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/00 ,  C03C3/083 ,  C03C3/085 ,  G11B5/73 ,  C03C3/091 ,  C03C3/062 ,  C03C3/064 ,  C03C3/089 ,  C03C3/087

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US07601446B2

公开(公告)日：2009-10-13

申请号：US10505282

申请日：2003-10-29

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： G11B5/65 ,  C03C3/17 ,  C03C3/21 ,  C03C19/00

CPC分类号： G11B5/7315 ,  C03C3/085 ,  C03C15/00 ,  C03C21/002 ,  G11B5/8404

摘要： A substrate for an information recording medium, which has high heat resistance and high acid resistance and is formed of a glass having a glass transition temperature (Tg) of 600° C. or higher and having an etching rate of 0.1 μm/minute or less with regard to a hydrosilicofluoric acid aqueous solution that is maintained at a temperature of 45° C. and has a hydrosilicofluoric acid concentration of 1.72% by weight, and an information recording medium having an information recording layer formed on the above substrate.

摘要翻译： 一种用于信息记录介质的基板，其具有高耐热性和高耐酸性，并且由玻璃化转变温度（Tg）为600℃以上并且蚀刻速率为0.1mum /分钟以下的玻璃形成 关于保持在45℃的温度，氢硅氟酸浓度为1.72重量％的氢硅氟酸水溶液，以及在上述基板上形成有信息记录层的信息记录介质。

公开(公告)号：US20060223689A1

公开(公告)日：2006-10-05

申请号：US11389532

申请日：2006-03-27

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： C03B11/00 ,  C03B23/00 ,  C03B17/00 ,  C03B21/00 ,  C03C3/16

CPC分类号： C03C3/17 ,  C03C3/247

摘要： A low-dispersion optical glass suitable for producing a quality preform from a molten glass and suitable for precision press-molding, which is a fluorophosphate glass containing, as essential cationic components, P5+, Al3+, at least two members selected from Mg2+, Ca2+, Sr2+ and Ba2+ as divalent cationic components (R2+) and Li+ and containing, by cationic %, 10 to 45% of P5+, 5 to 30% of Al3+, 0 to 20% of Mg2+, 0 to 25% of Ca2+, 0 to 30% of Sr2+, 0 to 33% of Ba2+, 1 to 30% of Li+, 0 to 10% of Na+, 0 to 10% of K+, 0 to 5% of Y3+, and 0 to 15% of B3+, the molar ratio of the content of F− to the total content of F− and O2−, F−/(F−+O2−) being 0.25 to 0.85, the optical glass having a refractive index (Nd) of 1.40 to 1.58 and an Abbe's number (νd) of 67 to 90.

摘要翻译： 一种低分散度光学玻璃，适用于从熔融玻璃制造优质预成型件，适用于作为必需阳离子成分的氟磷酸盐玻璃作为必需阳离子成分的精密加压成型， > 3 + ，选自Mg 2+，Ca 2+，Sr 2+和BaO 2的至少两个成员 > 2 + 为二价阳离子成分（R 2+ +）和Li + +，阳离子％含有10〜45％的P 5 5％〜30％的Al 3+，0〜20％的Mg 2+，0〜25％的Ca 2+， 0〜30％的Sr 2+，0〜33％的Ba 2+，1〜30％的Li 2+， ，0〜10％的Na +，0〜10％的K +，0〜5％的Y 3+，0〜 15％的B 3+ +，F 0的含量与F 0〜O 2的总含量的摩尔比 光学玻璃的折射率为0.25〜0.85，光学玻璃具有折射率（折射率） （N N d） 1.40至1.58，阿贝数（nu> d ）为67至90。

公开(公告)号：US08883330B2

公开(公告)日：2014-11-11

申请号：US13022363

申请日：2011-02-07

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： G11B5/735 ,  C03C21/00 ,  C03C3/00 ,  G11B5/73 ,  C03C3/087

CPC分类号： G11B5/7315 ,  C03C3/087 ,  C03C21/002 ,  Y10T428/21

摘要： A glass for use in chemical reinforcement for use in a substrate of an information recording medium, having a composition comprising, denoted as mol %: SiO247 to 70%  Al2O31 to 10% (where the total of SiO2 and Al2O3 is 57 to 80%) CaO2 to 25% BaO1 to 15% Na2O1 to 10% K2O0 to 15% (where the total of Na2O and K2O is 3 to 16%) ZrO21 to 12% MgO0 to 10% SrO0 to 15% (where the ratio of the content of CaO to the total of MgO, CaO, SrO, and BaO is greater than or equal to 0.5) ZnO0 to 10% (where the total of MgO, CaO, SrO, BaO, and ZnO is 3 to 30%) TiO20 to 10% and the total content of the above-stated components is greater than or equal to 95%. A glass for use in chemical reinforcement for use in the substrate of an information recording medium employed in a perpendicular magnetic recording system, in which the glass exhibits the glass transition temperature is greater than or equal to 600° C. A substrate for use in an information recording medium consisting of the above glass and being chemically reinforced. A substrate for an information recording medium consisting of a chemically reinforced glass having a glass transition temperature of greater than or equal to 600° C. and exhibiting a bending strength following heating for two hours at 570° C. of greater than or equal to 15 kgf/mm2. An information recording medium comprising an information recording layer on the above substrate for an information recording medium. The present invention provides glass having both high thermal resistance and high strength, a substrate for use in information recording media comprised of this glass, and an information recording medium employing such a substrate.

摘要翻译： 用于信息记录介质的基板中的化学增强用玻璃，其具有以摩尔％表示的组成：SiO 2 47〜70％Al 2 O 3 1〜10％（SiO 2和Al 2 O 3的总和为57〜80 ％）CaO 2〜25％BaO 1〜15％Na 2 O 1〜10％K2O 0〜15％（Na2O和K2O的总和为3〜16％）ZrO2 1〜12％MgO 0〜10％SrO 0〜15 ％（CaO的含量与MgO，CaO，SrO和BaO的总量的比例大于等于0.5）ZnO 0〜10％（MgO，CaO，SrO，BaO，ZnO的总量 为3〜30％）TiO 2为0〜10％，上述成分的总含量为95％以上。 用于在垂直磁记录系统中使用的信息记录介质的基板中的玻璃，其中所述玻璃呈玻璃化转变温度大于或等于600℃。 信息记录介质，由上述玻璃构成，并被化学强化。 一种用于信息记录介质的基板，由玻璃化转变温度大于或等于600℃的化学强化玻璃组成，并且在570℃下加热2小时后的弯曲强度大于或等于15 kgf / mm2。 一种信息记录介质，包括在上述信息记录介质用基板上的信息记录层。 本发明提供具有高热阻和高强度的玻璃，用于由该玻璃构成的信息记录介质的基板和使用这种基板的信息记录介质。

公开(公告)号：US20100160141A1

公开(公告)日：2010-06-24

申请号：US12656512

申请日：2010-02-01

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/093 ,  C03C3/083 ,  C03C3/085 ,  C03C3/091

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US07595272B2

公开(公告)日：2009-09-29

申请号：US11389532

申请日：2006-03-27

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： C03C3/17 ,  C03C3/19 ,  C03C3/16 ,  C03C3/12 ,  C03C3/247

CPC分类号： C03C3/17 ,  C03C3/247

摘要： A low-dispersion optical glass suitable for producing a quality preform from a molten glass and suitable for precision press-molding, which is a fluorophosphate glass containing, as essential cationic components, P5+, Al3+, at least two members selected from Mg2+, Ca2+, Sr2+ and Ba2+ as divalent cationic components (R2+) and Li+ and containing, by cationic %, 10 to 45% of P5+, 5 to 30% of Al3+, 0 to 20% of Mg2+, 0 to 25% of Ca2+, 0 to 30% of Sr2+, 0 to 33% of Ba2+, 1 to 30% of Li+, 0 to 10% of Na+, 0 to 10% of K+, 0 to 5% of Y3+, and 0 to 15% of B3+, the molar ratio of the content of F− to the total content of F− and O2−, F−/(F−+O2−), being 0.25 to 0.85, the optical glass having a refractive index (Nd) of 1.40 to 1.58 and an Abbe's number (νd) of 67 to 90.

摘要翻译： 一种低分散型光学玻璃，适用于从熔融玻璃制造优质预成型体，适用于精密加压成型，其为含有作为必需阳离子成分的P5 +，Al3 +，至少两种选自Mg2 ​​+，Ca2 +， Sr 2+和Ba 2+作为二价阳离子成分（R2 +）和Li +，阳离子％含有10〜45％的P5 +，5〜30％的Al3 +，0〜20％的Mg2 +，0〜25％的Ca2 +，0〜30 的Sr2 +，0〜33％的Ba2 +，1〜30％的Li +，0〜10％的Na +，0〜10％的K +，0〜5％的Y3 +，0〜15％的B3 + 的F-和O 2 - ，F - /（F- + O 2 - ）的总含量为0.25至0.85的光学玻璃的折射率（Nd）为1.40至1.58的光学玻璃和阿贝氏 number（nud）为67〜90。

公开(公告)号：US20050188724A1

公开(公告)日：2005-09-01

申请号：US11063753

申请日：2005-02-24

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： C03B7/10 ,  C03B7/12 ,  C03B11/08 ,  C03B15/00 ,  C03B40/04 ,  C03C15/00 ,  C03C15/02

CPC分类号： C03B11/08 ,  C03B7/10 ,  C03B7/12 ,  C03B40/04 ,  C03C15/00 ,  C03C15/02 ,  Y02P40/57

摘要： A process for producing a precision press-molding preform having a predetermined weight from a molten glass, wherein the molten glass is shaped into a glass gob and the above glass gob is etched to remove a surface layer of the glass gob to produce the precision press-molding preform formed of an optical glass having said weight, and further wherein said surface layer has a thickness of 0.5 μm or more.

摘要翻译： 一种用于从熔融玻璃制造具有预定重量的精密压制成型预成型件的方法，其中将熔融玻璃成形为玻璃料滴，并且蚀刻上述玻璃料滴以除去玻璃料滴的表面层以产生精密压机 所述预成型体由具有所述重量的光学玻璃形成，并且其中所述表面层的厚度为0.5μm以上。

公开(公告)号：US08357459B2

公开(公告)日：2013-01-22

申请号：US13244399

申请日：2011-09-24

申请人： Kazuo Tachiwana ,  Yoichi Hachitani ,  Xuelu Zou ,  Mikio Ikenishi ,  Kinobu Osakabe

发明人： Kazuo Tachiwana ,  Yoichi Hachitani ,  Xuelu Zou ,  Mikio Ikenishi ,  Kinobu Osakabe

IPC分类号： C03C3/097 ,  C03C3/04

CPC分类号： G11B5/735 ,  C03C3/083 ,  C03C3/087 ,  C03C3/095 ,  C03C3/097 ,  C03C15/00 ,  C03C19/00 ,  C03C21/002 ,  C03C23/0075 ,  G11B5/7315 ,  G11B5/82 ,  G11B5/8404 ,  Y10T428/24273 ,  Y10T428/315

摘要： According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28. Further provided are the substrate for information recording medium, information recording medium and their manufacturing methods according to the present invention.

摘要翻译： 根据本发明的一个方面，提供了一种用于信息记录介质的基板的玻璃，其包括以摩尔百分数表示的总和为70〜85％的SiO 2和Al 2 O 3，其中SiO 2含量等于或大于 50％，Al2O3含量等于或大于3％; 总计等于或大于10％的Li2O，Na2O和K2O; CaO和MgO的总量为1〜6％，其中CaO含量大于MgO含量; 总共大于0％但等于或低于ZrO2，HfO2，Nb2O5，Ta2O5，La2O3Y2O3和TiO2的4％; 其中Li2O，Na2O和K2O的总含量与SiO2，Al2O3，ZrO2，HfO2，Nb2O5，Ta2O5，La2O3，Y2O3和TiO2（（Li2O + Na2O + K2O）/（SiO2 + Al2O3 + ZrO 2 + HfO 2 + Nb 2 O 5 + Ta 2 O 5 + La 2 O 3 + Y 2 O 3 + TiO 2））等于或小于0.28。 还提供了根据本发明的用于信息记录介质的基板，信息记录介质及其制造方法。

公开(公告)号：US08261579B2

公开(公告)日：2012-09-11

申请号：US13351298

申请日：2012-01-17

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： C03C19/00 ,  C03C3/23 ,  C03C3/247 ,  C03C3/17 ,  C03B23/00

CPC分类号： C03B11/122 ,  C03B7/12 ,  C03B17/06 ,  C03B19/02 ,  C03B2215/66 ,  C03C3/247 ,  Y02P40/57

摘要： Provided is an optically uniform and high-quality optical glass that is free from the occurrence of striae when a precision press-molding preform is produced therefrom, and that is a fluorine-containing glass having a refractive index nd(1) wherein the refractive index nd(1) and a refractive index nd(2) are substantially equivalent to each other, said refractive index nd(2) being a refractive index of the fluorine-containing glass after the fluorine-containing glass is re-melted in a nitrogen atmosphere at 900° C. for 1 hour, cooled to its glass transition temperature and then cooled to 25° C. at a temperature decrease rate of 30° C./hour.